1 /* Target macros for the FRV port of GCC.
2 Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3 Contributed by Red Hat Inc.
5 This file is part of GCC.
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 2, or (at your
10 option) any later version.
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.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 /* Set up System V.4 (aka ELF) defaults. */
29 /* Frv general purpose macros. */
30 /* Align an address. */
31 #define ADDR_ALIGN(addr,align) (((addr) + (align) - 1) & ~((align) - 1))
33 /* Return true if a value is inside a range. */
34 #define IN_RANGE_P(VALUE, LOW, HIGH) \
35 ( (((HOST_WIDE_INT)(VALUE)) >= (HOST_WIDE_INT)(LOW)) \
36 && (((HOST_WIDE_INT)(VALUE)) <= ((HOST_WIDE_INT)(HIGH))))
39 /* Driver configuration. */
41 /* A C expression which determines whether the option `-CHAR' takes arguments.
42 The value should be the number of arguments that option takes-zero, for many
45 By default, this macro is defined to handle the standard options properly.
46 You need not define it unless you wish to add additional options which take
50 #undef SWITCH_TAKES_ARG
51 #define SWITCH_TAKES_ARG(CHAR) \
52 (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G')
54 /* A C expression which determines whether the option `-NAME' takes arguments.
55 The value should be the number of arguments that option takes-zero, for many
56 options. This macro rather than `SWITCH_TAKES_ARG' is used for
57 multi-character option names.
59 By default, this macro is defined as `DEFAULT_WORD_SWITCH_TAKES_ARG', which
60 handles the standard options properly. You need not define
61 `WORD_SWITCH_TAKES_ARG' unless you wish to add additional options which take
62 arguments. Any redefinition should call `DEFAULT_WORD_SWITCH_TAKES_ARG' and
63 then check for additional options.
66 #undef WORD_SWITCH_TAKES_ARG
68 /* A C string constant that tells the GNU CC driver program options to pass to
69 the assembler. It can also specify how to translate options you give to GNU
70 CC into options for GNU CC to pass to the assembler. See the file `sun3.h'
71 for an example of this.
73 Do not define this macro if it does not need to do anything.
78 %{G*} %{v} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
83 %{msoft-float} %{mhard-float} \
84 %{mdword} %{mno-dword} \
85 %{mdouble} %{mno-double} \
86 %{mmedia} %{mno-media} \
87 %{mmuladd} %{mno-muladd} \
88 %{mpack} %{mno-pack} \
89 %{fpic: -mpic} %{fPIC: -mPIC} %{mlibrary-pic}}"
91 /* Another C string constant used much like `LINK_SPEC'. The difference
92 between the two is that `STARTFILE_SPEC' is used at the very beginning of
93 the command given to the linker.
95 If this macro is not defined, a default is provided that loads the standard
96 C startup file from the usual place. See `gcc.c'.
100 #define STARTFILE_SPEC "crt0%O%s frvbegin%O%s"
102 /* Another C string constant used much like `LINK_SPEC'. The difference
103 between the two is that `ENDFILE_SPEC' is used at the very end of the
104 command given to the linker.
106 Do not define this macro if it does not need to do anything.
108 Defined in svr4.h. */
110 #define ENDFILE_SPEC "frvend%O%s"
112 /* A C string constant that tells the GNU CC driver program options to pass to
113 CPP. It can also specify how to translate options you give to GNU CC into
114 options for GNU CC to pass to the CPP.
116 Do not define this macro if it does not need to do anything. */
118 /* The idea here is to use the -mcpu option to define macros based on the
119 processor's features, using the features of the default processor if
120 no -mcpu option is given. These macros can then be overridden by
123 %{mcpu=frv: %(cpp_frv)} \
124 %{mcpu=fr500: %(cpp_fr500)} \
125 %{mcpu=fr400: %(cpp_fr400)} \
126 %{mcpu=fr300: %(cpp_simple)} \
127 %{mcpu=tomcat: %(cpp_fr500)} \
128 %{mcpu=simple: %(cpp_simple)} \
129 %{!mcpu*: %(cpp_cpu_default)} \
130 %{mno-media: -D__FRV_ACC__=0 %{msoft-float: -D__FRV_FPR__=0}} \
131 %{mhard-float: -D__FRV_HARD_FLOAT__} \
132 %{msoft-float: -U__FRV_HARD_FLOAT__} \
133 %{mgpr-32: -U__FRV_GPR__ -D__FRV_GPR__=32} \
134 %{mgpr-64: -U__FRV_GPR__ -D__FRV_GPR__=64} \
135 %{mfpr-32: -U__FRV_FPR__ -D__FRV_FPR__=32} \
136 %{mfpr-64: -U__FRV_FPR__ -D__FRV_FPR__=64} \
137 %{macc-4: -U__FRV_ACC__ -D__FRV_ACC__=4} \
138 %{macc-8: -U__FRV_ACC__ -D__FRV_ACC__=8} \
139 %{mdword: -D__FRV_DWORD__} \
140 %{mno-dword: -U__FRV_DWORD__} \
141 %{mno-pack: -U__FRV_VLIW__} \
142 %{fleading-underscore: -D__FRV_UNDERSCORE__}"
144 /* CPU defaults. Each CPU has its own CPP spec that defines the default
145 macros for that CPU. Each CPU also has its own default target mask.
147 CPU GPRs FPRs ACCs FPU MulAdd ldd/std Issue rate
148 --- ---- ---- ---- --- ------ ------- ----------
149 FRV 64 64 8 double yes yes 4
150 FR500 64 64 8 single no yes 4
151 FR400 32 32 4 none no yes 2
152 Simple 32 0 0 none no no 1 */
155 #define CPP_FRV_SPEC "\
159 -D__FRV_HARD_FLOAT__ \
163 #define CPP_FR500_SPEC "\
167 -D__FRV_HARD_FLOAT__ \
171 #define CPP_FR400_SPEC "\
178 #define CPP_SIMPLE_SPEC "\
182 %{mmedia: -D__FRV_ACC__=8} \
183 %{mhard-float|mmedia: -D__FRV_FPR__=64}"
185 #define MASK_DEFAULT_FRV \
192 #define MASK_DEFAULT_FR500 \
193 (MASK_MEDIA | MASK_DWORD | MASK_PACK)
195 #define MASK_DEFAULT_FR400 \
204 #define MASK_DEFAULT_SIMPLE \
205 (MASK_GPR_32 | MASK_SOFT_FLOAT)
207 /* A C string constant that tells the GNU CC driver program options to pass to
208 `cc1'. It can also specify how to translate options you give to GNU CC into
209 options for GNU CC to pass to the `cc1'.
211 Do not define this macro if it does not need to do anything. */
212 /* For ABI compliance, we need to put bss data into the normal data section. */
213 #define CC1_SPEC "%{G*}"
215 /* A C string constant that tells the GNU CC driver program options to pass to
216 the linker. It can also specify how to translate options you give to GNU CC
217 into options for GNU CC to pass to the linker.
219 Do not define this macro if it does not need to do anything.
221 Defined in svr4.h. */
222 /* Override the svr4.h version with one that dispenses without the svr4
223 shared library options, notably -G. */
228 %{static:-dn -Bstatic} \
229 %{shared:-Bdynamic} \
230 %{symbolic:-Bsymbolic} \
235 /* Another C string constant used much like `LINK_SPEC'. The difference
236 between the two is that `LIB_SPEC' is used at the end of the command given
239 If this macro is not defined, a default is provided that loads the standard
240 C library from the usual place. See `gcc.c'.
242 Defined in svr4.h. */
245 #define LIB_SPEC "--start-group -lc -lsim --end-group"
247 /* This macro defines names of additional specifications to put in the specs
248 that can be used in various specifications like CC1_SPEC. Its definition
249 is an initializer with a subgrouping for each command option.
251 Each subgrouping contains a string constant, that defines the
252 specification name, and a string constant that used by the GNU CC driver
255 Do not define this macro if it does not need to do anything. */
257 #ifndef SUBTARGET_EXTRA_SPECS
258 #define SUBTARGET_EXTRA_SPECS
261 #define EXTRA_SPECS \
262 { "cpp_frv", CPP_FRV_SPEC }, \
263 { "cpp_fr500", CPP_FR500_SPEC }, \
264 { "cpp_fr400", CPP_FR400_SPEC }, \
265 { "cpp_simple", CPP_SIMPLE_SPEC }, \
266 { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \
267 SUBTARGET_EXTRA_SPECS
269 #ifndef CPP_CPU_DEFAULT_SPEC
270 #define CPP_CPU_DEFAULT_SPEC CPP_FR500_SPEC
271 #define CPU_TYPE FRV_CPU_FR500
274 /* Allow us to easily change the default for -malloc-cc. */
275 #ifndef DEFAULT_NO_ALLOC_CC
276 #define MASK_DEFAULT_ALLOC_CC MASK_ALLOC_CC
278 #define MASK_DEFAULT_ALLOC_CC 0
281 /* Run-time target specifications */
283 #define TARGET_CPU_CPP_BUILTINS() \
286 builtin_define ("__frv__"); \
287 builtin_assert ("machine=frv"); \
292 /* This declaration should be present. */
293 extern int target_flags;
295 /* This series of macros is to allow compiler command arguments to enable or
296 disable the use of optional features of the target machine. For example,
297 one machine description serves both the 68000 and the 68020; a command
298 argument tells the compiler whether it should use 68020-only instructions or
299 not. This command argument works by means of a macro `TARGET_68020' that
300 tests a bit in `target_flags'.
302 Define a macro `TARGET_FEATURENAME' for each such option. Its definition
303 should test a bit in `target_flags'; for example:
305 #define TARGET_68020 (target_flags & 1)
307 One place where these macros are used is in the condition-expressions of
308 instruction patterns. Note how `TARGET_68020' appears frequently in the
309 68000 machine description file, `m68k.md'. Another place they are used is
310 in the definitions of the other macros in the `MACHINE.h' file. */
312 #define MASK_GPR_32 0x00000001 /* Limit gprs to 32 registers */
313 #define MASK_FPR_32 0x00000002 /* Limit fprs to 32 registers */
314 #define MASK_SOFT_FLOAT 0x00000004 /* Use software floating point */
315 #define MASK_ALLOC_CC 0x00000008 /* Dynamically allocate icc/fcc's */
316 #define MASK_DWORD 0x00000010 /* Change ABi to allow dbl word insns*/
317 #define MASK_DOUBLE 0x00000020 /* Use double precision instructions */
318 #define MASK_MEDIA 0x00000040 /* Use media instructions */
319 #define MASK_MULADD 0x00000080 /* Use multiply add/subtract insns */
320 #define MASK_LIBPIC 0x00000100 /* -fpic that can be linked w/o pic */
321 #define MASK_ACC_4 0x00000200 /* Only use four media accumulators */
322 #define MASK_PACK 0x00000400 /* Set to enable packed output */
324 /* put debug masks up high */
325 #define MASK_DEBUG_ARG 0x40000000 /* debug argument handling */
326 #define MASK_DEBUG_ADDR 0x20000000 /* debug go_if_legitimate_address */
327 #define MASK_DEBUG_STACK 0x10000000 /* debug stack frame */
328 #define MASK_DEBUG 0x08000000 /* general debugging switch */
329 #define MASK_DEBUG_LOC 0x04000000 /* optimize line # table */
330 #define MASK_DEBUG_COND_EXEC 0x02000000 /* debug cond exec code */
331 #define MASK_NO_COND_MOVE 0x01000000 /* disable conditional moves */
332 #define MASK_NO_SCC 0x00800000 /* disable set conditional codes */
333 #define MASK_NO_COND_EXEC 0x00400000 /* disable conditional execution */
334 #define MASK_NO_VLIW_BRANCH 0x00200000 /* disable repacking branches */
335 #define MASK_NO_MULTI_CE 0x00100000 /* disable multi-level cond exec */
336 #define MASK_NO_NESTED_CE 0x00080000 /* disable nested cond exec */
338 #define MASK_DEFAULT MASK_DEFAULT_ALLOC_CC
340 #define TARGET_GPR_32 ((target_flags & MASK_GPR_32) != 0)
341 #define TARGET_FPR_32 ((target_flags & MASK_FPR_32) != 0)
342 #define TARGET_SOFT_FLOAT ((target_flags & MASK_SOFT_FLOAT) != 0)
343 #define TARGET_ALLOC_CC ((target_flags & MASK_ALLOC_CC) != 0)
344 #define TARGET_DWORD ((target_flags & MASK_DWORD) != 0)
345 #define TARGET_DOUBLE ((target_flags & MASK_DOUBLE) != 0)
346 #define TARGET_MEDIA ((target_flags & MASK_MEDIA) != 0)
347 #define TARGET_MULADD ((target_flags & MASK_MULADD) != 0)
348 #define TARGET_LIBPIC ((target_flags & MASK_LIBPIC) != 0)
349 #define TARGET_ACC_4 ((target_flags & MASK_ACC_4) != 0)
350 #define TARGET_DEBUG_ARG ((target_flags & MASK_DEBUG_ARG) != 0)
351 #define TARGET_DEBUG_ADDR ((target_flags & MASK_DEBUG_ADDR) != 0)
352 #define TARGET_DEBUG_STACK ((target_flags & MASK_DEBUG_STACK) != 0)
353 #define TARGET_DEBUG ((target_flags & MASK_DEBUG) != 0)
354 #define TARGET_DEBUG_LOC ((target_flags & MASK_DEBUG_LOC) != 0)
355 #define TARGET_DEBUG_COND_EXEC ((target_flags & MASK_DEBUG_COND_EXEC) != 0)
356 #define TARGET_NO_COND_MOVE ((target_flags & MASK_NO_COND_MOVE) != 0)
357 #define TARGET_NO_SCC ((target_flags & MASK_NO_SCC) != 0)
358 #define TARGET_NO_COND_EXEC ((target_flags & MASK_NO_COND_EXEC) != 0)
359 #define TARGET_NO_VLIW_BRANCH ((target_flags & MASK_NO_VLIW_BRANCH) != 0)
360 #define TARGET_NO_MULTI_CE ((target_flags & MASK_NO_MULTI_CE) != 0)
361 #define TARGET_NO_NESTED_CE ((target_flags & MASK_NO_NESTED_CE) != 0)
362 #define TARGET_PACK ((target_flags & MASK_PACK) != 0)
364 #define TARGET_GPR_64 (! TARGET_GPR_32)
365 #define TARGET_FPR_64 (! TARGET_FPR_32)
366 #define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT)
367 #define TARGET_FIXED_CC (! TARGET_ALLOC_CC)
368 #define TARGET_COND_MOVE (! TARGET_NO_COND_MOVE)
369 #define TARGET_SCC (! TARGET_NO_SCC)
370 #define TARGET_COND_EXEC (! TARGET_NO_COND_EXEC)
371 #define TARGET_VLIW_BRANCH (! TARGET_NO_VLIW_BRANCH)
372 #define TARGET_MULTI_CE (! TARGET_NO_MULTI_CE)
373 #define TARGET_NESTED_CE (! TARGET_NO_NESTED_CE)
374 #define TARGET_ACC_8 (! TARGET_ACC_4)
376 #define TARGET_HAS_FPRS (TARGET_HARD_FLOAT || TARGET_MEDIA)
378 #define NUM_GPRS (TARGET_GPR_32? 32 : 64)
379 #define NUM_FPRS (!TARGET_HAS_FPRS? 0 : TARGET_FPR_32? 32 : 64)
380 #define NUM_ACCS (!TARGET_MEDIA? 0 : TARGET_ACC_4? 4 : 8)
382 /* Macros to identify the blend of media instructions available. Revision 1
383 is the one found on the FR500. Revision 2 includes the changes made for
386 Treat the generic processor as a revision 1 machine for now, for
387 compatibility with earlier releases. */
389 #define TARGET_MEDIA_REV1 \
391 && (frv_cpu_type == FRV_CPU_GENERIC \
392 || frv_cpu_type == FRV_CPU_FR500))
394 #define TARGET_MEDIA_REV2 \
395 (TARGET_MEDIA && frv_cpu_type == FRV_CPU_FR400)
397 /* This macro defines names of command options to set and clear bits in
398 `target_flags'. Its definition is an initializer with a subgrouping for
401 Each subgrouping contains a string constant, that defines the option name,
402 a number, which contains the bits to set in `target_flags', and an optional
403 second string which is the textual description that will be displayed when
404 the user passes --help on the command line. If the number entry is negative
405 then the specified bits will be cleared instead of being set. If the second
406 string entry is present but empty, then no help information will be displayed
407 for that option, but it will not count as an undocumented option. The actual
408 option name, asseen on the command line is made by appending `-m' to the
411 One of the subgroupings should have a null string. The number in this
412 grouping is the default value for `target_flags'. Any target options act
413 starting with that value.
415 Here is an example which defines `-m68000' and `-m68020' with opposite
416 meanings, and picks the latter as the default:
418 #define TARGET_SWITCHES \
419 { { "68020", 1, ""}, \
420 { "68000", -1, "Compile for the m68000"}, \
423 This declaration must be present. */
425 #define TARGET_SWITCHES \
426 {{ "gpr-32", MASK_GPR_32, "Only use 32 gprs"}, \
427 { "gpr-64", -MASK_GPR_32, "Use 64 gprs"}, \
428 { "fpr-32", MASK_FPR_32, "Only use 32 fprs"}, \
429 { "fpr-64", -MASK_FPR_32, "Use 64 fprs"}, \
430 { "hard-float", -MASK_SOFT_FLOAT, "Use hardware floating point" },\
431 { "soft-float", MASK_SOFT_FLOAT, "Use software floating point" },\
432 { "alloc-cc", MASK_ALLOC_CC, "Dynamically allocate cc's" }, \
433 { "fixed-cc", -MASK_ALLOC_CC, "Just use icc0/fcc0" }, \
434 { "dword", MASK_DWORD, "Change ABI to allow double word insns" }, \
435 { "no-dword", -MASK_DWORD, "Do not use double word insns" }, \
436 { "double", MASK_DOUBLE, "Use fp double instructions" }, \
437 { "no-double", -MASK_DOUBLE, "Do not use fp double insns" }, \
438 { "media", MASK_MEDIA, "Use media instructions" }, \
439 { "no-media", -MASK_MEDIA, "Do not use media insns" }, \
440 { "muladd", MASK_MULADD, "Use multiply add/subtract instructions" }, \
441 { "no-muladd", -MASK_MULADD, "Do not use multiply add/subtract insns" }, \
442 { "library-pic", MASK_LIBPIC, "PIC support for building libraries" }, \
443 { "acc-4", MASK_ACC_4, "Use 4 media accumulators" }, \
444 { "acc-8", -MASK_ACC_4, "Use 8 media accumulators" }, \
445 { "pack", MASK_PACK, "Pack VLIW instructions" }, \
446 { "no-pack", -MASK_PACK, "Do not pack VLIW instructions" }, \
447 { "no-eflags", 0, "Do not mark ABI switches in e_flags" }, \
448 { "debug-arg", MASK_DEBUG_ARG, "Internal debug switch" }, \
449 { "debug-addr", MASK_DEBUG_ADDR, "Internal debug switch" }, \
450 { "debug-stack", MASK_DEBUG_STACK, "Internal debug switch" }, \
451 { "debug", MASK_DEBUG, "Internal debug switch" }, \
452 { "debug-cond-exec", MASK_DEBUG_COND_EXEC, "Internal debug switch" }, \
453 { "debug-loc", MASK_DEBUG_LOC, "Internal debug switch" }, \
454 { "cond-move", -MASK_NO_COND_MOVE, "Enable conditional moves" }, \
455 { "no-cond-move", MASK_NO_COND_MOVE, "Disable conditional moves" }, \
456 { "scc", -MASK_NO_SCC, "Enable setting gprs to the result of comparisons" }, \
457 { "no-scc", MASK_NO_SCC, "Disable setting gprs to the result of comparisons" }, \
458 { "cond-exec", -MASK_NO_COND_EXEC, "Enable conditional execution other than moves/scc" }, \
459 { "no-cond-exec", MASK_NO_COND_EXEC, "Disable conditional execution other than moves/scc" }, \
460 { "vliw-branch", -MASK_NO_VLIW_BRANCH, "Run pass to pack branches into VLIW insns" }, \
461 { "no-vliw-branch", MASK_NO_VLIW_BRANCH, "Do not run pass to pack branches into VLIW insns" }, \
462 { "multi-cond-exec", -MASK_NO_MULTI_CE, "Disable optimizing &&/|| in conditional execution" }, \
463 { "no-multi-cond-exec", MASK_NO_MULTI_CE, "Enable optimizing &&/|| in conditional execution" }, \
464 { "nested-cond-exec", -MASK_NO_NESTED_CE, "Enable nested conditional execution optimizations" }, \
465 { "no-nested-cond-exec" ,MASK_NO_NESTED_CE, "Disable nested conditional execution optimizations" }, \
466 { "tomcat-stats", 0, "Cause gas to print tomcat statistics" }, \
467 { "", MASK_DEFAULT, "" }} \
469 /* This macro is similar to `TARGET_SWITCHES' but defines names of command
470 options that have values. Its definition is an initializer with a
471 subgrouping for each command option.
