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1f92da87 NC |
1 | /* Definitions of target machine for GNU compiler, Renesas M32R cpu. |
2 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 | |
cf011243 | 3 | Free Software Foundation, Inc. |
8c5ca3b9 | 4 | |
1f92da87 | 5 | This file is part of GCC. |
8c5ca3b9 | 6 | |
1f92da87 NC |
7 | GCC is free software; you can redistribute it and/or modify it |
8 | under the terms of the GNU General Public License as published | |
9 | by the Free Software Foundation; either version 2, or (at your | |
10 | option) any later version. | |
8c5ca3b9 | 11 | |
1f92da87 NC |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
8c5ca3b9 | 16 | |
1f92da87 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with GCC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
8c5ca3b9 DE |
21 | |
22 | /* Things to do: | |
23 | - longlong.h? | |
24 | */ | |
25 | ||
8c5ca3b9 DE |
26 | #undef SWITCH_TAKES_ARG |
27 | #undef WORD_SWITCH_TAKES_ARG | |
28 | #undef HANDLE_SYSV_PRAGMA | |
29 | #undef SIZE_TYPE | |
30 | #undef PTRDIFF_TYPE | |
31 | #undef WCHAR_TYPE | |
32 | #undef WCHAR_TYPE_SIZE | |
8c5ca3b9 | 33 | #undef ASM_OUTPUT_EXTERNAL_LIBCALL |
56e2e762 NC |
34 | #undef TARGET_VERSION |
35 | #undef CPP_SPEC | |
36 | #undef ASM_SPEC | |
37 | #undef LINK_SPEC | |
38 | #undef STARTFILE_SPEC | |
39 | #undef ENDFILE_SPEC | |
40 | #undef SUBTARGET_SWITCHES | |
ad126521 KI |
41 | |
42 | #undef ASM_APP_ON | |
43 | #undef ASM_APP_OFF | |
8c5ca3b9 | 44 | \f |
de41e41c BE |
45 | |
46 | /* M32R/X overrides. */ | |
47 | /* Print subsidiary information on the compiler version in use. */ | |
6975bd2c | 48 | #define TARGET_VERSION fprintf (stderr, " (m32r/x/2)"); |
de41e41c BE |
49 | |
50 | /* Additional flags for the preprocessor. */ | |
6975bd2c KI |
51 | #define CPP_CPU_SPEC "%{m32rx:-D__M32RX__ -D__m32rx__ -U__M32R2__ -U__m32r2__} \ |
52 | %{m32r2:-D__M32R2__ -D__m32r2__ -U__M32RX__ -U__m32rx__} \ | |
53 | %{m32r:-U__M32RX__ -U__m32rx__ -U__M32R2__ -U__m32r2__} \ | |
54 | " | |
55 | ||
de41e41c BE |
56 | /* Assembler switches. */ |
57 | #define ASM_CPU_SPEC \ | |
6975bd2c | 58 | "%{m32r} %{m32rx} %{m32r2} %{!O0: %{O*: -O}} --no-warn-explicit-parallel-conflicts" |
de41e41c BE |
59 | |
60 | /* Use m32rx specific crt0/crtinit/crtfini files. */ | |
61 | #define STARTFILE_CPU_SPEC "%{!shared:crt0.o%s} %{m32rx:m32rx/crtinit.o%s} %{!m32rx:crtinit.o%s}" | |
62 | #define ENDFILE_CPU_SPEC "-lgloss %{m32rx:m32rx/crtfini.o%s} %{!m32rx:crtfini.o%s}" | |
63 | ||
64 | /* Extra machine dependent switches. */ | |
65 | #define SUBTARGET_SWITCHES \ | |
66 | { "32rx", TARGET_M32RX_MASK, "Compile for the m32rx" }, \ | |
6975bd2c KI |
67 | { "32r2", TARGET_M32R2_MASK, "Compile for the m32r2" }, \ |
68 | { "32r", -(TARGET_M32RX_MASK+TARGET_M32R2_MASK), "" }, | |
de41e41c BE |
69 | |
70 | /* Define this macro as a C expression for the initializer of an array of | |
71 | strings to tell the driver program which options are defaults for this | |
72 | target and thus do not need to be handled specially when using | |
73 | `MULTILIB_OPTIONS'. */ | |
74 | #define SUBTARGET_MULTILIB_DEFAULTS , "m32r" | |
75 | ||
76 | /* Number of additional registers the subtarget defines. */ | |
77 | #define SUBTARGET_NUM_REGISTERS 1 | |
78 | ||
79 | /* 1 for registers that cannot be allocated. */ | |
80 | #define SUBTARGET_FIXED_REGISTERS , 1 | |
81 | ||
82 | /* 1 for registers that are not available across function calls. */ | |
83 | #define SUBTARGET_CALL_USED_REGISTERS , 1 | |
84 | ||
85 | /* Order to allocate model specific registers. */ | |
86 | #define SUBTARGET_REG_ALLOC_ORDER , 19 | |
87 | ||
88 | /* Registers which are accumulators. */ | |
89 | #define SUBTARGET_REG_CLASS_ACCUM 0x80000 | |
90 | ||
91 | /* All registers added. */ | |
92 | #define SUBTARGET_REG_CLASS_ALL SUBTARGET_REG_CLASS_ACCUM | |
93 | ||
94 | /* Additional accumulator registers. */ | |
95 | #define SUBTARGET_ACCUM_P(REGNO) ((REGNO) == 19) | |
96 | ||
97 | /* Define additional register names. */ | |
98 | #define SUBTARGET_REGISTER_NAMES , "a1" | |
99 | /* end M32R/X overrides. */ | |
100 | ||
8c5ca3b9 | 101 | /* Print subsidiary information on the compiler version in use. */ |
56e2e762 | 102 | #ifndef TARGET_VERSION |
8c5ca3b9 | 103 | #define TARGET_VERSION fprintf (stderr, " (m32r)") |
56e2e762 | 104 | #endif |
2b7972b0 | 105 | |
ad126521 | 106 | /* Switch Recognition by gcc.c. Add -G xx support. */ |
8c5ca3b9 | 107 | |
56e2e762 | 108 | #undef SWITCH_TAKES_ARG |
8c5ca3b9 DE |
109 | #define SWITCH_TAKES_ARG(CHAR) \ |
110 | (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G') | |
111 | ||
112 | /* Names to predefine in the preprocessor for this target machine. */ | |
113 | /* __M32R__ is defined by the existing compiler so we use that. */ | |
cc956ba2 NB |
114 | #define TARGET_CPU_CPP_BUILTINS() \ |
115 | do \ | |
116 | { \ | |
117 | builtin_define ("__M32R__"); \ | |
118 | builtin_assert ("cpu=m32r"); \ | |
119 | builtin_assert ("machine=m32r"); \ | |
ad126521 KI |
120 | builtin_define (TARGET_BIG_ENDIAN \ |
121 | ? "__BIG_ENDIAN__" : "__LITTLE_ENDIAN__"); \ | |
122 | if (flag_pic) \ | |
123 | { \ | |
124 | builtin_define ("__pic__"); \ | |
125 | builtin_define ("__PIC__"); \ | |
126 | } \ | |
cc956ba2 NB |
127 | } \ |
128 | while (0) | |
8c5ca3b9 | 129 | |
56e2e762 NC |
130 | /* This macro defines names of additional specifications to put in the specs |
131 | that can be used in various specifications like CC1_SPEC. Its definition | |
132 | is an initializer with a subgrouping for each command option. | |
8c5ca3b9 | 133 | |
56e2e762 | 134 | Each subgrouping contains a string constant, that defines the |
7ec022b2 | 135 | specification name, and a string constant that used by the GCC driver |
56e2e762 | 136 | program. |
8c5ca3b9 | 137 | |
56e2e762 | 138 | Do not define this macro if it does not need to do anything. */ |
2b7972b0 | 139 | |
56e2e762 NC |
140 | #ifndef SUBTARGET_EXTRA_SPECS |
141 | #define SUBTARGET_EXTRA_SPECS | |
8c5ca3b9 DE |
142 | #endif |
143 | ||
56e2e762 NC |
144 | #ifndef ASM_CPU_SPEC |
145 | #define ASM_CPU_SPEC "" | |
146 | #endif | |
8c5ca3b9 | 147 | |
56e2e762 NC |
148 | #ifndef CPP_CPU_SPEC |
149 | #define CPP_CPU_SPEC "" | |
150 | #endif | |
151 | ||
152 | #ifndef CC1_CPU_SPEC | |
153 | #define CC1_CPU_SPEC "" | |
154 | #endif | |
155 | ||
156 | #ifndef LINK_CPU_SPEC | |
157 | #define LINK_CPU_SPEC "" | |
158 | #endif | |
159 | ||
160 | #ifndef STARTFILE_CPU_SPEC | |
161 | #define STARTFILE_CPU_SPEC "%{!shared:crt0.o%s} crtinit.o%s" | |
162 | #endif | |
163 | ||
164 | #ifndef ENDFILE_CPU_SPEC | |
165 | #define ENDFILE_CPU_SPEC "-lgloss crtfini.o%s" | |
166 | #endif | |
167 | ||
168 | #ifndef RELAX_SPEC | |
ad126521 | 169 | #if 0 /* Not supported yet. */ |
56e2e762 | 170 | #define RELAX_SPEC "%{mrelax:-relax}" |
8c5ca3b9 | 171 | #else |
56e2e762 NC |
172 | #define RELAX_SPEC "" |
173 | #endif | |
8c5ca3b9 DE |
174 | #endif |
175 | ||
56e2e762 NC |
176 | #define EXTRA_SPECS \ |
177 | { "asm_cpu", ASM_CPU_SPEC }, \ | |
178 | { "cpp_cpu", CPP_CPU_SPEC }, \ | |
179 | { "cc1_cpu", CC1_CPU_SPEC }, \ | |
180 | { "link_cpu", LINK_CPU_SPEC }, \ | |
181 | { "startfile_cpu", STARTFILE_CPU_SPEC }, \ | |
182 | { "endfile_cpu", ENDFILE_CPU_SPEC }, \ | |
183 | { "relax", RELAX_SPEC }, \ | |
184 | SUBTARGET_EXTRA_SPECS | |
8c5ca3b9 | 185 | |
ad126521 | 186 | #undef CC1_SPEC |
56e2e762 | 187 | #define CC1_SPEC "%{G*} %(cc1_cpu)" |
2b7972b0 | 188 | |
56e2e762 NC |
189 | /* Options to pass on to the assembler. */ |
190 | #undef ASM_SPEC | |
ad126521 | 191 | #define ASM_SPEC "%{v} %(asm_cpu) %(relax) %{fpic:-K PIC} %{fPIC:-K PIC}" |
56e2e762 | 192 | |
56e2e762 NC |
193 | #define LINK_SPEC "%{v} %(link_cpu) %(relax)" |
194 | ||
195 | #undef STARTFILE_SPEC | |
196 | #define STARTFILE_SPEC "%(startfile_cpu)" | |
197 | ||
198 | #undef ENDFILE_SPEC | |
199 | #define ENDFILE_SPEC "%(endfile_cpu)" | |
8c5ca3b9 DE |
200 | |
201 | #undef LIB_SPEC | |
202 | \f | |
203 | /* Run-time compilation parameters selecting different hardware subsets. */ | |
204 | ||
205 | extern int target_flags; | |
206 | ||
a0ab749a | 207 | /* If nonzero, tell the linker to do relaxing. |
8c5ca3b9 DE |
208 | We don't do anything with the option, other than recognize it. |
209 | LINK_SPEC handles passing -relax to the linker. | |
210 | This can cause incorrect debugging information as line numbers may | |
211 | turn out wrong. This shouldn't be specified unless accompanied with -O2 | |
212 | [where the user expects debugging information to be less accurate]. */ | |
56e2e762 | 213 | #define TARGET_RELAX_MASK (1 << 0) |
8c5ca3b9 DE |
214 | |
215 | /* For miscellaneous debugging purposes. */ | |
56e2e762 NC |
216 | #define TARGET_DEBUG_MASK (1 << 1) |
217 | #define TARGET_DEBUG (target_flags & TARGET_DEBUG_MASK) | |
8c5ca3b9 DE |
218 | |
219 | /* Align loops to 32 byte boundaries (cache line size). */ | |
220 | /* ??? This option is experimental and is not documented. */ | |
56e2e762 NC |
221 | #define TARGET_ALIGN_LOOPS_MASK (1 << 2) |
222 | #define TARGET_ALIGN_LOOPS (target_flags & TARGET_ALIGN_LOOPS_MASK) | |
8c5ca3b9 | 223 | |
56e2e762 | 224 | /* Change issue rate. */ |
c237e94a ZW |
225 | #define TARGET_LOW_ISSUE_RATE_MASK (1 << 3) |
226 | #define TARGET_LOW_ISSUE_RATE (target_flags & TARGET_LOW_ISSUE_RATE_MASK) | |
8c5ca3b9 | 227 | |
56e2e762 NC |
228 | /* Change branch cost */ |
229 | #define TARGET_BRANCH_COST_MASK (1 << 4) | |
230 | #define TARGET_BRANCH_COST (target_flags & TARGET_BRANCH_COST_MASK) | |
2b7972b0 | 231 | |
56e2e762 NC |
232 | /* Target machine to compile for. */ |
233 | #define TARGET_M32R 1 | |
2b7972b0 | 234 | |
de41e41c BE |
235 | /* Support extended instruction set. */ |
236 | #define TARGET_M32RX_MASK (1 << 5) | |
237 | #define TARGET_M32RX (target_flags & TARGET_M32RX_MASK) | |
238 | #undef TARGET_M32R | |
239 | #define TARGET_M32R (! TARGET_M32RX) | |
240 | ||
6975bd2c KI |
241 | /* Support extended instruction set of m32r2. */ |
242 | #define TARGET_M32R2_MASK (1 << 6) | |
243 | #define TARGET_M32R2 (target_flags & TARGET_M32RX_MASK) | |
244 | #undef TARGET_M32R | |
245 | #define TARGET_M32R (! TARGET_M32RX && ! TARGET_M32R2) | |
246 | ||
ad126521 KI |
247 | /* Big Endian Flag. */ |
248 | #define BIG_ENDIAN_BIT (1 << 7) | |
249 | #define TARGET_BIG_ENDIAN (target_flags & BIG_ENDIAN_BIT) | |
250 | ||
251 | /* Little Endian Flag. */ | |
252 | #define LITTLE_ENDIAN_BIT (1 << 8) | |
253 | #ifndef TARGET_LITTLE_ENDIAN /* See little.h */ | |
254 | #define TARGET_LITTLE_ENDIAN (target_flags & LITTLE_ENDIAN_BIT) | |
255 | #endif | |
256 | ||
8c5ca3b9 DE |
257 | /* Macro to define tables used to set the flags. |
258 | This is a list in braces of pairs in braces, | |
259 | each pair being { "NAME", VALUE } | |
260 | where VALUE is the bits to set or minus the bits to clear. | |
261 | An empty string NAME is used to identify the default VALUE. */ | |
262 | ||
56e2e762 | 263 | #ifndef SUBTARGET_SWITCHES |
8c5ca3b9 | 264 | #define SUBTARGET_SWITCHES |
56e2e762 | 265 | #endif |
8c5ca3b9 | 266 | |
56e2e762 NC |
267 | #ifndef TARGET_DEFAULT |
268 | #define TARGET_DEFAULT 0 | |
269 | #endif | |
