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1 709 jeremybenn
/* Target Definitions for R8C/M16C/M32C
2
   Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
3
   Free Software Foundation, Inc.
4
   Contributed by Red Hat.
5
 
6
   This file is part of GCC.
7
 
8
   GCC is free software; you can redistribute it and/or modify it
9
   under the terms of the GNU General Public License as published
10
   by the Free Software Foundation; either version 3, or (at your
11
   option) any later version.
12
 
13
   GCC is distributed in the hope that it will be useful, but WITHOUT
14
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15
   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16
   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_M32C_H
23
#define GCC_M32C_H
24
 
25
/* Controlling the Compilation Driver, `gcc'.  */
26
 
27
#undef  STARTFILE_SPEC
28
#define STARTFILE_SPEC "crt0.o%s crtbegin.o%s"
29
 
30
#undef  ENDFILE_SPEC
31
#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
32
 
33
#undef  LINK_SPEC
34
#define LINK_SPEC "%{h*} %{v:-V} \
35
                   %{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic}"
36
 
37
/* There are four CPU series we support, but they basically break down
38
   into two families - the R8C/M16C families, with 16-bit address
39
   registers and one set of opcodes, and the M32CM/M32C group, with
40
   24-bit address registers and a different set of opcodes.  The
41
   assembler doesn't care except for which opcode set is needed; the
42
   big difference is in the memory maps, which we cover in
43
   LIB_SPEC.  */
44
 
45
#undef  ASM_SPEC
46
#define ASM_SPEC "\
47
%{mcpu=r8c:--m16c} \
48
%{mcpu=m16c:--m16c} \
49
%{mcpu=m32cm:--m32c} \
50
%{mcpu=m32c:--m32c} "
51
 
52
/* The default is R8C hardware.  We support a simulator, which has its
53
   own libgloss and link map, plus one default link map for each chip
54
   family.  Most of the logic here is making sure we do the right
55
   thing when no CPU is specified, which defaults to R8C.  */
56
#undef  LIB_SPEC
57
#define LIB_SPEC "-( -lc %{msim:-lsim}%{!msim:-lnosys} -) \
58
%{msim:%{!T*: %{mcpu=m32cm:%Tsim24.ld}%{mcpu=m32c:%Tsim24.ld} \
59
       %{!mcpu=m32cm:%{!mcpu=m32c:%Tsim16.ld}}}} \
60
%{!T*:%{!msim: %{mcpu=m16c:%Tm16c.ld} \
61
               %{mcpu=m32cm:%Tm32cm.ld} \
62
               %{mcpu=m32c:%Tm32c.ld} \
63
               %{!mcpu=m16c:%{!mcpu=m32cm:%{!mcpu=m32c:%Tr8c.ld}}}}} \
64
"
65
 
66
/* Run-time Target Specification */
67
 
68
/* Nothing unusual here.  */
69
#define TARGET_CPU_CPP_BUILTINS() \
70
  { \
71
    builtin_assert ("cpu=m32c"); \
72
    builtin_assert ("machine=m32c"); \
73
    builtin_define ("__m32c__=1"); \
74
    if (TARGET_R8C) \
75
      builtin_define ("__r8c_cpu__=1"); \
76
    if (TARGET_M16C) \
77
      builtin_define ("__m16c_cpu__=1"); \
78
    if (TARGET_M32CM) \
79
      builtin_define ("__m32cm_cpu__=1"); \
80
    if (TARGET_M32C) \
81
      builtin_define ("__m32c_cpu__=1"); \
82
  }
83
 
84
/* The pragma handlers need to know if we've started processing
85
   functions yet, as the memregs pragma should only be given at the
86
   beginning of the file.  This variable starts off TRUE and later
87
   becomes FALSE.  */
88
extern int ok_to_change_target_memregs;
89
 
90
/* TARGET_CPU is a multi-way option set in m32c.opt.  While we could
91
   use enums or defines for this, this and m32c.opt are the only
92
   places that know (or care) what values are being used.  */
93
#define TARGET_R8C      (target_cpu == 'r')
94
#define TARGET_M16C     (target_cpu == '6')
95
#define TARGET_M32CM    (target_cpu == 'm')
96
#define TARGET_M32C     (target_cpu == '3')
97
 
