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[gcc.git] / gcc / config / mmix / mmix.h
1 /* Definitions of target machine for GNU compiler, for MMIX.
2 Copyright (C) 2000, 2001, 2002, 2004 Free Software Foundation, Inc.
3 Contributed by Hans-Peter Nilsson (hp@bitrange.com)
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
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. */
21
22 #ifndef GCC_MMIX_H
23 #define GCC_MMIX_H
24
25 /* First, some local helper macros. Note that the "default" value of
26 FIXED_REGISTERS, CALL_USED_REGISTERS, REG_ALLOC_ORDER and
27 REG_CLASS_CONTENTS depend on these values. */
28 #define MMIX_RESERVED_GNU_ARG_0_REGNUM 231
29 #define MMIX_FIRST_ARG_REGNUM \
30 (TARGET_ABI_GNU ? MMIX_RESERVED_GNU_ARG_0_REGNUM : 16)
31 #define MMIX_FIRST_INCOMING_ARG_REGNUM \
32 (TARGET_ABI_GNU ? MMIX_RESERVED_GNU_ARG_0_REGNUM : 0)
33 #define MMIX_MAX_ARGS_IN_REGS 16
34
35 /* FIXME: This one isn't fully implemented yet. Return values larger than
36 one register are passed by reference in MMIX_STRUCT_VALUE_REGNUM by the
37 caller, except for return values of type "complex". */
38 #define MMIX_MAX_REGS_FOR_VALUE 16
39 #define MMIX_RETURN_VALUE_REGNUM \
40 (TARGET_ABI_GNU ? MMIX_RESERVED_GNU_ARG_0_REGNUM : 15)
41 #define MMIX_OUTGOING_RETURN_VALUE_REGNUM \
42 (TARGET_ABI_GNU ? MMIX_RESERVED_GNU_ARG_0_REGNUM : 0)
43 #define MMIX_STRUCT_VALUE_REGNUM 251
44 #define MMIX_STATIC_CHAIN_REGNUM 252
45 #define MMIX_FRAME_POINTER_REGNUM 253
46 #define MMIX_STACK_POINTER_REGNUM 254
47 #define MMIX_LAST_GENERAL_REGISTER 255
48 #define MMIX_INCOMING_RETURN_ADDRESS_REGNUM MMIX_rJ_REGNUM
49 #define MMIX_HIMULT_REGNUM 258
50 #define MMIX_REMAINDER_REGNUM MMIX_rR_REGNUM
51 #define MMIX_ARG_POINTER_REGNUM 261
52 #define MMIX_rO_REGNUM 262
53 #define MMIX_LAST_STACK_REGISTER_REGNUM 31
54
55 /* Four registers; "ideally, these registers should be call-clobbered", so
56 just grab a bunch of the common clobbered registers. FIXME: Last
57 registers of return-value should be used, with an error if there's a
58 return-value (that collides in size). */
59 #define MMIX_EH_RETURN_DATA_REGNO_START (MMIX_STRUCT_VALUE_REGNUM - 4)
60
61 /* Try to keep the definitions from running away on their own. */
62 #if (MMIX_EH_RETURN_DATA_REGNO_START \
63 != MMIX_RESERVED_GNU_ARG_0_REGNUM + MMIX_MAX_ARGS_IN_REGS)
64 #error MMIX register definition inconsistency
65 #endif
66
67 #if (MMIX_MAX_REGS_FOR_VALUE + MMIX_MAX_ARGS_IN_REGS > 32)
68 #error MMIX parameters and return values bad, more than 32 registers
69 #endif
70
71 /* This chosen as "a call-clobbered hard register that is otherwise
72 untouched by the epilogue". */
73 #define MMIX_EH_RETURN_STACKADJ_REGNUM MMIX_STATIC_CHAIN_REGNUM
74
75 #ifdef REG_OK_STRICT
76 # define MMIX_REG_OK_STRICT 1
77 #else
78 # define MMIX_REG_OK_STRICT 0
79 #endif
80
81 #define MMIX_FUNCTION_ARG_SIZE(MODE, TYPE) \
82 ((MODE) != BLKmode ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE))
83
84 /* Declarations for helper variables that are not tied to a particular
85 target macro. */
86 extern GTY(()) rtx mmix_compare_op0;
87 extern GTY(()) rtx mmix_compare_op1;
88
89 /* Per-function machine data. This is normally an opaque type just
90 defined and used in the tm.c file, but we need to see the definition in
91 mmix.md too. */
92 struct machine_function GTY(())
93 {
94 int has_landing_pad;
95 int highest_saved_stack_register;
96 int in_prologue;
97 };
98
99 /* For these target macros, there is no generic documentation here. You
100 should read `Using and Porting GCC' for that. Only comments specific
101 to the MMIX target are here.
102
103 There are however references to the specific texinfo node (comments
104 with "Node:"), so there should be little or nothing amiss. Probably
105 the opposite, since we don't have to care about old littering and
106 soon outdated generic comments. */
107
108 /* Node: Driver */
109
110 /* User symbols are in the same name-space as built-in symbols, but we
111 don't need the built-in symbols, so remove those and instead apply
112 stricter operand checking. Don't warn when expanding insns. */
113 #define ASM_SPEC "-no-predefined-syms -x"
114
115 /* Pass on -mset-program-start=N and -mset-data-start=M to the linker.