8c5ca3b9 | 270 | |
56e2e762 NC |
271 | #define TARGET_SWITCHES \ |
272 | { \ | |
273 | /* { "relax", TARGET_RELAX_MASK, "" }, \ | |
274 | { "no-relax", -TARGET_RELAX_MASK, "" },*/ \ | |
275 | { "debug", TARGET_DEBUG_MASK, \ | |
047142d3 | 276 | N_("Display compile time statistics") }, \ |
56e2e762 | 277 | { "align-loops", TARGET_ALIGN_LOOPS_MASK, \ |
047142d3 | 278 | N_("Align all loops to 32 byte boundary") }, \ |
56e2e762 | 279 | { "no-align-loops", -TARGET_ALIGN_LOOPS_MASK, "" }, \ |
c237e94a | 280 | { "issue-rate=1", TARGET_LOW_ISSUE_RATE_MASK, \ |
047142d3 | 281 | N_("Only issue one instruction per cycle") }, \ |
c237e94a | 282 | { "issue-rate=2", -TARGET_LOW_ISSUE_RATE_MASK, "" }, \ |
56e2e762 | 283 | { "branch-cost=1", TARGET_BRANCH_COST_MASK, \ |
047142d3 | 284 | N_("Prefer branches over conditional execution") }, \ |
56e2e762 NC |
285 | { "branch-cost=2", -TARGET_BRANCH_COST_MASK, "" }, \ |
286 | SUBTARGET_SWITCHES \ | |
287 | { "", TARGET_DEFAULT, "" } \ | |
288 | } | |
8c5ca3b9 | 289 | |
56e2e762 NC |
290 | extern const char * m32r_model_string; |
291 | extern const char * m32r_sdata_string; | |
2b7972b0 | 292 | |
ad126521 KI |
293 | /* Cache-flush support. */ |
294 | extern const char * m32r_cache_flush_func; | |
295 | extern const char * m32r_cache_flush_trap_string; | |
296 | extern int m32r_cache_flush_trap; | |
297 | ||
56e2e762 NC |
298 | #ifndef SUBTARGET_OPTIONS |
299 | #define SUBTARGET_OPTIONS | |
300 | #endif | |
2b7972b0 | 301 | |
56e2e762 NC |
302 | #define TARGET_OPTIONS \ |
303 | { \ | |
047142d3 | 304 | { "model=", & m32r_model_string, \ |
c409ea0d | 305 | N_("Code size: small, medium or large"), 0}, \ |
047142d3 | 306 | { "sdata=", & m32r_sdata_string, \ |
ad126521 KI |
307 | N_("Small data area: none, sdata, use"), 0}, \ |
308 | { "no-flush-func", & m32r_cache_flush_func, \ | |
309 | N_("Don't call any cache flush functions") }, \ | |
310 | { "flush-func=", & m32r_cache_flush_func, \ | |
311 | N_("Specify cache flush function") }, \ | |
312 | { "no-flush-trap", & m32r_cache_flush_trap_string, \ | |
313 | N_("Don't call any cache flush trap") }, \ | |
314 | { "flush-trap=", & m32r_cache_flush_trap_string, \ | |
315 | N_("Specify cache flush trap number") } \ | |
56e2e762 | 316 | SUBTARGET_OPTIONS \ |
8c5ca3b9 DE |
317 | } |
318 | ||
319 | /* Code Models | |
320 | ||
321 | Code models are used to select between two choices of two separate | |
322 | possibilities (address space size, call insn to use): | |
323 | ||
324 | small: addresses use 24 bits, use bl to make calls | |
325 | medium: addresses use 32 bits, use bl to make calls (*1) | |
326 | large: addresses use 32 bits, use seth/add3/jl to make calls (*2) | |
327 | ||
328 | The fourth is "addresses use 24 bits, use seth/add3/jl to make calls" but | |
329 | using this one doesn't make much sense. | |
330 | ||
331 | (*1) The linker may eventually be able to relax seth/add3 -> ld24. | |
332 | (*2) The linker may eventually be able to relax seth/add3/jl -> bl. | |
333 | ||
334 | Internally these are recorded as TARGET_ADDR{24,32} and | |
335 | TARGET_CALL{26,32}. | |
336 | ||
337 | The __model__ attribute can be used to select the code model to use when | |
338 | accessing particular objects. */ | |
339 | ||
340 | enum m32r_model { M32R_MODEL_SMALL, M32R_MODEL_MEDIUM, M32R_MODEL_LARGE }; | |
341 | ||
342 | extern enum m32r_model m32r_model; | |
ad126521 | 343 | #define TARGET_MODEL_SMALL (m32r_model == M32R_MODEL_SMALL) |
8c5ca3b9 | 344 | #define TARGET_MODEL_MEDIUM (m32r_model == M32R_MODEL_MEDIUM) |
ad126521 KI |
345 | #define TARGET_MODEL_LARGE (m32r_model == M32R_MODEL_LARGE) |
346 | #define TARGET_ADDR24 (m32r_model == M32R_MODEL_SMALL) | |
347 | #define TARGET_ADDR32 (! TARGET_ADDR24) | |
348 | #define TARGET_CALL26 (! TARGET_CALL32) | |
349 | #define TARGET_CALL32 (m32r_model == M32R_MODEL_LARGE) | |
8c5ca3b9 DE |
350 | |
351 | /* The default is the small model. */ | |
56e2e762 | 352 | #ifndef M32R_MODEL_DEFAULT |
8c5ca3b9 | 353 | #define M32R_MODEL_DEFAULT "small" |
56e2e762 | 354 | #endif |
8c5ca3b9 DE |
355 | |
356 | /* Small Data Area | |
357 | ||
358 | The SDA consists of sections .sdata, .sbss, and .scommon. | |
359 | .scommon isn't a real section, symbols in it have their section index | |
360 | set to SHN_M32R_SCOMMON, though support for it exists in the linker script. | |
361 | ||
362 | Two switches control the SDA: | |
363 | ||
364 | -G NNN - specifies the maximum size of variable to go in the SDA | |
365 | ||
366 | -msdata=foo - specifies how such variables are handled | |
367 | ||
368 | -msdata=none - small data area is disabled | |
369 | ||
370 | -msdata=sdata - small data goes in the SDA, special code isn't | |
371 | generated to use it, and special relocs aren't | |
372 | generated | |
373 | ||
374 | -msdata=use - small data goes in the SDA, special code is generated | |
375 | to use the SDA and special relocs are generated | |
376 | ||
377 | The SDA is not multilib'd, it isn't necessary. | |
378 | MULTILIB_EXTRA_OPTS is set in tmake_file to -msdata=sdata so multilib'd | |
379 | libraries have small data in .sdata/SHN_M32R_SCOMMON so programs that use | |
380 | -msdata=use will successfully link with them (references in header files | |
381 | will cause the compiler to emit code that refers to library objects in | |
382 | .data). ??? There can be a problem if the user passes a -G value greater | |
383 | than the default and a library object in a header file is that size. | |
384 | The default is 8 so this should be rare - if it occurs the user | |
ad126521 | 385 | is required to rebuild the libraries or use a smaller value for -G. */ |
8c5ca3b9 DE |
386 | |
387 | /* Maximum size of variables that go in .sdata/.sbss. | |
388 | The -msdata=foo switch also controls how small variables are handled. */ | |
56e2e762 | 389 | #ifndef SDATA_DEFAULT_SIZE |
8c5ca3b9 | 390 | #define SDATA_DEFAULT_SIZE 8 |
56e2e762 | 391 | #endif |
8c5ca3b9 | 392 | |
8c5ca3b9 DE |
393 | enum m32r_sdata { M32R_SDATA_NONE, M32R_SDATA_SDATA, M32R_SDATA_USE }; |
394 | ||
395 | extern enum m32r_sdata m32r_sdata; | |
ad126521 | 396 | #define TARGET_SDATA_NONE (m32r_sdata == M32R_SDATA_NONE) |
8c5ca3b9 | 397 | #define TARGET_SDATA_SDATA (m32r_sdata == M32R_SDATA_SDATA) |
ad126521 | 398 | #define TARGET_SDATA_USE (m32r_sdata == M32R_SDATA_USE) |
8c5ca3b9 DE |
399 | |
400 | /* Default is to disable the SDA | |
401 | [for upward compatibility with previous toolchains]. */ | |
56e2e762 | 402 | #ifndef M32R_SDATA_DEFAULT |
8c5ca3b9 | 403 | #define M32R_SDATA_DEFAULT "none" |
56e2e762 | 404 | #endif |
8c5ca3b9 DE |
405 | |
406 | /* Define this macro as a C expression for the initializer of an array of | |
2b7972b0 | 407 | strings to tell the driver program which options are defaults for this |
8c5ca3b9 DE |
408 | target and thus do not need to be handled specially when using |
409 | `MULTILIB_OPTIONS'. */ | |
56e2e762 NC |
410 | #ifndef SUBTARGET_MULTILIB_DEFAULTS |
411 | #define SUBTARGET_MULTILIB_DEFAULTS | |
412 | #endif | |
413 | ||
414 | #ifndef MULTILIB_DEFAULTS | |
415 | #define MULTILIB_DEFAULTS { "mmodel=small" SUBTARGET_MULTILIB_DEFAULTS } | |
416 | #endif | |
8c5ca3b9 DE |
417 | |
418 | /* Sometimes certain combinations of command options do not make | |
419 | sense on a particular target machine. You can define a macro | |
420 | `OVERRIDE_OPTIONS' to take account of this. This macro, if | |
421 | defined, is executed once just after all the command options have | |
422 | been parsed. | |
423 | ||
424 | Don't use this macro to turn on various extra optimizations for | |
425 | `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */ | |
426 | ||
56e2e762 NC |
427 | #ifndef SUBTARGET_OVERRIDE_OPTIONS |
428 | #define SUBTARGET_OVERRIDE_OPTIONS | |
429 | #endif | |
430 | ||
431 | #define OVERRIDE_OPTIONS \ | |
432 | do \ | |
433 | { \ | |
434 | /* These need to be done at start up. \ | |
435 | It's convenient to do them here. */ \ | |
436 | m32r_init (); \ | |
437 | SUBTARGET_OVERRIDE_OPTIONS \ | |
438 | } \ | |
439 | while (0) | |
440 | ||
441 | #ifndef SUBTARGET_OPTIMIZATION_OPTIONS | |
442 | #define SUBTARGET_OPTIMIZATION_OPTIONS | |
443 | #endif | |
444 | ||
445 | #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \ | |
446 | do \ | |
447 | { \ | |
448 | if (LEVEL == 1) \ | |
449 | flag_regmove = TRUE; \ | |
450 | \ | |
451 | if (SIZE) \ | |
452 | { \ | |
453 | flag_omit_frame_pointer = TRUE; \ | |
454 | flag_strength_reduce = FALSE; \ | |
455 | } \ | |
456 | \ | |
457 | SUBTARGET_OPTIMIZATION_OPTIONS \ | |
458 | } \ | |
459 | while (0) | |
8c5ca3b9 DE |
460 | |
461 | /* Define this macro if debugging can be performed even without a | |
7ec022b2 | 462 | frame pointer. If this macro is defined, GCC will turn on the |
8c5ca3b9 DE |
463 | `-fomit-frame-pointer' option whenever `-O' is specified. */ |
464 | #define CAN_DEBUG_WITHOUT_FP | |
465 | \f | |
466 | /* Target machine storage layout. */ | |
467 | ||
8c5ca3b9 DE |
468 | /* Define this if most significant bit is lowest numbered |
469 | in instructions that operate on numbered bit-fields. */ | |
470 | #define BITS_BIG_ENDIAN 1 | |
471 | ||
472 | /* Define this if most significant byte of a word is the lowest numbered. */ | |
ad126521 | 473 | #define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0) |
8c5ca3b9 DE |
474 | |
475 | /* Define this if most significant word of a multiword number is the lowest | |
476 | numbered. */ | |
ad126521 | 477 | #define WORDS_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0) |
8c5ca3b9 DE |
478 | |
479 | /* Define this macro if WORDS_BIG_ENDIAN is not constant. This must | |
480 | be a constant value with the same meaning as WORDS_BIG_ENDIAN, | |
481 | which will be used only when compiling libgcc2.c. Typically the | |
482 | value will be set based on preprocessor defines. */ | |
483 | /*#define LIBGCC2_WORDS_BIG_ENDIAN 1*/ | |
484 | ||
8c5ca3b9 DE |
485 | /* Width of a word, in units (bytes). */ |
486 | #define UNITS_PER_WORD 4 | |
487 | ||
488 | /* Define this macro if it is advisable to hold scalars in registers | |
489 | in a wider mode than that declared by the program. In such cases, | |
490 | the value is constrained to be within the bounds of the declared | |
491 | type, but kept valid in the wider mode. The signedness of the | |
492 | extension may differ from that of the type. */ | |
56e2e762 NC |
493 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ |
494 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
495 | && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ | |
496 | { \ | |
497 | (MODE) = SImode; \ | |
498 | } | |
8c5ca3b9 DE |
499 | |
500 | /* Define this macro if the promotion described by `PROMOTE_MODE' | |
501 | should also be done for outgoing function arguments. */ | |
502 | /*#define PROMOTE_FUNCTION_ARGS*/ | |
503 | ||
504 | /* Likewise, if the function return value is promoted. | |
505 | If defined, FUNCTION_VALUE must perform the same promotions done by | |
506 | PROMOTE_MODE. */ | |
507 | /*#define PROMOTE_FUNCTION_RETURN*/ | |
508 | ||
8c5ca3b9 DE |
509 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
510 | #define PARM_BOUNDARY 32 | |
