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28b487d7 | 1 | /*{{{ Comment. */ |
309dd885 NC |
2 | |
3 | /* Definitions of FR30 target. | |
0fd818e7 KH |
4 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 |
5 | Free Software Foundation, Inc. | |
309dd885 NC |
6 | Contributed by Cygnus Solutions. |
7 | ||
7ec022b2 | 8 | This file is part of GCC. |
309dd885 | 9 | |
7ec022b2 | 10 | GCC is free software; you can redistribute it and/or modify |
309dd885 NC |
11 | it under the terms of the GNU General Public License as published by |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
7ec022b2 | 15 | GCC is distributed in the hope that it will be useful, |
309dd885 NC |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
7ec022b2 | 21 | along with GCC; see the file COPYING. If not, write to |
39d14dda KC |
22 | the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
23 | Boston, MA 02110-1301, USA. */ | |
309dd885 | 24 | |
309dd885 | 25 | /*}}}*/ \f |
28b487d7 | 26 | /*{{{ Driver configuration. */ |
309dd885 | 27 | |
d1552d7b | 28 | /* Defined in svr4.h. */ |
309dd885 NC |
29 | #undef SWITCH_TAKES_ARG |
30 | ||
d1552d7b | 31 | /* Defined in svr4.h. */ |
309dd885 NC |
32 | #undef WORD_SWITCH_TAKES_ARG |
33 | ||
34 | /*}}}*/ \f | |
28b487d7 | 35 | /*{{{ Run-time target specifications. */ |
309dd885 NC |
36 | |
37 | #undef ASM_SPEC | |
38 | #define ASM_SPEC "%{v}" | |
39 | ||
40 | /* Define this to be a string constant containing `-D' options to define the | |
41 | predefined macros that identify this machine and system. These macros will | |
ff482c8d | 42 | be predefined unless the `-ansi' option is specified. */ |
309dd885 | 43 | |
0ac3e0c4 NB |
44 | #define TARGET_CPU_CPP_BUILTINS() \ |
45 | do \ | |
46 | { \ | |
47 | builtin_define_std ("fr30"); \ | |
48 | builtin_assert ("machine=fr30"); \ | |
49 | } \ | |
50 | while (0) | |
309dd885 | 51 | |
309dd885 NC |
52 | #define TARGET_VERSION fprintf (stderr, " (fr30)"); |
53 | ||
309dd885 NC |
54 | #define CAN_DEBUG_WITHOUT_FP |
55 | ||
56 | #undef STARTFILE_SPEC | |
57 | #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s" | |
58 | ||
59 | /* Include the OS stub library, so that the code can be simulated. | |
60 | This is not the right way to do this. Ideally this kind of thing | |
61 | should be done in the linker script - but I have not worked out how | |
62 | to specify the location of a linker script in a gcc command line yet... */ | |
63 | #undef ENDFILE_SPEC | |
64 | #define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s" | |
65 | ||
66 | /*}}}*/ \f | |
28b487d7 | 67 | /*{{{ Storage Layout. */ |
309dd885 | 68 | |
309dd885 NC |
69 | #define BITS_BIG_ENDIAN 1 |
70 | ||
309dd885 NC |
71 | #define BYTES_BIG_ENDIAN 1 |
72 | ||
309dd885 NC |
73 | #define WORDS_BIG_ENDIAN 1 |
74 | ||
309dd885 NC |
75 | #define UNITS_PER_WORD 4 |
76 | ||
28b487d7 NC |
77 | #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ |
78 | do \ | |
79 | { \ | |
80 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
81 | && GET_MODE_SIZE (MODE) < 4) \ | |
82 | (MODE) = SImode; \ | |
83 | } \ | |
84 | while (0) | |
309dd885 | 85 | |
309dd885 NC |
86 | #define PARM_BOUNDARY 32 |
87 | ||
309dd885 NC |
88 | #define STACK_BOUNDARY 32 |
89 | ||
309dd885 NC |
90 | #define FUNCTION_BOUNDARY 32 |
91 | ||
309dd885 NC |
92 | #define BIGGEST_ALIGNMENT 32 |
93 | ||
309dd885 NC |
94 | #define DATA_ALIGNMENT(TYPE, ALIGN) \ |
95 | (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
96 | && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ | |
97 | && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) | |
98 | ||
309dd885 NC |
99 | #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ |
100 | (TREE_CODE (EXP) == STRING_CST \ | |
101 | && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) | |
102 | ||
309dd885 NC |
103 | #define STRICT_ALIGNMENT 1 |
104 | ||
d1552d7b | 105 | /* Defined in svr4.h. */ |
309dd885 NC |
106 | #define PCC_BITFIELD_TYPE_MATTERS 1 |
107 | ||
309dd885 | 108 | /*}}}*/ \f |
28b487d7 | 109 | /*{{{ Layout of Source Language Data Types. */ |
309dd885 | 110 | |
309dd885 NC |
111 | #define SHORT_TYPE_SIZE 16 |
112 | #define INT_TYPE_SIZE 32 | |
113 | #define LONG_TYPE_SIZE 32 | |
114 | #define LONG_LONG_TYPE_SIZE 64 | |
115 | #define FLOAT_TYPE_SIZE 32 | |
116 | #define DOUBLE_TYPE_SIZE 64 | |
117 | #define LONG_DOUBLE_TYPE_SIZE 64 | |
118 | ||
309dd885 NC |
119 | #define DEFAULT_SIGNED_CHAR 1 |
120 | ||
309dd885 | 121 | /*}}}*/ \f |
28b487d7 | 122 | /*{{{ REGISTER BASICS. */ |
309dd885 NC |
123 | |
124 | /* Number of hardware registers known to the compiler. They receive numbers 0 | |
125 | through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number | |
126 | really is assigned the number `FIRST_PSEUDO_REGISTER'. */ | |
127 | #define FIRST_PSEUDO_REGISTER 21 | |
128 | ||
129 | /* Fixed register assignments: */ | |
130 | ||
131 | /* Here we do a BAD THING - reserve a register for use by the machine | |
132 | description file. There are too many places in compiler where it | |
133 | assumes that it can issue a branch or jump instruction without | |
134 | providing a scratch register for it, and reload just cannot cope, so | |
135 | we keep a register back for these situations. */ | |
136 | #define COMPILER_SCRATCH_REGISTER 0 | |
137 | ||
138 | /* The register that contains the result of a function call. */ | |
139 | #define RETURN_VALUE_REGNUM 4 | |
140 | ||
141 | /* The first register that can contain the arguments to a function. */ | |
142 | #define FIRST_ARG_REGNUM 4 | |
143 | ||
144 | /* A call-used register that can be used during the function prologue. */ | |
145 | #define PROLOGUE_TMP_REGNUM COMPILER_SCRATCH_REGISTER | |
146 | ||
147 | /* Register numbers used for passing a function's static chain pointer. If | |
148 | register windows are used, the register number as seen by the called | |
149 | function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as | |
150 | seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers | |
151 | are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. | |
152 | ||
153 | The static chain register need not be a fixed register. | |
154 | ||
155 | If the static chain is passed in memory, these macros should not be defined; | |
156 | instead, the next two macros should be defined. */ | |
157 | #define STATIC_CHAIN_REGNUM 12 | |
158 | /* #define STATIC_CHAIN_INCOMING_REGNUM */ | |
159 | ||
160 | /* An FR30 specific hardware register. */ | |
161 | #define ACCUMULATOR_REGNUM 13 | |
162 | ||
163 | /* The register number of the frame pointer register, which is used to access | |
164 | automatic variables in the stack frame. On some machines, the hardware | |
165 | determines which register this is. On other machines, you can choose any | |
166 | register you wish for this purpose. */ | |
167 | #define FRAME_POINTER_REGNUM 14 | |
168 | ||
169 | /* The register number of the stack pointer register, which must also be a | |
170 | fixed register according to `FIXED_REGISTERS'. On most machines, the | |
171 | hardware determines which register this is. */ | |
172 | #define STACK_POINTER_REGNUM 15 | |
173 | ||
174 | /* The following a fake hard registers that describe some of the dedicated | |
175 | registers on the FR30. */ | |
176 | #define CONDITION_CODE_REGNUM 16 | |
177 | #define RETURN_POINTER_REGNUM 17 | |
178 | #define MD_HIGH_REGNUM 18 | |
