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[pf3gnuchains/gcc-fork.git] / gcc / config / rx / rx.h
1 /* GCC backend definitions for the Renesas RX processor.
2    Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
3    Contributed by Red Hat.
4
5    This file is part of GCC.
6
7    GCC is free software; you can redistribute it and/or modify it
8    under the terms of the GNU General Public License as published
9    by the Free Software Foundation; either version 3, or (at your
10    option) any later version.
11
12    GCC is distributed in the hope that it will be useful, but WITHOUT
13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15    License for more details.
16
17    You should have received a copy of the GNU General Public License
18    along with GCC; see the file COPYING3.  If not see
19    <http://www.gnu.org/licenses/>.  */
20 \f
21
22 #define TARGET_CPU_CPP_BUILTINS()               \
23   do                                            \
24     {                                           \
25       builtin_define ("__RX__");                \
26       builtin_assert ("cpu=RX");                \
27       if (rx_cpu_type == RX610)                 \
28         {                                       \
29           builtin_define ("__RX610__");         \
30           builtin_assert ("machine=RX610");     \
31         }                                       \
32      else                                       \
33         builtin_assert ("machine=RX600");       \
34                                                 \
35       if (TARGET_BIG_ENDIAN_DATA)               \
36         builtin_define ("__RX_BIG_ENDIAN__");   \
37       else                                      \
38         builtin_define ("__RX_LITTLE_ENDIAN__");\
39                                                 \
40       if (TARGET_64BIT_DOUBLES)                 \
41         builtin_define ("__RX_64BIT_DOUBLES__");\
42       else                                      \
43         builtin_define ("__RX_32BIT_DOUBLES__");\
44                                                 \
45       if (ALLOW_RX_FPU_INSNS)                   \
46         builtin_define ("__RX_FPU_INSNS__");    \
47                                                 \
48       if (TARGET_AS100_SYNTAX)                  \
49         builtin_define ("__RX_AS100_SYNTAX__"); \
50       else                                      \
51         builtin_define ("__RX_GAS_SYNTAX__");   \
52     }                                           \
53   while (0)
54
55 enum rx_cpu_types
56 {
57   RX600,
58   RX610,
59   RX200
60 };
61
62 extern enum rx_cpu_types  rx_cpu_type;
63
64 #undef  CC1_SPEC
65 #define CC1_SPEC "\
66   %{mas100-syntax:%{gdwarf*:%e-mas100-syntax is incompatible with -gdwarf}} \
67   %{mcpu=rx200:%{fpu:%erx200 cpu does not have FPU hardware}}"
68
69 #undef  STARTFILE_SPEC
70 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s} crtbegin.o%s"
71
72 #undef  ENDFILE_SPEC
73 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
74
75 #undef  ASM_SPEC
76 #define ASM_SPEC "\
77 %{mbig-endian-data:-mbig-endian-data} \
78 %{m64bit-doubles:-m64bit-doubles} \
79 %{!m64bit-doubles:-m32bit-doubles} \
80 %{msmall-data-limit*:-msmall-data-limit} \
81 %{mrelax:-relax} \
82 "
83
84 #undef  LIB_SPEC
85 #define LIB_SPEC "                                      \
86 --start-group                                           \
87 -lc                                                     \
88 %{msim*:-lsim}%{!msim*:-lnosys}                         \
89 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}      \
90 --end-group                                             \
91 %{!T*: %{msim*:%Trx-sim.ld}%{!msim*:%Trx.ld}}           \
92 "
93
94 #undef  LINK_SPEC
95 #define LINK_SPEC "%{mbig-endian-data:--oformat elf32-rx-be} %{mrelax:-relax}"
96 \f
97
98 #define BITS_BIG_ENDIAN                 0
99 #define BYTES_BIG_ENDIAN                TARGET_BIG_ENDIAN_DATA
100 #define WORDS_BIG_ENDIAN                TARGET_BIG_ENDIAN_DATA
101
102 #define UNITS_PER_WORD                  4
103
104 #define INT_TYPE_SIZE                   32
105 #define LONG_TYPE_SIZE                  32
106 #define LONG_LONG_TYPE_SIZE             64
107
108 #define FLOAT_TYPE_SIZE                 32
109 #define DOUBLE_TYPE_SIZE                (TARGET_64BIT_DOUBLES ? 64 : 32)
110 #define LONG_DOUBLE_TYPE_SIZE           DOUBLE_TYPE_SIZE
