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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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1 /* Definitions of target machine for GNU compiler, for MMIX.
2 Copyright (C) 2000, 2001, 2002, 2004, 2005, 2007, 2008
3 Free Software Foundation, Inc.
4 Contributed by Hans-Peter Nilsson (hp@bitrange.com)
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
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 } \
169 } \
170 while (0)
171
172 /* This one will have to wait a little bit; right now we can't debug
173 neither with or without a frame-pointer. */
174 /* #define CAN_DEBUG_WITHOUT_FP */
175
176
177 /* Node: Per-Function Data */
178 #define INIT_EXPANDERS mmix_init_expanders ()
179
180
181 /* Node: Storage Layout */
182 /* I see no bit-field instructions. Anyway, the common order is from low
183 to high, as the power of two, hence little-endian. */
184 #define BITS_BIG_ENDIAN 0
185 #define BYTES_BIG_ENDIAN 1
186 #define WORDS_BIG_ENDIAN 1
187 #define FLOAT_WORDS_BIG_ENDIAN 1
188 #define UNITS_PER_WORD 8
189
190 /* FIXME: Promotion of modes currently generates slow code, extending
191 before every operation. */
192 /* I'm a little bit undecided about this one. It might be beneficial to
193 promote all operations. */
194
195 #define PROMOTE_FUNCTION_MODE(MODE, UNSIGNEDP, TYPE) \
196 do { \
197 if (GET_MODE_CLASS (MODE) == MODE_INT \
198 && GET_MODE_SIZE (MODE) < 8) \
199 { \
200 (MODE) = DImode; \
201 /* Do the following some time later, \
202 scrutinizing differences. */ \
203 if (0) (UNSIGNEDP) = 0; \
204 } \
205 } while (0)
206
207 /* We need to align everything to 64 bits that can affect the alignment
208 of other types. Since address N is interpreted in MMIX as (N modulo
209 access_size), we must align. */
210 #define PARM_BOUNDARY 64
211 #define STACK_BOUNDARY 64
212 #define FUNCTION_BOUNDARY 32
213 #define BIGGEST_ALIGNMENT 64
214
215 /* This one is only used in the ADA front end. */
216 #define MINIMUM_ATOMIC_ALIGNMENT 8
217
218 /* Copied from elfos.h. */
219 #define MAX_OFILE_ALIGNMENT (32768 * 8)
220
221 #define DATA_ALIGNMENT(TYPE, BASIC_ALIGN) \
222 mmix_data_alignment (TYPE, BASIC_ALIGN)
223
224 #define CONSTANT_ALIGNMENT(CONSTANT, BASIC_ALIGN) \
225 mmix_constant_alignment (CONSTANT, BASIC_ALIGN)
226
227 #define LOCAL_ALIGNMENT(TYPE, BASIC_ALIGN) \
228 mmix_local_alignment (TYPE, BASIC_ALIGN)
229
230 /* Following other ports, this seems to most commonly be the word-size,
231 so let's do that here too. */
232 #define EMPTY_FIELD_BOUNDARY 64
233
234 /* We chose to have this low solely for similarity with the alpha. It has
235 nothing to do with passing the tests dg/c99-scope-2 and
236 execute/align-1.c. Nothing. Though the tests seem wrong. Padding of
237 the structure is automatically added to get alignment when needed if we
238 set this to just byte-boundary. */
239 #define STRUCTURE_SIZE_BOUNDARY 8
240
241 /* The lower bits are ignored. */
242 #define STRICT_ALIGNMENT 1
243
244
245 /* Node: Type Layout */
246
247 /* It might seem more natural to have 64-bit ints on a 64-bit machine,
248 but then an occasional MMIX programmer needs to know how to put a lot
249 of __attribute__ stuff to get to the 8, 16 and 32-bit modes rather
250 than the "intuitive" char, short and int types. */
251 #define INT_TYPE_SIZE 32
252 #define SHORT_TYPE_SIZE 16
253 #define LONG_LONG_TYPE_SIZE 64
254
255 #define FLOAT_TYPE_SIZE 32
256 #define DOUBLE_TYPE_SIZE 64
257 #define LONG_DOUBLE_TYPE_SIZE 64
258
259 #define DEFAULT_SIGNED_CHAR 1
260
261
262 /* Node: Register Basics */
263 /* We tell GCC about all 256 general registers, and we also include
264 rD, rE, rH, rJ, rR and rO (in that order) so we can describe what insns
265 clobber them. We use a faked register for the argument pointer. It is