473 Each subgrouping contains a string constant, that defines the fixed part of
474 the option name, the address of a variable, and an optional description string.
475 The variable, of type `char *', is set to the text following the fixed part of
476 the option as it is specified on the command line. The actual option name is
477 made by appending `-m' to the specified name.
479 Here is an example which defines `-mshort-data-NUMBER'. If the given option
480 is `-mshort-data-512', the variable `m88k_short_data' will be set to the
483 extern char *m88k_short_data;
484 #define TARGET_OPTIONS \
485 { { "short-data-", & m88k_short_data, \
486 "Specify the size of the short data section" } }
488 This declaration is optional. */
489 #define TARGET_OPTIONS \
491 { "cpu=", &frv_cpu_string, "Set cpu type", 0}, \
492 { "branch-cost=", &frv_branch_cost_string, "Internal debug switch", 0}, \
493 { "cond-exec-insns=", &frv_condexec_insns_str, "Internal debug switch", 0}, \
494 { "cond-exec-temps=", &frv_condexec_temps_str, "Internal debug switch", 0}, \
495 { "sched-lookahead=", &frv_sched_lookahead_str,"Internal debug switch", 0}, \
498 /* This macro is a C statement to print on `stderr' a string describing the
499 particular machine description choice. Every machine description should
500 define `TARGET_VERSION'. For example:
503 #define TARGET_VERSION \
504 fprintf (stderr, " (68k, Motorola syntax)");
506 #define TARGET_VERSION \
507 fprintf (stderr, " (68k, MIT syntax)");
509 #define TARGET_VERSION fprintf (stderr, _(" (frv)"))
511 /* Sometimes certain combinations of command options do not make sense on a
512 particular target machine. You can define a macro `OVERRIDE_OPTIONS' to
513 take account of this. This macro, if defined, is executed once just after
514 all the command options have been parsed.
516 Don't use this macro to turn on various extra optimizations for `-O'. That
517 is what `OPTIMIZATION_OPTIONS' is for. */
519 #define OVERRIDE_OPTIONS frv_override_options ()
521 /* Some machines may desire to change what optimizations are performed for
522 various optimization levels. This macro, if defined, is executed once just
523 after the optimization level is determined and before the remainder of the
524 command options have been parsed. Values set in this macro are used as the
525 default values for the other command line options.
527 LEVEL is the optimization level specified; 2 if `-O2' is specified, 1 if
528 `-O' is specified, and 0 if neither is specified.
530 SIZE is nonzero if `-Os' is specified, 0 otherwise.
532 You should not use this macro to change options that are not
533 machine-specific. These should uniformly selected by the same optimization
534 level on all supported machines. Use this macro to enable machbine-specific
537 *Do not examine `write_symbols' in this macro!* The debugging options are
538 *not supposed to alter the generated code. */
539 #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) frv_optimization_options (LEVEL, SIZE)
542 /* Define this macro if debugging can be performed even without a frame
543 pointer. If this macro is defined, GNU CC will turn on the
544 `-fomit-frame-pointer' option whenever `-O' is specified. */
545 /* Frv needs a specific frame layout that includes the frame pointer */
547 #define CAN_DEBUG_WITHOUT_FP
550 /* Small Data Area Support. */
551 /* Maximum size of variables that go in .sdata/.sbss.
552 The -msdata=foo switch also controls how small variables are handled. */
553 #ifndef SDATA_DEFAULT_SIZE
554 #define SDATA_DEFAULT_SIZE 8
560 /* Define this macro to have the value 1 if the most significant bit in a byte
561 has the lowest number; otherwise define it to have the value zero. This
562 means that bit-field instructions count from the most significant bit. If
563 the machine has no bit-field instructions, then this must still be defined,
564 but it doesn't matter which value it is defined to. This macro need not be
567 This macro does not affect the way structure fields are packed into bytes or
568 words; that is controlled by `BYTES_BIG_ENDIAN'. */
569 #define BITS_BIG_ENDIAN 1
571 /* Define this macro to have the value 1 if the most significant byte in a word
572 has the lowest number. This macro need not be a constant. */
573 #define BYTES_BIG_ENDIAN 1
575 /* Define this macro to have the value 1 if, in a multiword object, the most
576 significant word has the lowest number. This applies to both memory
577 locations and registers; GNU CC fundamentally assumes that the order of
578 words in memory is the same as the order in registers. This macro need not
580 #define WORDS_BIG_ENDIAN 1
582 /* Number of storage units in a word; normally 4. */
583 #define UNITS_PER_WORD 4
585 /* A macro to update MODE and UNSIGNEDP when an object whose type is TYPE and
586 which has the specified mode and signedness is to be stored in a register.
587 This macro is only called when TYPE is a scalar type.
589 On most RISC machines, which only have operations that operate on a full
590 register, define this macro to set M to `word_mode' if M is an integer mode
591 narrower than `BITS_PER_WORD'. In most cases, only integer modes should be
592 widened because wider-precision floating-point operations are usually more
593 expensive than their narrower counterparts.
595 For most machines, the macro definition does not change UNSIGNEDP. However,
596 some machines, have instructions that preferentially handle either signed or
597 unsigned quantities of certain modes. For example, on the DEC Alpha, 32-bit
598 loads from memory and 32-bit add instructions sign-extend the result to 64
599 bits. On such machines, set UNSIGNEDP according to which kind of extension
602 Do not define this macro if it would never modify MODE. */
603 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \
606 if (GET_MODE_CLASS (MODE) == MODE_INT \
607 && GET_MODE_SIZE (MODE) < 4) \
612 /* Normal alignment required for function parameters on the stack, in bits.
613 All stack parameters receive at least this much alignment regardless of data
614 type. On most machines, this is the same as the size of an integer. */
615 #define PARM_BOUNDARY 32
617 /* Define this macro if you wish to preserve a certain alignment for the stack
618 pointer. The definition is a C expression for the desired alignment
621 If `PUSH_ROUNDING' is not defined, the stack will always be aligned to the
622 specified boundary. If `PUSH_ROUNDING' is defined and specifies a less
623 strict alignment than `STACK_BOUNDARY', the stack may be momentarily
624 unaligned while pushing arguments. */
625 #define STACK_BOUNDARY 64
627 /* Alignment required for a function entry point, in bits. */
628 #define FUNCTION_BOUNDARY 128
630 /* Biggest alignment that any data type can require on this machine,
632 #define BIGGEST_ALIGNMENT 64
634 /* @@@ A hack, needed because libobjc wants to use ADJUST_FIELD_ALIGN for
636 #ifdef IN_TARGET_LIBS
637 #define BIGGEST_FIELD_ALIGNMENT 64
639 /* An expression for the alignment of a structure field FIELD if the
640 alignment computed in the usual way is COMPUTED. GNU CC uses this
641 value instead of the value in `BIGGEST_ALIGNMENT' or
642 `BIGGEST_FIELD_ALIGNMENT', if defined, for structure fields only. */
643 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
644 frv_adjust_field_align (FIELD, COMPUTED)
647 /* If defined, a C expression to compute the alignment for a static variable.
648 TYPE is the data type, and ALIGN is the alignment that the object
649 would ordinarily have. The value of this macro is used instead of that
650 alignment to align the object.
652 If this macro is not defined, then ALIGN is used.
654 One use of this macro is to increase alignment of medium-size data to make
655 it all fit in fewer cache lines. Another is to cause character arrays to be
656 word-aligned so that `strcpy' calls that copy constants to character arrays
657 can be done inline. */
658 #define DATA_ALIGNMENT(TYPE, ALIGN) \
659 (TREE_CODE (TYPE) == ARRAY_TYPE \
660 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
661 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
663 /* If defined, a C expression to compute the alignment given to a constant that
664 is being placed in memory. CONSTANT is the constant and ALIGN is the
665 alignment that the object would ordinarily have. The value of this macro is
666 used instead of that alignment to align the object.
668 If this macro is not defined, then ALIGN is used.
670 The typical use of this macro is to increase alignment for string constants
671 to be word aligned so that `strcpy' calls that copy constants can be done
673 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
674 (TREE_CODE (EXP) == STRING_CST \
675 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
677 /* Define this macro to be the value 1 if instructions will fail to work if
678 given data not on the nominal alignment. If instructions will merely go
679 slower in that case, define this macro as 0. */
680 #define STRICT_ALIGNMENT 1
682 /* Define this if you wish to imitate the way many other C compilers handle
683 alignment of bitfields and the structures that contain them.
685 The behavior is that the type written for a bit-field (`int', `short', or
686 other integer type) imposes an alignment for the entire structure, as if the
687 structure really did contain an ordinary field of that type. In addition,
688 the bit-field is placed within the structure so that it would fit within such
689 a field, not crossing a boundary for it.
691 Thus, on most machines, a bit-field whose type is written as `int' would not
692 cross a four-byte boundary, and would force four-byte alignment for the
693 whole structure. (The alignment used may not be four bytes; it is
694 controlled by the other alignment parameters.)
696 If the macro is defined, its definition should be a C expression; a nonzero
697 value for the expression enables this behavior.
699 Note that if this macro is not defined, or its value is zero, some bitfields
700 may cross more than one alignment boundary. The compiler can support such
701 references if there are `insv', `extv', and `extzv' insns that can directly
704 The other known way of making bitfields work is to define
705 `STRUCTURE_SIZE_BOUNDARY' as large as `BIGGEST_ALIGNMENT'. Then every
706 structure can be accessed with fullwords.
708 Unless the machine has bit-field instructions or you define
709 `STRUCTURE_SIZE_BOUNDARY' that way, you must define
710 `PCC_BITFIELD_TYPE_MATTERS' to have a nonzero value.
712 If your aim is to make GNU CC use the same conventions for laying out
713 bitfields as are used by another compiler, here is how to investigate what
714 the other compiler does. Compile and run this program:
732 printf ("Size of foo1 is %d\n",
733 sizeof (struct foo1));
734 printf ("Size of foo2 is %d\n",
735 sizeof (struct foo2));
739 If this prints 2 and 5, then the compiler's behavior is what you would get
740 from `PCC_BITFIELD_TYPE_MATTERS'.
742 Defined in svr4.h. */
743 #define PCC_BITFIELD_TYPE_MATTERS 1
746 /* Layout of Source Language Data Types. */
748 #define CHAR_TYPE_SIZE 8
749 #define SHORT_TYPE_SIZE 16
750 #define INT_TYPE_SIZE 32
751 #define LONG_TYPE_SIZE 32
752 #define LONG_LONG_TYPE_SIZE 64
753 #define FLOAT_TYPE_SIZE 32
754 #define DOUBLE_TYPE_SIZE 64
755 #define LONG_DOUBLE_TYPE_SIZE 64
757 /* An expression whose value is 1 or 0, according to whether the type `char'
758 should be signed or unsigned by default. The user can always override this
759 default with the options `-fsigned-char' and `-funsigned-char'. */
760 #define DEFAULT_SIGNED_CHAR 1
763 /* General purpose registers. */
764 #define GPR_FIRST 0 /* First gpr */
765 #define GPR_LAST (GPR_FIRST + 63) /* Last gpr */
766 #define GPR_R0 GPR_FIRST /* R0, constant 0 */
767 #define GPR_FP (GPR_FIRST + 2) /* Frame pointer */
768 #define GPR_SP (GPR_FIRST + 1) /* Stack pointer */
769 /* small data register */
770 #define SDA_BASE_REG ((unsigned)(flag_pic ? PIC_REGNO : (GPR_FIRST+16)))
771 #define PIC_REGNO (GPR_FIRST + 17) /* PIC register */
773 #define FPR_FIRST 64 /* First FP reg */
774 #define FPR_LAST 127 /* Last FP reg */
776 #define DEFAULT_CONDEXEC_TEMPS 4 /* reserve 4 regs by default */
777 #define GPR_TEMP_NUM frv_condexec_temps /* # gprs to reserve for temps */
779 /* We reserve the last CR and CCR in each category to be used as a reload
780 register to reload the CR/CCR registers. This is a kludge. */
781 #define CC_FIRST 128 /* First ICC/FCC reg */
782 #define CC_LAST 135 /* Last ICC/FCC reg */
783 #define ICC_FIRST (CC_FIRST + 4) /* First ICC reg */
784 #define ICC_LAST (CC_FIRST + 7) /* Last ICC reg */
785 #define ICC_TEMP (CC_FIRST + 7) /* Temporary ICC reg */
786 #define FCC_FIRST (CC_FIRST) /* First FCC reg */
787 #define FCC_LAST (CC_FIRST + 3) /* Last FCC reg */
789 /* Amount to shift a value to locate a ICC or FCC register in the CCR
790 register and shift it to the bottom 4 bits. */
791 #define CC_SHIFT_RIGHT(REGNO) (((REGNO) - CC_FIRST) << 2)
793 /* Mask to isolate a single ICC/FCC value. */
796 /* Masks to isolate the various bits in an ICC field. */
797 #define ICC_MASK_N 0x8 /* negative */
798 #define ICC_MASK_Z 0x4 /* zero */
799 #define ICC_MASK_V 0x2 /* overflow */
800 #define ICC_MASK_C 0x1 /* carry */
802 /* Mask to isolate the N/Z flags in an ICC. */
803 #define ICC_MASK_NZ (ICC_MASK_N | ICC_MASK_Z)
805 /* Mask to isolate the Z/C flags in an ICC. */
806 #define ICC_MASK_ZC (ICC_MASK_Z | ICC_MASK_C)
808 /* Masks to isolate the various bits in a FCC field. */
809 #define FCC_MASK_E 0x8 /* equal */
810 #define FCC_MASK_L 0x4 /* less than */
811 #define FCC_MASK_G 0x2 /* greater than */
812 #define FCC_MASK_U 0x1 /* unordered */
814 /* For CCR registers, the machine wants CR4..CR7 to be used for integer
815 code and CR0..CR3 to be used for floating point. */
816 #define CR_FIRST 136 /* First CCR */
817 #define CR_LAST 143 /* Last CCR */
818 #define CR_NUM (CR_LAST-CR_FIRST+1) /* # of CCRs (8) */
819 #define ICR_FIRST (CR_FIRST + 4) /* First integer CCR */
820 #define ICR_LAST (CR_FIRST + 7) /* Last integer CCR */
821 #define ICR_TEMP ICR_LAST /* Temp integer CCR */
822 #define FCR_FIRST (CR_FIRST + 0) /* First float CCR */
823 #define FCR_LAST (CR_FIRST + 3) /* Last float CCR */
825 /* Amount to shift a value to locate a CR register in the CCCR special purpose
826 register and shift it to the bottom 2 bits. */
827 #define CR_SHIFT_RIGHT(REGNO) (((REGNO) - CR_FIRST) << 1)
829 /* Mask to isolate a single CR value. */
832 #define ACC_FIRST 144 /* First acc register */
833 #define ACC_LAST 151 /* Last acc register */
835 #define ACCG_FIRST 152 /* First accg register */
836 #define ACCG_LAST 159 /* Last accg register */
838 #define AP_FIRST 160 /* fake argument pointer */
840 #define SPR_FIRST 161
842 #define LR_REGNO (SPR_FIRST)
843 #define LCR_REGNO (SPR_FIRST + 1)
845 #define GPR_P(R) IN_RANGE_P (R, GPR_FIRST, GPR_LAST)
846 #define GPR_OR_AP_P(R) (GPR_P (R) || (R) == ARG_POINTER_REGNUM)
847 #define FPR_P(R) IN_RANGE_P (R, FPR_FIRST, FPR_LAST)
848 #define CC_P(R) IN_RANGE_P (R, CC_FIRST, CC_LAST)
849 #define ICC_P(R) IN_RANGE_P (R, ICC_FIRST, ICC_LAST)
850 #define FCC_P(R) IN_RANGE_P (R, FCC_FIRST, FCC_LAST)
851 #define CR_P(R) IN_RANGE_P (R, CR_FIRST, CR_LAST)
852 #define ICR_P(R) IN_RANGE_P (R, ICR_FIRST, ICR_LAST)
853 #define FCR_P(R) IN_RANGE_P (R, FCR_FIRST, FCR_LAST)
854 #define ACC_P(R) IN_RANGE_P (R, ACC_FIRST, ACC_LAST)
855 #define ACCG_P(R) IN_RANGE_P (R, ACCG_FIRST, ACCG_LAST)
856 #define SPR_P(R) IN_RANGE_P (R, SPR_FIRST, SPR_LAST)
858 #define GPR_OR_PSEUDO_P(R) (GPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
859 #define FPR_OR_PSEUDO_P(R) (FPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
860 #define GPR_AP_OR_PSEUDO_P(R) (GPR_OR_AP_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
861 #define CC_OR_PSEUDO_P(R) (CC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
862 #define ICC_OR_PSEUDO_P(R) (ICC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
863 #define FCC_OR_PSEUDO_P(R) (FCC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
864 #define CR_OR_PSEUDO_P(R) (CR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
865 #define ICR_OR_PSEUDO_P(R) (ICR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
866 #define FCR_OR_PSEUDO_P(R) (FCR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
867 #define ACC_OR_PSEUDO_P(R) (ACC_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
868 #define ACCG_OR_PSEUDO_P(R) (ACCG_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
870 #define MAX_STACK_IMMEDIATE_OFFSET 2047
873 /* Register Basics. */
875 /* Number of hardware registers known to the compiler. They receive numbers 0
876 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number
877 really is assigned the number `FIRST_PSEUDO_REGISTER'. */
878 #define FIRST_PSEUDO_REGISTER (SPR_LAST + 1)
880 /* The first/last register that can contain the arguments to a function. */
881 #define FIRST_ARG_REGNUM (GPR_FIRST + 8)
882 #define LAST_ARG_REGNUM (FIRST_ARG_REGNUM + FRV_NUM_ARG_REGS - 1)
884 /* Registers used by the exception handling functions. These should be
885 registers that are not otherwised used by the calling sequence. */
886 #define FIRST_EH_REGNUM 14
887 #define LAST_EH_REGNUM 15
889 /* Scratch registers used in the prologue, epilogue and thunks.