98
/* Address register sizes.  Warning: these are used all over the place
99
   to select between the two CPU families in general.  */
100
#define TARGET_A16      (TARGET_R8C || TARGET_M16C)
101
#define TARGET_A24      (TARGET_M32CM || TARGET_M32C)
102
 
103
/* Defining data structures for per-function information */
104
 
105
typedef struct GTY (()) machine_function
106
{
107
  /* How much we adjust the stack when returning from an exception
108
     handler.  */
109
  rtx eh_stack_adjust;
110
 
111
  /* TRUE if the current function is an interrupt handler.  */
112
  int is_interrupt;
113
 
114
  /* TRUE if the current function is a leaf function.  Currently, this
115
     only affects saving $a0 in interrupt functions.  */
116
  int is_leaf;
117
 
118
  /* Bitmask that keeps track of which registers are used in an
119
     interrupt function, so we know which ones need to be saved and
120
     restored.  */
121
  int intr_pushm;
122
  /* Likewise, one element for each memreg that needs to be saved.  */
123
  char intr_pushmem[16];
124
 
125
  /* TRUE if the current function can use a simple RTS to return, instead
126
     of the longer ENTER/EXIT pair.  */
127
  int use_rts;
128
}
129
machine_function;
130
 
131
#define INIT_EXPANDERS m32c_init_expanders ()
132
 
133
/* Storage Layout */
134
 
135
#define BITS_BIG_ENDIAN 0
136
#define BYTES_BIG_ENDIAN 0
137
#define WORDS_BIG_ENDIAN 0
138
 
139
/* We can do QI, HI, and SI operations pretty much equally well, but
140
   GCC expects us to have a "native" format, so we pick the one that
141
   matches "int".  Pointers are 16 bits for R8C/M16C (when TARGET_A16
142
   is true) and 24 bits for M32CM/M32C (when TARGET_A24 is true), but
143
   24-bit pointers are stored in 32-bit words.  */
144
#define BITS_PER_UNIT 8
145
#define UNITS_PER_WORD 2
146
#define POINTER_SIZE (TARGET_A16 ? 16 : 32)
147
#define POINTERS_EXTEND_UNSIGNED 1
148
/* We have a problem with libgcc2.  It only defines two versions of
149
   each function, one for "int" and one for "long long".  Ie it assumes
150
   that "sizeof (int) == sizeof (long)".  For the M32C this is not true
151
   and we need a third set of functions.  We explicitly define
152
   LIBGCC2_UNITS_PER_WORD here so that it is clear that we are expecting
153
   to get the SI and DI versions from the libgcc2.c sources, and we
154
   provide our own set of HI functions in m32c-lib2.c, which is why this
155
   definition is surrounded by #ifndef..#endif.  */
156
#ifndef LIBGCC2_UNITS_PER_WORD
157
#define LIBGCC2_UNITS_PER_WORD 4
158
#endif
159
 
160
/* These match the alignment enforced by the two types of stack operations.  */
161
#define PARM_BOUNDARY (TARGET_A16 ? 8 : 16)
162
#define STACK_BOUNDARY (TARGET_A16 ? 8 : 16)
163
 
164
/* We do this because we care more about space than about speed.  For
165
   the chips with 16-bit busses, we could set these to 16 if
166
   desired.  */
167
#define FUNCTION_BOUNDARY 8
168
#define BIGGEST_ALIGNMENT 8
169
 
170
/* Since we have a maximum structure alignment of 8 there
171
   is no need to enforce any alignment of bitfield types.  */
172
#undef  PCC_BITFIELD_TYPE_MATTERS
173
#define PCC_BITFIELD_TYPE_MATTERS 0
174
 
175
#define STRICT_ALIGNMENT 0
176
#define SLOW_BYTE_ACCESS 1
177
 
178
/* Layout of Source Language Data Types */
179
 
180
#define INT_TYPE_SIZE 16
181
#define SHORT_TYPE_SIZE 16
182
#define LONG_TYPE_SIZE 32
183
#define LONG_LONG_TYPE_SIZE 64
184
 
185
#define FLOAT_TYPE_SIZE 32
186
#define DOUBLE_TYPE_SIZE 64
187
#define LONG_DOUBLE_TYPE_SIZE 64
188
 
189
#define DEFAULT_SIGNED_CHAR 1
190
 
191
#undef PTRDIFF_TYPE
192
#define PTRDIFF_TYPE (TARGET_A16 ? "int" : "long int")
193
 