266 always eliminated towards the frame-pointer or the stack-pointer, never
267 output in assembly. Any fixed register would do for this, like $255,
268 but future debugging is easier when using a separate register. It
269 counts as a global register for pseudorandom reasons. */
270 #define FIRST_PSEUDO_REGISTER 263
271
272 /* We treat general registers with no assigned purpose as fixed. The
273 stack pointer, $254, is also fixed. Register $255 is referred to as a
274 temporary register in the MMIX papers, and used as such in mmixal, so
275 it should not be used as a stack pointer. We set it to fixed, and use
276 it "manually" at times of despair. */
277 #define FIXED_REGISTERS \
278 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
279 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
280 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
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, 0, 0, 0, 0, 0, 0, 0, 1, 1, \
294 1, 1, 0, 0, 0, 1, 1 \
295 }
296
297 /* General registers are fixed and therefore "historically" marked
298 call-used. (FIXME: This has changed). Registers $15..$31 are
299 call-clobbered; we'll put arguments in $16 and up, and we need $15 for
300 the MMIX register-stack "hole". */
301 #define CALL_USED_REGISTERS \
302 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, \
303 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 0, 1, 1, \
318 1, 1, 1, 1, 1, 1, 1 \
319 }
320
321 #define CONDITIONAL_REGISTER_USAGE mmix_conditional_register_usage ()
322
323 #define INCOMING_REGNO(OUT) mmix_opposite_regno (OUT, 0)
324
325 #define OUTGOING_REGNO(IN) mmix_opposite_regno (IN, 1)
326
327 /* Defining LOCAL_REGNO is necessary in presence of prologue/epilogue,
328 else GCC will be confused that those registers aren't saved and
329 restored. */
330 #define LOCAL_REGNO(REGNO) mmix_local_regno (REGNO)
331
332 /* Node: Allocation Order */
333
334 /* We should allocate registers from 0 to 31 by increasing number, because
335 I think that's what people expect. Beyond that, just use
336 call-clobbered global registers first, then call-clobbered special
337 registers. Last, the fixed registers. */
338 #define MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER \
339 { 0, 1, 2, 3, 4, 5, 6, 7, \
340 8, 9, 10, 11, 12, 13, 14, 15, \
341 16, 17, 18, 19, 20, 21, 22, 23, \
342 24, 25, 26, 27, 28, 29, 30, 31, \
343 \
344 252, 251, 250, 249, 248, 247, \
345 \
346 253, \
347 \
348 258, 260, 259, \
349 \
350 32, 33, 34, 35, 36, 37, 38, 39, \
351 40, 41, 42, 43, 44, 45, 46, 47, \
352 48, 49, 50, 51, 52, 53, 54, 55, \
353 56, 57, 58, 59, 60, 61, 62, 63, \
354 64, 65, 66, 67, 68, 69, 70, 71, \
355 72, 73, 74, 75, 76, 77, 78, 79, \
356 80, 81, 82, 83, 84, 85, 86, 87, \
357 88, 89, 90, 91, 92, 93, 94, 95, \
358 96, 97, 98, 99, 100, 101, 102, 103, \
359 104, 105, 106, 107, 108, 109, 110, 111, \
360 112, 113, 114, 115, 116, 117, 118, 119, \
361 120, 121, 122, 123, 124, 125, 126, 127, \
362 128, 129, 130, 131, 132, 133, 134, 135, \
363 136, 137, 138, 139, 140, 141, 142, 143, \
364 144, 145, 146, 147, 148, 149, 150, 151, \
365 152, 153, 154, 155, 156, 157, 158, 159, \
366 160, 161, 162, 163, 164, 165, 166, 167, \
367 168, 169, 170, 171, 172, 173, 174, 175, \
368 176, 177, 178, 179, 180, 181, 182, 183, \
369 184, 185, 186, 187, 188, 189, 190, 191, \
370 192, 193, 194, 195, 196, 197, 198, 199, \
371 200, 201, 202, 203, 204, 205, 206, 207, \
372 208, 209, 210, 211, 212, 213, 214, 215, \
373 216, 217, 218, 219, 220, 221, 222, 223, \
374 224, 225, 226, 227, 228, 229, 230, 231, \
375 232, 233, 234, 235, 236, 237, 238, 239, \
376 240, 241, 242, 243, 244, 245, 246, \
377 \
378 254, 255, 256, 257, 261, 262 \
379 }
380
381 /* As a convenience, we put this nearby, for ease of comparison.