890 OFFSET_REGNO is for loading constant addends that are too big for a
891 single instruction. TEMP_REGNO is used for transferring SPRs to and from
892 the stack, and various other activities. */
893 #define OFFSET_REGNO 4
896 /* Registers used in the prologue. OLD_SP_REGNO is the old stack pointer,
897 which is sometimes used to set up the frame pointer. */
898 #define OLD_SP_REGNO 6
900 /* Registers used in the epilogue. STACKADJ_REGNO stores the exception
901 handler's stack adjustment. */
902 #define STACKADJ_REGNO 6
904 /* Registers used in thunks. JMP_REGNO is used for loading the target
908 #define EH_RETURN_DATA_REGNO(N) ((N) <= (LAST_EH_REGNUM - FIRST_EH_REGNUM)? \
909 (N) + FIRST_EH_REGNUM : INVALID_REGNUM)
910 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, STACKADJ_REGNO)
911 #define EH_RETURN_HANDLER_RTX RETURN_ADDR_RTX (0, frame_pointer_rtx)
913 /* An initializer that says which registers are used for fixed purposes all
914 throughout the compiled code and are therefore not available for general
915 allocation. These would include the stack pointer, the frame pointer
916 (except on machines where that can be used as a general register when no
917 frame pointer is needed), the program counter on machines where that is
918 considered one of the addressable registers, and any other numbered register
921 This information is expressed as a sequence of numbers, separated by commas
922 and surrounded by braces. The Nth number is 1 if register N is fixed, 0
925 The table initialized from this macro, and the table initialized by the
926 following one, may be overridden at run time either automatically, by the
927 actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the
928 command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */
933 gr3 -- Hidden Parameter
934 gr16 -- Small Data reserved
940 cr3 -- reserved to reload FCC registers.
941 cr7 -- reserved to reload ICC registers. */
942 #define FIXED_REGISTERS \
943 { /* Integer Registers */ \
944 1, 1, 1, 1, 0, 0, 0, 0, /* 000-007, gr0 - gr7 */ \
945 0, 0, 0, 0, 0, 0, 0, 0, /* 008-015, gr8 - gr15 */ \
946 1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \
947 0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \
948 0, 0, 0, 0, 0, 0, 0, 0, /* 032-039, gr32 - gr39 */ \
949 0, 0, 0, 0, 0, 0, 0, 0, /* 040-040, gr48 - gr47 */ \
950 0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \
951 0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \
952 /* Float Registers */ \
953 0, 0, 0, 0, 0, 0, 0, 0, /* 064-071, fr0 - fr7 */ \
954 0, 0, 0, 0, 0, 0, 0, 0, /* 072-079, fr8 - fr15 */ \
955 0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \
956 0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \
957 0, 0, 0, 0, 0, 0, 0, 0, /* 096-103, fr32 - fr39 */ \
958 0, 0, 0, 0, 0, 0, 0, 0, /* 104-111, fr48 - fr47 */ \
959 0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \
960 0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \
961 /* Condition Code Registers */ \
962 0, 0, 0, 0, /* 128-131, fcc0 - fcc3 */ \
963 0, 0, 0, 1, /* 132-135, icc0 - icc3 */ \
964 /* Conditional execution Registers (CCR) */ \
965 0, 0, 0, 0, 0, 0, 0, 1, /* 136-143, cr0 - cr7 */ \
967 1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \
968 1, 1, 1, 1, 1, 1, 1, 1, /* 152-159, accg0 - accg7 */ \
969 /* Other registers */ \
970 1, /* 160, AP - fake arg ptr */ \
971 0, /* 161, LR - Link register*/ \
972 0, /* 162, LCR - Loop count reg*/ \
975 /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in
976 general) by function calls as well as for fixed registers. This macro
977 therefore identifies the registers that are not available for general
978 allocation of values that must live across function calls.
980 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically
981 saves it on function entry and restores it on function exit, if the register
982 is used within the function. */
983 #define CALL_USED_REGISTERS \
984 { /* Integer Registers */ \
985 1, 1, 1, 1, 1, 1, 1, 1, /* 000-007, gr0 - gr7 */ \
986 1, 1, 1, 1, 1, 1, 1, 1, /* 008-015, gr8 - gr15 */ \
987 1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \
988 0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \
989 1, 1, 1, 1, 1, 1, 1, 1, /* 032-039, gr32 - gr39 */ \
990 1, 1, 1, 1, 1, 1, 1, 1, /* 040-040, gr48 - gr47 */ \
991 0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \
992 0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \
993 /* Float Registers */ \
994 1, 1, 1, 1, 1, 1, 1, 1, /* 064-071, fr0 - fr7 */ \
995 1, 1, 1, 1, 1, 1, 1, 1, /* 072-079, fr8 - fr15 */ \
996 0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \
997 0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \
998 1, 1, 1, 1, 1, 1, 1, 1, /* 096-103, fr32 - fr39 */ \
999 1, 1, 1, 1, 1, 1, 1, 1, /* 104-111, fr48 - fr47 */ \
1000 0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \
1001 0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \
1002 /* Condition Code Registers */ \
1003 1, 1, 1, 1, /* 128-131, fcc0 - fcc3 */ \
1004 1, 1, 1, 1, /* 132-135, icc0 - icc3 */ \
1005 /* Conditional execution Registers (CCR) */ \
1006 1, 1, 1, 1, 1, 1, 1, 1, /* 136-143, cr0 - cr7 */ \
1007 /* Accumulators */ \
1008 1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \
1009 1, 1, 1, 1, 1, 1, 1, 1, /* 152-159, accg0 - accg7 */ \
1010 /* Other registers */ \
1011 1, /* 160, AP - fake arg ptr */ \
1012 1, /* 161, LR - Link register*/ \
1013 1, /* 162, LCR - Loop count reg */ \
1016 /* Zero or more C statements that may conditionally modify two variables
1017 `fixed_regs' and `call_used_regs' (both of type `char []') after they have
1018 been initialized from the two preceding macros.
1020 This is necessary in case the fixed or call-clobbered registers depend on
1023 You need not define this macro if it has no work to do.
1025 If the usage of an entire class of registers depends on the target flags,
1026 you may indicate this to GCC by using this macro to modify `fixed_regs' and
1027 `call_used_regs' to 1 for each of the registers in the classes which should
1028 not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return
1029 `NO_REGS' if it is called with a letter for a class that shouldn't be used.
1031 (However, if this class is not included in `GENERAL_REGS' and all of the
1032 insn patterns whose constraints permit this class are controlled by target
1033 switches, then GCC will automatically avoid using these registers when the
1034 target switches are opposed to them.) */
1036 #define CONDITIONAL_REGISTER_USAGE frv_conditional_register_usage ()
1039 /* Order of allocation of registers. */
1041 /* If defined, an initializer for a vector of integers, containing the numbers
1042 of hard registers in the order in which GNU CC should prefer to use them
1043 (from most preferred to least).
1045 If this macro is not defined, registers are used lowest numbered first (all
1048 One use of this macro is on machines where the highest numbered registers
1049 must always be saved and the save-multiple-registers instruction supports
1050 only sequences of consecutive registers. On such machines, define
1051 `REG_ALLOC_ORDER' to be an initializer that lists the highest numbered
1052 allocatable register first. */
1054 /* On the FRV, allocate GR16 and GR17 after other saved registers so that we
1055 have a better chance of allocating 2 registers at a time and can use the
1056 double word load/store instructions in the prologue. */
1057 #define REG_ALLOC_ORDER \
1059 /* volatile registers */ \
1060 GPR_FIRST + 4, GPR_FIRST + 5, GPR_FIRST + 6, GPR_FIRST + 7, \
1061 GPR_FIRST + 8, GPR_FIRST + 9, GPR_FIRST + 10, GPR_FIRST + 11, \
1062 GPR_FIRST + 12, GPR_FIRST + 13, GPR_FIRST + 14, GPR_FIRST + 15, \
1063 GPR_FIRST + 32, GPR_FIRST + 33, GPR_FIRST + 34, GPR_FIRST + 35, \
1064 GPR_FIRST + 36, GPR_FIRST + 37, GPR_FIRST + 38, GPR_FIRST + 39, \
1065 GPR_FIRST + 40, GPR_FIRST + 41, GPR_FIRST + 42, GPR_FIRST + 43, \
1066 GPR_FIRST + 44, GPR_FIRST + 45, GPR_FIRST + 46, GPR_FIRST + 47, \
1068 FPR_FIRST + 0, FPR_FIRST + 1, FPR_FIRST + 2, FPR_FIRST + 3, \
1069 FPR_FIRST + 4, FPR_FIRST + 5, FPR_FIRST + 6, FPR_FIRST + 7, \
1070 FPR_FIRST + 8, FPR_FIRST + 9, FPR_FIRST + 10, FPR_FIRST + 11, \
1071 FPR_FIRST + 12, FPR_FIRST + 13, FPR_FIRST + 14, FPR_FIRST + 15, \
1072 FPR_FIRST + 32, FPR_FIRST + 33, FPR_FIRST + 34, FPR_FIRST + 35, \
1073 FPR_FIRST + 36, FPR_FIRST + 37, FPR_FIRST + 38, FPR_FIRST + 39, \
1074 FPR_FIRST + 40, FPR_FIRST + 41, FPR_FIRST + 42, FPR_FIRST + 43, \
1075 FPR_FIRST + 44, FPR_FIRST + 45, FPR_FIRST + 46, FPR_FIRST + 47, \
1077 ICC_FIRST + 0, ICC_FIRST + 1, ICC_FIRST + 2, ICC_FIRST + 3, \
1078 FCC_FIRST + 0, FCC_FIRST + 1, FCC_FIRST + 2, FCC_FIRST + 3, \
1079 CR_FIRST + 0, CR_FIRST + 1, CR_FIRST + 2, CR_FIRST + 3, \
1080 CR_FIRST + 4, CR_FIRST + 5, CR_FIRST + 6, CR_FIRST + 7, \
1082 /* saved registers */ \
1083 GPR_FIRST + 18, GPR_FIRST + 19, \
1084 GPR_FIRST + 20, GPR_FIRST + 21, GPR_FIRST + 22, GPR_FIRST + 23, \
1085 GPR_FIRST + 24, GPR_FIRST + 25, GPR_FIRST + 26, GPR_FIRST + 27, \
1086 GPR_FIRST + 48, GPR_FIRST + 49, GPR_FIRST + 50, GPR_FIRST + 51, \
1087 GPR_FIRST + 52, GPR_FIRST + 53, GPR_FIRST + 54, GPR_FIRST + 55, \
1088 GPR_FIRST + 56, GPR_FIRST + 57, GPR_FIRST + 58, GPR_FIRST + 59, \
1089 GPR_FIRST + 60, GPR_FIRST + 61, GPR_FIRST + 62, GPR_FIRST + 63, \
1090 GPR_FIRST + 16, GPR_FIRST + 17, \
1092 FPR_FIRST + 16, FPR_FIRST + 17, FPR_FIRST + 18, FPR_FIRST + 19, \
1093 FPR_FIRST + 20, FPR_FIRST + 21, FPR_FIRST + 22, FPR_FIRST + 23, \
1094 FPR_FIRST + 24, FPR_FIRST + 25, FPR_FIRST + 26, FPR_FIRST + 27, \
1095 FPR_FIRST + 28, FPR_FIRST + 29, FPR_FIRST + 30, FPR_FIRST + 31, \
1096 FPR_FIRST + 48, FPR_FIRST + 49, FPR_FIRST + 50, FPR_FIRST + 51, \
1097 FPR_FIRST + 52, FPR_FIRST + 53, FPR_FIRST + 54, FPR_FIRST + 55, \
1098 FPR_FIRST + 56, FPR_FIRST + 57, FPR_FIRST + 58, FPR_FIRST + 59, \
1099 FPR_FIRST + 60, FPR_FIRST + 61, FPR_FIRST + 62, FPR_FIRST + 63, \
1101 /* special or fixed registers */ \
1102 GPR_FIRST + 0, GPR_FIRST + 1, GPR_FIRST + 2, GPR_FIRST + 3, \
1103 GPR_FIRST + 28, GPR_FIRST + 29, GPR_FIRST + 30, GPR_FIRST + 31, \
1104 ACC_FIRST + 0, ACC_FIRST + 1, ACC_FIRST + 2, ACC_FIRST + 3, \
1105 ACC_FIRST + 4, ACC_FIRST + 5, ACC_FIRST + 6, ACC_FIRST + 7, \
1106 ACCG_FIRST + 0, ACCG_FIRST + 1, ACCG_FIRST + 2, ACCG_FIRST + 3, \
1107 ACCG_FIRST + 4, ACCG_FIRST + 5, ACCG_FIRST + 6, ACCG_FIRST + 7, \
1108 AP_FIRST, LR_REGNO, LCR_REGNO \
1112 /* How Values Fit in Registers. */
1114 /* A C expression for the number of consecutive hard registers, starting at
1115 register number REGNO, required to hold a value of mode MODE.
1117 On a machine where all registers are exactly one word, a suitable definition
1120 #define HARD_REGNO_NREGS(REGNO, MODE) \
1121 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
1122 / UNITS_PER_WORD)) */
1124 /* On the FRV, make the CC modes take 3 words in the integer registers, so that
1125 we can build the appropriate instructions to properly reload the values. */
1126 #define HARD_REGNO_NREGS(REGNO, MODE) frv_hard_regno_nregs (REGNO, MODE)
1128 /* A C expression that is nonzero if it is permissible to store a value of mode
1129 MODE in hard register number REGNO (or in several registers starting with
1130 that one). For a machine where all registers are equivalent, a suitable
1133 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
1135 It is not necessary for this macro to check for the numbers of fixed
1136 registers, because the allocation mechanism considers them to be always
1139 On some machines, double-precision values must be kept in even/odd register
1140 pairs. The way to implement that is to define this macro to reject odd
1141 register numbers for such modes.
1143 The minimum requirement for a mode to be OK in a register is that the
1144 `movMODE' instruction pattern support moves between the register and any
1145 other hard register for which the mode is OK; and that moving a value into
1146 the register and back out not alter it.
1148 Since the same instruction used to move `SImode' will work for all narrower
1149 integer modes, it is not necessary on any machine for `HARD_REGNO_MODE_OK'
1150 to distinguish between these modes, provided you define patterns `movhi',
1151 etc., to take advantage of this. This is useful because of the interaction
1152 between `HARD_REGNO_MODE_OK' and `MODES_TIEABLE_P'; it is very desirable for
1153 all integer modes to be tieable.
1155 Many machines have special registers for floating point arithmetic. Often
1156 people assume that floating point machine modes are allowed only in floating
1157 point registers. This is not true. Any registers that can hold integers
1158 can safely *hold* a floating point machine mode, whether or not floating
1159 arithmetic can be done on it in those registers. Integer move instructions
1160 can be used to move the values.
1162 On some machines, though, the converse is true: fixed-point machine modes
1163 may not go in floating registers. This is true if the floating registers
1164 normalize any value stored in them, because storing a non-floating value
1165 there would garble it. In this case, `HARD_REGNO_MODE_OK' should reject
1166 fixed-point machine modes in floating registers. But if the floating
1167 registers do not automatically normalize, if you can store any bit pattern
1168 in one and retrieve it unchanged without a trap, then any machine mode may
1169 go in a floating register, so you can define this macro to say so.
1171 The primary significance of special floating registers is rather that they
1172 are the registers acceptable in floating point arithmetic instructions.
1173 However, this is of no concern to `HARD_REGNO_MODE_OK'. You handle it by
1174 writing the proper constraints for those instructions.
1176 On some machines, the floating registers are especially slow to access, so
1177 that it is better to store a value in a stack frame than in such a register
1178 if floating point arithmetic is not being done. As long as the floating
1179 registers are not in class `GENERAL_REGS', they will not be used unless some
1180 pattern's constraint asks for one. */
1181 #define HARD_REGNO_MODE_OK(REGNO, MODE) frv_hard_regno_mode_ok (REGNO, MODE)
1183 /* A C expression that is nonzero if it is desirable to choose register
1184 allocation so as to avoid move instructions between a value of mode MODE1
1185 and a value of mode MODE2.
1187 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are
1188 ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be
1190 #define MODES_TIEABLE_P(MODE1, MODE2) (MODE1 == MODE2)
1192 /* Define this macro if the compiler should avoid copies to/from CCmode
1193 registers. You should only define this macro if support fo copying to/from
1194 CCmode is incomplete. */
1195 #define AVOID_CCMODE_COPIES
1198 /* Register Classes. */
1200 /* An enumeral type that must be defined with all the register class names as
1201 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
1202 register class, followed by one more enumeral value, `LIM_REG_CLASSES',
1203 which is not a register class but rather tells how many classes there are.
1205 Each register class has a number, which is the value of casting the class
1206 name to type `int'. The number serves as an index in many of the tables
1234 #define GENERAL_REGS GPR_REGS
1236 /* The number of distinct register classes, defined as follows:
1238 #define N_REG_CLASSES (int) LIM_REG_CLASSES */
1239 #define N_REG_CLASSES ((int) LIM_REG_CLASSES)
1241 /* An initializer containing the names of the register classes as C string
1242 constants. These names are used in writing some of the debugging dumps. */
1243 #define REG_CLASS_NAMES { \
1267 /* An initializer containing the contents of the register classes, as integers
1268 which are bit masks. The Nth integer specifies the contents of class N.
1269 The way the integer MASK is interpreted is that register R is in the class
1270 if `MASK & (1 << R)' is 1.
