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c6243b4c 1/* Xstormy16 cpu description.
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2 Copyright (C) 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Contributed by Red Hat, Inc.
5
6This file is part of GNU CC.
7
8GNU CC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GNU CC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GNU CC; see the file COPYING. If not, write to
20the Free Software Foundation, 59 Temple Place - Suite 330,
21Boston, MA 02111-1307, USA. */
22
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23\f
24/* Driver configuration */
25
26/* A C expression which determines whether the option `-CHAR' takes arguments.
27 The value should be the number of arguments that option takes-zero, for many
28 options.
29
30 By default, this macro is defined to handle the standard options properly.
31 You need not define it unless you wish to add additional options which take
32 arguments.
33
34 Defined in svr4.h. */
35/* #define SWITCH_TAKES_ARG(CHAR) */
36
37/* A C expression which determines whether the option `-NAME' takes arguments.
38 The value should be the number of arguments that option takes-zero, for many
39 options. This macro rather than `SWITCH_TAKES_ARG' is used for
40 multi-character option names.
41
42 By default, this macro is defined as `DEFAULT_WORD_SWITCH_TAKES_ARG', which
43 handles the standard options properly. You need not define
44 `WORD_SWITCH_TAKES_ARG' unless you wish to add additional options which take
45 arguments. Any redefinition should call `DEFAULT_WORD_SWITCH_TAKES_ARG' and
46 then check for additional options.
47
48 Defined in svr4.h. */
49/* #define WORD_SWITCH_TAKES_ARG(NAME) */
50
51/* A string-valued C expression which is nonempty if the linker needs a space
52 between the `-L' or `-o' option and its argument.
53
54 If this macro is not defined, the default value is 0. */
55/* #define SWITCHES_NEED_SPACES "" */
56
57/* A C string constant that tells the GNU CC driver program options to pass to
58 CPP. It can also specify how to translate options you give to GNU CC into
59 options for GNU CC to pass to the CPP.
60
61 Do not define this macro if it does not need to do anything. */
62/* #define CPP_SPEC "" */
63
64/* If this macro is defined, the preprocessor will not define the builtin macro
65 `__SIZE_TYPE__'. The macro `__SIZE_TYPE__' must then be defined by
66 `CPP_SPEC' instead.
67
68 This should be defined if `SIZE_TYPE' depends on target dependent flags
69 which are not accessible to the preprocessor. Otherwise, it should not be
70 defined. */
71/* #define NO_BUILTIN_SIZE_TYPE */
72
73/* If this macro is defined, the preprocessor will not define the builtin macro
74 `__PTRDIFF_TYPE__'. The macro `__PTRDIFF_TYPE__' must then be defined by
75 `CPP_SPEC' instead.
76
77 This should be defined if `PTRDIFF_TYPE' depends on target dependent flags
78 which are not accessible to the preprocessor. Otherwise, it should not be
79 defined. */
80/* #define NO_BUILTIN_PTRDIFF_TYPE */
81
82/* A C string constant that tells the GNU CC driver program options to pass to
83 CPP. By default, this macro is defined to pass the option
84 `-D__CHAR_UNSIGNED__' to CPP if `char' will be treated as `unsigned char' by
85 `cc1'.
86
87 Do not define this macro unless you need to override the default definition. */
88/* #if DEFAULT_SIGNED_CHAR
89 #define SIGNED_CHAR_SPEC "%{funsigned-char:-D__CHAR_UNSIGNED__}"
90 #else
91 #define SIGNED_CHAR_SPEC "%{!fsigned-char:-D__CHAR_UNSIGNED__}"
92 #endif */
93
94/* A C string constant that tells the GNU CC driver program options to pass to
95 `cc1'. It can also specify how to translate options you give to GNU CC into
96 options for GNU CC to pass to the `cc1'.
97
98 Do not define this macro if it does not need to do anything. */
99/* #define CC1_SPEC "" */
100
101/* A C string constant that tells the GNU CC driver program options to pass to
102 `cc1plus'. It can also specify how to translate options you give to GNU CC
103 into options for GNU CC to pass to the `cc1plus'.
104
105 Do not define this macro if it does not need to do anything. */
106/* #define CC1PLUS_SPEC "" */
107
108/* A C string constant that tells the GNU CC driver program options to pass to
109 the assembler. It can also specify how to translate options you give to GNU
110 CC into options for GNU CC to pass to the assembler. See the file `sun3.h'
111 for an example of this.
112
113 Do not define this macro if it does not need to do anything.
114
115 Defined in svr4.h. */
116#undef ASM_SPEC
322fe6e1 117#define ASM_SPEC ""
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118
119/* A C string constant that tells the GNU CC driver program how to run any
120 programs which cleanup after the normal assembler. Normally, this is not
121 needed. See the file `mips.h' for an example of this.
122
123 Do not define this macro if it does not need to do anything.
124
125 Defined in svr4.h. */
126/* #define ASM_FINAL_SPEC "" */
127
128/* A C string constant that tells the GNU CC driver program options to pass to
129 the linker. It can also specify how to translate options you give to GNU CC
130 into options for GNU CC to pass to the linker.
131
132 Do not define this macro if it does not need to do anything.
133
134 Defined in svr4.h. */
135/* #define LINK_SPEC "" */
136
137/* Another C string constant used much like `LINK_SPEC'. The difference
138 between the two is that `LIB_SPEC' is used at the end of the command given
139 to the linker.
140
c6243b4c 141 For xstormy16:
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142 - If -msim is specified, everything is built and linked as for the sim.
143 - If -T is specified, that linker script is used, and it should provide
144 appropriate libraries.
145 - If neither is specified, everything is built as for the sim, but no
146 I/O support is assumed.
147
148*/
4b58290f 149#undef LIB_SPEC
3eaaf577 150#define LIB_SPEC "-( -lc %{msim:-lsim}%{!msim:%{!T*:-lnosys}} -)"
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151
152/* Another C string constant that tells the GNU CC driver program how and when
153 to place a reference to `libgcc.a' into the linker command line. This
154 constant is placed both before and after the value of `LIB_SPEC'.
155
156 If this macro is not defined, the GNU CC driver provides a default that
157 passes the string `-lgcc' to the linker unless the `-shared' option is
158 specified. */
159/* #define LIBGCC_SPEC "" */
160
161/* Another C string constant used much like `LINK_SPEC'. The difference
162 between the two is that `STARTFILE_SPEC' is used at the very beginning of
163 the command given to the linker.
164
165 If this macro is not defined, a default is provided that loads the standard
166 C startup file from the usual place. See `gcc.c'.
167
168 Defined in svr4.h. */
169#undef STARTFILE_SPEC
170#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
171
172/* Another C string constant used much like `LINK_SPEC'. The difference
173 between the two is that `ENDFILE_SPEC' is used at the very end of the
174 command given to the linker.
175
176 Do not define this macro if it does not need to do anything.
177
178 Defined in svr4.h. */
179#undef ENDFILE_SPEC
180#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
181
182/* Define this macro if the driver program should find the library `libgcc.a'
183 itself and should not pass `-L' options to the linker. If you do not define
184 this macro, the driver program will pass the argument `-lgcc' to tell the
185 linker to do the search and will pass `-L' options to it. */
186/* #define LINK_LIBGCC_SPECIAL */
187
188/* Define this macro if the driver program should find the library `libgcc.a'.
189 If you do not define this macro, the driver program will pass the argument
190 `-lgcc' to tell the linker to do the search. This macro is similar to
191 `LINK_LIBGCC_SPECIAL', except that it does not affect `-L' options. */
192/* #define LINK_LIBGCC_SPECIAL_1 */
193
194/* Define this macro to provide additional specifications to put in the `specs'
195 file that can be used in various specifications like `CC1_SPEC'.
196
197 The definition should be an initializer for an array of structures,
198 containing a string constant, that defines the specification name, and a
199 string constant that provides the specification.
200
201 Do not define this macro if it does not need to do anything. */
202/* #define EXTRA_SPECS {{}} */
203
204/* Define this macro as a C expression for the initializer of an array of
205 string to tell the driver program which options are defaults for this target
206 and thus do not need to be handled specially when using `MULTILIB_OPTIONS'.
207
208 Do not define this macro if `MULTILIB_OPTIONS' is not defined in the target
209 makefile fragment or if none of the options listed in `MULTILIB_OPTIONS' are
210 set by default. */
211/* #define MULTILIB_DEFAULTS {} */
212
213/* Define this macro to tell `gcc' that it should only translate a `-B' prefix
214 into a `-L' linker option if the prefix indicates an absolute file name. */
215/* #define RELATIVE_PREFIX_NOT_LINKDIR */
216
217/* Define this macro as a C string constant if you wish to override the
218 standard choice of `/usr/local/lib/gcc-lib/' as the default prefix to try
219 when searching for the executable files of the compiler. */
220/* #define STANDARD_EXEC_PREFIX "" */
221
222/* If defined, this macro is an additional prefix to try after
223 `STANDARD_EXEC_PREFIX'. `MD_EXEC_PREFIX' is not searched when the `-b'
224 option is used, or the compiler is built as a cross compiler.
225
226 Defined in svr4.h for host compilers. */
227/* #define MD_EXEC_PREFIX "" */
228
229/* Define this macro as a C string constant if you wish to override the
230 standard choice of `/usr/local/lib/' as the default prefix to try when
231 searching for startup files such as `crt0.o'. */
232/* #define STANDARD_STARTFILE_PREFIX "" */
233
234/* If defined, this macro supplies an additional prefix to try after the
235 standard prefixes. `MD_EXEC_PREFIX' is not searched when the `-b' option is
236 used, or when the compiler is built as a cross compiler.
237
238 Defined in svr4.h for host compilers. */
239/* #define MD_STARTFILE_PREFIX "" */
240
241/* If defined, this macro supplies yet another prefix to try after the standard
242 prefixes. It is not searched when the `-b' option is used, or when the
243 compiler is built as a cross compiler. */
244/* #define MD_STARTFILE_PREFIX_1 "" */
245
246/* Define this macro as a C string constant if you with to set environment
247 variables for programs called by the driver, such as the assembler and
248 loader. The driver passes the value of this macro to `putenv' to initialize
249 the necessary environment variables. */
250/* #define INIT_ENVIRONMENT "" */
251
252/* Define this macro as a C string constant if you wish to override the
253 standard choice of `/usr/local/include' as the default prefix to try when
254 searching for local header files. `LOCAL_INCLUDE_DIR' comes before
255 `SYSTEM_INCLUDE_DIR' in the search order.
256
257 Cross compilers do not use this macro and do not search either
258 `/usr/local/include' or its replacement. */
259/* #define LOCAL_INCLUDE_DIR "" */
260
261/* Define this macro as a C string constant if you wish to specify a
262 system-specific directory to search for header files before the standard
263 directory. `SYSTEM_INCLUDE_DIR' comes before `STANDARD_INCLUDE_DIR' in the
264 search order.
265
266 Cross compilers do not use this macro and do not search the directory
267 specified. */
268/* #define SYSTEM_INCLUDE_DIR "" */
269
270/* Define this macro as a C string constant if you wish to override the
271 standard choice of `/usr/include' as the default prefix to try when
272 searching for header files.
273
274 Cross compilers do not use this macro and do not search either
275 `/usr/include' or its replacement. */
276/* #define STANDARD_INCLUDE_DIR "" */
277
278/* Define this macro if you wish to override the entire default search path for
279 include files. The default search path includes `GCC_INCLUDE_DIR',
280 `LOCAL_INCLUDE_DIR', `SYSTEM_INCLUDE_DIR', `GPLUSPLUS_INCLUDE_DIR', and
281 `STANDARD_INCLUDE_DIR'. In addition, `GPLUSPLUS_INCLUDE_DIR' and
282 `GCC_INCLUDE_DIR' are defined automatically by `Makefile', and specify
283 private search areas for GCC. The directory `GPLUSPLUS_INCLUDE_DIR' is used
284 only for C++ programs.
285
286 The definition should be an initializer for an array of structures. Each
287 array element should have two elements: the directory name (a string
288 constant) and a flag for C++-only directories. Mark the end of the array
289 with a null element. For example, here is the definition used for VMS:
290
291 #define INCLUDE_DEFAULTS \
292 { \
293 { "GNU_GXX_INCLUDE:", 1}, \
294 { "GNU_CC_INCLUDE:", 0}, \
295 { "SYS$SYSROOT:[SYSLIB.]", 0}, \
296 { ".", 0}, \
297 { 0, 0} \
298 }
299
300 Here is the order of prefixes tried for exec files:
301
302 1. Any prefixes specified by the user with `-B'.
303
304 2. The environment variable `GCC_EXEC_PREFIX', if any.
305
306 3. The directories specified by the environment variable
307 `COMPILER_PATH'.
308
309 4. The macro `STANDARD_EXEC_PREFIX'.
310
311 5. `/usr/lib/gcc/'.
312
313 6. The macro `MD_EXEC_PREFIX', if any.
314
315 Here is the order of prefixes tried for startfiles:
316
317 1. Any prefixes specified by the user with `-B'.
318
319 2. The environment variable `GCC_EXEC_PREFIX', if any.
320
321 3. The directories specified by the environment variable
322 `LIBRARY_PATH' (native only, cross compilers do not use this).
323
324 4. The macro `STANDARD_EXEC_PREFIX'.
325
326 5. `/usr/lib/gcc/'.
327
328 6. The macro `MD_EXEC_PREFIX', if any.
329
330 7. The macro `MD_STARTFILE_PREFIX', if any.
331
332 8. The macro `STANDARD_STARTFILE_PREFIX'.
333
334 9. `/lib/'.
335
336 10. `/usr/lib/'. */
337/* #define INCLUDE_DEFAULTS {{ }} */
338
339\f
340/* Run-time target specifications */
341
342/* Define this to be a string constant containing `-D' options to define the
343 predefined macros that identify this machine and system. These macros will
344 be predefined unless the `-ansi' option is specified.
345
346 In addition, a parallel set of macros are predefined, whose names are made
347 by appending `__' at the beginning and at the end. These `__' macros are
348 permitted by the ANSI standard, so they are predefined regardless of whether
349 `-ansi' is specified.
350
351 For example, on the Sun, one can use the following value:
352
353 "-Dmc68000 -Dsun -Dunix"
354
355 The result is to define the macros `__mc68000__', `__sun__' and `__unix__'
356 unconditionally, and the macros `mc68000', `sun' and `unix' provided `-ansi'
357 is not specified. */
c6243b4c 358#define CPP_PREDEFINES "-Dxstormy16 -Amachine=xstormy16 -D__INT_MAX__=32767"
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359
360/* This declaration should be present. */
361extern int target_flags;
362
363/* This series of macros is to allow compiler command arguments to enable or
364 disable the use of optional features of the target machine. For example,
365 one machine description serves both the 68000 and the 68020; a command
366 argument tells the compiler whether it should use 68020-only instructions or
367 not. This command argument works by means of a macro `TARGET_68020' that
368 tests a bit in `target_flags'.
369
370 Define a macro `TARGET_FEATURENAME' for each such option. Its definition
371 should test a bit in `target_flags'; for example:
372
373 #define TARGET_68020 (target_flags & 1)
374
375 One place where these macros are used is in the condition-expressions of
376 instruction patterns. Note how `TARGET_68020' appears frequently in the
377 68000 machine description file, `m68k.md'. Another place they are used is
378 in the definitions of the other macros in the `MACHINE.h' file. */
379/* #define TARGET_... */
380
381/* This macro defines names of command options to set and clear bits in
382 `target_flags'. Its definition is an initializer with a subgrouping for
383 each command option.
384
385 Each subgrouping contains a string constant, that defines the
386 option name, a number, which contains the bits to set in
387 `target_flags', and an optional second string which is the textual
388 description that will be displayed when the user passes --help on
389 the command line. If the number entry is negative then the
390 specified bits will be cleared instead of being set. If the second
391 string entry is present but empty, then no help information will be
392 displayed for that option, but it will not count as an undocumented
393 option. The actual option name, as seen on the command line is
394 made by appending `-m' to the specified name.
395
396 One of the subgroupings should have a null string. The number in this
397 grouping is the default value for `target_flags'. Any target options act
398 starting with that value.
399
400 Here is an example which defines `-m68000' and `-m68020' with opposite
401 meanings, and picks the latter as the default:
402
403 #define TARGET_SWITCHES \
404 { { "68020", 1, ""}, \
405 { "68000", -1, "Compile for the m68000"}, \
406 { "", 1, }}
407
408 This declaration must be present. */
409
410#define TARGET_SWITCHES \
411 {{ "sim", 0, "Provide libraries for the simulator" }, \
412 { "", 0, "" }}
413
414/* This macro is similar to `TARGET_SWITCHES' but defines names of command
415 options that have values. Its definition is an initializer with a
416 subgrouping for each command option.
417
418 Each subgrouping contains a string constant, that defines the fixed part of
419 the option name, the address of a variable, and an optional description string.
420 The variable, of type `char *', is set to the text following the fixed part of
421 the option as it is specified on the command line. The actual option name is
422 made by appending `-m' to the specified name.
423
424 Here is an example which defines `-mshort-data-NUMBER'. If the given option
425 is `-mshort-data-512', the variable `m88k_short_data' will be set to the
426 string `"512"'.
427
428 extern char *m88k_short_data;
429 #define TARGET_OPTIONS \
430 { { "short-data-", & m88k_short_data, \
431 "Specify the size of the short data section" } }
432
433 This declaration is optional. */
434/* #define TARGET_OPTIONS */
435
436/* This macro is a C statement to print on `stderr' a string describing the
437 particular machine description choice. Every machine description should
438 define `TARGET_VERSION'. For example:
439
440 #ifdef MOTOROLA
441 #define TARGET_VERSION \
442 fprintf (stderr, " (68k, Motorola syntax)");
443 #else
444 #define TARGET_VERSION \
445 fprintf (stderr, " (68k, MIT syntax)");
446 #endif */
c6243b4c 447#define TARGET_VERSION fprintf (stderr, " (xstormy16 cpu core)");
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448
449/* Sometimes certain combinations of command options do not make sense on a
450 particular target machine. You can define a macro `OVERRIDE_OPTIONS' to
451 take account of this. This macro, if defined, is executed once just after
452 all the command options have been parsed.
453
454 Don't use this macro to turn on various extra optimizations for `-O'. That
455 is what `OPTIMIZATION_OPTIONS' is for. */
456/* #define OVERRIDE_OPTIONS */
457
458/* Some machines may desire to change what optimizations are performed for
459 various optimization levels. This macro, if defined, is executed once just
460 after the optimization level is determined and before the remainder of the
461 command options have been parsed. Values set in this macro are used as the
462 default values for the other command line options.
463
464 LEVEL is the optimization level specified; 2 if `-O2' is specified, 1 if
465 `-O' is specified, and 0 if neither is specified.
466
467 SIZE is non-zero if `-Os' is specified, 0 otherwise.
468
469 You should not use this macro to change options that are not
470 machine-specific. These should uniformly selected by the same optimization
471 level on all supported machines. Use this macro to enable machbine-specific
472 optimizations.
473
474 *Do not examine `write_symbols' in this macro!* The debugging options are
475 *not supposed to alter the generated code. */
476/* #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) */
477
478/* Define this macro if debugging can be performed even without a frame
479 pointer. If this macro is defined, GNU CC will turn on the
480 `-fomit-frame-pointer' option whenever `-O' is specified. */
481#define CAN_DEBUG_WITHOUT_FP
482
483\f
484/* Storage Layout */
485
486/* Define this macro to have the value 1 if the most significant bit in a byte
487 has the lowest number; otherwise define it to have the value zero. This
488 means that bit-field instructions count from the most significant bit. If
489 the machine has no bit-field instructions, then this must still be defined,
490 but it doesn't matter which value it is defined to. This macro need not be
491 a constant.
492
493 This macro does not affect the way structure fields are packed into bytes or
494 words; that is controlled by `BYTES_BIG_ENDIAN'. */
495#define BITS_BIG_ENDIAN 1
496
497/* Define this macro to have the value 1 if the most significant byte in a word
498 has the lowest number. This macro need not be a constant. */
499#define BYTES_BIG_ENDIAN 0
500
501/* Define this macro to have the value 1 if, in a multiword object, the most
502 significant word has the lowest number. This applies to both memory
503 locations and registers; GNU CC fundamentally assumes that the order of
504 words in memory is the same as the order in registers. This macro need not
505 be a constant. */
506#define WORDS_BIG_ENDIAN 0
507
508/* Define this macro if WORDS_BIG_ENDIAN is not constant. This must be a
509 constant value with the same meaning as WORDS_BIG_ENDIAN, which will be used
510 only when compiling libgcc2.c. Typically the value will be set based on
511 preprocessor defines. */
512/* #define LIBGCC2_WORDS_BIG_ENDIAN */
513
514/* Define this macro to have the value 1 if `DFmode', `XFmode' or `TFmode'
515 floating point numbers are stored in memory with the word containing the
516 sign bit at the lowest address; otherwise define it to have the value 0.
517 This macro need not be a constant.
518
519 You need not define this macro if the ordering is the same as for multi-word
520 integers. */
521/* #define FLOAT_WORDS_BIG_ENDIAN */
522
523/* Define this macro to be the number of bits in an addressable storage unit
524 (byte); normally 8. */
525#define BITS_PER_UNIT 8
526
527/* Number of bits in a word; normally 32. */
528#define BITS_PER_WORD 16
529
530/* Maximum number of bits in a word. If this is undefined, the default is
531 `BITS_PER_WORD'. Otherwise, it is the constant value that is the largest
532 value that `BITS_PER_WORD' can have at run-time. */
533/* #define MAX_BITS_PER_WORD */
534
535/* Number of storage units in a word; normally 4. */
536#define UNITS_PER_WORD 2
537
538/* Minimum number of units in a word. If this is undefined, the default is
539 `UNITS_PER_WORD'. Otherwise, it is the constant value that is the smallest
540 value that `UNITS_PER_WORD' can have at run-time. */
541/* #define MIN_UNITS_PER_WORD */
542
543/* Width of a pointer, in bits. You must specify a value no wider than the
544 width of `Pmode'. If it is not equal to the width of `Pmode', you must
545 define `POINTERS_EXTEND_UNSIGNED'. */
546#define POINTER_SIZE 16
547
548/* A C expression whose value is nonzero if pointers that need to be extended
549 from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and zero if
550 they are zero-extended.
551
552 You need not define this macro if the `POINTER_SIZE' is equal to the width
553 of `Pmode'. */
554/* #define POINTERS_EXTEND_UNSIGNED */
555
556/* A macro to update MODE and UNSIGNEDP when an object whose type is TYPE and
557 which has the specified mode and signedness is to be stored in a register.
558 This macro is only called when TYPE is a scalar type.
559
560 On most RISC machines, which only have operations that operate on a full
561 register, define this macro to set M to `word_mode' if M is an integer mode
562 narrower than `BITS_PER_WORD'. In most cases, only integer modes should be
563 widened because wider-precision floating-point operations are usually more
564 expensive than their narrower counterparts.
565
566 For most machines, the macro definition does not change UNSIGNEDP. However,
567 some machines, have instructions that preferentially handle either signed or
568 unsigned quantities of certain modes. For example, on the DEC Alpha, 32-bit
569 loads from memory and 32-bit add instructions sign-extend the result to 64
570 bits. On such machines, set UNSIGNEDP according to which kind of extension
571 is more efficient.
572
573 Do not define this macro if it would never modify MODE. */
574#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
575do { \
576 if (GET_MODE_CLASS (MODE) == MODE_INT \
577 && GET_MODE_SIZE (MODE) < 2) \
578 (MODE) = HImode; \
579} while (0)
580
581/* Define this macro if the promotion described by `PROMOTE_MODE' should also
582 be done for outgoing function arguments. */
583#define PROMOTE_FUNCTION_ARGS 1
584
585/* Define this macro if the promotion described by `PROMOTE_MODE' should also
586 be done for the return value of functions.
587
588 If this macro is defined, `FUNCTION_VALUE' must perform the same promotions
589 done by `PROMOTE_MODE'. */
590#define PROMOTE_FUNCTION_RETURN 1
591
592/* Define this macro if the promotion described by `PROMOTE_MODE' should *only*
593 be performed for outgoing function arguments or function return values, as
594 specified by `PROMOTE_FUNCTION_ARGS' and `PROMOTE_FUNCTION_RETURN',
595 respectively. */
596/* #define PROMOTE_FOR_CALL_ONLY */
597
598/* Normal alignment required for function parameters on the stack, in bits.
599 All stack parameters receive at least this much alignment regardless of data
600 type. On most machines, this is the same as the size of an integer. */
601#define PARM_BOUNDARY 16
602
603/* Define this macro if you wish to preserve a certain alignment for the stack
604 pointer. The definition is a C expression for the desired alignment
605 (measured in bits).
606
607 If `PUSH_ROUNDING' is not defined, the stack will always be aligned to the
608 specified boundary. If `PUSH_ROUNDING' is defined and specifies a less
609 strict alignment than `STACK_BOUNDARY', the stack may be momentarily
610 unaligned while pushing arguments. */
611#define STACK_BOUNDARY 16
612
613/* Alignment required for a function entry point, in bits. */
614#define FUNCTION_BOUNDARY 16
615
616/* Biggest alignment that any data type can require on this machine,
617 in bits. */
618#define BIGGEST_ALIGNMENT 16
619
620/* Biggest alignment that any structure field can require on this machine, in
621 bits. If defined, this overrides `BIGGEST_ALIGNMENT' for structure fields
622 only. */
623/* #define BIGGEST_FIELD_ALIGNMENT */
624
625/* An expression for the alignment of a structure field FIELD if the
626 alignment computed in the usual way is COMPUTED. GNU CC uses this
627 value instead of the value in `BIGGEST_ALIGNMENT' or
628 `BIGGEST_FIELD_ALIGNMENT', if defined, for structure fields only. */
629/* #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) */
630
631/* Biggest alignment supported by the object file format of this machine. Use
632 this macro to limit the alignment which can be specified using the
633 `__attribute__ ((aligned (N)))' construct. If not defined, the default
634 value is `BIGGEST_ALIGNMENT'.
635
636 Defined in svr4.h. */
637/* #define MAX_OFILE_ALIGNMENT */
638
639/* If defined, a C expression to compute the alignment for a static variable.
640 TYPE is the data type, and ALIGN is the alignment that the object
641 would ordinarily have. The value of this macro is used instead of that
642 alignment to align the object.
643
644 If this macro is not defined, then ALIGN is used.
645
646 One use of this macro is to increase alignment of medium-size data to make
647 it all fit in fewer cache lines. Another is to cause character arrays to be
648 word-aligned so that `strcpy' calls that copy constants to character arrays
649 can be done inline. */
650#define DATA_ALIGNMENT(TYPE, ALIGN) \
651 (TREE_CODE (TYPE) == ARRAY_TYPE \
652 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
653 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
654
655/* If defined, a C expression to compute the alignment given to a constant that
656 is being placed in memory. CONSTANT is the constant and ALIGN is the
657 alignment that the object would ordinarily have. The value of this macro is
658 used instead of that alignment to align the object.
659
660 If this macro is not defined, then ALIGN is used.
661
662 The typical use of this macro is to increase alignment for string constants
663 to be word aligned so that `strcpy' calls that copy constants can be done
664 inline. */
665#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
666 (TREE_CODE (EXP) == STRING_CST \
667 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
668
669/* Alignment in bits to be given to a structure bit field that follows an empty
670 field such as `int : 0;'.
671
672 Note that `PCC_BITFIELD_TYPE_MATTERS' also affects the alignment that
673 results from an empty field. */
674/* #define EMPTY_FIELD_BOUNDARY */
675
676/* Number of bits which any structure or union's size must be a multiple of.
677 Each structure or union's size is rounded up to a multiple of this.
678
679 If you do not define this macro, the default is the same as `BITS_PER_UNIT'. */
680/* #define STRUCTURE_SIZE_BOUNDARY */
681
682/* Define this macro to be the value 1 if instructions will fail to work if
683 given data not on the nominal alignment. If instructions will merely go
684 slower in that case, define this macro as 0. */
685#define STRICT_ALIGNMENT 1
686
687/* Define this if you wish to imitate the way many other C compilers handle
688 alignment of bitfields and the structures that contain them.
689
690 The behavior is that the type written for a bitfield (`int', `short', or
691 other integer type) imposes an alignment for the entire structure, as if the
692 structure really did contain an ordinary field of that type. In addition,
693 the bitfield is placed within the structure so that it would fit within such
694 a field, not crossing a boundary for it.
695
696 Thus, on most machines, a bitfield whose type is written as `int' would not
697 cross a four-byte boundary, and would force four-byte alignment for the
698 whole structure. (The alignment used may not be four bytes; it is
699 controlled by the other alignment parameters.)
700
701 If the macro is defined, its definition should be a C expression; a nonzero
702 value for the expression enables this behavior.
703
704 Note that if this macro is not defined, or its value is zero, some bitfields
705 may cross more than one alignment boundary. The compiler can support such
706 references if there are `insv', `extv', and `extzv' insns that can directly
707 reference memory.
708
709 The other known way of making bitfields work is to define
710 `STRUCTURE_SIZE_BOUNDARY' as large as `BIGGEST_ALIGNMENT'. Then every
711 structure can be accessed with fullwords.
712
713 Unless the machine has bitfield instructions or you define
714 `STRUCTURE_SIZE_BOUNDARY' that way, you must define
715 `PCC_BITFIELD_TYPE_MATTERS' to have a nonzero value.