194
#undef UINTPTR_TYPE
195
#define UINTPTR_TYPE (TARGET_A16 ? "unsigned int" : "long unsigned int")
196
 
197
#undef  SIZE_TYPE
198
#define SIZE_TYPE "unsigned int"
199
 
200
#undef  WCHAR_TYPE
201
#define WCHAR_TYPE "long int"
202
 
203
#undef  WCHAR_TYPE_SIZE
204
#define WCHAR_TYPE_SIZE 32
205
 
206
/* REGISTER USAGE */
207
 
208
/* Register Basics */
209
 
210
/* Register layout:
211
 
212
        [r0h][r0l]  $r0  (16 bits, or two 8-bit halves)
213
        [--------]  $r2  (16 bits)
214
        [r1h][r1l]  $r1  (16 bits, or two 8-bit halves)
215
        [--------]  $r3  (16 bits)
216
   [---][--------]  $a0  (might be 24 bits)
217
   [---][--------]  $a1  (might be 24 bits)
218
   [---][--------]  $sb  (might be 24 bits)
219
   [---][--------]  $fb  (might be 24 bits)
220
   [---][--------]  $sp  (might be 24 bits)
221
   [-------------]  $pc  (20 or 24 bits)
222
             [---]  $flg (CPU flags)
223
   [---][--------]  $argp (virtual)
224
        [--------]  $mem0 (all 16 bits)
225
          . . .
226
        [--------]  $mem14
227
*/
228
 
229
#define FIRST_PSEUDO_REGISTER   20
230
 
231
/* Note that these two tables are modified based on which CPU family
232
   you select; see m32c_conditional_register_usage for details.  */
233
 
234
/* r0 r2 r1 r3 - a0 a1 sb fb - sp pc flg argp - mem0..mem14 */
235
#define FIXED_REGISTERS     { 0, 0, 0, 0, \
236
                              0, 0, 1, 0, \
237
                              1, 1, 0, 1, \
238
                              0, 0, 0, 0, 0, 0, 0, 0 }
239
#define CALL_USED_REGISTERS { 1, 1, 1, 1, \
240
                              1, 1, 1, 0, \
241
                              1, 1, 1, 1, \
242
                              1, 1, 1, 1, 1, 1, 1, 1 }
243
 
244
/* The *_REGNO theme matches m32c.md and most register number
245
   arguments; the PC_REGNUM is the odd one out.  */
246
#ifndef PC_REGNO
247
#define PC_REGNO 9
248
#endif
249
#define PC_REGNUM PC_REGNO
250
 
251
/* Order of Allocation of Registers */
252
 
253
#define REG_ALLOC_ORDER { \
254
        0, 1, 2, 3, 4, 5, /* r0..r3, a0, a1 */ \
255
        12, 13, 14, 15, 16, 17, 18, 19, /* mem0..mem7 */        \
256
        6, 7, 8, 9, 10, 11 /* sb, fb, sp, pc, flg, ap */ }
257
 
258
/* How Values Fit in Registers */
259
 
260
#define HARD_REGNO_NREGS(R,M) m32c_hard_regno_nregs (R, M)
261
#define HARD_REGNO_MODE_OK(R,M) m32c_hard_regno_ok (R, M)
262
#define MODES_TIEABLE_P(M1,M2) m32c_modes_tieable_p (M1, M2)
263
#define AVOID_CCMODE_COPIES
264
 
265
/* Register Classes */
266
 
267
/* Most registers are special purpose in some form or another, so this
268
   table is pretty big.  Class names are used for constraints also;
269
   for example the HL_REGS class (HL below) is "Rhl" in the md files.
270
   See m32c_reg_class_from_constraint for the mapping.  There's some
271
   duplication so that we can better isolate the reason for using
272
   constraints in the md files from the actual registers used; for
273
   example we may want to exclude a1a0 from SI_REGS in the future,
274
   without precluding their use as HImode registers.  */
275
 