1272 When the machine has more than 32 registers, an integer does not suffice.
1273 Then the integers are replaced by sub-initializers, braced groupings
1274 containing several integers. Each sub-initializer must be suitable as an
1275 initializer for the type `HARD_REG_SET' which is defined in
1276 `hard-reg-set.h'. */
1277 #define REG_CLASS_CONTENTS \
1278 { /* gr0-gr31 gr32-gr63 fr0-fr31 fr32-fr-63 cc/ccr/acc ap/spr */ \
1279 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* NO_REGS */\
1280 { 0x00000000,0x00000000,0x00000000,0x00000000,0x000000f0,0x0}, /* ICC_REGS */\
1281 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000000f,0x0}, /* FCC_REGS */\
1282 { 0x00000000,0x00000000,0x00000000,0x00000000,0x000000ff,0x0}, /* CC_REGS */\
1283 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000f000,0x0}, /* ICR_REGS */\
1284 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000f00,0x0}, /* FCR_REGS */\
1285 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000ff00,0x0}, /* CR_REGS */\
1286 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x4}, /* LCR_REGS */\
1287 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x2}, /* LR_REGS */\
1288 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x6}, /* SPR_REGS */\
1289 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* QUAD_ACC */\
1290 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* EVEN_ACC */\
1291 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* ACC_REGS */\
1292 { 0x00000000,0x00000000,0x00000000,0x00000000,0xff000000,0x0}, /* ACCG_REGS*/\
1293 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* QUAD_FPR */\
1294 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FEVEN_REG*/\
1295 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FPR_REGS */\
1296 { 0x0ffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* QUAD_REGS*/\
1297 { 0xfffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* EVEN_REGS*/\
1298 { 0xffffffff,0xffffffff,0x00000000,0x00000000,0x00000000,0x1}, /* GPR_REGS */\
1299 { 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0x7}, /* ALL_REGS */\
1302 /* A C expression whose value is a register class containing hard register
1303 REGNO. In general there is more than one such class; choose a class which
1304 is "minimal", meaning that no smaller class also contains the register. */
1306 extern enum reg_class regno_reg_class[];
1307 #define REGNO_REG_CLASS(REGNO) regno_reg_class [REGNO]
1309 /* A macro whose definition is the name of the class to which a valid base
1310 register must belong. A base register is one used in an address which is
1311 the register value plus a displacement. */
1312 #define BASE_REG_CLASS GPR_REGS
1314 /* A macro whose definition is the name of the class to which a valid index
1315 register must belong. An index register is one used in an address where its
1316 value is either multiplied by a scale factor or added to another register
1317 (as well as added to a displacement). */
1318 #define INDEX_REG_CLASS GPR_REGS
1320 /* A C expression which defines the machine-dependent operand constraint
1321 letters for register classes. If CHAR is such a letter, the value should be
1322 the register class corresponding to it. Otherwise, the value should be
1323 `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS',
1324 will not be passed to this macro; you do not need to handle it.
1326 The following letters are unavailable, due to being used as
1331 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P'
1332 'Q', 'R', 'S', 'T', 'U'
1334 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */
1336 extern enum reg_class reg_class_from_letter[];
1337 #define REG_CLASS_FROM_LETTER(CHAR) reg_class_from_letter [(unsigned char)(CHAR)]
1339 /* A C expression which is nonzero if register number NUM is suitable for use
1340 as a base register in operand addresses. It may be either a suitable hard
1341 register or a pseudo register that has been allocated such a hard register. */
1342 #define REGNO_OK_FOR_BASE_P(NUM) \
1343 ((NUM) < FIRST_PSEUDO_REGISTER \
1345 : (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM])))
1347 /* A C expression which is nonzero if register number NUM is suitable for use
1348 as an index register in operand addresses. It may be either a suitable hard
1349 register or a pseudo register that has been allocated such a hard register.
1351 The difference between an index register and a base register is that the
1352 index register may be scaled. If an address involves the sum of two
1353 registers, neither one of them scaled, then either one may be labeled the
1354 "base" and the other the "index"; but whichever labeling is used must fit
1355 the machine's constraints of which registers may serve in each capacity.
1356 The compiler will try both labelings, looking for one that is valid, and
1357 will reload one or both registers only if neither labeling works. */
1358 #define REGNO_OK_FOR_INDEX_P(NUM) \
1359 ((NUM) < FIRST_PSEUDO_REGISTER \
1361 : (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM])))
1363 /* A C expression that places additional restrictions on the register class to
1364 use when it is necessary to copy value X into a register in class CLASS.
1365 The value is a register class; perhaps CLASS, or perhaps another, smaller
1366 class. On many machines, the following definition is safe:
1368 #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
1370 Sometimes returning a more restrictive class makes better code. For
1371 example, on the 68000, when X is an integer constant that is in range for a
1372 `moveq' instruction, the value of this macro is always `DATA_REGS' as long
1373 as CLASS includes the data registers. Requiring a data register guarantees
1374 that a `moveq' will be used.
1376 If X is a `const_double', by returning `NO_REGS' you can force X into a
1377 memory constant. This is useful on certain machines where immediate
1378 floating values cannot be loaded into certain kinds of registers.
1380 This declaration must be present. */
1381 #define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS
1383 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \
1384 frv_secondary_reload_class (CLASS, MODE, X, TRUE)
1386 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \
1387 frv_secondary_reload_class (CLASS, MODE, X, FALSE)
1389 /* A C expression whose value is nonzero if pseudos that have been assigned to
1390 registers of class CLASS would likely be spilled because registers of CLASS
1391 are needed for spill registers.
1393 The default value of this macro returns 1 if CLASS has exactly one register
1394 and zero otherwise. On most machines, this default should be used. Only
1395 define this macro to some other expression if pseudo allocated by
1396 `local-alloc.c' end up in memory because their hard registers were needed
1397 for spill registers. If this macro returns nonzero for those classes, those
1398 pseudos will only be allocated by `global.c', which knows how to reallocate
1399 the pseudo to another register. If there would not be another register
1400 available for reallocation, you should not change the definition of this
1401 macro since the only effect of such a definition would be to slow down
1402 register allocation. */
1403 #define CLASS_LIKELY_SPILLED_P(CLASS) frv_class_likely_spilled_p (CLASS)
1405 /* A C expression for the maximum number of consecutive registers of
1406 class CLASS needed to hold a value of mode MODE.
1408 This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value
1409 of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of
1410 `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS.
1412 This macro helps control the handling of multiple-word values in
1415 This declaration is required. */
1416 #define CLASS_MAX_NREGS(CLASS, MODE) frv_class_max_nregs (CLASS, MODE)
1418 #define ZERO_P(x) (x == CONST0_RTX (GET_MODE (x)))
1420 /* 6 bit signed immediate. */
1421 #define CONST_OK_FOR_I(VALUE) IN_RANGE_P(VALUE, -32, 31)
1422 /* 10 bit signed immediate. */
1423 #define CONST_OK_FOR_J(VALUE) IN_RANGE_P(VALUE, -512, 511)
1425 #define CONST_OK_FOR_K(VALUE) 0
1426 /* 16 bit signed immediate. */
1427 #define CONST_OK_FOR_L(VALUE) IN_RANGE_P(VALUE, -32768, 32767)
1428 /* 16 bit unsigned immediate. */
1429 #define CONST_OK_FOR_M(VALUE) IN_RANGE_P (VALUE, 0, 65535)
1430 /* 12 bit signed immediate that is negative. */
1431 #define CONST_OK_FOR_N(VALUE) IN_RANGE_P(VALUE, -2048, -1)
1433 #define CONST_OK_FOR_O(VALUE) ((VALUE) == 0)
1434 /* 12 bit signed immediate that is negative. */
1435 #define CONST_OK_FOR_P(VALUE) IN_RANGE_P(VALUE, 1, 2047)
1437 /* A C expression that defines the machine-dependent operand constraint letters
1438 (`I', `J', `K', .. 'P') that specify particular ranges of integer values.
1439 If C is one of those letters, the expression should check that VALUE, an
1440 integer, is in the appropriate range and return 1 if so, 0 otherwise. If C
1441 is not one of those letters, the value should be 0 regardless of VALUE. */
1442 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
1443 ( (C) == 'I' ? CONST_OK_FOR_I (VALUE) \
1444 : (C) == 'J' ? CONST_OK_FOR_J (VALUE) \
1445 : (C) == 'K' ? CONST_OK_FOR_K (VALUE) \
1446 : (C) == 'L' ? CONST_OK_FOR_L (VALUE) \
1447 : (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
1448 : (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
1449 : (C) == 'O' ? CONST_OK_FOR_O (VALUE) \
1450 : (C) == 'P' ? CONST_OK_FOR_P (VALUE) \
1454 /* A C expression that defines the machine-dependent operand constraint letters
1455 (`G', `H') that specify particular ranges of `const_double' values.
1457 If C is one of those letters, the expression should check that VALUE, an RTX
1458 of code `const_double', is in the appropriate range and return 1 if so, 0
1459 otherwise. If C is not one of those letters, the value should be 0
1460 regardless of VALUE.
1462 `const_double' is used for all floating-point constants and for `DImode'
1463 fixed-point constants. A given letter can accept either or both kinds of
1464 values. It can use `GET_MODE' to distinguish between these kinds. */
1466 #define CONST_DOUBLE_OK_FOR_G(VALUE) \
1467 ((GET_MODE (VALUE) == VOIDmode \
1468 && CONST_DOUBLE_LOW (VALUE) == 0 \
1469 && CONST_DOUBLE_HIGH (VALUE) == 0) \
1470 || ((GET_MODE (VALUE) == SFmode \
1471 || GET_MODE (VALUE) == DFmode) \
1472 && (VALUE) == CONST0_RTX (GET_MODE (VALUE))))
1474 #define CONST_DOUBLE_OK_FOR_H(VALUE) 0
1476 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
1477 ( (C) == 'G' ? CONST_DOUBLE_OK_FOR_G (VALUE) \
1478 : (C) == 'H' ? CONST_DOUBLE_OK_FOR_H (VALUE) \
1481 /* A C expression that defines the optional machine-dependent constraint
1482 letters (`Q', `R', `S', `T', `U') that can be used to segregate specific
1483 types of operands, usually memory references, for the target machine.
1484 Normally this macro will not be defined. If it is required for a particular
1485 target machine, it should return 1 if VALUE corresponds to the operand type
1486 represented by the constraint letter C. If C is not defined as an extra
1487 constraint, the value returned should be 0 regardless of VALUE.
1489 For example, on the ROMP, load instructions cannot have their output in r0
1490 if the memory reference contains a symbolic address. Constraint letter `Q'
1491 is defined as representing a memory address that does *not* contain a
1492 symbolic address. An alternative is specified with a `Q' constraint on the
1493 input and `r' on the output. The next alternative specifies `m' on the
1494 input and a register class that does not include r0 on the output. */
1496 /* Small data references */
1497 #define EXTRA_CONSTRAINT_FOR_Q(VALUE) \
1498 (small_data_symbolic_operand (VALUE, GET_MODE (VALUE)))
1500 /* Double word memory ops that take one instruction. */
1501 #define EXTRA_CONSTRAINT_FOR_R(VALUE) \
1502 (dbl_memory_one_insn_operand (VALUE, GET_MODE (VALUE)))
1505 #define EXTRA_CONSTRAINT_FOR_S(VALUE) (GET_CODE (VALUE) == SYMBOL_REF)
1507 /* Double word memory ops that take two instructions. */
1508 #define EXTRA_CONSTRAINT_FOR_T(VALUE) \
1509 (dbl_memory_two_insn_operand (VALUE, GET_MODE (VALUE)))
1511 /* Memory operand for conditional execution. */
1512 #define EXTRA_CONSTRAINT_FOR_U(VALUE) \
1513 (condexec_memory_operand (VALUE, GET_MODE (VALUE)))
1515 #define EXTRA_CONSTRAINT(VALUE, C) \
1516 ( (C) == 'Q' ? EXTRA_CONSTRAINT_FOR_Q (VALUE) \
1517 : (C) == 'R' ? EXTRA_CONSTRAINT_FOR_R (VALUE) \
1518 : (C) == 'S' ? EXTRA_CONSTRAINT_FOR_S (VALUE) \
1519 : (C) == 'T' ? EXTRA_CONSTRAINT_FOR_T (VALUE) \
1520 : (C) == 'U' ? EXTRA_CONSTRAINT_FOR_U (VALUE) \
1524 /* Basic Stack Layout. */
1526 /* Structure to describe information about a saved range of registers */
1528 typedef struct frv_stack_regs {
1529 const char * name; /* name of the register ranges */
1530 int first; /* first register in the range */
1531 int last; /* last register in the range */
1532 int size_1word; /* # of bytes to be stored via 1 word stores */
1533 int size_2words; /* # of bytes to be stored via 2 word stores */
1534 unsigned char field_p; /* true if the registers are a single SPR */
1535 unsigned char dword_p; /* true if we can do dword stores */
1536 unsigned char special_p; /* true if the regs have a fixed save loc. */
1539 /* Register ranges to look into saving. */
1540 #define STACK_REGS_GPR 0 /* Gprs (normally gr16..gr31, gr48..gr63) */
1541 #define STACK_REGS_FPR 1 /* Fprs (normally fr16..fr31, fr48..fr63) */
1542 #define STACK_REGS_LR 2 /* LR register */
1543 #define STACK_REGS_CC 3 /* CCrs (normally not saved) */
1544 #define STACK_REGS_LCR 5 /* lcr register */
1545 #define STACK_REGS_STDARG 6 /* stdarg registers */
1546 #define STACK_REGS_STRUCT 7 /* structure return (gr3) */
1547 #define STACK_REGS_FP 8 /* FP register */
1548 #define STACK_REGS_MAX 9 /* # of register ranges */
1550 /* Values for save_p field. */
1551 #define REG_SAVE_NO_SAVE 0 /* register not saved */
1552 #define REG_SAVE_1WORD 1 /* save the register */
1553 #define REG_SAVE_2WORDS 2 /* save register and register+1 */
1555 /* Structure used to define the frv stack. */
1557 typedef struct frv_stack {
1558 int total_size; /* total bytes allocated for stack */
1559 int vars_size; /* variable save area size */
1560 int parameter_size; /* outgoing parameter size */
1561 int stdarg_size; /* size of regs needed to be saved for stdarg */
1562 int regs_size; /* size of the saved registers */
1563 int regs_size_1word; /* # of bytes to be stored via 1 word stores */
1564 int regs_size_2words; /* # of bytes to be stored via 2 word stores */
1565 int header_size; /* size of the old FP, struct ret., LR save */
1566 int pretend_size; /* size of pretend args */
1567 int vars_offset; /* offset to save local variables from new SP*/
1568 int regs_offset; /* offset to save registers from new SP */
1569 /* register range information */
1570 frv_stack_regs_t regs[STACK_REGS_MAX];
1571 /* offset to store each register */
1572 int reg_offset[FIRST_PSEUDO_REGISTER];
1573 /* whether to save register (& reg+1) */
1574 unsigned char save_p[FIRST_PSEUDO_REGISTER];
1577 /* Define this macro if pushing a word onto the stack moves the stack pointer
1578 to a smaller address. */
1579 #define STACK_GROWS_DOWNWARD 1
1581 /* Define this macro if the addresses of local variable slots are at negative
1582 offsets from the frame pointer. */
1583 #define FRAME_GROWS_DOWNWARD
1585 /* Offset from the frame pointer to the first local variable slot to be
1588 If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the
1589 first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by
1590 adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */
1591 #define STARTING_FRAME_OFFSET 0
1593 /* Offset from the stack pointer register to the first location at which
1594 outgoing arguments are placed. If not specified, the default value of zero
1595 is used. This is the proper value for most machines.
1597 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
1598 location at which outgoing arguments are placed. */
1599 #define STACK_POINTER_OFFSET 0
1601 /* Offset from the argument pointer register to the first argument's address.
1602 On some machines it may depend on the data type of the function.
1604 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
1605 argument's address. */
1606 #define FIRST_PARM_OFFSET(FUNDECL) 0
1608 /* A C expression whose value is RTL representing the address in a stack frame
1609 where the pointer to the caller's frame is stored. Assume that FRAMEADDR is
1610 an RTL expression for the address of the stack frame itself.
1612 If you don't define this macro, the default is to return the value of
1613 FRAMEADDR--that is, the stack frame address is also the address of the stack
1614 word that points to the previous frame. */
1615 #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) frv_dynamic_chain_address (FRAMEADDR)
1617 /* A C expression whose value is RTL representing the value of the return
1618 address for the frame COUNT steps up from the current frame, after the
1619 prologue. FRAMEADDR is the frame pointer of the COUNT frame, or the frame
1620 pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' is
1623 The value of the expression must always be the correct address when COUNT is
1624 zero, but may be `NULL_RTX' if there is not way to determine the return
1625 address of other frames. */
1626 #define RETURN_ADDR_RTX(COUNT, FRAMEADDR) frv_return_addr_rtx (COUNT, FRAMEADDR)
1628 /* This function contains machine specific function data. */
1629 struct machine_function GTY(())
1631 /* True if we have created an rtx that relies on the stack frame. */
1635 #define RETURN_POINTER_REGNUM LR_REGNO
1637 /* A C expression whose value is RTL representing the location of the incoming
1638 return address at the beginning of any function, before the prologue. This
1639 RTL is either a `REG', indicating that the return value is saved in `REG',
1640 or a `MEM' representing a location in the stack.
1642 You only need to define this macro if you want to support call frame
1643 debugging information like that provided by DWARF 2. */
1644 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM)
1647 /* Register That Address the Stack Frame. */
1649 /* The register number of the stack pointer register, which must also be a
1650 fixed register according to `FIXED_REGISTERS'. On most machines, the
1651 hardware determines which register this is. */
1652 #define STACK_POINTER_REGNUM (GPR_FIRST + 1)
1654 /* The register number of the frame pointer register, which is used to access
1655 automatic variables in the stack frame. On some machines, the hardware
1656 determines which register this is. On other machines, you can choose any
1657 register you wish for this purpose. */
1658 #define FRAME_POINTER_REGNUM (GPR_FIRST + 2)
1660 /* The register number of the arg pointer register, which is used to access the
1661 function's argument list. On some machines, this is the same as the frame
1662 pointer register. On some machines, the hardware determines which register
1663 this is. On other machines, you can choose any register you wish for this
1664 purpose. If this is not the same register as the frame pointer register,
1665 then you must mark it as a fixed register according to `FIXED_REGISTERS', or
1666 arrange to be able to eliminate it. */
1668 /* On frv this is a fake register that is eliminated in
1669 terms of either the frame pointer or stack pointer. */
1670 #define ARG_POINTER_REGNUM AP_FIRST
1672 /* Register numbers used for passing a function's static chain pointer. If
1673 register windows are used, the register number as seen by the called
1674 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as
1675 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers
1676 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined.
1678 The static chain register need not be a fixed register.
1680 If the static chain is passed in memory, these macros should not be defined;
1681 instead, the next two macros should be defined. */
1682 #define STATIC_CHAIN_REGNUM (GPR_FIRST + 7)
1683 #define STATIC_CHAIN_INCOMING_REGNUM (GPR_FIRST + 7)
1686 /* Eliminating the Frame Pointer and the Arg Pointer. */
1688 /* A C expression which is nonzero if a function must have and use a frame
1689 pointer. This expression is evaluated in the reload pass. If its value is
1690 nonzero the function will have a frame pointer.