116 Provide default program start 0x100 unless -mno-set-program-start.
117 Don't do this if linking relocatably, with -r. For a final link,
118 produce mmo, unless ELF is requested or when linking relocatably. */
119 #define LINK_SPEC \
120 "%{mset-program-start=*:--defsym __.MMIX.start..text=%*}\
121 %{mset-data-start=*:--defsym __.MMIX.start..data=%*}\
122 %{!mset-program-start=*:\
123 %{!mno-set-program-start:\
124 %{!r:--defsym __.MMIX.start..text=0x100}}}\
125 %{!melf:%{!r:-m mmo}}%{melf|r:-m elf64mmix}"
126
127 /* FIXME: There's no provision for profiling here. */
128 #define STARTFILE_SPEC \
129 "crti%O%s crtbegin%O%s"
130
131 #define ENDFILE_SPEC "crtend%O%s crtn%O%s"
132
133 /* Node: Run-time Target */
134
135 /* Define __LONG_MAX__, since we're advised not to change glimits.h. */
136 #define TARGET_CPU_CPP_BUILTINS() \
137 do \
138 { \
139 builtin_define ("__mmix__"); \
140 builtin_define ("__MMIX__"); \
141 if (TARGET_ABI_GNU) \
142 builtin_define ("__MMIX_ABI_GNU__"); \
143 else \
144 builtin_define ("__MMIX_ABI_MMIXWARE__"); \
145 } \
146 while (0)
147
148 extern int target_flags;
149
150 #define TARGET_DEFAULT \
151 (MASK_BRANCH_PREDICT | MASK_BASE_ADDRESSES | MASK_USE_RETURN_INSN)
152
153 /* Unfortunately, this must not reference anything in "mmix.c". */
154 #define TARGET_VERSION \
155 fprintf (stderr, " (MMIX)")
156
157 #define OVERRIDE_OPTIONS mmix_override_options ()
158
159 #define OPTIMIZATION_OPTIONS(LEVEL, SIZE) \
160 do \
161 { \
162 if (LEVEL >= 1) \
163 flag_regmove = TRUE; \
164 \
165 if (SIZE || LEVEL > 1) \
166 { \
167 flag_omit_frame_pointer = TRUE; \
168 flag_strength_reduce = FALSE; \
169 } \
170 } \
171 while (0)
172
173 /* This one will have to wait a little bit; right now we can't debug
174 neither with or without a frame-pointer. */
175 /* #define CAN_DEBUG_WITHOUT_FP */
176
177
178 /* Node: Per-Function Data */
179 #define INIT_EXPANDERS mmix_init_expanders ()
180
181
182 /* Node: Storage Layout */
183 /* I see no bit-field instructions. Anyway, the common order is from low
184 to high, as the power of two, hence little-endian. */
185 #define BITS_BIG_ENDIAN 0
186 #define BYTES_BIG_ENDIAN 1
187 #define WORDS_BIG_ENDIAN 1
188 #define FLOAT_WORDS_BIG_ENDIAN 1
189 #define UNITS_PER_WORD 8
190
191 /* FIXME: Promotion of modes currently generates slow code, extending
192 before every operation. */
193 /* I'm a little bit undecided about this one. It might be beneficial to
194 promote all operations. */
195
196 #define PROMOTE_FUNCTION_MODE(MODE, UNSIGNEDP, TYPE) \
197 do { \
198 if (GET_MODE_CLASS (MODE) == MODE_INT \
199 && GET_MODE_SIZE (MODE) < 8) \
200 { \
201 (MODE) = DImode; \
202 /* Do the following some time later, \
203 scrutinizing differences. */ \
204 if (0) (UNSIGNEDP) = 0; \
205 } \
206 } while (0)
207
208 /* We need to align everything to 64 bits that can affect the alignment
209 of other types. Since address N is interpreted in MMIX as (N modulo
210 access_size), we must align. */
211 #define PARM_BOUNDARY 64
212 #define STACK_BOUNDARY 64
213 #define FUNCTION_BOUNDARY 32
214 #define BIGGEST_ALIGNMENT 64
215
216 /* This one is only used in the ADA front end. */
217 #define MINIMUM_ATOMIC_ALIGNMENT 8
218
219 /* Copied from elfos.h. */
220 #define MAX_OFILE_ALIGNMENT (32768 * 8)
221
222 #define DATA_ALIGNMENT(TYPE, BASIC_ALIGN) \
223 mmix_data_alignment (TYPE, BASIC_ALIGN)
224
225 #define CONSTANT_ALIGNMENT(CONSTANT, BASIC_ALIGN) \
226 mmix_constant_alignment (CONSTANT, BASIC_ALIGN)
227
228 #define LOCAL_ALIGNMENT(TYPE, BASIC_ALIGN) \
229 mmix_local_alignment (TYPE, BASIC_ALIGN)
230
231 /* Following other ports, this seems to most commonly be the word-size,
232 so let's do that here too. */
233 #define EMPTY_FIELD_BOUNDARY 64
234
235 /* We chose to have this low solely for similarity with the alpha. It has
236 nothing to do with passing the tests dg/c99-scope-2 and
237 execute/align-1.c. Nothing. Though the tests seem wrong. Padding of
238 the structure is automatically added to get alignment when needed if we
239 set this to just byte-boundary. */
240 #define STRUCTURE_SIZE_BOUNDARY 8
241
242 /* The lower bits are ignored. */
243 #define STRICT_ALIGNMENT 1
244
245
246 /* Node: Type Layout */
247
248 /* It might seem more natural to have 64-bit ints on a 64-bit machine,
249 but then an occasional MMIX programmer needs to know how to put a lot
250 of __attribute__ stuff to get to the 8, 16 and 32-bit modes rather
251 than the "intuitive" char, short and int types. */
252 #define INT_TYPE_SIZE 32
253 #define SHORT_TYPE_SIZE 16
254 #define LONG_LONG_TYPE_SIZE 64
255
256 #define FLOAT_TYPE_SIZE 32
257 #define DOUBLE_TYPE_SIZE 64
258 #define LONG_DOUBLE_TYPE_SIZE 64
259
260 #define DEFAULT_SIGNED_CHAR 1
261
262
263 /* Node: Register Basics */
264 /* We tell GCC about all 256 general registers, and we also include
265 rD, rE, rH, rJ, rR and rO (in that order) so we can describe what insns
266 clobber them. We use a faked register for the argument pointer. It is
267 always eliminated towards the frame-pointer or the stack-pointer, never
268 output in assembly. Any fixed register would do for this, like $255,
269 but future debugging is easier when using a separate register. It
270 counts as a global register for pseudorandom reasons. */