716
717 If your aim is to make GNU CC use the same conventions for laying out
718 bitfields as are used by another compiler, here is how to investigate what
719 the other compiler does. Compile and run this program:
720
721 struct foo1
722 {
723 char x;
724 char :0;
725 char y;
726 };
727
728 struct foo2
729 {
730 char x;
731 int :0;
732 char y;
733 };
734
735 main ()
736 {
737 printf ("Size of foo1 is %d\n",
738 sizeof (struct foo1));
739 printf ("Size of foo2 is %d\n",
740 sizeof (struct foo2));
741 exit (0);
742 }
743
744 If this prints 2 and 5, then the compiler's behavior is what you would get
745 from `PCC_BITFIELD_TYPE_MATTERS'.
746
747 Defined in svr4.h. */
748#define PCC_BITFIELD_TYPE_MATTERS 1
749
750/* Like PCC_BITFIELD_TYPE_MATTERS except that its effect is limited to aligning
751 a bitfield within the structure. */
752/* #define BITFIELD_NBYTES_LIMITED */
753
754/* Define this macro as an expression for the overall size of a structure
755 (given by STRUCT as a tree node) when the size computed from the fields is
756 SIZE and the alignment is ALIGN.
757
758 The default is to round SIZE up to a multiple of ALIGN. */
759/* #define ROUND_TYPE_SIZE(STRUCT, SIZE, ALIGN) */
760
761/* Define this macro as an expression for the alignment of a structure (given
762 by STRUCT as a tree node) if the alignment computed in the usual way is
763 COMPUTED and the alignment explicitly specified was SPECIFIED.
764
765 The default is to use SPECIFIED if it is larger; otherwise, use the smaller
766 of COMPUTED and `BIGGEST_ALIGNMENT' */
767/* #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) */
768
769/* An integer expression for the size in bits of the largest integer machine
770 mode that should actually be used. All integer machine modes of this size
771 or smaller can be used for structures and unions with the appropriate sizes.
772 If this macro is undefined, `GET_MODE_BITSIZE (DImode)' is assumed. */
773/* #define MAX_FIXED_MODE_SIZE */
774
775/* A C statement to validate the value VALUE (of type `double') for mode MODE.
776 This means that you check whether VALUE fits within the possible range of
777 values for mode MODE on this target machine. The mode MODE is always a mode
778 of class `MODE_FLOAT'. OVERFLOW is nonzero if the value is already known to
779 be out of range.
780
781 If VALUE is not valid or if OVERFLOW is nonzero, you should set OVERFLOW to
782 1 and then assign some valid value to VALUE. Allowing an invalid value to
783 go through the compiler can produce incorrect assembler code which may even
784 cause Unix assemblers to crash.
785
786 This macro need not be defined if there is no work for it to do. */
787/* #define CHECK_FLOAT_VALUE(MODE, VALUE, OVERFLOW) */
788
789/* A code distinguishing the floating point format of the target machine.
790 There are three defined values:
791
792 IEEE_FLOAT_FORMAT'
793 This code indicates IEEE floating point. It is the default;
794 there is no need to define this macro when the format is IEEE.
795
796 VAX_FLOAT_FORMAT'
797 This code indicates the peculiar format used on the Vax.
798
799 UNKNOWN_FLOAT_FORMAT'
800 This code indicates any other format.
801
802 The value of this macro is compared with `HOST_FLOAT_FORMAT'
803 to determine whether the target machine has the same format as
804 the host machine. If any other formats are actually in use on supported
805 machines, new codes should be defined for them.
806
807 The ordering of the component words of floating point values stored in
808 memory is controlled by `FLOAT_WORDS_BIG_ENDIAN' for the target machine and
809 `HOST_FLOAT_WORDS_BIG_ENDIAN' for the host. */
810#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
811
4b58290f
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812\f
813/* Layout of Source Language Data Types */
814
815/* A C expression for the size in bits of the type `int' on the target machine.
816 If you don't define this, the default is one word. */
817#define INT_TYPE_SIZE 16
818
819/* Maximum number for the size in bits of the type `int' on the target machine.
820 If this is undefined, the default is `INT_TYPE_SIZE'. Otherwise, it is the
821 constant value that is the largest value that `INT_TYPE_SIZE' can have at
822 run-time. This is used in `cpp'. */
823/* #define MAX_INT_TYPE_SIZE */
824
825/* A C expression for the size in bits of the type `short' on the target
826 machine. If you don't define this, the default is half a word. (If this
827 would be less than one storage unit, it is rounded up to one unit.) */
828#define SHORT_TYPE_SIZE 16
829
830/* A C expression for the size in bits of the type `long' on the target
831 machine. If you don't define this, the default is one word. */
832#define LONG_TYPE_SIZE 32
833
834/* Maximum number for the size in bits of the type `long' on the target
835 machine. If this is undefined, the default is `LONG_TYPE_SIZE'. Otherwise,
836 it is the constant value that is the largest value that `LONG_TYPE_SIZE' can
837 have at run-time. This is used in `cpp'. */
838/* #define MAX_LONG_TYPE_SIZE */
839
840/* A C expression for the size in bits of the type `long long' on the target
841 machine. If you don't define this, the default is two words. If you want
842 to support GNU Ada on your machine, the value of macro must be at least 64. */
843#define LONG_LONG_TYPE_SIZE 64
844
845/* A C expression for the size in bits of the type `char' on the target
846 machine. If you don't define this, the default is one quarter of a word.
847 (If this would be less than one storage unit, it is rounded up to one unit.) */
848#define CHAR_TYPE_SIZE 8
849
850/* Maximum number for the size in bits of the type `char' on the target
851 machine. If this is undefined, the default is `CHAR_TYPE_SIZE'. Otherwise,
852 it is the constant value that is the largest value that `CHAR_TYPE_SIZE' can
853 have at run-time. This is used in `cpp'. */
854/* #define MAX_CHAR_TYPE_SIZE */
855
856/* A C expression for the size in bits of the type `float' on the target
857 machine. If you don't define this, the default is one word. */
858#define FLOAT_TYPE_SIZE 32
859
860/* A C expression for the size in bits of the type `double' on the target
861 machine. If you don't define this, the default is two words. */
862#define DOUBLE_TYPE_SIZE 64
863
864/* A C expression for the size in bits of the type `long double' on the target
865 machine. If you don't define this, the default is two words. */
866#define LONG_DOUBLE_TYPE_SIZE 64
867
868/* An expression whose value is 1 or 0, according to whether the type `char'
869 should be signed or unsigned by default. The user can always override this
870 default with the options `-fsigned-char' and `-funsigned-char'. */
871#define DEFAULT_SIGNED_CHAR 0
872
873/* A C expression to determine whether to give an `enum' type only as many
874 bytes as it takes to represent the range of possible values of that type. A
875 nonzero value means to do that; a zero value means all `enum' types should
876 be allocated like `int'.
877
878 If you don't define the macro, the default is 0. */
879/* #define DEFAULT_SHORT_ENUMS */
880
881/* A C expression for a string describing the name of the data type to use for
882 size values. The typedef name `size_t' is defined using the contents of the
883 string.
884
885 The string can contain more than one keyword. If so, separate them with
886 spaces, and write first any length keyword, then `unsigned' if appropriate,
887 and finally `int'. The string must exactly match one of the data type names
888 defined in the function `init_decl_processing' in the file `c-decl.c'. You
889 may not omit `int' or change the order--that would cause the compiler to
890 crash on startup.
891
892 If you don't define this macro, the default is `"long unsigned int"'.
893
894 Defined in svr4.h. */
895#define SIZE_TYPE "unsigned int"
896
897/* A C expression for a string describing the name of the data type to use for
898 the result of subtracting two pointers. The typedef name `ptrdiff_t' is
899 defined using the contents of the string. See `SIZE_TYPE' above for more
900 information.
901
902 If you don't define this macro, the default is `"long int"'.
903
904 Defined in svr4.h. */
905#define PTRDIFF_TYPE "int"
906
907/* A C expression for a string describing the name of the data type to use for
908 wide characters. The typedef name `wchar_t' is defined using the contents
909 of the string. See `SIZE_TYPE' above for more information.
910
911 If you don't define this macro, the default is `"int"'.
912
913 Defined in svr4.h, to "long int". */
914/* #define WCHAR_TYPE "long int" */
915
916/* A C expression for the size in bits of the data type for wide characters.
917 This is used in `cpp', which cannot make use of `WCHAR_TYPE'.
918
919 Defined in svr4.h. */
920#undef WCHAR_TYPE_SIZE
921#define WCHAR_TYPE_SIZE 32
922
923/* Maximum number for the size in bits of the data type for wide characters.
924 If this is undefined, the default is `WCHAR_TYPE_SIZE'. Otherwise, it is
925 the constant value that is the largest value that `WCHAR_TYPE_SIZE' can have
926 at run-time. This is used in `cpp'. */
927/* #define MAX_WCHAR_TYPE_SIZE */
928
929/* Define this macro if the type of Objective C selectors should be `int'.
930
931 If this macro is not defined, then selectors should have the type `struct
932 objc_selector *'. */
933/* #define OBJC_INT_SELECTORS */
934
935/* Define this macro if the compiler can group all the selectors together into
936 a vector and use just one label at the beginning of the vector. Otherwise,
937 the compiler must give each selector its own assembler label.
938
939 On certain machines, it is important to have a separate label for each
940 selector because this enables the linker to eliminate duplicate selectors. */
941/* #define OBJC_SELECTORS_WITHOUT_LABELS */
942
943\f
944/* Register Basics */
945
946/* Number of hardware registers known to the compiler. They receive numbers 0
947 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number
948 really is assigned the number `FIRST_PSEUDO_REGISTER'. */
949#define FIRST_PSEUDO_REGISTER 19
950
951/* An initializer that says which registers are used for fixed purposes all
952 throughout the compiled code and are therefore not available for general
953 allocation. These would include the stack pointer, the frame pointer
954 (except on machines where that can be used as a general register when no
955 frame pointer is needed), the program counter on machines where that is
956 considered one of the addressable registers, and any other numbered register
957 with a standard use.
958
959 This information is expressed as a sequence of numbers, separated by commas
960 and surrounded by braces. The Nth number is 1 if register N is fixed, 0
961 otherwise.
962
963 The table initialized from this macro, and the table initialized by the
964 following one, may be overridden at run time either automatically, by the
965 actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the
966 command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */
967#define FIXED_REGISTERS \
968 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1 }
969
970/* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in
971 general) by function calls as well as for fixed registers. This macro
972 therefore identifies the registers that are not available for general
973 allocation of values that must live across function calls.
974
975 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically
976 saves it on function entry and restores it on function exit, if the register
977 is used within the function. */
978#define CALL_USED_REGISTERS \
979 { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1 }
980
981/* Zero or more C statements that may conditionally modify two variables
982 `fixed_regs' and `call_used_regs' (both of type `char []') after they have
983 been initialized from the two preceding macros.
984
985 This is necessary in case the fixed or call-clobbered registers depend on
986 target flags.
987
988 You need not define this macro if it has no work to do.
989
990 If the usage of an entire class of registers depends on the target flags,
991 you may indicate this to GCC by using this macro to modify `fixed_regs' and
992 `call_used_regs' to 1 for each of the registers in the classes which should
993 not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return
994 `NO_REGS' if it is called with a letter for a class that shouldn't be used.
995
996 (However, if this class is not included in `GENERAL_REGS' and all of the
997 insn patterns whose constraints permit this class are controlled by target
998 switches, then GCC will automatically avoid using these registers when the
999 target switches are opposed to them.) */
1000/* #define CONDITIONAL_REGISTER_USAGE */
1001
1002/* If this macro is defined and has a nonzero value, it means that `setjmp' and
1003 related functions fail to save the registers, or that `longjmp' fails to
1004 restore them. To compensate, the compiler avoids putting variables in
1005 registers in functions that use `setjmp'. */
1006/* #define NON_SAVING_SETJMP */
1007
1008/* Define this macro if the target machine has register windows. This C
1009 expression returns the register number as seen by the called function
1010 corresponding to the register number OUT as seen by the calling function.
1011 Return OUT if register number OUT is not an outbound register. */
1012/* #define INCOMING_REGNO(OUT) */
1013
1014/* Define this macro if the target machine has register windows. This C
1015 expression returns the register number as seen by the calling function
1016 corresponding to the register number IN as seen by the called function.
1017 Return IN if register number IN is not an inbound register. */
1018/* #define OUTGOING_REGNO(IN) */
1019
1020\f
1021/* Order of allocation of registers */
1022
1023/* If defined, an initializer for a vector of integers, containing the numbers
1024 of hard registers in the order in which GNU CC should prefer to use them
1025 (from most preferred to least).
1026
1027 If this macro is not defined, registers are used lowest numbered first (all
1028 else being equal).
1029
1030 One use of this macro is on machines where the highest numbered registers
1031 must always be saved and the save-multiple-registers instruction supports
1032 only sequences of consecutive registers. On such machines, define
1033 `REG_ALLOC_ORDER' to be an initializer that lists the highest numbered
1034 allocatable register first. */
da6e254e 1035#define REG_ALLOC_ORDER { 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 10, 11, 12, 13, 14, 15, 16 }
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1036
1037/* A C statement (sans semicolon) to choose the order in which to allocate hard
1038 registers for pseudo-registers local to a basic block.
1039
1040 Store the desired register order in the array `reg_alloc_order'. Element 0
1041 should be the register to allocate first; element 1, the next register; and
1042 so on.
1043
1044 The macro body should not assume anything about the contents of
1045 `reg_alloc_order' before execution of the macro.
1046
1047 On most machines, it is not necessary to define this macro. */
1048/* #define ORDER_REGS_FOR_LOCAL_ALLOC */
1049
1050\f
1051/* How Values Fit in Registers */
1052
1053/* A C expression for the number of consecutive hard registers, starting at
1054 register number REGNO, required to hold a value of mode MODE.
1055
1056 On a machine where all registers are exactly one word, a suitable definition
1057 of this macro is
1058
1059 #define HARD_REGNO_NREGS(REGNO, MODE) \
1060 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
1061 / UNITS_PER_WORD)) */
1062#define HARD_REGNO_NREGS(REGNO, MODE) \
1063 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1064
1065/* A C expression that is nonzero if it is permissible to store a value of mode
1066 MODE in hard register number REGNO (or in several registers starting with
1067 that one). For a machine where all registers are equivalent, a suitable
1068 definition is
1069
1070 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
1071
1072 It is not necessary for this macro to check for the numbers of fixed
1073 registers, because the allocation mechanism considers them to be always
1074 occupied.
1075
1076 On some machines, double-precision values must be kept in even/odd register
1077 pairs. The way to implement that is to define this macro to reject odd
1078 register numbers for such modes.
1079
1080 The minimum requirement for a mode to be OK in a register is that the
1081 `movMODE' instruction pattern support moves between the register and any
1082 other hard register for which the mode is OK; and that moving a value into
1083 the register and back out not alter it.
1084
1085 Since the same instruction used to move `SImode' will work for all narrower
1086 integer modes, it is not necessary on any machine for `HARD_REGNO_MODE_OK'
1087 to distinguish between these modes, provided you define patterns `movhi',
1088 etc., to take advantage of this. This is useful because of the interaction
1089 between `HARD_REGNO_MODE_OK' and `MODES_TIEABLE_P'; it is very desirable for
1090 all integer modes to be tieable.
1091
1092 Many machines have special registers for floating point arithmetic. Often
1093 people assume that floating point machine modes are allowed only in floating
1094 point registers. This is not true. Any registers that can hold integers
1095 can safely *hold* a floating point machine mode, whether or not floating
1096 arithmetic can be done on it in those registers. Integer move instructions
1097 can be used to move the values.
1098
1099 On some machines, though, the converse is true: fixed-point machine modes
1100 may not go in floating registers. This is true if the floating registers
1101 normalize any value stored in them, because storing a non-floating value
1102 there would garble it. In this case, `HARD_REGNO_MODE_OK' should reject
1103 fixed-point machine modes in floating registers. But if the floating
1104 registers do not automatically normalize, if you can store any bit pattern
1105 in one and retrieve it unchanged without a trap, then any machine mode may
1106 go in a floating register, so you can define this macro to say so.
1107
1108 The primary significance of special floating registers is rather that they
1109 are the registers acceptable in floating point arithmetic instructions.
1110 However, this is of no concern to `HARD_REGNO_MODE_OK'. You handle it by
1111 writing the proper constraints for those instructions.
1112
1113 On some machines, the floating registers are especially slow to access, so
1114 that it is better to store a value in a stack frame than in such a register
1115 if floating point arithmetic is not being done. As long as the floating
1116 registers are not in class `GENERAL_REGS', they will not be used unless some
1117 pattern's constraint asks for one. */
1118#define HARD_REGNO_MODE_OK(REGNO, MODE) ((REGNO) != 16 || (MODE) == BImode)
1119
1120/* A C expression that is nonzero if it is desirable to choose register
1121 allocation so as to avoid move instructions between a value of mode MODE1
1122 and a value of mode MODE2.
1123
1124 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are
1125 ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be
1126 zero. */
1127#define MODES_TIEABLE_P(MODE1, MODE2) ((MODE1) != BImode && (MODE2) != BImode)
1128
1129/* Define this macro if the compiler should avoid copies to/from CCmode
1130 registers. You should only define this macro if support fo copying to/from
1131 CCmode is incomplete. */
1132/* #define AVOID_CCMODE_COPIES */
1133
1134\f
1135/* Handling Leaf Functions */
1136
1137/* A C initializer for a vector, indexed by hard register number, which
1138 contains 1 for a register that is allowable in a candidate for leaf function
1139 treatment.
1140
1141 If leaf function treatment involves renumbering the registers, then the
1142 registers marked here should be the ones before renumbering--those that GNU
1143 CC would ordinarily allocate. The registers which will actually be used in
1144 the assembler code, after renumbering, should not be marked with 1 in this
1145 vector.
1146
1147 Define this macro only if the target machine offers a way to optimize the
1148 treatment of leaf functions. */
1149/* #define LEAF_REGISTERS */
1150
1151/* A C expression whose value is the register number to which REGNO should be
1152 renumbered, when a function is treated as a leaf function.
1153
1154 If REGNO is a register number which should not appear in a leaf function
1155 before renumbering, then the expression should yield -1, which will cause
1156 the compiler to abort.
1157
1158 Define this macro only if the target machine offers a way to optimize the
1159 treatment of leaf functions, and registers need to be renumbered to do this. */
1160/* #define LEAF_REG_REMAP(REGNO) */
1161
1162\f
1163/* Registers That Form a Stack. */
1164
1165/* Define this if the machine has any stack-like registers. */
1166/* #define STACK_REGS */
1167
1168/* The number of the first stack-like register. This one is the top
1169 of the stack. */
1170/* #define FIRST_STACK_REG */
1171
1172/* The number of the last stack-like register. This one is the
1173 bottom of the stack. */
1174/* #define LAST_STACK_REG */
1175
1176\f
1177/* Register Classes */
1178
1179/* An enumeral type that must be defined with all the register class names as
1180 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
1181 register class, followed by one more enumeral value, `LIM_REG_CLASSES',
1182 which is not a register class but rather tells how many classes there are.
1183
1184 Each register class has a number, which is the value of casting the class
1185 name to type `int'. The number serves as an index in many of the tables
1186 described below. */
1187enum reg_class
1188{
1189 NO_REGS,
1190 R0_REGS,
1191 R1_REGS,
1192 TWO_REGS,
1193 R2_REGS,
1194 EIGHT_REGS,
1195 R8_REGS,
da6e254e 1196 ICALL_REGS,
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1197 GENERAL_REGS,
1198 CARRY_REGS,
1199 ALL_REGS,
1200 LIM_REG_CLASSES
1201};
1202
1203/* The number of distinct register classes, defined as follows:
1204
1205 #define N_REG_CLASSES (int) LIM_REG_CLASSES */
1206#define N_REG_CLASSES ((int) LIM_REG_CLASSES)
1207
1208/* An initializer containing the names of the register classes as C string
1209 constants. These names are used in writing some of the debugging dumps. */
1210#define REG_CLASS_NAMES \
1211{ \
1212 "NO_REGS", \
1213 "R0_REGS", \
1214 "R1_REGS", \
1215 "TWO_REGS", \
1216 "R2_REGS", \
1217 "EIGHT_REGS", \
1218 "R8_REGS", \
da6e254e 1219 "ICALL_REGS", \
4b58290f
GK
1220 "GENERAL_REGS", \
1221 "CARRY_REGS", \
1222 "ALL_REGS" \
1223}
1224
1225/* An initializer containing the contents of the register classes, as integers
1226 which are bit masks. The Nth integer specifies the contents of class N.
1227 The way the integer MASK is interpreted is that register R is in the class
1228 if `MASK & (1 << R)' is 1.
1229
1230 When the machine has more than 32 registers, an integer does not suffice.
1231 Then the integers are replaced by sub-initializers, braced groupings
1232 containing several integers. Each sub-initializer must be suitable as an
1233 initializer for the type `HARD_REG_SET' which is defined in
1234 `hard-reg-set.h'. */
1235#define REG_CLASS_CONTENTS \
1236{ \
1237 0x00000, \
1238 0x00001, \
1239 0x00002, \
1240 0x00003, \
1241 0x00004, \
1242 0x000FF, \
1243 0x00100, \
da6e254e 1244 0x00300, \
4b58290f
GK
1245 0x6FFFF, \
1246 0x10000, \
1247 (1 << FIRST_PSEUDO_REGISTER) - 1 \
1248}
1249
1250/* A C expression whose value is a register class containing hard register
1251 REGNO. In general there is more than one such class; choose a class which
1252 is "minimal", meaning that no smaller class also contains the register. */
1253#define REGNO_REG_CLASS(REGNO) \
1254 ((REGNO) == 0 ? R0_REGS \
1255 : (REGNO) == 1 ? R1_REGS \
1256 : (REGNO) == 2 ? R2_REGS \
1257 : (REGNO) < 8 ? EIGHT_REGS \
1258 : (REGNO) == 8 ? R8_REGS \
1259 : (REGNO) == 16 ? CARRY_REGS \
1260 : (REGNO) <= 18 ? GENERAL_REGS \
1261 : ALL_REGS)
1262
1263/* A macro whose definition is the name of the class to which a valid base
1264 register must belong. A base register is one used in an address which is
1265 the register value plus a displacement. */
1266#define BASE_REG_CLASS GENERAL_REGS
1267
1268/* A macro whose definition is the name of the class to which a valid index
1269 register must belong. An index register is one used in an address where its
1270 value is either multiplied by a scale factor or added to another register
1271 (as well as added to a displacement). */
1272#define INDEX_REG_CLASS GENERAL_REGS
1273
1274/* A C expression which defines the machine-dependent operand constraint
1275 letters for register classes. If CHAR is such a letter, the value should be
1276 the register class corresponding to it. Otherwise, the value should be
1277 `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS',
1278 will not be passed to this macro; you do not need to handle it.
1279
1280 The following letters are unavailable, due to being used as
1281 constraints:
1282 '0'..'9'
1283 '<', '>'
1284 'E', 'F', 'G', 'H'
1285 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P'
1286 'Q', 'R', 'S', 'T', 'U'
1287 'V', 'X'
1288 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */
1289
1290#define REG_CLASS_FROM_LETTER(CHAR) \
1291 ( (CHAR) == 'a' ? R0_REGS \
1292 : (CHAR) == 'b' ? R1_REGS \
1293 : (CHAR) == 'c' ? R2_REGS \
1853547e 1294 : (CHAR) == 'd' ? R8_REGS \
4b58290f 1295 : (CHAR) == 'e' ? EIGHT_REGS \
1853547e 1296 : (CHAR) == 't' ? TWO_REGS \
4b58290f 1297 : (CHAR) == 'y' ? CARRY_REGS \
da6e254e 1298 : (CHAR) == 'z' ? ICALL_REGS \
4b58290f
GK
1299 : NO_REGS)
1300
1301/* A C expression which is nonzero if register number NUM is suitable for use
1302 as a base register in operand addresses. It may be either a suitable hard
1303 register or a pseudo register that has been allocated such a hard register. */
1304#define REGNO_OK_FOR_BASE_P(NUM) 1
1305
1306/* A C expression which is nonzero if register number NUM is suitable for use
1307 as an index register in operand addresses. It may be either a suitable hard
1308 register or a pseudo register that has been allocated such a hard register.
1309
1310 The difference between an index register and a base register is that the
1311 index register may be scaled. If an address involves the sum of two
1312 registers, neither one of them scaled, then either one may be labeled the
1313 "base" and the other the "index"; but whichever labeling is used must fit
1314 the machine's constraints of which registers may serve in each capacity.
1315 The compiler will try both labelings, looking for one that is valid, and
1316 will reload one or both registers only if neither labeling works. */
1317#define REGNO_OK_FOR_INDEX_P(NUM) REGNO_OK_FOR_BASE_P (NUM)
1318
1319/* A C expression that places additional restrictions on the register class to
1320 use when it is necessary to copy value X into a register in class CLASS.
1321 The value is a register class; perhaps CLASS, or perhaps another, smaller
1322 class. On many machines, the following definition is safe:
1323
1324 #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
1325
1326 Sometimes returning a more restrictive class makes better code. For
1327 example, on the 68000, when X is an integer constant that is in range for a
1328 `moveq' instruction, the value of this macro is always `DATA_REGS' as long
1329 as CLASS includes the data registers. Requiring a data register guarantees
1330 that a `moveq' will be used.
1331
1332 If X is a `const_double', by returning `NO_REGS' you can force X into a
1333 memory constant. This is useful on certain machines where immediate
1334 floating values cannot be loaded into certain kinds of registers.
1335
1336 This declaration must be present. */
1337#define PREFERRED_RELOAD_CLASS(X, CLASS) \
c6243b4c 1338 xstormy16_preferred_reload_class (X, CLASS)
4b58290f
GK
1339
1340/* Like `PREFERRED_RELOAD_CLASS', but for output reloads instead of input
1341 reloads. If you don't define this macro, the default is to use CLASS,
1342 unchanged. */
1343#define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) \
c6243b4c 1344 xstormy16_preferred_reload_class (X, CLASS)
4b58290f
GK
1345
1346/* A C expression that places additional restrictions on the register class to
1347 use when it is necessary to be able to hold a value of mode MODE in a reload
1348 register for which class CLASS would ordinarily be used.
1349
1350 Unlike `PREFERRED_RELOAD_CLASS', this macro should be used when there are
1351 certain modes that simply can't go in certain reload classes.
1352
1353 The value is a register class; perhaps CLASS, or perhaps another, smaller
1354 class.
1355
1356 Don't define this macro unless the target machine has limitations which
1357 require the macro to do something nontrivial. */
1358/* #define LIMIT_RELOAD_CLASS(MODE, CLASS) */
1359
1360/* Many machines have some registers that cannot be copied directly to or from
1361 memory or even from other types of registers. An example is the `MQ'
1362 register, which on most machines, can only be copied to or from general
1363 registers, but not memory. Some machines allow copying all registers to and
1364 from memory, but require a scratch register for stores to some memory
1365 locations (e.g., those with symbolic address on the RT, and those with
1366 certain symbolic address on the Sparc when compiling PIC). In some cases,
1367 both an intermediate and a scratch register are required.
1368
1369 You should define these macros to indicate to the reload phase that it may
1370 need to allocate at least one register for a reload in addition to the
1371 register to contain the data. Specifically, if copying X to a register
1372 CLASS in MODE requires an intermediate register, you should define
1373 `SECONDARY_INPUT_RELOAD_CLASS' to return the largest register class all of
1374 whose registers can be used as intermediate registers or scratch registers.
1375
1376 If copying a register CLASS in MODE to X requires an intermediate or scratch
1377 register, `SECONDARY_OUTPUT_RELOAD_CLASS' should be defined to return the
1378 largest register class required. If the requirements for input and output
1379 reloads are the same, the macro `SECONDARY_RELOAD_CLASS' should be used
1380 instead of defining both macros identically.
1381
1382 The values returned by these macros are often `GENERAL_REGS'. Return
1383 `NO_REGS' if no spare register is needed; i.e., if X can be directly copied
1384 to or from a register of CLASS in MODE without requiring a scratch register.
1385 Do not define this macro if it would always return `NO_REGS'.
1386
1387 If a scratch register is required (either with or without an intermediate
1388 register), you should define patterns for `reload_inM' or `reload_outM', as
1389 required.. These patterns, which will normally be implemented with a
1390 `define_expand', should be similar to the `movM' patterns, except that
1391 operand 2 is the scratch register.
1392
1393 Define constraints for the reload register and scratch register that contain
1394 a single register class. If the original reload register (whose class is
1395 CLASS) can meet the constraint given in the pattern, the value returned by
1396 these macros is used for the class of the scratch register. Otherwise, two
1397 additional reload registers are required. Their classes are obtained from
1398 the constraints in the insn pattern.
1399
1400 X might be a pseudo-register or a `subreg' of a pseudo-register, which could
1401 either be in a hard register or in memory. Use `true_regnum' to find out;
1402 it will return -1 if the pseudo is in memory and the hard register number if
1403 it is in a register.
1404
1405 These macros should not be used in the case where a particular class of
1406 registers can only be copied to memory and not to another class of
1407 registers. In that case, secondary reload registers are not needed and
1408 would not be helpful. Instead, a stack location must be used to perform the
1409 copy and the `movM' pattern should use memory as a intermediate storage.