1692 The expression can in principle examine the current function and decide
1693 according to the facts, but on most machines the constant 0 or the constant
1694 1 suffices. Use 0 when the machine allows code to be generated with no
1695 frame pointer, and doing so saves some time or space. Use 1 when there is
1696 no possible advantage to avoiding a frame pointer.
1698 In certain cases, the compiler does not know how to produce valid code
1699 without a frame pointer. The compiler recognizes those cases and
1700 automatically gives the function a frame pointer regardless of what
1701 `FRAME_POINTER_REQUIRED' says. You don't need to worry about them.
1703 In a function that does not require a frame pointer, the frame pointer
1704 register can be allocated for ordinary usage, unless you mark it as a fixed
1705 register. See `FIXED_REGISTERS' for more information. */
1706 #define FRAME_POINTER_REQUIRED frv_frame_pointer_required ()
1708 /* If defined, this macro specifies a table of register pairs used to eliminate
1709 unneeded registers that point into the stack frame. If it is not defined,
1710 the only elimination attempted by the compiler is to replace references to
1711 the frame pointer with references to the stack pointer.
1713 The definition of this macro is a list of structure initializations, each of
1714 which specifies an original and replacement register.
1716 On some machines, the position of the argument pointer is not known until
1717 the compilation is completed. In such a case, a separate hard register must
1718 be used for the argument pointer. This register can be eliminated by
1719 replacing it with either the frame pointer or the argument pointer,
1720 depending on whether or not the frame pointer has been eliminated.
1722 In this case, you might specify:
1723 #define ELIMINABLE_REGS \
1724 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1725 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1726 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
1728 Note that the elimination of the argument pointer with the stack pointer is
1729 specified first since that is the preferred elimination. */
1731 #define ELIMINABLE_REGS \
1733 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
1734 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
1735 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
1738 /* A C expression that returns nonzero if the compiler is allowed to try to
1739 replace register number FROM with register number TO. This macro need only
1740 be defined if `ELIMINABLE_REGS' is defined, and will usually be the constant
1741 1, since most of the cases preventing register elimination are things that
1742 the compiler already knows about. */
1744 #define CAN_ELIMINATE(FROM, TO) \
1745 ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \
1746 ? ! frame_pointer_needed \
1749 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the
1750 initial difference between the specified pair of registers. This macro must
1751 be defined if `ELIMINABLE_REGS' is defined. */
1753 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
1754 (OFFSET) = frv_initial_elimination_offset (FROM, TO)
1757 /* Passing Function Arguments on the Stack. */
1759 /* If defined, the maximum amount of space required for outgoing arguments will
1760 be computed and placed into the variable
1761 `current_function_outgoing_args_size'. No space will be pushed onto the
1762 stack for each call; instead, the function prologue should increase the
1763 stack frame size by this amount.
1765 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not
1767 #define ACCUMULATE_OUTGOING_ARGS 1
1769 /* A C expression that should indicate the number of bytes of its own arguments
1770 that a function pops on returning, or 0 if the function pops no arguments
1771 and the caller must therefore pop them all after the function returns.
1773 FUNDECL is a C variable whose value is a tree node that describes the
1774 function in question. Normally it is a node of type `FUNCTION_DECL' that
1775 describes the declaration of the function. From this it is possible to
1776 obtain the DECL_ATTRIBUTES of the function.
1778 FUNTYPE is a C variable whose value is a tree node that describes the
1779 function in question. Normally it is a node of type `FUNCTION_TYPE' that
1780 describes the data type of the function. From this it is possible to obtain
1781 the data types of the value and arguments (if known).
1783 When a call to a library function is being considered, FUNTYPE will contain
1784 an identifier node for the library function. Thus, if you need to
1785 distinguish among various library functions, you can do so by their names.
1786 Note that "library function" in this context means a function used to
1787 perform arithmetic, whose name is known specially in the compiler and was
1788 not mentioned in the C code being compiled.
1790 STACK-SIZE is the number of bytes of arguments passed on the stack. If a
1791 variable number of bytes is passed, it is zero, and argument popping will
1792 always be the responsibility of the calling function.
1794 On the VAX, all functions always pop their arguments, so the definition of
1795 this macro is STACK-SIZE. On the 68000, using the standard calling
1796 convention, no functions pop their arguments, so the value of the macro is
1797 always 0 in this case. But an alternative calling convention is available
1798 in which functions that take a fixed number of arguments pop them but other
1799 functions (such as `printf') pop nothing (the caller pops all). When this
1800 convention is in use, FUNTYPE is examined to determine whether a function
1801 takes a fixed number of arguments. */
1802 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
1805 /* Function Arguments in Registers. */
1807 /* Nonzero if we do not know how to pass TYPE solely in registers.
1808 We cannot do so in the following cases:
1810 - if the type has variable size
1811 - if the type is marked as addressable (it is required to be constructed
1813 - if the type is a structure or union. */
1815 #define MUST_PASS_IN_STACK(MODE,TYPE) \
1816 (((MODE) == BLKmode) \
1818 && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \
1819 || TREE_CODE (TYPE) == RECORD_TYPE \
1820 || TREE_CODE (TYPE) == UNION_TYPE \
1821 || TREE_CODE (TYPE) == QUAL_UNION_TYPE \
1822 || TREE_ADDRESSABLE (TYPE))))
1824 /* The number of register assigned to holding function arguments. */
1826 #define FRV_NUM_ARG_REGS 6
1828 /* A C expression that controls whether a function argument is passed in a
1829 register, and which register.
1831 The arguments are CUM, of type CUMULATIVE_ARGS, which summarizes (in a way
1832 defined by INIT_CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE) all of the previous
1833 arguments so far passed in registers; MODE, the machine mode of the argument;
1834 TYPE, the data type of the argument as a tree node or 0 if that is not known
1835 (which happens for C support library functions); and NAMED, which is 1 for an
1836 ordinary argument and 0 for nameless arguments that correspond to `...' in the
1837 called function's prototype.
1839 The value of the expression should either be a `reg' RTX for the hard
1840 register in which to pass the argument, or zero to pass the argument on the
1843 For machines like the VAX and 68000, where normally all arguments are
1844 pushed, zero suffices as a definition.
1846 The usual way to make the ANSI library `stdarg.h' work on a machine where
1847 some arguments are usually passed in registers, is to cause nameless
1848 arguments to be passed on the stack instead. This is done by making
1849 `FUNCTION_ARG' return 0 whenever NAMED is 0.
1851 You may use the macro `MUST_PASS_IN_STACK (MODE, TYPE)' in the definition of
1852 this macro to determine if this argument is of a type that must be passed in
1853 the stack. If `REG_PARM_STACK_SPACE' is not defined and `FUNCTION_ARG'
1854 returns nonzero for such an argument, the compiler will abort. If
1855 `REG_PARM_STACK_SPACE' is defined, the argument will be computed in the
1856 stack and then loaded into a register. */
1857 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
1858 frv_function_arg (&CUM, MODE, TYPE, NAMED, FALSE)
1860 /* Define this macro if the target machine has "register windows", so that the
1861 register in which a function sees an arguments is not necessarily the same
1862 as the one in which the caller passed the argument.
1864 For such machines, `FUNCTION_ARG' computes the register in which the caller
1865 passes the value, and `FUNCTION_INCOMING_ARG' should be defined in a similar
1866 fashion to tell the function being called where the arguments will arrive.
1868 If `FUNCTION_INCOMING_ARG' is not defined, `FUNCTION_ARG' serves both
1871 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
1872 frv_function_arg (&CUM, MODE, TYPE, NAMED, TRUE)
1874 /* A C expression for the number of words, at the beginning of an argument,
1875 must be put in registers. The value must be zero for arguments that are
1876 passed entirely in registers or that are entirely pushed on the stack.
1878 On some machines, certain arguments must be passed partially in registers
1879 and partially in memory. On these machines, typically the first N words of
1880 arguments are passed in registers, and the rest on the stack. If a
1881 multi-word argument (a `double' or a structure) crosses that boundary, its
1882 first few words must be passed in registers and the rest must be pushed.
1883 This macro tells the compiler when this occurs, and how many of the words
1884 should go in registers.
1886 `FUNCTION_ARG' for these arguments should return the first register to be
1887 used by the caller for this argument; likewise `FUNCTION_INCOMING_ARG', for
1888 the called function. */
1889 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
1890 frv_function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED)
1892 /* extern int frv_function_arg_partial_nregs PARAMS ((CUMULATIVE_ARGS, int, Tree, int)); */
1894 /* A C expression that indicates when an argument must be passed by reference.
1895 If nonzero for an argument, a copy of that argument is made in memory and a
1896 pointer to the argument is passed instead of the argument itself. The
1897 pointer is passed in whatever way is appropriate for passing a pointer to
1900 On machines where `REG_PARM_STACK_SPACE' is not defined, a suitable
1901 definition of this macro might be
1902 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
1903 MUST_PASS_IN_STACK (MODE, TYPE) */
1904 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
1905 frv_function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED)
1907 /* If defined, a C expression that indicates when it is the called function's
1908 responsibility to make a copy of arguments passed by invisible reference.
1909 Normally, the caller makes a copy and passes the address of the copy to the
1910 routine being called. When FUNCTION_ARG_CALLEE_COPIES is defined and is
1911 nonzero, the caller does not make a copy. Instead, it passes a pointer to
1912 the "live" value. The called function must not modify this value. If it
1913 can be determined that the value won't be modified, it need not make a copy;
1914 otherwise a copy must be made. */
1915 #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \
1916 frv_function_arg_callee_copies (&CUM, MODE, TYPE, NAMED)
1918 /* If defined, a C expression that indicates when it is more desirable to keep
1919 an argument passed by invisible reference as a reference, rather than
1920 copying it to a pseudo register. */
1921 #define FUNCTION_ARG_KEEP_AS_REFERENCE(CUM, MODE, TYPE, NAMED) \
1922 frv_function_arg_keep_as_reference (&CUM, MODE, TYPE, NAMED)
1924 /* A C type for declaring a variable that is used as the first argument of
1925 `FUNCTION_ARG' and other related values. For some target machines, the type
1926 `int' suffices and can hold the number of bytes of argument so far.
1928 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments
1929 that have been passed on the stack. The compiler has other variables to
1930 keep track of that. For target machines on which all arguments are passed
1931 on the stack, there is no need to store anything in `CUMULATIVE_ARGS';
1932 however, the data structure must exist and should not be empty, so use
1934 #define CUMULATIVE_ARGS int
1936 /* A C statement (sans semicolon) for initializing the variable CUM for the
1937 state at the beginning of the argument list. The variable has type
1938 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type
1939 of the function which will receive the args, or 0 if the args are to a
1940 compiler support library function. The value of INDIRECT is nonzero when
1941 processing an indirect call, for example a call through a function pointer.
1942 The value of INDIRECT is zero for a call to an explicitly named function, a
1943 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find
1944 arguments for the function being compiled.
1946 When processing a call to a compiler support library function, LIBNAME
1947 identifies which one. It is a `symbol_ref' rtx which contains the name of
1948 the function, as a string. LIBNAME is 0 when an ordinary C function call is
1949 being processed. Thus, each time this macro is called, either LIBNAME or
1950 FNTYPE is nonzero, but never both of them at once. */
1952 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL) \
1953 frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, FNDECL, FALSE)
1955 /* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the
1956 arguments for the function being compiled. If this macro is undefined,
1957 `INIT_CUMULATIVE_ARGS' is used instead.
1959 The value passed for LIBNAME is always 0, since library routines with
1960 special calling conventions are never compiled with GNU CC. The argument
1961 LIBNAME exists for symmetry with `INIT_CUMULATIVE_ARGS'. */
1963 #define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
1964 frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, NULL, TRUE)
1966 /* A C statement (sans semicolon) to update the summarizer variable CUM to
1967 advance past an argument in the argument list. The values MODE, TYPE and
1968 NAMED describe that argument. Once this is done, the variable CUM is
1969 suitable for analyzing the *following* argument with `FUNCTION_ARG', etc.
1971 This macro need not do anything if the argument in question was passed on
1972 the stack. The compiler knows how to track the amount of stack space used
1973 for arguments without any special help. */
1974 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
1975 frv_function_arg_advance (&CUM, MODE, TYPE, NAMED)
1977 /* If defined, a C expression that gives the alignment boundary, in bits, of an
1978 argument with the specified mode and type. If it is not defined,
1979 `PARM_BOUNDARY' is used for all arguments. */
1981 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
1982 frv_function_arg_boundary (MODE, TYPE)
1984 /* A C expression that is nonzero if REGNO is the number of a hard register in
1985 which function arguments are sometimes passed. This does *not* include
1986 implicit arguments such as the static chain and the structure-value address.
1987 On many machines, no registers can be used for this purpose since all
1988 function arguments are pushed on the stack. */
1989 #define FUNCTION_ARG_REGNO_P(REGNO) \
1990 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) <= LAST_ARG_REGNUM))
1993 /* How Scalar Function Values are Returned. */
1995 /* The number of the hard register that is used to return a scalar value from a
1997 #define RETURN_VALUE_REGNUM (GPR_FIRST + 8)
1999 /* A C expression to create an RTX representing the place where a function
2000 returns a value of data type VALTYPE. VALTYPE is a tree node representing a
2001 data type. Write `TYPE_MODE (VALTYPE)' to get the machine mode used to
2002 represent that type. On many machines, only the mode is relevant.
2003 (Actually, on most machines, scalar values are returned in the same place
2004 regardless of mode).
2006 If `PROMOTE_FUNCTION_RETURN' is defined, you must apply the same promotion
2007 rules specified in `PROMOTE_MODE' if VALTYPE is a scalar type.
2009 If the precise function being called is known, FUNC is a tree node
2010 (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This makes it
2011 possible to use a different value-returning convention for specific
2012 functions when all their calls are known.
2014 `FUNCTION_VALUE' is not used for return vales with aggregate data types,
2015 because these are returned in another way. See `STRUCT_VALUE_REGNUM' and
2016 related macros, below. */
2017 #define FUNCTION_VALUE(VALTYPE, FUNC) \
2018 gen_rtx (REG, TYPE_MODE (VALTYPE), RETURN_VALUE_REGNUM)
2020 /* A C expression to create an RTX representing the place where a library
2021 function returns a value of mode MODE.
2023 Note that "library function" in this context means a compiler support
2024 routine, used to perform arithmetic, whose name is known specially by the
2025 compiler and was not mentioned in the C code being compiled.
2027 The definition of `LIBRARY_VALUE' need not be concerned aggregate data
2028 types, because none of the library functions returns such types. */
2029 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, RETURN_VALUE_REGNUM)
2031 /* A C expression that is nonzero if REGNO is the number of a hard register in
2032 which the values of called function may come back.
2034 A register whose use for returning values is limited to serving as the
2035 second of a pair (for a value of type `double', say) need not be recognized
2036 by this macro. So for most machines, this definition suffices:
2038 #define FUNCTION_VALUE_REGNO_P(N) ((N) == RETURN)
2040 If the machine has register windows, so that the caller and the called
2041 function use different registers for the return value, this macro should
2042 recognize only the caller's register numbers. */
2043 #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM)
2046 /* How Large Values are Returned. */
2048 /* If the structure value address is passed in a register, then
2049 `STRUCT_VALUE_REGNUM' should be the number of that register. */
2050 #define STRUCT_VALUE_REGNUM (GPR_FIRST + 3)
2053 /* Function Entry and Exit. */
2055 /* Define this macro as a C expression that is nonzero if the return
2056 instruction or the function epilogue ignores the value of the stack pointer;
2057 in other words, if it is safe to delete an instruction to adjust the stack
2058 pointer before a return from the function.
2060 Note that this macro's value is relevant only for functions for which frame
2061 pointers are maintained. It is never safe to delete a final stack
2062 adjustment in a function that has no frame pointer, and the compiler knows
2063 this regardless of `EXIT_IGNORE_STACK'. */
2064 #define EXIT_IGNORE_STACK 1
2066 /* Generating Code for Profiling. */
2068 /* A C statement or compound statement to output to FILE some assembler code to
2069 call the profiling subroutine `mcount'. Before calling, the assembler code
2070 must load the address of a counter variable into a register where `mcount'
2071 expects to find the address. The name of this variable is `LP' followed by
2072 the number LABELNO, so you would generate the name using `LP%d' in a
2075 The details of how the address should be passed to `mcount' are determined
2076 by your operating system environment, not by GNU CC. To figure them out,
2077 compile a small program for profiling using the system's installed C
2078 compiler and look at the assembler code that results.
2080 This declaration must be present, but it can be an abort if profiling is
2083 #define FUNCTION_PROFILER(FILE, LABELNO) abort ()
2086 /* Implementing the Varargs Macros. */
2088 /* If defined, is a C expression that produces the machine-specific code for a
2089 call to `__builtin_saveregs'. This code will be moved to the very beginning
2090 of the function, before any parameter access are made. The return value of
2091 this function should be an RTX that contains the value to use as the return
2092 of `__builtin_saveregs'.
2094 If this macro is not defined, the compiler will output an ordinary call to
2095 the library function `__builtin_saveregs'. */
2097 #define EXPAND_BUILTIN_SAVEREGS() frv_expand_builtin_saveregs ()
2099 /* This macro offers an alternative to using `__builtin_saveregs' and defining
2100 the macro `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register
2101 arguments into the stack so that all the arguments appear to have been
2102 passed consecutively on the stack. Once this is done, you can use the
2103 standard implementation of varargs that works for machines that pass all
2104 their arguments on the stack.
2106 The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure, containing
2107 the values that obtain after processing of the named arguments. The
2108 arguments MODE and TYPE describe the last named argument--its machine mode
2109 and its data type as a tree node.
2111 The macro implementation should do two things: first, push onto the stack
2112 all the argument registers *not* used for the named arguments, and second,
2113 store the size of the data thus pushed into the `int'-valued variable whose
2114 name is supplied as the argument PRETEND_ARGS_SIZE. The value that you
2115 store here will serve as additional offset for setting up the stack frame.
2117 Because you must generate code to push the anonymous arguments at compile
2118 time without knowing their data types, `SETUP_INCOMING_VARARGS' is only
2119 useful on machines that have just a single category of argument register and
2120 use it uniformly for all data types.
2122 If the argument SECOND_TIME is nonzero, it means that the arguments of the
2123 function are being analyzed for the second time. This happens for an inline
2124 function, which is not actually compiled until the end of the source file.