271 #define FIRST_PSEUDO_REGISTER 263
272
273 /* We treat general registers with no assigned purpose as fixed. The
274 stack pointer, $254, is also fixed. Register $255 is referred to as a
275 temporary register in the MMIX papers, and used as such in mmixal, so
276 it should not be used as a stack pointer. We set it to fixed, and use
277 it "manually" at times of despair. */
278 #define FIXED_REGISTERS \
279 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
280 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
281 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
282 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
283 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
284 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
285 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
286 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
287 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
288 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
289 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
290 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
291 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
292 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
293 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
294 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, \
295 1, 1, 0, 0, 0, 1, 1 \
296 }
297
298 /* General registers are fixed and therefore "historically" marked
299 call-used. (FIXME: This has changed). Registers $15..$31 are
300 call-clobbered; we'll put arguments in $16 and up, and we need $15 for
301 the MMIX register-stack "hole". */
302 #define CALL_USED_REGISTERS \
303 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, \
304 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
305 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
306 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
307 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
308 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
309 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
310 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
311 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
312 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
313 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
314 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
315 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
316 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
317 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
318 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, \
319 1, 1, 1, 1, 1, 1, 1 \
320 }
321
322 #define CONDITIONAL_REGISTER_USAGE mmix_conditional_register_usage ()
323
324 /* No INCOMING_REGNO or OUTGOING_REGNO, since those macros are not usable
325 for MMIX: it doesn't have a fixed register window size. FIXME: Perhaps
326 we should say something about $0..$15 may sometimes be the incoming
327 $16..$31. Those macros need better documentation; it looks like
328 they're just bogus and that FUNCTION_INCOMING_ARG_REGNO_P and
329 FUNCTION_OUTGOING_VALUE should be used where they're used. For the
330 moment, do nothing; things seem to work anyway. */
331
332 /* Defining LOCAL_REGNO is necessary in presence of prologue/epilogue,
333 else GCC will be confused that those registers aren't saved and
334 restored. */
335 #define LOCAL_REGNO(REGNO) mmix_local_regno (REGNO)
336
337 /* Node: Allocation Order */
338
339 /* We should allocate registers from 0 to 31 by increasing number, because
340 I think that's what people expect. Beyond that, just use
341 call-clobbered global registers first, then call-clobbered special
342 registers. Last, the fixed registers. */
343 #define MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER \
344 { 0, 1, 2, 3, 4, 5, 6, 7, \
345 8, 9, 10, 11, 12, 13, 14, 15, \
346 16, 17, 18, 19, 20, 21, 22, 23, \
347 24, 25, 26, 27, 28, 29, 30, 31, \
348 \
349 252, 251, 250, 249, 248, 247, \
350 \
351 253, \
352 \
353 258, 260, 259, \
354 \
355 32, 33, 34, 35, 36, 37, 38, 39, \
356 40, 41, 42, 43, 44, 45, 46, 47, \
357 48, 49, 50, 51, 52, 53, 54, 55, \
358 56, 57, 58, 59, 60, 61, 62, 63, \
359 64, 65, 66, 67, 68, 69, 70, 71, \
360 72, 73, 74, 75, 76, 77, 78, 79, \
361 80, 81, 82, 83, 84, 85, 86, 87, \
362 88, 89, 90, 91, 92, 93, 94, 95, \
363 96, 97, 98, 99, 100, 101, 102, 103, \
364 104, 105, 106, 107, 108, 109, 110, 111, \
365 112, 113, 114, 115, 116, 117, 118, 119, \
366 120, 121, 122, 123, 124, 125, 126, 127, \
367 128, 129, 130, 131, 132, 133, 134, 135, \
368 136, 137, 138, 139, 140, 141, 142, 143, \
369 144, 145, 146, 147, 148, 149, 150, 151, \
370 152, 153, 154, 155, 156, 157, 158, 159, \
371 160, 161, 162, 163, 164, 165, 166, 167, \
372 168, 169, 170, 171, 172, 173, 174, 175, \
373 176, 177, 178, 179, 180, 181, 182, 183, \
374 184, 185, 186, 187, 188, 189, 190, 191, \
375 192, 193, 194, 195, 196, 197, 198, 199, \
376 200, 201, 202, 203, 204, 205, 206, 207, \
377 208, 209, 210, 211, 212, 213, 214, 215, \
378 216, 217, 218, 219, 220, 221, 222, 223, \
379 224, 225, 226, 227, 228, 229, 230, 231, \
380 232, 233, 234, 235, 236, 237, 238, 239, \
381 240, 241, 242, 243, 244, 245, 246, \
382 \
383 254, 255, 256, 257, 261, 262 \
384 }
385
386 /* As a convenience, we put this nearby, for ease of comparison.