111
112 #ifdef __RX_32BIT_DOUBLES__
113 #define LIBGCC2_HAS_DF_MODE             0
114 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE   32
115 #else
116 #define LIBGCC2_HAS_DF_MODE             1
117 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE   64
118 #endif
119
120 #define DEFAULT_SIGNED_CHAR             0
121
122 #define STRICT_ALIGNMENT                1
123 #define FUNCTION_BOUNDARY               8
124 #define BIGGEST_ALIGNMENT               32
125 #define STACK_BOUNDARY                  32
126 #define PARM_BOUNDARY                   8
127
128 #define STACK_GROWS_DOWNWARD            1
129 #define FRAME_GROWS_DOWNWARD            0
130 #define FIRST_PARM_OFFSET(FNDECL)       0
131
132 #define MAX_REGS_PER_ADDRESS            2
133
134 #define Pmode                           SImode
135 #define POINTER_SIZE                    32
136 #undef  SIZE_TYPE
137 #define SIZE_TYPE                       "long unsigned int"
138 #undef  PTRDIFF_TYPE
139 #define PTRDIFF_TYPE                    "long int"
140 #define POINTERS_EXTEND_UNSIGNED        1
141 #define FUNCTION_MODE                   QImode
142 #define CASE_VECTOR_MODE                Pmode
143 #define WORD_REGISTER_OPERATIONS        1
144 #define HAS_LONG_COND_BRANCH            0
145 #define HAS_LONG_UNCOND_BRANCH          0
146
147 #define MOVE_MAX                        4
148 #define STARTING_FRAME_OFFSET           0
149
150 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC)   1
151
152 #define LEGITIMATE_CONSTANT_P(X)        rx_is_legitimate_constant (X)
153
154 #define HAVE_PRE_DECCREMENT             1
155 #define HAVE_POST_INCREMENT             1
156
157 #define MOVE_RATIO(SPEED)               ((SPEED) ? 4 : 2)
158 #define SLOW_BYTE_ACCESS                1
159
160 #define STORE_FLAG_VALUE                1
161 #define LOAD_EXTEND_OP(MODE)            SIGN_EXTEND
162 #define SHORT_IMMEDIATES_SIGN_EXTEND    1
163 \f
164 enum reg_class
165 {
166   NO_REGS,                      /* No registers in set.  */
167   GR_REGS,                      /* Integer registers.  */
168   ALL_REGS,                     /* All registers.  */
169   LIM_REG_CLASSES               /* Max value + 1.  */
170 };
171
172 #define REG_CLASS_NAMES                                 \
173 {                                                       \
174   "NO_REGS",                                            \
175   "GR_REGS",                                            \
176   "ALL_REGS"                                            \
177 }
178
179 #define REG_CLASS_CONTENTS                              \
180 {                                                       \
181   { 0x00000000 },       /* No registers,  */            \
182   { 0x0000ffff },       /* Integer registers.  */       \
183   { 0x0000ffff }        /* All registers.  */           \
184 }
185
186 #define IRA_COVER_CLASSES                               \
187   {                                                     \
188     GR_REGS, LIM_REG_CLASSES                            \
189   }
190
191 #define SMALL_REGISTER_CLASSES          0
192 #define N_REG_CLASSES                   (int) LIM_REG_CLASSES
193 #define CLASS_MAX_NREGS(CLASS, MODE)    ((GET_MODE_SIZE (MODE) \
194                                           + UNITS_PER_WORD - 1) \
195                                          / UNITS_PER_WORD)
196
197 #define GENERAL_REGS                    GR_REGS
198 #define BASE_REG_CLASS                  GR_REGS
199 #define INDEX_REG_CLASS                 GR_REGS
200
201 #define FIRST_PSEUDO_REGISTER           17
202
203 #define REGNO_REG_CLASS(REGNO)          ((REGNO) < FIRST_PSEUDO_REGISTER \
204                                          ? GR_REGS : NO_REGS)
205
206 #define STACK_POINTER_REGNUM            0
207 #define FUNC_RETURN_REGNUM              1
208 #define FRAME_POINTER_REGNUM            6
209 #define ARG_POINTER_REGNUM              7
210 #define STATIC_CHAIN_REGNUM             8
211 #define TRAMPOLINE_TEMP_REGNUM          9
212 #define STRUCT_VAL_REGNUM               15
213 #define CC_REGNUM                       16
214
215 /* This is the register which is used to hold the address of the start
216    of the small data area, if that feature is being used.  Note - this
217    register must not be call_used because otherwise library functions
218    that are compiled without small data support might clobber it.
