1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
|
/* Definitions of target machine for GNU compiler;
Charles River Data Systems UNiverse/32.
Copyright (C) 1987, 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
Contributed by Gary E. Miller (Gary_Edmunds_Miller@cup.portal.com)
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#define MOTOROLA /* Use Motorola syntax rather than "MIT" */
#define SGS /* Uses SGS assembler */
#define SGS_SWITCH_TABLES /* Different switch table handling */
#define SGS_NO_LI /* Suppress jump table label usage */
#define CRDS /* Charles River Data Systems assembler */
#include "m68k/m68k.h"
/* Without STRUCTURE_SIZE_BOUNDARY, we can't ensure that structures are
aligned such that we can correctly extract bitfields from them.
Someone should check whether the usual compiler on the crds machine
provides the equivalent behavior of STRUCTURE_SIZE_BOUNDARY. */
/* Set to 16 because all other m68k targets have it so */
#define STRUCTURE_SIZE_BOUNDARY 16
/* See m68k.h. 0 means 680[01]0 with no 68881. */
#undef TARGET_DEFAULT
#define TARGET_DEFAULT 0
/* Don't try using XFmode. */
#undef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64
/* special flags to the unos assembler. */
#undef ASM_SPEC
#define ASM_SPEC "-g"
#undef LIB_SPEC
#define LIB_SPEC "%{!p:%{!pg:-lunos}}%{p:-lc_p}%{pg:-lc_p}"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{pg:gcrt0.o%s}%{!pg:%{p:mc68rt0.o%s}%{!p:c68rt0.o%s}}"
/* CC1 spec */
#if 0
/* c.sac only used in _s_call_r() in libunos.a and malloc() in libmalloc.a */
/* so we do not need to bother ! */
#define CC1_SPEC "-fpcc-struct-return"
#endif
/* -O2 for MAX optimization */
#undef CC1_SPEC
#define CC1_SPEC "%{O2:-fstrength-reduce}"
/* cpp has to support a #sccs directive for the /usr/include files */
#define SCCS_DIRECTIVE
/* Make output for SDB. */
/* #define SDB_DEBUGGING_INFO UNOS casm has no debugging :-( */
/* UNOS need stack probe :-( */
#if 0
#define HAVE_probe 1
#define gen_probe() gen_rtx(ASM_INPUT, VOIDmode, "tstb -2048(sp)\t;probe\n")
#else
#undef NEED_PROBE
#define NEED_PROBE (-2048)
#endif
/* use memcpy, memset instead of bcopy, etc. */
#define TARGET_MEM_FUNCTIONS
/* Don't try to define `gcc_compiled.' since the assembler might not
accept symbols with periods and GDB doesn't run on this machine anyway. */
#define ASM_IDENTIFY_GCC(FILE)
/* Define __HAVE_68881__ in preprocessor if -m68881 is specified.
This will control the use of inline 68881 insns in certain macros. */
#undef CPP_SPEC
#define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
/* Names to predefine in the preprocessor for this target machine. */
#undef CPP_PREDEFINES
#define CPP_PREDEFINES "-Dmc68k -DM68000 -Dmc68000 -Dunos -Dunix -D__motorola__ -Asystem(unix) -Acpu(m68k) -Amachine(m68k)"
/* Register in which address to store a structure value
is passed to a function. */
/* unos uses ".comm c.sac" returns &c.sac in d0 */
/* make pointer to c.sac ?
#undef STRUCT_VALUE_REGNUM
#define STRUCT_VALUE gen_rtx(MEM, Pmode, gen_rtx( , , ) )
*/
#define BSS_SECTION_ASM_OP ".bss"
/* Specify how to pad function arguments.
Value should be `upward', `downward' or `none'.