387 First, call-clobbered registers in reverse order of assignment as
388 parameters (also the top ones; not because they're parameters, but
389 for continuity).
390
391 Second, saved registers that go on the register-stack.
392
393 Third, special registers rH, rR and rJ. They should not normally be
394 allocated, but since they're call-clobbered, it is cheaper to use one
395 of them than using a call-saved register for a call-clobbered use,
396 assuming it is referenced a very limited number of times. Other global
397 and fixed registers come next; they are never allocated. */
398 #define MMIX_GNU_ABI_REG_ALLOC_ORDER \
399 { 252, 251, 250, 249, 248, 247, 246, \
400 245, 244, 243, 242, 241, 240, 239, 238, \
401 237, 236, 235, 234, 233, 232, 231, \
402 \
403 0, 1, 2, 3, 4, 5, 6, 7, \
404 8, 9, 10, 11, 12, 13, 14, 15, \
405 16, 17, 18, 19, 20, 21, 22, 23, \
406 24, 25, 26, 27, 28, 29, 30, 31, \
407 \
408 253, \
409 \
410 258, 260, 259, \
411 \
412 32, 33, 34, 35, 36, 37, 38, 39, \
413 40, 41, 42, 43, 44, 45, 46, 47, \
414 48, 49, 50, 51, 52, 53, 54, 55, \
415 56, 57, 58, 59, 60, 61, 62, 63, \
416 64, 65, 66, 67, 68, 69, 70, 71, \
417 72, 73, 74, 75, 76, 77, 78, 79, \
418 80, 81, 82, 83, 84, 85, 86, 87, \
419 88, 89, 90, 91, 92, 93, 94, 95, \
420 96, 97, 98, 99, 100, 101, 102, 103, \
421 104, 105, 106, 107, 108, 109, 110, 111, \
422 112, 113, 114, 115, 116, 117, 118, 119, \
423 120, 121, 122, 123, 124, 125, 126, 127, \
424 128, 129, 130, 131, 132, 133, 134, 135, \
425 136, 137, 138, 139, 140, 141, 142, 143, \
426 144, 145, 146, 147, 148, 149, 150, 151, \
427 152, 153, 154, 155, 156, 157, 158, 159, \
428 160, 161, 162, 163, 164, 165, 166, 167, \
429 168, 169, 170, 171, 172, 173, 174, 175, \
430 176, 177, 178, 179, 180, 181, 182, 183, \
431 184, 185, 186, 187, 188, 189, 190, 191, \
432 192, 193, 194, 195, 196, 197, 198, 199, \
433 200, 201, 202, 203, 204, 205, 206, 207, \
434 208, 209, 210, 211, 212, 213, 214, 215, \
435 216, 217, 218, 219, 220, 221, 222, 223, \
436 224, 225, 226, 227, 228, 229, 230, \
437 \
438 254, 255, 256, 257, 261, 262 \
439 }
440
441 /* The default one. */
442 #define REG_ALLOC_ORDER MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER
443
444 /* Node: Values in Registers */
445
446 #define HARD_REGNO_NREGS(REGNO, MODE) \
447 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
448 / UNITS_PER_WORD)
449
450 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
451
452 /* Note that no register can really be accessed in single-float mode, so
453 we *can* say 1 here. FIXME: Will TRT happen for single-float, or do
454 we have to punt to libgcc1.asm? */
455 #define MODES_TIEABLE_P(MODE1, MODE2) 1
456
457
458 /* Node: Leaf Functions */
459 /* (empty) */
460
461
462 /* Node: Register Classes */
463
464 enum reg_class
465 {
466 NO_REGS, GENERAL_REGS, REMAINDER_REG, HIMULT_REG,
467 SYSTEM_REGS, ALL_REGS, LIM_REG_CLASSES
468 };
469
470 #define N_REG_CLASSES (int) LIM_REG_CLASSES
471
472 #define REG_CLASS_NAMES \
473 {"NO_REGS", "GENERAL_REGS", "REMAINDER_REG", "HIMULT_REG", \
474 "SYSTEM_REGS", "ALL_REGS"}
475
476 /* Note that the contents of each item is always 32 bits. */
477 #define REG_CLASS_CONTENTS \
478 {{0, 0, 0, 0, 0, 0, 0, 0, 0}, \
479 {~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x20}, \
480 {0, 0, 0, 0, 0, 0, 0, 0, 0x10}, \
481 {0, 0, 0, 0, 0, 0, 0, 0, 4}, \
482 {0, 0, 0, 0, 0, 0, 0, 0, 0x7f}, \
483 {~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x7f}}
484
485 #define REGNO_REG_CLASS(REGNO) \
486 ((REGNO) <= MMIX_LAST_GENERAL_REGISTER \
487 || (REGNO) == MMIX_ARG_POINTER_REGNUM \
488 ? GENERAL_REGS \
489 : (REGNO) == MMIX_REMAINDER_REGNUM ? REMAINDER_REG \
490 : (REGNO) == MMIX_HIMULT_REGNUM ? HIMULT_REG : SYSTEM_REGS)
491
492 #define BASE_REG_CLASS GENERAL_REGS
493
494 #define INDEX_REG_CLASS GENERAL_REGS
495
496 #define REG_CLASS_FROM_LETTER(CHAR) \
497 ((CHAR) == 'x' ? SYSTEM_REGS \
498 : (CHAR) == 'y' ? REMAINDER_REG \
499 : (CHAR) == 'z' ? HIMULT_REG : NO_REGS)
500
501 #define REGNO_OK_FOR_BASE_P(REGNO) \
502 ((REGNO) <= MMIX_LAST_GENERAL_REGISTER \
503 || (REGNO) == MMIX_ARG_POINTER_REGNUM \
504 || (reg_renumber[REGNO] > 0 \
505 && reg_renumber[REGNO] <= MMIX_LAST_GENERAL_REGISTER))
506
507 #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P (REGNO)
508