219
220    FIXME: The function gcc/config/rx/rx.c:rx_gen_move_template() has a
221    built in copy of this register's name, rather than constructing the
222    name from this #define.  */
223 #define GP_BASE_REGNUM                  13
224
225 #define ELIMINABLE_REGS                                 \
226 {{ ARG_POINTER_REGNUM,   STACK_POINTER_REGNUM },        \
227  { ARG_POINTER_REGNUM,   FRAME_POINTER_REGNUM },        \
228  { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }}
229
230 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)    \
231   (OFFSET) = rx_initial_elimination_offset ((FROM), (TO))
232
233
234 #define FUNCTION_ARG_REGNO_P(N)         (((N) >= 1) && ((N) <= 4))
235 #define FUNCTION_VALUE_REGNO_P(N)       ((N) == FUNC_RETURN_REGNUM)
236 #define DEFAULT_PCC_STRUCT_RETURN       0
237
238 #define FIXED_REGISTERS                                 \
239 {                                                       \
240   1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1     \
241 }
242
243 #define CALL_USED_REGISTERS                             \
244 {                                                       \
245   1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1     \
246 }
247
248 #define LIBCALL_VALUE(MODE)                             \
249   gen_rtx_REG (((GET_MODE_CLASS (MODE) != MODE_INT      \
250                  || GET_MODE_SIZE (MODE) >= 4)          \
251                 ? (MODE)                                \
252                 : SImode),                              \
253                FUNC_RETURN_REGNUM)
254
255 /* Order of allocation of registers.  */
256
257 #define REG_ALLOC_ORDER                                         \
258 {  7,  10,  11,  12,  13,  14,  4,  3,  2,  1, 9, 8, 6, 5, 15   \
259 }
260
261 #define REGNO_IN_RANGE(REGNO, MIN, MAX)         \
262   (IN_RANGE ((REGNO), (MIN), (MAX))             \
263    || (reg_renumber != NULL                     \
264        && reg_renumber[(REGNO)] >= (MIN)        \
265        && reg_renumber[(REGNO)] <= (MAX)))
266
267 #ifdef REG_OK_STRICT
268 #define REGNO_OK_FOR_BASE_P(regno)      REGNO_IN_RANGE (regno, 0, 15)
269 #else
270 #define REGNO_OK_FOR_BASE_P(regno)      1
271 #endif
272
273 #define REGNO_OK_FOR_INDEX_P(regno)     REGNO_OK_FOR_BASE_P (regno)
274
275 #define RTX_OK_FOR_BASE(X, STRICT)                              \
276   ((STRICT) ?                                                   \
277    (   (REG_P (X)                                               \
278         && REGNO_IN_RANGE (REGNO (X), 0, 15))                   \
279     || (GET_CODE (X) == SUBREG                                  \
280         && REG_P (SUBREG_REG (X))                               \
281         && REGNO_IN_RANGE (REGNO (SUBREG_REG (X)), 0, 15)))     \
282    :                                                            \
283     ( (REG_P (X)                                                \
284        || (GET_CODE (X) == SUBREG                               \
285            && REG_P (SUBREG_REG (X))))))
286
287 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)       \
288   do                                                    \
289     {                                                   \