276
/* m7654 - m3210 - argp flg pc sp - fb sb a1 a0 - r3 r1 r2 r0 */
277
/*       mmPAR */
278
#define REG_CLASS_CONTENTS \
279
{ { 0x00000000 }, /* NO */\
280
  { 0x00000100 }, /* SP  - sp */\
281
  { 0x00000080 }, /* FB  - fb */\
282
  { 0x00000040 }, /* SB  - sb */\
283
  { 0x000001c0 }, /* CR  - sb fb sp */\
284
  { 0x00000001 }, /* R0  - r0 */\
285
  { 0x00000004 }, /* R1  - r1 */\
286
  { 0x00000002 }, /* R2  - r2 */\
287
  { 0x00000008 }, /* R3  - r3 */\
288
  { 0x00000003 }, /* R02 - r0r2 */\
289
  { 0x0000000c }, /* R13 - r1r3 */\
290
  { 0x00000005 }, /* HL  - r0 r1 */\
291
  { 0x0000000a }, /* R23 - r2 r3 */\
292
  { 0x0000000f }, /* R03 - r0r2 r1r3 */\
293
  { 0x00000010 }, /* A0  - a0 */\
294
  { 0x00000020 }, /* A1  - a1 */\
295
  { 0x00000030 }, /* A   - a0 a1 */\
296
  { 0x000000f0 }, /* AD  - a0 a1 sb fp */\
297
  { 0x000001f0 }, /* PS  - a0 a1 sb fp sp */\
298
  { 0x00000033 }, /* R02A  - r0r2 a0 a1 */ \
299
  { 0x0000003f }, /* RA  - r0 r1 r2 r3 a0 a1 */\
300
  { 0x0000007f }, /* GENERAL */\
301
  { 0x00000400 }, /* FLG */\
302
  { 0x000001ff }, /* HC  - r0l r1 r2 r3 a0 a1 sb fb sp */\
303
  { 0x000ff000 }, /* MEM */\
304
  { 0x000ff003 }, /* R02_A_MEM */\
305
  { 0x000ff005 }, /* A_HL_MEM */\
306
  { 0x000ff00c }, /* R1_R3_A_MEM */\
307
  { 0x000ff00f }, /* R03_MEM */\
308
  { 0x000ff03f }, /* A_HI_MEM */\
309
  { 0x000ff0ff }, /* A_AD_CR_MEM_SI */\
310
  { 0x000ff5ff }, /* ALL */\
311
}
312
 
313
#define QI_REGS HL_REGS
314
#define HI_REGS RA_REGS
315
#define SI_REGS R03_REGS
316
#define DI_REGS R03_REGS
317
 
318
enum reg_class
319
{
320
  NO_REGS,
321
  SP_REGS,
322
  FB_REGS,
323
  SB_REGS,
324
  CR_REGS,
325
  R0_REGS,
326
  R1_REGS,
327
  R2_REGS,
328
  R3_REGS,
329
  R02_REGS,
330
  R13_REGS,
331
  HL_REGS,
332
  R23_REGS,
333
  R03_REGS,
334
  A0_REGS,
335
  A1_REGS,
336
  A_REGS,
337
  AD_REGS,
338
  PS_REGS,
339
  R02A_REGS,
340
  RA_REGS,
341
  GENERAL_REGS,
342
  FLG_REGS,
343
  HC_REGS,
344
  MEM_REGS,
345
  R02_A_MEM_REGS,
346
  A_HL_MEM_REGS,
347
  R1_R3_A_MEM_REGS,
348
  R03_MEM_REGS,
349
  A_HI_MEM_REGS,
350
  A_AD_CR_MEM_SI_REGS,
351
  ALL_REGS,
352
  LIM_REG_CLASSES
353
};
354
 
355
#define N_REG_CLASSES LIM_REG_CLASSES
356
 
357
#define REG_CLASS_NAMES {\
358
"NO_REGS", \
359
"SP_REGS", \
360
"FB_REGS", \
361
"SB_REGS", \
362
"CR_REGS", \
363
"R0_REGS", \
364
"R1_REGS", \
365
"R2_REGS", \
366
"R3_REGS", \
367
"R02_REGS", \
368
"R13_REGS", \
369
"HL_REGS", \
370
"R23_REGS", \
371
"R03_REGS", \
372
"A0_REGS", \
373
"A1_REGS", \
374
"A_REGS", \
375
"AD_REGS", \
376
"PS_REGS", \
377
"R02A_REGS", \
378
"RA_REGS", \
379
"GENERAL_REGS", \
380
"FLG_REGS", \
381
"HC_REGS", \
382
"MEM_REGS", \
383
"R02_A_MEM_REGS", \
384
"A_HL_MEM_REGS", \
385
"R1_R3_A_MEM_REGS", \
386
"R03_MEM_REGS", \
387
"A_HI_MEM_REGS", \
388
"A_AD_CR_MEM_SI_REGS", \
389
"ALL_REGS", \
390
}
391
 