1410 This case often occurs between floating-point and general registers. */
1411
1412/* This chip has the interesting property that only the first eight
1413 registers can be moved to/from memory. */
1414#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
c6243b4c 1415 xstormy16_secondary_reload_class (CLASS, MODE, X)
4b58290f
GK
1416
1417/* #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) */
1418/* #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) */
1419
1420/* Certain machines have the property that some registers cannot be copied to
1421 some other registers without using memory. Define this macro on those
1422 machines to be a C expression that is non-zero if objects of mode M in
1423 registers of CLASS1 can only be copied to registers of class CLASS2 by
1424 storing a register of CLASS1 into memory and loading that memory location
1425 into a register of CLASS2.
1426
1427 Do not define this macro if its value would always be zero. */
1428/* #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, M) */
1429
1430/* Normally when `SECONDARY_MEMORY_NEEDED' is defined, the compiler allocates a
1431 stack slot for a memory location needed for register copies. If this macro
1432 is defined, the compiler instead uses the memory location defined by this
1433 macro.
1434
1435 Do not define this macro if you do not define
1436 `SECONDARY_MEMORY_NEEDED'. */
1437/* #define SECONDARY_MEMORY_NEEDED_RTX(MODE) */
1438
1439/* When the compiler needs a secondary memory location to copy between two
1440 registers of mode MODE, it normally allocates sufficient memory to hold a
1441 quantity of `BITS_PER_WORD' bits and performs the store and load operations
1442 in a mode that many bits wide and whose class is the same as that of MODE.
1443
1444 This is right thing to do on most machines because it ensures that all bits
1445 of the register are copied and prevents accesses to the registers in a
1446 narrower mode, which some machines prohibit for floating-point registers.
1447
1448 However, this default behavior is not correct on some machines, such as the
1449 DEC Alpha, that store short integers in floating-point registers differently
1450 than in integer registers. On those machines, the default widening will not
1451 work correctly and you must define this macro to suppress that widening in
1452 some cases. See the file `alpha.h' for details.
1453
1454 Do not define this macro if you do not define `SECONDARY_MEMORY_NEEDED' or
1455 if widening MODE to a mode that is `BITS_PER_WORD' bits wide is correct for
1456 your machine. */
1457/* #define SECONDARY_MEMORY_NEEDED_MODE(MODE) */
1458
1459/* Normally the compiler avoids choosing registers that have been explicitly
1460 mentioned in the rtl as spill registers (these registers are normally those
1461 used to pass parameters and return values). However, some machines have so
1462 few registers of certain classes that there would not be enough registers to
1463 use as spill registers if this were done.
1464
1465 Define `SMALL_REGISTER_CLASSES' to be an expression with a non-zero value on
1466 these machines. When this macro has a non-zero value, the compiler allows
1467 registers explicitly used in the rtl to be used as spill registers but
1468 avoids extending the lifetime of these registers.
1469
1470 It is always safe to define this macro with a non-zero value, but if you
1471 unnecessarily define it, you will reduce the amount of optimizations that
1472 can be performed in some cases. If you do not define this macro with a
1473 non-zero value when it is required, the compiler will run out of spill
1474 registers and print a fatal error message. For most machines, you should
1475 not define this macro at all. */
1476/* #define SMALL_REGISTER_CLASSES */
1477
1478/* A C expression whose value is nonzero if pseudos that have been assigned to
1479 registers of class CLASS would likely be spilled because registers of CLASS
1480 are needed for spill registers.
1481
1482 The default value of this macro returns 1 if CLASS has exactly one register
1483 and zero otherwise. On most machines, this default should be used. Only
1484 define this macro to some other expression if pseudo allocated by
1485 `local-alloc.c' end up in memory because their hard registers were needed
1486 for spill registers. If this macro returns nonzero for those classes, those
1487 pseudos will only be allocated by `global.c', which knows how to reallocate
1488 the pseudo to another register. If there would not be another register
1489 available for reallocation, you should not change the definition of this
1490 macro since the only effect of such a definition would be to slow down
1491 register allocation. */
1492/* #define CLASS_LIKELY_SPILLED_P(CLASS) */
1493
1494/* A C expression for the maximum number of consecutive registers of
1495 class CLASS needed to hold a value of mode MODE.
1496
1497 This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value
1498 of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of
1499 `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS.
1500
1501 This macro helps control the handling of multiple-word values in
1502 the reload pass.
1503
1504 This declaration is required. */
1505#define CLASS_MAX_NREGS(CLASS, MODE) \
1506 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
1507
1508/* If defined, a C expression for a class that contains registers which the
1509 compiler must always access in a mode that is the same size as the mode in
1510 which it loaded the register.
1511
1512 For the example, loading 32-bit integer or floating-point objects into
1513 floating-point registers on the Alpha extends them to 64-bits. Therefore
1514 loading a 64-bit object and then storing it as a 32-bit object does not
1515 store the low-order 32-bits, as would be the case for a normal register.
1516 Therefore, `alpha.h' defines this macro as `FLOAT_REGS'. */
1517/* #define CLASS_CANNOT_CHANGE_SIZE */
1518
1519/* A C expression that defines the machine-dependent operand constraint letters
1520 (`I', `J', `K', .. 'P') that specify particular ranges of integer values.
1521 If C is one of those letters, the expression should check that VALUE, an
1522 integer, is in the appropriate range and return 1 if so, 0 otherwise. If C
1523 is not one of those letters, the value should be 0 regardless of VALUE. */
1524#define CONST_OK_FOR_LETTER_P(VALUE, C) \
1525 ( (C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 3 \
1526 : (C) == 'J' ? exact_log2 (VALUE) != -1 \
1527 : (C) == 'K' ? exact_log2 (~(VALUE)) != -1 \
1528 : (C) == 'L' ? (VALUE) >= 0 && (VALUE) <= 255 \
1529 : (C) == 'M' ? (VALUE) >= -255 && (VALUE) <= 0 \
1530 : (C) == 'N' ? (VALUE) >= -3 && (VALUE) <= 0 \
1531 : (C) == 'O' ? (VALUE) >= 1 && (VALUE) <= 4 \
1532 : (C) == 'P' ? (VALUE) >= -4 && (VALUE) <= -1 \
1533 : 0 )
1534
1535/* A C expression that defines the machine-dependent operand constraint letters
1536 (`G', `H') that specify particular ranges of `const_double' values.
1537
1538 If C is one of those letters, the expression should check that VALUE, an RTX
1539 of code `const_double', is in the appropriate range and return 1 if so, 0
1540 otherwise. If C is not one of those letters, the value should be 0
1541 regardless of VALUE.
1542
1543 `const_double' is used for all floating-point constants and for `DImode'
1544 fixed-point constants. A given letter can accept either or both kinds of
1545 values. It can use `GET_MODE' to distinguish between these kinds. */
1546#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 0
1547
1548/* A C expression that defines the optional machine-dependent constraint
1549 letters (`Q', `R', `S', `T', `U') that can be used to segregate specific
1550 types of operands, usually memory references, for the target machine.
1551 Normally this macro will not be defined. If it is required for a particular
1552 target machine, it should return 1 if VALUE corresponds to the operand type
1553 represented by the constraint letter C. If C is not defined as an extra
1554 constraint, the value returned should be 0 regardless of VALUE.
1555
1556 For example, on the ROMP, load instructions cannot have their output in r0
1557 if the memory reference contains a symbolic address. Constraint letter `Q'
1558 is defined as representing a memory address that does *not* contain a
1559 symbolic address. An alternative is specified with a `Q' constraint on the
1560 input and `r' on the output. The next alternative specifies `m' on the
1561 input and a register class that does not include r0 on the output. */
1562#define EXTRA_CONSTRAINT(VALUE, C) \
c6243b4c 1563 xstormy16_extra_constraint_p (VALUE, C)
4b58290f
GK
1564
1565\f
1566/* Basic Stack Layout */
1567
1568/* Define this macro if pushing a word onto the stack moves the stack pointer
1569 to a smaller address.
1570
1571 When we say, "define this macro if ...," it means that the compiler checks
1572 this macro only with `#ifdef' so the precise definition used does not
1573 matter. */
1574/* #define STACK_GROWS_DOWNWARD */
1575
1576/* We want to use post-increment instructions to push things on the stack,
1577 because we don't have any pre-increment ones. */
1578#define STACK_PUSH_CODE POST_INC
1579
1580/* Define this macro if the addresses of local variable slots are at negative
1581 offsets from the frame pointer. */
1582/* #define FRAME_GROWS_DOWNWARD */
1583
1584/* Define this macro if successive arguments to a function occupy decreasing
1585 addresses on the stack. */
1586#define ARGS_GROW_DOWNWARD 1
1587
1588/* Offset from the frame pointer to the first local variable slot to be
1589 allocated.
1590
1591 If `FRAME_GROWS_DOWNWARD', find the next slot's offset by
1592 subtracting the first slot's length from `STARTING_FRAME_OFFSET'.
1593 Otherwise, it is found by adding the length of the first slot to
1594 the value `STARTING_FRAME_OFFSET'. */
1595#define STARTING_FRAME_OFFSET 0
1596
1597/* Offset from the stack pointer register to the first location at which
1598 outgoing arguments are placed. If not specified, the default value of zero
1599 is used. This is the proper value for most machines.
1600
1601 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
1602 location at which outgoing arguments are placed. */
1603/* #define STACK_POINTER_OFFSET */
1604
1605/* Offset from the argument pointer register to the first argument's address.
1606 On some machines it may depend on the data type of the function.
1607
1608 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
1609 argument's address. */
1610#define FIRST_PARM_OFFSET(FUNDECL) 0
1611
1612/* Offset from the stack pointer register to an item dynamically allocated on
1613 the stack, e.g., by `alloca'.
1614
1615 The default value for this macro is `STACK_POINTER_OFFSET' plus the length
1616 of the outgoing arguments. The default is correct for most machines. See
1617 `function.c' for details. */
1618/* #define STACK_DYNAMIC_OFFSET(FUNDECL) */
1619
1620/* A C expression whose value is RTL representing the address in a stack frame
1621 where the pointer to the caller's frame is stored. Assume that FRAMEADDR is
1622 an RTL expression for the address of the stack frame itself.
1623
1624 If you don't define this macro, the default is to return the value of
1625 FRAMEADDR--that is, the stack frame address is also the address of the stack
1626 word that points to the previous frame. */
1627/* #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) */
1628
1629/* If defined, a C expression that produces the machine-specific code to setup
1630 the stack so that arbitrary frames can be accessed. For example, on the
1631 Sparc, we must flush all of the register windows to the stack before we can
1632 access arbitrary stack frames. This macro will seldom need to be defined. */
1633/* #define SETUP_FRAME_ADDRESSES() */
1634
1635/* A C expression whose value is RTL representing the value of the return
1636 address for the frame COUNT steps up from the current frame, after the
1637 prologue. FRAMEADDR is the frame pointer of the COUNT frame, or the frame
1638 pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' is
1639 defined.
1640
1641 The value of the expression must always be the correct address when COUNT is
1642 zero, but may be `NULL_RTX' if there is not way to determine the return
1643 address of other frames. */
1644#define RETURN_ADDR_RTX(COUNT, FRAMEADDR) \
1645 ((COUNT) == 0 \
1646 ? gen_rtx_MEM (Pmode, arg_pointer_rtx) \
1647 : NULL_RTX)
1648
1649/* Define this if the return address of a particular stack frame is
1650 accessed from the frame pointer of the previous stack frame. */
1651/* #define RETURN_ADDR_IN_PREVIOUS_FRAME */
1652
1653/* A C expression whose value is RTL representing the location of the incoming
1654 return address at the beginning of any function, before the prologue. This
1655 RTL is either a `REG', indicating that the return value is saved in `REG',
1656 or a `MEM' representing a location in the stack.
1657
1658 You only need to define this macro if you want to support call frame
1659 debugging information like that provided by DWARF 2. */
1660#define INCOMING_RETURN_ADDR_RTX \
1661 gen_rtx_MEM (SImode, gen_rtx_PLUS (Pmode, stack_pointer_rtx, GEN_INT (-4)))
1662
1663/* A C expression whose value is an integer giving the offset, in bytes, from
1664 the value of the stack pointer register to the top of the stack frame at the
1665 beginning of any function, before the prologue. The top of the frame is
1666 defined to be the value of the stack pointer in the previous frame, just
1667 before the call instruction.
1668
1669 You only need to define this macro if you want to support call frame
1670 debugging information like that provided by DWARF 2. */
c6243b4c 1671#define INCOMING_FRAME_SP_OFFSET (xstormy16_interrupt_function_p () ? 6 : 4)
4b58290f
GK
1672
1673\f
1674/* Stack Checking. */
1675
1676/* A nonzero value if stack checking is done by the configuration files in a
1677 machine-dependent manner. You should define this macro if stack checking is
1678 require by the ABI of your machine or if you would like to have to stack
1679 checking in some more efficient way than GNU CC's portable approach. The
1680 default value of this macro is zero. */
1681/* #define STACK_CHECK_BUILTIN */
1682
1683/* An integer representing the interval at which GNU CC must generate stack
1684 probe instructions. You will normally define this macro to be no larger
1685 than the size of the "guard pages" at the end of a stack area. The default
1686 value of 4096 is suitable for most systems. */
1687/* #define STACK_CHECK_PROBE_INTERVAL */
1688
1689/* A integer which is nonzero if GNU CC should perform the stack probe as a
1690 load instruction and zero if GNU CC should use a store instruction. The
1691 default is zero, which is the most efficient choice on most systems. */
1692/* #define STACK_CHECK_PROBE_LOAD */
1693
1694/* The number of bytes of stack needed to recover from a stack overflow, for
1695 languages where such a recovery is supported. The default value of 75 words
1696 should be adequate for most machines. */
1697/* #define STACK_CHECK_PROTECT */
1698
1699/* The maximum size of a stack frame, in bytes. GNU CC will generate probe
1700 instructions in non-leaf functions to ensure at least this many bytes of
1701 stack are available. If a stack frame is larger than this size, stack
1702 checking will not be reliable and GNU CC will issue a warning. The default
1703 is chosen so that GNU CC only generates one instruction on most systems.
1704 You should normally not change the default value of this macro. */
1705/* #define STACK_CHECK_MAX_FRAME_SIZE */
1706
1707/* GNU CC uses this value to generate the above warning message. It represents
1708 the amount of fixed frame used by a function, not including space for any
1709 callee-saved registers, temporaries and user variables. You need only
1710 specify an upper bound for this amount and will normally use the default of
1711 four words. */
1712/* #define STACK_CHECK_FIXED_FRAME_SIZE */
1713
1714/* The maximum size, in bytes, of an object that GNU CC will place in the fixed
1715 area of the stack frame when the user specifies `-fstack-check'. GNU CC
1716 computed the default from the values of the above macros and you will
1717 normally not need to override that default. */
1718/* #define STACK_CHECK_MAX_VAR_SIZE */
1719
1720\f
1721/* Register That Address the Stack Frame. */
1722
1723/* The register number of the stack pointer register, which must also be a
1724 fixed register according to `FIXED_REGISTERS'. On most machines, the
1725 hardware determines which register this is. */
1726#define STACK_POINTER_REGNUM 15
1727
1728/* The register number of the frame pointer register, which is used to access
1729 automatic variables in the stack frame. On some machines, the hardware
1730 determines which register this is. On other machines, you can choose any
1731 register you wish for this purpose. */
1732#define FRAME_POINTER_REGNUM 17
1733
1734/* On some machines the offset between the frame pointer and starting offset of
1735 the automatic variables is not known until after register allocation has
1736 been done (for example, because the saved registers are between these two
1737 locations). On those machines, define `FRAME_POINTER_REGNUM' the number of
1738 a special, fixed register to be used internally until the offset is known,
1739 and define `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number
1740 used for the frame pointer.
1741
1742 You should define this macro only in the very rare circumstances when it is
1743 not possible to calculate the offset between the frame pointer and the
1744 automatic variables until after register allocation has been completed.
1745 When this macro is defined, you must also indicate in your definition of
1746 `ELIMINABLE_REGS' how to eliminate `FRAME_POINTER_REGNUM' into either
1747 `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'.
1748
1749 Do not define this macro if it would be the same as `FRAME_POINTER_REGNUM'. */
1750#define HARD_FRAME_POINTER_REGNUM 13
1751
1752/* The register number of the arg pointer register, which is used to access the
1753 function's argument list. On some machines, this is the same as the frame
1754 pointer register. On some machines, the hardware determines which register
1755 this is. On other machines, you can choose any register you wish for this
1756 purpose. If this is not the same register as the frame pointer register,
1757 then you must mark it as a fixed register according to `FIXED_REGISTERS', or
1758 arrange to be able to eliminate it. */
1759#define ARG_POINTER_REGNUM 18
1760
1761/* The register number of the return address pointer register, which is used to
1762 access the current function's return address from the stack. On some
1763 machines, the return address is not at a fixed offset from the frame pointer
1764 or stack pointer or argument pointer. This register can be defined to point
1765 to the return address on the stack, and then be converted by
1766 `ELIMINABLE_REGS' into either the frame pointer or stack pointer.
1767
1768 Do not define this macro unless there is no other way to get the return
1769 address from the stack. */
1770/* #define RETURN_ADDRESS_POINTER_REGNUM */
1771
1772/* Register numbers used for passing a function's static chain pointer. If
1773 register windows are used, the register number as seen by the called
1774 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as
1775 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers
1776 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined.
1777
1778 The static chain register need not be a fixed register.
1779
1780 If the static chain is passed in memory, these macros should not be defined;
1781 instead, the next two macros should be defined. */
e2470e1b 1782#define STATIC_CHAIN_REGNUM 1
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1783/* #define STATIC_CHAIN_INCOMING_REGNUM */
1784
1785/* If the static chain is passed in memory, these macros provide rtx giving
1786 `mem' expressions that denote where they are stored. `STATIC_CHAIN' and
1787 `STATIC_CHAIN_INCOMING' give the locations as seen by the calling and called
1788 functions, respectively. Often the former will be at an offset from the
1789 stack pointer and the latter at an offset from the frame pointer.
1790
1791 The variables `stack_pointer_rtx', `frame_pointer_rtx', and
1792 `arg_pointer_rtx' will have been initialized prior to the use of these
1793 macros and should be used to refer to those items.
1794
1795 If the static chain is passed in a register, the two previous
1796 macros should be defined instead. */
1797/* #define STATIC_CHAIN */
1798/* #define STATIC_CHAIN_INCOMING */
1799
1800\f
1801/* Eliminating the Frame Pointer and the Arg Pointer */
1802
1803/* A C expression which is nonzero if a function must have and use a frame
1804 pointer. This expression is evaluated in the reload pass. If its value is
1805 nonzero the function will have a frame pointer.
1806
1807 The expression can in principle examine the current function and decide
1808 according to the facts, but on most machines the constant 0 or the constant
1809 1 suffices. Use 0 when the machine allows code to be generated with no
1810 frame pointer, and doing so saves some time or space. Use 1 when there is
1811 no possible advantage to avoiding a frame pointer.
1812
1813 In certain cases, the compiler does not know how to produce valid code
1814 without a frame pointer. The compiler recognizes those cases and
1815 automatically gives the function a frame pointer regardless of what
1816 `FRAME_POINTER_REQUIRED' says. You don't need to worry about them.
1817
1818 In a function that does not require a frame pointer, the frame pointer
1819 register can be allocated for ordinary usage, unless you mark it as a fixed
1820 register. See `FIXED_REGISTERS' for more information. */
1821#define FRAME_POINTER_REQUIRED 0
1822
1823/* A C statement to store in the variable DEPTH_VAR the difference between the
1824 frame pointer and the stack pointer values immediately after the function
1825 prologue. The value would be computed from information such as the result
1826 of `get_frame_size ()' and the tables of registers `regs_ever_live' and
1827 `call_used_regs'.
1828
1829 If `ELIMINABLE_REGS' is defined, this macro will be not be used and need not
1830 be defined. Otherwise, it must be defined even if `FRAME_POINTER_REQUIRED'
1831 is defined to always be true; in that case, you may set DEPTH_VAR to
1832 anything. */
1833/* #define INITIAL_FRAME_POINTER_OFFSET(DEPTH_VAR) */
1834
1835/* If defined, this macro specifies a table of register pairs used to eliminate
1836 unneeded registers that point into the stack frame. If it is not defined,
1837 the only elimination attempted by the compiler is to replace references to
1838 the frame pointer with references to the stack pointer.
1839
1840 The definition of this macro is a list of structure initializations, each of
1841 which specifies an original and replacement register.
1842*/
1843
1844#define ELIMINABLE_REGS \
1845{ \
1846 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1847 {FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
1848 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1849 {ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
1850}
1851
1852/* A C expression that returns non-zero if the compiler is allowed to try to
1853 replace register number FROM with register number TO. This macro need only
1854 be defined if `ELIMINABLE_REGS' is defined, and will usually be the constant
1855 1, since most of the cases preventing register elimination are things that
1856 the compiler already knows about. */
1857
1858#define CAN_ELIMINATE(FROM, TO) \
1859 ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \
1860 ? ! frame_pointer_needed \
1861 : 1)
1862
1863/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the
1864 initial difference between the specified pair of registers. This macro must
1865 be defined if `ELIMINABLE_REGS' is defined. */
1866#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
c6243b4c 1867 (OFFSET) = xstormy16_initial_elimination_offset (FROM, TO)
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1868
1869/* Define this macro if the `longjmp' function restores registers from the
1870 stack frames, rather than from those saved specifically by `setjmp'.
1871 Certain quantities must not be kept in registers across a call to `setjmp'
1872 on such machines. */
1873/* #define LONGJMP_RESTORE_FROM_STACK */
1874
1875\f
1876/* Passing Function Arguments on the Stack */
1877
1878/* Define this macro if an argument declared in a prototype as an integral type
1879 smaller than `int' should actually be passed as an `int'. In addition to
1880 avoiding errors in certain cases of mismatch, it also makes for better code
1881 on certain machines. */
1882#define PROMOTE_PROTOTYPES 1
1883
1884/* A C expression that is the number of bytes actually pushed onto the stack
1885 when an instruction attempts to push NPUSHED bytes.
1886
1887 If the target machine does not have a push instruction, do not define this
1888 macro. That directs GNU CC to use an alternate strategy: to allocate the
1889 entire argument block and then store the arguments into it.
1890
1891 On some machines, the definition
1892
1893 #define PUSH_ROUNDING(BYTES) (BYTES)
1894
1895 will suffice. But on other machines, instructions that appear to push one
1896 byte actually push two bytes in an attempt to maintain alignment. Then the
1897 definition should be
1898
1899 #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1) */
1900#define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1)
1901
1902/* If defined, the maximum amount of space required for outgoing arguments will
1903 be computed and placed into the variable
1904 `current_function_outgoing_args_size'. No space will be pushed onto the
1905 stack for each call; instead, the function prologue should increase the
1906 stack frame size by this amount.
1907
1908 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not
1909 proper. */
1910/* #define ACCUMULATE_OUTGOING_ARGS */
1911
1912/* Define this macro if functions should assume that stack space has been
1913 allocated for arguments even when their values are passed in registers.
1914
1915 The value of this macro is the size, in bytes, of the area reserved for
1916 arguments passed in registers for the function represented by FNDECL.
1917
1918 This space can be allocated by the caller, or be a part of the
1919 machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE' says
1920 which. */
1921/* #define REG_PARM_STACK_SPACE(FNDECL) */
1922
1923/* Define these macros in addition to the one above if functions might allocate
1924 stack space for arguments even when their values are passed in registers.
1925 These should be used when the stack space allocated for arguments in
1926 registers is not a simple constant independent of the function declaration.
1927
1928 The value of the first macro is the size, in bytes, of the area that we
1929 should initially assume would be reserved for arguments passed in registers.
1930
1931 The value of the second macro is the actual size, in bytes, of the area that
1932 will be reserved for arguments passed in registers. This takes two
1933 arguments: an integer representing the number of bytes of fixed sized
1934 arguments on the stack, and a tree representing the number of bytes of
1935 variable sized arguments on the stack.
1936
1937 When these macros are defined, `REG_PARM_STACK_SPACE' will only be called
1938 for libcall functions, the current function, or for a function being called
1939 when it is known that such stack space must be allocated. In each case this
1940 value can be easily computed.
1941
1942 When deciding whether a called function needs such stack space, and how much
1943 space to reserve, GNU CC uses these two macros instead of
1944 `REG_PARM_STACK_SPACE'. */
1945/* #define MAYBE_REG_PARM_STACK_SPACE */
1946/* #define FINAL_REG_PARM_STACK_SPACE(CONST_SIZE, VAR_SIZE) */
1947
1948/* Define this if it is the responsibility of the caller to allocate the area
1949 reserved for arguments passed in registers.
1950
1951 If `ACCUMULATE_OUTGOING_ARGS' is defined, this macro controls whether the
1952 space for these arguments counts in the value of
1953 `current_function_outgoing_args_size'. */
1954/* #define OUTGOING_REG_PARM_STACK_SPACE */
1955
1956/* Define this macro if `REG_PARM_STACK_SPACE' is defined, but the stack
1957 parameters don't skip the area specified by it.
1958
1959 Normally, when a parameter is not passed in registers, it is placed on the
1960 stack beyond the `REG_PARM_STACK_SPACE' area. Defining this macro
1961 suppresses this behavior and causes the parameter to be passed on the stack
1962 in its natural location. */
1963/* #define STACK_PARMS_IN_REG_PARM_AREA */
1964
1965/* A C expression that should indicate the number of bytes of its own arguments
1966 that a function pops on returning, or 0 if the function pops no arguments
1967 and the caller must therefore pop them all after the function returns.
1968
1969 FUNDECL is a C variable whose value is a tree node that describes the
1970 function in question. Normally it is a node of type `FUNCTION_DECL' that
1971 describes the declaration of the function. From this it is possible to
91d231cb 1972 obtain the DECL_ATTRIBUTES of the function.
4b58290f
GK
1973
1974 FUNTYPE is a C variable whose value is a tree node that describes the
1975 function in question. Normally it is a node of type `FUNCTION_TYPE' that
1976 describes the data type of the function. From this it is possible to obtain
1977 the data types of the value and arguments (if known).
1978
1979 When a call to a library function is being considered, FUNTYPE will contain
1980 an identifier node for the library function. Thus, if you need to
1981 distinguish among various library functions, you can do so by their names.
1982 Note that "library function" in this context means a function used to
1983 perform arithmetic, whose name is known specially in the compiler and was
1984 not mentioned in the C code being compiled.
1985
1986 STACK-SIZE is the number of bytes of arguments passed on the stack. If a
1987 variable number of bytes is passed, it is zero, and argument popping will
1988 always be the responsibility of the calling function.
1989
1990 On the Vax, all functions always pop their arguments, so the definition of
1991 this macro is STACK-SIZE. On the 68000, using the standard calling
1992 convention, no functions pop their arguments, so the value of the macro is
1993 always 0 in this case. But an alternative calling convention is available
1994 in which functions that take a fixed number of arguments pop them but other
1995 functions (such as `printf') pop nothing (the caller pops all). When this
1996 convention is in use, FUNTYPE is examined to determine whether a function
1997 takes a fixed number of arguments. */
1998#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
1999
2000\f
2001/* Function Arguments in Registers */
2002
da6e254e 2003#define NUM_ARGUMENT_REGISTERS 6
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GK
2004#define FIRST_ARGUMENT_REGISTER 2
2005
c6243b4c 2006#define XSTORMY16_WORD_SIZE(TYPE, MODE) \
4b58290f
GK
2007 ((((TYPE) ? int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE)) \
2008 + 1) \
2009 / 2)
2010
2011/* A C expression that controls whether a function argument is passed in a
2012 register, and which register.
2013
2014 The arguments are CUM, of type CUMULATIVE_ARGS, which summarizes
2015 (in a way defined by INIT_CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE)
2016 all of the previous arguments so far passed in registers; MODE, the
2017 machine mode of the argument; TYPE, the data type of the argument
2018 as a tree node or 0 if that is not known (which happens for C
2019 support library functions); and NAMED, which is 1 for an ordinary
2020 argument and 0 for nameless arguments that correspond to `...' in
2021 the called function's prototype.
2022
2023 The value of the expression should either be a `reg' RTX for the hard
2024 register in which to pass the argument, or zero to pass the argument on the
2025 stack.
2026
2027 For machines like the Vax and 68000, where normally all arguments are
2028 pushed, zero suffices as a definition.
2029
2030 The usual way to make the ANSI library `stdarg.h' work on a machine where
2031 some arguments are usually passed in registers, is to cause nameless
2032 arguments to be passed on the stack instead. This is done by making
2033 `FUNCTION_ARG' return 0 whenever NAMED is 0.
2034
2035 You may use the macro `MUST_PASS_IN_STACK (MODE, TYPE)' in the definition of
2036 this macro to determine if this argument is of a type that must be passed in
2037 the stack. If `REG_PARM_STACK_SPACE' is not defined and `FUNCTION_ARG'
2038 returns non-zero for such an argument, the compiler will abort. If
2039 `REG_PARM_STACK_SPACE' is defined, the argument will be computed in the
2040 stack and then loaded into a register. */
2041#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
2042 ((MODE) == VOIDmode ? const0_rtx \
c6243b4c 2043 : (CUM) + XSTORMY16_WORD_SIZE (TYPE, MODE) > NUM_ARGUMENT_REGISTERS ? 0 \
4b58290f
GK
2044 : gen_rtx_REG (MODE, (CUM) + 2))
2045
2046/* Define this macro if the target machine has "register windows", so that the
2047 register in which a function sees an arguments is not necessarily the same
2048 as the one in which the caller passed the argument.