2125 The macro `SETUP_INCOMING_VARARGS' should not generate any instructions in
2127 #define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_ARGS_SIZE, SECOND_TIME) \
2128 frv_setup_incoming_varargs (& ARGS_SO_FAR, (int) MODE, TYPE, \
2129 & PRETEND_ARGS_SIZE, SECOND_TIME)
2131 /* Implement the stdarg/varargs va_start macro. STDARG_P is nonzero if this
2132 is stdarg.h instead of varargs.h. VALIST is the tree of the va_list
2133 variable to initialize. NEXTARG is the machine independent notion of the
2134 'next' argument after the variable arguments. If not defined, a standard
2135 implementation will be defined that works for arguments passed on the stack. */
2137 #define EXPAND_BUILTIN_VA_START(VALIST, NEXTARG) \
2138 (frv_expand_builtin_va_start(VALIST, NEXTARG))
2140 /* Implement the stdarg/varargs va_arg macro. VALIST is the variable of type
2141 va_list as a tree, TYPE is the type passed to va_arg. */
2143 #define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \
2144 (frv_expand_builtin_va_arg (VALIST, TYPE))
2147 /* Trampolines for Nested Functions. */
2149 /* A C expression for the size in bytes of the trampoline, as an integer. */
2150 #define TRAMPOLINE_SIZE frv_trampoline_size ()
2152 /* Alignment required for trampolines, in bits.
2154 If you don't define this macro, the value of `BIGGEST_ALIGNMENT' is used for
2155 aligning trampolines. */
2156 #define TRAMPOLINE_ALIGNMENT 32
2158 /* A C statement to initialize the variable parts of a trampoline. ADDR is an
2159 RTX for the address of the trampoline; FNADDR is an RTX for the address of
2160 the nested function; STATIC_CHAIN is an RTX for the static chain value that
2161 should be passed to the function when it is called. */
2162 #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
2163 frv_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
2165 /* Define this macro if trampolines need a special subroutine to do their work.
2166 The macro should expand to a series of `asm' statements which will be
2167 compiled with GNU CC. They go in a library function named
2168 `__transfer_from_trampoline'.
2170 If you need to avoid executing the ordinary prologue code of a compiled C
2171 function when you jump to the subroutine, you can do so by placing a special
2172 label of your own in the assembler code. Use one `asm' statement to
2173 generate an assembler label, and another to make the label global. Then
2174 trampolines can use that label to jump directly to your special assembler
2177 #ifdef __FRV_UNDERSCORE__
2178 #define TRAMPOLINE_TEMPLATE_NAME "___trampoline_template"
2180 #define TRAMPOLINE_TEMPLATE_NAME "__trampoline_template"
2183 #define TRANSFER_FROM_TRAMPOLINE \
2184 extern int _write (int, const void *, unsigned); \
2187 __trampoline_setup (addr, size, fnaddr, sc) \
2193 extern short __trampoline_template[]; \
2194 short * to = addr; \
2195 short * from = &__trampoline_template[0]; \
2200 _write (2, "__trampoline_setup bad size\n", \
2201 sizeof ("__trampoline_setup bad size\n") - 1); \
2206 to[1] = (short)(fnaddr); \
2208 to[3] = (short)(sc); \
2210 to[5] = (short)(fnaddr >> 16); \
2212 to[7] = (short)(sc >> 16); \
2216 for (i = 0; i < 20; i++) \
2217 __asm__ volatile ("dcf @(%0,%1)\n\tici @(%0,%1)" :: "r" (to), "r" (i)); \
2221 "\t.globl " TRAMPOLINE_TEMPLATE_NAME "\n" \
2223 TRAMPOLINE_TEMPLATE_NAME ":\n" \
2224 "\tsetlos #0, gr6\n" /* jump register */ \
2225 "\tsetlos #0, gr7\n" /* static chain */ \
2226 "\tsethi #0, gr6\n" \
2227 "\tsethi #0, gr7\n" \
2228 "\tjmpl @(gr0,gr6)\n");
2231 /* Implicit Calls to Library Routines. */
2233 /* A C string constant giving the name of the function to call for the
2234 remainder in division of one signed full-word by another. If you do not
2235 define this macro, the default name is used, which is `__modsi3', a function
2236 defined in `libgcc.a'. */
2237 #define MODSI3_LIBCALL "__modi"
2239 /* A C string constant giving the name of the function to call for the
2240 remainder in division of one unsigned full-word by another. If you do not
2241 define this macro, the default name is used, which is `__umodsi3', a
2242 function defined in `libgcc.a'. */
2243 #define UMODSI3_LIBCALL "__umodi"
2245 /* A C string constant giving the name of the function to call for
2246 multiplication of one signed double-word by another. If you do not define
2247 this macro, the default name is used, which is `__muldi3', a function
2248 defined in `libgcc.a'. */
2249 #define MULDI3_LIBCALL "__mulll"
2251 /* A C string constant giving the name of the function to call for division of
2252 one signed double-word by another. If you do not define this macro, the
2253 default name is used, which is `__divdi3', a function defined in `libgcc.a'. */
2254 #define DIVDI3_LIBCALL "__divll"
2256 /* A C string constant giving the name of the function to call for division of
2257 one unsigned full-word by another. If you do not define this macro, the
2258 default name is used, which is `__udivdi3', a function defined in
2260 #define UDIVDI3_LIBCALL "__udivll"
2262 /* A C string constant giving the name of the function to call for the
2263 remainder in division of one signed double-word by another. If you do not
2264 define this macro, the default name is used, which is `__moddi3', a function
2265 defined in `libgcc.a'. */
2266 #define MODDI3_LIBCALL "__modll"
2268 /* A C string constant giving the name of the function to call for the
2269 remainder in division of one unsigned full-word by another. If you do not
2270 define this macro, the default name is used, which is `__umoddi3', a
2271 function defined in `libgcc.a'. */
2272 #define UMODDI3_LIBCALL "__umodll"
2274 /* Define this macro as a C statement that declares additional library routines
2275 renames existing ones. `init_optabs' calls this macro after initializing all
2276 the normal library routines. */
2277 #define INIT_TARGET_OPTABS \
2280 add_optab->handlers [(int) DImode].libfunc \
2281 = init_one_libfunc ("__addll"); \
2282 sub_optab->handlers [(int) DImode].libfunc \
2283 = init_one_libfunc ("__subll"); \
2284 and_optab->handlers [(int) DImode].libfunc \
2285 = init_one_libfunc ("__andll"); \
2286 ior_optab->handlers [(int) DImode].libfunc \
2287 = init_one_libfunc ("__orll"); \
2288 xor_optab->handlers [(int) DImode].libfunc \
2289 = init_one_libfunc ("__xorll"); \
2290 one_cmpl_optab->handlers [(int) DImode].libfunc \
2291 = init_one_libfunc ("__notll"); \
2292 add_optab->handlers [(int) SFmode].libfunc \
2293 = init_one_libfunc ("__addf"); \
2294 sub_optab->handlers [(int) SFmode].libfunc \
2295 = init_one_libfunc ("__subf"); \
2296 smul_optab->handlers [(int) SFmode].libfunc \
2297 = init_one_libfunc ("__mulf"); \
2298 sdiv_optab->handlers [(int) SFmode].libfunc \
2299 = init_one_libfunc ("__divf"); \
2300 add_optab->handlers [(int) DFmode].libfunc \
2301 = init_one_libfunc ("__addd"); \
2302 sub_optab->handlers [(int) DFmode].libfunc \
2303 = init_one_libfunc ("__subd"); \
2304 smul_optab->handlers [(int) DFmode].libfunc \
2305 = init_one_libfunc ("__muld"); \
2306 sdiv_optab->handlers [(int) DFmode].libfunc \
2307 = init_one_libfunc ("__divd"); \
2308 fixsfsi_libfunc = init_one_libfunc ("__ftoi"); \
2309 fixunssfsi_libfunc = init_one_libfunc ("__ftoui"); \
2310 fixsfdi_libfunc = init_one_libfunc ("__ftoll"); \
2311 fixunssfdi_libfunc = init_one_libfunc ("__ftoull"); \
2312 fixdfsi_libfunc = init_one_libfunc ("__dtoi"); \
2313 fixunsdfsi_libfunc = init_one_libfunc ("__dtoui"); \
2314 fixdfdi_libfunc = init_one_libfunc ("__dtoll"); \
2315 fixunsdfdi_libfunc = init_one_libfunc ("__dtoull"); \
2316 floatsisf_libfunc = init_one_libfunc ("__itof"); \
2317 floatdisf_libfunc = init_one_libfunc ("__lltof"); \
2318 floatsidf_libfunc = init_one_libfunc ("__itod"); \
2319 floatdidf_libfunc = init_one_libfunc ("__lltod"); \
2320 extendsfdf2_libfunc = init_one_libfunc ("__ftod"); \
2321 truncdfsf2_libfunc = init_one_libfunc ("__dtof"); \
2326 /* Addressing Modes. */
2328 /* A C expression that is 1 if the RTX X is a constant which is a valid
2329 address. On most machines, this can be defined as `CONSTANT_P (X)', but a
2330 few machines are more restrictive in which constant addresses are supported.
2332 `CONSTANT_P' accepts integer-values expressions whose values are not
2333 explicitly known, such as `symbol_ref', `label_ref', and `high' expressions
2334 and `const' arithmetic expressions, in addition to `const_int' and
2335 `const_double' expressions. */
2336 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
2338 /* A number, the maximum number of registers that can appear in a valid memory
2339 address. Note that it is up to you to specify a value equal to the maximum
2340 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */
2341 #define MAX_REGS_PER_ADDRESS 2
2343 /* A C compound statement with a conditional `goto LABEL;' executed if X (an
2344 RTX) is a legitimate memory address on the target machine for a memory
2345 operand of mode MODE.
2347 It usually pays to define several simpler macros to serve as subroutines for
2348 this one. Otherwise it may be too complicated to understand.
2350 This macro must exist in two variants: a strict variant and a non-strict
2351 one. The strict variant is used in the reload pass. It must be defined so
2352 that any pseudo-register that has not been allocated a hard register is
2353 considered a memory reference. In contexts where some kind of register is
2354 required, a pseudo-register with no hard register must be rejected.
2356 The non-strict variant is used in other passes. It must be defined to
2357 accept all pseudo-registers in every context where some kind of register is
2360 Compiler source files that want to use the strict variant of this macro
2361 define the macro `REG_OK_STRICT'. You should use an `#ifdef REG_OK_STRICT'
2362 conditional to define the strict variant in that case and the non-strict
2365 Subroutines to check for acceptable registers for various purposes (one for
2366 base registers, one for index registers, and so on) are typically among the
2367 subroutines used to define `GO_IF_LEGITIMATE_ADDRESS'. Then only these
2368 subroutine macros need have two variants; the higher levels of macros may be
2369 the same whether strict or not.
2371 Normally, constant addresses which are the sum of a `symbol_ref' and an
2372 integer are stored inside a `const' RTX to mark them as constant.
2373 Therefore, there is no need to recognize such sums specifically as
2374 legitimate addresses. Normally you would simply recognize any `const' as
2377 Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle constant sums that
2378 are not marked with `const'. It assumes that a naked `plus' indicates
2379 indexing. If so, then you *must* reject such naked constant sums as
2380 illegitimate addresses, so that none of them will be given to
2381 `PRINT_OPERAND_ADDRESS'.
2383 On some machines, whether a symbolic address is legitimate depends on the
2384 section that the address refers to. On these machines, define the macro
2385 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and
2386 then check for it here. When you see a `const', you will have to look
2387 inside it to find the `symbol_ref' in order to determine the section.
2389 The best way to modify the name string is by adding text to the beginning,
2390 with suitable punctuation to prevent any ambiguity. Allocate the new name
2391 in `saveable_obstack'. You will have to modify `ASM_OUTPUT_LABELREF' to
2392 remove and decode the added text and output the name accordingly, and define
2393 `(* targetm.strip_name_encoding)' to access the original name string.
2395 You can check the information stored here into the `symbol_ref' in the
2396 definitions of the macros `GO_IF_LEGITIMATE_ADDRESS' and
2397 `PRINT_OPERAND_ADDRESS'. */
2399 #ifdef REG_OK_STRICT
2400 #define REG_OK_STRICT_P 1
2402 #define REG_OK_STRICT_P 0
2405 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
2408 if (frv_legitimate_address_p (MODE, X, REG_OK_STRICT_P, FALSE)) \
2413 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
2414 use as a base register. For hard registers, it should always accept those
2415 which the hardware permits and reject the others. Whether the macro accepts
2416 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as
2417 described above. This usually requires two variant definitions, of which
2418 `REG_OK_STRICT' controls the one actually used. */
2419 #ifdef REG_OK_STRICT
2420 #define REG_OK_FOR_BASE_P(X) GPR_P (REGNO (X))
2422 #define REG_OK_FOR_BASE_P(X) GPR_AP_OR_PSEUDO_P (REGNO (X))
2425 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
2426 use as an index register.
2428 The difference between an index register and a base register is that the
2429 index register may be scaled. If an address involves the sum of two
2430 registers, neither one of them scaled, then either one may be labeled the
2431 "base" and the other the "index"; but whichever labeling is used must fit
2432 the machine's constraints of which registers may serve in each capacity.
2433 The compiler will try both labelings, looking for one that is valid, and
2434 will reload one or both registers only if neither labeling works. */
2435 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
2437 /* A C compound statement that attempts to replace X with a valid memory
2438 address for an operand of mode MODE. WIN will be a C statement label
2439 elsewhere in the code; the macro definition may use
2441 GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN);
2443 to avoid further processing if the address has become legitimate.
2445 X will always be the result of a call to `break_out_memory_refs', and OLDX
2446 will be the operand that was given to that function to produce X.
2448 The code generated by this macro should not alter the substructure of X. If
2449 it transforms X into a more legitimate form, it should assign X (which will
2450 always be a C variable) a new value.
2452 It is not necessary for this macro to come up with a legitimate address.
2453 The compiler has standard ways of doing so in all cases. In fact, it is
2454 safe for this macro to do nothing. But often a machine-dependent strategy
2455 can generate better code. */
2457 /* On the FRV, we use it to convert small data and pic references into using
2458 the appropriate pointer in the address. */
2459 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
2462 rtx newx = frv_legitimize_address (X, OLDX, MODE); \
2472 /* A C statement or compound statement with a conditional `goto LABEL;'
2473 executed if memory address X (an RTX) can have different meanings depending
2474 on the machine mode of the memory reference it is used for or if the address
2475 is valid for some modes but not others.
2477 Autoincrement and autodecrement addresses typically have mode-dependent
2478 effects because the amount of the increment or decrement is the size of the
2479 operand being addressed. Some machines have other mode-dependent addresses.
2480 Many RISC machines have no mode-dependent addresses.
2482 You may assume that ADDR is a valid address for the machine. */
2483 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL)
2485 /* A C expression that is nonzero if X is a legitimate constant for an
2486 immediate operand on the target machine. You can assume that X satisfies
2487 `CONSTANT_P', so you need not check this. In fact, `1' is a suitable
2488 definition for this macro on machines where anything `CONSTANT_P' is valid. */
2489 #define LEGITIMATE_CONSTANT_P(X) frv_legitimate_constant_p (X)
2491 /* The load-and-update commands allow pre-modification in addresses.
2492 The index has to be in a register. */
2493 #define HAVE_PRE_MODIFY_REG 1
2496 /* Returns a mode from class `MODE_CC' to be used when comparison operation
2497 code OP is applied to rtx X and Y. For example, on the SPARC,
2498 `SELECT_CC_MODE' is defined as (see *note Jump Patterns::. for a
2499 description of the reason for this definition)
2501 #define SELECT_CC_MODE(OP,X,Y) \
2502 (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
2503 ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \
2504 : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \
2505 || GET_CODE (X) == NEG) \
2506 ? CC_NOOVmode : CCmode))
2508 You need not define this macro if `EXTRA_CC_MODES' is not defined. */
2509 #define SELECT_CC_MODE(OP, X, Y) \
2510 (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
2512 : (((OP) == LEU || (OP) == GTU || (OP) == LTU || (OP) == GEU) \
2516 /* A C expression whose value is one if it is always safe to reverse a
2517 comparison whose mode is MODE. If `SELECT_CC_MODE' can ever return MODE for
2518 a floating-point inequality comparison, then `REVERSIBLE_CC_MODE (MODE)'
2521 You need not define this macro if it would always returns zero or if the
2522 floating-point format is anything other than `IEEE_FLOAT_FORMAT'. For
2523 example, here is the definition used on the SPARC, where floating-point
2524 inequality comparisons are always given `CCFPEmode':
2526 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) */
2528 /* On frv, don't consider floating point comparisons to be reversible. In
2529 theory, fp equality comparisons can be reversible */
2530 #define REVERSIBLE_CC_MODE(MODE) ((MODE) == CCmode || (MODE) == CC_UNSmode)
2532 /* Frv CCR_MODE's are not reversible. */
2533 #define REVERSE_CONDEXEC_PREDICATES_P(x,y) 0
2536 /* Describing Relative Costs of Operations. */
2538 /* A C expression for the cost of moving data from a register in class FROM to
2539 one in class TO. The classes are expressed using the enumeration values
2540 such as `GENERAL_REGS'. A value of 4 is the default; other values are
2541 interpreted relative to that.
2543 It is not required that the cost always equal 2 when FROM is the same as TO;
2544 on some machines it is expensive to move between registers if they are not
2547 If reload sees an insn consisting of a single `set' between two hard
2548 registers, and if `REGISTER_MOVE_COST' applied to their classes returns a
2549 value of 2, reload does not check to ensure that the constraints of the insn
2550 are met. Setting a cost of other than 2 will allow reload to verify that
2551 the constraints are met. You should do this if the `movM' pattern's
2552 constraints do not allow such copying. */
2553 #define REGISTER_MOVE_COST(MODE, FROM, TO) frv_register_move_cost (FROM, TO)
2555 /* A C expression for the cost of moving data of mode M between a register and
2556 memory. A value of 2 is the default; this cost is relative to those in
2557 `REGISTER_MOVE_COST'.
2559 If moving between registers and memory is more expensive than between two
2560 registers, you should define this macro to express the relative cost. */
2561 #define MEMORY_MOVE_COST(M,C,I) 4
2563 /* A C expression for the cost of a branch instruction. A value of 1 is the
2564 default; other values are interpreted relative to that. */
2566 /* Here are additional macros which do not specify precise relative costs, but
2567 only that certain actions are more expensive than GNU CC would ordinarily
2570 /* We used to default the branch cost to 2, but I changed it to 1, to avoid
2571 generating SCC instructions and or/and-ing them together, and then doing the
2572 branch on the result, which collectively generate much worse code. */
2573 #ifndef DEFAULT_BRANCH_COST
2574 #define DEFAULT_BRANCH_COST 1
2577 #define BRANCH_COST frv_branch_cost_int
2579 /* Define this macro as a C expression which is nonzero if accessing less than
2580 a word of memory (i.e. a `char' or a `short') is no faster than accessing a
2581 word of memory, i.e., if such access require more than one instruction or if
2582 there is no difference in cost between byte and (aligned) word loads.