Same as the default, except no padding for large or variable-size args. */
#define FUNCTION_ARG_PADDING(MODE, TYPE) \
(((MODE) == BLKmode \
? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
&& int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
: GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
? downward : none)
/* Override parts of m68k.h to fit the CRuDS assembler. */
#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (68k, CRDS/UNOS)");
/* Specify extra dir to search for include files. */
#define SYSTEM_INCLUDE_DIR "/include"
/* Control the assembler format that we output. */
/* Output at beginning of assembler file. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
fprintf (FILE, ";#NO_APP\n");
/* Output to assembler file text saying following lines
may contain character constants, extra white space, comments, etc. */
#undef ASM_APP_ON
#define ASM_APP_ON ";#APP\n"
/* Output to assembler file text saying following lines
no longer contain unusual constructs. */
#undef ASM_APP_OFF
#define ASM_APP_OFF ";#NO_APP\n"
/* The prefix for immediate operands. */
#undef IMMEDIATE_PREFIX
#define IMMEDIATE_PREFIX "$"
/* This is how to output an assembler line defining a `double' constant. */
#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
do { long l[2]; \
REAL_VALUE_TO_TARGET_DOUBLE (VALUE, l); \
fprintf (FILE, "\t.long 0x%x, 0x%x\n", l[0], l[1]); \
} while (0)
/*unos has no .skip :-( */
#undef ASM_OUTPUT_SKIP
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
fprintf (FILE, "\t. = . + %u\n", (SIZE));
/* This says how to output an assembler line
to define a local common symbol. */
/* should use bss_section instead of data_section but this makes casm die ? */
#undef ASM_OUTPUT_LOCAL
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
{ data_section (); \
if ((SIZE) > 1) fprintf (FILE, "\t.even\n"); \
assemble_name ((FILE), (NAME)); \
fprintf ((FILE), ":\t. = . + %u\n", (ROUNDED));}
/* This is how to output an insn to push a register on the stack.
It need not be very fast code. */
#undef ASM_OUTPUT_REG_PUSH
#define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \
fprintf (FILE, "\tmovel %s,-(sp)\n", reg_names[REGNO])
/* This is how to output an insn to pop a register from the stack.
It need not be very fast code. */
#undef ASM_OUTPUT_REG_POP
#define ASM_OUTPUT_REG_POP(FILE,REGNO) \
fprintf (FILE, "\tmovel (sp)+,%s\n", reg_names[REGNO])
#undef ASM_OUTPUT_ASCII
#define ASM_OUTPUT_ASCII(FILE, P , SIZE) \
do { int i; \
fprintf ((FILE), "\t.ascii \""); \
for (i = 0; i < (SIZE); i++) \
{ \
register int c = (P)[i]; \
if (i != 0 && (i / 200) * 200 == i) \
fprintf ((FILE), "\"\n\t.ascii \""); \
if (c >= ' ' && c < 0177) { \
if (c != '\"' && c != '\\') { \
putc (c, (FILE)); \
continue; \
} \
} \
/* brain dead asm doesn't understand char escapes */ \
fprintf ((FILE), "\"\n\t.byte\t%d\n\t.ascii \"", c); \
} \
fprintf ((FILE), "\"\n"); \
} while (0)
/* Change all JBxx to Bxx. Also change all DBRA to DBF.
Also change divs.l, etc., to divs, etc. But don't change divsl.l. */
#define ASM_OUTPUT_OPCODE(FILE, PTR) \
{ if ((PTR)[0] == 'j' && (PTR)[1] == 'b') \
{ ++(PTR); } \
else if ((PTR)[0] == 'd') \
{ \
if (!strncmp ((PTR), "dbra", 4)) \
{ fprintf ((FILE), "dbf"); (PTR) += 4; } \
else if (!strncmp ((PTR), "div", 3) && (PTR)[5] == ' ') \
{ fprintf ((FILE), "div%c", (PTR)[3]); (PTR) += 6; } \
} \
}
#if 0
/* Print operand X (an rtx) in assembler syntax to file FILE.
CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
For `%' followed by punctuation, CODE is the punctuation and X is null.
On the 68000, we use several CODE characters:
'.' for dot needed in Motorola-style opcode names.
'-' for an operand pushing on the stack:
sp@-, -(sp) or -(%sp) depending on the style of syntax.
'+' for an operand pushing on the stack:
sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
'@' for a reference to the top word on the stack:
sp@, (sp) or (%sp) depending on the style of syntax.
'#' for an immediate operand prefix (# in MIT and Motorola syntax
but & in SGS syntax, $ in unos syntax).
'!' for the fpcr register (used in some float-to-fixed conversions).
'b' for byte insn (no effect, on the Sun; this is for the ISI).
'd' to force memory addressing to be absolute, not relative.
'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
'w' for FPA insn (print a CONST_DOUBLE as a SunFPA constant rather
than directly). Second part of 'y' below.
'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
or print pair of registers as rx:ry.
'y' for a FPA insn (print pair of registers as rx:ry). This also outputs
CONST_DOUBLE's as SunFPA constant RAM registers if
possible, so it should not be used except for the SunFPA. */
#undef PRINT_OPERAND_PUNCT_VALID_P
#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
((CODE) == '.' || (CODE) == '#' || (CODE) == '-' \
|| (CODE) == '+' || (CODE) == '@' || (CODE) == '!')