511 | ||
512 | /* Boundary (in *bits*) on which stack pointer should be aligned. */ | |
513 | #define STACK_BOUNDARY 32 | |
514 | ||
515 | /* ALIGN FRAMES on word boundaries */ | |
ad126521 | 516 | #define M32R_STACK_ALIGN(LOC) (((LOC) + 3) & ~ 3) |
8c5ca3b9 DE |
517 | |
518 | /* Allocation boundary (in *bits*) for the code of a function. */ | |
519 | #define FUNCTION_BOUNDARY 32 | |
520 | ||
521 | /* Alignment of field after `int : 0' in a structure. */ | |
522 | #define EMPTY_FIELD_BOUNDARY 32 | |
523 | ||
524 | /* Every structure's size must be a multiple of this. */ | |
525 | #define STRUCTURE_SIZE_BOUNDARY 8 | |
526 | ||
43a88a8c | 527 | /* A bit-field declared as `int' forces `int' alignment for the struct. */ |
8c5ca3b9 DE |
528 | #define PCC_BITFIELD_TYPE_MATTERS 1 |
529 | ||
530 | /* No data type wants to be aligned rounder than this. */ | |
531 | #define BIGGEST_ALIGNMENT 32 | |
532 | ||
533 | /* The best alignment to use in cases where we have a choice. */ | |
534 | #define FASTEST_ALIGNMENT 32 | |
535 | ||
536 | /* Make strings word-aligned so strcpy from constants will be faster. */ | |
56e2e762 | 537 | #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ |
8c5ca3b9 DE |
538 | ((TREE_CODE (EXP) == STRING_CST \ |
539 | && (ALIGN) < FASTEST_ALIGNMENT) \ | |
540 | ? FASTEST_ALIGNMENT : (ALIGN)) | |
541 | ||
542 | /* Make arrays of chars word-aligned for the same reasons. */ | |
56e2e762 NC |
543 | #define DATA_ALIGNMENT(TYPE, ALIGN) \ |
544 | (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
545 | && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ | |
8c5ca3b9 DE |
546 | && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) |
547 | ||
548 | /* Set this nonzero if move instructions will actually fail to work | |
549 | when given unaligned data. */ | |
550 | #define STRICT_ALIGNMENT 1 | |
ad126521 KI |
551 | |
552 | /* Define LAVEL_ALIGN to calculate code length of PNOP at labels. */ | |
553 | #define LABEL_ALIGN(insn) 2 | |
8c5ca3b9 DE |
554 | \f |
555 | /* Layout of source language data types. */ | |
556 | ||
557 | #define SHORT_TYPE_SIZE 16 | |
558 | #define INT_TYPE_SIZE 32 | |
559 | #define LONG_TYPE_SIZE 32 | |
560 | #define LONG_LONG_TYPE_SIZE 64 | |
561 | #define FLOAT_TYPE_SIZE 32 | |
562 | #define DOUBLE_TYPE_SIZE 64 | |
563 | #define LONG_DOUBLE_TYPE_SIZE 64 | |
564 | ||
565 | /* Define this as 1 if `char' should by default be signed; else as 0. */ | |
566 | #define DEFAULT_SIGNED_CHAR 1 | |
567 | ||
568 | #define SIZE_TYPE "long unsigned int" | |
569 | #define PTRDIFF_TYPE "long int" | |
570 | #define WCHAR_TYPE "short unsigned int" | |
571 | #define WCHAR_TYPE_SIZE 16 | |
8c5ca3b9 DE |
572 | \f |
573 | /* Standard register usage. */ | |
574 | ||
575 | /* Number of actual hardware registers. | |
576 | The hardware registers are assigned numbers for the compiler | |
577 | from 0 to just below FIRST_PSEUDO_REGISTER. | |
578 | All registers that the compiler knows about must be given numbers, | |
579 | even those that are not normally considered general registers. */ | |
56e2e762 NC |
580 | |
581 | #define M32R_NUM_REGISTERS 19 | |
582 | ||
583 | #ifndef SUBTARGET_NUM_REGISTERS | |
584 | #define SUBTARGET_NUM_REGISTERS 0 | |
585 | #endif | |
586 | ||
587 | #define FIRST_PSEUDO_REGISTER (M32R_NUM_REGISTERS + SUBTARGET_NUM_REGISTERS) | |
2b7972b0 | 588 | |
8c5ca3b9 DE |
589 | /* 1 for registers that have pervasive standard uses |
590 | and are not available for the register allocator. | |
591 | ||
592 | 0-3 - arguments/results | |
593 | 4-5 - call used [4 is used as a tmp during prologue/epilogue generation] | |
594 | 6 - call used, gptmp | |
595 | 7 - call used, static chain pointer | |
596 | 8-11 - call saved | |
597 | 12 - call saved [reserved for global pointer] | |
598 | 13 - frame pointer | |
599 | 14 - subroutine link register | |
600 | 15 - stack pointer | |
601 | 16 - arg pointer | |
602 | 17 - carry flag | |
56e2e762 | 603 | 18 - accumulator |
de41e41c | 604 | 19 - accumulator 1 in the m32r/x |
8c5ca3b9 DE |
605 | By default, the extension registers are not available. */ |
606 | ||
56e2e762 NC |
607 | #ifndef SUBTARGET_FIXED_REGISTERS |
608 | #define SUBTARGET_FIXED_REGISTERS | |
609 | #endif | |
8c5ca3b9 | 610 | |
56e2e762 NC |
611 | #define FIXED_REGISTERS \ |
612 | { \ | |
613 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
614 | 0, 0, 0, 0, 0, 0, 0, 1, \ | |
615 | 1, 1, 1 \ | |
616 | SUBTARGET_FIXED_REGISTERS \ | |
617 | } | |
2b7972b0 | 618 | |
8c5ca3b9 DE |
619 | /* 1 for registers not available across function calls. |
620 | These must include the FIXED_REGISTERS and also any | |
621 | registers that can be used without being saved. | |
622 | The latter must include the registers where values are returned | |
623 | and the register where structure-value addresses are passed. | |
624 | Aside from that, you can include as many other registers as you like. */ | |
625 | ||
56e2e762 NC |
626 | #ifndef SUBTARGET_CALL_USED_REGISTERS |
627 | #define SUBTARGET_CALL_USED_REGISTERS | |
628 | #endif | |
8c5ca3b9 | 629 | |
56e2e762 NC |
630 | #define CALL_USED_REGISTERS \ |
631 | { \ | |
632 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
633 | 0, 0, 0, 0, 0, 0, 1, 1, \ | |
634 | 1, 1, 1 \ | |
635 | SUBTARGET_CALL_USED_REGISTERS \ | |
636 | } | |
2b7972b0 | 637 | |
8c5ca3b9 DE |
638 | /* Zero or more C statements that may conditionally modify two variables |
639 | `fixed_regs' and `call_used_regs' (both of type `char []') after they | |
640 | have been initialized from the two preceding macros. | |
641 | ||
642 | This is necessary in case the fixed or call-clobbered registers depend | |
643 | on target flags. | |
644 | ||
645 | You need not define this macro if it has no work to do. */ | |
646 | ||
56e2e762 NC |
647 | #ifdef SUBTARGET_CONDITIONAL_REGISTER_USAGE |
648 | #define CONDITIONAL_REGISTER_USAGE SUBTARGET_CONDITIONAL_REGISTER_USAGE | |
ad126521 KI |
649 | #else |
650 | #define CONDITIONAL_REGISTER_USAGE \ | |
651 | do \ | |
652 | { \ | |
653 | if (flag_pic) \ | |
654 | fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ | |
655 | } \ | |
656 | while (0) | |
56e2e762 | 657 | #endif |
8c5ca3b9 DE |
658 | |
659 | /* If defined, an initializer for a vector of integers, containing the | |
7ec022b2 | 660 | numbers of hard registers in the order in which GCC should |
8c5ca3b9 | 661 | prefer to use them (from most preferred to least). */ |
56e2e762 NC |
662 | |
663 | #ifndef SUBTARGET_REG_ALLOC_ORDER | |
664 | #define SUBTARGET_REG_ALLOC_ORDER | |
665 | #endif | |
666 | ||
ad126521 | 667 | #if 1 /* Better for int code. */ |
56e2e762 NC |
668 | #define REG_ALLOC_ORDER \ |
669 | { \ | |
670 | 4, 5, 6, 7, 2, 3, 8, 9, 10, \ | |
671 | 11, 12, 13, 14, 0, 1, 15, 16, 17, 18 \ | |
672 | SUBTARGET_REG_ALLOC_ORDER \ | |
673 | } | |
674 | ||
ad126521 | 675 | #else /* Better for fp code at expense of int code. */ |
56e2e762 NC |
676 | #define REG_ALLOC_ORDER \ |
677 | { \ | |
678 | 0, 1, 2, 3, 4, 5, 6, 7, 8, \ | |
679 | 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 \ | |
680 | SUBTARGET_REG_ALLOC_ORDER \ | |
681 | } | |
8c5ca3b9 DE |
682 | #endif |
683 | ||
684 | /* Return number of consecutive hard regs needed starting at reg REGNO | |
685 | to hold something of mode MODE. | |
686 | This is ordinarily the length in words of a value of mode MODE | |
687 | but can be less for certain modes in special long registers. */ | |
688 | #define HARD_REGNO_NREGS(REGNO, MODE) \ | |
ad126521 | 689 | ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
8c5ca3b9 DE |
690 | |
691 | /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. */ | |
0139adca | 692 | extern const unsigned int m32r_hard_regno_mode_ok[FIRST_PSEUDO_REGISTER]; |
8c5ca3b9 DE |
693 | extern unsigned int m32r_mode_class[]; |
694 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
ad126521 | 695 | ((m32r_hard_regno_mode_ok[REGNO] & m32r_mode_class[MODE]) != 0) |
8c5ca3b9 DE |
696 | |
697 | /* A C expression that is nonzero if it is desirable to choose | |
698 | register allocation so as to avoid move instructions between a | |
699 | value of mode MODE1 and a value of mode MODE2. | |
700 | ||
701 | If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, | |
702 | MODE2)' are ever different for any R, then `MODES_TIEABLE_P (MODE1, | |
703 | MODE2)' must be zero. */ | |
704 | ||
705 | /* Tie QI/HI/SI modes together. */ | |
ad126521 KI |
706 | #define MODES_TIEABLE_P(MODE1, MODE2) \ |
707 | ( GET_MODE_CLASS (MODE1) == MODE_INT \ | |
708 | && GET_MODE_CLASS (MODE2) == MODE_INT \ | |
709 | && GET_MODE_SIZE (MODE1) <= UNITS_PER_WORD \ | |
710 | && GET_MODE_SIZE (MODE2) <= UNITS_PER_WORD) | |
a398a822 KI |
711 | |
712 | #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \ | |
713 | m32r_hard_regno_rename_ok (OLD_REG, NEW_REG) | |
8c5ca3b9 DE |
714 | \f |
715 | /* Register classes and constants. */ | |
716 | ||
717 | /* Define the classes of registers for register constraints in the | |
718 | machine description. Also define ranges of constants. | |
719 | ||
720 | One of the classes must always be named ALL_REGS and include all hard regs. | |
721 | If there is more than one class, another class must be named NO_REGS | |
722 | and contain no registers. | |
723 | ||
724 | The name GENERAL_REGS must be the name of a class (or an alias for | |
725 | another name such as ALL_REGS). This is the class of registers | |
726 | that is allowed by "g" or "r" in a register constraint. | |
727 | Also, registers outside this class are allocated only when | |
728 | instructions express preferences for them. | |
729 | ||
730 | The classes must be numbered in nondecreasing order; that is, | |
731 | a larger-numbered class must never be contained completely | |
732 | in a smaller-numbered class. | |
733 | ||
734 | For any two classes, it is very desirable that there be another | |
735 | class that represents their union. | |
736 | ||
737 | It is important that any condition codes have class NO_REGS. | |
738 | See `register_operand'. */ | |
739 | ||
56e2e762 NC |
740 | enum reg_class |
741 | { | |
742 | NO_REGS, CARRY_REG, ACCUM_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES | |
8c5ca3b9 DE |
743 | }; |
744 | ||
56e2e762 | 745 | #define N_REG_CLASSES ((int) LIM_REG_CLASSES) |
8c5ca3b9 DE |
746 | |
747 | /* Give names of register classes as strings for dump file. */ | |
748 | #define REG_CLASS_NAMES \ | |
56e2e762 | 749 | { "NO_REGS", "CARRY_REG", "ACCUM_REGS", "GENERAL_REGS", "ALL_REGS" } |
8c5ca3b9 DE |
750 | |
751 | /* Define which registers fit in which classes. | |
752 | This is an initializer for a vector of HARD_REG_SET | |
753 | of length N_REG_CLASSES. */ | |
754 | ||
56e2e762 NC |
755 | #ifndef SUBTARGET_REG_CLASS_CARRY |
756 | #define SUBTARGET_REG_CLASS_CARRY 0 | |
757 | #endif | |
758 | ||
759 | #ifndef SUBTARGET_REG_CLASS_ACCUM | |
760 | #define SUBTARGET_REG_CLASS_ACCUM 0 | |
761 | #endif | |
762 | ||
763 | #ifndef SUBTARGET_REG_CLASS_GENERAL | |
764 | #define SUBTARGET_REG_CLASS_GENERAL 0 | |
765 | #endif | |
766 | ||
767 | #ifndef SUBTARGET_REG_CLASS_ALL | |
768 | #define SUBTARGET_REG_CLASS_ALL 0 | |
769 | #endif | |
8c5ca3b9 | 770 | |