2049
2050 For such machines, `FUNCTION_ARG' computes the register in which the caller
2051 passes the value, and `FUNCTION_INCOMING_ARG' should be defined in a similar
2052 fashion to tell the function being called where the arguments will arrive.
2053
2054 If `FUNCTION_INCOMING_ARG' is not defined, `FUNCTION_ARG' serves both
2055 purposes. */
2056/* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) */
2057
2058/* A C expression for the number of words, at the beginning of an argument,
2059 must be put in registers. The value must be zero for arguments that are
2060 passed entirely in registers or that are entirely pushed on the stack.
2061
2062 On some machines, certain arguments must be passed partially in registers
2063 and partially in memory. On these machines, typically the first N words of
2064 arguments are passed in registers, and the rest on the stack. If a
2065 multi-word argument (a `double' or a structure) crosses that boundary, its
2066 first few words must be passed in registers and the rest must be pushed.
2067 This macro tells the compiler when this occurs, and how many of the words
2068 should go in registers.
2069
2070 `FUNCTION_ARG' for these arguments should return the first register to be
2071 used by the caller for this argument; likewise `FUNCTION_INCOMING_ARG', for
2072 the called function. */
2073#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
2074
2075/* A C expression that indicates when an argument must be passed by reference.
2076 If nonzero for an argument, a copy of that argument is made in memory and a
2077 pointer to the argument is passed instead of the argument itself. The
2078 pointer is passed in whatever way is appropriate for passing a pointer to
2079 that type.
2080
2081 On machines where `REG_PARM_STACK_SPACE' is not defined, a suitable
2082 definition of this macro might be
2083 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
2084 MUST_PASS_IN_STACK (MODE, TYPE) */
2085#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) 0
2086
2087/* If defined, a C expression that indicates when it is more
2088 desirable to keep an argument passed by invisible reference as a
2089 reference, rather than copying it to a pseudo register. */
2090/* #define FUNCTION_ARG_KEEP_AS_REFERENCE(CUM, MODE, TYPE, NAMED) */
2091
2092/* If defined, a C expression that indicates when it is the called function's
2093 responsibility to make a copy of arguments passed by invisible reference.
2094 Normally, the caller makes a copy and passes the address of the copy to the
2095 routine being called. When FUNCTION_ARG_CALLEE_COPIES is defined and is
2096 nonzero, the caller does not make a copy. Instead, it passes a pointer to
2097 the "live" value. The called function must not modify this value. If it
2098 can be determined that the value won't be modified, it need not make a copy;
2099 otherwise a copy must be made. */
2100/* #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) */
2101
2102/* A C type for declaring a variable that is used as the first argument of
2103 `FUNCTION_ARG' and other related values. For some target machines, the type
2104 `int' suffices and can hold the number of bytes of argument so far.
2105
2106 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments
2107 that have been passed on the stack. The compiler has other variables to
2108 keep track of that. For target machines on which all arguments are passed
2109 on the stack, there is no need to store anything in `CUMULATIVE_ARGS';
2110 however, the data structure must exist and should not be empty, so use
2111 `int'.
2112
2113 For this platform, the value of CUMULATIVE_ARGS is the number of words
2114 of arguments that have been passed in registers so far. */
2115typedef int CUMULATIVE_ARGS;
2116
2117/* A C statement (sans semicolon) for initializing the variable CUM for the
2118 state at the beginning of the argument list. The variable has type
2119 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type
2120 of the function which will receive the args, or 0 if the args are to a
2121 compiler support library function. The value of INDIRECT is nonzero when
2122 processing an indirect call, for example a call through a function pointer.
2123 The value of INDIRECT is zero for a call to an explicitly named function, a
2124 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find
2125 arguments for the function being compiled.
2126
2127 When processing a call to a compiler support library function, LIBNAME
2128 identifies which one. It is a `symbol_ref' rtx which contains the name of
2129 the function, as a string. LIBNAME is 0 when an ordinary C function call is
2130 being processed. Thus, each time this macro is called, either LIBNAME or
2131 FNTYPE is nonzero, but never both of them at once. */
2132#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) (CUM) = 0
2133
2134/* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the
2135 arguments for the function being compiled. If this macro is undefined,
2136 `INIT_CUMULATIVE_ARGS' is used instead.
2137
2138 The value passed for LIBNAME is always 0, since library routines with
2139 special calling conventions are never compiled with GNU CC. The argument
2140 LIBNAME exists for symmetry with `INIT_CUMULATIVE_ARGS'. */
2141/* #define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) */
2142
2143/* A C statement (sans semicolon) to update the summarizer variable CUM to
2144 advance past an argument in the argument list. The values MODE, TYPE and
2145 NAMED describe that argument. Once this is done, the variable CUM is
2146 suitable for analyzing the *following* argument with `FUNCTION_ARG', etc.
2147
2148 This macro need not do anything if the argument in question was passed on
2149 the stack. The compiler knows how to track the amount of stack space used
2150 for arguments without any special help. */
2151#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
c6243b4c 2152 ((CUM) = xstormy16_function_arg_advance (CUM, MODE, TYPE, NAMED))
4b58290f
GK
2153
2154/* If defined, a C expression which determines whether, and in which direction,
2155 to pad out an argument with extra space. The value should be of type `enum
2156 direction': either `upward' to pad above the argument, `downward' to pad
2157 below, or `none' to inhibit padding.
2158
2159 The *amount* of padding is always just enough to reach the next multiple of
2160 `FUNCTION_ARG_BOUNDARY'; this macro does not control it.
2161
2162 This macro has a default definition which is right for most systems. For
2163 little-endian machines, the default is to pad upward. For big-endian
2164 machines, the default is to pad downward for an argument of constant size
2165 shorter than an `int', and upward otherwise. */
2166/* #define FUNCTION_ARG_PADDING(MODE, TYPE) */
2167
2168/* If defined, a C expression that gives the alignment boundary, in bits, of an
2169 argument with the specified mode and type. If it is not defined,
2170 `PARM_BOUNDARY' is used for all arguments. */
2171/* #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) */
2172
2173/* A C expression that is nonzero if REGNO is the number of a hard register in
2174 which function arguments are sometimes passed. This does *not* include
2175 implicit arguments such as the static chain and the structure-value address.
2176 On many machines, no registers can be used for this purpose since all
2177 function arguments are pushed on the stack. */
2178#define FUNCTION_ARG_REGNO_P(REGNO) \
2179 ((REGNO) >= FIRST_ARGUMENT_REGISTER \
2180 && (REGNO) < FIRST_ARGUMENT_REGISTER + NUM_ARGUMENT_REGISTERS)
2181
2182\f
2183/* How Scalar Function Values are Returned */
2184
2185/* The number of the hard register that is used to return a scalar value from a
2186 function call. */
2187#define RETURN_VALUE_REGNUM FIRST_ARGUMENT_REGISTER
2188
2189/* Define this macro if `-traditional' should not cause functions declared to
2190 return `float' to convert the value to `double'. */
2191/* #define TRADITIONAL_RETURN_FLOAT */
2192
2193/* A C expression to create an RTX representing the place where a function
2194 returns a value of data type VALTYPE. VALTYPE is a tree node representing a
2195 data type. Write `TYPE_MODE (VALTYPE)' to get the machine mode used to
2196 represent that type. On many machines, only the mode is relevant.
2197 (Actually, on most machines, scalar values are returned in the same place
2198 regardless of mode).
2199
2200 If `PROMOTE_FUNCTION_RETURN' is defined, you must apply the same promotion
2201 rules specified in `PROMOTE_MODE' if VALTYPE is a scalar type.
2202
2203 If the precise function being called is known, FUNC is a tree node
2204 (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This makes it
2205 possible to use a different value-returning convention for specific
2206 functions when all their calls are known.
2207
2208 `FUNCTION_VALUE' is not used for return vales with aggregate data types,
2209 because these are returned in another way. See `STRUCT_VALUE_REGNUM' and
2210 related macros, below. */
2211#define FUNCTION_VALUE(VALTYPE, FUNC) \
c6243b4c 2212 xstormy16_function_value (VALTYPE, FUNC)
4b58290f
GK
2213
2214
2215/* Define this macro if the target machine has "register windows" so that the
2216 register in which a function returns its value is not the same as the one in
2217 which the caller sees the value.
2218
2219 For such machines, `FUNCTION_VALUE' computes the register in which the
2220 caller will see the value. `FUNCTION_OUTGOING_VALUE' should be defined in a
2221 similar fashion to tell the function where to put the value.
2222
2223 If `FUNCTION_OUTGOING_VALUE' is not defined, `FUNCTION_VALUE' serves both
2224 purposes.
2225
2226 `FUNCTION_OUTGOING_VALUE' is not used for return vales with aggregate data
2227 types, because these are returned in another way. See `STRUCT_VALUE_REGNUM'
2228 and related macros, below. */
2229/* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) */
2230
2231/* A C expression to create an RTX representing the place where a library
2232 function returns a value of mode MODE.
2233
2234 Note that "library function" in this context means a compiler support
2235 routine, used to perform arithmetic, whose name is known specially by the
2236 compiler and was not mentioned in the C code being compiled.
2237
2238 The definition of `LIBRARY_VALUE' need not be concerned aggregate data
2239 types, because none of the library functions returns such types. */
2240#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, RETURN_VALUE_REGNUM)
2241
2242/* A C expression that is nonzero if REGNO is the number of a hard register in
2243 which the values of called function may come back.
2244
2245 A register whose use for returning values is limited to serving as the
2246 second of a pair (for a value of type `double', say) need not be recognized
2247 by this macro. So for most machines, this definition suffices:
2248
2249 #define FUNCTION_VALUE_REGNO_P(N) ((N) == RETURN)
2250
2251 If the machine has register windows, so that the caller and the called
2252 function use different registers for the return value, this macro should
2253 recognize only the caller's register numbers. */
2254#define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM)
2255
2256/* Define this macro if `untyped_call' and `untyped_return' need more space
2257 than is implied by `FUNCTION_VALUE_REGNO_P' for saving and restoring an
2258 arbitrary return value. */
2259/* #define APPLY_RESULT_SIZE */
2260
2261\f
2262/* How Large Values are Returned */
2263
2264/* A C expression which can inhibit the returning of certain function values in
2265 registers, based on the type of value. A nonzero value says to return the
2266 function value in memory, just as large structures are always returned.
2267 Here TYPE will be a C expression of type `tree', representing the data type
2268 of the value.
2269
2270 Note that values of mode `BLKmode' must be explicitly handled by this macro.
2271 Also, the option `-fpcc-struct-return' takes effect regardless of this
2272 macro. On most systems, it is possible to leave the macro undefined; this
2273 causes a default definition to be used, whose value is the constant 1 for
2274 `BLKmode' values, and 0 otherwise.
2275
2276 Do not use this macro to indicate that structures and unions should always
2277 be returned in memory. You should instead use `DEFAULT_PCC_STRUCT_RETURN'
2278 to indicate this. */
2279#define RETURN_IN_MEMORY(TYPE) \
2280 (int_size_in_bytes (TYPE) > UNITS_PER_WORD * NUM_ARGUMENT_REGISTERS)
2281
2282/* Define this macro to be 1 if all structure and union return values must be
2283 in memory. Since this results in slower code, this should be defined only
2284 if needed for compatibility with other compilers or with an ABI. If you
2285 define this macro to be 0, then the conventions used for structure and union
2286 return values are decided by the `RETURN_IN_MEMORY' macro.
2287
2288 If not defined, this defaults to the value 1. */
da6e254e 2289/* #define DEFAULT_PCC_STRUCT_RETURN 0 */
4b58290f
GK
2290
2291/* If the structure value address is passed in a register, then
2292 `STRUCT_VALUE_REGNUM' should be the number of that register. */
2293/* #define STRUCT_VALUE_REGNUM */
2294
2295/* If the structure value address is not passed in a register, define
2296 `STRUCT_VALUE' as an expression returning an RTX for the place where the
2297 address is passed. If it returns 0, the address is passed as an "invisible"
2298 first argument. */
2299#define STRUCT_VALUE 0
2300
2301/* On some architectures the place where the structure value address is found
2302 by the called function is not the same place that the caller put it. This
2303 can be due to register windows, or it could be because the function prologue
2304 moves it to a different place.
2305
2306 If the incoming location of the structure value address is in a register,
2307 define this macro as the register number. */
2308/* #define STRUCT_VALUE_INCOMING_REGNUM */
2309
2310/* If the incoming location is not a register, then you should define
2311 `STRUCT_VALUE_INCOMING' as an expression for an RTX for where the called
2312 function should find the value. If it should find the value on the stack,
2313 define this to create a `mem' which refers to the frame pointer. A
2314 definition of 0 means that the address is passed as an "invisible" first
2315 argument. */
2316/* #define STRUCT_VALUE_INCOMING */
2317
2318/* Define this macro if the usual system convention on the target machine for
2319 returning structures and unions is for the called function to return the
2320 address of a static variable containing the value.
2321
2322 Do not define this if the usual system convention is for the caller to pass
2323 an address to the subroutine.
2324
2325 This macro has effect in `-fpcc-struct-return' mode, but it does nothing
2326 when you use `-freg-struct-return' mode. */
2327/* #define PCC_STATIC_STRUCT_RETURN */
2328
2329\f
2330/* Caller-Saves Register Allocation */
2331
2332/* Define this macro if function calls on the target machine do not preserve
2333 any registers; in other words, if `CALL_USED_REGISTERS' has 1 for all
2334 registers. This macro enables `-fcaller-saves' by default. Eventually that
2335 option will be enabled by default on all machines and both the option and
2336 this macro will be eliminated. */
2337/* #define DEFAULT_CALLER_SAVES */
2338
2339/* A C expression to determine whether it is worthwhile to consider placing a
2340 pseudo-register in a call-clobbered hard register and saving and restoring
2341 it around each function call. The expression should be 1 when this is worth
2342 doing, and 0 otherwise.
2343
2344 If you don't define this macro, a default is used which is good on most
2345 machines: `4 * CALLS < REFS'. */
2346/* #define CALLER_SAVE_PROFITABLE(REFS, CALLS) */
2347
2348\f
2349/* Function Entry and Exit */
2350
2351/* Define this macro as a C expression that is nonzero if the return
2352 instruction or the function epilogue ignores the value of the stack pointer;
2353 in other words, if it is safe to delete an instruction to adjust the stack
2354 pointer before a return from the function.
2355
2356 Note that this macro's value is relevant only for functions for which frame
2357 pointers are maintained. It is never safe to delete a final stack
2358 adjustment in a function that has no frame pointer, and the compiler knows
2359 this regardless of `EXIT_IGNORE_STACK'. */
2360/* #define EXIT_IGNORE_STACK */
2361
2362/* Define this macro as a C expression that is nonzero for registers
2363 are used by the epilogue or the `return' pattern. The stack and
2364 frame pointer registers are already be assumed to be used as
2365 needed. */
2366#define EPILOGUE_USES(REGNO) \
c6243b4c 2367 xstormy16_epilogue_uses (REGNO)
4b58290f
GK
2368
2369/* Define this macro if the function epilogue contains delay slots to which
2370 instructions from the rest of the function can be "moved". The definition
2371 should be a C expression whose value is an integer representing the number
2372 of delay slots there. */
2373/* #define DELAY_SLOTS_FOR_EPILOGUE */
2374
2375/* A C expression that returns 1 if INSN can be placed in delay slot number N
2376 of the epilogue.
2377
2378 The argument N is an integer which identifies the delay slot now being
2379 considered (since different slots may have different rules of eligibility).
2380 It is never negative and is always less than the number of epilogue delay
2381 slots (what `DELAY_SLOTS_FOR_EPILOGUE' returns). If you reject a particular
2382 insn for a given delay slot, in principle, it may be reconsidered for a
2383 subsequent delay slot. Also, other insns may (at least in principle) be
2384 considered for the so far unfilled delay slot.
2385
2386 The insns accepted to fill the epilogue delay slots are put in an
2387 RTL list made with `insn_list' objects, stored in the variable
2388 `current_function_epilogue_delay_list'. The insn for the first
2389 delay slot comes first in the list. Your definition of the macro
2390 `FUNCTION_EPILOGUE' should fill the delay slots by outputting the
2391 insns in this list, usually by calling `final_scan_insn'.
2392
2393 You need not define this macro if you did not define
2394 `DELAY_SLOTS_FOR_EPILOGUE'. */
2395/* #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN, N) */
2396
2397/* A C compound statement that outputs the assembler code for a thunk function,
2398 used to implement C++ virtual function calls with multiple inheritance. The
2399 thunk acts as a wrapper around a virtual function, adjusting the implicit
2400 object parameter before handing control off to the real function.
2401
2402 First, emit code to add the integer DELTA to the location that contains the
2403 incoming first argument. Assume that this argument contains a pointer, and
2404 is the one used to pass the `this' pointer in C++. This is the incoming
2405 argument *before* the function prologue, e.g. `%o0' on a sparc. The
2406 addition must preserve the values of all other incoming arguments.
2407
2408 After the addition, emit code to jump to FUNCTION, which is a
2409 `FUNCTION_DECL'. This is a direct pure jump, not a call, and does not touch
2410 the return address. Hence returning from FUNCTION will return to whoever
2411 called the current `thunk'.
2412
41441dc7
NB
2413 The effect must be as if @var{function} had been called directly
2414 with the adjusted first argument. This macro is responsible for
2415 emitting all of the code for a thunk function;
2416 TARGET_ASM_FUNCTION_PROLOGUE and TARGET_ASM_FUNCTION_EPILOGUE are
2417 not invoked.
4b58290f
GK
2418
2419 The THUNK_FNDECL is redundant. (DELTA and FUNCTION have already been
2420 extracted from it.) It might possibly be useful on some targets, but
2421 probably not.
2422
2423 If you do not define this macro, the target-independent code in the C++
2424 frontend will generate a less efficient heavyweight thunk that calls
2425 FUNCTION instead of jumping to it. The generic approach does not support
2426 varargs. */
2427#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
c6243b4c 2428 xstormy16_asm_output_mi_thunk (FILE, THUNK_FNDECL, DELTA, FUNCTION)
4b58290f
GK
2429
2430\f
2431/* Generating Code for Profiling. */
2432
2433/* A C statement or compound statement to output to FILE some assembler code to
2434 call the profiling subroutine `mcount'. Before calling, the assembler code
2435 must load the address of a counter variable into a register where `mcount'
2436 expects to find the address. The name of this variable is `LP' followed by
2437 the number LABELNO, so you would generate the name using `LP%d' in a
2438 `fprintf'.
2439
2440 The details of how the address should be passed to `mcount' are determined
2441 by your operating system environment, not by GNU CC. To figure them out,
2442 compile a small program for profiling using the system's installed C
2443 compiler and look at the assembler code that results.
2444
2445 This declaration must be present, but it can be an abort if profiling is
2446 not implemented. */
2447
2448#define FUNCTION_PROFILER(FILE, LABELNO) abort ()
2449
2450/* Define this macro if the code for function profiling should come before the
2451 function prologue. Normally, the profiling code comes after. */
2452/* #define PROFILE_BEFORE_PROLOGUE */
2453
4b58290f
GK
2454\f
2455/* If the target has particular reasons why a function cannot be inlined,
2456 it may define the TARGET_CANNOT_INLINE_P. This macro takes one argument,
2457 the DECL describing the function. The function should NULL if the function
2458 *can* be inlined. Otherwise it should return a pointer to a string containing
2459 a message describing why the function could not be inlined. The message will
2460 displayed if the '-Winline' command line switch has been given. If the message
2461 contains a '%s' sequence, this will be replaced by the name of the function. */
c6243b4c 2462/* #define TARGET_CANNOT_INLINE_P(FN_DECL) xstormy16_cannot_inline_p (FN_DECL) */
4b58290f
GK
2463\f
2464/* Implementing the Varargs Macros. */
2465
2466/* If defined, is a C expression that produces the machine-specific code for a
2467 call to `__builtin_saveregs'. This code will be moved to the very beginning
2468 of the function, before any parameter access are made. The return value of
2469 this function should be an RTX that contains the value to use as the return
2470 of `__builtin_saveregs'.
2471
2472 If this macro is not defined, the compiler will output an ordinary call to
2473 the library function `__builtin_saveregs'. */
2474/* #define EXPAND_BUILTIN_SAVEREGS() */
2475
2476/* This macro offers an alternative to using `__builtin_saveregs' and defining
2477 the macro `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register
2478 arguments into the stack so that all the arguments appear to have been
2479 passed consecutively on the stack. Once this is done, you can use the
2480 standard implementation of varargs that works for machines that pass all
2481 their arguments on the stack.
2482
2483 The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure, containing
2484 the values that obtain after processing of the named arguments. The
2485 arguments MODE and TYPE describe the last named argument--its machine mode
2486 and its data type as a tree node.
2487
2488 The macro implementation should do two things: first, push onto the stack
2489 all the argument registers *not* used for the named arguments, and second,
2490 store the size of the data thus pushed into the `int'-valued variable whose
2491 name is supplied as the argument PRETEND_ARGS_SIZE. The value that you
2492 store here will serve as additional offset for setting up the stack frame.
2493
2494 Because you must generate code to push the anonymous arguments at compile
2495 time without knowing their data types, `SETUP_INCOMING_VARARGS' is only
2496 useful on machines that have just a single category of argument register and
2497 use it uniformly for all data types.
2498
2499 If the argument SECOND_TIME is nonzero, it means that the arguments of the
2500 function are being analyzed for the second time. This happens for an inline
2501 function, which is not actually compiled until the end of the source file.
2502 The macro `SETUP_INCOMING_VARARGS' should not generate any instructions in
2503 this case. */
2504#define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_ARGS_SIZE, SECOND_TIME) \
2505 if (! SECOND_TIME) \
c6243b4c 2506 xstormy16_setup_incoming_varargs (ARGS_SO_FAR, MODE, TYPE, & PRETEND_ARGS_SIZE)
4b58290f
GK
2507
2508/* Define this macro if the location where a function argument is passed
2509 depends on whether or not it is a named argument.
2510
2511 This macro controls how the NAMED argument to `FUNCTION_ARG' is set for
2512 varargs and stdarg functions. With this macro defined, the NAMED argument
2513 is always true for named arguments, and false for unnamed arguments. If
2514 this is not defined, but `SETUP_INCOMING_VARARGS' is defined, then all
2515 arguments are treated as named. Otherwise, all named arguments except the
2516 last are treated as named. */
2517/* #define STRICT_ARGUMENT_NAMING 1 */
2518
2519/* Build up the stdarg/varargs va_list type tree, assinging it to NODE. If not
2520 defined, it is assumed that va_list is a void * pointer. */
2521#define BUILD_VA_LIST_TYPE(NODE) \
c6243b4c 2522 ((NODE) = xstormy16_build_va_list ())
4b58290f
GK
2523
2524/* Implement the stdarg/varargs va_start macro. STDARG_P is non-zero if this
2525 is stdarg.h instead of varargs.h. VALIST is the tree of the va_list
2526 variable to initialize. NEXTARG is the machine independent notion of the
2527 'next' argument after the variable arguments. If not defined, a standard
2528 implementation will be defined that works for arguments passed on the stack. */
2529#define EXPAND_BUILTIN_VA_START(STDARG_P, VALIST, NEXTARG) \
c6243b4c 2530 xstormy16_expand_builtin_va_start (STDARG_P, VALIST, NEXTARG)
4b58290f
GK
2531
2532/* Implement the stdarg/varargs va_arg macro. VALIST is the variable of type
2533 va_list as a tree, TYPE is the type passed to va_arg. */
2534#define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \
c6243b4c 2535 xstormy16_expand_builtin_va_arg (VALIST, TYPE)
4b58290f
GK
2536
2537/* Implement the stdarg/varargs va_end macro. VALIST is the variable of type
2538 va_list as a tree. */
2539/* #define EXPAND_BUILTIN_VA_END(VALIST) */
2540
2541\f
2542/* Trampolines for Nested Functions. */
2543
2544/* A C statement to output, on the stream FILE, assembler code for a block of
2545 data that contains the constant parts of a trampoline. This code should not
2546 include a label--the label is taken care of automatically. */
2547/* #define TRAMPOLINE_TEMPLATE(FILE) */
2548
2549/* The name of a subroutine to switch to the section in which the trampoline
2550 template is to be placed. The default is a value of `readonly_data_section',
2551 which places the trampoline in the section containing read-only data. */
2552/* #define TRAMPOLINE_SECTION */
2553
2554/* A C expression for the size in bytes of the trampoline, as an integer. */
2555#define TRAMPOLINE_SIZE 8
2556
2557/* Alignment required for trampolines, in bits.
2558
2559 If you don't define this macro, the value of `BIGGEST_ALIGNMENT' is used for
2560 aligning trampolines. */
2561#define TRAMPOLINE_ALIGNMENT 16
2562
2563/* A C statement to initialize the variable parts of a trampoline. ADDR is an
2564 RTX for the address of the trampoline; FNADDR is an RTX for the address of
2565 the nested function; STATIC_CHAIN is an RTX for the static chain value that
2566 should be passed to the function when it is called. */
2567#define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
c6243b4c 2568 xstormy16_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
4b58290f
GK
2569
2570/* A C expression to allocate run-time space for a trampoline. The expression
2571 value should be an RTX representing a memory reference to the space for the
2572 trampoline.
2573
2574 If this macro is not defined, by default the trampoline is allocated as a
2575 stack slot. This default is right for most machines. The exceptions are
2576 machines where it is impossible to execute instructions in the stack area.
2577 On such machines, you may have to implement a separate stack, using this
41441dc7
NB
2578 macro in conjunction with `TARGET_ASM_FUNCTION_PROLOGUE' and
2579 `TARGET_ASM_FUNCTION_EPILOGUE'.
4b58290f
GK
2580
2581 FP points to a data structure, a `struct function', which describes the
2582 compilation status of the immediate containing function of the function
2583 which the trampoline is for. Normally (when `ALLOCATE_TRAMPOLINE' is not
2584 defined), the stack slot for the trampoline is in the stack frame of this
2585 containing function. Other allocation strategies probably must do something
2586 analogous with this information. */
2587/* #define ALLOCATE_TRAMPOLINE(FP) */
2588
2589/* Implementing trampolines is difficult on many machines because they have
2590 separate instruction and data caches. Writing into a stack location fails
2591 to clear the memory in the instruction cache, so when the program jumps to
2592 that location, it executes the old contents.
2593
2594 Here are two possible solutions. One is to clear the relevant parts of the
2595 instruction cache whenever a trampoline is set up. The other is to make all
2596 trampolines identical, by having them jump to a standard subroutine. The
2597 former technique makes trampoline execution faster; the latter makes
2598 initialization faster.
2599
2600 To clear the instruction cache when a trampoline is initialized, define the
2601 following macros which describe the shape of the cache. */
2602
2603/* The total size in bytes of the cache. */
2604/* #define INSN_CACHE_SIZE */
2605
2606/* The length in bytes of each cache line. The cache is divided into cache
2607 lines which are disjoint slots, each holding a contiguous chunk of data
2608 fetched from memory. Each time data is brought into the cache, an entire
2609 line is read at once. The data loaded into a cache line is always aligned
2610 on a boundary equal to the line size. */
2611/* #define INSN_CACHE_LINE_WIDTH */
2612
2613/* The number of alternative cache lines that can hold any particular memory
2614 location. */
2615/* #define INSN_CACHE_DEPTH */
2616
2617/* Alternatively, if the machine has system calls or instructions to clear the
2618 instruction cache directly, you can define the following macro. */
2619
2620/* If defined, expands to a C expression clearing the *instruction cache* in
2621 the specified interval. If it is not defined, and the macro INSN_CACHE_SIZE
2622 is defined, some generic code is generated to clear the cache. The
2623 definition of this macro would typically be a series of `asm' statements.
2624 Both BEG and END are both pointer expressions. */
2625/* #define CLEAR_INSN_CACHE (BEG, END) */
2626
2627/* To use a standard subroutine, define the following macro. In addition, you
2628 must make sure that the instructions in a trampoline fill an entire cache
2629 line with identical instructions, or else ensure that the beginning of the
2630 trampoline code is always aligned at the same point in its cache line. Look
2631 in `m68k.h' as a guide. */
2632
2633/* Define this macro if trampolines need a special subroutine to do their work.
2634 The macro should expand to a series of `asm' statements which will be
2635 compiled with GNU CC. They go in a library function named
2636 `__transfer_from_trampoline'.