#undef PRINT_OPERAND
#define PRINT_OPERAND(FILE, X, CODE) \
{ int i; \
if (CODE == '.') ; \
else if (CODE == '#') fprintf (FILE, "$"); \
else if (CODE == '-') fprintf (FILE, "-(sp)"); \
else if (CODE == '+') fprintf (FILE, "(sp)+"); \
else if (CODE == '@') fprintf (FILE, "(sp)"); \
else if (CODE == '!') fprintf (FILE, "fpcr"); \
else if (CODE == '/') \
; \
else if (GET_CODE (X) == REG) \
{ if (REGNO (X) < 16 && (CODE == 'y' || CODE == 'x') && GET_MODE (X) == DFmode) \
fprintf (FILE, "%s:%s", reg_names[REGNO (X)], reg_names[REGNO (X)+1]); \
else \
fprintf (FILE, "%s", reg_names[REGNO (X)]); \
} \
else if (GET_CODE (X) == MEM) \
{ \
output_address (XEXP (X, 0)); \
if (CODE == 'd' && ! TARGET_68020 \
&& CONSTANT_ADDRESS_P (XEXP (X, 0))) \
/* fprintf (FILE, ".l") */; \
} \
else if ((CODE == 'y' || CODE == 'w') \
&& GET_CODE(X) == CONST_DOUBLE \
&& (i = standard_sun_fpa_constant_p (X))) \
fprintf (FILE, "%%%d", i & 0x1ff); \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode) \
{ REAL_VALUE_TYPE r; long l; \
REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
if (CODE == 'f') \
ASM_OUTPUT_FLOAT_OPERAND (CODE, FILE, r); \
else \
{ REAL_VALUE_TO_TARGET_SINGLE (r, l); \
fprintf (FILE, "$0x%x", l); } } \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == DFmode) \
{ REAL_VALUE_TYPE r; \
REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
ASM_OUTPUT_DOUBLE_OPERAND (FILE, r); } \
else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == XFmode) \
{ REAL_VALUE_TYPE r; \
REAL_VALUE_FROM_CONST_DOUBLE (r, X); \
ASM_OUTPUT_LONG_DOUBLE_OPERAND (FILE, r); } \
else { putc ('$', FILE); output_addr_const (FILE, X); }}
#endif
/* Note that this contains a kludge that knows that the only reason
we have an address (plus (label_ref...) (reg...))
is in the insn before a tablejump, and we know that m68k.md
generates a label LInnn: on such an insn. */
#undef PRINT_OPERAND_ADDRESS
#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
{ register rtx reg1, reg2, breg, ireg; \
register rtx addr = ADDR; \
rtx offset; \
switch (GET_CODE (addr)) \
{ \
case REG: \
fprintf (FILE, "(%s)", reg_names[REGNO (addr)]); \
break; \
case PRE_DEC: \
fprintf (FILE, "-(%s)", reg_names[REGNO (XEXP (addr, 0))]); \
break; \
case POST_INC: \
fprintf (FILE, "(%s)+", reg_names[REGNO (XEXP (addr, 0))]); \
break; \
case PLUS: \
reg1 = 0; reg2 = 0; \
ireg = 0; breg = 0; \
offset = 0; \
if (CONSTANT_ADDRESS_P (XEXP (addr, 0))) \
{ \
offset = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))) \
{ \
offset = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
if (GET_CODE (addr) != PLUS) ; \
else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
else if (GET_CODE (XEXP (addr, 0)) == MULT) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == MULT) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
else if (GET_CODE (XEXP (addr, 0)) == REG) \
{ \
reg1 = XEXP (addr, 0); \
addr = XEXP (addr, 1); \
} \
else if (GET_CODE (XEXP (addr, 1)) == REG) \
{ \
reg1 = XEXP (addr, 1); \
addr = XEXP (addr, 0); \
} \
if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT \
|| GET_CODE (addr) == SIGN_EXTEND) \
{ if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; } \
if (offset != 0) { if (addr != 0) abort (); addr = offset; } \
if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND \
|| GET_CODE (reg1) == MULT)) \
|| (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2)))) \
{ breg = reg2; ireg = reg1; } \
else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1))) \
{ breg = reg1; ireg = reg2; } \
if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF) \
{ int scale = 1; \
if (GET_CODE (ireg) == MULT) \
{ scale = INTVAL (XEXP (ireg, 1)); \
ireg = XEXP (ireg, 0); } \
if (GET_CODE (ireg) == SIGN_EXTEND) \
fprintf (FILE, "L%d-LI%d-2(pc,%s.w", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (XEXP (ireg, 0))]); \
else \
fprintf (FILE, "L%d-LI%d-2(pc,%s.l", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (ireg)]); \
if (scale != 1) fprintf (FILE, ":%d", scale); \