382 First, call-clobbered registers in reverse order of assignment as
383 parameters (also the top ones; not because they're parameters, but
384 for continuity).
385
386 Second, saved registers that go on the register-stack.
387
388 Third, special registers rH, rR and rJ. They should not normally be
389 allocated, but since they're call-clobbered, it is cheaper to use one
390 of them than using a call-saved register for a call-clobbered use,
391 assuming it is referenced a very limited number of times. Other global
392 and fixed registers come next; they are never allocated. */
393 #define MMIX_GNU_ABI_REG_ALLOC_ORDER \
394 { 252, 251, 250, 249, 248, 247, 246, \
395 245, 244, 243, 242, 241, 240, 239, 238, \
396 237, 236, 235, 234, 233, 232, 231, \
397 \
398 0, 1, 2, 3, 4, 5, 6, 7, \
399 8, 9, 10, 11, 12, 13, 14, 15, \
400 16, 17, 18, 19, 20, 21, 22, 23, \
401 24, 25, 26, 27, 28, 29, 30, 31, \
402 \
403 253, \
404 \
405 258, 260, 259, \
406 \
407 32, 33, 34, 35, 36, 37, 38, 39, \
408 40, 41, 42, 43, 44, 45, 46, 47, \
409 48, 49, 50, 51, 52, 53, 54, 55, \
410 56, 57, 58, 59, 60, 61, 62, 63, \
411 64, 65, 66, 67, 68, 69, 70, 71, \
412 72, 73, 74, 75, 76, 77, 78, 79, \
413 80, 81, 82, 83, 84, 85, 86, 87, \
414 88, 89, 90, 91, 92, 93, 94, 95, \
415 96, 97, 98, 99, 100, 101, 102, 103, \
416 104, 105, 106, 107, 108, 109, 110, 111, \
417 112, 113, 114, 115, 116, 117, 118, 119, \
418 120, 121, 122, 123, 124, 125, 126, 127, \
419 128, 129, 130, 131, 132, 133, 134, 135, \
420 136, 137, 138, 139, 140, 141, 142, 143, \
421 144, 145, 146, 147, 148, 149, 150, 151, \
422 152, 153, 154, 155, 156, 157, 158, 159, \
423 160, 161, 162, 163, 164, 165, 166, 167, \
424 168, 169, 170, 171, 172, 173, 174, 175, \
425 176, 177, 178, 179, 180, 181, 182, 183, \
426 184, 185, 186, 187, 188, 189, 190, 191, \
427 192, 193, 194, 195, 196, 197, 198, 199, \
428 200, 201, 202, 203, 204, 205, 206, 207, \
429 208, 209, 210, 211, 212, 213, 214, 215, \
430 216, 217, 218, 219, 220, 221, 222, 223, \
431 224, 225, 226, 227, 228, 229, 230, \
432 \
433 254, 255, 256, 257, 261, 262 \
434 }
435
436 /* The default one. */
437 #define REG_ALLOC_ORDER MMIX_MMIXWARE_ABI_REG_ALLOC_ORDER
438
439 /* Node: Values in Registers */
440
441 #define HARD_REGNO_NREGS(REGNO, MODE) \
442 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
443 / UNITS_PER_WORD)
444
445 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
446
447 /* Note that no register can really be accessed in single-float mode, so
448 we *can* say 1 here. FIXME: Will TRT happen for single-float, or do
449 we have to punt to libgcc1.asm? */
450 #define MODES_TIEABLE_P(MODE1, MODE2) 1
451
452
453 /* Node: Leaf Functions */
454 /* (empty) */
455
456
457 /* Node: Register Classes */
458
459 enum reg_class
460 {
461 NO_REGS, GENERAL_REGS, REMAINDER_REG, HIMULT_REG,
462 SYSTEM_REGS, ALL_REGS, LIM_REG_CLASSES
463 };
464
465 #define N_REG_CLASSES (int) LIM_REG_CLASSES
466
467 #define REG_CLASS_NAMES \