2637
2638 If you need to avoid executing the ordinary prologue code of a compiled C
2639 function when you jump to the subroutine, you can do so by placing a special
2640 label of your own in the assembler code. Use one `asm' statement to
2641 generate an assembler label, and another to make the label global. Then
2642 trampolines can use that label to jump directly to your special assembler
2643 code. */
2644/* #define TRANSFER_FROM_TRAMPOLINE */
2645
2646\f
2647/* Implicit Calls to Library Routines */
2648
2649/* A C string constant giving the name of the function to call for
2650 multiplication of one signed full-word by another. If you do not define
2651 this macro, the default name is used, which is `__mulsi3', a function
2652 defined in `libgcc.a'. */
2653/* #define MULSI3_LIBCALL */
2654
2655/* A C string constant giving the name of the function to call for division of
2656 one signed full-word by another. If you do not define this macro, the
2657 default name is used, which is `__divsi3', a function defined in `libgcc.a'. */
2658/* #define DIVSI3_LIBCALL */
2659
2660/* A C string constant giving the name of the function to call for division of
2661 one unsigned full-word by another. If you do not define this macro, the
2662 default name is used, which is `__udivsi3', a function defined in
2663 `libgcc.a'. */
2664/* #define UDIVSI3_LIBCALL */
2665
2666/* A C string constant giving the name of the function to call for the
2667 remainder in division of one signed full-word by another. If you do not
2668 define this macro, the default name is used, which is `__modsi3', a function
2669 defined in `libgcc.a'. */
2670/* #define MODSI3_LIBCALL */
2671
2672/* A C string constant giving the name of the function to call for the
2673 remainder in division of one unsigned full-word by another. If you do not
2674 define this macro, the default name is used, which is `__umodsi3', a
2675 function defined in `libgcc.a'. */
2676/* #define UMODSI3_LIBCALL */
2677
2678/* A C string constant giving the name of the function to call for
2679 multiplication of one signed double-word by another. If you do not define
2680 this macro, the default name is used, which is `__muldi3', a function
2681 defined in `libgcc.a'. */
2682/* #define MULDI3_LIBCALL */
2683
2684/* A C string constant giving the name of the function to call for division of
2685 one signed double-word by another. If you do not define this macro, the
2686 default name is used, which is `__divdi3', a function defined in `libgcc.a'. */
2687/* #define DIVDI3_LIBCALL */
2688
2689/* A C string constant giving the name of the function to call for division of
2690 one unsigned full-word by another. If you do not define this macro, the
2691 default name is used, which is `__udivdi3', a function defined in
2692 `libgcc.a'. */
2693/* #define UDIVDI3_LIBCALL */
2694
2695/* A C string constant giving the name of the function to call for the
2696 remainder in division of one signed double-word by another. If you do not
2697 define this macro, the default name is used, which is `__moddi3', a function
2698 defined in `libgcc.a'. */
2699/* #define MODDI3_LIBCALL */
2700
2701/* A C string constant giving the name of the function to call for the
2702 remainder in division of one unsigned full-word by another. If you do not
2703 define this macro, the default name is used, which is `__umoddi3', a
2704 function defined in `libgcc.a'. */
2705/* #define UMODDI3_LIBCALL */
2706
2707/* Define this macro as a C statement that declares additional library routines
2708 renames existing ones. `init_optabs' calls this macro after initializing all
2709 the normal library routines. */
2710/* #define INIT_TARGET_OPTABS */
2711
2712/* The value of `EDOM' on the target machine, as a C integer constant
2713 expression. If you don't define this macro, GNU CC does not attempt to
2714 deposit the value of `EDOM' into `errno' directly. Look in
2715 `/usr/include/errno.h' to find the value of `EDOM' on your system.
2716
2717 If you do not define `TARGET_EDOM', then compiled code reports domain errors
2718 by calling the library function and letting it report the error. If
2719 mathematical functions on your system use `matherr' when there is an error,
2720 then you should leave `TARGET_EDOM' undefined so that `matherr' is used
2721 normally. */
2722/* #define TARGET_EDOM */
2723
2724/* Define this macro as a C expression to create an rtl expression that refers
2725 to the global "variable" `errno'. (On certain systems, `errno' may not
2726 actually be a variable.) If you don't define this macro, a reasonable
2727 default is used. */
2728/* #define GEN_ERRNO_RTX */
2729
2730/* Define this macro if GNU CC should generate calls to the System V (and ANSI
2731 C) library functions `memcpy' and `memset' rather than the BSD functions
2732 `bcopy' and `bzero'.
2733
2734 Defined in svr4.h. */
2735#define TARGET_MEM_FUNCTIONS
2736
2737/* Define this macro if only `float' arguments cannot be passed to library
2738 routines (so they must be converted to `double'). This macro affects both
2739 how library calls are generated and how the library routines in `libgcc1.c'
2740 accept their arguments. It is useful on machines where floating and fixed
2741 point arguments are passed differently, such as the i860. */
2742/* #define LIBGCC_NEEDS_DOUBLE */
2743
2744/* Define this macro to override the type used by the library routines to pick
2745 up arguments of type `float'. (By default, they use a union of `float' and
2746 `int'.)
2747
2748 The obvious choice would be `float'--but that won't work with traditional C
2749 compilers that expect all arguments declared as `float' to arrive as
2750 `double'. To avoid this conversion, the library routines ask for the value
2751 as some other type and then treat it as a `float'.
2752
2753 On some systems, no other type will work for this. For these systems, you
2754 must use `LIBGCC_NEEDS_DOUBLE' instead, to force conversion of the values
2755 `double' before they are passed. */
2756/* #define FLOAT_ARG_TYPE */
2757
2758/* Define this macro to override the way library routines redesignate a `float'
2759 argument as a `float' instead of the type it was passed as. The default is
2760 an expression which takes the `float' field of the union. */
2761/* #define FLOATIFY(PASSED_VALUE) */
2762
2763/* Define this macro to override the type used by the library routines to
2764 return values that ought to have type `float'. (By default, they use
2765 `int'.)
2766
2767 The obvious choice would be `float'--but that won't work with traditional C
2768 compilers gratuitously convert values declared as `float' into `double'. */
2769/* #define FLOAT_VALUE_TYPE */
2770
2771/* Define this macro to override the way the value of a `float'-returning
2772 library routine should be packaged in order to return it. These functions
2773 are actually declared to return type `FLOAT_VALUE_TYPE' (normally `int').
2774
2775 These values can't be returned as type `float' because traditional C
2776 compilers would gratuitously convert the value to a `double'.
2777
2778 A local variable named `intify' is always available when the macro `INTIFY'
2779 is used. It is a union of a `float' field named `f' and a field named `i'
2780 whose type is `FLOAT_VALUE_TYPE' or `int'.
2781
2782 If you don't define this macro, the default definition works by copying the
2783 value through that union. */
2784/* #define INTIFY(FLOAT_VALUE) */
2785
2786/* Define this macro as the name of the data type corresponding to `SImode' in
2787 the system's own C compiler.
2788
2789 You need not define this macro if that type is `long int', as it usually is. */
2790/* #define nongcc_SI_type */
2791
2792/* Define this macro as the name of the data type corresponding to the
2793 word_mode in the system's own C compiler.
2794
2795 You need not define this macro if that type is `long int', as it usually is. */
2796/* #define nongcc_word_type */
2797
2798/* Define these macros to supply explicit C statements to carry out various
2799 arithmetic operations on types `float' and `double' in the library routines
2800 in `libgcc1.c'. See that file for a full list of these macros and their
2801 arguments.
2802
2803 On most machines, you don't need to define any of these macros, because the
2804 C compiler that comes with the system takes care of doing them. */
2805/* #define perform_... */
2806
2807/* Define this macro to generate code for Objective C message sending using the
2808 calling convention of the NeXT system. This calling convention involves
2809 passing the object, the selector and the method arguments all at once to the
2810 method-lookup library function.
2811
2812 The default calling convention passes just the object and the selector to
2813 the lookup function, which returns a pointer to the method. */
2814/* #define NEXT_OBJC_RUNTIME */
2815
2816\f
2817/* Addressing Modes */
2818
2819/* Define this macro if the machine supports post-increment addressing. */
2820#define HAVE_POST_INCREMENT 1
2821
2822/* Similar for other kinds of addressing. */
2823/* #define HAVE_PRE_INCREMENT 1 */
2824/* #define HAVE_POST_DECREMENT 1 */
2825#define HAVE_PRE_DECREMENT 1
2826
2827/* A C expression that is 1 if the RTX X is a constant which is a valid
2828 address. On most machines, this can be defined as `CONSTANT_P (X)', but a
2829 few machines are more restrictive in which constant addresses are supported.
2830
2831 `CONSTANT_P' accepts integer-values expressions whose values are not
2832 explicitly known, such as `symbol_ref', `label_ref', and `high' expressions
2833 and `const' arithmetic expressions, in addition to `const_int' and
2834 `const_double' expressions. */
2835#define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
2836
2837/* A number, the maximum number of registers that can appear in a valid memory
2838 address. Note that it is up to you to specify a value equal to the maximum
2839 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */
2840#define MAX_REGS_PER_ADDRESS 1
2841
2842/* A C compound statement with a conditional `goto LABEL;' executed if X (an
2843 RTX) is a legitimate memory address on the target machine for a memory
2844 operand of mode MODE.
2845
2846 It usually pays to define several simpler macros to serve as subroutines for
2847 this one. Otherwise it may be too complicated to understand.
2848
2849 This macro must exist in two variants: a strict variant and a non-strict
2850 one. The strict variant is used in the reload pass. It must be defined so
2851 that any pseudo-register that has not been allocated a hard register is
2852 considered a memory reference. In contexts where some kind of register is
2853 required, a pseudo-register with no hard register must be rejected.
2854
2855 The non-strict variant is used in other passes. It must be defined to
2856 accept all pseudo-registers in every context where some kind of register is
2857 required.
2858
2859 Compiler source files that want to use the strict variant of this macro
2860 define the macro `REG_OK_STRICT'. You should use an `#ifdef REG_OK_STRICT'
2861 conditional to define the strict variant in that case and the non-strict
2862 variant otherwise.
2863
2864 Subroutines to check for acceptable registers for various purposes (one for
2865 base registers, one for index registers, and so on) are typically among the
2866 subroutines used to define `GO_IF_LEGITIMATE_ADDRESS'. Then only these
2867 subroutine macros need have two variants; the higher levels of macros may be
2868 the same whether strict or not.
2869
2870 Normally, constant addresses which are the sum of a `symbol_ref' and an
2871 integer are stored inside a `const' RTX to mark them as constant.
2872 Therefore, there is no need to recognize such sums specifically as
2873 legitimate addresses. Normally you would simply recognize any `const' as
2874 legitimate.
2875
2876 Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle constant sums that
2877 are not marked with `const'. It assumes that a naked `plus' indicates
2878 indexing. If so, then you *must* reject such naked constant sums as
2879 illegitimate addresses, so that none of them will be given to
2880 `PRINT_OPERAND_ADDRESS'.
2881
2882 On some machines, whether a symbolic address is legitimate depends on the
2883 section that the address refers to. On these machines, define the macro
2884 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and
2885 then check for it here. When you see a `const', you will have to look
2886 inside it to find the `symbol_ref' in order to determine the section.
2887
2888 The best way to modify the name string is by adding text to the beginning,
2889 with suitable punctuation to prevent any ambiguity. Allocate the new name
2890 in `saveable_obstack'. You will have to modify `ASM_OUTPUT_LABELREF' to
2891 remove and decode the added text and output the name accordingly, and define
2892 `STRIP_NAME_ENCODING' to access the original name string.
2893
2894 You can check the information stored here into the `symbol_ref' in the
2895 definitions of the macros `GO_IF_LEGITIMATE_ADDRESS' and
2896 `PRINT_OPERAND_ADDRESS'. */
2897#ifdef REG_OK_STRICT
2898#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2899do { \
c6243b4c 2900 if (xstormy16_legitimate_address_p (MODE, X, 1)) \
4b58290f
GK
2901 goto LABEL; \
2902} while (0)
2903#else
2904#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2905do { \
c6243b4c 2906 if (xstormy16_legitimate_address_p (MODE, X, 0)) \
4b58290f
GK
2907 goto LABEL; \
2908} while (0)
2909#endif
2910/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
2911 use as a base register. For hard registers, it should always accept those
2912 which the hardware permits and reject the others. Whether the macro accepts
2913 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as
2914 described above. This usually requires two variant definitions, of which
2915 `REG_OK_STRICT' controls the one actually used. */
2916#ifdef REG_OK_STRICT
2917#define REG_OK_FOR_BASE_P(X) \
2918 (REGNO_OK_FOR_BASE_P (REGNO (X)) && (REGNO (X) < FIRST_PSEUDO_REGISTER))
2919#else
2920#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
2921#endif
2922
2923/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
2924 use as an index register.
2925
2926 The difference between an index register and a base register is that the
2927 index register may be scaled. If an address involves the sum of two
2928 registers, neither one of them scaled, then either one may be labeled the
2929 "base" and the other the "index"; but whichever labeling is used must fit
2930 the machine's constraints of which registers may serve in each capacity.
2931 The compiler will try both labelings, looking for one that is valid, and
2932 will reload one or both registers only if neither labeling works. */
2933#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
2934
2935/* A C compound statement that attempts to replace X with a valid memory
2936 address for an operand of mode MODE. WIN will be a C statement label
2937 elsewhere in the code; the macro definition may use
2938
2939 GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN);
2940
2941 to avoid further processing if the address has become legitimate.
2942
2943 X will always be the result of a call to `break_out_memory_refs', and OLDX
2944 will be the operand that was given to that function to produce X.
2945
2946 The code generated by this macro should not alter the substructure of X. If
2947 it transforms X into a more legitimate form, it should assign X (which will
2948 always be a C variable) a new value.
2949
2950 It is not necessary for this macro to come up with a legitimate address.
2951 The compiler has standard ways of doing so in all cases. In fact, it is
2952 safe for this macro to do nothing. But often a machine-dependent strategy
2953 can generate better code. */
2954#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)
2955
2956/* A C statement or compound statement with a conditional `goto LABEL;'
2957 executed if memory address X (an RTX) can have different meanings depending
2958 on the machine mode of the memory reference it is used for or if the address
2959 is valid for some modes but not others.
2960
2961 Autoincrement and autodecrement addresses typically have mode-dependent
2962 effects because the amount of the increment or decrement is the size of the
2963 operand being addressed. Some machines have other mode-dependent addresses.
2964 Many RISC machines have no mode-dependent addresses.
2965
2966 You may assume that ADDR is a valid address for the machine.
2967
2968 On this chip, this is true if the address is valid with an offset
2969 of 0 but not of 6, because in that case it cannot be used as an
2970 address for DImode or DFmode, or if the address is a post-increment
2971 or pre-decrement address.
2972*/
2973#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
c6243b4c 2974 if (xstormy16_mode_dependent_address_p (ADDR)) \
4b58290f
GK
2975 goto LABEL
2976
2977/* A C expression that is nonzero if X is a legitimate constant for an
2978 immediate operand on the target machine. You can assume that X satisfies
2979 `CONSTANT_P', so you need not check this. In fact, `1' is a suitable
2980 definition for this macro on machines where anything `CONSTANT_P' is valid. */
2981#define LEGITIMATE_CONSTANT_P(X) 1
2982
2983\f
2984/* Condition Code Status */
2985
2986/* C code for a data type which is used for declaring the `mdep' component of
2987 `cc_status'. It defaults to `int'.
2988
2989 This macro is not used on machines that do not use `cc0'. */
2990/* #define CC_STATUS_MDEP */
2991
2992/* A C expression to initialize the `mdep' field to "empty". The default
2993 definition does nothing, since most machines don't use the field anyway. If
2994 you want to use the field, you should probably define this macro to
2995 initialize it.
2996
2997 This macro is not used on machines that do not use `cc0'. */
2998/* #define CC_STATUS_MDEP_INIT */
2999
3000/* A C compound statement to set the components of `cc_status' appropriately
3001 for an insn INSN whose body is EXP. It is this macro's responsibility to
3002 recognize insns that set the condition code as a byproduct of other activity
3003 as well as those that explicitly set `(cc0)'.
3004
3005 This macro is not used on machines that do not use `cc0'.
3006
3007 If there are insns that do not set the condition code but do alter other
3008 machine registers, this macro must check to see whether they invalidate the
3009 expressions that the condition code is recorded as reflecting. For example,
3010 on the 68000, insns that store in address registers do not set the condition
3011 code, which means that usually `NOTICE_UPDATE_CC' can leave `cc_status'
3012 unaltered for such insns. But suppose that the previous insn set the
3013 condition code based on location `a4@(102)' and the current insn stores a
3014 new value in `a4'. Although the condition code is not changed by this, it
3015 will no longer be true that it reflects the contents of `a4@(102)'.
3016 Therefore, `NOTICE_UPDATE_CC' must alter `cc_status' in this case to say
3017 that nothing is known about the condition code value.
3018
3019 The definition of `NOTICE_UPDATE_CC' must be prepared to deal with the
3020 results of peephole optimization: insns whose patterns are `parallel' RTXs
3021 containing various `reg', `mem' or constants which are just the operands.
3022 The RTL structure of these insns is not sufficient to indicate what the
3023 insns actually do. What `NOTICE_UPDATE_CC' should do when it sees one is
3024 just to run `CC_STATUS_INIT'.
3025
3026 A possible definition of `NOTICE_UPDATE_CC' is to call a function that looks
3027 at an attribute named, for example, `cc'. This avoids having detailed
3028 information about patterns in two places, the `md' file and in
3029 `NOTICE_UPDATE_CC'. */
3030/* #define NOTICE_UPDATE_CC(EXP, INSN) */
3031
3032/* A list of names to be used for additional modes for condition code values in
3033 registers. These names are added to `enum machine_mode' and all have class
3034 `MODE_CC'. By convention, they should start with `CC' and end with `mode'.
3035
3036 You should only define this macro if your machine does not use `cc0' and
3037 only if additional modes are required. */
3038/* #define EXTRA_CC_MODES */
3039
3040/* Returns a mode from class `MODE_CC' to be used when comparison operation
3041 code OP is applied to rtx X and Y. For example, on the Sparc,
3042 `SELECT_CC_MODE' is defined as (see *note Jump Patterns::. for a
3043 description of the reason for this definition)
3044
3045 #define SELECT_CC_MODE(OP,X,Y) \
3046 (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
3047 ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \
3048 : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \
3049 || GET_CODE (X) == NEG) \
3050 ? CC_NOOVmode : CCmode))
3051
3052 You need not define this macro if `EXTRA_CC_MODES' is not defined. */
3053/* #define SELECT_CC_MODE(OP, X, Y) */
3054
3055/* One some machines not all possible comparisons are defined, but you can
3056 convert an invalid comparison into a valid one. For example, the Alpha does
3057 not have a `GT' comparison, but you can use an `LT' comparison instead and
3058 swap the order of the operands.
3059
3060 On such machines, define this macro to be a C statement to do any required
3061 conversions. CODE is the initial comparison code and OP0 and OP1 are the
3062 left and right operands of the comparison, respectively. You should modify
3063 CODE, OP0, and OP1 as required.
3064
3065 GNU CC will not assume that the comparison resulting from this macro is
3066 valid but will see if the resulting insn matches a pattern in the `md' file.
3067
3068 You need not define this macro if it would never change the comparison code
3069 or operands. */
3070/* #define CANONICALIZE_COMPARISON(CODE, OP0, OP1) */
3071
3072/* A C expression whose value is one if it is always safe to reverse a
3073 comparison whose mode is MODE. If `SELECT_CC_MODE' can ever return MODE for
3074 a floating-point inequality comparison, then `REVERSIBLE_CC_MODE (MODE)'
3075 must be zero.
3076
3077 You need not define this macro if it would always returns zero or if the
3078 floating-point format is anything other than `IEEE_FLOAT_FORMAT'. For
3079 example, here is the definition used on the Sparc, where floating-point
3080 inequality comparisons are always given `CCFPEmode':
3081
3082 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) */
3083/* #define REVERSIBLE_CC_MODE(MODE) */
3084
3085\f
3086/* Describing Relative Costs of Operations */
3087
3088/* A part of a C `switch' statement that describes the relative costs of
3089 constant RTL expressions. It must contain `case' labels for expression
3090 codes `const_int', `const', `symbol_ref', `label_ref' and `const_double'.
3091 Each case must ultimately reach a `return' statement to return the relative
3092 cost of the use of that kind of constant value in an expression. The cost
3093 may depend on the precise value of the constant, which is available for
3094 examination in X, and the rtx code of the expression in which it is
3095 contained, found in OUTER_CODE.
3096
3097 CODE is the expression code--redundant, since it can be obtained with
3098 `GET_CODE (X)'. */
3fdb2f71
GK
3099#define CONST_COSTS(X, CODE, OUTER_CODE) \
3100 case CONST_INT: \
3101 if (INTVAL (X) < 16 && INTVAL (X) >= 0) \
3102 return COSTS_N_INSNS (1)/2; \
3103 if (INTVAL (X) < 256 && INTVAL (X) >= 0) \
3104 return COSTS_N_INSNS (1); \
3105 case CONST_DOUBLE: \
3106 case CONST: \
3107 case SYMBOL_REF: \
3108 case LABEL_REF: \
3109 return COSTS_N_INSNS(2);
4b58290f
GK
3110
3111/* Like `CONST_COSTS' but applies to nonconstant RTL expressions. This can be
3112 used, for example, to indicate how costly a multiply instruction is. In
3113 writing this macro, you can use the construct `COSTS_N_INSNS (N)' to specify
3114 a cost equal to N fast instructions. OUTER_CODE is the code of the
3115 expression in which X is contained.
3116
3117 This macro is optional; do not define it if the default cost assumptions are
3118 adequate for the target machine. */
3fdb2f71
GK
3119#define RTX_COSTS(X, CODE, OUTER_CODE) \
3120 case MULT: \
3121 return COSTS_N_INSNS (35 + 6); \
3122 case DIV: \
3123 return COSTS_N_INSNS (51 - 6);
4b58290f
GK
3124
3125/* An expression giving the cost of an addressing mode that contains ADDRESS.
3126 If not defined, the cost is computed from the ADDRESS expression and the
3127 `CONST_COSTS' values.
3128
3129 For most CISC machines, the default cost is a good approximation of the true
3130 cost of the addressing mode. However, on RISC machines, all instructions
3131 normally have the same length and execution time. Hence all addresses will
3132 have equal costs.
3133
3134 In cases where more than one form of an address is known, the form with the
3135 lowest cost will be used. If multiple forms have the same, lowest, cost,
3136 the one that is the most complex will be used.
3137
3138 For example, suppose an address that is equal to the sum of a register and a
3139 constant is used twice in the same basic block. When this macro is not
3140 defined, the address will be computed in a register and memory references
3141 will be indirect through that register. On machines where the cost of the
3142 addressing mode containing the sum is no higher than that of a simple
3143 indirect reference, this will produce an additional instruction and possibly
3144 require an additional register. Proper specification of this macro
3145 eliminates this overhead for such machines.
3146
3147 Similar use of this macro is made in strength reduction of loops.
3148
3149 ADDRESS need not be valid as an address. In such a case, the cost is not
3150 relevant and can be any value; invalid addresses need not be assigned a
3151 different cost.
3152
3153 On machines where an address involving more than one register is as cheap as
3154 an address computation involving only one register, defining `ADDRESS_COST'
3155 to reflect this can cause two registers to be live over a region of code
3156 where only one would have been if `ADDRESS_COST' were not defined in that
3157 manner. This effect should be considered in the definition of this macro.
3158 Equivalent costs should probably only be given to addresses with different
3159 numbers of registers on machines with lots of registers.
3160
3fdb2f71
GK
3161 This macro will normally either not be defined or be defined as a
3162 constant. */
3163#define ADDRESS_COST(ADDRESS) \
3164 (GET_CODE (ADDRESS) == CONST_INT ? 2 \
3165 : GET_CODE (ADDRESS) == PLUS ? 7 \
3166 : 5)
4b58290f
GK
3167
3168/* A C expression for the cost of moving data of mode MODE from a
3169 register in class FROM to one in class TO. The classes are
3170 expressed using the enumeration values such as `GENERAL_REGS'. A
3171 value of 4 is the default; other values are interpreted relative to
3172 that.
3173
3174 It is not required that the cost always equal 2 when FROM is the same as TO;
3175 on some machines it is expensive to move between registers if they are not
3176 general registers.
3177
3178 If reload sees an insn consisting of a single `set' between two hard
3179 registers, and if `REGISTER_MOVE_COST' applied to their classes returns a
3180 value of 2, reload does not check to ensure that the constraints of the insn
3181 are met. Setting a cost of other than 2 will allow reload to verify that
3182 the constraints are met. You should do this if the `movM' pattern's
3183 constraints do not allow such copying. */
3184#define REGISTER_MOVE_COST(MODE, FROM, TO) 2
3185
3186/* A C expression for the cost of moving data of mode M between a register and
3187 memory. A value of 2 is the default; this cost is relative to those in
3188 `REGISTER_MOVE_COST'.
3189
3190 If moving between registers and memory is more expensive than between two
3191 registers, you should define this macro to express the relative cost. */
3fdb2f71 3192#define MEMORY_MOVE_COST(M,C,I) (5 + memory_move_secondary_cost (M, C, I))
4b58290f
GK
3193
3194/* A C expression for the cost of a branch instruction. A value of 1 is the
3195 default; other values are interpreted relative to that. */
3196
3197#define BRANCH_COST 5
3198
3199/* Here are additional macros which do not specify precise relative costs, but
3200 only that certain actions are more expensive than GNU CC would ordinarily
3201 expect. */
3202
3203/* Define this macro as a C expression which is nonzero if accessing less than
3204 a word of memory (i.e. a `char' or a `short') is no faster than accessing a
3205 word of memory, i.e., if such access require more than one instruction or if
3206 there is no difference in cost between byte and (aligned) word loads.
3207
3208 When this macro is not defined, the compiler will access a field by finding
3209 the smallest containing object; when it is defined, a fullword load will be
3210 used if alignment permits. Unless bytes accesses are faster than word
3211 accesses, using word accesses is preferable since it may eliminate
3212 subsequent memory access if subsequent accesses occur to other fields in the
3213 same word of the structure, but to different bytes. */
3214#define SLOW_BYTE_ACCESS 0
3215
3216/* Define this macro if zero-extension (of a `char' or `short' to an `int') can
3217 be done faster if the destination is a register that is known to be zero.
3218
3219 If you define this macro, you must have instruction patterns that recognize
3220 RTL structures like this:
3221
3222 (set (strict_low_part (subreg:QI (reg:SI ...) 0)) ...)
3223
3224 and likewise for `HImode'. */
3225#define SLOW_ZERO_EXTEND 0
3226
3227/* Define this macro to be the value 1 if unaligned accesses have a cost many
3228 times greater than aligned accesses, for example if they are emulated in a
3229 trap handler.
3230
3231 When this macro is non-zero, the compiler will act as if `STRICT_ALIGNMENT'
3232 were non-zero when generating code for block moves. This can cause
3233 significantly more instructions to be produced. Therefore, do not set this
3234 macro non-zero if unaligned accesses only add a cycle or two to the time for
3235 a memory access.
3236
3237 If the value of this macro is always zero, it need not be defined. */
3238/* #define SLOW_UNALIGNED_ACCESS */
3239
3240/* Define this macro to inhibit strength reduction of memory addresses. (On
3241 some machines, such strength reduction seems to do harm rather than good.) */
3242/* #define DONT_REDUCE_ADDR */
3243
3244/* The number of scalar move insns which should be generated instead of a
3245 string move insn or a library call. Increasing the value will always make
3246 code faster, but eventually incurs high cost in increased code size.
3247
3248 If you don't define this, a reasonable default is used. */
3249/* #define MOVE_RATIO */
3250
3251/* Define this macro if it is as good or better to call a constant function
3252 address than to call an address kept in a register. */
3253#define NO_FUNCTION_CSE
3254
3255/* Define this macro if it is as good or better for a function to call itself
3256 with an explicit address than to call an address kept in a register. */
3257#define NO_RECURSIVE_FUNCTION_CSE
3258
3259/* A C statement (sans semicolon) to update the integer variable COST based on
3260 the relationship between INSN that is dependent on DEP_INSN through the
3261 dependence LINK. The default is to make no adjustment to COST. This can be
3262 used for example to specify to the scheduler that an output- or
3263 anti-dependence does not incur the same cost as a data-dependence. */
3264/* #define ADJUST_COST(INSN, LINK, DEP_INSN, COST) */
3265
3266/* A C statement (sans semicolon) to update the integer scheduling
3267 priority `INSN_PRIORITY(INSN)'. Reduce the priority to execute
3268 the INSN earlier, increase the priority to execute INSN later.
3269 Do not define this macro if you do not need to adjust the
3270 scheduling priorities of insns. */
3271/* #define ADJUST_PRIORITY (INSN) */
3272
3273\f
3274/* Dividing the output into sections. */
3275
3276/* A C expression whose value is a string containing the assembler operation
3277 that should precede instructions and read-only data. Normally `".text"' is
3278 right. */
3279#define TEXT_SECTION_ASM_OP ".text"
3280
3281/* A C expression whose value is a string containing the assembler operation to
3282 identify the following data as writable initialized data. Normally
3283 `".data"' is right. */
3284#define DATA_SECTION_ASM_OP ".data"
3285
3286/* if defined, a C expression whose value is a string containing the assembler
3287 operation to identify the following data as shared data. If not defined,
3288 `DATA_SECTION_ASM_OP' will be used. */
3289/* #define SHARED_SECTION_ASM_OP */
3290
3291/* If defined, a C expression whose value is a string containing the
3292 assembler operation to identify the following data as
3293 uninitialized global data. If not defined, and neither
3294 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
3295 uninitialized global data will be output in the data section if
3296 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
3297 used. */
3298#define BSS_SECTION_ASM_OP ".bss"
3299
3300/* If defined, a C expression whose value is a string containing the
3301 assembler operation to identify the following data as
3302 uninitialized global shared data. If not defined, and
3303 `BSS_SECTION_ASM_OP' is, the latter will be used. */
3304/* #define SHARED_BSS_SECTION_ASM_OP */
3305
3306/* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
3307 There are no shared libraries on this target so these sections need
3308 not be writable.