179 | #define MD_LOW_REGNUM 19 | |
180 | ||
181 | /* An initializer that says which registers are used for fixed purposes all | |
182 | throughout the compiled code and are therefore not available for general | |
183 | allocation. These would include the stack pointer, the frame pointer | |
184 | (except on machines where that can be used as a general register when no | |
185 | frame pointer is needed), the program counter on machines where that is | |
186 | considered one of the addressable registers, and any other numbered register | |
187 | with a standard use. | |
188 | ||
189 | This information is expressed as a sequence of numbers, separated by commas | |
190 | and surrounded by braces. The Nth number is 1 if register N is fixed, 0 | |
191 | otherwise. | |
192 | ||
193 | The table initialized from this macro, and the table initialized by the | |
194 | following one, may be overridden at run time either automatically, by the | |
195 | actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the | |
196 | command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */ | |
197 | #define FIXED_REGISTERS \ | |
198 | { 1, 0, 0, 0, 0, 0, 0, 0, /* 0 - 7 */ \ | |
199 | 0, 0, 0, 0, 0, 0, 0, 1, /* 8 - 15 */ \ | |
200 | 1, 1, 1, 1, 1 } /* 16 - 20 */ | |
201 | ||
202 | /* XXX - MDL and MDH set as fixed for now - this is until I can get the | |
203 | mul patterns working. */ | |
204 | ||
205 | /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in | |
206 | general) by function calls as well as for fixed registers. This macro | |
207 | therefore identifies the registers that are not available for general | |
208 | allocation of values that must live across function calls. | |
209 | ||
210 | If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically | |
211 | saves it on function entry and restores it on function exit, if the register | |
212 | is used within the function. */ | |
213 | #define CALL_USED_REGISTERS \ | |
214 | { 1, 1, 1, 1, 1, 1, 1, 1, /* 0 - 7 */ \ | |
215 | 0, 0, 0, 0, 1, 1, 0, 1, /* 8 - 15 */ \ | |
216 | 1, 1, 1, 1, 1 } /* 16 - 20 */ | |
217 | ||
218 | /* A C initializer containing the assembler's names for the machine registers, | |
219 | each one as a C string constant. This is what translates register numbers | |
220 | in the compiler into assembler language. */ | |
221 | #define REGISTER_NAMES \ | |
222 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
223 | "r8", "r9", "r10", "r11", "r12", "ac", "fp", "sp", \ | |
224 | "cc", "rp", "mdh", "mdl", "ap" \ | |
225 | } | |
226 | ||
227 | /* If defined, a C initializer for an array of structures containing a name and | |
228 | a register number. This macro defines additional names for hard registers, | |
229 | thus allowing the `asm' option in declarations to refer to registers using | |
230 | alternate names. */ | |
231 | #define ADDITIONAL_REGISTER_NAMES \ | |
232 | { \ | |
233 | {"r13", 13}, {"r14", 14}, {"r15", 15}, {"usp", 15}, {"ps", 16}\ | |
234 | } | |
235 | ||
236 | /*}}}*/ \f | |
28b487d7 | 237 | /*{{{ How Values Fit in Registers. */ |
309dd885 NC |
238 | |
239 | /* A C expression for the number of consecutive hard registers, starting at | |
240 | register number REGNO, required to hold a value of mode MODE. */ | |
241 | ||
242 | #define HARD_REGNO_NREGS(REGNO, MODE) \ | |
243 | ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
244 | ||
245 | /* A C expression that is nonzero if it is permissible to store a value of mode | |
246 | MODE in hard register number REGNO (or in several registers starting with | |
247 | that one). */ | |
248 | ||
249 | #define HARD_REGNO_MODE_OK(REGNO, MODE) 1 | |
250 | ||
251 | /* A C expression that is nonzero if it is desirable to choose register | |
252 | allocation so as to avoid move instructions between a value of mode MODE1 | |
253 | and a value of mode MODE2. | |
254 | ||
255 | If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are | |
256 | ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be | |
257 | zero. */ | |
258 | #define MODES_TIEABLE_P(MODE1, MODE2) 1 | |
259 | ||
309dd885 | 260 | /*}}}*/ \f |
28b487d7 | 261 | /*{{{ Register Classes. */ |
309dd885 NC |
262 | |
263 | /* An enumeral type that must be defined with all the register class names as | |
264 | enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last | |
265 | register class, followed by one more enumeral value, `LIM_REG_CLASSES', | |
266 | which is not a register class but rather tells how many classes there are. | |
267 | ||
268 | Each register class has a number, which is the value of casting the class | |
269 | name to type `int'. The number serves as an index in many of the tables | |
270 | described below. */ | |
271 | enum reg_class | |
272 | { | |
273 | NO_REGS, | |
274 | MULTIPLY_32_REG, /* the MDL register as used by the MULH, MULUH insns */ | |
275 | MULTIPLY_64_REG, /* the MDH,MDL register pair as used by MUL and MULU */ | |
276 | LOW_REGS, /* registers 0 through 7 */ | |
277 | HIGH_REGS, /* registers 8 through 15 */ | |
112cdef5 | 278 | REAL_REGS, /* i.e. all the general hardware registers on the FR30 */ |
309dd885 NC |
279 | ALL_REGS, |
280 | LIM_REG_CLASSES | |
281 | }; | |
282 | ||
283 | #define GENERAL_REGS REAL_REGS | |
284 | #define N_REG_CLASSES ((int) LIM_REG_CLASSES) | |
285 | ||
286 | /* An initializer containing the names of the register classes as C string | |
287 | constants. These names are used in writing some of the debugging dumps. */ | |
288 | #define REG_CLASS_NAMES \ | |
289 | { \ | |
290 | "NO_REGS", \ | |
291 | "MULTIPLY_32_REG", \ | |
292 | "MULTIPLY_64_REG", \ | |
293 | "LOW_REGS", \ | |
294 | "HIGH_REGS", \ | |
295 | "REAL_REGS", \ | |
296 | "ALL_REGS" \ | |
297 | } | |
298 | ||
299 | /* An initializer containing the contents of the register classes, as integers | |
300 | which are bit masks. The Nth integer specifies the contents of class N. | |
301 | The way the integer MASK is interpreted is that register R is in the class | |
302 | if `MASK & (1 << R)' is 1. | |
303 | ||
304 | When the machine has more than 32 registers, an integer does not suffice. | |
305 | Then the integers are replaced by sub-initializers, braced groupings | |
306 | containing several integers. Each sub-initializer must be suitable as an | |
307 | initializer for the type `HARD_REG_SET' which is defined in | |
308 | `hard-reg-set.h'. */ | |
82a9bba5 NC |
309 | #define REG_CLASS_CONTENTS \ |
310 | { \ | |
311 | { 0 }, \ | |
312 | { 1 << MD_LOW_REGNUM }, \ | |
313 | { (1 << MD_LOW_REGNUM) | (1 << MD_HIGH_REGNUM) }, \ | |
314 | { (1 << 8) - 1 }, \ | |
315 | { ((1 << 8) - 1) << 8 }, \ | |
316 | { (1 << CONDITION_CODE_REGNUM) - 1 }, \ | |
317 | { (1 << FIRST_PSEUDO_REGISTER) - 1 } \ | |
309dd885 NC |
318 | } |
319 | ||
320 | /* A C expression whose value is a register class containing hard register | |
321 | REGNO. In general there is more than one such class; choose a class which | |
322 | is "minimal", meaning that no smaller class also contains the register. */ | |
323 | #define REGNO_REG_CLASS(REGNO) \ | |
324 | ( (REGNO) < 8 ? LOW_REGS \ | |
325 | : (REGNO) < CONDITION_CODE_REGNUM ? HIGH_REGS \ | |
326 | : (REGNO) == MD_LOW_REGNUM ? MULTIPLY_32_REG \ | |
327 | : (REGNO) == MD_HIGH_REGNUM ? MULTIPLY_64_REG \ | |
328 | : ALL_REGS) | |
329 | ||
330 | /* A macro whose definition is the name of the class to which a valid base | |