468 {"NO_REGS", "GENERAL_REGS", "REMAINDER_REG", "HIMULT_REG", \
469 "SYSTEM_REGS", "ALL_REGS"}
470
471 /* Note that the contents of each item is always 32 bits. */
472 #define REG_CLASS_CONTENTS \
473 {{0, 0, 0, 0, 0, 0, 0, 0, 0}, \
474 {~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x20}, \
475 {0, 0, 0, 0, 0, 0, 0, 0, 0x10}, \
476 {0, 0, 0, 0, 0, 0, 0, 0, 4}, \
477 {0, 0, 0, 0, 0, 0, 0, 0, 0x7f}, \
478 {~0, ~0, ~0, ~0, ~0, ~0, ~0, ~0, 0x7f}}
479
480 #define REGNO_REG_CLASS(REGNO) \
481 ((REGNO) <= MMIX_LAST_GENERAL_REGISTER \
482 || (REGNO) == MMIX_ARG_POINTER_REGNUM \
483 ? GENERAL_REGS \
484 : (REGNO) == MMIX_REMAINDER_REGNUM ? REMAINDER_REG \
485 : (REGNO) == MMIX_HIMULT_REGNUM ? HIMULT_REG : SYSTEM_REGS)
486
487 #define BASE_REG_CLASS GENERAL_REGS
488
489 #define INDEX_REG_CLASS GENERAL_REGS
490
491 #define REG_CLASS_FROM_LETTER(CHAR) \
492 ((CHAR) == 'x' ? SYSTEM_REGS \
493 : (CHAR) == 'y' ? REMAINDER_REG \
494 : (CHAR) == 'z' ? HIMULT_REG : NO_REGS)
495
496 #define REGNO_OK_FOR_BASE_P(REGNO) \
497 ((REGNO) <= MMIX_LAST_GENERAL_REGISTER \
498 || (REGNO) == MMIX_ARG_POINTER_REGNUM \
499 || (reg_renumber[REGNO] > 0 \
500 && reg_renumber[REGNO] <= MMIX_LAST_GENERAL_REGISTER))
501
502 #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P (REGNO)
503
504 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
505 mmix_preferred_reload_class (X, CLASS)
506
507 #define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) \
508 mmix_preferred_output_reload_class (X, CLASS)
509
510 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
511 mmix_secondary_reload_class (CLASS, MODE, X, 1)
512
513 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
514 mmix_secondary_reload_class (CLASS, MODE, X, 0)
515
516 #define CLASS_MAX_NREGS(CLASS, MODE) HARD_REGNO_NREGS (CLASS, MODE)
517
518 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
519 mmix_const_ok_for_letter_p (VALUE, C)
520
521 #define EXTRA_CONSTRAINT(VALUE, C) \
522 mmix_extra_constraint (VALUE, C, MMIX_REG_OK_STRICT)
523
524 /* Do we need anything serious here? Yes, any FLOT constant. */
525 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
526 mmix_const_double_ok_for_letter_p (VALUE, C)
527
528
529 /* Node: Frame Layout */
530
531 #define STACK_GROWS_DOWNWARD
532 #define FRAME_GROWS_DOWNWARD 1
533
534 #define STARTING_FRAME_OFFSET \
535 mmix_starting_frame_offset ()
536
537 #define FIRST_PARM_OFFSET(FUNDECL) 0
538
539 #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) \
540 mmix_dynamic_chain_address (FRAMEADDR)
541
542 /* FIXME: It seems RETURN_ADDR_OFFSET is undocumented. */
543
544 #define SETUP_FRAME_ADDRESSES() \
545 mmix_setup_frame_addresses ()
546
547 #define RETURN_ADDR_RTX(COUNT, FRAME) \
548 mmix_return_addr_rtx (COUNT, FRAME)
549
550 /* It's in rJ before we store it somewhere. */
551 #define INCOMING_RETURN_ADDR_RTX \
552 gen_rtx_REG (Pmode, MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
553
554 /* FIXME: This does not seem properly documented or cross-indexed.