509 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
510 mmix_preferred_reload_class (X, CLASS)
511
512 #define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) \
513 mmix_preferred_output_reload_class (X, CLASS)
514
515 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
516 mmix_secondary_reload_class (CLASS, MODE, X, 1)
517
518 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
519 mmix_secondary_reload_class (CLASS, MODE, X, 0)
520
521 #define CLASS_MAX_NREGS(CLASS, MODE) HARD_REGNO_NREGS (CLASS, MODE)
522
523 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
524 mmix_const_ok_for_letter_p (VALUE, C)
525
526 #define EXTRA_CONSTRAINT(VALUE, C) \
527 mmix_extra_constraint (VALUE, C, MMIX_REG_OK_STRICT)
528
529 /* Do we need anything serious here? Yes, any FLOT constant. */
530 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
531 mmix_const_double_ok_for_letter_p (VALUE, C)
532
533
534 /* Node: Frame Layout */
535
536 #define STACK_GROWS_DOWNWARD
537 #define FRAME_GROWS_DOWNWARD
538
539 #define STARTING_FRAME_OFFSET \
540 mmix_starting_frame_offset ()
541
542 #define FIRST_PARM_OFFSET(FUNDECL) 0
543
544 #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) \
545 mmix_dynamic_chain_address (FRAMEADDR)
546
547 /* FIXME: It seems RETURN_ADDR_OFFSET is undocumented. */
548
549 #define SETUP_FRAME_ADDRESSES() \
550 mmix_setup_frame_addresses ()
551
552 #define RETURN_ADDR_RTX(COUNT, FRAME) \
553 mmix_return_addr_rtx (COUNT, FRAME)
554
555 /* It's in rJ before we store it somewhere. */
556 #define INCOMING_RETURN_ADDR_RTX \
557 gen_rtx_REG (Pmode, MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
558
559 /* FIXME: This does not seem properly documented or cross-indexed.
560 Nowhere except in the code does it say it *has* to be in the range
561 0..255, or else it will be truncated. That goes for the default too. */
562 #define DWARF_FRAME_RETURN_COLUMN \
563 DWARF_FRAME_REGNUM (MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
564
565 /* No return address is stored there. */
566 #define INCOMING_FRAME_SP_OFFSET 0
567
568 /* Node: Stack Checking */
569 /* (empty) */
570
571
572 /* Node: Exception Handling */
573
574 #define EH_RETURN_DATA_REGNO(N) \
575 mmix_eh_return_data_regno (N)
576
577 #define EH_RETURN_STACKADJ_RTX \
578 mmix_eh_return_stackadj_rtx ()
579
580 #define EH_RETURN_HANDLER_RTX \
581 mmix_eh_return_handler_rtx ()
582
583 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
584 mmix_asm_preferred_eh_data_format (CODE, GLOBAL)
585
586 /* Node: Frame Registers */
587 #define STACK_POINTER_REGNUM MMIX_STACK_POINTER_REGNUM
588
589 /* Perhaps we can use HARD_FRAME_POINTER_REGNUM and decide later on
590 what register we want to use. */
591 #define FRAME_POINTER_REGNUM MMIX_FRAME_POINTER_REGNUM
592 #define ARG_POINTER_REGNUM MMIX_ARG_POINTER_REGNUM
593
594 #define STATIC_CHAIN_REGNUM MMIX_STATIC_CHAIN_REGNUM
595
596
597 /* Node: Elimination */
598 /* FIXME: Is this requirement built-in? Anyway, we should try to get rid
599 of it; we can deduce the value. */
600 #define FRAME_POINTER_REQUIRED current_function_has_nonlocal_label
601
602 /* The frame-pointer is stored in a location that either counts to the
603 offset of incoming parameters, or that counts to the offset of the
604 frame, so we can't use a single offset. We therefore eliminate those
605 two separately. */
606 #define ELIMINABLE_REGS \
607 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
608 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
609 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
610
611 /* We need not worry about when the frame-pointer is required for other
612 reasons; GCC takes care of those cases. */
613 #define CAN_ELIMINATE(FROM, TO) 1
614
615 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
616 (OFFSET) = mmix_initial_elimination_offset (FROM, TO)
617
618
619 /* Node: Stack Arguments */
620
621 #define ACCUMULATE_OUTGOING_ARGS 1
622
623 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACKSIZE) 0
624
625
626 /* Node: Register Arguments */
627 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
628 mmix_function_arg (&(CUM), MODE, TYPE, NAMED, 0)
629
630 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
631 mmix_function_arg (&(CUM), MODE, TYPE, NAMED, 1)
632