putc (')', FILE); \
break; } \
if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF) \
{ fprintf (FILE, "L%d-LI%d-2(pc,%s.l", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (breg)]); \
putc (')', FILE); \
break; } \
if (ireg != 0 || breg != 0) \
{ int scale = 1; \
if (breg == 0) \
abort (); \
if (addr && GET_CODE (addr) == LABEL_REF) abort (); \
if (addr != 0) \
output_addr_const (FILE, addr); \
fprintf (FILE, "(%s", reg_names[REGNO (breg)]); \
if (breg != 0 && ireg != 0) \
putc (',', FILE); \
if (ireg != 0 && GET_CODE (ireg) == MULT) \
{ scale = INTVAL (XEXP (ireg, 1)); \
ireg = XEXP (ireg, 0); } \
if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND) \
fprintf (FILE, "%s.w", reg_names[REGNO (XEXP (ireg, 0))]); \
else if (ireg != 0) \
fprintf (FILE, "%s.l", reg_names[REGNO (ireg)]); \
if (scale != 1) fprintf (FILE, ":%d", scale); \
putc (')', FILE); \
break; \
} \
else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF) \
{ fprintf (FILE, "L%d-LI%d-2(pc,%s.l)", \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
CODE_LABEL_NUMBER (XEXP (addr, 0)), \
reg_names[REGNO (reg1)]); \
break; } \
default: \
if (GET_CODE (addr) == CONST_INT \
&& INTVAL (addr) < 0x8000 \
&& INTVAL (addr) >= -0x8000) \
fprintf (FILE, "%d", INTVAL (addr)); \
else \
output_addr_const (FILE, addr); \
}}
#define ASM_OUTPUT_SOURCE_FILENAME(FILE, FILENAME) \
do { fprintf (FILE, "\t; file\t"); \
output_quoted_string (FILE, FILENAME); \
fprintf (FILE, "\n"); \
} while (0)
#define ASM_OUTPUT_SOURCE_LINE(FILE, LINENO) \
fprintf (FILE, "\t; ln\t%d\n", \
(sdb_begin_function_line \
? last_linenum - sdb_begin_function_line : 1))
/* This macro generates the assembly code for function entry.
FILE is a stdio stream to output the code to.
SIZE is an int: how many units of temporary storage to allocate.
Refer to the array `regs_ever_live' to determine which registers
to save; `regs_ever_live[I]' is nonzero if register number I
is ever used in the function. This macro is responsible for
knowing which registers should not be saved even if used. */
/* Note that the order of the bit mask for fmovem is the opposite
of the order for movem! */
#undef FUNCTION_PROLOGUE
#define FUNCTION_PROLOGUE(FILE, SIZE) \
{ register int regno; \
register int mask = 0; \
extern char call_used_regs[]; \
int fsize = ((SIZE) + 3) & -4; \
/* unos stack probe */ \
if ( fsize > 30000 ) { \
fprintf (FILE, "\tmovel sp,a0\n"); \
fprintf (FILE, "\taddl $-%d,a0\n", 2048 + fsize); \
fprintf (FILE, "\ttstb (a0)\n"); \
} else { \
fprintf (FILE, "\ttstb -%d(sp)\n", 2048 + fsize); \
} \
if (frame_pointer_needed) \
{ if (TARGET_68020 || fsize < 0x8000) \
fprintf (FILE, "\tlink a6,$%d\n", -fsize); \
else \
fprintf (FILE, "\tlink a6,$0\n\tsubl $%d,sp\n", fsize); } \
else if (fsize) \
{ \
/* Adding negative number is faster on the 68040. */ \
if (fsize + 4 < 0x8000) \
{ \
fprintf (FILE, "\tadd.w #%d,sp\n", - (fsize + 4)); \
} \
else \
{ \
fprintf (FILE, "\tadd.l #%d,sp\n", - (fsize + 4)); \
} \
} \
for (regno = 16; regno < 24; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
mask |= 1 << (regno - 16); \
if ((mask & 0xff) != 0) \
fprintf (FILE, "\tfmovem $0x%x,-(sp)\n", mask & 0xff); \
mask = 0; \
for (regno = 0; regno < 16; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
mask |= 1 << (15 - regno); \
if (frame_pointer_needed) \
mask &= ~ (1 << (15-FRAME_POINTER_REGNUM)); \
if (exact_log2 (mask) >= 0) \
fprintf (FILE, "\tmovel %s,-(sp)\n", reg_names[15 - exact_log2 (mask)]); \
else if (mask) fprintf (FILE, "\tmovem $0x%x,-(sp)\n", mask); }
/* Must put address in %a0 , not %d0 . -- LGM, 7/15/88 */
/* UNOS ?? */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABEL_NO) \
fprintf (FILE, "\tmovl &LP%%%d,%%a0\n\tjsr mcount\n", (LABEL_NO))
/* This macro generates the assembly code for function exit,
on machines that need it. If FUNCTION_EPILOGUE is not defined
then individual return instructions are generated for each
return statement. Args are same as for FUNCTION_PROLOGUE.
