1 /* Definitions for GCC. Part of the machine description for CRIS.
2 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Contributed by Axis Communications. Written by Hans-Peter Nilsson.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GCC is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING. If not, write to
20 the Free Software Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* After the first "Node:" comment comes all preprocessor directives and
24 attached declarations described in the info files, the "Using and
25 Porting GCC" manual (uapgcc), in the same order as found in the "Target
26 macros" section in the gcc-2.9x CVS edition of 2000-03-17. FIXME: Not
27 really, but needs an update anyway.
29 There is no generic copy-of-uapgcc comment, you'll have to see uapgcc
30 for that. If applicable, there is a CRIS-specific comment. The order
31 of macro definitions follow the order in the manual. Every section in
32 the manual (node in the info pages) has an introductory `Node:
33 <subchapter>' comment. If no macros are defined for a section, only
34 the section-comment is present. */
36 /* Note that other header files (e.g. config/elfos.h, config/linux.h,
37 config/cris/linux.h and config/cris/aout.h) are responsible for lots of
38 settings not repeated below. This file contains general CRIS
39 definitions and definitions for the cris-*-elf subtarget. */
41 /* Replacement for REG_P since it does not match SUBREGs. Happens for
42 testcase Axis-20000320 with gcc-2.9x. */
44 (REG_P (x) || (GET_CODE (x) == SUBREG && REG_P (XEXP (x, 0))))
46 /* Last register in main register bank r0..r15. */
47 #define CRIS_LAST_GENERAL_REGISTER 15
49 /* Descriptions of registers used for arguments. */
50 #define CRIS_FIRST_ARG_REG 10
51 #define CRIS_MAX_ARGS_IN_REGS 4
53 /* Other convenience definitions. */
54 #define CRIS_PC_REGNUM 15
55 #define CRIS_SRP_REGNUM 16
57 /* Most of the time, we need the index into the register-names array.
58 When passing debug-info, we need the real register number. */
59 #define CRIS_CANONICAL_SRP_REGNUM (16 + 11)
60 #define CRIS_CANONICAL_MOF_REGNUM (16 + 7)
62 /* When generating PIC, these suffixes are added to the names of non-local
63 functions when being output. Contrary to other ports, we have offsets
64 relative to the GOT, not the PC. We might implement PC-relative PLT
65 semantics later for the general case; they are used in some cases right
66 now, such as MI thunks. */
67 #define CRIS_GOTPLT_SUFFIX ":GOTPLT"
68 #define CRIS_PLT_GOTOFFSET_SUFFIX ":PLTG"
69 #define CRIS_PLT_PCOFFSET_SUFFIX ":PLT"
71 /* If you tweak this, don't forget to check cris_expand_builtin_va_arg. */
72 #define CRIS_FUNCTION_ARG_SIZE(MODE, TYPE) \
73 ((MODE) != BLKmode ? GET_MODE_SIZE (MODE) \
74 : (unsigned) int_size_in_bytes (TYPE))
76 /* Check for max allowed stackframe. A "const char *" to be parsed. */
77 extern const char *cris_max_stackframe_str;
79 /* Which CPU version this is. A "const char *" to be parsed. */
80 extern const char *cris_cpu_str;
82 /* Which CPU version this is. The parsed and adjusted cris_cpu_str. */
83 extern int cris_cpu_version;
85 /* Which CPU version to tune for. A "const char *" to be parsed. */
86 extern const char *cris_tune_str;
88 /* The argument to "-melinux-stacksize=". We don't parse it currently;
89 it's just passed on to the linker. We might want to do something
91 extern const char *cris_elinux_stacksize_str;
93 /* Changing the order used to be necessary to put the fourth __make_dp
94 argument (a DImode parameter) in registers, to fit with the libfunc
95 parameter passing scheme used for intrinsic functions. FIXME: Check
96 performance and maybe remove definition from TARGET_LIBGCC2_CFLAGS now
97 that it isn't strictly necessary. We used to do this through
98 TARGET_LIBGCC2_CFLAGS, but that became increasingly difficult as the
99 parenthesis (that needed quoting) travels through several layers of
100 make and shell invocations. */
102 #define __make_dp(a,b,c,d) __cris_make_dp(d,a,b,c)
108 /* When using make with defaults.mak for Sun this will handily remove
109 any "-target sun*" switches. */
110 /* We need to override any previous definitions (linux.h) */
111 #undef WORD_SWITCH_TAKES_ARG
112 #define WORD_SWITCH_TAKES_ARG(STR) \
113 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \
114 || !strcmp (STR, "target"))
116 /* Also provide canonical vN definitions when user specifies an alias.