633 typedef struct { int regs; int lib; } CUMULATIVE_ARGS;
634
635 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
636 ((CUM).regs = 0, (CUM).lib = ((LIBNAME) != 0))
637
638 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
639 ((CUM).regs \
640 = ((targetm.calls.must_pass_in_stack (MODE, TYPE)) \
641 || (MMIX_FUNCTION_ARG_SIZE (MODE, TYPE) > 8 \
642 && !TARGET_LIBFUNC && !(CUM).lib)) \
643 ? (MMIX_MAX_ARGS_IN_REGS) + 1 \
644 : (CUM).regs + (7 + (MMIX_FUNCTION_ARG_SIZE (MODE, TYPE))) / 8)
645
646 #define FUNCTION_ARG_REGNO_P(REGNO) \
647 mmix_function_arg_regno_p (REGNO, 0)
648
649 #define FUNCTION_INCOMING_ARG_REGNO_P(REGNO) \
650 mmix_function_arg_regno_p (REGNO, 1)
651
652
653 /* Node: Register Arguments */
654
655 #define FUNCTION_VALUE(VALTYPE, FUNC) \
656 gen_rtx_REG (TYPE_MODE (VALTYPE), MMIX_RETURN_VALUE_REGNUM)
657
658 /* This needs to take care of the register hole for complex return values. */
659 #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \
660 mmix_function_outgoing_value (VALTYPE, FUNC)
661
662 #define LIBCALL_VALUE(MODE) \
663 gen_rtx_REG (MODE, MMIX_RETURN_VALUE_REGNUM)
664
665 #define FUNCTION_VALUE_REGNO_P(REGNO) \
666 mmix_function_value_regno_p (REGNO)
667
668
669 /* Node: Caller Saves */
670 /* (empty) */
671
672
673 /* Node: Function Entry */
674
675 /* See mmix.c for TARGET_ASM_FUNCTION_PROLOGUE and
676 TARGET_ASM_FUNCTION_EPILOGUE. */
677
678 /* We need to say that the epilogue uses the return address, so the
679 initial-value machinery restores it. FIXME: Some targets
680 conditionalize on "reload_completed &&". Investigate difference.
681 FIXME: Not needed if nonlocal_goto_stack_level. */
682 #define EPILOGUE_USES(REGNO) \
683 ((REGNO) == MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
684
685 /* Node: Profiling */
686 #define FUNCTION_PROFILER(FILE, LABELNO) \
687 mmix_function_profiler (FILE, LABELNO)
688
689 /* Node: Trampolines */
690
691 #define TRAMPOLINE_TEMPLATE(FILE) \
692 mmix_trampoline_template (FILE)
693
694 #define TRAMPOLINE_SIZE mmix_trampoline_size
695 #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
696 mmix_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
697
698
699 /* Node: Addressing Modes */
700
701 #define CONSTANT_ADDRESS_P(X) \
702 mmix_constant_address_p (X)
703
704 #define MAX_REGS_PER_ADDRESS 2
705
706 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
707 if (mmix_legitimate_address (MODE, X, MMIX_REG_OK_STRICT)) \
708 goto LABEL
709
710 #ifndef REG_OK_STRICT
711 # define REG_OK_FOR_BASE_P(X) \
712 (REGNO (X) <= MMIX_LAST_GENERAL_REGISTER \
713 || REGNO (X) == MMIX_ARG_POINTER_REGNUM \
714 || REGNO (X) >= FIRST_PSEUDO_REGISTER)
715 #else
716 # define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
717 #endif /* REG_OK_STRICT */
718
719 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
720
721 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
722
723 #define LEGITIMATE_CONSTANT_P(X) \
724 mmix_legitimate_constant_p (X)
725
726
727 /* Node: Condition Code */
728
729 #define SELECT_CC_MODE(OP, X, Y) \
730 mmix_select_cc_mode (OP, X, Y)
731
732 /* A definition of CANONICALIZE_COMPARISON that changed LE and GT
733 comparisons with -1 to LT and GE respectively, and LT, LTU, GE or GEU
734 comparisons with 256 to 255 and LE, LEU, GT and GTU has been
735 ineffective; the code path for performing the changes did not trig for
736 neither the GCC testsuite nor ghostscript-6.52 nor Knuth's mmix.tar.gz
737 itself (core GCC functionality supposedly handling it) with sources
738 from 2002-06-06. */
739
740 #define REVERSIBLE_CC_MODE(MODE) \
741 mmix_reversible_cc_mode (MODE)
742
743
744 /* Node: Costs */
745
746 /* The special registers can only move to and from general regs, and we
747 need to check that their constraints match, so say 3 for them. */
748 /* WARNING: gcc-2.7.2.2 i686-pc-linux-gnulibc1 (as shipped with RH 4.2)
749 miscompiles reload1.c:reload_cse_simplify_set; a call to
750 reload_cse_regno_equal_p is missing when checking if a substitution of
751 a register setting is valid if this is defined to just the expression
752 in mmix_register_move_cost.
753
754 Symptom: a (all?) register setting is optimized away for e.g.
755 "char *p1(char *p) { return p+1; }" and the value of register zero ($0)
756 is returned.