2584 When this macro is not defined, the compiler will access a field by finding
2585 the smallest containing object; when it is defined, a fullword load will be
2586 used if alignment permits. Unless bytes accesses are faster than word
2587 accesses, using word accesses is preferable since it may eliminate
2588 subsequent memory access if subsequent accesses occur to other fields in the
2589 same word of the structure, but to different bytes. */
2590 #define SLOW_BYTE_ACCESS 1
2592 /* Define this macro if it is as good or better to call a constant function
2593 address than to call an address kept in a register. */
2594 #define NO_FUNCTION_CSE
2596 /* Define this macro if it is as good or better for a function to call itself
2597 with an explicit address than to call an address kept in a register. */
2598 #define NO_RECURSIVE_FUNCTION_CSE
2601 /* Dividing the output into sections. */
2603 /* A C expression whose value is a string containing the assembler operation
2604 that should precede instructions and read-only data. Normally `".text"' is
2606 #define TEXT_SECTION_ASM_OP "\t.text"
2608 /* A C expression whose value is a string containing the assembler operation to
2609 identify the following data as writable initialized data. Normally
2610 `".data"' is right. */
2611 #define DATA_SECTION_ASM_OP "\t.data"
2613 /* If defined, a C expression whose value is a string containing the
2614 assembler operation to identify the following data as
2615 uninitialized global data. If not defined, and neither
2616 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
2617 uninitialized global data will be output in the data section if
2618 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
2620 #define BSS_SECTION_ASM_OP "\t.section .bss,\"aw\""
2622 /* Short Data Support */
2623 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\""
2624 #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\""
2626 /* On svr4, we *do* have support for the .init and .fini sections, and we
2627 can put stuff in there to be executed before and after `main'. We let
2628 crtstuff.c and other files know this by defining the following symbols.
2629 The definitions say how to change sections to the .init and .fini
2630 sections. This is the same for all known svr4 assemblers.
2632 The standard System V.4 macros will work, but they look ugly in the
2633 assembly output, so redefine them. */
2635 #undef INIT_SECTION_ASM_OP
2636 #undef FINI_SECTION_ASM_OP
2637 #define INIT_SECTION_ASM_OP "\t.section .init,\"ax\""
2638 #define FINI_SECTION_ASM_OP "\t.section .fini,\"ax\""
2640 #undef CTORS_SECTION_ASM_OP
2641 #undef DTORS_SECTION_ASM_OP
2642 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"a\""
2643 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"a\""
2645 /* A C expression whose value is a string containing the assembler operation to
2646 switch to the fixup section that records all initialized pointers in a -fpic
2647 program so they can be changed program startup time if the program is loaded
2648 at a different address than linked for. */
2649 #define FIXUP_SECTION_ASM_OP "\t.section .rofixup,\"a\""
2651 /* A list of names for sections other than the standard two, which are
2652 `in_text' and `in_data'. You need not define this macro
2653 on a system with no other sections (that GCC needs to use). */
2654 #undef EXTRA_SECTIONS
2655 #define EXTRA_SECTIONS in_sdata, in_sbss, in_const, in_fixup
2657 /* One or more functions to be defined in "varasm.c". These
2658 functions should do jobs analogous to those of `text_section' and
2659 `data_section', for your additional sections. Do not define this
2660 macro if you do not define `EXTRA_SECTIONS'. */
2661 #undef EXTRA_SECTION_FUNCTIONS
2662 #define EXTRA_SECTION_FUNCTIONS \
2663 SDATA_SECTION_FUNCTION \
2664 SBSS_SECTION_FUNCTION \
2665 FIXUP_SECTION_FUNCTION
2667 #define SDATA_SECTION_FUNCTION \
2671 if (in_section != in_sdata) \
2673 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \
2674 in_section = in_sdata; \
2678 #define SBSS_SECTION_FUNCTION \
2682 if (in_section != in_sbss) \
2684 fprintf (asm_out_file, "%s\n", SBSS_SECTION_ASM_OP); \
2685 in_section = in_sbss; \
2689 #define FIXUP_SECTION_FUNCTION \
2693 if (in_section != in_fixup) \
2695 fprintf (asm_out_file, "%s\n", FIXUP_SECTION_ASM_OP); \
2696 in_section = in_fixup; \
2700 /* Position Independent Code. */
2702 /* A C expression that is nonzero if X is a legitimate immediate operand on the
2703 target machine when generating position independent code. You can assume
2704 that X satisfies `CONSTANT_P', so you need not check this. You can also
2705 assume FLAG_PIC is true, so you need not check it either. You need not
2706 define this macro if all constants (including `SYMBOL_REF') can be immediate
2707 operands when generating position independent code. */
2708 #define LEGITIMATE_PIC_OPERAND_P(X) \
2709 ( GET_CODE (X) == CONST_INT \
2710 || GET_CODE (X) == CONST_DOUBLE \
2711 || (GET_CODE (X) == HIGH && GET_CODE (XEXP (X, 0)) == CONST_INT) \
2712 || GET_CODE (X) == CONSTANT_P_RTX)
2715 /* The Overall Framework of an Assembler File. */
2717 /* A C string constant describing how to begin a comment in the target
2718 assembler language. The compiler assumes that the comment will end at the
2720 #define ASM_COMMENT_START ";"
2722 /* A C string constant for text to be output before each `asm' statement or
2723 group of consecutive ones. Normally this is `"#APP"', which is a comment
2724 that has no effect on most assemblers but tells the GNU assembler that it
2725 must check the lines that follow for all valid assembler constructs. */
2726 #define ASM_APP_ON "#APP\n"
2728 /* A C string constant for text to be output after each `asm' statement or
2729 group of consecutive ones. Normally this is `"#NO_APP"', which tells the
2730 GNU assembler to resume making the time-saving assumptions that are valid
2731 for ordinary compiler output. */
2732 #define ASM_APP_OFF "#NO_APP\n"
2735 /* Output of Data. */
2737 /* This is how to output a label to dwarf/dwarf2. */
2738 #define ASM_OUTPUT_DWARF_ADDR(STREAM, LABEL) \
2740 fprintf (STREAM, "\t.picptr\t"); \
2741 assemble_name (STREAM, LABEL); \
2744 /* Whether to emit the gas specific dwarf2 line number support. */
2745 #define DWARF2_ASM_LINE_DEBUG_INFO (TARGET_DEBUG_LOC)
2747 /* Output of Uninitialized Variables. */
2749 /* A C statement (sans semicolon) to output to the stdio stream STREAM the
2750 assembler definition of a local-common-label named NAME whose size is SIZE
2751 bytes. The variable ROUNDED is the size rounded up to whatever alignment
2754 Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
2755 before and after that, output the additional assembler syntax for defining
2756 the name, and a newline.
2758 This macro controls how the assembler definitions of uninitialized static
2759 variables are output. */
2760 #undef ASM_OUTPUT_LOCAL
2762 /* Like `ASM_OUTPUT_LOCAL' except takes the required alignment as a separate,
2763 explicit argument. If you define this macro, it is used in place of
2764 `ASM_OUTPUT_LOCAL', and gives you more flexibility in handling the required
2765 alignment of the variable. The alignment is specified as the number of
2768 Defined in svr4.h. */
2769 #undef ASM_OUTPUT_ALIGNED_LOCAL
2771 /* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */
2772 extern int size_directive_output;
2774 /* Like `ASM_OUTPUT_ALIGNED_LOCAL' except that it takes an additional
2775 parameter - the DECL of variable to be output, if there is one.
2776 This macro can be called with DECL == NULL_TREE. If you define
2777 this macro, it is used in place of `ASM_OUTPUT_LOCAL' and
2778 `ASM_OUTPUT_ALIGNED_LOCAL', and gives you more flexibility in
2779 handling the destination of the variable. */
2780 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
2781 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGN) \
2783 extern unsigned HOST_WIDE_INT g_switch_value; \
2785 if ((SIZE) > 0 && (SIZE) <= g_switch_value) \
2789 ASM_OUTPUT_ALIGN (STREAM, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \
2790 ASM_DECLARE_OBJECT_NAME (STREAM, NAME, DECL); \
2791 ASM_OUTPUT_SKIP (STREAM, (SIZE) ? (SIZE) : 1); \
2795 /* Output and Generation of Labels. */
2797 /* A C statement (sans semicolon) to output to the stdio stream STREAM the
2798 assembler definition of a label named NAME. Use the expression
2799 `assemble_name (STREAM, NAME)' to output the name itself; before and after
2800 that, output the additional assembler syntax for defining the name, and a
2802 #define ASM_OUTPUT_LABEL(STREAM, NAME) \
2804 assemble_name (STREAM, NAME); \
2805 fputs (":\n", STREAM); \
2808 /* Globalizing directive for a label. */
2809 #define GLOBAL_ASM_OP "\t.globl "
2811 /* A C statement to store into the string STRING a label whose name is made
2812 from the string PREFIX and the number NUM.
2814 This string, when output subsequently by `assemble_name', should produce the
2815 output that `(*targetm.asm_out.internal_label)' would produce with the same PREFIX
2818 If the string begins with `*', then `assemble_name' will output the rest of
2819 the string unchanged. It is often convenient for
2820 `ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the string doesn't
2821 start with `*', then `ASM_OUTPUT_LABELREF' gets to output the string, and
2822 may change it. (Of course, `ASM_OUTPUT_LABELREF' is also part of your
2823 machine description, so you should know what it does on your machine.)
2825 Defined in svr4.h. */
2826 #undef ASM_GENERATE_INTERNAL_LABEL
2827 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
2829 sprintf (LABEL, "*.%s%ld", PREFIX, (long)NUM); \
2833 /* Macros Controlling Initialization Routines. */
2835 /* If defined, a C string constant for the assembler operation to identify the
2836 following data as initialization code. If not defined, GNU CC will assume
2837 such a section does not exist. When you are using special sections for
2838 initialization and termination functions, this macro also controls how
2839 `crtstuff.c' and `libgcc2.c' arrange to run the initialization functions.
2841 Defined in svr4.h. */
2842 #undef INIT_SECTION_ASM_OP
2844 /* If defined, `main' will call `__main' despite the presence of
2845 `INIT_SECTION_ASM_OP'. This macro should be defined for systems where the
2846 init section is not actually run automatically, but is still useful for
2847 collecting the lists of constructors and destructors. */
2848 #define INVOKE__main
2850 /* Output of Assembler Instructions. */
2852 /* A C initializer containing the assembler's names for the machine registers,
2853 each one as a C string constant. This is what translates register numbers
2854 in the compiler into assembler language. */
2855 #define REGISTER_NAMES \
2857 "gr0", "sp", "fp", "gr3", "gr4", "gr5", "gr6", "gr7", \
2858 "gr8", "gr9", "gr10", "gr11", "gr12", "gr13", "gr14", "gr15", \
2859 "gr16", "gr17", "gr18", "gr19", "gr20", "gr21", "gr22", "gr23", \
2860 "gr24", "gr25", "gr26", "gr27", "gr28", "gr29", "gr30", "gr31", \
2861 "gr32", "gr33", "gr34", "gr35", "gr36", "gr37", "gr38", "gr39", \
2862 "gr40", "gr41", "gr42", "gr43", "gr44", "gr45", "gr46", "gr47", \
2863 "gr48", "gr49", "gr50", "gr51", "gr52", "gr53", "gr54", "gr55", \
2864 "gr56", "gr57", "gr58", "gr59", "gr60", "gr61", "gr62", "gr63", \
2866 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
2867 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \
2868 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \
2869 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \
2870 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \
2871 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \
2872 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \
2873 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \
2875 "fcc0", "fcc1", "fcc2", "fcc3", "icc0", "icc1", "icc2", "icc3", \
2876 "cc0", "cc1", "cc2", "cc3", "cc4", "cc5", "cc6", "cc7", \
2877 "acc0", "acc1", "acc2", "acc3", "acc4", "acc5", "acc6", "acc7", \
2878 "accg0","accg1","accg2","accg3","accg4","accg5","accg6","accg7", \
2882 /* Define this macro if you are using an unusual assembler that
2883 requires different names for the machine instructions.
2885 The definition is a C statement or statements which output an
2886 assembler instruction opcode to the stdio stream STREAM. The
2887 macro-operand PTR is a variable of type `char *' which points to
2888 the opcode name in its "internal" form--the form that is written
2889 in the machine description. The definition should output the
2890 opcode name to STREAM, performing any translation you desire, and
2891 increment the variable PTR to point at the end of the opcode so
2892 that it will not be output twice.
2894 In fact, your macro definition may process less than the entire
2895 opcode name, or more than the opcode name; but if you want to
2896 process text that includes `%'-sequences to substitute operands,
2897 you must take care of the substitution yourself. Just be sure to
2898 increment PTR over whatever text should not be output normally.
2900 If you need to look at the operand values, they can be found as the
2901 elements of `recog_operand'.
2903 If the macro definition does nothing, the instruction is output in
2906 #define ASM_OUTPUT_OPCODE(STREAM, PTR)\
2907 (PTR) = frv_asm_output_opcode (STREAM, PTR)
2909 /* If defined, a C statement to be executed just prior to the output
2910 of assembler code for INSN, to modify the extracted operands so
2911 they will be output differently.
2913 Here the argument OPVEC is the vector containing the operands
2914 extracted from INSN, and NOPERANDS is the number of elements of
2915 the vector which contain meaningful data for this insn. The
2916 contents of this vector are what will be used to convert the insn
2917 template into assembler code, so you can change the assembler
2918 output by changing the contents of the vector.
2920 This macro is useful when various assembler syntaxes share a single
2921 file of instruction patterns; by defining this macro differently,
2922 you can cause a large class of instructions to be output
2923 differently (such as with rearranged operands). Naturally,
2924 variations in assembler syntax affecting individual insn patterns
2925 ought to be handled by writing conditional output routines in
2928 If this macro is not defined, it is equivalent to a null statement. */
2930 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS)\
2931 frv_final_prescan_insn (INSN, OPVEC, NOPERANDS)
2934 /* A C compound statement to output to stdio stream STREAM the assembler syntax
2935 for an instruction operand X. X is an RTL expression.
2937 CODE is a value that can be used to specify one of several ways of printing
2938 the operand. It is used when identical operands must be printed differently
2939 depending on the context. CODE comes from the `%' specification that was
2940 used to request printing of the operand. If the specification was just
2941 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is
2942 the ASCII code for LTR.
2944 If X is a register, this macro should print the register's name. The names
2945 can be found in an array `reg_names' whose type is `char *[]'. `reg_names'
2946 is initialized from `REGISTER_NAMES'.
2948 When the machine description has a specification `%PUNCT' (a `%' followed by
2949 a punctuation character), this macro is called with a null pointer for X and
2950 the punctuation character for CODE. */
2951 #define PRINT_OPERAND(STREAM, X, CODE) frv_print_operand (STREAM, X, CODE)
2953 /* A C expression which evaluates to true if CODE is a valid punctuation
2954 character for use in the `PRINT_OPERAND' macro. If
2955 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation
2956 characters (except for the standard one, `%') are used in this way. */
2958 # == hint operand -- always zero for now
2959 @ == small data base register (gr16)
2960 ~ == pic register (gr17)
2961 * == temporary integer CCR register (cr3)
2962 & == temporary integer ICC register (icc3) */
2963 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
2964 ((CODE) == '.' || (CODE) == '#' || (CODE) == '@' || (CODE) == '~' \
2965 || (CODE) == '*' || (CODE) == '&')
2967 /* A C compound statement to output to stdio stream STREAM the assembler syntax
2968 for an instruction operand that is a memory reference whose address is X. X
2969 is an RTL expression.
2971 On some machines, the syntax for a symbolic address depends on the section
2972 that the address refers to. On these machines, define the macro
2973 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and
2974 then check for it here.
2976 This declaration must be present. */
2977 #define PRINT_OPERAND_ADDRESS(STREAM, X) frv_print_operand_address (STREAM, X)
2979 /* If defined, C string expressions to be used for the `%R', `%L', `%U', and
2980 `%I' options of `asm_fprintf' (see `final.c'). These are useful when a
2981 single `md' file must support multiple assembler formats. In that case, the
2982 various `tm.h' files can define these macros differently.
2984 USER_LABEL_PREFIX is defined in svr4.h. */
2985 #undef USER_LABEL_PREFIX
2986 #define USER_LABEL_PREFIX ""
2987 #define REGISTER_PREFIX ""
2988 #define LOCAL_LABEL_PREFIX "."
2989 #define IMMEDIATE_PREFIX "#"
2992 /* Output of dispatch tables. */
2994 /* This macro should be provided on machines where the addresses in a dispatch
2995 table are relative to the table's own address.
2997 The definition should be a C statement to output to the stdio stream STREAM
2998 an assembler pseudo-instruction to generate a difference between two labels.
2999 VALUE and REL are the numbers of two internal labels. The definitions of
3000 these labels are output using `(*targetm.asm_out.internal_label)', and they must be
3001 printed in the same way here. For example,
3003 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */
3004 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
3005 fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL)
3007 /* This macro should be provided on machines where the addresses in a dispatch
3010 The definition should be a C statement to output to the stdio stream STREAM
3011 an assembler pseudo-instruction to generate a reference to a label. VALUE
3012 is the number of an internal label whose definition is output using
3013 `(*targetm.asm_out.internal_label)'. For example,
3015 fprintf (STREAM, "\t.word L%d\n", VALUE) */
3016 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
3017 fprintf (STREAM, "\t.word .L%d\n", VALUE)
3019 /* Define this if the label before a jump-table needs to be output specially.
3020 The first three arguments are the same as for `(*targetm.asm_out.internal_label)';
3021 the fourth argument is the jump-table which follows (a `jump_insn'
3022 containing an `addr_vec' or `addr_diff_vec').
3024 This feature is used on system V to output a `swbeg' statement for the
3027 If this macro is not defined, these labels are output with
3028 `(*targetm.asm_out.internal_label)'.
3030 Defined in svr4.h. */
3031 /* When generating embedded PIC or mips16 code we want to put the jump
3032 table in the .text section. In all other cases, we want to put the
3033 jump table in the .rdata section. Unfortunately, we can't use
3034 JUMP_TABLES_IN_TEXT_SECTION, because it is not conditional.
3035 Instead, we use ASM_OUTPUT_CASE_LABEL to switch back to the .text
3036 section if appropriate. */
3038 #undef ASM_OUTPUT_CASE_LABEL
3039 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
3042 function_section (current_function_decl); \
3043 (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM); \
3046 /* Define this to determine whether case statement labels are relative to
3047 the start of the case statement or not. */
3049 #define CASE_VECTOR_PC_RELATIVE (flag_pic)
3052 /* Assembler Commands for Exception Regions. */
3054 /* Define this macro to 0 if your target supports DWARF 2 frame unwind
3055 information, but it does not yet work with exception handling. Otherwise,
3056 if your target supports this information (if it defines
3057 `INCOMING_RETURN_ADDR_RTX' and either `UNALIGNED_INT_ASM_OP' or
3058 `OBJECT_FORMAT_ELF'), GCC will provide a default definition of 1.
3060 If this macro is defined to 1, the DWARF 2 unwinder will be the default
3061 exception handling mechanism; otherwise, setjmp/longjmp will be used by
3064 If this macro is defined to anything, the DWARF 2 unwinder will be used
3065 instead of inline unwinders and __unwind_function in the non-setjmp case. */
3066 #define DWARF2_UNWIND_INFO 1
3068 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LR_REGNO)
3070 /* Assembler Commands for Alignment. */
3072 /* A C statement to output to the stdio stream STREAM an assembler instruction
3073 to advance the location counter by NBYTES bytes. Those bytes should be zero
3074 when loaded. NBYTES will be a C expression of type `int'.