117 Note that -melf overrides -maout. */
120 "%{mtune=*:-D__tune_%* %{mtune=v*:-D__CRIS_arch_tune=%*}}\
121 %{mtune=etrax4:-D__tune_v3 -D__CRIS_arch_tune=3}\
122 %{mtune=etrax100:-D__tune_v8 -D__CRIS_arch_tune=8}\
123 %{mtune=svinto:-D__tune_v8 -D__CRIS_arch_tune=8}\
124 %{mtune=etrax100lx:-D__tune_v10 -D__CRIS_arch_tune=10}\
125 %{mtune=ng:-D__tune_v10 -D__CRIS_arch_tune=10}\
126 %{mcpu=*:-D__arch_%* %{mcpu=v*:-D__CRIS_arch_version=%*}}\
127 %{mcpu=etrax4:-D__arch_v3 -D__CRIS_arch_version=3}\
128 %{mcpu=etrax100:-D__arch_v8 -D__CRIS_arch_version=8}\
129 %{mcpu=svinto:-D__arch_v8 -D__CRIS_arch_version=8}\
130 %{mcpu=etrax100lx:-D__arch_v10 -D__CRIS_arch_version=10}\
131 %{mcpu=ng:-D__arch_v10 -D__CRIS_arch_version=10}\
132 %{march=*:-D__arch_%* %{march=v*:-D__CRIS_arch_version=%*}}\
133 %{march=etrax4:-D__arch_v3 -D__CRIS_arch_version=3}\
134 %{march=etrax100:-D__arch_v8 -D__CRIS_arch_version=8}\
135 %{march=svinto:-D__arch_v8 -D__CRIS_arch_version=8}\
136 %{march=etrax100lx:-D__arch_v10 -D__CRIS_arch_version=10}\
137 %{march=ng:-D__arch_v10 -D__CRIS_arch_version=10}\
138 %{metrax100:-D__arch__v8 -D__CRIS_arch_version=8}\
139 %{metrax4:-D__arch__v3 -D__CRIS_arch_version=3}\
142 /* For the cris-*-elf subtarget. */
143 #define CRIS_CPP_SUBTARGET_SPEC \
144 "%{mbest-lib-options:\
145 %{!moverride-best-lib-options:\
146 %{!march=*:%{!metrax*:%{!mcpu=*:-D__tune_v10 -D__CRIS_arch_tune=10}}}}}"
148 /* Remove those Sun-make "target" switches. */
149 /* Override previous definitions (linux.h). */
153 %{metrax4:-march=v3}\
154 %{metrax100:-march=v8}\
157 /* For the cris-*-elf subtarget. */
158 #define CRIS_CC1_SUBTARGET_SPEC \
160 %{mbest-lib-options:\
161 %{!moverride-best-lib-options:\
162 %{!march=*:%{!mcpu=*:-mtune=v10 -D__CRIS_arch_tune=10}}\
163 %{!finhibit-size-directive:\
164 %{!fno-function-sections: -ffunction-sections}\
165 %{!fno-data-sections: -fdata-sections}}}}"
167 /* This adds to CC1_SPEC. When bugs are removed from -fvtable-gc
168 (-fforce-addr causes invalid .vtable_entry asm in tinfo.cc and
169 nothing at all works in GCC 3.0-pre), add this line:
170 "%{mbest-lib-options:%{!moverride-best-lib-options:\
171 %{!melinux:%{!maout|melf:%{!fno-vtable-gc:-fvtable-gc}}}}}". */
172 #define CC1PLUS_SPEC ""
174 #ifdef HAVE_AS_NO_MUL_BUG_ABORT_OPTION
175 #define MAYBE_AS_NO_MUL_BUG_ABORT \
176 "%{mno-mul-bug-workaround:-no-mul-bug-abort} "
178 #define MAYBE_AS_NO_MUL_BUG_ABORT
181 /* Override previous definitions (linux.h). */
184 MAYBE_AS_NO_MUL_BUG_ABORT \
188 /* For the cris-*-elf subtarget. */
189 #define CRIS_ASM_SUBTARGET_SPEC "--em=criself"
191 /* FIXME: We should propagate the -melf option to make the criself
192 "emulation" unless a linker script is provided (-T*), but I don't know