757
758 We can workaround by making this a function call - unknown if this
759 causes dire speed effects. */
760 #define REGISTER_MOVE_COST(MODE, FROM, TO) \
761 mmix_register_move_cost (MODE, FROM, TO)
762
763 #define SLOW_BYTE_ACCESS 0
764
765
766 /* Node: Sections */
767
768 /* This must be a constant string, since it's used in crtstuff.c. */
769 #define TEXT_SECTION_ASM_OP \
770 "\t.text ! mmixal:= 9H LOC 8B"
771
772 /* FIXME: Not documented. */
773 #define DATA_SECTION_ASM_OP \
774 mmix_data_section_asm_op ()
775
776 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata"
777
778 /* Node: PIC */
779 /* (empty) */
780
781
782 /* Node: File Framework */
783
784 /* While any other punctuation character but ";" would do, we prefer "%"
785 or "!"; "!" is an unary operator and so will not be mistakenly included
786 in correctly formed expressions. The hash character adds mass; catches
787 the eye. We can't have it as a comment char by itself, since it's a
788 hex-number prefix. */
789 #define ASM_COMMENT_START "!#"
790
791 /* These aren't currently functional. We just keep them as markers. */
792 #define ASM_APP_ON "%APP\n"
793 #define ASM_APP_OFF "%NO_APP\n"
794
795 #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \
796 mmix_asm_output_source_filename (STREAM, NAME)
797
798 #define OUTPUT_QUOTED_STRING(STREAM, STRING) \
799 mmix_output_quoted_string (STREAM, STRING, strlen (STRING))
800
801 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
802
803 /* Node: Data Output */
804
805 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
806 mmix_asm_output_ascii (STREAM, PTR, LEN)
807
808 /* Node: Uninitialized Data */
809
810 #define ASM_OUTPUT_ALIGNED_COMMON(ST, N, S, A) \
811 mmix_asm_output_aligned_common (ST, N, S, A)
812
813 #define ASM_OUTPUT_ALIGNED_LOCAL(ST, N, S, A) \
814 mmix_asm_output_aligned_local (ST, N, S, A)
815
816
817 /* Node: Label Output */
818
819 #define ASM_OUTPUT_LABEL(STREAM, NAME) \
820 mmix_asm_output_label (STREAM, NAME)
821
822 #define ASM_OUTPUT_INTERNAL_LABEL(STREAM, NAME) \
823 mmix_asm_output_internal_label (STREAM, NAME)
824
825 #define ASM_DECLARE_REGISTER_GLOBAL(STREAM, DECL, REGNO, NAME) \
826 mmix_asm_declare_register_global (STREAM, DECL, REGNO, NAME)
827
828 #define GLOBAL_ASM_OP "\t.global "
829
830 #define ASM_WEAKEN_LABEL(STREAM, NAME) \
831 mmix_asm_weaken_label (STREAM, NAME)
832
833 #define MAKE_DECL_ONE_ONLY(DECL) \
834 mmix_make_decl_one_only (DECL)
835
836 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
837 mmix_asm_output_labelref (STREAM, NAME)
838
839 /* We insert a ":" to disambiguate against user symbols like L5. */
840 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
841 sprintf (LABEL, "*%s:%ld", PREFIX, (long)(NUM))
842
843 /* Insert "::"; these are rarer than internal labels. FIXME: Make sure no
844 ":" is seen in the object file; we don't really want that mmixal
845 feature visible there. We don't want the default, which uses a dot;
846 that'd be incompatible with mmixal. */
847 #define ASM_PN_FORMAT "%s::%lu"
848
849 #define ASM_OUTPUT_DEF(STREAM, NAME, VALUE) \
850 mmix_asm_output_def (STREAM, NAME, VALUE)
851
852 /* Node: Macros for Initialization */
853 /* We're compiling to ELF and linking to MMO; fundamental ELF features
854 that GCC depend on are there. */
855
856 /* These must be constant strings, since they're used in crtstuff.c. */
857 #define INIT_SECTION_ASM_OP "\t.section .init,\"ax\" ! mmixal-incompatible"
858
859 #define FINI_SECTION_ASM_OP "\t.section .fini,\"ax\" ! mmixal-incompatible"
860
861 #define OBJECT_FORMAT_ELF
862
863
864 /* Node: Instruction Output */
865
866 /* The non-$ register names must be prefixed with ":", since they're
867 affected by PREFIX. We provide the non-colon names as additional
868 names. */
869 #define REGISTER_NAMES \
870 {"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", \
871 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", \
872 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", \
873 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31", \
874 "$32", "$33", "$34", "$35", "$36", "$37", "$38", "$39", \
875 "$40", "$41", "$42", "$43", "$44", "$45", "$46", "$47", \
876 "$48", "$49", "$50", "$51", "$52", "$53", "$54", "$55", \
877 "$56", "$57", "$58", "$59", "$60", "$61", "$62", "$63", \
878 "$64", "$65", "$66", "$67", "$68", "$69", "$70", "$71", \
879 "$72", "$73", "$74", "$75", "$76", "$77", "$78", "$79", \
880 "$80", "$81", "$82", "$83", "$84", "$85", "$86", "$87", \
881 "$88", "$89", "$90", "$91", "$92", "$93", "$94", "$95", \