56e2e762 NC |
771 | #define REG_CLASS_CONTENTS \ |
772 | { \ | |
773 | { 0x00000 }, \ | |
774 | { 0x20000 | SUBTARGET_REG_CLASS_CARRY }, \ | |
775 | { 0x40000 | SUBTARGET_REG_CLASS_ACCUM }, \ | |
776 | { 0x1ffff | SUBTARGET_REG_CLASS_GENERAL }, \ | |
777 | { 0x7ffff | SUBTARGET_REG_CLASS_ALL }, \ | |
778 | } | |
2b7972b0 | 779 | |
8c5ca3b9 DE |
780 | /* The same information, inverted: |
781 | Return the class number of the smallest class containing | |
782 | reg number REGNO. This could be a conditional expression | |
783 | or could index an array. */ | |
2b7972b0 | 784 | extern enum reg_class m32r_regno_reg_class[FIRST_PSEUDO_REGISTER]; |
56e2e762 | 785 | #define REGNO_REG_CLASS(REGNO) (m32r_regno_reg_class[REGNO]) |
8c5ca3b9 DE |
786 | |
787 | /* The class value for index registers, and the one for base regs. */ | |
788 | #define INDEX_REG_CLASS GENERAL_REGS | |
789 | #define BASE_REG_CLASS GENERAL_REGS | |
790 | ||
ad126521 KI |
791 | #define REG_CLASS_FROM_LETTER(C) \ |
792 | ( (C) == 'c' ? CARRY_REG \ | |
793 | : (C) == 'a' ? ACCUM_REGS \ | |
794 | : NO_REGS) | |
8c5ca3b9 DE |
795 | |
796 | /* These assume that REGNO is a hard or pseudo reg number. | |
797 | They give nonzero only if REGNO is a hard reg of the suitable class | |
798 | or a pseudo reg currently allocated to a suitable hard reg. | |
799 | Since they use reg_renumber, they are safe only once reg_renumber | |
800 | has been allocated, which happens in local-alloc.c. */ | |
801 | #define REGNO_OK_FOR_BASE_P(REGNO) \ | |
ad126521 KI |
802 | ((REGNO) < FIRST_PSEUDO_REGISTER \ |
803 | ? GPR_P (REGNO) || (REGNO) == ARG_POINTER_REGNUM \ | |
804 | : GPR_P (reg_renumber[REGNO])) | |
805 | ||
8c5ca3b9 DE |
806 | #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO) |
807 | ||
808 | /* Given an rtx X being reloaded into a reg required to be | |
809 | in class CLASS, return the class of reg to actually use. | |
810 | In general this is just CLASS; but on some machines | |
811 | in some cases it is preferable to use a more restrictive class. */ | |
ad126521 | 812 | #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS) |
8c5ca3b9 DE |
813 | |
814 | /* Return the maximum number of consecutive registers | |
815 | needed to represent mode MODE in a register of class CLASS. */ | |
816 | #define CLASS_MAX_NREGS(CLASS, MODE) \ | |
ad126521 | 817 | ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
8c5ca3b9 DE |
818 | |
819 | /* The letters I, J, K, L, M, N, O, P in a register constraint string | |
820 | can be used to stand for particular ranges of immediate operands. | |
821 | This macro defines what the ranges are. | |
822 | C is the letter, and VALUE is a constant value. | |
823 | Return 1 if VALUE is in the range specified by C. */ | |
824 | /* 'I' is used for 8 bit signed immediates. | |
825 | 'J' is used for 16 bit signed immediates. | |
826 | 'K' is used for 16 bit unsigned immediates. | |
827 | 'L' is used for 16 bit immediates left shifted by 16 (sign ???). | |
828 | 'M' is used for 24 bit unsigned immediates. | |
829 | 'N' is used for any 32 bit non-symbolic value. | |
830 | 'O' is used for 5 bit unsigned immediates (shift count). | |
831 | 'P' is used for 16 bit signed immediates for compares | |
832 | (values in the range -32767 to +32768). */ | |
833 | ||
56e2e762 NC |
834 | /* Return true if a value is inside a range. */ |
835 | #define IN_RANGE_P(VALUE, LOW, HIGH) \ | |
836 | (((unsigned HOST_WIDE_INT)((VALUE) - (LOW))) \ | |
837 | <= ((unsigned HOST_WIDE_INT)((HIGH) - (LOW)))) | |
838 | ||
839 | /* Local to this file. */ | |
ad126521 KI |
840 | #define INT8_P(X) ((X) >= - 0x80 && (X) <= 0x7f) |
841 | #define INT16_P(X) ((X) >= - 0x8000 && (X) <= 0x7fff) | |
842 | #define CMP_INT16_P(X) ((X) >= - 0x7fff && (X) <= 0x8000) | |
843 | #define UPPER16_P(X) (((X) & 0xffff) == 0 \ | |
844 | && ((X) >> 16) >= - 0x8000 \ | |
845 | && ((X) >> 16) <= 0x7fff) | |
846 | #define UINT16_P(X) (((unsigned HOST_WIDE_INT) (X)) <= 0x0000ffff) | |
847 | #define UINT24_P(X) (((unsigned HOST_WIDE_INT) (X)) <= 0x00ffffff) | |
848 | #define UINT32_P(X) (((unsigned HOST_WIDE_INT) (X)) <= 0xffffffff) | |
849 | #define UINT5_P(X) ((X) >= 0 && (X) < 32) | |
5b8ae21f | 850 | #define INVERTED_SIGNED_8BIT(VAL) ((VAL) >= -127 && (VAL) <= 128) |
8c5ca3b9 | 851 | |
5b8ae21f | 852 | #define CONST_OK_FOR_LETTER_P(VALUE, C) \ |
ad126521 KI |
853 | ( (C) == 'I' ? INT8_P (VALUE) \ |
854 | : (C) == 'J' ? INT16_P (VALUE) \ | |
855 | : (C) == 'K' ? UINT16_P (VALUE) \ | |
856 | : (C) == 'L' ? UPPER16_P (VALUE) \ | |
857 | : (C) == 'M' ? UINT24_P (VALUE) \ | |
858 | : (C) == 'N' ? INVERTED_SIGNED_8BIT (VALUE) \ | |
859 | : (C) == 'O' ? UINT5_P (VALUE) \ | |
860 | : (C) == 'P' ? CMP_INT16_P (VALUE) \ | |
861 | : 0) | |
8c5ca3b9 DE |
862 | |
863 | /* Similar, but for floating constants, and defining letters G and H. | |
864 | Here VALUE is the CONST_DOUBLE rtx itself. | |
865 | For the m32r, handle a few constants inline. | |
866 | ??? We needn't treat DI and DF modes differently, but for now we do. */ | |
ad126521 KI |
867 | #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ |
868 | ( (C) == 'G' ? easy_di_const (VALUE) \ | |
869 | : (C) == 'H' ? easy_df_const (VALUE) \ | |
870 | : 0) | |
8c5ca3b9 DE |
871 | |
872 | /* A C expression that defines the optional machine-dependent constraint | |
873 | letters that can be used to segregate specific types of operands, | |
874 | usually memory references, for the target machine. It should return 1 if | |
875 | VALUE corresponds to the operand type represented by the constraint letter | |
876 | C. If C is not defined as an extra constraint, the value returned should | |
877 | be 0 regardless of VALUE. */ | |
878 | /* Q is for symbolic addresses loadable with ld24. | |
2b7972b0 | 879 | R is for symbolic addresses when ld24 can't be used. |
56e2e762 | 880 | S is for stores with pre {inc,dec}rement |
5b8ae21f | 881 | T is for indirect of a pointer. |
56e2e762 | 882 | U is for loads with post increment. */ |
5b8ae21f MM |
883 | |
884 | #define EXTRA_CONSTRAINT(VALUE, C) \ | |
ad126521 | 885 | ( (C) == 'Q' ? ((TARGET_ADDR24 && GET_CODE (VALUE) == LABEL_REF) \ |
56e2e762 | 886 | || addr24_operand (VALUE, VOIDmode)) \ |
ad126521 | 887 | : (C) == 'R' ? ((TARGET_ADDR32 && GET_CODE (VALUE) == LABEL_REF) \ |
56e2e762 | 888 | || addr32_operand (VALUE, VOIDmode)) \ |
ad126521 | 889 | : (C) == 'S' ? (GET_CODE (VALUE) == MEM \ |
56e2e762 NC |
890 | && STORE_PREINC_PREDEC_P (GET_MODE (VALUE), \ |
891 | XEXP (VALUE, 0))) \ | |
ad126521 | 892 | : (C) == 'T' ? (GET_CODE (VALUE) == MEM \ |
56e2e762 | 893 | && memreg_operand (VALUE, GET_MODE (VALUE))) \ |
ad126521 | 894 | : (C) == 'U' ? (GET_CODE (VALUE) == MEM \ |
56e2e762 NC |
895 | && LOAD_POSTINC_P (GET_MODE (VALUE), \ |
896 | XEXP (VALUE, 0))) \ | |
ad126521 | 897 | : 0) |
8c5ca3b9 DE |
898 | \f |
899 | /* Stack layout and stack pointer usage. */ | |
900 | ||
901 | /* Define this macro if pushing a word onto the stack moves the stack | |
902 | pointer to a smaller address. */ | |
903 | #define STACK_GROWS_DOWNWARD | |
904 | ||
8c5ca3b9 DE |
905 | /* Offset from frame pointer to start allocating local variables at. |
906 | If FRAME_GROWS_DOWNWARD, this is the offset to the END of the | |
907 | first local allocated. Otherwise, it is the offset to the BEGINNING | |
908 | of the first local allocated. */ | |
909 | /* The frame pointer points at the same place as the stack pointer, except if | |
910 | alloca has been called. */ | |
911 | #define STARTING_FRAME_OFFSET \ | |
ad126521 | 912 | M32R_STACK_ALIGN (current_function_outgoing_args_size) |
8c5ca3b9 DE |
913 | |
914 | /* Offset from the stack pointer register to the first location at which | |
915 | outgoing arguments are placed. */ | |
916 | #define STACK_POINTER_OFFSET 0 | |
917 | ||
918 | /* Offset of first parameter from the argument pointer register value. */ | |
919 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
920 | ||
8c5ca3b9 DE |
921 | /* Register to use for pushing function arguments. */ |
922 | #define STACK_POINTER_REGNUM 15 | |
923 | ||
924 | /* Base register for access to local variables of the function. */ | |
925 | #define FRAME_POINTER_REGNUM 13 | |
926 | ||
927 | /* Base register for access to arguments of the function. */ | |
928 | #define ARG_POINTER_REGNUM 16 | |
929 | ||
ad126521 KI |
930 | /* Register in which static-chain is passed to a function. |
931 | This must not be a register used by the prologue. */ | |
932 | #define STATIC_CHAIN_REGNUM 7 | |
8c5ca3b9 DE |
933 | |
934 | /* These aren't official macros. */ | |
ad126521 KI |
935 | #define PROLOGUE_TMP_REGNUM 4 |
936 | #define RETURN_ADDR_REGNUM 14 | |
937 | /* #define GP_REGNUM 12 */ | |
938 | #define CARRY_REGNUM 17 | |
939 | #define ACCUM_REGNUM 18 | |
940 | #define M32R_MAX_INT_REGS 16 | |
8c5ca3b9 | 941 | |
56e2e762 NC |
942 | #ifndef SUBTARGET_GPR_P |
943 | #define SUBTARGET_GPR_P(REGNO) 0 | |
944 | #endif | |
945 | ||
946 | #ifndef SUBTARGET_ACCUM_P | |
947 | #define SUBTARGET_ACCUM_P(REGNO) 0 | |
948 | #endif | |
949 | ||
950 | #ifndef SUBTARGET_CARRY_P | |
951 | #define SUBTARGET_CARRY_P(REGNO) 0 | |
952 | #endif | |
953 | ||
954 | #define GPR_P(REGNO) (IN_RANGE_P ((REGNO), 0, 15) || SUBTARGET_GPR_P (REGNO)) | |
955 | #define ACCUM_P(REGNO) ((REGNO) == ACCUM_REGNUM || SUBTARGET_ACCUM_P (REGNO)) | |
956 | #define CARRY_P(REGNO) ((REGNO) == CARRY_REGNUM || SUBTARGET_CARRY_P (REGNO)) | |
8c5ca3b9 DE |
957 | \f |
958 | /* Eliminating the frame and arg pointers. */ | |
959 | ||
960 | /* A C expression which is nonzero if a function must have and use a | |
961 | frame pointer. This expression is evaluated in the reload pass. | |
962 | If its value is nonzero the function will have a frame pointer. */ | |
56e2e762 | 963 | #define FRAME_POINTER_REQUIRED current_function_calls_alloca |
8c5ca3b9 DE |
964 | |
965 | #if 0 | |
966 | /* C statement to store the difference between the frame pointer | |
967 | and the stack pointer values immediately after the function prologue. | |
968 | If `ELIMINABLE_REGS' is defined, this macro will be not be used and | |
969 | need not be defined. */ | |
970 | #define INITIAL_FRAME_POINTER_OFFSET(VAR) \ | |
971 | ((VAR) = m32r_compute_frame_size (get_frame_size ())) | |
972 | #endif | |
973 | ||
974 | /* If defined, this macro specifies a table of register pairs used to | |
975 | eliminate unneeded registers that point into the stack frame. If | |
976 | it is not defined, the only elimination attempted by the compiler | |
977 | is to replace references to the frame pointer with references to | |
978 | the stack pointer. | |
979 | ||
980 | Note that the elimination of the argument pointer with the stack | |
981 | pointer is specified first since that is the preferred elimination. */ | |
982 | ||
56e2e762 NC |
983 | #define ELIMINABLE_REGS \ |
984 | {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ | |
985 | { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ | |
986 | { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM }} | |
8c5ca3b9 | 987 | |
a0ab749a | 988 | /* A C expression that returns nonzero if the compiler is allowed to |
8c5ca3b9 DE |