The function epilogue should not depend on the current stack pointer!
It should use the frame pointer only. This is mandatory because
of alloca; we also take advantage of it to omit stack adjustments
before returning. */
#undef FUNCTION_EPILOGUE
#define FUNCTION_EPILOGUE(FILE, SIZE) \
{ register int regno; \
register int mask, fmask; \
register int nregs; \
int offset, foffset, fpoffset; \
extern char call_used_regs[]; \
int fsize = ((SIZE) + 3) & -4; \
int big = 0; \
nregs = 0; fmask = 0; fpoffset = 0; \
for (regno = 16; regno < 24; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
{ nregs++; fmask |= 1 << (23 - regno); } \
foffset = fpoffset + nregs * 12; \
nregs = 0; mask = 0; \
if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
for (regno = 0; regno < 16; regno++) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) \
{ nregs++; mask |= 1 << regno; } \
offset = foffset + nregs * 4; \
if (offset + fsize >= 0x8000 \
&& frame_pointer_needed \
&& (mask || fmask || fpoffset)) \
{ fprintf (FILE, "\tmovel $%d,a0\n", -fsize); \
fsize = 0, big = 1; } \
if (exact_log2 (mask) >= 0) { \
if (big) \
fprintf (FILE, "\tmovel -%d(a6,a0.l),%s\n", \
offset + fsize, reg_names[exact_log2 (mask)]); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tmovel (sp)+,%s\n", \
reg_names[exact_log2 (mask)]); \
else \
fprintf (FILE, "\tmovel -%d(a6),%s\n", \
offset + fsize, reg_names[exact_log2 (mask)]); } \
else if (mask) { \
if (big) \
fprintf (FILE, "\tmovem -%d(a6,a0.l),$0x%x\n", \
offset + fsize, mask); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tmovem (sp)+,$0x%x\n", mask); \
else \
fprintf (FILE, "\tmovem -%d(a6),$0x%x\n", \
offset + fsize, mask); } \
if (fmask) { \
if (big) \
fprintf (FILE, "\tfmovem -%d(a6,a0.l),$0x%x\n", \
foffset + fsize, fmask); \
else if (! frame_pointer_needed) \
fprintf (FILE, "\tfmovem (sp)+,$0x%x\n", fmask); \
else \
fprintf (FILE, "\tfmovem -%d(a6),$0x%x\n", \
foffset + fsize, fmask); } \
if (fpoffset != 0) \
for (regno = 55; regno >= 24; regno--) \
if (regs_ever_live[regno] && ! call_used_regs[regno]) { \
if (big) \
fprintf(FILE, "\tfpmoved -%d(a6,a0.l), %s\n", \
fpoffset + fsize, reg_names[regno]); \
else if (! frame_pointer_needed) \
fprintf(FILE, "\tfpmoved (sp)+, %s\n", \
reg_names[regno]); \
else \
fprintf(FILE, "\tfpmoved -%d(a6), %s\n", \
fpoffset + fsize, reg_names[regno]); \
fpoffset -= 8; \
} \
if (frame_pointer_needed) \
fprintf (FILE, "\tunlk a6\n"); \
else if (fsize) \
{ \
if (fsize + 4 < 0x8000) \
{ \
fprintf (FILE, "\tadd.w #%d,sp\n", fsize + 4); \
} \
else \
{ \
fprintf (FILE, "\tadd.l #%d,sp\n", fsize + 4); \
} \
} \
if (current_function_pops_args) \
fprintf (FILE, "\trtd $%d\n", current_function_pops_args); \
else fprintf (FILE, "\trts\n"); }
|