392
#define REGNO_REG_CLASS(R) m32c_regno_reg_class (R)
393
 
394
/* We support simple displacements off address registers, nothing else.  */
395
#define BASE_REG_CLASS A_REGS
396
#define INDEX_REG_CLASS NO_REGS
397
 
398
/* We primarily use the new "long" constraint names, with the initial
399
   letter classifying the constraint type and following letters
400
   specifying which.  The types are:
401
 
402
   I - integer values
403
   R - register classes
404
   S - memory references (M was used)
405
   A - addresses (currently unused)
406
*/
407
 
408
#define CONSTRAINT_LEN(CHAR,STR) \
409
        ((CHAR) == 'I' ? 3 \
410
         : (CHAR) == 'R' ? 3 \
411
         : (CHAR) == 'S' ? 2 \
412
         : (CHAR) == 'A' ? 2 \
413
         : DEFAULT_CONSTRAINT_LEN(CHAR,STR))
414
#define REG_CLASS_FROM_CONSTRAINT(CHAR,STR) \
415
        (enum reg_class) m32c_reg_class_from_constraint (CHAR, STR)
416
 
417
#define REGNO_OK_FOR_BASE_P(NUM) m32c_regno_ok_for_base_p (NUM)
418
#define REGNO_OK_FOR_INDEX_P(NUM) 0
419
 
420
#define LIMIT_RELOAD_CLASS(MODE,CLASS) \
421
  (enum reg_class) m32c_limit_reload_class (MODE, CLASS)
422
 
423
#define SECONDARY_RELOAD_CLASS(CLASS,MODE,X) \
424
  (enum reg_class) m32c_secondary_reload_class (CLASS, MODE, X)
425
 
426
#define TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P hook_bool_mode_true
427
 
428
#define CANNOT_CHANGE_MODE_CLASS(F,T,C) m32c_cannot_change_mode_class(F,T,C)
429
 
430
#define CONST_OK_FOR_CONSTRAINT_P(VALUE,C,STR) \
431
        m32c_const_ok_for_constraint_p (VALUE, C, STR)
432
#define CONST_DOUBLE_OK_FOR_CONSTRAINT_P(VALUE,C,STR) 0
433
#define EXTRA_CONSTRAINT_STR(VALUE,C,STR) \
434
        m32c_extra_constraint_p (VALUE, C, STR)
435
#define EXTRA_MEMORY_CONSTRAINT(C,STR) \
436
        m32c_extra_memory_constraint (C, STR)
437
#define EXTRA_ADDRESS_CONSTRAINT(C,STR) \
438
        m32c_extra_address_constraint (C, STR)
439
 
440
/* STACK AND CALLING */
441
 
442
/* Frame Layout */
443
 
444
/* Standard push/pop stack, no surprises here.  */
445
 
446
#define STACK_GROWS_DOWNWARD 1
447
#define STACK_PUSH_CODE PRE_DEC
448
#define FRAME_GROWS_DOWNWARD 1
449
 
450
#define STARTING_FRAME_OFFSET 0
451
#define FIRST_PARM_OFFSET(F) 0
452
 
453
#define RETURN_ADDR_RTX(COUNT,FA) m32c_return_addr_rtx (COUNT)
454
 
455
#define INCOMING_RETURN_ADDR_RTX m32c_incoming_return_addr_rtx()
456
#define INCOMING_FRAME_SP_OFFSET (TARGET_A24 ? 4 : 3)
457
 
458
/* Exception Handling Support */
459
 
460
#define EH_RETURN_DATA_REGNO(N) m32c_eh_return_data_regno (N)
461
#define EH_RETURN_STACKADJ_RTX m32c_eh_return_stackadj_rtx ()
462
 
463
/* Registers That Address the Stack Frame */
464
 
465
#ifndef FP_REGNO
466
#define FP_REGNO 7
467
#endif
468
#ifndef SP_REGNO
469
#define SP_REGNO 8
470
#endif
471
#define AP_REGNO 11
472
 
473
#define STACK_POINTER_REGNUM    SP_REGNO
474
#define FRAME_POINTER_REGNUM    FP_REGNO
475
#define ARG_POINTER_REGNUM      AP_REGNO
476
 