989 | try to replace register number FROM-REG with register number |
990 | TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is | |
991 | defined, and will usually be the constant 1, since most of the | |
992 | cases preventing register elimination are things that the compiler | |
993 | already knows about. */ | |
994 | ||
56e2e762 NC |
995 | #define CAN_ELIMINATE(FROM, TO) \ |
996 | ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \ | |
997 | ? ! frame_pointer_needed \ | |
998 | : 1) | |
8c5ca3b9 DE |
999 | |
1000 | /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It | |
1001 | specifies the initial difference between the specified pair of | |
1002 | registers. This macro must be defined if `ELIMINABLE_REGS' is | |
1003 | defined. */ | |
1004 | ||
ad126521 KI |
1005 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
1006 | do \ | |
1007 | { \ | |
1008 | int size = m32r_compute_frame_size (get_frame_size ()); \ | |
1009 | \ | |
1010 | if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ | |
1011 | (OFFSET) = 0; \ | |
1012 | else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \ | |
1013 | (OFFSET) = size - current_function_pretend_args_size; \ | |
1014 | else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ | |
1015 | (OFFSET) = size - current_function_pretend_args_size; \ | |
1016 | else \ | |
1017 | abort (); \ | |
1018 | } \ | |
1019 | while (0) | |
8c5ca3b9 DE |
1020 | \f |
1021 | /* Function argument passing. */ | |
1022 | ||
1023 | /* When a prototype says `char' or `short', really pass an `int'. */ | |
cb560352 | 1024 | #define PROMOTE_PROTOTYPES 1 |
8c5ca3b9 DE |
1025 | |
1026 | /* If defined, the maximum amount of space required for outgoing | |
1027 | arguments will be computed and placed into the variable | |
1028 | `current_function_outgoing_args_size'. No space will be pushed | |
1029 | onto the stack for each call; instead, the function prologue should | |
1030 | increase the stack frame size by this amount. */ | |
f73ad30e | 1031 | #define ACCUMULATE_OUTGOING_ARGS 1 |
8c5ca3b9 | 1032 | |
8c5ca3b9 DE |
1033 | /* Value is the number of bytes of arguments automatically |
1034 | popped when returning from a subroutine call. | |
1035 | FUNDECL is the declaration node of the function (as a tree), | |
1036 | FUNTYPE is the data type of the function (as a tree), | |
1037 | or for a library call it is an identifier node for the subroutine name. | |
1038 | SIZE is the number of bytes of arguments passed on the stack. */ | |
1039 | #define RETURN_POPS_ARGS(DECL, FUNTYPE, SIZE) 0 | |
1040 | ||
4abfe235 | 1041 | /* Nonzero if we do not know how to pass TYPE solely in registers. */ |
56e2e762 | 1042 | #define MUST_PASS_IN_STACK(MODE, TYPE) \ |
4abfe235 NC |
1043 | ((TYPE) != 0 \ |
1044 | && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ | |
1045 | || TREE_ADDRESSABLE (TYPE))) | |
1046 | ||
8c5ca3b9 DE |
1047 | /* Define a data type for recording info about an argument list |
1048 | during the scan of that argument list. This data type should | |
1049 | hold all necessary information about the function itself | |
1050 | and about the args processed so far, enough to enable macros | |
1051 | such as FUNCTION_ARG to determine where the next arg should go. */ | |
1052 | #define CUMULATIVE_ARGS int | |
1053 | ||
1054 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
1055 | for a call to a function whose data type is FNTYPE. | |
1056 | For a library call, FNTYPE is 0. */ | |
56e2e762 NC |
1057 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \ |
1058 | ((CUM) = 0) | |
8c5ca3b9 DE |
1059 | |
1060 | /* The number of registers used for parameter passing. Local to this file. */ | |
1061 | #define M32R_MAX_PARM_REGS 4 | |
1062 | ||
1063 | /* 1 if N is a possible register number for function argument passing. */ | |
1064 | #define FUNCTION_ARG_REGNO_P(N) \ | |
56e2e762 | 1065 | ((unsigned) (N) < M32R_MAX_PARM_REGS) |
8c5ca3b9 DE |
1066 | |
1067 | /* The ROUND_ADVANCE* macros are local to this file. */ | |
1068 | /* Round SIZE up to a word boundary. */ | |
1069 | #define ROUND_ADVANCE(SIZE) \ | |
56e2e762 | 1070 | (((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
8c5ca3b9 DE |
1071 | |
1072 | /* Round arg MODE/TYPE up to the next word boundary. */ | |
1073 | #define ROUND_ADVANCE_ARG(MODE, TYPE) \ | |
56e2e762 | 1074 | ((MODE) == BLKmode \ |
16f104b3 | 1075 | ? ROUND_ADVANCE ((unsigned int) int_size_in_bytes (TYPE)) \ |
9d303046 | 1076 | : ROUND_ADVANCE ((unsigned int) GET_MODE_SIZE (MODE))) |
8c5ca3b9 DE |
1077 | |
1078 | /* Round CUM up to the necessary point for argument MODE/TYPE. */ | |
8c5ca3b9 | 1079 | #define ROUND_ADVANCE_CUM(CUM, MODE, TYPE) (CUM) |
8c5ca3b9 DE |
1080 | |
1081 | /* Return boolean indicating arg of type TYPE and mode MODE will be passed in | |
1082 | a reg. This includes arguments that have to be passed by reference as the | |
1083 | pointer to them is passed in a reg if one is available (and that is what | |
1084 | we're given). | |
1085 | This macro is only used in this file. */ | |
6c535c69 | 1086 | #define PASS_IN_REG_P(CUM, MODE, TYPE) \ |
56e2e762 | 1087 | (ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) < M32R_MAX_PARM_REGS) |
8c5ca3b9 DE |
1088 | |
1089 | /* Determine where to put an argument to a function. | |
1090 | Value is zero to push the argument on the stack, | |
1091 | or a hard register in which to store the argument. | |
1092 | ||
1093 | MODE is the argument's machine mode. | |
1094 | TYPE is the data type of the argument (as a tree). | |
1095 | This is null for libcalls where that information may | |
1096 | not be available. | |
1097 | CUM is a variable of type CUMULATIVE_ARGS which gives info about | |
1098 | the preceding args and about the function being called. | |
1099 | NAMED is nonzero if this argument is a named parameter | |
1100 | (otherwise it is an extra parameter matching an ellipsis). */ | |
1101 | /* On the M32R the first M32R_MAX_PARM_REGS args are normally in registers | |
1102 | and the rest are pushed. */ | |
1103 | #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ | |
6c535c69 | 1104 | (PASS_IN_REG_P ((CUM), (MODE), (TYPE)) \ |
56e2e762 NC |
1105 | ? gen_rtx_REG ((MODE), ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE))) \ |
1106 | : 0) | |
8c5ca3b9 DE |
1107 | |
1108 | /* A C expression for the number of words, at the beginning of an | |
1109 | argument, must be put in registers. The value must be zero for | |
1110 | arguments that are passed entirely in registers or that are entirely | |
1111 | pushed on the stack. | |
1112 | ||
1113 | On some machines, certain arguments must be passed partially in | |
1114 | registers and partially in memory. On these machines, typically the | |
1115 | first @var{n} words of arguments are passed in registers, and the rest | |
1116 | on the stack. If a multi-word argument (a @code{double} or a | |
1117 | structure) crosses that boundary, its first few words must be passed | |
1118 | in registers and the rest must be pushed. This macro tells the | |
1119 | compiler when this occurs, and how many of the words should go in | |
1120 | registers. */ | |
1121 | #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ | |
2b7972b0 | 1122 | function_arg_partial_nregs (&CUM, (int)MODE, TYPE, NAMED) |
8c5ca3b9 DE |
1123 | |
1124 | /* A C expression that indicates when an argument must be passed by | |
1125 | reference. If nonzero for an argument, a copy of that argument is | |
1126 | made in memory and a pointer to the argument is passed instead of | |
1127 | the argument itself. The pointer is passed in whatever way is | |
1128 | appropriate for passing a pointer to that type. */ | |
1129 | /* All arguments greater than 8 bytes are passed this way. */ | |
1130 | #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \ | |
d88e80e6 | 1131 | ((TYPE) && m32r_pass_by_reference (TYPE)) |
8c5ca3b9 DE |
1132 | |
1133 | /* Update the data in CUM to advance over an argument | |
1134 | of mode MODE and data type TYPE. | |
1135 | (TYPE is null for libcalls where that information may not be available.) */ | |
1136 | #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ | |
56e2e762 | 1137 | ((CUM) = (ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) \ |
8c5ca3b9 DE |
1138 | + ROUND_ADVANCE_ARG ((MODE), (TYPE)))) |
1139 | ||
1140 | /* If defined, a C expression that gives the alignment boundary, in bits, | |
1141 | of an argument with the specified mode and type. If it is not defined, | |
1142 | PARM_BOUNDARY is used for all arguments. */ | |
1143 | #if 0 | |
1144 | /* We assume PARM_BOUNDARY == UNITS_PER_WORD here. */ | |
1145 | #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ | |
ad126521 KI |
1146 | (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) <= PARM_BOUNDARY \ |
1147 | ? PARM_BOUNDARY : 2 * PARM_BOUNDARY) | |
8c5ca3b9 DE |
1148 | #endif |
1149 | ||
8c5ca3b9 DE |
1150 | /* This macro offers an alternative |
1151 | to using `__builtin_saveregs' and defining the macro | |
1152 | `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register | |
1153 | arguments into the stack so that all the arguments appear to have | |
1154 | been passed consecutively on the stack. Once this is done, you | |
1155 | can use the standard implementation of varargs that works for | |
1156 | machines that pass all their arguments on the stack. | |
1157 | ||
1158 | The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure, | |
1159 | containing the values that obtain after processing of the named | |
1160 | arguments. The arguments MODE and TYPE describe the last named | |
1161 | argument--its machine mode and its data type as a tree node. | |
1162 | ||
1163 | The macro implementation should do two things: first, push onto the | |
1164 | stack all the argument registers *not* used for the named | |
1165 | arguments, and second, store the size of the data thus pushed into | |
1166 | the `int'-valued variable whose name is supplied as the argument | |
1167 | PRETEND_SIZE. The value that you store here will serve as | |
1168 | additional offset for setting up the stack frame. | |
1169 | ||
1170 | If the argument NO_RTL is nonzero, it means that the | |
1171 | arguments of the function are being analyzed for the second time. | |
1172 | This happens for an inline function, which is not actually | |
1173 | compiled until the end of the source file. The macro | |
1174 | `SETUP_INCOMING_VARARGS' should not generate any instructions in | |
1175 | this case. */ | |
1176 | ||
1177 | #define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_SIZE, NO_RTL) \ | |
ad126521 | 1178 | m32r_setup_incoming_varargs (& ARGS_SO_FAR, MODE, TYPE, & PRETEND_SIZE, NO_RTL) |
40cae311 RH |
1179 | |
1180 | /* Implement `va_arg'. */ | |
1181 | #define EXPAND_BUILTIN_VA_ARG(valist, type) \ | |
1182 | m32r_va_arg (valist, type) | |
8c5ca3b9 DE |
1183 | \f |
1184 | /* Function results. */ | |
1185 | ||
1186 | /* Define how to find the value returned by a function. | |
1187 | VALTYPE is the data type of the value (as a tree). | |
1188 | If the precise function being called is known, FUNC is its FUNCTION_DECL; | |
1189 | otherwise, FUNC is 0. */ | |