290       if (rx_is_mode_dependent_addr (ADDR))             \
291         goto LABEL;                                     \
292     }                                                   \
293   while (0)
294 \f
295
296 #define RETURN_ADDR_RTX(COUNT, FRAMEADDR)                               \
297   ((COUNT) == 0                                                         \
298    ? gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, arg_pointer_rtx, GEN_INT (-4))) \
299    : NULL_RTX)
300
301 #define INCOMING_RETURN_ADDR_RTX        gen_rtx_MEM (Pmode, stack_pointer_rtx)
302
303 #define ACCUMULATE_OUTGOING_ARGS        1
304
305 typedef unsigned int CUMULATIVE_ARGS;
306
307 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
308   (CUM) = 0
309
310 \f
311 #define TRAMPOLINE_SIZE         (! TARGET_BIG_ENDIAN_DATA ? 14 : 20)
312 #define TRAMPOLINE_ALIGNMENT    32
313 \f
314 #define NO_PROFILE_COUNTERS     1
315 #define PROFILE_BEFORE_PROLOGUE 1
316
317 #define FUNCTION_PROFILER(FILE, LABELNO)        \
318     fprintf (FILE, "\tbsr\t__mcount\n");
319 \f
320
321 #define HARD_REGNO_NREGS(REGNO, MODE)   CLASS_MAX_NREGS (0, MODE)
322
323 #define HARD_REGNO_MODE_OK(REGNO, MODE)                         \
324   REGNO_REG_CLASS (REGNO) == GR_REGS
325
326 #define MODES_TIEABLE_P(MODE1, MODE2)                           \
327   (   (   GET_MODE_CLASS (MODE1) == MODE_FLOAT                  \
328        || GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT)         \
329    == (   GET_MODE_CLASS (MODE2) == MODE_FLOAT                  \
330        || GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))
331 \f
332
333 #define REGISTER_NAMES                                          \
334   {                                                             \
335     "r0",  "r1",  "r2",   "r3",   "r4",   "r5",   "r6",   "r7", \
336       "r8",  "r9",  "r10",  "r11",  "r12",  "r13",  "r14",  "r15", "cc" \
337   }
338
339 #define ADDITIONAL_REGISTER_NAMES       \
340 {                                       \
341     { "sp",    STACK_POINTER_REGNUM }   \
342   , { "fp",    FRAME_POINTER_REGNUM }   \
343   , { "arg",   ARG_POINTER_REGNUM }     \
344   , { "chain", STATIC_CHAIN_REGNUM }    \
345 }
346
347 #define DATA_SECTION_ASM_OP                             \
348   (TARGET_AS100_SYNTAX ? "\t.SECTION D,DATA"            \
349    : "\t.section D,\"aw\",@progbits\n\t.p2align 2")
350
351 #define SDATA_SECTION_ASM_OP                            \
352   (TARGET_AS100_SYNTAX ? "\t.SECTION D_2,DATA,ALIGN=2"  \
353    : "\t.section D_2,\"aw\",@progbits\n\t.p2align 1")
354
355 #undef  READONLY_DATA_SECTION_ASM_OP
356 #define READONLY_DATA_SECTION_ASM_OP                    \
357   (TARGET_AS100_SYNTAX ? "\t.SECTION C,ROMDATA,ALIGN=4" \
358    : "\t.section C,\"a\",@progbits\n\t.p2align 2")
359
360 #define BSS_SECTION_ASM_OP                              \
361   (TARGET_AS100_SYNTAX ? "\t.SECTION B,DATA,ALIGN=4"    \
362    : "\t.section B,\"w\",@nobits\n\t.p2align 2")
363
364 #define SBSS_SECTION_ASM_OP                             \
365   (TARGET_AS100_SYNTAX ? "\t.SECTION B_2,DATA,ALIGN=2"  \
366    : "\t.section B_2,\"w\",@nobits\n\t.p2align 1")
367
368 /* The following definitions are conditional depending upon whether the