331 | register must belong. A base register is one used in an address which is | |
332 | the register value plus a displacement. */ | |
333 | #define BASE_REG_CLASS REAL_REGS | |
334 | ||
335 | /* A macro whose definition is the name of the class to which a valid index | |
336 | register must belong. An index register is one used in an address where its | |
337 | value is either multiplied by a scale factor or added to another register | |
338 | (as well as added to a displacement). */ | |
339 | #define INDEX_REG_CLASS REAL_REGS | |
340 | ||
341 | /* A C expression which defines the machine-dependent operand constraint | |
342 | letters for register classes. If CHAR is such a letter, the value should be | |
343 | the register class corresponding to it. Otherwise, the value should be | |
344 | `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS', | |
345 | will not be passed to this macro; you do not need to handle it. | |
346 | ||
347 | The following letters are unavailable, due to being used as | |
348 | constraints: | |
349 | '0'..'9' | |
350 | '<', '>' | |
351 | 'E', 'F', 'G', 'H' | |
352 | 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P' | |
353 | 'Q', 'R', 'S', 'T', 'U' | |
354 | 'V', 'X' | |
355 | 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */ | |
356 | ||
357 | #define REG_CLASS_FROM_LETTER(CHAR) \ | |
358 | ( (CHAR) == 'd' ? MULTIPLY_64_REG \ | |
359 | : (CHAR) == 'e' ? MULTIPLY_32_REG \ | |
360 | : (CHAR) == 'h' ? HIGH_REGS \ | |
361 | : (CHAR) == 'l' ? LOW_REGS \ | |
362 | : (CHAR) == 'a' ? ALL_REGS \ | |
363 | : NO_REGS) | |
364 | ||
365 | /* A C expression which is nonzero if register number NUM is suitable for use | |
366 | as a base register in operand addresses. It may be either a suitable hard | |
367 | register or a pseudo register that has been allocated such a hard register. */ | |
368 | #define REGNO_OK_FOR_BASE_P(NUM) 1 | |
369 | ||
370 | /* A C expression which is nonzero if register number NUM is suitable for use | |
371 | as an index register in operand addresses. It may be either a suitable hard | |
372 | register or a pseudo register that has been allocated such a hard register. | |
373 | ||
374 | The difference between an index register and a base register is that the | |
375 | index register may be scaled. If an address involves the sum of two | |
376 | registers, neither one of them scaled, then either one may be labeled the | |
377 | "base" and the other the "index"; but whichever labeling is used must fit | |
378 | the machine's constraints of which registers may serve in each capacity. | |
379 | The compiler will try both labelings, looking for one that is valid, and | |
380 | will reload one or both registers only if neither labeling works. */ | |
381 | #define REGNO_OK_FOR_INDEX_P(NUM) 1 | |
382 | ||
383 | /* A C expression that places additional restrictions on the register class to | |
384 | use when it is necessary to copy value X into a register in class CLASS. | |
385 | The value is a register class; perhaps CLASS, or perhaps another, smaller | |
386 | class. On many machines, the following definition is safe: | |
387 | ||
388 | #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS | |
389 | ||
390 | Sometimes returning a more restrictive class makes better code. For | |
391 | example, on the 68000, when X is an integer constant that is in range for a | |
392 | `moveq' instruction, the value of this macro is always `DATA_REGS' as long | |
393 | as CLASS includes the data registers. Requiring a data register guarantees | |
394 | that a `moveq' will be used. | |
395 | ||
396 | If X is a `const_double', by returning `NO_REGS' you can force X into a | |
397 | memory constant. This is useful on certain machines where immediate | |
398 | floating values cannot be loaded into certain kinds of registers. */ | |
399 | #define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS | |
400 | ||
309dd885 NC |
401 | /* A C expression for the maximum number of consecutive registers of |
402 | class CLASS needed to hold a value of mode MODE. | |
403 | ||
404 | This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value | |
405 | of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of | |
406 | `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS. | |
407 | ||
408 | This macro helps control the handling of multiple-word values in | |
409 | the reload pass. */ | |
410 | #define CLASS_MAX_NREGS(CLASS, MODE) HARD_REGNO_NREGS (0, MODE) | |
411 | ||
309dd885 | 412 | /*}}}*/ \f |
28b487d7 | 413 | /*{{{ CONSTANTS. */ |
309dd885 | 414 | |
309dd885 NC |
415 | /* A C expression that defines the machine-dependent operand constraint letters |
416 | (`I', `J', `K', .. 'P') that specify particular ranges of integer values. | |
417 | If C is one of those letters, the expression should check that VALUE, an | |
418 | integer, is in the appropriate range and return 1 if so, 0 otherwise. If C | |
419 | is not one of those letters, the value should be 0 regardless of VALUE. */ | |
420 | #define CONST_OK_FOR_LETTER_P(VALUE, C) \ | |
421 | ( (C) == 'I' ? IN_RANGE (VALUE, 0, 15) \ | |
422 | : (C) == 'J' ? IN_RANGE (VALUE, -16, -1) \ | |
423 | : (C) == 'K' ? IN_RANGE (VALUE, 16, 31) \ | |
424 | : (C) == 'L' ? IN_RANGE (VALUE, 0, (1 << 8) - 1) \ | |
425 | : (C) == 'M' ? IN_RANGE (VALUE, 0, (1 << 20) - 1) \ | |
426 | : (C) == 'P' ? IN_RANGE (VALUE, -(1 << 8), (1 << 8) - 1) \ | |
427 | : 0) | |
428 | ||
429 | /* A C expression that defines the machine-dependent operand constraint letters | |
430 | (`G', `H') that specify particular ranges of `const_double' values. | |
431 | ||
432 | If C is one of those letters, the expression should check that VALUE, an RTX | |
433 | of code `const_double', is in the appropriate range and return 1 if so, 0 | |
434 | otherwise. If C is not one of those letters, the value should be 0 | |
435 | regardless of VALUE. | |
436 | ||
437 | `const_double' is used for all floating-point constants and for `DImode' | |
438 | fixed-point constants. A given letter can accept either or both kinds of | |
439 | values. It can use `GET_MODE' to distinguish between these kinds. */ | |
440 | #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 0 | |
441 | ||
442 | /* A C expression that defines the optional machine-dependent constraint | |
443 | letters (`Q', `R', `S', `T', `U') that can be used to segregate specific | |
444 | types of operands, usually memory references, for the target machine. | |
445 | Normally this macro will not be defined. If it is required for a particular | |
446 | target machine, it should return 1 if VALUE corresponds to the operand type | |
447 | represented by the constraint letter C. If C is not defined as an extra | |
448 | constraint, the value returned should be 0 regardless of VALUE. | |
449 | ||
450 | For example, on the ROMP, load instructions cannot have their output in r0 | |
451 | if the memory reference contains a symbolic address. Constraint letter `Q' | |
452 | is defined as representing a memory address that does *not* contain a | |
453 | symbolic address. An alternative is specified with a `Q' constraint on the | |
454 | input and `r' on the output. The next alternative specifies `m' on the | |
455 | input and a register class that does not include r0 on the output. */ | |
456 | #define EXTRA_CONSTRAINT(VALUE, C) \ | |
457 | ((C) == 'Q' ? (GET_CODE (VALUE) == MEM && GET_CODE (XEXP (VALUE, 0)) == SYMBOL_REF) : 0) | |