882 "$96", "$97", "$98", "$99", "$100", "$101", "$102", "$103", \
883 "$104", "$105", "$106", "$107", "$108", "$109", "$110", "$111", \
884 "$112", "$113", "$114", "$115", "$116", "$117", "$118", "$119", \
885 "$120", "$121", "$122", "$123", "$124", "$125", "$126", "$127", \
886 "$128", "$129", "$130", "$131", "$132", "$133", "$134", "$135", \
887 "$136", "$137", "$138", "$139", "$140", "$141", "$142", "$143", \
888 "$144", "$145", "$146", "$147", "$148", "$149", "$150", "$151", \
889 "$152", "$153", "$154", "$155", "$156", "$157", "$158", "$159", \
890 "$160", "$161", "$162", "$163", "$164", "$165", "$166", "$167", \
891 "$168", "$169", "$170", "$171", "$172", "$173", "$174", "$175", \
892 "$176", "$177", "$178", "$179", "$180", "$181", "$182", "$183", \
893 "$184", "$185", "$186", "$187", "$188", "$189", "$190", "$191", \
894 "$192", "$193", "$194", "$195", "$196", "$197", "$198", "$199", \
895 "$200", "$201", "$202", "$203", "$204", "$205", "$206", "$207", \
896 "$208", "$209", "$210", "$211", "$212", "$213", "$214", "$215", \
897 "$216", "$217", "$218", "$219", "$220", "$221", "$222", "$223", \
898 "$224", "$225", "$226", "$227", "$228", "$229", "$230", "$231", \
899 "$232", "$233", "$234", "$235", "$236", "$237", "$238", "$239", \
900 "$240", "$241", "$242", "$243", "$244", "$245", "$246", "$247", \
901 "$248", "$249", "$250", "$251", "$252", "$253", "$254", "$255", \
902 ":rD", ":rE", ":rH", ":rJ", ":rR", "ap_!BAD!", ":rO"}
903
904 #define ADDITIONAL_REGISTER_NAMES \
905 {{"sp", 254}, {":sp", 254}, {"rD", 256}, {"rE", 257}, \
906 {"rH", 258}, {"rJ", MMIX_rJ_REGNUM}, {"rO", MMIX_rO_REGNUM}}
907
908 #define PRINT_OPERAND(STREAM, X, CODE) \
909 mmix_print_operand (STREAM, X, CODE)
910
911 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
912 mmix_print_operand_punct_valid_p (CODE)
913
914 #define PRINT_OPERAND_ADDRESS(STREAM, X) \
915 mmix_print_operand_address (STREAM, X)
916
917 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
918 mmix_asm_output_reg_push (STREAM, REGNO)
919
920 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
921 mmix_asm_output_reg_pop (STREAM, REGNO)
922
923
924 /* Node: Dispatch Tables */
925
926 /* We define both types, since SImode is the better, but DImode the only
927 possible for mmixal so that's the one actually used. */
928 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
929 mmix_asm_output_addr_diff_elt (STREAM, BODY, VALUE, REL)
930
931 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
932 mmix_asm_output_addr_vec_elt (STREAM, VALUE)
933
934
935 /* Node: Exception Region Output */
936 /* (empty) */
937
938 /* Node: Alignment Output */
939
940 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
941 mmix_asm_output_skip (STREAM, NBYTES)
942
943 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
944 mmix_asm_output_align (STREAM, POWER)
945
946
947 /* Node: All Debuggers */
948
949 #define DBX_REGISTER_NUMBER(REGNO) \
950 mmix_dbx_register_number (REGNO)
951
952
953 /* Node: DBX Options */
954 /* (empty) */
955 /* Node: DBX Hooks */
956 /* (empty) */
957 /* Node: File Names and DBX */
958 /* (empty) */
959
960
961 /* Node: SDB and DWARF */
962 #define DWARF2_DEBUGGING_INFO 1
963 #define DWARF2_ASM_LINE_DEBUG_INFO 1
964
965 /* Node: Misc */
966
967 /* There's no way to get a PC-relative offset into tables for SImode, so
968 for the moment we have absolute entries in DImode.
969 When we're going ELF, these should be SImode and 1. */
970 #define CASE_VECTOR_MODE DImode
971 #define CASE_VECTOR_PC_RELATIVE 0
972
973 #define WORD_REGISTER_OPERATIONS
974
975 /* We have a choice, which makes this yet another parameter to tweak. The
976 gut feeling is currently that SIGN_EXTEND wins; "int" is more frequent
977 than "unsigned int", and we have signed characters. FIXME: measure. */
978 #define LOAD_EXTEND_OP(MODE) (TARGET_ZERO_EXTEND ? ZERO_EXTEND : SIGN_EXTEND)
979
980 #define MOVE_MAX 8
981
982 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
983
984 /* ??? MMIX allows a choice of STORE_FLAG_VALUE. Revisit later,
985 we don't have scc expanders yet. */
986
987 #define Pmode DImode
988
989 #define FUNCTION_MODE QImode
990
991 #define NO_IMPLICIT_EXTERN_C
992
993 #define HANDLE_SYSV_PRAGMA 1
994
995 /* These are checked. */
996 #define DOLLARS_IN_IDENTIFIERS 0
997 #define NO_DOLLAR_IN_LABEL
998 #define NO_DOT_IN_LABEL
999
1000 #endif /* GCC_MMIX_H */
1001 /*
1002 * Local variables:
1003 * eval: (c-set-style "gnu")
1004 * indent-tabs-mode: t
1005 * End:
1006 */