369    compiler is being built or crtstuff.c is being compiled by the built
370    compiler.  */
371 #if defined CRT_BEGIN || defined CRT_END
372 # ifdef __RX_AS100_SYNTAX
373 #  define TEXT_SECTION_ASM_OP         "\t.SECTION P,CODE"
374 #  define CTORS_SECTION_ASM_OP        "\t.SECTION init_array,CODE"
375 #  define DTORS_SECTION_ASM_OP        "\t.SECTION fini_array,CODE"
376 #  define INIT_ARRAY_SECTION_ASM_OP   "\t.SECTION init_array,CODE"
377 #  define FINI_ARRAY_SECTION_ASM_OP   "\t.SECTION fini_array,CODE"
378 # else
379 #  define TEXT_SECTION_ASM_OP         "\t.section P,\"ax\""
380 #  define CTORS_SECTION_ASM_OP        \
381   "\t.section\t.init_array,\"aw\",@init_array"
382 #  define DTORS_SECTION_ASM_OP        \
383   "\t.section\t.fini_array,\"aw\",@fini_array"
384 #  define INIT_ARRAY_SECTION_ASM_OP   \
385   "\t.section\t.init_array,\"aw\",@init_array"
386 #  define FINI_ARRAY_SECTION_ASM_OP   \
387   "\t.section\t.fini_array,\"aw\",@fini_array"
388 # endif
389 #else
390 # define TEXT_SECTION_ASM_OP          \
391   (TARGET_AS100_SYNTAX ? "\t.SECTION P,CODE" : "\t.section P,\"ax\"")
392
393 # define CTORS_SECTION_ASM_OP                         \
394   (TARGET_AS100_SYNTAX ? "\t.SECTION init_array,CODE" \
395    : "\t.section\t.init_array,\"aw\",@init_array")
396
397 # define DTORS_SECTION_ASM_OP                         \
398   (TARGET_AS100_SYNTAX ? "\t.SECTION fini_array,CODE" \
399    : "\t.section\t.fini_array,\"aw\",@fini_array")
400
401 # define INIT_ARRAY_SECTION_ASM_OP                    \
402   (TARGET_AS100_SYNTAX ? "\t.SECTION init_array,CODE" \
403    : "\t.section\t.init_array,\"aw\",@init_array")
404
405 # define FINI_ARRAY_SECTION_ASM_OP                    \
406   (TARGET_AS100_SYNTAX ? "\t.SECTION fini_array,CODE" \
407    : "\t.section\t.fini_array,\"aw\",@fini_array")
408 #endif
409
410 #define GLOBAL_ASM_OP           \
411   (TARGET_AS100_SYNTAX ? "\t.GLB\t" : "\t.global\t")
412 #define ASM_COMMENT_START       " ;"
413 #define ASM_APP_ON              ""
414 #define ASM_APP_OFF             ""
415 #define LOCAL_LABEL_PREFIX      "L"
416 #undef  USER_LABEL_PREFIX
417 #define USER_LABEL_PREFIX       "_"
418
419 #define ASM_OUTPUT_ALIGN(STREAM, LOG)           \
420   do                                            \
421     {                                           \
422       if ((LOG) == 0)                           \
423         break;                                  \
424       if (TARGET_AS100_SYNTAX)                  \
425         {                                       \
426           if ((LOG) >= 2)                       \
427             fprintf (STREAM, "\t.ALIGN 4\t; %d alignment actually requested\n", 1 << (LOG)); \
428           else                                  \
429             fprintf (STREAM, "\t.ALIGN 2\n");   \
430         }                                       \
431       else                                      \
432         fprintf (STREAM, "\t.balign %d\n", 1 << (LOG)); \
433     }                                           \
434   while (0)
435
436 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
437   fprintf (FILE, TARGET_AS100_SYNTAX ? "\t.LWORD L%d\n" : "\t.long .L%d\n", \
438            VALUE)
439
440 /* This is how to output an element of a case-vector that is relative.