555 Nowhere except in the code does it say it *has* to be in the range
556 0..255, or else it will be truncated. That goes for the default too. */
557 #define DWARF_FRAME_RETURN_COLUMN \
558 DWARF_FRAME_REGNUM (MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
559
560 /* No return address is stored there. */
561 #define INCOMING_FRAME_SP_OFFSET 0
562
563 /* Node: Stack Checking */
564 /* (empty) */
565
566
567 /* Node: Exception Handling */
568
569 #define EH_RETURN_DATA_REGNO(N) \
570 mmix_eh_return_data_regno (N)
571
572 #define EH_RETURN_STACKADJ_RTX \
573 mmix_eh_return_stackadj_rtx ()
574
575 #define EH_RETURN_HANDLER_RTX \
576 mmix_eh_return_handler_rtx ()
577
578 #define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
579 mmix_asm_preferred_eh_data_format (CODE, GLOBAL)
580
581 /* Node: Frame Registers */
582 #define STACK_POINTER_REGNUM MMIX_STACK_POINTER_REGNUM
583
584 /* Perhaps we can use HARD_FRAME_POINTER_REGNUM and decide later on
585 what register we want to use. */
586 #define FRAME_POINTER_REGNUM MMIX_FRAME_POINTER_REGNUM
587 #define ARG_POINTER_REGNUM MMIX_ARG_POINTER_REGNUM
588
589 #define STATIC_CHAIN_REGNUM MMIX_STATIC_CHAIN_REGNUM
590
591
592 /* Node: Elimination */
593 /* FIXME: Is this requirement built-in? Anyway, we should try to get rid
594 of it; we can deduce the value. */
595 #define FRAME_POINTER_REQUIRED cfun->has_nonlocal_label
596
597 /* The frame-pointer is stored in a location that either counts to the
598 offset of incoming parameters, or that counts to the offset of the
599 frame, so we can't use a single offset. We therefore eliminate those
600 two separately. */
601 #define ELIMINABLE_REGS \
602 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
603 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
604 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
605
606 /* We need not worry about when the frame-pointer is required for other
607 reasons; GCC takes care of those cases. */
608 #define CAN_ELIMINATE(FROM, TO) 1
609
610 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
611 (OFFSET) = mmix_initial_elimination_offset (FROM, TO)
612
613
614 /* Node: Stack Arguments */
615
616 #define ACCUMULATE_OUTGOING_ARGS 1
617
618 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACKSIZE) 0
619
620
621 /* Node: Register Arguments */
622 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
623 mmix_function_arg (&(CUM), MODE, TYPE, NAMED, 0)
624
625 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
626 mmix_function_arg (&(CUM), MODE, TYPE, NAMED, 1)
627
628 typedef struct { int regs; int lib; } CUMULATIVE_ARGS;
629
630 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
631 ((CUM).regs = 0, (CUM).lib = ((LIBNAME) != 0))
632
633 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
634 ((CUM).regs \
635 = ((targetm.calls.must_pass_in_stack (MODE, TYPE)) \
636 || (MMIX_FUNCTION_ARG_SIZE (MODE, TYPE) > 8 \
637 && !TARGET_LIBFUNC && !(CUM).lib)) \
638 ? (MMIX_MAX_ARGS_IN_REGS) + 1 \
639 : (CUM).regs + (7 + (MMIX_FUNCTION_ARG_SIZE (MODE, TYPE))) / 8)
640
641 #define FUNCTION_ARG_REGNO_P(REGNO) \
642 mmix_function_arg_regno_p (REGNO, 0)
643
644
645 /* Node: Register Arguments */
646
647 #define FUNCTION_VALUE(VALTYPE, FUNC) \
648 gen_rtx_REG (TYPE_MODE (VALTYPE), MMIX_RETURN_VALUE_REGNUM)
649
650 /* This needs to take care of the register hole for complex return values. */
651 #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \
652 mmix_function_outgoing_value (VALTYPE, FUNC)
653
654 #define LIBCALL_VALUE(MODE) \
655 gen_rtx_REG (MODE, MMIX_RETURN_VALUE_REGNUM)
656
657 #define FUNCTION_VALUE_REGNO_P(REGNO) \
658 mmix_function_value_regno_p (REGNO)
659
660
661 /* Node: Caller Saves */
662 /* (empty) */
663
664
665 /* Node: Function Entry */
666
667 /* See mmix.c for TARGET_ASM_FUNCTION_PROLOGUE and
668 TARGET_ASM_FUNCTION_EPILOGUE. */
669
670 /* We need to say that the epilogue uses the return address, so the
671 initial-value machinery restores it. FIXME: Some targets
672 conditionalize on "reload_completed &&". Investigate difference.