458 | ||
459 | /*}}}*/ \f | |
28b487d7 | 460 | /*{{{ Basic Stack Layout. */ |
309dd885 NC |
461 | |
462 | /* Define this macro if pushing a word onto the stack moves the stack pointer | |
463 | to a smaller address. */ | |
464 | #define STACK_GROWS_DOWNWARD 1 | |
465 | ||
f62c8a5c JJ |
466 | /* Define this to macro non-zero if the addresses of local variable slots |
467 | are at negative offsets from the frame pointer. */ | |
309dd885 NC |
468 | #define FRAME_GROWS_DOWNWARD 1 |
469 | ||
309dd885 NC |
470 | /* Offset from the frame pointer to the first local variable slot to be |
471 | allocated. | |
472 | ||
473 | If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the | |
474 | first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by | |
475 | adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */ | |
476 | /* #define STARTING_FRAME_OFFSET -4 */ | |
477 | #define STARTING_FRAME_OFFSET 0 | |
478 | ||
479 | /* Offset from the stack pointer register to the first location at which | |
480 | outgoing arguments are placed. If not specified, the default value of zero | |
481 | is used. This is the proper value for most machines. | |
482 | ||
483 | If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first | |
484 | location at which outgoing arguments are placed. */ | |
485 | #define STACK_POINTER_OFFSET 0 | |
486 | ||
487 | /* Offset from the argument pointer register to the first argument's address. | |
488 | On some machines it may depend on the data type of the function. | |
489 | ||
490 | If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first | |
491 | argument's address. */ | |
492 | #define FIRST_PARM_OFFSET(FUNDECL) 0 | |
493 | ||
309dd885 NC |
494 | /* A C expression whose value is RTL representing the location of the incoming |
495 | return address at the beginning of any function, before the prologue. This | |
496 | RTL is either a `REG', indicating that the return value is saved in `REG', | |
497 | or a `MEM' representing a location in the stack. | |
498 | ||
499 | You only need to define this macro if you want to support call frame | |
500 | debugging information like that provided by DWARF 2. */ | |
501 | #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM) | |
502 | ||
309dd885 NC |
503 | /*}}}*/ \f |
504 | /*{{{ Register That Address the Stack Frame. */ | |
505 | ||
309dd885 NC |
506 | /* The register number of the arg pointer register, which is used to access the |
507 | function's argument list. On some machines, this is the same as the frame | |
508 | pointer register. On some machines, the hardware determines which register | |
509 | this is. On other machines, you can choose any register you wish for this | |
510 | purpose. If this is not the same register as the frame pointer register, | |
511 | then you must mark it as a fixed register according to `FIXED_REGISTERS', or | |
512 | arrange to be able to eliminate it. */ | |
513 | #define ARG_POINTER_REGNUM 20 | |
514 | ||
309dd885 | 515 | /*}}}*/ \f |
28b487d7 | 516 | /*{{{ Eliminating the Frame Pointer and the Arg Pointer. */ |
309dd885 NC |
517 | |
518 | /* A C expression which is nonzero if a function must have and use a frame | |
519 | pointer. This expression is evaluated in the reload pass. If its value is | |
520 | nonzero the function will have a frame pointer. | |
521 | ||
522 | The expression can in principle examine the current function and decide | |
523 | according to the facts, but on most machines the constant 0 or the constant | |
524 | 1 suffices. Use 0 when the machine allows code to be generated with no | |
525 | frame pointer, and doing so saves some time or space. Use 1 when there is | |
526 | no possible advantage to avoiding a frame pointer. | |
527 | ||
528 | In certain cases, the compiler does not know how to produce valid code | |
529 | without a frame pointer. The compiler recognizes those cases and | |
530 | automatically gives the function a frame pointer regardless of what | |
531 | `FRAME_POINTER_REQUIRED' says. You don't need to worry about them. | |
532 | ||
533 | In a function that does not require a frame pointer, the frame pointer | |
534 | register can be allocated for ordinary usage, unless you mark it as a fixed | |
535 | register. See `FIXED_REGISTERS' for more information. */ | |
536 | /* #define FRAME_POINTER_REQUIRED 0 */ | |
537 | #define FRAME_POINTER_REQUIRED \ | |
538 | (flag_omit_frame_pointer == 0 || current_function_pretend_args_size > 0) | |
539 | ||
309dd885 NC |
540 | /* If defined, this macro specifies a table of register pairs used to eliminate |
541 | unneeded registers that point into the stack frame. If it is not defined, | |
542 | the only elimination attempted by the compiler is to replace references to | |
543 | the frame pointer with references to the stack pointer. | |
544 | ||
545 | The definition of this macro is a list of structure initializations, each of | |
546 | which specifies an original and replacement register. | |
547 | ||
548 | On some machines, the position of the argument pointer is not known until | |
549 | the compilation is completed. In such a case, a separate hard register must | |
550 | be used for the argument pointer. This register can be eliminated by | |
551 | replacing it with either the frame pointer or the argument pointer, | |
552 | depending on whether or not the frame pointer has been eliminated. | |
553 | ||
554 | In this case, you might specify: | |
555 | #define ELIMINABLE_REGS \ | |
556 | {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
557 | {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
558 | {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} | |
559 | ||
560 | Note that the elimination of the argument pointer with the stack pointer is | |
561 | specified first since that is the preferred elimination. */ | |
562 | ||
28b487d7 NC |
563 | #define ELIMINABLE_REGS \ |
564 | { \ | |
565 | {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
566 | {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
567 | {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ | |
309dd885 NC |
568 | } |
569 | ||
9cd10576 | 570 | /* A C expression that returns nonzero if the compiler is allowed to try to |
309dd885 NC |
571 | replace register number FROM with register number TO. This macro |
572 | need only be defined if `ELIMINABLE_REGS' is defined, and will usually be | |
573 | the constant 1, since most of the cases preventing register elimination are | |
574 | things that the compiler already knows about. */ | |
575 | ||
576 | #define CAN_ELIMINATE(FROM, TO) \ | |
577 | ((TO) == FRAME_POINTER_REGNUM || ! frame_pointer_needed) | |
578 | ||
579 | /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the | |
580 | initial difference between the specified pair of registers. This macro must | |
581 | be defined if `ELIMINABLE_REGS' is defined. */ | |
582 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
583 | (OFFSET) = fr30_compute_frame_size (FROM, TO) | |
584 | ||
309dd885 | 585 | /*}}}*/ \f |
28b487d7 | 586 | /*{{{ Passing Function Arguments on the Stack. */ |
309dd885 | 587 | |
309dd885 NC |
588 | /* If defined, the maximum amount of space required for outgoing arguments will |
589 | be computed and placed into the variable | |
590 | `current_function_outgoing_args_size'. No space will be pushed onto the | |