193 how to do that if either of -Ttext, -Tdata or -Tbss is given but no
194 linker script, as is usually the case. Leave it to the user for the
197 Note that -melf overrides -maout except that a.out-compiled libraries
198 are linked in (multilibbing). The somewhat cryptic -rpath-link pair is
199 to avoid *only* picking up the linux multilib subdir from the "-B./"
200 option during build, while still giving it preference. We'd need some
201 %s-variant that checked for existence of some specific file. */
202 /* Override previous definitions (svr4.h). */
208 /* For the cris-*-elf subtarget. */
209 #define CRIS_LINK_SUBTARGET_SPEC \
211 %{sim2:%{!T*:-Tdata 0x4000000 -Tbss 0x8000000}}\
212 %{!r:%{O2|O3: --gc-sections}}"
214 /* Which library to get. The only difference from the default is to get
215 libsc.a if -sim is given to the driver. Repeat -lc -lsysX
216 {X=sim,linux}, because libsysX needs (at least) errno from libc, and
217 then we want to resolve new unknowns in libc against libsysX, not
219 /* Override previous definitions (linux.h). */
222 "%{sim*:-lc -lsyssim -lc -lsyssim}\
224 %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} -lbsp}\
227 /* Linker startfile options; crt0 flavors.
229 At the moment there are no gcrt0.o or mcrt0.o, but keep them here and
230 link them to crt0.o to be prepared. Use scrt0.c if running the
231 simulator, linear style, or s2crt0.c if fixed style. */
232 /* We need to remove any previous definition (elfos.h). */
233 #undef STARTFILE_SPEC
234 #define STARTFILE_SPEC \
236 %{!sim2:%{sim:scrt0.o%s}\
237 %{!sim:%{pg:gcrt0.o%s}\
238 %{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
242 #define ENDFILE_SPEC "crtend.o%s"
244 #define EXTRA_SPECS \
245 {"cpp_subtarget", CRIS_CPP_SUBTARGET_SPEC}, \
246 {"cc1_subtarget", CRIS_CC1_SUBTARGET_SPEC}, \
247 {"asm_subtarget", CRIS_ASM_SUBTARGET_SPEC}, \
248 {"link_subtarget", CRIS_LINK_SUBTARGET_SPEC}, \
249 CRIS_SUBTARGET_EXTRA_SPECS
251 #define CRIS_SUBTARGET_EXTRA_SPECS
254 /* Node: Run-time Target */
256 #define TARGET_CPU_CPP_BUILTINS() \
259 builtin_define_std ("cris"); \
260 builtin_define_std ("CRIS"); \
261 builtin_define_std ("GNU_CRIS"); \
262 builtin_define ("__CRIS_ABI_version=2"); \
263 builtin_assert ("cpu=cris"); \
264 builtin_assert ("machine=cris"); \
268 /* This needs to be at least 32 bits. */
269 extern int target_flags;
271 /* Currently this just affects alignment. FIXME: Redundant with
272 TARGET_ALIGN_BY_32, or put machine stuff here? */
273 #define TARGET_MASK_SVINTO 1
274 #define TARGET_SVINTO (target_flags & TARGET_MASK_SVINTO)
276 /* If to use condition-codes generated by insns other than the
277 immediately preceding compare/test insn.