673 FIXME: Not needed if nonlocal_goto_stack_level. */
674 #define EPILOGUE_USES(REGNO) \
675 ((REGNO) == MMIX_INCOMING_RETURN_ADDRESS_REGNUM)
676
677 /* Node: Profiling */
678 #define FUNCTION_PROFILER(FILE, LABELNO) \
679 mmix_function_profiler (FILE, LABELNO)
680
681 /* Node: Trampolines */
682
683 #define TRAMPOLINE_TEMPLATE(FILE) \
684 mmix_trampoline_template (FILE)
685
686 #define TRAMPOLINE_SIZE mmix_trampoline_size
687 #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
688 mmix_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
689
690
691 /* Node: Addressing Modes */
692
693 #define CONSTANT_ADDRESS_P(X) \
694 mmix_constant_address_p (X)
695
696 #define MAX_REGS_PER_ADDRESS 2
697
698 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
699 if (mmix_legitimate_address (MODE, X, MMIX_REG_OK_STRICT)) \
700 goto LABEL
701
702 #ifndef REG_OK_STRICT
703 # define REG_OK_FOR_BASE_P(X) \
704 (REGNO (X) <= MMIX_LAST_GENERAL_REGISTER \
705 || REGNO (X) == MMIX_ARG_POINTER_REGNUM \
706 || REGNO (X) >= FIRST_PSEUDO_REGISTER)
707 #else
708 # define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
709 #endif /* REG_OK_STRICT */
710
711 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
712
713 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
714
715 #define LEGITIMATE_CONSTANT_P(X) \
716 mmix_legitimate_constant_p (X)
717
718
719 /* Node: Condition Code */
720
721 #define SELECT_CC_MODE(OP, X, Y) \
722 mmix_select_cc_mode (OP, X, Y)
723
724 /* A definition of CANONICALIZE_COMPARISON that changed LE and GT
725 comparisons with -1 to LT and GE respectively, and LT, LTU, GE or GEU
726 comparisons with 256 to 255 and LE, LEU, GT and GTU has been
727 ineffective; the code path for performing the changes did not trig for
728 neither the GCC testsuite nor ghostscript-6.52 nor Knuth's mmix.tar.gz
729 itself (core GCC functionality supposedly handling it) with sources
730 from 2002-06-06. */
731
732 #define REVERSIBLE_CC_MODE(MODE) \
733 mmix_reversible_cc_mode (MODE)
734
735
736 /* Node: Costs */
737
738 /* The special registers can only move to and from general regs, and we
739 need to check that their constraints match, so say 3 for them. */
740 /* WARNING: gcc-2.7.2.2 i686-pc-linux-gnulibc1 (as shipped with RH 4.2)
741 miscompiles reload1.c:reload_cse_simplify_set; a call to
742 reload_cse_regno_equal_p is missing when checking if a substitution of
743 a register setting is valid if this is defined to just the expression
744 in mmix_register_move_cost.
745
746 Symptom: a (all?) register setting is optimized away for e.g.
747 "char *p1(char *p) { return p+1; }" and the value of register zero ($0)
748 is returned.
749
750 We can workaround by making this a function call - unknown if this
751 causes dire speed effects. */
752 #define REGISTER_MOVE_COST(MODE, FROM, TO) \
753 mmix_register_move_cost (MODE, FROM, TO)
754
755 #define SLOW_BYTE_ACCESS 0
756
757
758 /* Node: Sections */
759
760 /* This must be a constant string, since it's used in crtstuff.c. */
761 #define TEXT_SECTION_ASM_OP \
762 "\t.text ! mmixal:= 9H LOC 8B"
763
764 /* FIXME: Not documented. */
765 #define DATA_SECTION_ASM_OP \
766 mmix_data_section_asm_op ()
767
768 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata"
769
770 /* Node: PIC */
771 /* (empty) */
772
773
774 /* Node: File Framework */
775
776 /* While any other punctuation character but ";" would do, we prefer "%"
777 or "!"; "!" is an unary operator and so will not be mistakenly included
778 in correctly formed expressions. The hash character adds mass; catches
779 the eye. We can't have it as a comment char by itself, since it's a
780 hex-number prefix. */
781 #define ASM_COMMENT_START "!#"
782
783 /* These aren't currently functional. We just keep them as markers. */
784 #define ASM_APP_ON "%APP\n"
785 #define ASM_APP_OFF "%NO_APP\n"
786
787 #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \
788 mmix_asm_output_source_filename (STREAM, NAME)
789
790 #define OUTPUT_QUOTED_STRING(STREAM, STRING) \
791 mmix_output_quoted_string (STREAM, STRING, strlen (STRING))
792
793 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
794
795 /* Node: Data Output */
796
797 #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) \
798 mmix_asm_output_ascii (STREAM, PTR, LEN)
799
800 /* Node: Uninitialized Data */
801
802 #define ASM_OUTPUT_ALIGNED_COMMON(ST, N, S, A) \
803 mmix_asm_output_aligned_common (ST, N, S, A)
804
805 #define ASM_OUTPUT_ALIGNED_LOCAL(ST, N, S, A) \
806 mmix_asm_output_aligned_local (ST, N, S, A)
807
808
809 /* Node: Label Output */
810
811 #define ASM_OUTPUT_LABEL(STREAM, NAME) \
812 mmix_asm_output_label (STREAM, NAME)
813
814 #define ASM_OUTPUT_INTERNAL_LABEL(STREAM, NAME) \
815 mmix_asm_output_internal_label (STREAM, NAME)
816
817 #define ASM_DECLARE_REGISTER_GLOBAL(STREAM, DECL, REGNO, NAME) \
818 mmix_asm_declare_register_global (STREAM, DECL, REGNO, NAME)
819
820 #define GLOBAL_ASM_OP "\t.global "
821
822 #define ASM_WEAKEN_LABEL(STREAM, NAME) \
823 mmix_asm_weaken_label (STREAM, NAME)
824
825 #define MAKE_DECL_ONE_ONLY(DECL) \
826 mmix_make_decl_one_only (DECL)
827
828 #define ASM_OUTPUT_LABELREF(STREAM, NAME) \
829 mmix_asm_output_labelref (STREAM, NAME)
830
831 /* We insert a ":" to disambiguate against user symbols like L5. */
832 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
833 sprintf (LABEL, "*%s:%ld", PREFIX, (long)(NUM))
834
835 /* Insert "::"; these are rarer than internal labels. FIXME: Make sure no
836 ":" is seen in the object file; we don't really want that mmixal
837 feature visible there. We don't want the default, which uses a dot;
838 that'd be incompatible with mmixal. */
839 #define ASM_PN_FORMAT "%s::%lu"
840
841 #define ASM_OUTPUT_DEF(STREAM, NAME, VALUE) \
842 mmix_asm_output_def (STREAM, NAME, VALUE)
843
844 /* Node: Macros for Initialization */
845 /* We're compiling to ELF and linking to MMO; fundamental ELF features
846 that GCC depend on are there. */
847
848 /* These must be constant strings, since they're used in crtstuff.c. */
849 #define INIT_SECTION_ASM_OP "\t.section .init,\"ax\" ! mmixal-incompatible"
850
851 #define FINI_SECTION_ASM_OP "\t.section .fini,\"ax\" ! mmixal-incompatible"
852
853 #define OBJECT_FORMAT_ELF
854
855
856 /* Node: Instruction Output */
857
858 /* The non-$ register names must be prefixed with ":", since they're
859 affected by PREFIX. We provide the non-colon names as additional
860 names. */
861 #define REGISTER_NAMES \
862 {"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", \
863 "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", \
864 "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", \
865 "$24", "$25", "$26", "$27", "$28", "$29", "$30", "$31", \
866 "$32", "$33", "$34", "$35", "$36", "$37", "$38", "$39", \
867 "$40", "$41", "$42", "$43", "$44", "$45", "$46", "$47", \
868 "$48", "$49", "$50", "$51", "$52", "$53", "$54", "$55", \
869 "$56", "$57", "$58", "$59", "$60", "$61", "$62", "$63", \
870 "$64", "$65", "$66", "$67", "$68", "$69", "$70", "$71", \
871 "$72", "$73", "$74", "$75", "$76", "$77", "$78", "$79", \
872 "$80", "$81", "$82", "$83", "$84", "$85", "$86", "$87", \
873 "$88", "$89", "$90", "$91", "$92", "$93", "$94", "$95", \
874 "$96", "$97", "$98", "$99", "$100", "$101", "$102", "$103", \
875 "$104", "$105", "$106", "$107", "$108", "$109", "$110", "$111", \
876 "$112", "$113", "$114", "$115", "$116", "$117", "$118", "$119", \
877 "$120", "$121", "$122", "$123", "$124", "$125", "$126", "$127", \
878 "$128", "$129", "$130", "$131", "$132", "$133", "$134", "$135", \
879 "$136", "$137", "$138", "$139", "$140", "$141", "$142", "$143", \
880 "$144", "$145", "$146", "$147", "$148", "$149", "$150", "$151", \
881 "$152", "$153", "$154", "$155", "$156", "$157", "$158", "$159", \