3076 Defined in svr4.h. */
3077 #undef ASM_OUTPUT_SKIP
3078 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
3079 fprintf (STREAM, "\t.zero\t%u\n", (int)(NBYTES))
3081 /* A C statement to output to the stdio stream STREAM an assembler command to
3082 advance the location counter to a multiple of 2 to the POWER bytes. POWER
3083 will be a C expression of type `int'. */
3084 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \
3085 fprintf ((STREAM), "\t.p2align %d\n", (POWER))
3088 /* Macros Affecting all Debug Formats. */
3090 /* A C expression that returns the DBX register number for the compiler
3091 register number REGNO. In simple cases, the value of this expression may be
3092 REGNO itself. But sometimes there are some registers that the compiler
3093 knows about and DBX does not, or vice versa. In such cases, some register
3094 may need to have one number in the compiler and another for DBX.
3096 If two registers have consecutive numbers inside GNU CC, and they can be
3097 used as a pair to hold a multiword value, then they *must* have consecutive
3098 numbers after renumbering with `DBX_REGISTER_NUMBER'. Otherwise, debuggers
3099 will be unable to access such a pair, because they expect register pairs to
3100 be consecutive in their own numbering scheme.
3102 If you find yourself defining `DBX_REGISTER_NUMBER' in way that does not
3103 preserve register pairs, then what you must do instead is redefine the
3104 actual register numbering scheme.
3106 This declaration is required. */
3107 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
3109 /* A C expression that returns the type of debugging output GNU CC produces
3110 when the user specifies `-g' or `-ggdb'. Define this if you have arranged
3111 for GNU CC to support more than one format of debugging output. Currently,
3112 the allowable values are `DBX_DEBUG', `SDB_DEBUG', `DWARF_DEBUG',
3113 `DWARF2_DEBUG', and `XCOFF_DEBUG'.
3115 The value of this macro only affects the default debugging output; the user
3116 can always get a specific type of output by using `-gstabs', `-gcoff',
3117 `-gdwarf-1', `-gdwarf-2', or `-gxcoff'.
3119 Defined in svr4.h. */
3120 #undef PREFERRED_DEBUGGING_TYPE
3121 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
3123 /* Miscellaneous Parameters. */
3125 /* Define this if you have defined special-purpose predicates in the file
3126 `MACHINE.c'. This macro is called within an initializer of an array of
3127 structures. The first field in the structure is the name of a predicate and
3128 the second field is an array of rtl codes. For each predicate, list all rtl
3129 codes that can be in expressions matched by the predicate. The list should
3130 have a trailing comma. Here is an example of two entries in the list for a
3131 typical RISC machine:
3133 #define PREDICATE_CODES \
3134 {"gen_reg_rtx_operand", {SUBREG, REG}}, \
3135 {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}},
3137 Defining this macro does not affect the generated code (however, incorrect
3138 definitions that omit an rtl code that may be matched by the predicate can
3139 cause the compiler to malfunction). Instead, it allows the table built by
3140 `genrecog' to be more compact and efficient, thus speeding up the compiler.
3141 The most important predicates to include in the list specified by this macro
3142 are thoses used in the most insn patterns. */
3143 #define PREDICATE_CODES \
3144 { "integer_register_operand", { REG, SUBREG }}, \
3145 { "frv_load_operand", { REG, SUBREG, MEM }}, \
3146 { "gpr_no_subreg_operand", { REG }}, \
3147 { "gpr_or_fpr_operand", { REG, SUBREG }}, \
3148 { "gpr_or_int12_operand", { REG, SUBREG, CONST_INT }}, \
3149 { "gpr_fpr_or_int12_operand", { REG, SUBREG, CONST_INT }}, \
3150 { "gpr_or_int10_operand", { REG, SUBREG, CONST_INT }}, \
3151 { "gpr_or_int_operand", { REG, SUBREG, CONST_INT }}, \
3152 { "move_source_operand", { REG, SUBREG, CONST_INT, MEM, \
3153 CONST_DOUBLE, CONST, \
3154 SYMBOL_REF, LABEL_REF }}, \
3155 { "move_destination_operand", { REG, SUBREG, MEM }}, \
3156 { "condexec_source_operand", { REG, SUBREG, CONST_INT, MEM, \
3158 { "condexec_dest_operand", { REG, SUBREG, MEM }}, \
3159 { "reg_or_0_operand", { REG, SUBREG, CONST_INT }}, \
3160 { "lr_operand", { REG }}, \
3161 { "gpr_or_memory_operand", { REG, SUBREG, MEM }}, \
3162 { "fpr_or_memory_operand", { REG, SUBREG, MEM }}, \
3163 { "int12_operand", { CONST_INT }}, \
3164 { "int_2word_operand", { CONST_INT, CONST_DOUBLE, \
3165 SYMBOL_REF, LABEL_REF, CONST }}, \
3166 { "pic_register_operand", { REG }}, \
3167 { "pic_symbolic_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \
3168 { "small_data_register_operand", { REG }}, \
3169 { "small_data_symbolic_operand", { SYMBOL_REF, CONST }}, \
3170 { "icc_operand", { REG }}, \
3171 { "fcc_operand", { REG }}, \
3172 { "cc_operand", { REG }}, \
3173 { "icr_operand", { REG }}, \
3174 { "fcr_operand", { REG }}, \
3175 { "cr_operand", { REG }}, \
3176 { "fpr_operand", { REG, SUBREG }}, \
3177 { "even_reg_operand", { REG, SUBREG }}, \
3178 { "odd_reg_operand", { REG, SUBREG }}, \
3179 { "even_gpr_operand", { REG, SUBREG }}, \
3180 { "odd_gpr_operand", { REG, SUBREG }}, \
3181 { "quad_fpr_operand", { REG, SUBREG }}, \
3182 { "even_fpr_operand", { REG, SUBREG }}, \
3183 { "odd_fpr_operand", { REG, SUBREG }}, \
3184 { "dbl_memory_one_insn_operand", { MEM }}, \
3185 { "dbl_memory_two_insn_operand", { MEM }}, \
3186 { "call_operand", { REG, SUBREG, PLUS, CONST_INT, \
3187 SYMBOL_REF, LABEL_REF, CONST }}, \
3188 { "upper_int16_operand", { CONST_INT }}, \
3189 { "uint16_operand", { CONST_INT }}, \
3190 { "relational_operator", { EQ, NE, LE, LT, GE, GT, \
3191 LEU, LTU, GEU, GTU }}, \
3192 { "signed_relational_operator", { EQ, NE, LE, LT, GE, GT }}, \
3193 { "unsigned_relational_operator", { LEU, LTU, GEU, GTU }}, \
3194 { "float_relational_operator", { EQ, NE, LE, LT, GE, GT }}, \
3195 { "ccr_eqne_operator", { EQ, NE }}, \
3196 { "minmax_operator", { SMIN, SMAX, UMIN, UMAX }}, \
3197 { "condexec_si_binary_operator", { PLUS, MINUS, AND, IOR, XOR, \
3198 ASHIFT, ASHIFTRT, LSHIFTRT }}, \
3199 { "condexec_si_divide_operator", { DIV, UDIV }}, \
3200 { "condexec_si_unary_operator", { NOT, NEG }}, \
3201 { "condexec_sf_binary_operator", { PLUS, MINUS, MULT, DIV }}, \
3202 { "condexec_sf_unary_operator", { ABS, NEG, SQRT }}, \
3203 { "intop_compare_operator", { PLUS, MINUS, AND, IOR, XOR, \
3204 ASHIFT, ASHIFTRT, LSHIFTRT }}, \
3205 { "condexec_intop_cmp_operator", { PLUS, MINUS, AND, IOR, XOR, \
3206 ASHIFT, ASHIFTRT, LSHIFTRT }}, \
3207 { "fpr_or_int6_operand", { REG, SUBREG, CONST_INT }}, \
3208 { "int6_operand", { CONST_INT }}, \
3209 { "int5_operand", { CONST_INT }}, \
3210 { "uint5_operand", { CONST_INT }}, \
3211 { "uint4_operand", { CONST_INT }}, \
3212 { "uint1_operand", { CONST_INT }}, \
3213 { "acc_operand", { REG, SUBREG }}, \
3214 { "even_acc_operand", { REG, SUBREG }}, \
3215 { "quad_acc_operand", { REG, SUBREG }}, \
3216 { "accg_operand", { REG, SUBREG }},
3218 /* An alias for a machine mode name. This is the machine mode that elements of
3219 a jump-table should have. */
3220 #define CASE_VECTOR_MODE SImode
3222 /* Define this macro if operations between registers with integral mode smaller
3223 than a word are always performed on the entire register. Most RISC machines
3224 have this property and most CISC machines do not. */
3225 #define WORD_REGISTER_OPERATIONS
3227 /* Define this macro to be a C expression indicating when insns that read
3228 memory in MODE, an integral mode narrower than a word, set the bits outside
3229 of MODE to be either the sign-extension or the zero-extension of the data
3230 read. Return `SIGN_EXTEND' for values of MODE for which the insn
3231 sign-extends, `ZERO_EXTEND' for which it zero-extends, and `NIL' for other
3234 This macro is not called with MODE non-integral or with a width greater than
3235 or equal to `BITS_PER_WORD', so you may return any value in this case. Do
3236 not define this macro if it would always return `NIL'. On machines where
3237 this macro is defined, you will normally define it as the constant
3238 `SIGN_EXTEND' or `ZERO_EXTEND'. */
3239 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
3241 /* Define if loading short immediate values into registers sign extends. */
3242 #define SHORT_IMMEDIATES_SIGN_EXTEND
3244 /* The maximum number of bytes that a single instruction can move quickly from
3245 memory to memory. */
3248 /* A C expression which is nonzero if on this machine it is safe to "convert"
3249 an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
3250 than INPREC) by merely operating on it as if it had only OUTPREC bits.
3252 On many machines, this expression can be 1.
3254 When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for
3255 which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the
3256 case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve
3258 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
3260 /* An alias for the machine mode for pointers. On most machines, define this
3261 to be the integer mode corresponding to the width of a hardware pointer;
3262 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines
3263 you must define this to be one of the partial integer modes, such as
3266 The width of `Pmode' must be at least as large as the value of
3267 `POINTER_SIZE'. If it is not equal, you must define the macro
3268 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */
3269 #define Pmode SImode
3271 /* An alias for the machine mode used for memory references to functions being
3272 called, in `call' RTL expressions. On most machines this should be
3274 #define FUNCTION_MODE QImode
3276 /* Define this macro to handle System V style pragmas: #pragma pack and
3277 #pragma weak. Note, #pragma weak will only be supported if SUPPORT_WEAK is
3280 Defined in svr4.h. */
3281 #define HANDLE_SYSV_PRAGMA 1
3283 /* A C expression for the maximum number of instructions to execute via
3284 conditional execution instructions instead of a branch. A value of
3285 BRANCH_COST+1 is the default if the machine does not use
3286 cc0, and 1 if it does use cc0. */
3287 #define MAX_CONDITIONAL_EXECUTE frv_condexec_insns
3289 /* Default value of MAX_CONDITIONAL_EXECUTE if no -mcond-exec-insns= */
3290 #define DEFAULT_CONDEXEC_INSNS 8
3292 /* A C expression to modify the code described by the conditional if
3293 information CE_INFO, possibly updating the tests in TRUE_EXPR, and
3294 FALSE_EXPR for converting if-then and if-then-else code to conditional
3295 instructions. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if the
3296 tests cannot be converted. */
3297 #define IFCVT_MODIFY_TESTS(CE_INFO, TRUE_EXPR, FALSE_EXPR) \
3298 frv_ifcvt_modify_tests (CE_INFO, &TRUE_EXPR, &FALSE_EXPR)
3300 /* A C expression to modify the code described by the conditional if
3301 information CE_INFO, for the basic block BB, possibly updating the tests in
3302 TRUE_EXPR, and FALSE_EXPR for converting the && and || parts of if-then or
3303 if-then-else code to conditional instructions. OLD_TRUE and OLD_FALSE are
3304 the previous tests. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if
3305 the tests cannot be converted. */
3306 #define IFCVT_MODIFY_MULTIPLE_TESTS(CE_INFO, BB, TRUE_EXPR, FALSE_EXPR) \
3307 frv_ifcvt_modify_multiple_tests (CE_INFO, BB, &TRUE_EXPR, &FALSE_EXPR)
3309 /* A C expression to modify the code described by the conditional if
3310 information CE_INFO with the new PATTERN in INSN. If PATTERN is a null
3311 pointer after the IFCVT_MODIFY_INSN macro executes, it is assumed that that
3312 insn cannot be converted to be executed conditionally. */
3313 #define IFCVT_MODIFY_INSN(CE_INFO, PATTERN, INSN) \
3314 (PATTERN) = frv_ifcvt_modify_insn (CE_INFO, PATTERN, INSN)
3316 /* A C expression to perform any final machine dependent modifications in
3317 converting code to conditional execution in the code described by the
3318 conditional if information CE_INFO. */
3319 #define IFCVT_MODIFY_FINAL(CE_INFO) frv_ifcvt_modify_final (CE_INFO)
3321 /* A C expression to cancel any machine dependent modifications in converting
3322 code to conditional execution in the code described by the conditional if
3323 information CE_INFO. */
3324 #define IFCVT_MODIFY_CANCEL(CE_INFO) frv_ifcvt_modify_cancel (CE_INFO)
3326 /* Initialize the extra fields provided by IFCVT_EXTRA_FIELDS. */
3327 #define IFCVT_INIT_EXTRA_FIELDS(CE_INFO) frv_ifcvt_init_extra_fields (CE_INFO)
3329 /* Indicate how many instructions can be issued at the same time. */
3330 #define ISSUE_RATE \
3331 (! TARGET_PACK ? 1 \
3332 : (frv_cpu_type == FRV_CPU_GENERIC \
3333 || frv_cpu_type == FRV_CPU_FR500 \
3334 || frv_cpu_type == FRV_CPU_TOMCAT) ? 4 \
3335 : frv_cpu_type == FRV_CPU_FR400 ? 2 : 1)
3337 /* Set and clear whether this insn begins a VLIW insn. */
3338 #define CLEAR_VLIW_START(INSN) PUT_MODE (INSN, VOIDmode)
3339 #define SET_VLIW_START(INSN) PUT_MODE (INSN, TImode)
3341 /* The definition of the following macro results in that the 2nd jump
3342 optimization (after the 2nd insn scheduling) is minimal. It is
3343 necessary to define when start cycle marks of insns (TImode is used
3344 for this) is used for VLIW insn packing. Some jump optimizations
3345 make such marks invalid. These marks are corrected for some
3346 (minimal) optimizations. ??? Probably the macro is temporary.
3347 Final solution could making the 2nd jump optimizations before the
3348 2nd instruction scheduling or corrections of the marks for all jump
3349 optimizations. Although some jump optimizations are actually
3350 deoptimizations for VLIW (super-scalar) processors. */
3352 #define MINIMAL_SECOND_JUMP_OPTIMIZATION
3354 /* Return true if parallel operations are expected to be emitted via the
3356 #define PACKING_FLAG_USED_P() \
3357 (optimize && flag_schedule_insns_after_reload && ISSUE_RATE > 1)
3359 /* If the following macro is defined and nonzero and deterministic
3360 finite state automata are used for pipeline hazard recognition, the
3361 code making resource-constrained software pipelining is on. */
3362 #define RCSP_SOFTWARE_PIPELINING 1
3364 /* If the following macro is defined and nonzero and deterministic
3365 finite state automata are used for pipeline hazard recognition, we
3366 will try to exchange insns in queue ready to improve the schedule.
3367 The more macro value, the more tries will be made. */
3368 #define FIRST_CYCLE_MULTIPASS_SCHEDULING 1
3370 /* The following macro is used only when value of
3371 FIRST_CYCLE_MULTIPASS_SCHEDULING is nonzero. The more macro value,
3372 the more tries will be made to choose better schedule. If the
3373 macro value is zero or negative there will be no multi-pass
3375 #define FIRST_CYCLE_MULTIPASS_SCHEDULING_LOOKAHEAD frv_sched_lookahead
3386 FRV_BUILTIN_MADDHSS,
3387 FRV_BUILTIN_MADDHUS,
3388 FRV_BUILTIN_MSUBHSS,
3389 FRV_BUILTIN_MSUBHUS,
3391 FRV_BUILTIN_MQADDHSS,
3392 FRV_BUILTIN_MQADDHUS,
3393 FRV_BUILTIN_MQSUBHSS,
3394 FRV_BUILTIN_MQSUBHUS,
3395 FRV_BUILTIN_MUNPACKH,
3396 FRV_BUILTIN_MDPACKH,
3407 FRV_BUILTIN_MEXPDHW,
3408 FRV_BUILTIN_MEXPDHD,
3411 FRV_BUILTIN_MMULXHS,
3412 FRV_BUILTIN_MMULXHU,
3417 FRV_BUILTIN_MQMULHS,
3418 FRV_BUILTIN_MQMULHU,
3419 FRV_BUILTIN_MQMULXHU,
3420 FRV_BUILTIN_MQMULXHS,
3421 FRV_BUILTIN_MQMACHS,
3422 FRV_BUILTIN_MQMACHU,
3427 FRV_BUILTIN_MQCPXRS,
3428 FRV_BUILTIN_MQCPXRU,
3429 FRV_BUILTIN_MQCPXIS,
3430 FRV_BUILTIN_MQCPXIU,
3434 FRV_BUILTIN_MWTACCG,
3436 FRV_BUILTIN_MRDACCG,
3438 FRV_BUILTIN_MCLRACC,
3439 FRV_BUILTIN_MCLRACCA,
3440 FRV_BUILTIN_MDUNPACKH,
3442 FRV_BUILTIN_MQXMACHS,
3443 FRV_BUILTIN_MQXMACXHS,
3444 FRV_BUILTIN_MQMACXHS,
3445 FRV_BUILTIN_MADDACCS,
3446 FRV_BUILTIN_MSUBACCS,
3447 FRV_BUILTIN_MASACCS,
3448 FRV_BUILTIN_MDADDACCS,
3449 FRV_BUILTIN_MDSUBACCS,
3450 FRV_BUILTIN_MDASACCS,
3452 FRV_BUILTIN_MDROTLI,
3455 FRV_BUILTIN_MDCUTSSI,
3456 FRV_BUILTIN_MQSATHS,
3457 FRV_BUILTIN_MHSETLOS,
3458 FRV_BUILTIN_MHSETLOH,
3459 FRV_BUILTIN_MHSETHIS,
3460 FRV_BUILTIN_MHSETHIH,
3461 FRV_BUILTIN_MHDSETS,
3465 /* Enable prototypes on the call rtl functions. */
3466 #define MD_CALL_PROTOTYPES 1
3468 extern GTY(()) rtx frv_compare_op0; /* operand save for */
3469 extern GTY(()) rtx frv_compare_op1; /* comparison generation */
3471 #endif /* __FRV_H__ */
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