278 Used to check for errors in notice_update_cc. */
279 #define TARGET_MASK_CCINIT 2
280 #define TARGET_CCINIT (target_flags & TARGET_MASK_CCINIT)
283 #define TARGET_MASK_PDEBUG 4
284 #define TARGET_PDEBUG (target_flags & TARGET_MASK_PDEBUG)
286 /* If to use side-effect patterns. Used to debug the [rx=ry+i] type
288 #define TARGET_MASK_SIDE_EFFECT_PREFIXES 8
289 #define TARGET_SIDE_EFFECT_PREFIXES \
290 (target_flags & TARGET_MASK_SIDE_EFFECT_PREFIXES)
292 /* If to expand mul into mstep. Only used when making libc.a. */
293 #define TARGET_MASK_EXPAND_MUL 16
294 #define TARGET_EXPAND_MUL (target_flags & TARGET_MASK_EXPAND_MUL)
296 /* If to *keep* (not force) alignment of stack at 16 bits. */
297 #define TARGET_MASK_STACK_ALIGN 32
298 #define TARGET_STACK_ALIGN (target_flags & TARGET_MASK_STACK_ALIGN)
300 /* If to do alignment on individual non-modifiable objects. */
301 #define TARGET_MASK_CONST_ALIGN 64
302 #define TARGET_CONST_ALIGN (target_flags & TARGET_MASK_CONST_ALIGN)
304 /* If to do alignment on individual modifiable objects. */
305 #define TARGET_MASK_DATA_ALIGN 128
306 #define TARGET_DATA_ALIGN (target_flags & TARGET_MASK_DATA_ALIGN)
308 /* If not to omit function prologue and epilogue. */
309 #define TARGET_MASK_PROLOGUE_EPILOGUE 256
310 #define TARGET_PROLOGUE_EPILOGUE (target_flags & TARGET_MASK_PROLOGUE_EPILOGUE)
312 /* Instructions additions from Etrax 4 and up.
313 (Just "lz", which we don't really generate from GCC -- yet). */
314 #define TARGET_MASK_ETRAX4_ADD 512
315 #define TARGET_ETRAX4_ADD (target_flags & TARGET_MASK_ETRAX4_ADD)
317 /* Say that all alignment specifications say to prefer 32 rather
319 #define TARGET_MASK_ALIGN_BY_32 1024
320 #define TARGET_ALIGN_BY_32 (target_flags & TARGET_MASK_ALIGN_BY_32)
322 /* This condition is of limited use, as gcc is riddled with #ifdef:s
323 controlling this, rather than if (...):s. */
324 #define TARGET_MASK_ELF 2048
325 #define TARGET_ELF (target_flags & TARGET_MASK_ELF)
327 /* Currently just used to error-check other options. Note that this is
328 *not* set for -melinux. */
329 #define TARGET_MASK_LINUX 4096
330 #define TARGET_LINUX (target_flags & TARGET_MASK_LINUX)
332 /* There's a small setup cost with using GOTPLT references, but should
333 in total be a win both in code-size and execution-time. */
334 #define TARGET_MASK_AVOID_GOTPLT 8192
335 #define TARGET_AVOID_GOTPLT (target_flags & TARGET_MASK_AVOID_GOTPLT)
337 /* Whether or not to work around multiplication instruction hardware bug
338 when generating code for models where it may be present. From the
339 trouble report for Etrax 100 LX: "A multiply operation may cause
340 incorrect cache behaviour under some specific circumstances. The
341 problem can occur if the instruction following the multiply instruction
342 causes a cache miss, and multiply operand 1 (source operand) bits
343 [31:27] matches the logical mapping of the mode register address
344 (0xb0....), and bits [9:2] of operand 1 matches the TLB register
345 address (0x258-0x25f). There is such a mapping in kernel mode or when
346 the MMU is off. Normally there is no such mapping in user mode, and
347 the problem will therefore probably not occur in Linux user mode
350 We have no sure-fire way to know from within GCC that we're compiling a
351 user program. For example, -fpic/PIC is used in libgcc which is linked
352 into the kernel. However, the workaround option -mno-mul-bug can be