3309
3310 Defined in elfos.h. */
3311
3312#undef CTORS_SECTION_ASM_OP
3313#undef DTORS_SECTION_ASM_OP
3314#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"a\""
3315#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"a\""
3316
3317/* A list of names for sections other than the standard two, which are
3318 `in_text' and `in_data'. You need not define this macro on a system with no
3319 other sections (that GCC needs to use).
3320
3321 Defined in svr4.h. */
3322/* #define EXTRA_SECTIONS */
3323
3324/* One or more functions to be defined in `varasm.c'. These functions should
3325 do jobs analogous to those of `text_section' and `data_section', for your
3326 additional sections. Do not define this macro if you do not define
3327 `EXTRA_SECTIONS'.
3328
3329 Defined in svr4.h. */
3330/* #define EXTRA_SECTION_FUNCTIONS */
3331
3332/* On most machines, read-only variables, constants, and jump tables are placed
3333 in the text section. If this is not the case on your machine, this macro
3334 should be defined to be the name of a function (either `data_section' or a
3335 function defined in `EXTRA_SECTIONS') that switches to the section to be
3336 used for read-only items.
3337
3338 If these items should be placed in the text section, this macro should not
3339 be defined. */
3340/* #define READONLY_DATA_SECTION */
3341
3342/* A C statement or statements to switch to the appropriate section for output
3343 of EXP. You can assume that EXP is either a `VAR_DECL' node or a constant
3344 of some sort. RELOC indicates whether the initial value of EXP requires
3345 link-time relocations. Select the section by calling `text_section' or one
3346 of the alternatives for other sections.
3347
3348 Do not define this macro if you put all read-only variables and constants in
3349 the read-only data section (usually the text section).
3350
3351 Defined in svr4.h. */
201556f0 3352/* #define SELECT_SECTION(EXP, RELOC, ALIGN) */
4b58290f
GK
3353
3354/* A C statement or statements to switch to the appropriate section for output
3355 of RTX in mode MODE. You can assume that RTX is some kind of constant in
3356 RTL. The argument MODE is redundant except in the case of a `const_int'
3357 rtx. Select the section by calling `text_section' or one of the
3358 alternatives for other sections.
3359
3360 Do not define this macro if you put all constants in the read-only data
3361 section.
3362
3363 Defined in svr4.h. */
201556f0 3364/* #define SELECT_RTX_SECTION(MODE, RTX, ALIGN) */
4b58290f
GK
3365
3366/* Define this macro if jump tables (for `tablejump' insns) should be output in
3367 the text section, along with the assembler instructions. Otherwise, the
3368 readonly data section is used.
3369
3370 This macro is irrelevant if there is no separate readonly data section. */
3371#define JUMP_TABLES_IN_TEXT_SECTION 1
3372
3373/* Define this macro if references to a symbol must be treated differently
3374 depending on something about the variable or function named by the symbol
3375 (such as what section it is in).
3376
3377 The macro definition, if any, is executed immediately after the rtl for DECL
3378 has been created and stored in `DECL_RTL (DECL)'. The value of the rtl will
3379 be a `mem' whose address is a `symbol_ref'.
3380
3381 The usual thing for this macro to do is to record a flag in the `symbol_ref'
3382 (such as `SYMBOL_REF_FLAG') or to store a modified name string in the
3383 `symbol_ref' (if one bit is not enough information). */
c6243b4c 3384#define ENCODE_SECTION_INFO(DECL) xstormy16_encode_section_info(DECL)
4b58290f
GK
3385
3386/* Decode SYM_NAME and store the real name part in VAR, sans the characters
3387 that encode section info. Define this macro if `ENCODE_SECTION_INFO' alters
3388 the symbol's name string. */
3389/* #define STRIP_NAME_ENCODING(VAR, SYM_NAME) */
3390
3391/* A C statement to build up a unique section name, expressed as a
3392 STRING_CST node, and assign it to `DECL_SECTION_NAME (DECL)'.
3393 RELOC indicates whether the initial value of EXP requires
3394 link-time relocations. If you do not define this macro, GNU CC
3395 will use the symbol name prefixed by `.' as the section name.
3396
3397 Defined in svr4.h. */
3398/* #define UNIQUE_SECTION(DECL, RELOC) */
3399
3400\f
3401/* Position Independent Code. */
3402
3403/* The register number of the register used to address a table of static data
3404 addresses in memory. In some cases this register is defined by a
3405 processor's "application binary interface" (ABI). When this macro is
3406 defined, RTL is generated for this register once, as with the stack pointer
3407 and frame pointer registers. If this macro is not defined, it is up to the
3408 machine-dependent files to allocate such a register (if necessary). */
3409/* #define PIC_OFFSET_TABLE_REGNUM */
3410
3411/* Define this macro if the register defined by `PIC_OFFSET_TABLE_REGNUM' is
3412 clobbered by calls. Do not define this macro if `PPIC_OFFSET_TABLE_REGNUM'
3413 is not defined. */
3414/* #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED */
3415
3416/* By generating position-independent code, when two different programs (A and
3417 B) share a common library (libC.a), the text of the library can be shared
3418 whether or not the library is linked at the same address for both programs.
3419 In some of these environments, position-independent code requires not only
3420 the use of different addressing modes, but also special code to enable the
3421 use of these addressing modes.
3422
3423 The `FINALIZE_PIC' macro serves as a hook to emit these special codes once
3424 the function is being compiled into assembly code, but not before. (It is
3425 not done before, because in the case of compiling an inline function, it
3426 would lead to multiple PIC prologues being included in functions which used
3427 inline functions and were compiled to assembly language.) */
3428/* #define FINALIZE_PIC */
3429
3430/* A C expression that is nonzero if X is a legitimate immediate operand on the
3431 target machine when generating position independent code. You can assume
3432 that X satisfies `CONSTANT_P', so you need not check this. You can also
3433 assume FLAG_PIC is true, so you need not check it either. You need not
3434 define this macro if all constants (including `SYMBOL_REF') can be immediate
3435 operands when generating position independent code. */
3436/* #define LEGITIMATE_PIC_OPERAND_P(X) */
3437
3438\f
3439/* The Overall Framework of an Assembler File. */
3440
3441/* A C expression which outputs to the stdio stream STREAM some appropriate
3442 text to go at the start of an assembler file.
3443
3444 Normally this macro is defined to output a line containing `#NO_APP', which
3445 is a comment that has no effect on most assemblers but tells the GNU
3446 assembler that it can save time by not checking for certain assembler
3447 constructs.
3448
3449 On systems that use SDB, it is necessary to output certain commands; see
3450 `attasm.h'.
3451
3452 Defined in svr4.h. */
3453/* #define ASM_FILE_START(STREAM) */
3454
3455/* A C expression which outputs to the stdio stream STREAM some appropriate
3456 text to go at the end of an assembler file.
3457
3458 If this macro is not defined, the default is to output nothing special at
3459 the end of the file. Most systems don't require any definition.
3460
3461 On systems that use SDB, it is necessary to output certain commands; see
3462 `attasm.h'.
3463
3464 Defined in svr4.h. */
3465/* #define ASM_FILE_END(STREAM) */
3466
3467/* A C statement to output assembler commands which will identify the object
3468 file as having been compiled with GNU CC (or another GNU compiler).
3469
3470 If you don't define this macro, the string `gcc_compiled.:' is output. This
3471 string is calculated to define a symbol which, on BSD systems, will never be
3472 defined for any other reason. GDB checks for the presence of this symbol
3473 when reading the symbol table of an executable.
3474
3475 On non-BSD systems, you must arrange communication with GDB in some other
3476 fashion. If GDB is not used on your system, you can define this macro with
3477 an empty body.
3478
3479 Defined in svr4.h. */
3480/* #define ASM_IDENTIFY_GCC(FILE) */
3481
3482/* Like ASM_IDENTIFY_GCC, but used when dbx debugging is selected to emit
3483 a stab the debugger uses to identify gcc as the compiler that is emitted
3484 after the stabs for the filename, which makes it easier for GDB to parse.
3485
3486 Defined in svr4.h. */
3487/* #define ASM_IDENTIFY_GCC_AFTER_SOURCE(FILE) */
3488
3489/* A C string constant describing how to begin a comment in the target
3490 assembler language. The compiler assumes that the comment will end at the
3491 end of the line. */
7c87e9f9 3492#define ASM_COMMENT_START ";"
4b58290f
GK
3493
3494/* A C string constant for text to be output before each `asm' statement or
3495 group of consecutive ones. Normally this is `"#APP"', which is a comment
3496 that has no effect on most assemblers but tells the GNU assembler that it
3497 must check the lines that follow for all valid assembler constructs. */
3498#define ASM_APP_ON "#APP\n"
3499
3500/* A C string constant for text to be output after each `asm' statement or
3501 group of consecutive ones. Normally this is `"#NO_APP"', which tells the
3502 GNU assembler to resume making the time-saving assumptions that are valid
3503 for ordinary compiler output. */
3504#define ASM_APP_OFF "#NO_APP\n"
3505
3506/* A C statement to output COFF information or DWARF debugging information
3507 which indicates that filename NAME is the current source file to the stdio
3508 stream STREAM.
3509
3510 This macro need not be defined if the standard form of output for the file
3511 format in use is appropriate. */
3512/* #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) */
3513
3514/* A C statement to output DBX or SDB debugging information before code for
3515 line number LINE of the current source file to the stdio stream STREAM.
3516
3517 This macro need not be defined if the standard form of debugging information
3518 for the debugger in use is appropriate.
3519
3520 Defined in svr4.h. */
3521/* #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) */
3522
3523/* A C statement to output something to the assembler file to handle a `#ident'
3524 directive containing the text STRING. If this macro is not defined, nothing
3525 is output for a `#ident' directive.
3526
3527 Defined in svr4.h. */
3528/* #define ASM_OUTPUT_IDENT(STREAM, STRING) */
3529
3530/* A C statement to output something to the assembler file to switch to section
3531 NAME for object DECL which is either a `FUNCTION_DECL', a `VAR_DECL' or
3532 `NULL_TREE'. Some target formats do not support arbitrary sections. Do not
3533 define this macro in such cases.
3534
3535 At present this macro is only used to support section attributes. When this
3536 macro is undefined, section attributes are disabled.
3537
3538 Defined in svr4.h. */
3539/* #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME) */
3540
3541/* A C statement to output any assembler statements which are required to
3542 precede any Objective C object definitions or message sending. The
3543 statement is executed only when compiling an Objective C program. */
3544/* #define OBJC_PROLOGUE */
3545
3546\f
3547/* Output of Data. */
3548
3549/* A C statement to output to the stdio stream STREAM an assembler instruction
3550 to assemble a floating-point constant of `TFmode', `DFmode', `SFmode',
3551 `TQFmode', `HFmode', or `QFmode', respectively, whose value is VALUE. VALUE
3552 will be a C expression of type `REAL_VALUE_TYPE'. Macros such as
3553 `REAL_VALUE_TO_TARGET_DOUBLE' are useful for writing these definitions. */
3554
3555/* This is how to output an assembler line defining a `double'. */
3556#define ASM_OUTPUT_DOUBLE(STREAM,VALUE) \
3557do { char dstr[30]; \
3558 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
3559 fprintf ((STREAM), "\t.double %s\n", dstr); \
3560 } while (0)
3561
3562/* This is how to output an assembler line defining a `float' constant. */
3563#define ASM_OUTPUT_FLOAT(STREAM,VALUE) \
3564do { char dstr[30]; \
3565 REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \
3566 fprintf ((STREAM), "\t.float %s\n", dstr); \
3567 } while (0)
3568
3569/* #define ASM_OUTPUT_LONG_DOUBLE(STREAM, VALUE) */
3570/* #define ASM_OUTPUT_THREE_QUARTER_FLOAT(STREAM, VALUE) */
3571/* #define ASM_OUTPUT_SHORT_FLOAT(STREAM, VALUE) */
3572/* #define ASM_OUTPUT_BYTE_FLOAT(STREAM, VALUE) */
3573
3574/* A C statement to output to the stdio stream STREAM an assembler instruction
3575 to assemble an integer of 16, 8, 4, 2 or 1 bytes, respectively, whose value
3576 is VALUE. The argument EXP will be an RTL expression which represents a
3577 constant value. Use `output_addr_const (STREAM, EXP)' to output this value
3578 as an assembler expression.
3579
3580 For sizes larger than `UNITS_PER_WORD', if the action of a macro would be
3581 identical to repeatedly calling the macro corresponding to a size of
3582 `UNITS_PER_WORD', once for each word, you need not define the macro. */
3583/* #define ASM_OUTPUT_QUADRUPLE_INT(STREAM, EXP) */
3584/* #define ASM_OUTPUT_DOUBLE_INT(STREAM, EXP) */
3585
3586/* This is how to output an assembler line defining a `char' constant. */
3587#define ASM_OUTPUT_CHAR(FILE, VALUE) \
3588do { \
3589 fprintf (FILE, "\t.byte\t"); \
3590 output_addr_const (FILE, (VALUE)); \
3591 fprintf (FILE, "\n"); \
3592} while (0)
3593
3594/* This is how to output an assembler line defining a `short' constant. */
3595#define ASM_OUTPUT_SHORT(FILE, VALUE) \
3596do { \
3597 fprintf (FILE, "\t.hword\t"); \
3598 output_addr_const (FILE, (VALUE)); \
3599 fprintf (FILE, "\n"); \
3600} while (0)
3601
3602/* This is how to output an assembler line defining an `int' constant.
3603 We also handle symbol output here. */
3604#define ASM_OUTPUT_INT(FILE, VALUE) \
3605do { \
3606 fprintf (FILE, "\t.word\t"); \
3607 output_addr_const (FILE, (VALUE)); \
3608 fprintf (FILE, "\n"); \
3609} while (0)
3610
3611/* A C statement to output to the stdio stream STREAM an assembler instruction
3612 to assemble a single byte containing the number VALUE.
3613
3614 This declaration must be present. */
3615#define ASM_OUTPUT_BYTE(STREAM, VALUE) \
3616 fprintf (STREAM, "\t%s\t0x%x\n", ASM_BYTE_OP, (VALUE))
3617
3618/* A C string constant giving the pseudo-op to use for a sequence of
3619 single-byte constants. If this macro is not defined, the default
3620 is `"byte"'.
3621
3622 Defined in svr4.h. */
3623/* #define ASM_BYTE_OP */
3624
3625/* A C statement to output to the stdio stream STREAM an assembler instruction
3626 to assemble a string constant containing the LEN bytes at PTR. PTR will be
3627 a C expression of type `char *' and LEN a C expression of type `int'.
3628
3629 If the assembler has a `.ascii' pseudo-op as found in the Berkeley Unix
3630 assembler, do not define the macro `ASM_OUTPUT_ASCII'.
3631
3632 Defined in svr4.h. */
3633/* #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) */
3634
3635/* You may define this macro as a C expression. You should define the
3636 expression to have a non-zero value if GNU CC should output the
3637 constant pool for a function before the code for the function, or
3638 a zero value if GNU CC should output the constant pool after the
3639 function. If you do not define this macro, the usual case, GNU CC
3640 will output the constant pool before the function. */
3641/* #define CONSTANT_POOL_BEFORE_FUNCTION */
3642
3643/* A C statement to output assembler commands to define the start of the
3644 constant pool for a function. FUNNAME is a string giving the name of the
3645 function. Should the return type of the function be required, it can be
3646 obtained via FUNDECL. SIZE is the size, in bytes, of the constant pool that
3647 will be written immediately after this call.
3648
3649 If no constant-pool prefix is required, the usual case, this macro need not
3650 be defined. */
3651/* #define ASM_OUTPUT_POOL_PROLOGUE(FILE FUNNAME FUNDECL SIZE) */
3652
3653/* A C statement (with or without semicolon) to output a constant in the
3654 constant pool, if it needs special treatment. (This macro need not do
3655 anything for RTL expressions that can be output normally.)
3656
3657 The argument FILE is the standard I/O stream to output the assembler code
3658 on. X is the RTL expression for the constant to output, and MODE is the
3659 machine mode (in case X is a `const_int'). ALIGN is the required alignment
3660 for the value X; you should output an assembler directive to force this much
3661 alignment.
3662
3663 The argument LABELNO is a number to use in an internal label for the address
3664 of this pool entry. The definition of this macro is responsible for
3665 outputting the label definition at the proper place. Here is how to do
3666 this:
3667
3668 ASM_OUTPUT_INTERNAL_LABEL (FILE, "LC", LABELNO);
3669
3670 When you output a pool entry specially, you should end with a `goto' to the
3671 label JUMPTO. This will prevent the same pool entry from being output a
3672 second time in the usual manner.
3673
3674 You need not define this macro if it would do nothing. */
3675/* #define ASM_OUTPUT_SPECIAL_POOL_ENTRY(FILE, X, MODE, ALIGN, LABELNO, JUMPTO) */
3676
3677/* Define this macro as a C expression which is nonzero if the constant EXP, of
3678 type `tree', should be output after the code for a function. The compiler
3679 will normally output all constants before the function; you need not define
3680 this macro if this is OK. */
3681/* #define CONSTANT_AFTER_FUNCTION_P(EXP) */
3682
3683/* A C statement to output assembler commands to at the end of the constant
3684 pool for a function. FUNNAME is a string giving the name of the function.
3685 Should the return type of the function be required, you can obtain it via
3686 FUNDECL. SIZE is the size, in bytes, of the constant pool that GNU CC wrote
3687 immediately before this call.
3688
3689 If no constant-pool epilogue is required, the usual case, you need not
3690 define this macro. */
3691/* #define ASM_OUTPUT_POOL_EPILOGUE (FILE FUNNAME FUNDECL SIZE) */
3692
3693/* Define this macro as a C expression which is nonzero if C is used as a
3694 logical line separator by the assembler.
3695
3696 If you do not define this macro, the default is that only the character `;'
3697 is treated as a logical line separator. */
3698#define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '|')
3699
3700/* These macros are provided by `real.h' for writing the definitions of
3701 `ASM_OUTPUT_DOUBLE' and the like: */
3702
3703/* These translate X, of type `REAL_VALUE_TYPE', to the target's floating point
3704 representation, and store its bit pattern in the array of `long int' whose
3705 address is L. The number of elements in the output array is determined by
3706 the size of the desired target floating point data type: 32 bits of it go in
3707 each `long int' array element. Each array element holds 32 bits of the
3708 result, even if `long int' is wider than 32 bits on the host machine.
3709
3710 The array element values are designed so that you can print them out using
3711 `fprintf' in the order they should appear in the target machine's memory. */
3712/* #define REAL_VALUE_TO_TARGET_SINGLE(X, L) */
3713/* #define REAL_VALUE_TO_TARGET_DOUBLE(X, L) */
3714/* #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(X, L) */
3715
3716/* This macro converts X, of type `REAL_VALUE_TYPE', to a decimal number and
3717 stores it as a string into STRING. You must pass, as STRING, the address of
3718 a long enough block of space to hold the result.
3719
3720 The argument FORMAT is a `printf'-specification that serves as a suggestion
3721 for how to format the output string. */
3722/* #define REAL_VALUE_TO_DECIMAL(X, FORMAT, STRING) */
3723
3724\f
3725/* Output of Uninitialized Variables. */
3726
3727/* A C statement (sans semicolon) to output to the stdio stream STREAM the
3728 assembler definition of a common-label named NAME whose size is SIZE bytes.
3729 The variable ROUNDED is the size rounded up to whatever alignment the caller
3730 wants.
3731
3732 Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
3733 before and after that, output the additional assembler syntax for defining
3734 the name, and a newline.
3735
3736 This macro controls how the assembler definitions of uninitialized global
3737 variables are output. */
3738/* #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) */
3739
3740/* Like `ASM_OUTPUT_COMMON' except takes the required alignment as a separate,
3741 explicit argument. If you define this macro, it is used in place of
3742 `ASM_OUTPUT_COMMON', and gives you more flexibility in handling the required
3743 alignment of the variable. The alignment is specified as the number of
3744 bits.
3745
3746 Defined in svr4.h. */
3747/* #define ASM_OUTPUT_ALIGNED_COMMON(STREAM, NAME, SIZE, ALIGNMENT) */
3748
3749/* Like ASM_OUTPUT_ALIGNED_COMMON except that it takes an additional argument -
3750 the DECL of the variable to be output, if there is one. This macro can be
3751 called with DECL == NULL_TREE. If you define this macro, it is used in
3752 place of both ASM_OUTPUT_COMMON and ASM_OUTPUT_ALIGNED_COMMON, and gives you
3753 more flexibility in handling the destination of the variable. */
3754/* #define ASM_OUTPUT_DECL_COMMON (STREAM, DECL, NAME, SIZE, ALIGNMENT) */
3755
3756/* If defined, it is similar to `ASM_OUTPUT_COMMON', except that it is used
3757 when NAME is shared. If not defined, `ASM_OUTPUT_COMMON' will be used. */
3758/* #define ASM_OUTPUT_SHARED_COMMON(STREAM, NAME, SIZE, ROUNDED) */
3759
3760/* A C statement (sans semicolon) to output to the stdio stream STREAM the
3761 assembler definition of uninitialized global DECL named NAME whose size is
3762 SIZE bytes. The variable ROUNDED is the size rounded up to whatever
3763 alignment the caller wants.
3764
3765 Try to use function `asm_output_bss' defined in `varasm.c' when defining
3766 this macro. If unable, use the expression `assemble_name (STREAM, NAME)' to
3767 output the name itself; before and after that, output the additional
3768 assembler syntax for defining the name, and a newline.
3769
3770 This macro controls how the assembler definitions of uninitialized global
3771 variables are output. This macro exists to properly support languages like
3772 `c++' which do not have `common' data. However, this macro currently is not
3773 defined for all targets. If this macro and `ASM_OUTPUT_ALIGNED_BSS' are not
3774 defined then `ASM_OUTPUT_COMMON' or `ASM_OUTPUT_ALIGNED_COMMON' or
3775 `ASM_OUTPUT_DECL_COMMON' is used. */
3776/* #define ASM_OUTPUT_BSS(STREAM, DECL, NAME, SIZE, ROUNDED) */
3777
3778/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a separate,
3779 explicit argument. If you define this macro, it is used in place of
3780 `ASM_OUTPUT_BSS', and gives you more flexibility in handling the required
3781 alignment of the variable. The alignment is specified as the number of
3782 bits.
3783
3784 Try to use function `asm_output_aligned_bss' defined in file `varasm.c' when
3785 defining this macro. */
3786/* #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGNMENT) */
3787
3788/* If defined, it is similar to `ASM_OUTPUT_BSS', except that it is used when
3789 NAME is shared. If not defined, `ASM_OUTPUT_BSS' will be used. */
3790/* #define ASM_OUTPUT_SHARED_BSS(STREAM, DECL, NAME, SIZE, ROUNDED) */
3791
3792/* A C statement (sans semicolon) to output to the stdio stream STREAM the
3793 assembler definition of a local-common-label named NAME whose size is SIZE
3794 bytes. The variable ROUNDED is the size rounded up to whatever alignment
3795 the caller wants.
3796
3797 Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
3798 before and after that, output the additional assembler syntax for defining
3799 the name, and a newline.
3800
3801 This macro controls how the assembler definitions of uninitialized static
3802 variables are output. */
3803/* #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) */
3804
3805/* Like `ASM_OUTPUT_LOCAL' except takes the required alignment as a separate,
3806 explicit argument. If you define this macro, it is used in place of
3807 `ASM_OUTPUT_LOCAL', and gives you more flexibility in handling the required
3808 alignment of the variable. The alignment is specified as the number of
3809 bits.
3810
3811 Defined in svr4.h. */
3812/* #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGNMENT) */
3813
3814/* Like `ASM_OUTPUT_ALIGNED_LOCAL' except that it takes an additional
3815 parameter - the DECL of variable to be output, if there is one.
3816 This macro can be called with DECL == NULL_TREE. If you define
3817 this macro, it is used in place of `ASM_OUTPUT_LOCAL' and
3818 `ASM_OUTPUT_ALIGNED_LOCAL', and gives you more flexibility in
3819 handling the destination of the variable. */
3820/* #define ASM_OUTPUT_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGNMENT) */
3821
3822/* If defined, it is similar to `ASM_OUTPUT_LOCAL', except that it is used when
3823 NAME is shared. If not defined, `ASM_OUTPUT_LOCAL' will be used. */
3824/* #define ASM_OUTPUT_SHARED_LOCAL (STREAM, NAME, SIZE, ROUNDED) */
3825
3826\f
3827/* Output and Generation of Labels. */
3828
3829/* A C statement (sans semicolon) to output to the stdio stream STREAM the
3830 assembler definition of a label named NAME. Use the expression
3831 `assemble_name (STREAM, NAME)' to output the name itself; before and after
3832 that, output the additional assembler syntax for defining the name, and a
3833 newline. */
3834#define ASM_OUTPUT_LABEL(STREAM, NAME) \
3835do { \
3836 assemble_name (STREAM, NAME); \
3837 fputs (":\n", STREAM); \
3838} while (0)
3839
3840/* A C statement to output to the stdio stream STREAM the assembler
3841 definition of a symbol named SYMBOL. */
3842#define ASM_OUTPUT_SYMBOL_REF(STREAM, SYMBOL) \
3843 do { \
3844 if (SYMBOL_REF_FLAG (SYMBOL)) \
3845 { \
3846 fputs ("@fptr(", STREAM); \
3847 assemble_name (STREAM, XSTR (SYMBOL, 0)); \
3848 fputc (')', STREAM); \
3849 } \
3850 else \
3851 assemble_name (STREAM, XSTR (SYMBOL, 0)); \
3852 } while (0)
3853
2f0b7af6
GK
3854/* A C statement to output to the stdio stream STREAM the assembler
3855 definition of a label, the textual form is in 'BUF'. Not used
3856 for %l. */
3857#define ASM_OUTPUT_LABEL_REF(STREAM, NAME) \
3858do { \
3859 fputs ("@fptr(", STREAM); \
3860 assemble_name (STREAM, NAME); \
3861 fputc (')', STREAM); \
3862} while (0)
3863
4b58290f
GK
3864/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
3865 necessary for declaring the name NAME of a function which is being defined.
3866 This macro is responsible for outputting the label definition (perhaps using
3867 `ASM_OUTPUT_LABEL'). The argument DECL is the `FUNCTION_DECL' tree node
3868 representing the function.
3869
3870 If this macro is not defined, then the function name is defined in the usual
3871 manner as a label (by means of `ASM_OUTPUT_LABEL').
3872
3873 Defined in svr4.h. */
3874/* #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) */
3875
3876/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
3877 necessary for declaring the size of a function which is being defined. The
3878 argument NAME is the name of the function. The argument DECL is the
3879 `FUNCTION_DECL' tree node representing the function.
3880
3881 If this macro is not defined, then the function size is not defined.
3882
3883 Defined in svr4.h. */
3884/* #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) */
3885
3886/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
3887 necessary for declaring the name NAME of an initialized variable which is
3888 being defined. This macro must output the label definition (perhaps using
3889 `ASM_OUTPUT_LABEL'). The argument DECL is the `VAR_DECL' tree node
3890 representing the variable.
3891
3892 If this macro is not defined, then the variable name is defined in the usual
3893 manner as a label (by means of `ASM_OUTPUT_LABEL').
3894
3895 Defined in svr4.h. */
3896/* #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) */
3897
3898/* A C statement (sans semicolon) to finish up declaring a variable name once
3899 the compiler has processed its initializer fully and thus has had a chance
3900 to determine the size of an array when controlled by an initializer. This
3901 is used on systems where it's necessary to declare something about the size
3902 of the object.
3903
3904 If you don't define this macro, that is equivalent to defining it to do
3905 nothing.
3906
3907 Defined in svr4.h. */
3908/* #define ASM_FINISH_DECLARE_OBJECT(STREAM, DECL, TOPLEVEL, ATEND) */
3909
3910/* A C statement (sans semicolon) to output to the stdio stream STREAM some
3911 commands that will make the label NAME global; that is, available for
3912 reference from other files. Use the expression `assemble_name (STREAM,
3913 NAME)' to output the name itself; before and after that, output the
3914 additional assembler syntax for making that name global, and a newline. */
3915#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
3916do { \
3917 fputs ("\t.globl ", STREAM); \
3918 assemble_name (STREAM, NAME); \
3919 fputs ("\n", STREAM); \
3920} while (0)
3921
3922/* A C statement (sans semicolon) to output to the stdio stream STREAM some
3923 commands that will make the label NAME weak; that is, available for
3924 reference from other files but only used if no other definition is
3925 available. Use the expression `assemble_name (STREAM, NAME)' to output the
3926 name itself; before and after that, output the additional assembler syntax
3927 for making that name weak, and a newline.
3928
3929 If you don't define this macro, GNU CC will not support weak symbols and you
3930 should not define the `SUPPORTS_WEAK' macro.
3931
3932 Defined in svr4.h. */
3933/* #define ASM_WEAKEN_LABEL */
3934
3935/* A C expression which evaluates to true if the target supports weak symbols.