c5c76735 | 1190 | #define FUNCTION_VALUE(VALTYPE, FUNC) gen_rtx_REG (TYPE_MODE (VALTYPE), 0) |
8c5ca3b9 DE |
1191 | |
1192 | /* Define how to find the value returned by a library function | |
1193 | assuming the value has mode MODE. */ | |
c5c76735 | 1194 | #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 0) |
8c5ca3b9 DE |
1195 | |
1196 | /* 1 if N is a possible register number for a function value | |
1197 | as seen by the caller. */ | |
1198 | /* ??? What about r1 in DI/DF values. */ | |
1199 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) | |
1200 | ||
1201 | /* A C expression which can inhibit the returning of certain function | |
1202 | values in registers, based on the type of value. A nonzero value says | |
1203 | to return the function value in memory, just as large structures are | |
1204 | always returned. Here TYPE will be a C expression of type `tree', | |
1205 | representing the data type of the value. */ | |
d88e80e6 | 1206 | #define RETURN_IN_MEMORY(TYPE) m32r_pass_by_reference (TYPE) |
8c5ca3b9 DE |
1207 | |
1208 | /* Tell GCC to use RETURN_IN_MEMORY. */ | |
1209 | #define DEFAULT_PCC_STRUCT_RETURN 0 | |
1210 | ||
1211 | /* Register in which address to store a structure value | |
1212 | is passed to a function, or 0 to use `invisible' first argument. */ | |
1213 | #define STRUCT_VALUE 0 | |
1214 | \f | |
1215 | /* Function entry and exit. */ | |
1216 | ||
1217 | /* Initialize data used by insn expanders. This is called from | |
1218 | init_emit, once for each function, before code is generated. */ | |
1219 | #define INIT_EXPANDERS m32r_init_expanders () | |
1220 | ||
8c5ca3b9 DE |
1221 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
1222 | the stack pointer does not matter. The value is tested only in | |
1223 | functions that have frame pointers. | |
1224 | No definition is equivalent to always zero. */ | |
1225 | #define EXIT_IGNORE_STACK 1 | |
1226 | ||
8c5ca3b9 DE |
1227 | /* Output assembler code to FILE to increment profiler label # LABELNO |
1228 | for profiling a function entry. */ | |
ad126521 KI |
1229 | #undef FUNCTION_PROFILER |
1230 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
1231 | do \ | |
1232 | { \ | |
1233 | if (flag_pic) \ | |
1234 | { \ | |
1235 | fprintf (FILE, "\tld24 r14,#mcount\n"); \ | |
1236 | fprintf (FILE, "\tadd r14,r12\n"); \ | |
1237 | fprintf (FILE, "\tld r14,@r14\n"); \ | |
1238 | fprintf (FILE, "\tjl r14\n"); \ | |
1239 | } \ | |
1240 | else \ | |
1241 | { \ | |
1242 | if (TARGET_ADDR24) \ | |
1243 | fprintf (FILE, "\tbl mcount\n"); \ | |
1244 | else \ | |
1245 | { \ | |
1246 | fprintf (FILE, "\tseth r14,#high(mcount)\n"); \ | |
1247 | fprintf (FILE, "\tor3 r14,r14,#low(mcount)\n"); \ | |
1248 | fprintf (FILE, "\tjl r14\n"); \ | |
1249 | } \ | |
1250 | } \ | |
1251 | fprintf (FILE, "\taddi sp,#4\n"); \ | |
1252 | } \ | |
1253 | while (0) | |
8c5ca3b9 DE |
1254 | \f |
1255 | /* Trampolines. */ | |
1256 | ||
ad126521 | 1257 | /* On the M32R, the trampoline is: |
8c5ca3b9 | 1258 | |
ad126521 KI |
1259 | mv r7, lr -> bl L1 ; 178e 7e01 |
1260 | L1: add3 r6, lr, #L2-L1 ; 86ae 000c (L2 - L1 = 12) | |
1261 | mv lr, r7 -> ld r7,@r6+ ; 1e87 27e6 | |
1262 | ld r6, @r6 -> jmp r6 ; 26c6 1fc6 | |
1263 | L2: .word STATIC | |
1264 | .word FUNCTION */ | |
8c5ca3b9 | 1265 | |
ad126521 KI |
1266 | #ifndef CACHE_FLUSH_FUNC |
1267 | #define CACHE_FLUSH_FUNC "_flush_cache" | |
1268 | #endif | |
1269 | #ifndef CACHE_FLUSH_TRAP | |
1270 | #define CACHE_FLUSH_TRAP "12" | |
1271 | #endif | |
8c5ca3b9 DE |
1272 | |
1273 | /* Length in bytes of the trampoline for entering a nested function. */ | |
f26ef713 | 1274 | #define TRAMPOLINE_SIZE 24 |
8c5ca3b9 DE |
1275 | |
1276 | /* Emit RTL insns to initialize the variable parts of a trampoline. | |
1277 | FNADDR is an RTX for the address of the function's pure code. | |
1278 | CXT is an RTX for the static chain value for the function. */ | |
ad126521 KI |
1279 | #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ |
1280 | do \ | |
1281 | { \ | |
1282 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 0)), \ | |
1283 | GEN_INT \ | |
1284 | (TARGET_LITTLE_ENDIAN ? 0x017e8e17 : 0x178e7e01)); \ | |
1285 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 4)), \ | |
1286 | GEN_INT \ | |
1287 | (TARGET_LITTLE_ENDIAN ? 0x0c00ae86 : 0x86ae000c)); \ | |
1288 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 8)), \ | |
1289 | GEN_INT \ | |
1290 | (TARGET_LITTLE_ENDIAN ? 0xe627871e : 0x1e8727e6)); \ | |
1291 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 12)), \ | |
1292 | GEN_INT \ | |
1293 | (TARGET_LITTLE_ENDIAN ? 0xc616c626 : 0x26c61fc6)); \ | |
1294 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 16)), \ | |
1295 | (CXT)); \ | |
1296 | emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 20)), \ | |
1297 | (FNADDR)); \ | |
1298 | if (m32r_cache_flush_trap_string && m32r_cache_flush_trap_string[0]) \ | |
1299 | emit_insn (gen_flush_icache (validize_mem (gen_rtx_MEM (SImode, TRAMP)),\ | |
1300 | GEN_INT (m32r_cache_flush_trap) )); \ | |
1301 | else if (m32r_cache_flush_func && m32r_cache_flush_func[0]) \ | |
1302 | emit_library_call (gen_rtx_SYMBOL_REF (Pmode, m32r_cache_flush_func), \ | |
1303 | 0, VOIDmode, 3, TRAMP, Pmode, \ | |
1304 | GEN_INT (TRAMPOLINE_SIZE), SImode, \ | |
1305 | GEN_INT (3), SImode); \ | |
1306 | } \ | |
1307 | while (0) | |
8c5ca3b9 DE |
1308 | \f |
1309 | /* Library calls. */ | |
1310 | ||
1311 | /* Generate calls to memcpy, memcmp and memset. */ | |
1312 | #define TARGET_MEM_FUNCTIONS | |
1313 | \f | |
1314 | /* Addressing modes, and classification of registers for them. */ | |
1315 | ||
1316 | /* Maximum number of registers that can appear in a valid memory address. */ | |
1317 | #define MAX_REGS_PER_ADDRESS 1 | |
1318 | ||
1319 | /* We have post-inc load and pre-dec,pre-inc store, | |
1320 | but only for 4 byte vals. */ | |
ad126521 KI |
1321 | #define HAVE_PRE_DECREMENT 1 |
1322 | #define HAVE_PRE_INCREMENT 1 | |
940da324 | 1323 | #define HAVE_POST_INCREMENT 1 |
8c5ca3b9 DE |
1324 | |
1325 | /* Recognize any constant value that is a valid address. */ | |
ad126521 KI |
1326 | #define CONSTANT_ADDRESS_P(X) \ |
1327 | ( GET_CODE (X) == LABEL_REF \ | |
1328 | || GET_CODE (X) == SYMBOL_REF \ | |
1329 | || GET_CODE (X) == CONST_INT \ | |
1330 | || (GET_CODE (X) == CONST \ | |
1331 | && ! (flag_pic && ! m32r_legitimate_pic_operand_p (X)))) | |
8c5ca3b9 DE |
1332 | |
1333 | /* Nonzero if the constant value X is a legitimate general operand. | |
1334 | We don't allow (plus symbol large-constant) as the relocations can't | |
1335 | describe it. INTVAL > 32767 handles both 16 bit and 24 bit relocations. | |
1336 | We allow all CONST_DOUBLE's as the md file patterns will force the | |
1337 | constant to memory if they can't handle them. */ | |
1338 | ||
56e2e762 | 1339 | #define LEGITIMATE_CONSTANT_P(X) \ |
ad126521 KI |
1340 | (! (GET_CODE (X) == CONST \ |
1341 | && GET_CODE (XEXP (X, 0)) == PLUS \ | |
1342 | && GET_CODE (XEXP (XEXP (X, 0), 0)) == SYMBOL_REF \ | |
1343 | && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \ | |
1344 | && (unsigned HOST_WIDE_INT) INTVAL (XEXP (XEXP (X, 0), 1)) > 32767)) | |
8c5ca3b9 DE |
1345 | |
1346 | /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx | |
1347 | and check its validity for a certain class. | |
1348 | We have two alternate definitions for each of them. | |
1349 | The usual definition accepts all pseudo regs; the other rejects | |
1350 | them unless they have been allocated suitable hard regs. | |
1351 | The symbol REG_OK_STRICT causes the latter definition to be used. | |
1352 | ||
1353 | Most source files want to accept pseudo regs in the hope that | |
1354 | they will get allocated to the class that the insn wants them to be in. | |
1355 | Source files for reload pass need to be strict. | |
1356 | After reload, it makes no difference, since pseudo regs have | |
1357 | been eliminated by then. */ | |
1358 | ||
1359 | #ifdef REG_OK_STRICT | |
1360 | ||
1361 | /* Nonzero if X is a hard reg that can be used as a base reg. */ | |
1362 | #define REG_OK_FOR_BASE_P(X) GPR_P (REGNO (X)) | |
1363 | /* Nonzero if X is a hard reg that can be used as an index. */ | |
1364 | #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) | |
1365 | ||
1366 | #else | |
1367 | ||
1368 | /* Nonzero if X is a hard reg that can be used as a base reg | |
1369 | or if it is a pseudo reg. */ | |
56e2e762 | 1370 | #define REG_OK_FOR_BASE_P(X) \ |
ad126521 KI |
1371 | (GPR_P (REGNO (X)) \ |
1372 | || (REGNO (X)) == ARG_POINTER_REGNUM \ | |
1373 | || REGNO (X) >= FIRST_PSEUDO_REGISTER) | |
8c5ca3b9 DE |
1374 | /* Nonzero if X is a hard reg that can be used as an index |
1375 | or if it is a pseudo reg. */ | |
1376 | #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) | |
1377 | ||
1378 | #endif | |
1379 | ||
1380 | /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression | |
1381 | that is a valid memory address for an instruction. | |
1382 | The MODE argument is the machine mode for the MEM expression | |
1383 | that wants to use this address. */ | |
1384 | ||
56e2e762 NC |
1385 | /* Local to this file. */ |
1386 | #define RTX_OK_FOR_BASE_P(X) (REG_P (X) && REG_OK_FOR_BASE_P (X)) | |
8c5ca3b9 | 1387 | |
56e2e762 | 1388 | /* Local to this file. */ |
8c5ca3b9 | 1389 | #define RTX_OK_FOR_OFFSET_P(X) \ |
ad126521 | 1390 | (GET_CODE (X) == CONST_INT && INT16_P (INTVAL (X))) |
8c5ca3b9 | 1391 | |
56e2e762 | 1392 | /* Local to this file. */ |
ad126521 KI |
1393 | #define LEGITIMATE_OFFSET_ADDRESS_P(MODE, X) \ |
1394 | (GET_CODE (X) == PLUS \ | |
1395 | && RTX_OK_FOR_BASE_P (XEXP (X, 0)) \ | |
1396 | && RTX_OK_FOR_OFFSET_P (XEXP (X, 1))) | |
8c5ca3b9 | 1397 | |
56e2e762 | 1398 | /* Local to this file. */ |
5b8ae21f MM |
1399 | /* For LO_SUM addresses, do not allow them if the MODE is > 1 word, |
1400 | since more than one instruction will be required. */ | |
ad126521 KI |
1401 | #define LEGITIMATE_LO_SUM_ADDRESS_P(MODE, X) \ |
1402 | (GET_CODE (X) == LO_SUM \ | |
1403 | && (MODE != BLKmode && GET_MODE_SIZE (MODE) <= UNITS_PER_WORD)\ | |
1404 | && RTX_OK_FOR_BASE_P (XEXP (X, 0)) \ | |
1405 | && CONSTANT_P (XEXP (X, 1))) | |
8c5ca3b9 | 1406 | |
56e2e762 NC |
1407 | /* Local to this file. */ |
1408 | /* Is this a load and increment operation. */ | |
ad126521 KI |
1409 | #define LOAD_POSTINC_P(MODE, X) \ |
1410 | (((MODE) == SImode || (MODE) == SFmode) \ | |
1411 | && GET_CODE (X) == POST_INC \ | |
1412 | && GET_CODE (XEXP (X, 0)) == REG \ | |
1413 | && RTX_OK_FOR_BASE_P (XEXP (X, 0))) | |
56e2e762 NC |
1414 | |
1415 | /* Local to this file. */ | |
e03f5d43 | 1416 | /* Is this an increment/decrement and store operation. */ |
ad126521 KI |
1417 | #define STORE_PREINC_PREDEC_P(MODE, X) \ |
1418 | (((MODE) == SImode || (MODE) == SFmode) \ | |
1419 | && (GET_CODE (X) == PRE_INC || GET_CODE (X) == PRE_DEC) \ | |
1420 | && GET_CODE (XEXP (X, 0)) == REG \ | |
1421 | && RTX_OK_FOR_BASE_P (XEXP (X, 0))) | |
1422 | ||
1423 | #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ | |
1424 | do \ | |
1425 | { \ | |
1426 | if (RTX_OK_FOR_BASE_P (X)) \ | |
1427 | goto ADDR; \ | |