882 "$160", "$161", "$162", "$163", "$164", "$165", "$166", "$167", \
883 "$168", "$169", "$170", "$171", "$172", "$173", "$174", "$175", \
884 "$176", "$177", "$178", "$179", "$180", "$181", "$182", "$183", \
885 "$184", "$185", "$186", "$187", "$188", "$189", "$190", "$191", \
886 "$192", "$193", "$194", "$195", "$196", "$197", "$198", "$199", \
887 "$200", "$201", "$202", "$203", "$204", "$205", "$206", "$207", \
888 "$208", "$209", "$210", "$211", "$212", "$213", "$214", "$215", \
889 "$216", "$217", "$218", "$219", "$220", "$221", "$222", "$223", \
890 "$224", "$225", "$226", "$227", "$228", "$229", "$230", "$231", \
891 "$232", "$233", "$234", "$235", "$236", "$237", "$238", "$239", \
892 "$240", "$241", "$242", "$243", "$244", "$245", "$246", "$247", \
893 "$248", "$249", "$250", "$251", "$252", "$253", "$254", "$255", \
894 ":rD", ":rE", ":rH", ":rJ", ":rR", "ap_!BAD!", ":rO"}
895
896 #define ADDITIONAL_REGISTER_NAMES \
897 {{"sp", 254}, {":sp", 254}, {"rD", 256}, {"rE", 257}, \
898 {"rH", 258}, {"rJ", MMIX_rJ_REGNUM}, {"rO", MMIX_rO_REGNUM}}
899
900 #define PRINT_OPERAND(STREAM, X, CODE) \
901 mmix_print_operand (STREAM, X, CODE)
902
903 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
904 mmix_print_operand_punct_valid_p (CODE)
905
906 #define PRINT_OPERAND_ADDRESS(STREAM, X) \
907 mmix_print_operand_address (STREAM, X)
908
909 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
910 mmix_asm_output_reg_push (STREAM, REGNO)
911
912 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
913 mmix_asm_output_reg_pop (STREAM, REGNO)
914
915
916 /* Node: Dispatch Tables */
917
918 /* We define both types, since SImode is the better, but DImode the only
919 possible for mmixal so that's the one actually used. */
920 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
921 mmix_asm_output_addr_diff_elt (STREAM, BODY, VALUE, REL)
922
923 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
924 mmix_asm_output_addr_vec_elt (STREAM, VALUE)
925
926
927 /* Node: Exception Region Output */
928 /* (empty) */
929
930 /* Node: Alignment Output */
931
932 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
933 mmix_asm_output_skip (STREAM, NBYTES)
934
935 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
936 mmix_asm_output_align (STREAM, POWER)
937
938
939 /* Node: All Debuggers */
940
941 #define DBX_REGISTER_NUMBER(REGNO) \
942 mmix_dbx_register_number (REGNO)
943
944
945 /* Node: DBX Options */
946 /* (empty) */
947 /* Node: DBX Hooks */
948 /* (empty) */
949 /* Node: File Names and DBX */
950 /* (empty) */
951
952
953 /* Node: SDB and DWARF */
954 #define DWARF2_DEBUGGING_INFO 1
955 #define DWARF2_ASM_LINE_DEBUG_INFO 1
956
957 /* Node: Misc */
958
959 /* There's no way to get a PC-relative offset into tables for SImode, so
960 for the moment we have absolute entries in DImode.
961 When we're going ELF, these should be SImode and 1. */
962 #define CASE_VECTOR_MODE DImode
963 #define CASE_VECTOR_PC_RELATIVE 0
964
965 #define WORD_REGISTER_OPERATIONS
966
967 /* We have a choice, which makes this yet another parameter to tweak. The
968 gut feeling is currently that SIGN_EXTEND wins; "int" is more frequent
969 than "unsigned int", and we have signed characters. FIXME: measure. */
970 #define LOAD_EXTEND_OP(MODE) (TARGET_ZERO_EXTEND ? ZERO_EXTEND : SIGN_EXTEND)
971
972 #define MOVE_MAX 8
973
974 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
975
976 /* ??? MMIX allows a choice of STORE_FLAG_VALUE. Revisit later,
977 we don't have scc expanders yet. */
978
979 #define Pmode DImode
980
981 #define FUNCTION_MODE QImode
982
983 #define NO_IMPLICIT_EXTERN_C
984
985 #define HANDLE_SYSV_PRAGMA 1
986
987 /* These are checked. */
988 #define DOLLARS_IN_IDENTIFIERS 0
989 #define NO_DOLLAR_IN_LABEL
990 #define NO_DOT_IN_LABEL
991
992 #endif /* GCC_MMIX_H */
993 /*
994 * Local variables:
995 * eval: (c-set-style "gnu")
996 * indent-tabs-mode: t
997 * End:
998 */