477
/* The static chain must be pointer-capable.  */
478
#define STATIC_CHAIN_REGNUM A0_REGNO
479
 
480
#define DWARF_FRAME_REGISTERS 20
481
#define DWARF_FRAME_REGNUM(N) m32c_dwarf_frame_regnum (N)
482
#define DBX_REGISTER_NUMBER(N) m32c_dwarf_frame_regnum (N)
483
 
484
#undef ASM_PREFERRED_EH_DATA_FORMAT
485
/* This is the same as the default in practice, except that by making
486
   it explicit we tell binutils what size pointers to use.  */
487
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
488
  (TARGET_A16 ? DW_EH_PE_udata2 : DW_EH_PE_udata4)
489
 
490
/* Eliminating Frame Pointer and Arg Pointer */
491
 
492
#define ELIMINABLE_REGS \
493
  {{AP_REGNO, SP_REGNO}, \
494
   {AP_REGNO, FB_REGNO}, \
495
   {FB_REGNO, SP_REGNO}}
496
 
497
#define INITIAL_ELIMINATION_OFFSET(FROM,TO,VAR) \
498
        (VAR) = m32c_initial_elimination_offset(FROM,TO)
499
 
500
/* Passing Function Arguments on the Stack */
501
 
502
#define PUSH_ARGS 1
503
#define PUSH_ROUNDING(N) m32c_push_rounding (N)
504
#define CALL_POPS_ARGS(C) 0
505
 
506
/* Passing Arguments in Registers */
507
 
508
typedef struct m32c_cumulative_args
509
{
510
  /* For address of return value buffer (structures are returned by
511
     passing the address of a buffer as an invisible first argument.
512
     This identifies it).  If set, the current parameter will be put
513
     on the stack, regardless of type.  */
514
  int force_mem;
515
  /* First parm is 1, parm 0 is hidden pointer for returning
516
     aggregates.  */
517
  int parm_num;
518
} m32c_cumulative_args;
519
 
520
#define CUMULATIVE_ARGS m32c_cumulative_args
521
#define INIT_CUMULATIVE_ARGS(CA,FNTYPE,LIBNAME,FNDECL,N_NAMED_ARGS) \
522
        m32c_init_cumulative_args (&(CA),FNTYPE,LIBNAME,FNDECL,N_NAMED_ARGS)
523
#define FUNCTION_ARG_REGNO_P(r) m32c_function_arg_regno_p (r)
524
 
525
/* How Large Values Are Returned */
526
 
527
#define DEFAULT_PCC_STRUCT_RETURN 1
528
 
529
/* Function Entry and Exit */
530
 
531
#define EXIT_IGNORE_STACK 0
532
#define EPILOGUE_USES(REGNO) m32c_epilogue_uses(REGNO)
533
#define EH_USES(REGNO) 0        /* FIXME */
534
 
535
/* Generating Code for Profiling */
536
 
537
#define FUNCTION_PROFILER(FILE,LABELNO)
538
 
539
/* Implementing the Varargs Macros */
540
 
541
/* Trampolines for Nested Functions */
542
 
543
#define TRAMPOLINE_SIZE m32c_trampoline_size ()
544
#define TRAMPOLINE_ALIGNMENT m32c_trampoline_alignment ()
545
 
546
/* Addressing Modes */
547
 
548
#define HAVE_PRE_DECREMENT 1
549
#define HAVE_POST_INCREMENT 1
550
#define MAX_REGS_PER_ADDRESS 1
551
 
552
/* This is passed to the macros below, so that they can be implemented
553
   in m32c.c.  */
554
#ifdef REG_OK_STRICT
555
#define REG_OK_STRICT_V 1
556
#else
557
#define REG_OK_STRICT_V 0
558
#endif
559
 
560
#define REG_OK_FOR_BASE_P(X) m32c_reg_ok_for_base_p (X, REG_OK_STRICT_V)
561
#define REG_OK_FOR_INDEX_P(X) 0
562
 
563
/* #define FIND_BASE_TERM(X) when we do unspecs for symrefs */
564
 
565
#define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \
566
        if (m32c_legitimize_reload_address(&(X),MODE,OPNUM,TYPE,IND_LEVELS)) \
567
          goto WIN;
568
 