1428 | if (LEGITIMATE_OFFSET_ADDRESS_P ((MODE), (X))) \ | |
1429 | goto ADDR; \ | |
1430 | if (LEGITIMATE_LO_SUM_ADDRESS_P ((MODE), (X))) \ | |
1431 | goto ADDR; \ | |
1432 | if (LOAD_POSTINC_P ((MODE), (X))) \ | |
1433 | goto ADDR; \ | |
1434 | if (STORE_PREINC_PREDEC_P ((MODE), (X))) \ | |
1435 | goto ADDR; \ | |
1436 | } \ | |
1437 | while (0) | |
8c5ca3b9 DE |
1438 | |
1439 | /* Try machine-dependent ways of modifying an illegitimate address | |
1440 | to be legitimate. If we find one, return the new, valid address. | |
1441 | This macro is used in only one place: `memory_address' in explow.c. | |
1442 | ||
1443 | OLDX is the address as it was before break_out_memory_refs was called. | |
1444 | In some cases it is useful to look at this to decide what needs to be done. | |
1445 | ||
1446 | MODE and WIN are passed so that this macro can use | |
1447 | GO_IF_LEGITIMATE_ADDRESS. | |
1448 | ||
1449 | It is always safe for this macro to do nothing. It exists to recognize | |
ad126521 KI |
1450 | opportunities to optimize the output. */ |
1451 | ||
1452 | #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \ | |
1453 | do \ | |
1454 | { \ | |
1455 | if (flag_pic) \ | |
1456 | (X) = m32r_legitimize_pic_address (X, NULL_RTX); \ | |
1457 | if (memory_address_p (MODE, X)) \ | |
1458 | goto WIN; \ | |
1459 | } \ | |
1460 | while (0) | |
8c5ca3b9 DE |
1461 | |
1462 | /* Go to LABEL if ADDR (a legitimate address expression) | |
1463 | has an effect that depends on the machine mode it is used for. */ | |
ad126521 KI |
1464 | #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \ |
1465 | do \ | |
1466 | { \ | |
1467 | if ( GET_CODE (ADDR) == PRE_DEC \ | |
1468 | || GET_CODE (ADDR) == PRE_INC \ | |
1469 | || GET_CODE (ADDR) == POST_INC \ | |
1470 | || GET_CODE (ADDR) == LO_SUM) \ | |
1471 | goto LABEL; \ | |
1472 | } \ | |
1473 | while (0) | |
8c5ca3b9 DE |
1474 | \f |
1475 | /* Condition code usage. */ | |
1476 | ||
a0ab749a | 1477 | /* Return nonzero if SELECT_CC_MODE will never return MODE for a |
8c5ca3b9 | 1478 | floating point inequality comparison. */ |
18543a22 | 1479 | #define REVERSIBLE_CC_MODE(MODE) 1 /*???*/ |
8c5ca3b9 DE |
1480 | \f |
1481 | /* Costs. */ | |
1482 | ||
8c5ca3b9 DE |
1483 | /* Compute extra cost of moving data between one register class |
1484 | and another. */ | |
cf011243 | 1485 | #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) 2 |
8c5ca3b9 DE |
1486 | |
1487 | /* Compute the cost of moving data between registers and memory. */ | |
1488 | /* Memory is 3 times as expensive as registers. | |
1489 | ??? Is that the right way to look at it? */ | |
5b8ae21f | 1490 | #define MEMORY_MOVE_COST(MODE,CLASS,IN_P) \ |
8c5ca3b9 DE |
1491 | (GET_MODE_SIZE (MODE) <= UNITS_PER_WORD ? 6 : 12) |
1492 | ||
1493 | /* The cost of a branch insn. */ | |
1494 | /* A value of 2 here causes GCC to avoid using branches in comparisons like | |
1495 | while (a < N && a). Branches aren't that expensive on the M32R so | |
1496 | we define this as 1. Defining it as 2 had a heavy hit in fp-bit.c. */ | |
56e2e762 | 1497 | #define BRANCH_COST ((TARGET_BRANCH_COST) ? 2 : 1) |
8c5ca3b9 | 1498 | |
8c5ca3b9 DE |
1499 | /* Nonzero if access to memory by bytes is slow and undesirable. |
1500 | For RISC chips, it means that access to memory by bytes is no | |
1501 | better than access by words when possible, so grab a whole word | |
1502 | and maybe make use of that. */ | |
1503 | #define SLOW_BYTE_ACCESS 1 | |
1504 | ||
1505 | /* Define this macro if it is as good or better to call a constant | |
1506 | function address than to call an address kept in a register. */ | |
8c5ca3b9 DE |
1507 | #define NO_FUNCTION_CSE |
1508 | ||
1509 | /* Define this macro if it is as good or better for a function to call | |
1510 | itself with an explicit address than to call an address kept in a | |
1511 | register. */ | |
8c5ca3b9 | 1512 | #define NO_RECURSIVE_FUNCTION_CSE |
8c5ca3b9 DE |
1513 | \f |
1514 | /* Section selection. */ | |
1515 | ||
1516 | #define TEXT_SECTION_ASM_OP "\t.section .text" | |
1517 | #define DATA_SECTION_ASM_OP "\t.section .data" | |
8c5ca3b9 | 1518 | #define BSS_SECTION_ASM_OP "\t.section .bss" |
8c5ca3b9 | 1519 | |
8c5ca3b9 DE |
1520 | /* Define this macro if jump tables (for tablejump insns) should be |
1521 | output in the text section, along with the assembler instructions. | |
1522 | Otherwise, the readonly data section is used. | |
1523 | This macro is irrelevant if there is no separate readonly data section. */ | |
ad126521 | 1524 | #define JUMP_TABLES_IN_TEXT_SECTION (flag_pic) |
8c5ca3b9 | 1525 | \f |
ad126521 | 1526 | /* Position Independent Code. */ |
8c5ca3b9 DE |
1527 | |
1528 | /* The register number of the register used to address a table of static | |
1529 | data addresses in memory. In some cases this register is defined by a | |
1530 | processor's ``application binary interface'' (ABI). When this macro | |
1531 | is defined, RTL is generated for this register once, as with the stack | |
1532 | pointer and frame pointer registers. If this macro is not defined, it | |
1533 | is up to the machine-dependent files to allocate such a register (if | |
1534 | necessary). */ | |
ad126521 | 1535 | #define PIC_OFFSET_TABLE_REGNUM 12 |
8c5ca3b9 DE |
1536 | |
1537 | /* Define this macro if the register defined by PIC_OFFSET_TABLE_REGNUM is | |
1538 | clobbered by calls. Do not define this macro if PIC_OFFSET_TABLE_REGNUM | |
1539 | is not defined. */ | |
1540 | /* This register is call-saved on the M32R. */ | |
1541 | /*#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED*/ | |
1542 | ||
1543 | /* By generating position-independent code, when two different programs (A | |
1544 | and B) share a common library (libC.a), the text of the library can be | |
1545 | shared whether or not the library is linked at the same address for both | |
1546 | programs. In some of these environments, position-independent code | |
1547 | requires not only the use of different addressing modes, but also | |
1548 | special code to enable the use of these addressing modes. | |
1549 | ||
1550 | The FINALIZE_PIC macro serves as a hook to emit these special | |
1551 | codes once the function is being compiled into assembly code, but not | |
1552 | before. (It is not done before, because in the case of compiling an | |
1553 | inline function, it would lead to multiple PIC prologues being | |
1554 | included in functions which used inline functions and were compiled to | |
1555 | assembly language.) */ | |
1556 | ||
ad126521 | 1557 | #define FINALIZE_PIC m32r_finalize_pic () |
8c5ca3b9 DE |
1558 | |
1559 | /* A C expression that is nonzero if X is a legitimate immediate | |
1560 | operand on the target machine when generating position independent code. | |
1561 | You can assume that X satisfies CONSTANT_P, so you need not | |
1562 | check this. You can also assume `flag_pic' is true, so you need not | |
1563 | check it either. You need not define this macro if all constants | |
1564 | (including SYMBOL_REF) can be immediate operands when generating | |
1565 | position independent code. */ | |
ad126521 | 1566 | #define LEGITIMATE_PIC_OPERAND_P(X) m32r_legitimate_pic_operand_p (X) |
8c5ca3b9 DE |
1567 | \f |
1568 | /* Control the assembler format that we output. */ | |
1569 | ||
8c5ca3b9 DE |
1570 | /* A C string constant describing how to begin a comment in the target |
1571 | assembler language. The compiler assumes that the comment will | |
1572 | end at the end of the line. */ | |
1573 | #define ASM_COMMENT_START ";" | |
1574 | ||
1575 | /* Output to assembler file text saying following lines | |
1576 | may contain character constants, extra white space, comments, etc. */ | |
1577 | #define ASM_APP_ON "" | |
1578 | ||
1579 | /* Output to assembler file text saying following lines | |
1580 | no longer contain unusual constructs. */ | |
1581 | #define ASM_APP_OFF "" | |
1582 | ||
506a61b1 KG |
1583 | /* Globalizing directive for a label. */ |
1584 | #define GLOBAL_ASM_OP "\t.global\t" | |
8c5ca3b9 | 1585 | |
5f97de0a DE |
1586 | /* If -Os, don't force line number labels to begin at the beginning of |
1587 | the word; we still want the assembler to try to put things in parallel, | |
1588 | should that be possible. | |
1589 | For m32r/d, instructions are never in parallel (other than with a nop) | |
1590 | and the simulator and stub both handle a breakpoint in the middle of | |
1591 | a word so don't ever force line number labels to begin at the beginning | |
1592 | of a word. */ | |
5b8ae21f MM |
1593 | |
1594 | #undef ASM_OUTPUT_SOURCE_LINE | |
a8d0467e | 1595 | #define ASM_OUTPUT_SOURCE_LINE(file, line, counter) \ |
56e2e762 NC |
1596 | do \ |
1597 | { \ | |
56e2e762 | 1598 | fprintf (file, ".stabn 68,0,%d,.LM%d-", \ |
a8d0467e | 1599 | line, counter); \ |
56e2e762 NC |
1600 | assemble_name \ |
1601 | (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ | |
1602 | fprintf (file, (optimize_size || TARGET_M32R) \ | |
1603 | ? "\n\t.debugsym .LM%d\n" \ | |
1604 | : "\n.LM%d:\n", \ | |
a8d0467e | 1605 | counter); \ |
56e2e762 NC |
1606 | } \ |
1607 | while (0) | |
5b8ae21f | 1608 | |
8c5ca3b9 DE |
1609 | /* How to refer to registers in assembler output. |
1610 | This sequence is indexed by compiler's hard-register-number (see above). */ | |
56e2e762 NC |
1611 | #ifndef SUBTARGET_REGISTER_NAMES |
1612 | #define SUBTARGET_REGISTER_NAMES | |
1613 | #endif | |
1614 | ||
1615 | #define REGISTER_NAMES \ | |
8c5ca3b9 DE |
1616 | { \ |
1617 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
1618 | "r8", "r9", "r10", "r11", "r12", "fp", "lr", "sp", \ | |
56e2e762 NC |
1619 | "ap", "cbit", "a0" \ |
1620 | SUBTARGET_REGISTER_NAMES \ | |
8c5ca3b9 DE |
1621 | } |
1622 | ||
1623 | /* If defined, a C initializer for an array of structures containing | |
1624 | a name and a register number. This macro defines additional names | |
1625 | for hard registers, thus allowing the `asm' option in declarations | |
1626 | to refer to registers using alternate names. */ | |
56e2e762 NC |
1627 | #ifndef SUBTARGET_ADDITIONAL_REGISTER_NAMES |
1628 | #define SUBTARGET_ADDITIONAL_REGISTER_NAMES | |
1629 | #endif | |
1630 | ||
1631 | #define ADDITIONAL_REGISTER_NAMES \ | |
8c5ca3b9 DE |
1632 | { \ |
1633 | /*{ "gp", GP_REGNUM },*/ \ | |
1634 | { "r13", FRAME_POINTER_REGNUM }, \ | |
1635 | { "r14", RETURN_ADDR_REGNUM }, \ | |
1636 | { "r15", STACK_POINTER_REGNUM }, \ | |
56e2e762 | 1637 | SUBTARGET_ADDITIONAL_REGISTER_NAMES \ |
8c5ca3b9 DE |
1638 | } |
1639 | ||
1640 | /* A C expression which evaluates to true if CODE is a valid | |
1641 | punctuation character for use in the `PRINT_OPERAND' macro. */ | |
f540a7d3 | 1642 | extern char m32r_punct_chars[256]; |
8c5ca3b9 | 1643 | #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \ |
56e2e762 | 1644 | m32r_punct_chars[(unsigned char) (CHAR)] |
8c5ca3b9 DE |
1645 | |
1646 | /* Print operand X (an rtx) in assembler syntax to file FILE. | |
1647 | CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. | |
1648 | For `%' followed by punctuation, CODE is the punctuation and X is null. */ | |
1649 | #define PRINT_OPERAND(FILE, X, CODE) \ | |