3936
3937 If you don't define this macro, `defaults.h' provides a default definition.
3938 If `ASM_WEAKEN_LABEL' is defined, the default definition is `1'; otherwise,
3939 it is `0'. Define this macro if you want to control weak symbol support
3940 with a compiler flag such as `-melf'. */
3941/* #define SUPPORTS_WEAK */
3942
3943/* A C statement (sans semicolon) to mark DECL to be emitted as a
3944 public symbol such that extra copies in multiple translation units
3945 will be discarded by the linker. Define this macro if your object
3946 file format provides support for this concept, such as the `COMDAT'
3947 section flags in the Microsoft Windows PE/COFF format, and this
3948 support requires changes to DECL, such as putting it in a separate
3949 section.
3950
3951 Defined in svr4.h. */
3952/* #define MAKE_DECL_ONE_ONLY */
3953
3954/* A C expression which evaluates to true if the target supports one-only
3955 semantics.
3956
3957 If you don't define this macro, `varasm.c' provides a default definition.
3958 If `MAKE_DECL_ONE_ONLY' is defined, the default definition is `1';
3959 otherwise, it is `0'. Define this macro if you want to control one-only
3960 symbol support with a compiler flag, or if setting the `DECL_ONE_ONLY' flag
3961 is enough to mark a declaration to be emitted as one-only. */
3962/* #define SUPPORTS_ONE_ONLY */
3963
3964/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
3965 necessary for declaring the name of an external symbol named NAME which is
3966 referenced in this compilation but not defined. The value of DECL is the
3967 tree node for the declaration.
3968
3969 This macro need not be defined if it does not need to output anything. The
3970 GNU assembler and most Unix assemblers don't require anything. */
3971/* #define ASM_OUTPUT_EXTERNAL(STREAM, DECL, NAME) */
3972
3973/* A C statement (sans semicolon) to output on STREAM an assembler pseudo-op to
3974 declare a library function name external. The name of the library function
3975 is given by SYMREF, which has type `rtx' and is a `symbol_ref'.
3976
3977 This macro need not be defined if it does not need to output anything. The
3978 GNU assembler and most Unix assemblers don't require anything.
3979
3980 Defined in svr4.h. */
3981/* #define ASM_OUTPUT_EXTERNAL_LIBCALL(STREAM, SYMREF) */
3982
3983/* A C statement (sans semicolon) to output to the stdio stream STREAM a
3984 reference in assembler syntax to a label named NAME. This should add `_' to
3985 the front of the name, if that is customary on your operating system, as it
3986 is in most Berkeley Unix systems. This macro is used in `assemble_name'. */
3987/* #define ASM_OUTPUT_LABELREF(STREAM, NAME) */
3988
3989/* A C statement to output to the stdio stream STREAM a label whose name is
3990 made from the string PREFIX and the number NUM.
3991
3992 It is absolutely essential that these labels be distinct from the labels
3993 used for user-level functions and variables. Otherwise, certain programs
3994 will have name conflicts with internal labels.
3995
3996 It is desirable to exclude internal labels from the symbol table of the
3997 object file. Most assemblers have a naming convention for labels that
3998 should be excluded; on many systems, the letter `L' at the beginning of a
3999 label has this effect. You should find out what convention your system
4000 uses, and follow it.
4001
4002 The usual definition of this macro is as follows:
4003
4004 fprintf (STREAM, "L%s%d:\n", PREFIX, NUM)
4005
4006 Defined in svr4.h. */
4007/* #define ASM_OUTPUT_INTERNAL_LABEL(STREAM, PREFIX, NUM) */
4008
4009/* A C statement to store into the string STRING a label whose name is made
4010 from the string PREFIX and the number NUM.
4011
4012 This string, when output subsequently by `assemble_name', should produce the
4013 output that `ASM_OUTPUT_INTERNAL_LABEL' would produce with the same PREFIX
4014 and NUM.
4015
4016 If the string begins with `*', then `assemble_name' will output the rest of
4017 the string unchanged. It is often convenient for
4018 `ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the string doesn't
4019 start with `*', then `ASM_OUTPUT_LABELREF' gets to output the string, and
4020 may change it. (Of course, `ASM_OUTPUT_LABELREF' is also part of your
4021 machine description, so you should know what it does on your machine.)
4022
4023 Defined in svr4.h. */
4024/* #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) */
4025
4026/* A C expression to assign to OUTVAR (which is a variable of type `char *') a
4027 newly allocated string made from the string NAME and the number NUMBER, with
4028 some suitable punctuation added. Use `alloca' to get space for the string.
4029
4030 The string will be used as an argument to `ASM_OUTPUT_LABELREF' to produce
4031 an assembler label for an internal static variable whose name is NAME.
4032 Therefore, the string must be such as to result in valid assembler code.
4033 The argument NUMBER is different each time this macro is executed; it
4034 prevents conflicts between similarly-named internal static variables in
4035 different scopes.
4036
4037 Ideally this string should not be a valid C identifier, to prevent any
4038 conflict with the user's own symbols. Most assemblers allow periods or
4039 percent signs in assembler symbols; putting at least one of these between
4040 the name and the number will suffice. */
4041#define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER) \
4042do { \
4043 (OUTVAR) = (char *) alloca (strlen ((NAME)) + 12); \
4044 sprintf ((OUTVAR), "%s.%ld", (NAME), (long)(NUMBER)); \
4045} while (0)
4046
4047/* A C statement to output to the stdio stream STREAM assembler code which
4048 defines (equates) the symbol NAME to have the value VALUE.
4049
4050 If SET_ASM_OP is defined, a default definition is provided which is correct
4051 for most systems.
4052
4053 Defined in svr4.h. */
4054/* #define ASM_OUTPUT_DEF(STREAM, NAME, VALUE) */
4055
4056/* A C statement to output to the stdio stream STREAM assembler code which
4057 defines (equates) the weak symbol NAME to have the value VALUE.
4058
4059 Define this macro if the target only supports weak aliases; define
4060 ASM_OUTPUT_DEF instead if possible. */
4061/* #define ASM_OUTPUT_WEAK_ALIAS (STREAM, NAME, VALUE) */
4062
4063/* Define this macro to override the default assembler names used for Objective
4064 C methods.
4065
4066 The default name is a unique method number followed by the name of the class
4067 (e.g. `_1_Foo'). For methods in categories, the name of the category is
4068 also included in the assembler name (e.g. `_1_Foo_Bar').
4069
4070 These names are safe on most systems, but make debugging difficult since the
4071 method's selector is not present in the name. Therefore, particular systems
4072 define other ways of computing names.
4073
4074 BUF is an expression of type `char *' which gives you a buffer in which to
4075 store the name; its length is as long as CLASS_NAME, CAT_NAME and SEL_NAME
4076 put together, plus 50 characters extra.
4077
4078 The argument IS_INST specifies whether the method is an instance method or a
4079 class method; CLASS_NAME is the name of the class; CAT_NAME is the name of
4080 the category (or NULL if the method is not in a category); and SEL_NAME is
4081 the name of the selector.
4082
4083 On systems where the assembler can handle quoted names, you can use this
4084 macro to provide more human-readable names. */
4085/* #define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME) */
4086
4087\f
4088/* Macros Controlling Initialization Routines. */
4089
4090/* If defined, a C string constant for the assembler operation to identify the
4091 following data as initialization code. If not defined, GNU CC will assume
4092 such a section does not exist. When you are using special sections for
4093 initialization and termination functions, this macro also controls how
4094 `crtstuff.c' and `libgcc2.c' arrange to run the initialization functions.
4095
4096 Defined in svr4.h. */
4097/* #define INIT_SECTION_ASM_OP */
4098
4099/* If defined, `main' will not call `__main' as described above. This macro
4100 should be defined for systems that control the contents of the init section
4101 on a symbol-by-symbol basis, such as OSF/1, and should not be defined
4102 explicitly for systems that support `INIT_SECTION_ASM_OP'. */
4103/* #define HAS_INIT_SECTION */
4104
4105/* If defined, a C string constant for a switch that tells the linker that the
4106 following symbol is an initialization routine. */
4107/* #define LD_INIT_SWITCH */
4108
4109/* If defined, a C string constant for a switch that tells the linker that the
4110 following symbol is a finalization routine. */
4111/* #define LD_FINI_SWITCH */
4112
4113/* If defined, `main' will call `__main' despite the presence of
4114 `INIT_SECTION_ASM_OP'. This macro should be defined for systems where the
4115 init section is not actually run automatically, but is still useful for
4116 collecting the lists of constructors and destructors. */
4117/* #define INVOKE__main */
4118
4119/* Define this macro as a C statement to output on the stream STREAM the
4120 assembler code to arrange to call the function named NAME at initialization
4121 time.
4122
4123 Assume that NAME is the name of a C function generated automatically by the
4124 compiler. This function takes no arguments. Use the function
4125 `assemble_name' to output the name NAME; this performs any system-specific
4126 syntactic transformations such as adding an underscore.
4127
4128 If you don't define this macro, nothing special is output to arrange to call
4129 the function. This is correct when the function will be called in some
4130 other manner--for example, by means of the `collect2' program, which looks
4131 through the symbol table to find these functions by their names.
4132
4133 Defined in svr4.h. */
4134/* #define ASM_OUTPUT_CONSTRUCTOR(STREAM, NAME) */
4135
4136/* This is like `ASM_OUTPUT_CONSTRUCTOR' but used for termination functions
4137 rather than initialization functions.
4138
4139 Defined in svr4.h. */
4140/* #define ASM_OUTPUT_DESTRUCTOR(STREAM, NAME) */
4141
4142/* If your system uses `collect2' as the means of processing constructors, then
4143 that program normally uses `nm' to scan an object file for constructor
4144 functions to be called. On certain kinds of systems, you can define these
4145 macros to make `collect2' work faster (and, in some cases, make it work at
4146 all): */
4147
4148/* Define this macro if the system uses COFF (Common Object File Format) object
4149 files, so that `collect2' can assume this format and scan object files
4150 directly for dynamic constructor/destructor functions. */
4151/* #define OBJECT_FORMAT_COFF */
4152
4153/* Define this macro if the system uses ROSE format object files, so that
4154 `collect2' can assume this format and scan object files directly for dynamic
4155 constructor/destructor functions.
4156
4157 These macros are effective only in a native compiler; `collect2' as
4158 part of a cross compiler always uses `nm' for the target machine. */
4159/* #define OBJECT_FORMAT_ROSE */
4160
4161/* Define this macro if the system uses ELF format object files.
4162
4163 Defined in svr4.h. */
4164/* #define OBJECT_FORMAT_ELF */
4165
4166/* Define this macro as a C string constant containing the file name to use to
4167 execute `nm'. The default is to search the path normally for `nm'.
4168
4169 If your system supports shared libraries and has a program to list the
4170 dynamic dependencies of a given library or executable, you can define these
4171 macros to enable support for running initialization and termination
4172 functions in shared libraries: */
4173/* #define REAL_NM_FILE_NAME */
4174
4175/* Define this macro to a C string constant containing the name of the program
4176 which lists dynamic dependencies, like `"ldd"' under SunOS 4. */
4177/* #define LDD_SUFFIX */
4178
4179/* Define this macro to be C code that extracts filenames from the output of
4180 the program denoted by `LDD_SUFFIX'. PTR is a variable of type `char *'
4181 that points to the beginning of a line of output from `LDD_SUFFIX'. If the
4182 line lists a dynamic dependency, the code must advance PTR to the beginning
4183 of the filename on that line. Otherwise, it must set PTR to `NULL'. */
4184/* #define PARSE_LDD_OUTPUT (PTR) */
4185
4186\f
4187/* Output of Assembler Instructions. */
4188
4189/* A C initializer containing the assembler's names for the machine registers,
4190 each one as a C string constant. This is what translates register numbers
4191 in the compiler into assembler language. */
4192#define REGISTER_NAMES \
4193{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10", \
4194 "r11", "r12", "r13", "psw", "sp", "carry", "fp", "ap" }
4195
4196/* If defined, a C initializer for an array of structures containing a name and
4197 a register number. This macro defines additional names for hard registers,
4198 thus allowing the `asm' option in declarations to refer to registers using
4199 alternate names. */
4200#define ADDITIONAL_REGISTER_NAMES \
4201 { { "r14", 14 }, \
4202 { "r15", 15 } }
4203
4204/* Define this macro if you are using an unusual assembler that requires
4205 different names for the machine instructions.
4206
4207 The definition is a C statement or statements which output an assembler
4208 instruction opcode to the stdio stream STREAM. The macro-operand PTR is a
4209 variable of type `char *' which points to the opcode name in its "internal"
4210 form--the form that is written in the machine description. The definition
4211 should output the opcode name to STREAM, performing any translation you
4212 desire, and increment the variable PTR to point at the end of the opcode so
4213 that it will not be output twice.
4214
4215 In fact, your macro definition may process less than the entire opcode name,
4216 or more than the opcode name; but if you want to process text that includes
4217 `%'-sequences to substitute operands, you must take care of the substitution
4218 yourself. Just be sure to increment PTR over whatever text should not be
4219 output normally.
4220
4221 If you need to look at the operand values, they can be found as the elements
4222 of `recog_data.operand'.
4223
4224 If the macro definition does nothing, the instruction is output in the usual
4225 way. */
4226/* #define ASM_OUTPUT_OPCODE(STREAM, PTR) */
4227
4228/* If defined, a C statement to be executed just prior to the output of
4229 assembler code for INSN, to modify the extracted operands so they will be
4230 output differently.
4231
4232 Here the argument OPVEC is the vector containing the operands extracted from
4233 INSN, and NOPERANDS is the number of elements of the vector which contain
4234 meaningful data for this insn. The contents of this vector are what will be
4235 used to convert the insn template into assembler code, so you can change the
4236 assembler output by changing the contents of the vector.
4237
4238 This macro is useful when various assembler syntaxes share a single file of
4239 instruction patterns; by defining this macro differently, you can cause a
4240 large class of instructions to be output differently (such as with
4241 rearranged operands). Naturally, variations in assembler syntax affecting
4242 individual insn patterns ought to be handled by writing conditional output
4243 routines in those patterns.
4244
4245 If this macro is not defined, it is equivalent to a null statement. */
4246/* #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) */
4247
4248/* If defined, `FINAL_PRESCAN_INSN' will be called on each
4249 `CODE_LABEL'. In that case, OPVEC will be a null pointer and
4250 NOPERANDS will be zero. */
4251/* #define FINAL_PRESCAN_LABEL */
4252
4253/* A C compound statement to output to stdio stream STREAM the assembler syntax
4254 for an instruction operand X. X is an RTL expression.
4255
4256 CODE is a value that can be used to specify one of several ways of printing
4257 the operand. It is used when identical operands must be printed differently
4258 depending on the context. CODE comes from the `%' specification that was
4259 used to request printing of the operand. If the specification was just
4260 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is
4261 the ASCII code for LTR.
4262
4263 If X is a register, this macro should print the register's name. The names
4264 can be found in an array `reg_names' whose type is `char *[]'. `reg_names'
4265 is initialized from `REGISTER_NAMES'.
4266
4267 When the machine description has a specification `%PUNCT' (a `%' followed by
4268 a punctuation character), this macro is called with a null pointer for X and
4269 the punctuation character for CODE. */
c6243b4c 4270#define PRINT_OPERAND(STREAM, X, CODE) xstormy16_print_operand (STREAM, X, CODE)
4b58290f
GK
4271
4272/* A C expression which evaluates to true if CODE is a valid punctuation
4273 character for use in the `PRINT_OPERAND' macro. If
4274 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation
4275 characters (except for the standard one, `%') are used in this way. */
4276/* #define PRINT_OPERAND_PUNCT_VALID_P(CODE) */
4277
4278/* A C compound statement to output to stdio stream STREAM the assembler syntax
4279 for an instruction operand that is a memory reference whose address is X. X
4280 is an RTL expression.
4281
4282 On some machines, the syntax for a symbolic address depends on the section
4283 that the address refers to. On these machines, define the macro
4284 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and
4285 then check for it here.
4286
4287 This declaration must be present. */
c6243b4c 4288#define PRINT_OPERAND_ADDRESS(STREAM, X) xstormy16_print_operand_address (STREAM, X)
4b58290f
GK
4289
4290/* A C statement, to be executed after all slot-filler instructions have been
4291 output. If necessary, call `dbr_sequence_length' to determine the number of
4292 slots filled in a sequence (zero if not currently outputting a sequence), to
4293 decide how many no-ops to output, or whatever.
4294
4295 Don't define this macro if it has nothing to do, but it is helpful in
4296 reading assembly output if the extent of the delay sequence is made explicit
4297 (e.g. with white space).
4298
4299 Note that output routines for instructions with delay slots must be prepared
4300 to deal with not being output as part of a sequence (i.e. when the
4301 scheduling pass is not run, or when no slot fillers could be found.) The
4302 variable `final_sequence' is null when not processing a sequence, otherwise
4303 it contains the `sequence' rtx being output. */
4304/* #define DBR_OUTPUT_SEQEND(FILE) */
4305
4306/* If defined, C string expressions to be used for the `%R', `%L', `%U', and
4307 `%I' options of `asm_fprintf' (see `final.c'). These are useful when a
4308 single `md' file must support multiple assembler formats. In that case, the
4309 various `tm.h' files can define these macros differently.
4310
4311 USER_LABEL_PREFIX is defined in svr4.h. */
4312#define REGISTER_PREFIX ""
4313#define LOCAL_LABEL_PREFIX "."
4314#define USER_LABEL_PREFIX ""
4315#define IMMEDIATE_PREFIX "#"
4316
4317/* If your target supports multiple dialects of assembler language (such as
4318 different opcodes), define this macro as a C expression that gives the
4319 numeric index of the assembler language dialect to use, with zero as the
4320 first variant.
4321
4322 If this macro is defined, you may use `{option0|option1|option2...}'
4323 constructs in the output templates of patterns or in the first argument of
4324 `asm_fprintf'. This construct outputs `option0', `option1' or `option2',
4325 etc., if the value of `ASSEMBLER_DIALECT' is zero, one or two, etc. Any
4326 special characters within these strings retain their usual meaning.
4327
4328 If you do not define this macro, the characters `{', `|' and `}' do not have
4329 any special meaning when used in templates or operands to `asm_fprintf'.
4330
4331 Define the macros `REGISTER_PREFIX', `LOCAL_LABEL_PREFIX',
4332 `USER_LABEL_PREFIX' and `IMMEDIATE_PREFIX' if you can express the variations
4333 in assemble language syntax with that mechanism. Define `ASSEMBLER_DIALECT'
4334 and use the `{option0|option1}' syntax if the syntax variant are larger and
4335 involve such things as different opcodes or operand order. */
4336/* #define ASSEMBLER_DIALECT */
4337
4338/* A C expression to output to STREAM some assembler code which will push hard
4339 register number REGNO onto the stack. The code need not be optimal, since
4340 this macro is used only when profiling. */
4341#define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
4342 fprintf (STREAM, "\tpush %d\n", REGNO)
4343
4344/* A C expression to output to STREAM some assembler code which will pop hard
4345 register number REGNO off of the stack. The code need not be optimal, since
4346 this macro is used only when profiling. */
4347#define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
4348 fprintf (STREAM, "\tpop %d\n", REGNO)
4349
4350\f
4351/* Output of dispatch tables. */
4352
4353/* This port does not use the ASM_OUTPUT_ADDR_VEC_ELT macro, because
4354 this could cause label alignment to appear between the 'br' and the table,
4355 which would be bad. Instead, it controls the output of the table
4356 itself. */
4357#define ASM_OUTPUT_ADDR_VEC(LABEL, BODY) \
c6243b4c 4358 xstormy16_output_addr_vec (file, LABEL, BODY)
4b58290f
GK
4359
4360/* Alignment for ADDR_VECs is the same as for code. */
4361#define ADDR_VEC_ALIGN(ADDR_VEC) 1
4362
4363\f
4364/* Assembler Commands for Exception Regions. */
4365
4366/* A C expression to output text to mark the start of an exception region.
4367
4368 This macro need not be defined on most platforms. */
4369/* #define ASM_OUTPUT_EH_REGION_BEG() */
4370
4371/* A C expression to output text to mark the end of an exception region.
4372
4373 This macro need not be defined on most platforms. */
4374/* #define ASM_OUTPUT_EH_REGION_END() */
4375
4b58290f
GK
4376/* A C expression that is nonzero if the normal exception table output should
4377 be omitted.
4378
4379 This macro need not be defined on most platforms. */
4380/* #define OMIT_EH_TABLE() */
4381
4382/* Alternate runtime support for looking up an exception at runtime and finding
4383 the associated handler, if the default method won't work.
4384
4385 This macro need not be defined on most platforms. */
4386/* #define EH_TABLE_LOOKUP() */
4387
4388/* A C expression that decides whether or not the current function needs to
4389 have a function unwinder generated for it. See the file `except.c' for
4390 details on when to define this, and how. */
4391/* #define DOESNT_NEED_UNWINDER */
4392
4393/* An rtx used to mask the return address found via RETURN_ADDR_RTX, so that it
4394 does not contain any extraneous set bits in it. */
4395/* #define MASK_RETURN_ADDR */
4396
4397/* Define this macro to 0 if your target supports DWARF 2 frame unwind
4398 information, but it does not yet work with exception handling. Otherwise,
4399 if your target supports this information (if it defines
4400 `INCOMING_RETURN_ADDR_RTX' and either `UNALIGNED_INT_ASM_OP' or
4401 `OBJECT_FORMAT_ELF'), GCC will provide a default definition of 1.
4402
4403 If this macro is defined to 1, the DWARF 2 unwinder will be the default
4404 exception handling mechanism; otherwise, setjmp/longjmp will be used by
4405 default.
4406
4407 If this macro is defined to anything, the DWARF 2 unwinder will be used
4408 instead of inline unwinders and __unwind_function in the non-setjmp case. */
e27e731d 4409#define DWARF2_UNWIND_INFO 0
4b58290f 4410
9defc9b7
RH
4411/* Don't use __builtin_setjmp for unwinding, since it's tricky to get
4412 at the high 16 bits of an address. */
4413#define DONT_USE_BUILTIN_SETJMP
4414#define JMP_BUF_SIZE 8
4b58290f
GK
4415\f
4416/* Assembler Commands for Alignment. */
4417
4418/* The alignment (log base 2) to put in front of LABEL, which follows
4419 a BARRIER.
4420
4421 This macro need not be defined if you don't want any special alignment to be
4422 done at such a time. Most machine descriptions do not currently define the
4423 macro. */
4424/* #define LABEL_ALIGN_AFTER_BARRIER(LABEL) */
4425
4426/* The desired alignment for the location counter at the beginning
4427 of a loop.
4428
4429 This macro need not be defined if you don't want any special alignment to be
4430 done at such a time. Most machine descriptions do not currently define the
4431 macro. */
4432/* #define LOOP_ALIGN(LABEL) */
4433
4434/* A C statement to output to the stdio stream STREAM an assembler instruction
4435 to advance the location counter by NBYTES bytes. Those bytes should be zero
4436 when loaded. NBYTES will be a C expression of type `int'.
4437
4438 Defined in elfos.h. */
4439/* #define ASM_OUTPUT_SKIP(STREAM, NBYTES) */
4440
4441/* Define this macro if `ASM_OUTPUT_SKIP' should not be used in the text
4442 section because it fails put zeros in the bytes that are skipped. This is
4443 true on many Unix systems, where the pseudo-op to skip bytes produces no-op
4444 instructions rather than zeros when used in the text section. */
4445/* #define ASM_NO_SKIP_IN_TEXT */
4446
4447/* A C statement to output to the stdio stream STREAM an assembler command to
4448 advance the location counter to a multiple of 2 to the POWER bytes. POWER
4449 will be a C expression of type `int'. */
4450#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
4451 fprintf ((STREAM), "\t.p2align %d\n", (POWER))
4452
4453\f
4454/* Macros Affecting all Debug Formats. */
4455
4b58290f
GK
4456/* A C expression that returns the integer offset value for an automatic
4457 variable having address X (an RTL expression). The default computation
4458 assumes that X is based on the frame-pointer and gives the offset from the
4459 frame-pointer. This is required for targets that produce debugging output
4460 for DBX or COFF-style debugging output for SDB and allow the frame-pointer
4461 to be eliminated when the `-g' options is used. */
4462/* #define DEBUGGER_AUTO_OFFSET(X) */
4463
4464/* A C expression that returns the integer offset value for an argument having
4465 address X (an RTL expression). The nominal offset is OFFSET. */
4466/* #define DEBUGGER_ARG_OFFSET(OFFSET, X) */
4467
4468/* A C expression that returns the type of debugging output GNU CC produces
4469 when the user specifies `-g' or `-ggdb'. Define this if you have arranged
4470 for GNU CC to support more than one format of debugging output. Currently,
4471 the allowable values are `DBX_DEBUG', `SDB_DEBUG', `DWARF_DEBUG',
4472 `DWARF2_DEBUG', and `XCOFF_DEBUG'.
4473
4474 The value of this macro only affects the default debugging output; the user
4475 can always get a specific type of output by using `-gstabs', `-gcoff',
4476 `-gdwarf-1', `-gdwarf-2', or `-gxcoff'.
4477
4478 Defined in svr4.h. */
4479#undef PREFERRED_DEBUGGING_TYPE
4480#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
4481
4482\f
4483/* Specific Options for DBX Output. */
4484
4485/* Define this macro if GNU CC should produce debugging output for DBX in
4486 response to the `-g' option.
4487
4488 Defined in svr4.h. */
4489/* #define DBX_DEBUGGING_INFO */
4490
4491/* Define this macro if GNU CC should produce XCOFF format debugging output in
4492 response to the `-g' option. This is a variant of DBX format. */
4493/* #define XCOFF_DEBUGGING_INFO */
4494
4495/* Define this macro to control whether GNU CC should by default generate GDB's
4496 extended version of DBX debugging information (assuming DBX-format debugging
4497 information is enabled at all). If you don't define the macro, the default
4498 is 1: always generate the extended information if there is any occasion to. */
4499/* #define DEFAULT_GDB_EXTENSIONS */
4500
4501/* Define this macro if all `.stabs' commands should be output while in the
4502 text section. */
4503/* #define DEBUG_SYMS_TEXT */
4504
4505/* A C string constant naming the assembler pseudo op to use instead of
4506 `.stabs' to define an ordinary debugging symbol. If you don't define this
4507 macro, `.stabs' is used. This macro applies only to DBX debugging
4508 information format. */
4509/* #define ASM_STABS_OP */
4510
4511/* A C string constant naming the assembler pseudo op to use instead of
4512 `.stabd' to define a debugging symbol whose value is the current location.
4513 If you don't define this macro, `.stabd' is used. This macro applies only
4514 to DBX debugging information format. */
4515/* #define ASM_STABD_OP */
4516
4517/* A C string constant naming the assembler pseudo op to use instead of
4518 `.stabn' to define a debugging symbol with no name. If you don't define
4519 this macro, `.stabn' is used. This macro applies only to DBX debugging
4520 information format. */
4521/* #define ASM_STABN_OP */
4522
4523/* Define this macro if DBX on your system does not support the construct
4524 `xsTAGNAME'. On some systems, this construct is used to describe a forward
4525 reference to a structure named TAGNAME. On other systems, this construct is
4526 not supported at all. */
4527/* #define DBX_NO_XREFS */
4528
4529/* A symbol name in DBX-format debugging information is normally continued
4530 (split into two separate `.stabs' directives) when it exceeds a certain
4531 length (by default, 80 characters). On some operating systems, DBX requires
4532 this splitting; on others, splitting must not be done. You can inhibit
4533 splitting by defining this macro with the value zero. You can override the
4534 default splitting-length by defining this macro as an expression for the
4535 length you desire. */
4536/* #define DBX_CONTIN_LENGTH */
4537
4538/* Normally continuation is indicated by adding a `\' character to the end of a
4539 `.stabs' string when a continuation follows. To use a different character
4540 instead, define this macro as a character constant for the character you
4541 want to use. Do not define this macro if backslash is correct for your
4542 system. */
4543/* #define DBX_CONTIN_CHAR */
4544
4545/* Define this macro if it is necessary to go to the data section before
4546 outputting the `.stabs' pseudo-op for a non-global static variable. */
4547/* #define DBX_STATIC_STAB_DATA_SECTION */
4548
4549/* The value to use in the "code" field of the `.stabs' directive for a
4550 typedef. The default is `N_LSYM'. */
4551/* #define DBX_TYPE_DECL_STABS_CODE */
4552
4553/* The value to use in the "code" field of the `.stabs' directive for a static
4554 variable located in the text section. DBX format does not provide any
4555 "right" way to do this. The default is `N_FUN'. */
4556/* #define DBX_STATIC_CONST_VAR_CODE */
4557
4558/* The value to use in the "code" field of the `.stabs' directive for a
4559 parameter passed in registers. DBX format does not provide any "right" way
4560 to do this. The default is `N_RSYM'. */
4561/* #define DBX_REGPARM_STABS_CODE */
4562
4563/* The letter to use in DBX symbol data to identify a symbol as a parameter
4564 passed in registers. DBX format does not customarily provide any way to do
4565 this. The default is `'P''. */
4566/* #define DBX_REGPARM_STABS_LETTER */
4567
4568/* The letter to use in DBX symbol data to identify a symbol as a stack
4569 parameter. The default is `'p''. */
4570/* #define DBX_MEMPARM_STABS_LETTER */
4571
4572/* Define this macro if the DBX information for a function and its arguments
4573 should precede the assembler code for the function. Normally, in DBX
4574 format, the debugging information entirely follows the assembler code.