591 | stack for each call; instead, the function prologue should increase the | |
592 | stack frame size by this amount. | |
593 | ||
594 | Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not | |
595 | proper. */ | |
f73ad30e | 596 | #define ACCUMULATE_OUTGOING_ARGS 1 |
309dd885 | 597 | |
309dd885 NC |
598 | /* A C expression that should indicate the number of bytes of its own arguments |
599 | that a function pops on returning, or 0 if the function pops no arguments | |
600 | and the caller must therefore pop them all after the function returns. | |
601 | ||
602 | FUNDECL is a C variable whose value is a tree node that describes the | |
603 | function in question. Normally it is a node of type `FUNCTION_DECL' that | |
604 | describes the declaration of the function. From this it is possible to | |
91d231cb | 605 | obtain the DECL_ATTRIBUTES of the function. |
309dd885 NC |
606 | |
607 | FUNTYPE is a C variable whose value is a tree node that describes the | |
608 | function in question. Normally it is a node of type `FUNCTION_TYPE' that | |
609 | describes the data type of the function. From this it is possible to obtain | |
610 | the data types of the value and arguments (if known). | |
611 | ||
612 | When a call to a library function is being considered, FUNTYPE will contain | |
613 | an identifier node for the library function. Thus, if you need to | |
614 | distinguish among various library functions, you can do so by their names. | |
615 | Note that "library function" in this context means a function used to | |
616 | perform arithmetic, whose name is known specially in the compiler and was | |
617 | not mentioned in the C code being compiled. | |
618 | ||
619 | STACK-SIZE is the number of bytes of arguments passed on the stack. If a | |
620 | variable number of bytes is passed, it is zero, and argument popping will | |
621 | always be the responsibility of the calling function. | |
622 | ||
8aeea6e6 | 623 | On the VAX, all functions always pop their arguments, so the definition of |
309dd885 NC |
624 | this macro is STACK-SIZE. On the 68000, using the standard calling |
625 | convention, no functions pop their arguments, so the value of the macro is | |
626 | always 0 in this case. But an alternative calling convention is available | |
627 | in which functions that take a fixed number of arguments pop them but other | |
628 | functions (such as `printf') pop nothing (the caller pops all). When this | |
629 | convention is in use, FUNTYPE is examined to determine whether a function | |
630 | takes a fixed number of arguments. */ | |
631 | #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0 | |
632 | ||
309dd885 | 633 | /*}}}*/ \f |
28b487d7 | 634 | /*{{{ Function Arguments in Registers. */ |
309dd885 | 635 | |
309dd885 NC |
636 | /* The number of register assigned to holding function arguments. */ |
637 | ||
638 | #define FR30_NUM_ARG_REGS 4 | |
639 | ||
309dd885 NC |
640 | #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ |
641 | ( (NAMED) == 0 ? NULL_RTX \ | |
fe984136 | 642 | : targetm.calls.must_pass_in_stack (MODE, TYPE) ? NULL_RTX \ |
309dd885 | 643 | : (CUM) >= FR30_NUM_ARG_REGS ? NULL_RTX \ |
f1c25d3b | 644 | : gen_rtx_REG (MODE, CUM + FIRST_ARG_REGNUM)) |
309dd885 NC |
645 | |
646 | /* A C type for declaring a variable that is used as the first argument of | |
647 | `FUNCTION_ARG' and other related values. For some target machines, the type | |
648 | `int' suffices and can hold the number of bytes of argument so far. | |
649 | ||
650 | There is no need to record in `CUMULATIVE_ARGS' anything about the arguments | |
651 | that have been passed on the stack. The compiler has other variables to | |
652 | keep track of that. For target machines on which all arguments are passed | |
653 | on the stack, there is no need to store anything in `CUMULATIVE_ARGS'; | |
654 | however, the data structure must exist and should not be empty, so use | |
655 | `int'. */ | |
656 | /* On the FR30 this value is an accumulating count of the number of argument | |
657 | registers that have been filled with argument values, as opposed to say, | |
658 | the number of bytes of argument accumulated so far. */ | |
845b1456 | 659 | #define CUMULATIVE_ARGS int |
309dd885 | 660 | |
309dd885 NC |
661 | /* A C statement (sans semicolon) for initializing the variable CUM for the |
662 | state at the beginning of the argument list. The variable has type | |
663 | `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type | |
664 | of the function which will receive the args, or 0 if the args are to a | |
665 | compiler support library function. The value of INDIRECT is nonzero when | |
666 | processing an indirect call, for example a call through a function pointer. | |
667 | The value of INDIRECT is zero for a call to an explicitly named function, a | |
668 | library function call, or when `INIT_CUMULATIVE_ARGS' is used to find | |
669 | arguments for the function being compiled. | |
670 | ||
671 | When processing a call to a compiler support library function, LIBNAME | |
672 | identifies which one. It is a `symbol_ref' rtx which contains the name of | |
673 | the function, as a string. LIBNAME is 0 when an ordinary C function call is | |
674 | being processed. Thus, each time this macro is called, either LIBNAME or | |
675 | FNTYPE is nonzero, but never both of them at once. */ | |
0f6937fe AM |
676 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ |
677 | (CUM) = 0 | |
309dd885 | 678 | |
309dd885 NC |
679 | /* A C statement (sans semicolon) to update the summarizer variable CUM to |
680 | advance past an argument in the argument list. The values MODE, TYPE and | |
681 | NAMED describe that argument. Once this is done, the variable CUM is | |
682 | suitable for analyzing the *following* argument with `FUNCTION_ARG', etc. | |
683 | ||
684 | This macro need not do anything if the argument in question was passed on | |
685 | the stack. The compiler knows how to track the amount of stack space used | |
686 | for arguments without any special help. */ | |
687 | #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ | |
688 | (CUM) += (NAMED) * fr30_num_arg_regs (MODE, TYPE) | |
689 | ||
309dd885 NC |
690 | /* A C expression that is nonzero if REGNO is the number of a hard register in |
691 | which function arguments are sometimes passed. This does *not* include | |
692 | implicit arguments such as the static chain and the structure-value address. | |
693 | On many machines, no registers can be used for this purpose since all | |
694 | function arguments are pushed on the stack. */ | |
695 | #define FUNCTION_ARG_REGNO_P(REGNO) \ | |
696 | ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) < FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS)) | |
697 | ||
698 | /*}}}*/ \f | |
28b487d7 | 699 | /*{{{ How Scalar Function Values are Returned. */ |
309dd885 | 700 | |
309dd885 NC |
701 | #define FUNCTION_VALUE(VALTYPE, FUNC) \ |
702 | gen_rtx_REG (TYPE_MODE (VALTYPE), RETURN_VALUE_REGNUM) | |
703 | ||
704 | /* A C expression to create an RTX representing the place where a library | |
705 | function returns a value of mode MODE. If the precise function being called | |
706 | is known, FUNC is a tree node (`FUNCTION_DECL') for it; otherwise, FUNC is a | |
707 | null pointer. This makes it possible to use a different value-returning | |