56e2e762 | 1650 | m32r_print_operand (FILE, X, CODE) |
8c5ca3b9 DE |
1651 | |
1652 | /* A C compound statement to output to stdio stream STREAM the | |
1653 | assembler syntax for an instruction operand that is a memory | |
fb49053f | 1654 | reference whose address is ADDR. ADDR is an RTL expression. */ |
8c5ca3b9 | 1655 | #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ |
56e2e762 | 1656 | m32r_print_operand_address (FILE, ADDR) |
8c5ca3b9 DE |
1657 | |
1658 | /* If defined, C string expressions to be used for the `%R', `%L', | |
1659 | `%U', and `%I' options of `asm_fprintf' (see `final.c'). These | |
1660 | are useful when a single `md' file must support multiple assembler | |
1661 | formats. In that case, the various `tm.h' files can define these | |
1662 | macros differently. */ | |
ad126521 KI |
1663 | #define REGISTER_PREFIX "" |
1664 | #define LOCAL_LABEL_PREFIX ".L" | |
1665 | #define USER_LABEL_PREFIX "" | |
1666 | #define IMMEDIATE_PREFIX "#" | |
8c5ca3b9 DE |
1667 | |
1668 | /* This is how to output an element of a case-vector that is absolute. */ | |
56e2e762 NC |
1669 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ |
1670 | do \ | |
1671 | { \ | |
1672 | char label[30]; \ | |
1673 | ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ | |
1674 | fprintf (FILE, "\t.word\t"); \ | |
1675 | assemble_name (FILE, label); \ | |
1676 | fprintf (FILE, "\n"); \ | |
1677 | } \ | |
1678 | while (0) | |
8c5ca3b9 DE |
1679 | |
1680 | /* This is how to output an element of a case-vector that is relative. */ | |
56e2e762 NC |
1681 | #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL)\ |
1682 | do \ | |
1683 | { \ | |
1684 | char label[30]; \ | |
1685 | ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ | |
1686 | fprintf (FILE, "\t.word\t"); \ | |
1687 | assemble_name (FILE, label); \ | |
1688 | fprintf (FILE, "-"); \ | |
1689 | ASM_GENERATE_INTERNAL_LABEL (label, "L", REL); \ | |
1690 | assemble_name (FILE, label); \ | |
ad126521 | 1691 | fprintf (FILE, "\n"); \ |
56e2e762 NC |
1692 | } \ |
1693 | while (0) | |
8c5ca3b9 | 1694 | |
fc470718 R |
1695 | /* The desired alignment for the location counter at the beginning |
1696 | of a loop. */ | |
8c5ca3b9 DE |
1697 | /* On the M32R, align loops to 32 byte boundaries (cache line size) |
1698 | if -malign-loops. */ | |
fc470718 | 1699 | #define LOOP_ALIGN(LABEL) (TARGET_ALIGN_LOOPS ? 5 : 0) |
8c5ca3b9 | 1700 | |
56e2e762 NC |
1701 | /* Define this to be the maximum number of insns to move around when moving |
1702 | a loop test from the top of a loop to the bottom | |
1703 | and seeing whether to duplicate it. The default is thirty. | |
1704 | ||
1705 | Loop unrolling currently doesn't like this optimization, so | |
1706 | disable doing if we are unrolling loops and saving space. */ | |
1707 | #define LOOP_TEST_THRESHOLD (optimize_size \ | |
1708 | && !flag_unroll_loops \ | |
1709 | && !flag_unroll_all_loops ? 2 : 30) | |
1710 | ||
8c5ca3b9 DE |
1711 | /* This is how to output an assembler line |
1712 | that says to advance the location counter | |
1713 | to a multiple of 2**LOG bytes. */ | |
1714 | /* .balign is used to avoid confusion. */ | |
56e2e762 NC |
1715 | #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
1716 | do \ | |
1717 | { \ | |
1718 | if ((LOG) != 0) \ | |
1719 | fprintf (FILE, "\t.balign %d\n", 1 << (LOG)); \ | |
1720 | } \ | |
1721 | while (0) | |
8c5ca3b9 DE |
1722 | |
1723 | /* Like `ASM_OUTPUT_COMMON' except takes the required alignment as a | |
1724 | separate, explicit argument. If you define this macro, it is used in | |
1725 | place of `ASM_OUTPUT_COMMON', and gives you more flexibility in | |
1726 | handling the required alignment of the variable. The alignment is | |
1727 | specified as the number of bits. */ | |
1728 | ||
6e7b07a7 | 1729 | #define SCOMMON_ASM_OP "\t.scomm\t" |
8c5ca3b9 | 1730 | |
56e2e762 NC |
1731 | #undef ASM_OUTPUT_ALIGNED_COMMON |
1732 | #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ | |
1733 | do \ | |
8c5ca3b9 | 1734 | { \ |
56e2e762 NC |
1735 | if (! TARGET_SDATA_NONE \ |
1736 | && (SIZE) > 0 && (SIZE) <= g_switch_value) \ | |
016c8440 | 1737 | fprintf ((FILE), "%s", SCOMMON_ASM_OP); \ |
56e2e762 | 1738 | else \ |
016c8440 | 1739 | fprintf ((FILE), "%s", COMMON_ASM_OP); \ |
8c5ca3b9 | 1740 | assemble_name ((FILE), (NAME)); \ |
58e15542 | 1741 | fprintf ((FILE), ",%u,%u\n", (int)(SIZE), (ALIGN) / BITS_PER_UNIT);\ |
8c5ca3b9 | 1742 | } \ |
56e2e762 | 1743 | while (0) |
8c5ca3b9 | 1744 | |
cb1f9d03 KI |
1745 | #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ |
1746 | do \ | |
1747 | { \ | |
1748 | if (! TARGET_SDATA_NONE \ | |
1749 | && (SIZE) > 0 && (SIZE) <= g_switch_value) \ | |
1750 | named_section (0, ".sbss", 0); \ | |
1751 | else \ | |
1752 | bss_section (); \ | |
1753 | ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \ | |
1754 | last_assemble_variable_decl = DECL; \ | |
1755 | ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \ | |
1756 | ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \ | |
1757 | } \ | |
56e2e762 | 1758 | while (0) |
8c5ca3b9 DE |
1759 | \f |
1760 | /* Debugging information. */ | |
1761 | ||
1762 | /* Generate DBX and DWARF debugging information. */ | |
ad126521 | 1763 | #define DBX_DEBUGGING_INFO 1 |
23532de9 | 1764 | #define DWARF2_DEBUGGING_INFO 1 |
8c5ca3b9 DE |
1765 | |
1766 | /* Prefer STABS (for now). */ | |
56e2e762 | 1767 | #undef PREFERRED_DEBUGGING_TYPE |
8c5ca3b9 DE |
1768 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
1769 | ||
8c5ca3b9 DE |
1770 | /* Turn off splitting of long stabs. */ |
1771 | #define DBX_CONTIN_LENGTH 0 | |
1772 | \f | |
1773 | /* Miscellaneous. */ | |
1774 | ||
1775 | /* Specify the machine mode that this machine uses | |
1776 | for the index in the tablejump instruction. */ | |
ad126521 | 1777 | #define CASE_VECTOR_MODE (flag_pic ? SImode : Pmode) |
8c5ca3b9 | 1778 | |
18543a22 ILT |
1779 | /* Define as C expression which evaluates to nonzero if the tablejump |
1780 | instruction expects the table to contain offsets from the address of the | |
1781 | table. | |
1782 | Do not define this if the table should contain absolute addresses. */ | |
8c5ca3b9 DE |
1783 | /* It's not clear what PIC will look like or whether we want to use -fpic |
1784 | for the embedded form currently being talked about. For now require -fpic | |
1785 | to get pc relative switch tables. */ | |
18543a22 | 1786 | /*#define CASE_VECTOR_PC_RELATIVE 1 */ |
8c5ca3b9 DE |
1787 | |
1788 | /* Define if operations between registers always perform the operation | |
1789 | on the full register even if a narrower mode is specified. */ | |
1790 | #define WORD_REGISTER_OPERATIONS | |
1791 | ||
1792 | /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD | |
1793 | will either zero-extend or sign-extend. The value of this macro should | |
1794 | be the code that says which one of the two operations is implicitly | |
1795 | done, NIL if none. */ | |
1796 | #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND | |
1797 | ||
ad126521 KI |
1798 | /* Max number of bytes we can move from memory |
1799 | to memory in one reasonably fast instruction. */ | |
8c5ca3b9 DE |
1800 | #define MOVE_MAX 4 |
1801 | ||
1802 | /* Define this to be nonzero if shift instructions ignore all but the low-order | |
1803 | few bits. */ | |
1804 | #define SHIFT_COUNT_TRUNCATED 1 | |
1805 | ||
1806 | /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits | |
1807 | is done just by pretending it is already truncated. */ | |
1808 | #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 | |
1809 | ||
8c5ca3b9 DE |
1810 | /* Specify the machine mode that pointers have. |
1811 | After generation of rtl, the compiler makes no further distinction | |
1812 | between pointers and any other objects of this machine mode. */ | |
1813 | /* ??? The M32R doesn't have full 32 bit pointers, but making this PSImode has | |
56e2e762 | 1814 | it's own problems (you have to add extendpsisi2 and truncsipsi2). |
8c5ca3b9 DE |
1815 | Try to avoid it. */ |
1816 | #define Pmode SImode | |
1817 | ||
1818 | /* A function address in a call instruction. */ | |
1819 | #define FUNCTION_MODE SImode | |
8c5ca3b9 DE |
1820 | \f |
1821 | /* Define the information needed to generate branch and scc insns. This is | |
1822 | stored from the compare operation. Note that we can't use "rtx" here | |
1823 | since it hasn't been defined! */ | |
2b7972b0 MM |
1824 | extern struct rtx_def * m32r_compare_op0; |
1825 | extern struct rtx_def * m32r_compare_op1; | |
8c5ca3b9 DE |
1826 | |
1827 | /* M32R function types. */ | |
2b7972b0 MM |
1828 | enum m32r_function_type |
1829 | { | |
8c5ca3b9 DE |
1830 | M32R_FUNCTION_UNKNOWN, M32R_FUNCTION_NORMAL, M32R_FUNCTION_INTERRUPT |
1831 | }; | |
56e2e762 NC |
1832 | |
1833 | #define M32R_INTERRUPT_P(TYPE) ((TYPE) == M32R_FUNCTION_INTERRUPT) | |
2b7972b0 MM |
1834 | |
1835 | /* Define this if you have defined special-purpose predicates in the | |
1836 | file `MACHINE.c'. This macro is called within an initializer of an | |
1837 | array of structures. The first field in the structure is the name | |
1838 | of a predicate and the second field is an array of rtl codes. For | |
1839 | each predicate, list all rtl codes that can be in expressions | |
1840 | matched by the predicate. The list should have a trailing comma. */ | |
1841 | ||
1842 | #define PREDICATE_CODES \ | |
de41e41c | 1843 | { "reg_or_zero_operand", { REG, SUBREG, CONST_INT }}, \ |
2b7972b0 MM |
1844 | { "conditional_move_operand", { REG, SUBREG, CONST_INT }}, \ |
1845 | { "carry_compare_operand", { EQ, NE }}, \ | |
1846 | { "eqne_comparison_operator", { EQ, NE }}, \ | |
1847 | { "signed_comparison_operator", { EQ, NE, LT, LE, GT, GE }}, \ | |
1848 | { "move_dest_operand", { REG, SUBREG, MEM }}, \ | |
1849 | { "move_src_operand", { REG, SUBREG, MEM, CONST_INT, \ | |
1850 | CONST_DOUBLE, LABEL_REF, CONST, \ | |
1851 | SYMBOL_REF }}, \ | |
1852 | { "move_double_src_operand", { REG, SUBREG, MEM, CONST_INT, \ | |
1853 | CONST_DOUBLE }}, \ | |
1854 | { "two_insn_const_operand", { CONST_INT }}, \ | |
1855 | { "symbolic_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \ | |
56e2e762 NC |
1856 | { "seth_add3_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \ |
1857 | { "int8_operand", { CONST_INT }}, \ | |
1858 | { "uint16_operand", { CONST_INT }}, \ | |
2b7972b0 MM |
1859 | { "reg_or_int16_operand", { REG, SUBREG, CONST_INT }}, \ |
1860 | { "reg_or_uint16_operand", { REG, SUBREG, CONST_INT }}, \ | |
1861 | { "reg_or_cmp_int16_operand", { REG, SUBREG, CONST_INT }}, \ | |
56e2e762 | 1862 | { "reg_or_eq_int16_operand", { REG, SUBREG, CONST_INT }}, \ |
2b7972b0 MM |
1863 | { "cmp_int16_operand", { CONST_INT }}, \ |
1864 | { "call_address_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \ | |
56e2e762 | 1865 | { "extend_operand", { REG, SUBREG, MEM }}, \ |
2b7972b0 | 1866 | { "small_insn_p", { INSN, CALL_INSN, JUMP_INSN }}, \ |
d2a73f8e | 1867 | { "m32r_block_immediate_operand",{ CONST_INT }}, \ |
997718c7 RH |
1868 | { "large_insn_p", { INSN, CALL_INSN, JUMP_INSN }}, \ |
1869 | { "seth_add3_operand", { SYMBOL_REF, LABEL_REF, CONST }}, | |
2b7972b0 | 1870 |