353 safely used per-package when compiling programs. The same goes for
354 general user-only libraries such as glibc, since there's no user-space
355 driver-like program that gets a mapping of I/O registers (all on the
356 same page, including the TLB registers). */
357 #define TARGET_MASK_MUL_BUG 16384
358 #define TARGET_MUL_BUG (target_flags & TARGET_MASK_MUL_BUG)
360 #define TARGET_SWITCHES \
362 {"mul-bug-workaround", TARGET_MASK_MUL_BUG, \
363 N_("Work around bug in multiplication instruction")}, \
364 {"no-mul-bug-workaround", -TARGET_MASK_MUL_BUG, ""}, \
365 /* No "no-etrax" as it does not really imply any model. \
366 On the other hand, "etrax" implies the common (and large) \
367 subset matching all models. */ \
368 {"etrax4", TARGET_MASK_ETRAX4_ADD, \
369 N_("Compile for ETRAX 4 (CRIS v3)")}, \
370 {"no-etrax4", -TARGET_MASK_ETRAX4_ADD, ""}, \
371 {"etrax100", (TARGET_MASK_SVINTO \
372 + TARGET_MASK_ETRAX4_ADD \
373 + TARGET_MASK_ALIGN_BY_32), \
374 N_("Compile for ETRAX 100 (CRIS v8)")}, \
375 {"no-etrax100", -(TARGET_MASK_SVINTO \
376 + TARGET_MASK_ETRAX4_ADD), ""}, \
377 {"pdebug", TARGET_MASK_PDEBUG, \
378 N_("Emit verbose debug information in assembly code")}, \
379 {"no-pdebug", -TARGET_MASK_PDEBUG, ""}, \
380 {"cc-init", TARGET_MASK_CCINIT, \
381 N_("Do not use condition codes from normal instructions")}, \
382 {"no-cc-init", -TARGET_MASK_CCINIT, ""}, \
383 {"side-effects", TARGET_MASK_SIDE_EFFECT_PREFIXES, ""}, \
384 {"no-side-effects", -TARGET_MASK_SIDE_EFFECT_PREFIXES, \
385 N_("Do not emit addressing modes with side-effect assignment")}, \
386 {"stack-align", TARGET_MASK_STACK_ALIGN, ""}, \
387 {"no-stack-align", -TARGET_MASK_STACK_ALIGN, \
388 N_("Do not tune stack alignment")}, \
389 {"data-align", TARGET_MASK_DATA_ALIGN, ""}, \
390 {"no-data-align", -TARGET_MASK_DATA_ALIGN, \
391 N_("Do not tune writable data alignment")}, \
392 {"const-align", TARGET_MASK_CONST_ALIGN, ""}, \
393 {"no-const-align", -TARGET_MASK_CONST_ALIGN, \
394 N_("Do not tune code and read-only data alignment")}, \
395 {"32-bit", (TARGET_MASK_STACK_ALIGN \
396 + TARGET_MASK_CONST_ALIGN \
397 + TARGET_MASK_DATA_ALIGN \
398 + TARGET_MASK_ALIGN_BY_32), ""}, \
399 {"32bit", (TARGET_MASK_STACK_ALIGN \
400 + TARGET_MASK_CONST_ALIGN \
401 + TARGET_MASK_DATA_ALIGN \
402 + TARGET_MASK_ALIGN_BY_32), \
403 N_("Align code and data to 32 bits")}, \
404 {"16-bit", (TARGET_MASK_STACK_ALIGN \
405 + TARGET_MASK_CONST_ALIGN \
406 + TARGET_MASK_DATA_ALIGN), ""}, \
407 {"16bit", (TARGET_MASK_STACK_ALIGN \
408 + TARGET_MASK_CONST_ALIGN \
409 + TARGET_MASK_DATA_ALIGN), ""}, \
410 {"8-bit", -(TARGET_MASK_STACK_ALIGN \
411 + TARGET_MASK_CONST_ALIGN \
412 + TARGET_MASK_DATA_ALIGN), ""}, \
413 {"8bit", -(TARGET_MASK_STACK_ALIGN \
414 + TARGET_MASK_CONST_ALIGN \
415 + TARGET_MASK_DATA_ALIGN), \
416 N_("Don't align items in code or data")}, \
417 {"prologue-epilogue", TARGET_MASK_PROLOGUE_EPILOGUE, ""}, \
418 {"no-prologue-epilogue", -TARGET_MASK_PROLOGUE_EPILOGUE, \
419 N_("Do not emit function prologue or epilogue")}, \
420 /* We have to handle this m-option here since we can't wash it off in \
421 both CC1_SPEC and CC1PLUS_SPEC. */ \
422 {"best-lib-options", 0, \
423 N_("Use the most feature-enabling options allowed by other options")}, \
425 /* We must call it "override-" since calling it "no-" will cause \
426 gcc.c to forget it, if there's a "later" -mbest-lib-options. \
427 Kludgy, but needed for some multilibbed files. */ \