441    Note: The local label referenced by the "3b" below is emitted by
442    the tablejump insn.  */
443
444 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
445   fprintf (FILE, TARGET_AS100_SYNTAX \
446            ? "\t.LWORD L%d - ?-\n" : "\t.long .L%d - 1b\n", VALUE)
447
448 #define ASM_OUTPUT_SIZE_DIRECTIVE(STREAM, NAME, SIZE)                   \
449   do                                                                    \
450     {                                                                   \
451       HOST_WIDE_INT size_ = (SIZE);                                     \
452                                                                         \
453       /* The as100 assembler does not have an equivalent of the SVR4    \
454          .size pseudo-op.  */                                           \
455       if (TARGET_AS100_SYNTAX)                                          \
456         break;                                                          \
457                                                                         \
458       fputs (SIZE_ASM_OP, STREAM);                                      \
459       assemble_name (STREAM, NAME);                                     \
460       fprintf (STREAM, ", " HOST_WIDE_INT_PRINT_DEC "\n", size_);       \
461     }                                                                   \
462   while (0)
463
464 #define ASM_OUTPUT_MEASURED_SIZE(STREAM, NAME)                          \
465   do                                                                    \
466     {                                                                   \
467       /* The as100 assembler does not have an equivalent of the SVR4    \
468          .size pseudo-op.  */                                           \
469       if (TARGET_AS100_SYNTAX)                                          \
470         break;                                                          \
471       fputs (SIZE_ASM_OP, STREAM);                                      \
472       assemble_name (STREAM, NAME);                                     \
473       fputs (", .-", STREAM);                                           \
474       assemble_name (STREAM, NAME);                                     \
475       putc ('\n', STREAM);                                              \
476     }                                                                   \
477   while (0)
478
479 #define ASM_OUTPUT_TYPE_DIRECTIVE(STREAM, NAME, TYPE)                   \
480   do                                                                    \
481     {                                                                   \
482       /* The as100 assembler does not have an equivalent of the SVR4    \
483          .size pseudo-op.  */                                           \
484       if (TARGET_AS100_SYNTAX)                                          \
485         break;                                                          \
486       fputs (TYPE_ASM_OP, STREAM);                                      \
487       assemble_name (STREAM, NAME);                                     \
488       fputs (", ", STREAM);                                             \
489       fprintf (STREAM, TYPE_OPERAND_FMT, TYPE);                         \
490       putc ('\n', STREAM);                                              \
491     }                                                                   \
492   while (0)
493
494 #undef  ASM_GENERATE_INTERNAL_LABEL
495 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM)         \
496   do                                                            \
497     {                                                           \
498       sprintf (LABEL, TARGET_AS100_SYNTAX ? "*%s%u" : "*.%s%u", \
499                PREFIX, (unsigned) (NUM));                       \
500     }                                                           \
501   while (0)
502
503 #undef  ASM_OUTPUT_EXTERNAL
504 #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)                   \
505   do                                                            \
506     {                                                           \
507       if (TARGET_AS100_SYNTAX)                                  \
508         targetm.asm_out.globalize_label (FILE, NAME);           \
509       default_elf_asm_output_external (FILE, DECL, NAME);       \
510     }                                                           \
511   while (0)
512
513 #undef  ASM_OUTPUT_ALIGNED_COMMON
514 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
515   do                                                                    \
516     {                                                                   \
517       if (TARGET_AS100_SYNTAX)                                          \
518         {                                                               \
519           fprintf ((FILE), "\t.GLB\t");                                 \
520           assemble_name ((FILE), (NAME));                               \
521           fprintf ((FILE), "\n");                                       \
522           assemble_name ((FILE), (NAME));                               \
523           switch ((ALIGN) / BITS_PER_UNIT)                              \
524             {                                                           \
525             case 4:                                                     \
526               fprintf ((FILE), ":\t.BLKL\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n",\
527                        (SIZE) / 4);                                     \
528               break;                                                    \
529             case 2:                                                     \