569
/* Address spaces.  */
570
#define ADDR_SPACE_FAR  1
571
 
572
 
573
/* Condition Code Status */
574
 
575
#define REVERSIBLE_CC_MODE(MODE) 1
576
 
577
/* Dividing the Output into Sections (Texts, Data, ...) */
578
 
579
#define TEXT_SECTION_ASM_OP ".text"
580
#define DATA_SECTION_ASM_OP ".data"
581
#define BSS_SECTION_ASM_OP ".bss"
582
 
583
#define CTOR_LIST_BEGIN
584
#define CTOR_LIST_END
585
#define DTOR_LIST_BEGIN
586
#define DTOR_LIST_END
587
#define CTORS_SECTION_ASM_OP "\t.section\t.init_array,\"aw\",%init_array"
588
#define DTORS_SECTION_ASM_OP "\t.section\t.fini_array,\"aw\",%fini_array"
589
#define INIT_ARRAY_SECTION_ASM_OP "\t.section\t.init_array,\"aw\",%init_array"
590
#define FINI_ARRAY_SECTION_ASM_OP "\t.section\t.fini_array,\"aw\",%fini_array"
591
 
592
/* The Overall Framework of an Assembler File */
593
 
594
#define ASM_COMMENT_START ";"
595
#define ASM_APP_ON ""
596
#define ASM_APP_OFF ""
597
 
598
/* Output and Generation of Labels */
599
 
600
#define GLOBAL_ASM_OP "\t.global\t"
601
 
602
/* Output of Assembler Instructions */
603
 
604
#define REGISTER_NAMES {        \
605
  "r0", "r2", "r1", "r3", \
606
  "a0", "a1", "sb", "fb", "sp", \
607
  "pc", "flg", "argp", \
608
  "mem0",  "mem2",  "mem4",  "mem6",  "mem8",  "mem10",  "mem12",  "mem14", \
609
}
610
 
611
#define ADDITIONAL_REGISTER_NAMES { \
612
  {"r0l", 0}, \
613
  {"r1l", 2}, \
614
  {"r0r2", 0}, \
615
  {"r1r3", 2}, \
616
  {"a0a1", 4}, \
617
  {"r0r2r1r3", 0} }
618
 
619
#undef USER_LABEL_PREFIX
620
#define USER_LABEL_PREFIX "_"
621
 
622
#define ASM_OUTPUT_REG_PUSH(S,R) m32c_output_reg_push (S, R)
623
#define ASM_OUTPUT_REG_POP(S,R) m32c_output_reg_pop (S, R)
624
 
625
#define ASM_OUTPUT_ALIGNED_DECL_COMMON(STREAM, DECL, NAME, SIZE, ALIGNMENT) \
626
        m32c_output_aligned_common (STREAM, DECL, NAME, SIZE, ALIGNMENT, 1)
627
 
628
#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGNMENT) \
629
        m32c_output_aligned_common (STREAM, DECL, NAME, SIZE, ALIGNMENT, 0)
630
 
631
 
632
/* Output of Dispatch Tables */
633
 
634
#define ASM_OUTPUT_ADDR_VEC_ELT(S,V) \
635
        fprintf (S, "\t.word L%d\n", V)
636
 
637
/* Assembler Commands for Exception Regions */
638
 
639
#define DWARF_CIE_DATA_ALIGNMENT -1
640
 
641
/* Assembler Commands for Alignment */
642
 
643
#define ASM_OUTPUT_ALIGN(STREAM,POWER) \
644
        fprintf (STREAM, "\t.p2align\t%d\n", POWER);
645
 
646
/* Controlling Debugging Information Format */
647
 
648
#define DWARF2_ADDR_SIZE        4
649
 
650
/* Miscellaneous Parameters */
651
 
652
#define HAS_LONG_COND_BRANCH false
653
#define HAS_LONG_UNCOND_BRANCH true
654
#define CASE_VECTOR_MODE SImode
655
#define LOAD_EXTEND_OP(MEM) ZERO_EXTEND
656
 
657
#define MOVE_MAX 4
658
#define TRULY_NOOP_TRUNCATION(op,ip) 1
659
 
660
#define STORE_FLAG_VALUE 1
661
 
662
/* 16- or 24-bit pointers */
663
#define Pmode (TARGET_A16 ? HImode : PSImode)
664
#define FUNCTION_MODE QImode
665
 
666
#define REGISTER_TARGET_PRAGMAS() m32c_register_pragmas()
667
 
668
#endif

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