708 | convention for specific functions when all their calls are known. | |
709 | ||
710 | Note that "library function" in this context means a compiler support | |
711 | routine, used to perform arithmetic, whose name is known specially by the | |
712 | compiler and was not mentioned in the C code being compiled. | |
713 | ||
714 | The definition of `LIBRARY_VALUE' need not be concerned aggregate data | |
715 | types, because none of the library functions returns such types. */ | |
f1c25d3b | 716 | #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, RETURN_VALUE_REGNUM) |
309dd885 NC |
717 | |
718 | /* A C expression that is nonzero if REGNO is the number of a hard register in | |
ff482c8d | 719 | which the values of called function may come back. */ |
309dd885 NC |
720 | |
721 | #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM) | |
722 | ||
309dd885 | 723 | /*}}}*/ \f |
28b487d7 | 724 | /*{{{ How Large Values are Returned. */ |
309dd885 NC |
725 | |
726 | /* Define this macro to be 1 if all structure and union return values must be | |
727 | in memory. Since this results in slower code, this should be defined only | |
728 | if needed for compatibility with other compilers or with an ABI. If you | |
729 | define this macro to be 0, then the conventions used for structure and union | |
730 | return values are decided by the `RETURN_IN_MEMORY' macro. | |
731 | ||
732 | If not defined, this defaults to the value 1. */ | |
733 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
734 | ||
309dd885 NC |
735 | /*}}}*/ \f |
736 | /*{{{ Generating Code for Profiling. */ | |
737 | ||
738 | /* A C statement or compound statement to output to FILE some assembler code to | |
739 | call the profiling subroutine `mcount'. Before calling, the assembler code | |
740 | must load the address of a counter variable into a register where `mcount' | |
741 | expects to find the address. The name of this variable is `LP' followed by | |
742 | the number LABELNO, so you would generate the name using `LP%d' in a | |
743 | `fprintf'. | |
744 | ||
745 | The details of how the address should be passed to `mcount' are determined | |
7ec022b2 | 746 | by your operating system environment, not by GCC. To figure them out, |
309dd885 NC |
747 | compile a small program for profiling using the system's installed C |
748 | compiler and look at the assembler code that results. */ | |
749 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
750 | { \ | |
751 | fprintf (FILE, "\t mov rp, r1\n" ); \ | |
752 | fprintf (FILE, "\t ldi:32 mcount, r0\n" ); \ | |
753 | fprintf (FILE, "\t call @r0\n" ); \ | |
754 | fprintf (FILE, ".word\tLP%d\n", LABELNO); \ | |
755 | } | |
756 | ||
309dd885 NC |
757 | /*}}}*/ \f |
758 | /*{{{ Trampolines for Nested Functions. */ | |
759 | ||
760 | /* On the FR30, the trampoline is: | |
761 | ||
254a8f0d | 762 | nop |
309dd885 | 763 | ldi:32 STATIC, r12 |
254a8f0d | 764 | nop |
309dd885 | 765 | ldi:32 FUNCTION, r0 |
254a8f0d JL |
766 | jmp @r0 |
767 | ||
27d30956 | 768 | The no-ops are to guarantee that the static chain and final |
839a4992 | 769 | target are 32 bit aligned within the trampoline. That allows us to |
254a8f0d JL |
770 | initialize those locations with simple SImode stores. The alternative |
771 | would be to use HImode stores. */ | |
309dd885 NC |
772 | |
773 | /* A C statement to output, on the stream FILE, assembler code for a block of | |
774 | data that contains the constant parts of a trampoline. This code should not | |
775 | include a label--the label is taken care of automatically. */ | |
776 | #define TRAMPOLINE_TEMPLATE(FILE) \ | |
777 | { \ | |
254a8f0d | 778 | fprintf (FILE, "\tnop\n"); \ |
309dd885 | 779 | fprintf (FILE, "\tldi:32\t#0, %s\n", reg_names [STATIC_CHAIN_REGNUM]); \ |
254a8f0d | 780 | fprintf (FILE, "\tnop\n"); \ |
309dd885 NC |
781 | fprintf (FILE, "\tldi:32\t#0, %s\n", reg_names [COMPILER_SCRATCH_REGISTER]); \ |
782 | fprintf (FILE, "\tjmp\t@%s\n", reg_names [COMPILER_SCRATCH_REGISTER]); \ | |
783 | } | |
784 | ||
309dd885 | 785 | /* A C expression for the size in bytes of the trampoline, as an integer. */ |
254a8f0d JL |
786 | #define TRAMPOLINE_SIZE 18 |
787 | ||
788 | /* We want the trampoline to be aligned on a 32bit boundary so that we can | |
789 | make sure the location of the static chain & target function within | |
790 | the trampoline is also aligned on a 32bit boundary. */ | |
791 | #define TRAMPOLINE_ALIGNMENT 32 | |
309dd885 | 792 | |
309dd885 NC |
793 | /* A C statement to initialize the variable parts of a trampoline. ADDR is an |
794 | RTX for the address of the trampoline; FNADDR is an RTX for the address of | |
795 | the nested function; STATIC_CHAIN is an RTX for the static chain value that | |
796 | should be passed to the function when it is called. */ | |
797 | #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \ | |
798 | do \ | |
799 | { \ | |
f1c25d3b KH |
800 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (ADDR, 4)), STATIC_CHAIN);\ |
801 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (ADDR, 12)), FNADDR); \ | |
309dd885 NC |
802 | } while (0); |
803 | ||
309dd885 | 804 | /*}}}*/ \f |
28b487d7 | 805 | /*{{{ Addressing Modes. */ |
309dd885 NC |
806 | |
807 | /* A C expression that is 1 if the RTX X is a constant which is a valid | |
808 | address. On most machines, this can be defined as `CONSTANT_P (X)', but a | |
809 | few machines are more restrictive in which constant addresses are supported. | |
810 | ||
811 | `CONSTANT_P' accepts integer-values expressions whose values are not | |
812 | explicitly known, such as `symbol_ref', `label_ref', and `high' expressions | |
813 | and `const' arithmetic expressions, in addition to `const_int' and | |
814 | `const_double' expressions. */ | |
815 | #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) | |
816 | ||
817 | /* A number, the maximum number of registers that can appear in a valid memory | |
818 | address. Note that it is up to you to specify a value equal to the maximum | |
819 | number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */ | |
820 | #define MAX_REGS_PER_ADDRESS 1 | |
821 | ||
822 | /* A C compound statement with a conditional `goto LABEL;' executed if X (an | |
823 | RTX) is a legitimate memory address on the target machine for a memory | |
fb49053f | 824 | operand of mode MODE. */ |
309dd885 NC |
825 | |
826 | /* On the FR30 we only have one real addressing mode - an address in a | |
827 | register. There are three special cases however: | |
828 | ||
829 | * indexed addressing using small positive offsets from the stack pointer | |
830 | ||
831 | * indexed addressing using small signed offsets from the frame pointer | |
832 | ||
a920aefe | 833 | * register plus register addressing using R13 as the base register. |
309dd885 NC |
834 | |
835 | At the moment we only support the first two of these special cases. */ | |
836 | ||
837 | #ifdef REG_OK_STRICT | |
838 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ | |
839 | do \ | |
840 | { \ | |
841 | if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ | |
842 | goto LABEL; \ | |
843 | if (GET_CODE (X) == PLUS \ | |
844 | && ((MODE) == SImode || (MODE) == SFmode) \ | |
845 | && XEXP (X, 0) == stack_pointer_rtx \ | |
846 | && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
847 | && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ | |
848 | goto LABEL; \ | |
849 | if (GET_CODE (X) == PLUS \ | |
850 | && ((MODE) == SImode || (MODE) == SFmode) \ | |
851 | && XEXP (X, 0) == frame_pointer_rtx \ | |
852 | && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
853 | && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ | |
854 | goto LABEL; \ | |
855 | } \ | |
856 | while (0) | |
857 | #else | |
858 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ | |
859 | do \ | |
860 | { \ | |
861 | if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ | |
862 | goto LABEL; \ | |
863 | if (GET_CODE (X) == PLUS \ | |
864 | && ((MODE) == SImode || (MODE) == SFmode) \ | |
865 | && XEXP (X, 0) == stack_pointer_rtx \ | |
866 | && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
867 | && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ | |
868 | goto LABEL; \ | |
869 | if (GET_CODE (X) == PLUS \ | |
870 | && ((MODE) == SImode || (MODE) == SFmode) \ | |
40f4a97d NC |
871 | && GET_CODE (XEXP (X, 0)) == REG \ |
872 | && (REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ | |
873 | || REGNO (XEXP (X, 0)) == ARG_POINTER_REGNUM) \ | |
309dd885 NC |
874 | && GET_CODE (XEXP (X, 1)) == CONST_INT \ |
875 | && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ | |
876 | goto LABEL; \ | |
877 | } \ | |
878 | while (0) | |
879 | #endif | |
880 | ||
881 | /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for | |
882 | use as a base register. For hard registers, it should always accept those | |
883 | which the hardware permits and reject the others. Whether the macro accepts | |
884 | or rejects pseudo registers must be controlled by `REG_OK_STRICT' as | |
885 | described above. This usually requires two variant definitions, of which | |
886 | `REG_OK_STRICT' controls the one actually used. */ | |
887 | #ifdef REG_OK_STRICT | |
888 | #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) <= STACK_POINTER_REGNUM) | |
889 | #else | |
890 | #define REG_OK_FOR_BASE_P(X) 1 | |
891 | #endif | |
892 | ||
893 | /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for | |
894 | use as an index register. | |
895 | ||
896 | The difference between an index register and a base register is that the | |
897 | index register may be scaled. If an address involves the sum of two | |
898 | registers, neither one of them scaled, then either one may be labeled the | |
899 | "base" and the other the "index"; but whichever labeling is used must fit | |
900 | the machine's constraints of which registers may serve in each capacity. | |
901 | The compiler will try both labelings, looking for one that is valid, and | |
902 | will reload one or both registers only if neither labeling works. */ | |
903 | #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) | |
904 | ||
309dd885 NC |
905 | /* A C statement or compound statement with a conditional `goto LABEL;' |
906 | executed if memory address X (an RTX) can have different meanings depending | |
907 | on the machine mode of the memory reference it is used for or if the address | |
908 | is valid for some modes but not others. | |
909 | ||
910 | Autoincrement and autodecrement addresses typically have mode-dependent | |
911 | effects because the amount of the increment or decrement is the size of the | |
912 | operand being addressed. Some machines have other mode-dependent addresses. | |
913 | Many RISC machines have no mode-dependent addresses. | |
914 | ||
915 | You may assume that ADDR is a valid address for the machine. */ | |
916 | #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) | |
917 | ||
918 | /* A C expression that is nonzero if X is a legitimate constant for an | |
919 | immediate operand on the target machine. You can assume that X satisfies | |
920 | `CONSTANT_P', so you need not check this. In fact, `1' is a suitable | |
921 | definition for this macro on machines where anything `CONSTANT_P' is valid. */ | |
922 | #define LEGITIMATE_CONSTANT_P(X) 1 | |
923 | ||
309dd885 NC |
924 | /*}}}*/ \f |
925 | /*{{{ Describing Relative Costs of Operations */ | |
926 | ||
309dd885 NC |
927 | /* Define this macro as a C expression which is nonzero if accessing less than |
928 | a word of memory (i.e. a `char' or a `short') is no faster than accessing a | |
929 | word of memory, i.e., if such access require more than one instruction or if | |
930 | there is no difference in cost between byte and (aligned) word loads. | |
931 | ||
932 | When this macro is not defined, the compiler will access a field by finding | |
933 | the smallest containing object; when it is defined, a fullword load will be | |
934 | used if alignment permits. Unless bytes accesses are faster than word | |
935 | accesses, using word accesses is preferable since it may eliminate | |
936 | subsequent memory access if subsequent accesses occur to other fields in the | |
937 | same word of the structure, but to different bytes. */ | |
938 | #define SLOW_BYTE_ACCESS 1 | |
939 | ||
309dd885 NC |
940 | /*}}}*/ \f |
941 | /*{{{ Dividing the output into sections. */ | |
942 | ||
943 | /* A C expression whose value is a string containing the assembler operation | |
944 | that should precede instructions and read-only data. Normally `".text"' is | |
945 | right. */ | |
4e8aa65c | 946 | #define TEXT_SECTION_ASM_OP "\t.text" |
309dd885 NC |
947 | |
948 | /* A C expression whose value is a string containing the assembler operation to | |
949 | identify the following data as writable initialized data. Normally | |
950 | `".data"' is right. */ | |
4e8aa65c | 951 | #define DATA_SECTION_ASM_OP "\t.data" |
309dd885 | 952 | |
309dd885 NC |
953 | /* If defined, a C expression whose value is a string containing the |
954 | assembler operation to identify the following data as | |
955 | uninitialized global data. If not defined, and neither | |
956 | `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, | |
957 | uninitialized global data will be output in the data section if | |
958 | `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be | |
959 | used. */ | |
5c7666c1 | 960 | #define BSS_SECTION_ASM_OP "\t.section .bss" |
309dd885 | 961 | |
309dd885 NC |
962 | /*}}}*/ \f |
963 | /*{{{ The Overall Framework of an Assembler File. */ | |
964 | ||
309dd885 NC |
965 | /* A C string constant describing how to begin a comment in the target |
966 | assembler language. The compiler assumes that the comment will end at the | |
967 | end of the line. */ | |
968 | #define ASM_COMMENT_START ";" | |
969 | ||
970 | /* A C string constant for text to be output before each `asm' statement or | |
971 | group of consecutive ones. Normally this is `"#APP"', which is a comment | |
972 | that has no effect on most assemblers but tells the GNU assembler that it | |
973 | must check the lines that follow for all valid assembler constructs. */ | |
974 | #define ASM_APP_ON "#APP\n" | |
975 | ||
976 | /* A C string constant for text to be output after each `asm' statement or | |
977 | group of consecutive ones. Normally this is `"#NO_APP"', which tells the | |
978 | GNU assembler to resume making the time-saving assumptions that are valid | |
979 | for ordinary compiler output. */ | |
980 | #define ASM_APP_OFF "#NO_APP\n" | |
981 | ||
309dd885 NC |
982 | /*}}}*/ \f |
983 | /*{{{ Output and Generation of Labels. */ | |
984 | ||
506a61b1 KG |
985 | /* Globalizing directive for a label. */ |
986 | #define GLOBAL_ASM_OP "\t.globl " | |