530               fprintf ((FILE), ":\t.BLKW\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n",\
531                        (SIZE) / 2);                                     \
532               break;                                                    \
533             default:                                                    \
534               fprintf ((FILE), ":\t.BLKB\t"HOST_WIDE_INT_PRINT_UNSIGNED"\n",\
535                        (SIZE));                                         \
536               break;                                                    \
537             }                                                           \
538         }                                                               \
539       else                                                              \
540         {                                                               \
541           fprintf ((FILE), "%s", COMMON_ASM_OP);                        \
542           assemble_name ((FILE), (NAME));                               \
543           fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n",      \
544                    (SIZE), (ALIGN) / BITS_PER_UNIT);                    \
545         }                                                               \
546     }                                                                   \
547   while (0)
548
549 #undef  SKIP_ASM_OP
550 #define SKIP_ASM_OP   (TARGET_AS100_SYNTAX ? "\t.BLKB\t" : "\t.zero\t")
551
552 #undef  ASM_OUTPUT_LIMITED_STRING
553 #define ASM_OUTPUT_LIMITED_STRING(FILE, STR)            \
554   do                                                    \
555     {                                                   \
556       const unsigned char *_limited_str =               \
557         (const unsigned char *) (STR);                  \
558       unsigned ch;                                      \
559                                                         \
560       fprintf ((FILE), TARGET_AS100_SYNTAX              \
561                ? "\t.BYTE\t\"" : "\t.string\t\"");      \
562                                                         \
563       for (; (ch = *_limited_str); _limited_str++)      \
564         {                                               \
565           int escape;                                   \
566                                                         \
567           switch (escape = ESCAPES[ch])                 \
568             {                                           \
569             case 0:                                     \
570               putc (ch, (FILE));                        \
571               break;                                    \
572             case 1:                                     \
573               fprintf ((FILE), "\\%03o", ch);           \
574               break;                                    \
575             default:                                    \
576               putc ('\\', (FILE));                      \
577               putc (escape, (FILE));                    \
578               break;                                    \
579             }                                           \
580         }                                               \
581                                                         \
582       fprintf ((FILE), TARGET_AS100_SYNTAX ? "\"\n\t.BYTE\t0\n" : "\"\n");\
583     }                                                   \
584   while (0)
585
586 #undef  IDENT_ASM_OP
587 #define IDENT_ASM_OP  (TARGET_AS100_SYNTAX \
588                        ? "\t.END\t; Built by: ": "\t.ident\t")
589
590 /* For PIC put jump tables into the text section so that the offsets that
591    they contain are always computed between two same-section symbols.  */
592 #define JUMP_TABLES_IN_TEXT_SECTION     (flag_pic)
593 \f
594 extern int rx_float_compare_mode;
595 \f
596 /* This is a version of REG_P that also returns TRUE for SUBREGs.  */
597 #define RX_REG_P(rtl) (REG_P (rtl) || GET_CODE (rtl) == SUBREG)
598
599 /* Like REG_P except that this macro is true for SET expressions.  */
600 #define SET_P(rtl)    (GET_CODE (rtl) == SET)
601 \f
602 /* The AS100 assembler does not support .leb128 and .uleb128, but
603    the compiler-build-time configure tests will have enabled their
604    use because GAS supports them.  So default to generating STABS
605    debug information instead of DWARF2 when generating AS100
606    compatible output.  */
607 #undef  PREFERRED_DEBUGGING_TYPE
608 #define PREFERRED_DEBUGGING_TYPE (TARGET_AS100_SYNTAX \
609                                   ? DBX_DEBUG : DWARF2_DEBUG)
610
611 #define INCOMING_FRAME_SP_OFFSET                4
612 #define ARG_POINTER_CFA_OFFSET(FNDECL)          4
613 #define FRAME_POINTER_CFA_OFFSET(FNDECL)        4
614 \f
615 #define TARGET_USE_FPU          (! TARGET_NO_USE_FPU)
616
617 /* This macro is used to decide when RX FPU instructions can be used.  */
618 #define ALLOW_RX_FPU_INSNS      (TARGET_USE_FPU)
619
620 #define BRANCH_COST(SPEED,PREDICT)       1
621 #define REGISTER_MOVE_COST(MODE,FROM,TO) 2
622
623 #define SELECT_CC_MODE(OP,X,Y)                                          \
624   (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CC_ZSmode :            \
625     (GET_CODE (X) == PLUS || GET_CODE (X) == MINUS ? CC_ZSCmode :       \
626     (GET_CODE (X) == ABS ? CC_ZSOmode :                                 \
627     (GET_CODE (X) == AND || GET_CODE (X) == NOT || GET_CODE (X) == IOR  \
628      || GET_CODE (X) == XOR || GET_CODE (X) == ROTATE                   \
629      || GET_CODE (X) == ROTATERT || GET_CODE (X) == ASHIFTRT            \
630      || GET_CODE (X) == LSHIFTRT || GET_CODE (X) == ASHIFT ? CC_ZSmode : \
631      CCmode))))