4575
4576 Defined in svr4.h. */
4577/* #define DBX_FUNCTION_FIRST */
4578
4579/* Define this macro if the `N_LBRAC' symbol for a block should precede the
4580 debugging information for variables and functions defined in that block.
4581 Normally, in DBX format, the `N_LBRAC' symbol comes first. */
4582/* #define DBX_LBRAC_FIRST */
4583
4584/* Define this macro if the value of a symbol describing the scope of a block
4585 (`N_LBRAC' or `N_RBRAC') should be relative to the start of the enclosing
4586 function. Normally, GNU C uses an absolute address.
4587
4588 Defined in svr4.h. */
4589/* #define DBX_BLOCKS_FUNCTION_RELATIVE */
4590
4591/* Define this macro if GNU C should generate `N_BINCL' and `N_EINCL'
4592 stabs for included header files, as on Sun systems. This macro
4593 also directs GNU C to output a type number as a pair of a file
4594 number and a type number within the file. Normally, GNU C does not
4595 generate `N_BINCL' or `N_EINCL' stabs, and it outputs a single
4596 number for a type number. */
4597/* #define DBX_USE_BINCL */
4598
4599\f
4600/* Open ended Hooks for DBX Output. */
4601
4602/* Define this macro to say how to output to STREAM the debugging information
4603 for the start of a scope level for variable names. The argument NAME is the
4604 name of an assembler symbol (for use with `assemble_name') whose value is
4605 the address where the scope begins. */
4606/* #define DBX_OUTPUT_LBRAC(STREAM, NAME) */
4607
4608/* Like `DBX_OUTPUT_LBRAC', but for the end of a scope level. */
4609/* #define DBX_OUTPUT_RBRAC(STREAM, NAME) */
4610
4611/* Define this macro if the target machine requires special handling to output
4612 an enumeration type. The definition should be a C statement (sans
4613 semicolon) to output the appropriate information to STREAM for the type
4614 TYPE. */
4615/* #define DBX_OUTPUT_ENUM(STREAM, TYPE) */
4616
4617/* Define this macro if the target machine requires special output at the end
4618 of the debugging information for a function. The definition should be a C
4619 statement (sans semicolon) to output the appropriate information to STREAM.
4620 FUNCTION is the `FUNCTION_DECL' node for the function. */
4621/* #define DBX_OUTPUT_FUNCTION_END(STREAM, FUNCTION) */
4622
4623/* Define this macro if you need to control the order of output of the standard
4624 data types at the beginning of compilation. The argument SYMS is a `tree'
4625 which is a chain of all the predefined global symbols, including names of
4626 data types.
4627
4628 Normally, DBX output starts with definitions of the types for integers and
4629 characters, followed by all the other predefined types of the particular
4630 language in no particular order.
4631
4632 On some machines, it is necessary to output different particular types
4633 first. To do this, define `DBX_OUTPUT_STANDARD_TYPES' to output those
4634 symbols in the necessary order. Any predefined types that you don't
4635 explicitly output will be output afterward in no particular order.
4636
4637 Be careful not to define this macro so that it works only for C. There are
4638 no global variables to access most of the built-in types, because another
4639 language may have another set of types. The way to output a particular type
4640 is to look through SYMS to see if you can find it. Here is an example:
4641
4642 {
4643 tree decl;
4644 for (decl = syms; decl; decl = TREE_CHAIN (decl))
4645 if (!strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)),
4646 "long int"))
4647 dbxout_symbol (decl);
4648 ...
4649 }
4650
4651 This does nothing if the expected type does not exist.
4652
4653 See the function `init_decl_processing' in `c-decl.c' to find the names to
4654 use for all the built-in C types. */
4655/* #define DBX_OUTPUT_STANDARD_TYPES(SYMS) */
4656
4657/* Some stabs encapsulation formats (in particular ECOFF), cannot
4658 handle the `.stabs "",N_FUN,,0,0,Lscope-function-1' gdb dbx
f710504c 4659 extension construct. On those machines, define this macro to turn
4b58290f
GK
4660 this feature off without disturbing the rest of the gdb extensions. */
4661/* #define NO_DBX_FUNCTION_END */
4662
4663\f
4664/* File names in DBX format. */
4665
4666/* Define this if DBX wants to have the current directory recorded in each
4667 object file.
4668
4669 Note that the working directory is always recorded if GDB extensions are
4670 enabled. */
4671/* #define DBX_WORKING_DIRECTORY */
4672
4673/* A C statement to output DBX debugging information to the stdio stream STREAM
4674 which indicates that file NAME is the main source file--the file specified
4675 as the input file for compilation. This macro is called only once, at the
4676 beginning of compilation.
4677
4678 This macro need not be defined if the standard form of output for DBX
4679 debugging information is appropriate.
4680
4681 Defined in svr4.h. */
4682/* #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME) */
4683
4684/* A C statement to output DBX debugging information to the stdio stream STREAM
4685 which indicates that the current directory during compilation is named NAME.
4686
4687 This macro need not be defined if the standard form of output for DBX
4688 debugging information is appropriate. */
4689/* #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(STREAM, NAME) */
4690
4691/* A C statement to output DBX debugging information at the end of compilation
4692 of the main source file NAME.
4693
4694 If you don't define this macro, nothing special is output at the end of
4695 compilation, which is correct for most machines. */
4696/* #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(STREAM, NAME) */
4697
4698/* A C statement to output DBX debugging information to the stdio stream STREAM
4699 which indicates that file NAME is the current source file. This output is
4700 generated each time input shifts to a different source file as a result of
4701 `#include', the end of an included file, or a `#line' command.
4702
4703 This macro need not be defined if the standard form of output for DBX
4704 debugging information is appropriate. */
4705/* #define DBX_OUTPUT_SOURCE_FILENAME(STREAM, NAME) */
4706
4707\f
4708/* Macros for SDB and Dwarf Output. */
4709
4710/* Define this macro if GNU CC should produce COFF-style debugging output for
4711 SDB in response to the `-g' option. */
4712/* #define SDB_DEBUGGING_INFO */
4713
4714/* Define this macro if GNU CC should produce dwarf format debugging output in
4715 response to the `-g' option.
4716
4717 Defined in svr4.h. */
4718/* #define DWARF_DEBUGGING_INFO */
4719
4720/* Define this macro if GNU CC should produce dwarf version 2 format debugging
4721 output in response to the `-g' option.
4722
4723 To support optional call frame debugging information, you must also define
4724 `INCOMING_RETURN_ADDR_RTX' and either set `RTX_FRAME_RELATED_P' on the
4725 prologue insns if you use RTL for the prologue, or call `dwarf2out_def_cfa'
41441dc7
NB
4726 and `dwarf2out_reg_save' as appropriate from `TARGET_ASM_FUNCTION_PROLOGUE'
4727 if you don't.
4b58290f
GK
4728
4729 Defined in svr4.h. */
4730/* #define DWARF2_DEBUGGING_INFO */
4731
4732/* Define this macro if GNU CC should produce dwarf version 2-style
4733 line numbers. This usually requires extending the assembler to
4734 support them, and #defining DWARF2_LINE_MIN_INSN_LENGTH in the
4735 assembler configuration header files. */
4736/* #define DWARF2_ASM_LINE_DEBUG_INFO 1 */
4737
4738/* Define this macro if addresses in Dwarf 2 debugging info should not
4739 be the same size as pointers on the target architecture. The
4740 macro's value should be the size, in bytes, to use for addresses in
4741 the debugging info.
4742
4743 Some architectures use word addresses to refer to code locations,
4744 but Dwarf 2 info always uses byte addresses. On such machines,
4745 Dwarf 2 addresses need to be larger than the architecture's
4746 pointers. */
4747#define DWARF2_ADDR_SIZE 4
4748
4749/* Define these macros to override the assembler syntax for the special SDB
4750 assembler directives. See `sdbout.c' for a list of these macros and their
4751 arguments. If the standard syntax is used, you need not define them
4752 yourself. */
4753/* #define PUT_SDB_... */
4754
4755/* Some assemblers do not support a semicolon as a delimiter, even between SDB
4756 assembler directives. In that case, define this macro to be the delimiter
4757 to use (usually `\n'). It is not necessary to define a new set of
4758 `PUT_SDB_OP' macros if this is the only change required. */
4759/* #define SDB_DELIM */
4760
4761/* Define this macro to override the usual method of constructing a dummy name
4762 for anonymous structure and union types. See `sdbout.c' for more
4763 information. */
4764/* #define SDB_GENERATE_FAKE */
4765
4766/* Define this macro to allow references to unknown structure, union, or
4767 enumeration tags to be emitted. Standard COFF does not allow handling of
4768 unknown references, MIPS ECOFF has support for it. */
4769/* #define SDB_ALLOW_UNKNOWN_REFERENCES */
4770
4771/* Define this macro to allow references to structure, union, or enumeration
4772 tags that have not yet been seen to be handled. Some assemblers choke if
4773 forward tags are used, while some require it. */
4774/* #define SDB_ALLOW_FORWARD_REFERENCES */
4775
4776\f
4777/* Miscellaneous Parameters. */
4778
4779/* Define REAL_ARITHMETIC to use a software emulator for the target floating
4780 point mode. Otherwise the host floating point mode is used. */
4781#define REAL_ARITHMETIC
4782
4783/* Define this if you have defined special-purpose predicates in the file
4784 `MACHINE.c'. This macro is called within an initializer of an array of
4785 structures. The first field in the structure is the name of a predicate and
4786 the second field is an array of rtl codes. For each predicate, list all rtl
4787 codes that can be in expressions matched by the predicate. The list should
4788 have a trailing comma. Here is an example of two entries in the list for a
4789 typical RISC machine:
4790
4791 #define PREDICATE_CODES \
4792 {"gen_reg_rtx_operand", {SUBREG, REG}}, \
4793 {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}},
4794
4795 Defining this macro does not affect the generated code (however, incorrect
4796 definitions that omit an rtl code that may be matched by the predicate can
4797 cause the compiler to malfunction). Instead, it allows the table built by
4798 `genrecog' to be more compact and efficient, thus speeding up the compiler.
4799 The most important predicates to include in the list specified by this macro
4800 are thoses used in the most insn patterns. */
4801#define PREDICATE_CODES \
4802 {"shift_operator", {ASHIFT, ASHIFTRT, LSHIFTRT }}, \
4803 {"equality_operator", {EQ, NE }}, \
4804 {"inequality_operator", {GE, GT, LE, LT, GEU, GTU, LEU, LTU }}, \
c6243b4c 4805 {"xstormy16_ineqsi_operator", {LT, GE, LTU, GEU }},
4b58290f
GK
4806
4807/* An alias for a machine mode name. This is the machine mode that elements of
4808 a jump-table should have. */
4809#define CASE_VECTOR_MODE SImode
4810
4811/* Define as C expression which evaluates to nonzero if the tablejump
4812 instruction expects the table to contain offsets from the address of the
4813 table.
4814 Do not define this if the table should contain absolute addresses. */
4815/* #define CASE_VECTOR_PC_RELATIVE 1 */
4816
4817/* Define this if control falls through a `case' insn when the index value is
4818 out of range. This means the specified default-label is actually ignored by
4819 the `case' insn proper. */
4820/* #define CASE_DROPS_THROUGH */
4821
4822/* Define this to be the smallest number of different values for which it is
4823 best to use a jump-table instead of a tree of conditional branches. The
4824 default is four for machines with a `casesi' instruction and five otherwise.
4825 This is best for most machines. */
4826/* #define CASE_VALUES_THRESHOLD */
4827
4828/* Define this macro if operations between registers with integral mode smaller
4829 than a word are always performed on the entire register. Most RISC machines
4830 have this property and most CISC machines do not. */
4831#define WORD_REGISTER_OPERATIONS
4832
4833/* Define this macro to be a C expression indicating when insns that read
4834 memory in MODE, an integral mode narrower than a word, set the bits outside
4835 of MODE to be either the sign-extension or the zero-extension of the data
4836 read. Return `SIGN_EXTEND' for values of MODE for which the insn
4837 sign-extends, `ZERO_EXTEND' for which it zero-extends, and `NIL' for other
4838 modes.
4839
4840 This macro is not called with MODE non-integral or with a width greater than
4841 or equal to `BITS_PER_WORD', so you may return any value in this case. Do
4842 not define this macro if it would always return `NIL'. On machines where
4843 this macro is defined, you will normally define it as the constant
4844 `SIGN_EXTEND' or `ZERO_EXTEND'. */
4845#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
4846
4847/* Define if loading short immediate values into registers sign extends. */
4848/* #define SHORT_IMMEDIATES_SIGN_EXTEND */
4849
4850/* An alias for a tree code that should be used by default for conversion of
4851 floating point values to fixed point. Normally, `FIX_ROUND_EXPR' is used. */
4852/* #define IMPLICIT_FIX_EXPR */
4853
4854/* Define this macro if the same instructions that convert a floating point
4855 number to a signed fixed point number also convert validly to an unsigned
4856 one. */
4857/* #define FIXUNS_TRUNC_LIKE_FIX_TRUNC */
4858
4859/* An alias for a tree code that is the easiest kind of division to compile
4860 code for in the general case. It may be `TRUNC_DIV_EXPR', `FLOOR_DIV_EXPR',
4861 `CEIL_DIV_EXPR' or `ROUND_DIV_EXPR'. These four division operators differ
4862 in how they round the result to an integer. `EASY_DIV_EXPR' is used when it
4863 is permissible to use any of those kinds of division and the choice should
4864 be made on the basis of efficiency. */
4865#define EASY_DIV_EXPR TRUNC_DIV_EXPR
4866
4867/* The maximum number of bytes that a single instruction can move quickly from
4868 memory to memory. */
4869#define MOVE_MAX 2
4870
4871/* The maximum number of bytes that a single instruction can move quickly from
4872 memory to memory. If this is undefined, the default is `MOVE_MAX'.
4873 Otherwise, it is the constant value that is the largest value that
4874 `MOVE_MAX' can have at run-time. */
4875/* #define MAX_MOVE_MAX */
4876
4877/* A C expression that is nonzero if on this machine the number of bits
4878 actually used for the count of a shift operation is equal to the number of
4879 bits needed to represent the size of the object being shifted. When this
4880 macro is non-zero, the compiler will assume that it is safe to omit a
4881 sign-extend, zero-extend, and certain bitwise `and' instructions that
4882 truncates the count of a shift operation. On machines that have
4883 instructions that act on bitfields at variable positions, which may include
4884 `bit test' instructions, a nonzero `SHIFT_COUNT_TRUNCATED' also enables
4885 deletion of truncations of the values that serve as arguments to bitfield
4886 instructions.
4887
4888 If both types of instructions truncate the count (for shifts) and position
4889 (for bitfield operations), or if no variable-position bitfield instructions
4890 exist, you should define this macro.
4891
4892 However, on some machines, such as the 80386 and the 680x0, truncation only
4893 applies to shift operations and not the (real or pretended) bitfield
4894 operations. Define `SHIFT_COUNT_TRUNCATED' to be zero on such machines.
4895 Instead, add patterns to the `md' file that include the implied truncation
4896 of the shift instructions.
4897
4898 You need not define this macro if it would always have the value of zero. */
4899#define SHIFT_COUNT_TRUNCATED 1
4900
4901/* A C expression which is nonzero if on this machine it is safe to "convert"
4902 an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
4903 than INPREC) by merely operating on it as if it had only OUTPREC bits.
4904
4905 On many machines, this expression can be 1.
4906
4907 When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for
4908 which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the
4909 case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve
4910 things. */
4911#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
4912
4913/* A C expression describing the value returned by a comparison operator with
4914 an integral mode and stored by a store-flag instruction (`sCOND') when the
4915 condition is true. This description must apply to *all* the `sCOND'
4916 patterns and all the comparison operators whose results have a `MODE_INT'
4917 mode.
4918
4919 A value of 1 or -1 means that the instruction implementing the comparison
4920 operator returns exactly 1 or -1 when the comparison is true and 0 when the
4921 comparison is false. Otherwise, the value indicates which bits of the
4922 result are guaranteed to be 1 when the comparison is true. This value is
4923 interpreted in the mode of the comparison operation, which is given by the
4924 mode of the first operand in the `sCOND' pattern. Either the low bit or the
4925 sign bit of `STORE_FLAG_VALUE' be on. Presently, only those bits are used
4926 by the compiler.
4927
4928 If `STORE_FLAG_VALUE' is neither 1 or -1, the compiler will generate code
4929 that depends only on the specified bits. It can also replace comparison
4930 operators with equivalent operations if they cause the required bits to be
4931 set, even if the remaining bits are undefined. For example, on a machine
4932 whose comparison operators return an `SImode' value and where
4933 `STORE_FLAG_VALUE' is defined as `0x80000000', saying that just the sign bit
4934 is relevant, the expression
4935
4936 (ne:SI (and:SI X (const_int POWER-OF-2)) (const_int 0))
4937
4938 can be converted to
4939
4940 (ashift:SI X (const_int N))
4941
4942 where N is the appropriate shift count to move the bit being tested into the
4943 sign bit.
4944
4945 There is no way to describe a machine that always sets the low-order bit for
4946 a true value, but does not guarantee the value of any other bits, but we do
4947 not know of any machine that has such an instruction. If you are trying to
4948 port GNU CC to such a machine, include an instruction to perform a
4949 logical-and of the result with 1 in the pattern for the comparison operators
4950 and let us know.
4951
4952 Often, a machine will have multiple instructions that obtain a value from a
4953 comparison (or the condition codes). Here are rules to guide the choice of
4954 value for `STORE_FLAG_VALUE', and hence the instructions to be used:
4955
4956 * Use the shortest sequence that yields a valid definition for
4957 `STORE_FLAG_VALUE'. It is more efficient for the compiler to
4958 "normalize" the value (convert it to, e.g., 1 or 0) than for
4959 the comparison operators to do so because there may be
4960 opportunities to combine the normalization with other
4961 operations.
4962
4963 * For equal-length sequences, use a value of 1 or -1, with -1
4964 being slightly preferred on machines with expensive jumps and
4965 1 preferred on other machines.
4966
4967 * As a second choice, choose a value of `0x80000001' if
4968 instructions exist that set both the sign and low-order bits
4969 but do not define the others.
4970
4971 * Otherwise, use a value of `0x80000000'.
4972
4973 Many machines can produce both the value chosen for `STORE_FLAG_VALUE' and
4974 its negation in the same number of instructions. On those machines, you
4975 should also define a pattern for those cases, e.g., one matching
4976
4977 (set A (neg:M (ne:M B C)))
4978
4979 Some machines can also perform `and' or `plus' operations on condition code
4980 values with less instructions than the corresponding `sCOND' insn followed
4981 by `and' or `plus'. On those machines, define the appropriate patterns.
4982 Use the names `incscc' and `decscc', respectively, for the the patterns
4983 which perform `plus' or `minus' operations on condition code values. See
4984 `rs6000.md' for some examples. The GNU Superoptizer can be used to find
4985 such instruction sequences on other machines.
4986
4987 You need not define `STORE_FLAG_VALUE' if the machine has no store-flag
4988 instructions. */
4989/* #define STORE_FLAG_VALUE */
4990
4991/* A C expression that gives a non-zero floating point value that is returned
4992 when comparison operators with floating-point results are true. Define this
4993 macro on machine that have comparison operations that return floating-point
4994 values. If there are no such operations, do not define this macro. */
4995/* #define FLOAT_STORE_FLAG_VALUE */
4996
4997/* An alias for the machine mode for pointers. On most machines, define this
4998 to be the integer mode corresponding to the width of a hardware pointer;
4999 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines
5000 you must define this to be one of the partial integer modes, such as
5001 `PSImode'.
5002
5003 The width of `Pmode' must be at least as large as the value of
5004 `POINTER_SIZE'. If it is not equal, you must define the macro
5005 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */
5006#define Pmode HImode
5007
5008/* An alias for the machine mode used for memory references to functions being
5009 called, in `call' RTL expressions. On most machines this should be
5010 `QImode'. */
5011#define FUNCTION_MODE HImode
5012
5013/* A C expression for the maximum number of instructions above which the
5014 function DECL should not be inlined. DECL is a `FUNCTION_DECL' node.
5015
5016 The default definition of this macro is 64 plus 8 times the number of
5017 arguments that the function accepts. Some people think a larger threshold
5018 should be used on RISC machines. */
5019/* #define INTEGRATE_THRESHOLD(DECL) */
5020
5021/* Define this if the preprocessor should ignore `#sccs' directives and print
5022 no error message.
5023
5024 Defined in svr4.h. */
5025/* #define SCCS_DIRECTIVE */
5026
5027/* Define this macro if the system header files support C++ as well as C. This
5028 macro inhibits the usual method of using system header files in C++, which
5029 is to pretend that the file's contents are enclosed in `extern "C" {...}'. */
5030#define NO_IMPLICIT_EXTERN_C
5031
5032/* Define this macro if you want to implement any pragmas. If defined, it
5033 should be a C expression to be executed when #pragma is seen. The
5034 argument GETC is a function which will return the next character in the
5035 input stream, or EOF if no characters are left. The argument UNGETC is
5036 a function which will push a character back into the input stream. The
5037 argument NAME is the word following #pragma in the input stream. The input
5038 stream pointer will be pointing just beyond the end of this word. The
5039 expression should return true if it handled the pragma, false otherwise.
5040 The input stream should be left undistrubed if false is returned, otherwise
5041 it should be pointing at the next character after the end of the pragma.
5042 Any characters left between the end of the pragma and the end of the line will
5043 be ignored.
5044
5045 It is generally a bad idea to implement new uses of `#pragma'. The only
5046 reason to define this macro is for compatibility with other compilers that
5047 do support `#pragma' for the sake of any user programs which already use it. */
5048/* #define HANDLE_PRAGMA(GETC, UNGETC, NAME) handle_pragma (GETC, UNGETC, NAME) */
5049
5050/* Define this macro to handle System V style pragmas: #pragma pack and
5051 #pragma weak. Note, #pragma weak will only be supported if SUPPORT_WEAK is
5052 defined.
5053
5054 Defined in svr4.h. */
5055#define HANDLE_SYSV_PRAGMA
5056
5057/* Define this macro if you want to support the Win32 style pragmas
5058 #pragma pack(push,<n>) and #pragma pack(pop). */
5059/* HANDLE_PRAGMA_PACK_PUSH_POP 1 */
5060
4b58290f
GK
5061/* Define this macro to control use of the character `$' in identifier names.
5062 The value should be 0, 1, or 2. 0 means `$' is not allowed by default; 1
5063 means it is allowed by default if `-traditional' is used; 2 means it is
5064 allowed by default provided `-ansi' is not used. 1 is the default; there is
5065 no need to define this macro in that case. */
5066/* #define DOLLARS_IN_IDENTIFIERS */
5067
5068/* Define this macro if the assembler does not accept the character `$' in
5069 label names. By default constructors and destructors in G++ have `$' in the
5070 identifiers. If this macro is defined, `.' is used instead.
5071
5072 Defined in svr4.h. */
5073/* #define NO_DOLLAR_IN_LABEL */
5074
5075/* Define this macro if the assembler does not accept the character `.' in
5076 label names. By default constructors and destructors in G++ have names that
5077 use `.'. If this macro is defined, these names are rewritten to avoid `.'. */
5078/* #define NO_DOT_IN_LABEL */
5079
5080/* Define this macro if the target system expects every program's `main'
5081 function to return a standard "success" value by default (if no other value
5082 is explicitly returned).
5083
5084 The definition should be a C statement (sans semicolon) to generate the
5085 appropriate rtl instructions. It is used only when compiling the end of
5086 `main'. */
5087/* #define DEFAULT_MAIN_RETURN */
5088
5089/* Define this if the target system supports the function `atexit' from the
5090 ANSI C standard. If this is not defined, and `INIT_SECTION_ASM_OP' is not
5091 defined, a default `exit' function will be provided to support C++.
5092
5093 Defined by svr4.h */
5094/* #define HAVE_ATEXIT */
5095
5096/* Define this if your `exit' function needs to do something besides calling an
5097 external function `_cleanup' before terminating with `_exit'. The
5098 `EXIT_BODY' macro is only needed if netiher `HAVE_ATEXIT' nor
5099 `INIT_SECTION_ASM_OP' are defined. */
5100/* #define EXIT_BODY */
5101
5102/* Define this macro as a C expression that is nonzero if it is safe for the
5103 delay slot scheduler to place instructions in the delay slot of INSN, even
5104 if they appear to use a resource set or clobbered in INSN. INSN is always a
5105 `jump_insn' or an `insn'; GNU CC knows that every `call_insn' has this
5106 behavior. On machines where some `insn' or `jump_insn' is really a function
5107 call and hence has this behavior, you should define this macro.
5108
5109 You need not define this macro if it would always return zero. */
5110/* #define INSN_SETS_ARE_DELAYED(INSN) */
5111
5112/* Define this macro as a C expression that is nonzero if it is safe for the
5113 delay slot scheduler to place instructions in the delay slot of INSN, even
5114 if they appear to set or clobber a resource referenced in INSN. INSN is
5115 always a `jump_insn' or an `insn'. On machines where some `insn' or
5116 `jump_insn' is really a function call and its operands are registers whose
5117 use is actually in the subroutine it calls, you should define this macro.
5118 Doing so allows the delay slot scheduler to move instructions which copy
5119 arguments into the argument registers into the delay slot of INSN.
5120
5121 You need not define this macro if it would always return zero. */
5122/* #define INSN_REFERENCES_ARE_DELAYED(INSN) */
5123
5124/* In rare cases, correct code generation requires extra machine dependent
5125 processing between the second jump optimization pass and delayed branch
5126 scheduling. On those machines, define this macro as a C statement to act on
5127 the code starting at INSN. */
5128/* #define MACHINE_DEPENDENT_REORG(INSN) */
5129
5130/* Define this macro if in some cases global symbols from one translation unit
5131 may not be bound to undefined symbols in another translation unit without
5132 user intervention. For instance, under Microsoft Windows symbols must be
5133 explicitly imported from shared libraries (DLLs). */
5134/* #define MULTIPLE_SYMBOL_SPACES */
5135
5136/* A C expression for the maximum number of instructions to execute via
5137 conditional execution instructions instead of a branch. A value of
5138 BRANCH_COST+1 is the default if the machine does not use
5139 cc0, and 1 if it does use cc0. */
5140/* #define MAX_CONDITIONAL_EXECUTE */
5141
5142/* A C statement that adds to tree CLOBBERS a set of STRING_CST trees for any
5143 hard regs the port wishes to automatically clobber for all asms. */
5144/* #define MD_ASM_CLOBBERS(CLOBBERS) */
5145
5146/* Indicate how many instructions can be issued at the same time. */
5147/* #define ISSUE_RATE */
5148
5149/* A C statement which is executed by the Haifa scheduler at the beginning of
5150 each block of instructions that are to be scheduled. FILE is either a null
5151 pointer, or a stdio stream to write any debug output to. VERBOSE is the
5152 verbose level provided by -fsched-verbose-<n>. */
5153/* #define MD_SCHED_INIT (FILE, VERBOSE) */
5154
5155/* A C statement which is executed by the Haifa scheduler after it has scheduled
5156 the ready list to allow the machine description to reorder it (for example to
5157 combine two small instructions together on VLIW machines). FILE is either a
5158 null pointer, or a stdio stream to write any debug output to. VERBOSE is the
5159 verbose level provided by -fsched-verbose-=<n>. READY is a pointer to the
5160 ready list of instructions that are ready to be scheduled. N_READY is the
5161 number of elements in the ready list. The scheduler reads the ready list in
5162 reverse order, starting with READY[N_READY-1] and going to READY[0]. CLOCK
5163 is the timer tick of the scheduler. CAN_ISSUE_MORE is an output parameter that
5164 is set to the number of insns that can issue this clock; normally this is just
5165 'issue_rate' */
5166/* #define MD_SCHED_REORDER (FILE, VERBOSE, READY, N_READY, CLOCK, CAN_ISSUE_MORE) */
5167
5168/* A C statement which is executed by the Haifa scheduler after it has scheduled
5169 an insn from the ready list. FILE is either a null pointer, or a stdio stream
5170 to write any debug output to. VERBOSE is the verbose level provided by
5171 -fsched-verbose-<n>. INSN is the instruction that was scheduled. MORE is the
5172 number of instructions that can be issued in the current cycle. This macro
5173 is responsible for updating the value of MORE (typically by (MORE)--). */
5174/* #define MD_SCHED_VARIABLE_ISSUE (FILE, VERBOSE, INSN, MORE) */
5175
5176/* Define this to the largest integer machine mode which can be used for
5177 operations other than load, store and copy operations. You need only define
5178 this macro if the target holds values larger than word_mode in general purpose
5179 registers. Most targets should not define this macro. */
5180/* #define MAX_INTEGER_COMPUTATION_MODE */
5181
5182/* Define this macro as a C string constant for the linker argument to link in the
5183 system math library, or "" if the target does not have a separate math library.
5184 You need only define this macro if the default of "-lm" is wrong. */
5185/* #define MATH_LIBRARY */
5186\f
5187/* Define the information needed to generate branch and scc insns. This is
5188 stored from the compare operation. Note that we can't use "rtx" here
5189 since it hasn't been defined! */
5190
c6243b4c 5191extern struct rtx_def *xstormy16_compare_op0, *xstormy16_compare_op1;
4b58290f 5192
c6243b4c 5193/* End of xstormy16.h */