309dd885 | 987 | |
309dd885 NC |
988 | /*}}}*/ \f |
989 | /*{{{ Output of Assembler Instructions. */ | |
990 | ||
309dd885 NC |
991 | /* A C compound statement to output to stdio stream STREAM the assembler syntax |
992 | for an instruction operand X. X is an RTL expression. | |
993 | ||
994 | CODE is a value that can be used to specify one of several ways of printing | |
995 | the operand. It is used when identical operands must be printed differently | |
996 | depending on the context. CODE comes from the `%' specification that was | |
997 | used to request printing of the operand. If the specification was just | |
998 | `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is | |
999 | the ASCII code for LTR. | |
1000 | ||
1001 | If X is a register, this macro should print the register's name. The names | |
1002 | can be found in an array `reg_names' whose type is `char *[]'. `reg_names' | |
1003 | is initialized from `REGISTER_NAMES'. | |
1004 | ||
1005 | When the machine description has a specification `%PUNCT' (a `%' followed by | |
1006 | a punctuation character), this macro is called with a null pointer for X and | |
1007 | the punctuation character for CODE. */ | |
1008 | #define PRINT_OPERAND(STREAM, X, CODE) fr30_print_operand (STREAM, X, CODE) | |
1009 | ||
309dd885 NC |
1010 | /* A C expression which evaluates to true if CODE is a valid punctuation |
1011 | character for use in the `PRINT_OPERAND' macro. If | |
1012 | `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation | |
1013 | characters (except for the standard one, `%') are used in this way. */ | |
1014 | #define PRINT_OPERAND_PUNCT_VALID_P(CODE) (CODE == '#') | |
1015 | ||
1016 | /* A C compound statement to output to stdio stream STREAM the assembler syntax | |
1017 | for an instruction operand that is a memory reference whose address is X. X | |
fb49053f | 1018 | is an RTL expression. */ |
309dd885 | 1019 | |
309dd885 | 1020 | #define PRINT_OPERAND_ADDRESS(STREAM, X) fr30_print_operand_address (STREAM, X) |
309dd885 | 1021 | |
309dd885 NC |
1022 | /* If defined, C string expressions to be used for the `%R', `%L', `%U', and |
1023 | `%I' options of `asm_fprintf' (see `final.c'). These are useful when a | |
1024 | single `md' file must support multiple assembler formats. In that case, the | |
1025 | various `tm.h' files can define these macros differently. | |
1026 | ||
1027 | USER_LABEL_PREFIX is defined in svr4.h. */ | |
1028 | #define REGISTER_PREFIX "%" | |
1029 | #define LOCAL_LABEL_PREFIX "." | |
1030 | #define USER_LABEL_PREFIX "" | |
1031 | #define IMMEDIATE_PREFIX "" | |
1032 | ||
309dd885 | 1033 | /*}}}*/ \f |
28b487d7 | 1034 | /*{{{ Output of Dispatch Tables. */ |
309dd885 NC |
1035 | |
1036 | /* This macro should be provided on machines where the addresses in a dispatch | |
1037 | table are relative to the table's own address. | |
1038 | ||
1039 | The definition should be a C statement to output to the stdio stream STREAM | |
1040 | an assembler pseudo-instruction to generate a difference between two labels. | |
1041 | VALUE and REL are the numbers of two internal labels. The definitions of | |
4977bab6 | 1042 | these labels are output using `(*targetm.asm_out.internal_label)', and they must be |
309dd885 NC |
1043 | printed in the same way here. For example, |
1044 | ||
1045 | fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */ | |
1046 | #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ | |
1047 | fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL) | |
1048 | ||
1049 | /* This macro should be provided on machines where the addresses in a dispatch | |
1050 | table are absolute. | |
1051 | ||
1052 | The definition should be a C statement to output to the stdio stream STREAM | |
1053 | an assembler pseudo-instruction to generate a reference to a label. VALUE | |
1054 | is the number of an internal label whose definition is output using | |
4977bab6 | 1055 | `(*targetm.asm_out.internal_label)'. For example, |
309dd885 NC |
1056 | |
1057 | fprintf (STREAM, "\t.word L%d\n", VALUE) */ | |
1058 | #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ | |
1059 | fprintf (STREAM, "\t.word .L%d\n", VALUE) | |
1060 | ||
309dd885 NC |
1061 | /*}}}*/ \f |
1062 | /*{{{ Assembler Commands for Alignment. */ | |
1063 | ||
309dd885 NC |
1064 | /* A C statement to output to the stdio stream STREAM an assembler command to |
1065 | advance the location counter to a multiple of 2 to the POWER bytes. POWER | |
1066 | will be a C expression of type `int'. */ | |
1067 | #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ | |
1068 | fprintf ((STREAM), "\t.p2align %d\n", (POWER)) | |
1069 | ||
309dd885 NC |
1070 | /*}}}*/ \f |
1071 | /*{{{ Miscellaneous Parameters. */ | |
1072 | ||
1073 | /* An alias for a machine mode name. This is the machine mode that elements of | |
1074 | a jump-table should have. */ | |
1075 | #define CASE_VECTOR_MODE SImode | |
1076 | ||
309dd885 NC |
1077 | /* The maximum number of bytes that a single instruction can move quickly from |
1078 | memory to memory. */ | |
1079 | #define MOVE_MAX 8 | |
1080 | ||
309dd885 NC |
1081 | /* A C expression which is nonzero if on this machine it is safe to "convert" |
1082 | an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller | |
1083 | than INPREC) by merely operating on it as if it had only OUTPREC bits. | |
1084 | ||
1085 | On many machines, this expression can be 1. | |
1086 | ||
1087 | When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for | |
1088 | which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the | |
1089 | case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve | |
1090 | things. */ | |
1091 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 | |
1092 | ||
309dd885 NC |
1093 | /* An alias for the machine mode for pointers. On most machines, define this |
1094 | to be the integer mode corresponding to the width of a hardware pointer; | |
1095 | `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines | |
1096 | you must define this to be one of the partial integer modes, such as | |
1097 | `PSImode'. | |
1098 | ||
1099 | The width of `Pmode' must be at least as large as the value of | |
1100 | `POINTER_SIZE'. If it is not equal, you must define the macro | |
1101 | `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */ | |
1102 | #define Pmode SImode | |
1103 | ||
1104 | /* An alias for the machine mode used for memory references to functions being | |
1105 | called, in `call' RTL expressions. On most machines this should be | |
1106 | `QImode'. */ | |
1107 | #define FUNCTION_MODE QImode | |
1108 | ||
309dd885 NC |
1109 | /* If cross-compiling, don't require stdio.h etc to build libgcc.a. */ |
1110 | #if defined CROSS_COMPILE && ! defined inhibit_libc | |
1111 | #define inhibit_libc | |
1112 | #endif | |
1113 | ||
1114 | /*}}}*/ \f | |
1115 | /*{{{ Exported variables */ | |
1116 | ||
1117 | /* Define the information needed to generate branch and scc insns. This is | |
1118 | stored from the compare operation. Note that we can't use "rtx" here | |
1119 | since it hasn't been defined! */ | |
1120 | ||
1121 | extern struct rtx_def * fr30_compare_op0; | |
1122 | extern struct rtx_def * fr30_compare_op1; | |
1123 | ||
309dd885 NC |
1124 | /*}}}*/ \f |
1125 | ||
1126 | /* Local Variables: */ | |
1127 | /* folded-file: t */ | |
1128 | /* End: */ |