428 {"override-best-lib-options", 0, \
429 N_("Override -mbest-lib-options")}, \
430 CRIS_SUBTARGET_SWITCHES \
431 {"", TARGET_DEFAULT | CRIS_SUBTARGET_DEFAULT, ""}} \
433 /* For the cris-*-elf subtarget. */
434 #define CRIS_SUBTARGET_SWITCHES \
437 /* Default target_flags if no switches specified. */
438 #ifndef TARGET_DEFAULT
439 # define TARGET_DEFAULT \
440 (TARGET_MASK_SIDE_EFFECT_PREFIXES + TARGET_MASK_STACK_ALIGN \
441 + TARGET_MASK_CONST_ALIGN + TARGET_MASK_DATA_ALIGN \
442 + TARGET_MASK_PROLOGUE_EPILOGUE + TARGET_MASK_MUL_BUG)
445 /* For the cris-*-elf subtarget. */
446 #define CRIS_SUBTARGET_DEFAULT TARGET_MASK_ELF
448 #define CRIS_CPU_BASE 0
449 #define CRIS_CPU_ETRAX4 3 /* Just lz added. */
450 #define CRIS_CPU_SVINTO 8 /* Added swap, jsrc & Co., 32-bit accesses. */
451 #define CRIS_CPU_NG 10 /* Added mul[su]. */
453 /* Local, providing a default for cris_cpu_version. */
454 #define CRIS_DEFAULT_CPU_VERSION CRIS_CPU_BASE
456 #define TARGET_HAS_MUL_INSNS (cris_cpu_version >= CRIS_CPU_NG)
458 #define TARGET_OPTIONS \
459 {{"cpu=", &cris_cpu_str, "", 0}, \
460 {"arch=", &cris_cpu_str, \
461 N_("Generate code for the specified chip or CPU version"), 0}, \
462 {"tune=", &cris_tune_str, \
463 N_("Tune alignment for the specified chip or CPU version"), 0}, \
464 {"max-stackframe=", &cris_max_stackframe_str, \
465 N_("Warn when a stackframe is larger than the specified size"), 0}, \
466 CRIS_SUBTARGET_LONG_OPTIONS \
467 {"ax-stackframe=", &cris_max_stackframe_str, "", 0} }
469 #define CRIS_SUBTARGET_LONG_OPTIONS
471 /* Print subsidiary information on the compiler version in use.
472 Do not use VD.D syntax (D=digit), since this will cause confusion
473 with the base gcc version among users, when we ask which version of
474 gcc-cris they are using. Please use some flavor of "R<number>" for
475 the version (no need for major.minor versions, I believe). */
476 #define TARGET_VERSION \
477 fprintf (stderr, " [Axis CRIS%s]", CRIS_SUBTARGET_VERSION)
479 /* For the cris-*-elf subtarget. */
480 #define CRIS_SUBTARGET_VERSION " - generic ELF"
482 #define OVERRIDE_OPTIONS cris_override_options ()
484 /* The following gives optimal code for gcc-2.7.2, but *may* be subject
485 to change. Omitting flag_force_addr gives .1-.7% faster code for gcc
486 *only*, but 1.3% larger code. On ipps it gives 5.3-10.6% slower
487 code(!) and 0.3% larger code. For products, images gets .1-1.8%
488 larger. Do not set strict aliasing from optimization options. */
489 #define OPTIMIZATION_OPTIONS(OPTIMIZE, SIZE) \
492 if ((OPTIMIZE) >= 2 || (SIZE)) \
494 flag_force_addr = 1; \
495 flag_omit_frame_pointer = 1; \
501 /* Node: Storage Layout */
503 #define BITS_BIG_ENDIAN 0
505 #define BYTES_BIG_ENDIAN 0
507 /* WORDS_BIG_ENDIAN is not defined in the hardware, but for consistency,
508 we use little-endianness, and we may also be able to use
509 post-increment on DImode indirect. */
510 #define WORDS_BIG_ENDIAN 0
512 #define UNITS_PER_WORD 4
514 /* A combination of defining PROMOTE_FUNCTION_MODE,
515 TARGET_PROMOTE_FUNCTION_ARGS that always returns true
516 and *not* defining TARGET_PROMOTE_PROTOTYPES or PROMOTE_MODE gives the
517 best code size and speed for gcc, ipps and products in gcc-2.7.2. */
518 #define CRIS_PROMOTED_MODE(MODE, UNSIGNEDP, TYPE) \
519 (GET_MODE_CLASS (MODE) == MODE_INT && GET_MODE_SIZE (MODE) < 4) \
522 #define PROMOTE_FUNCTION_MODE(MODE, UNSIGNEDP, TYPE) \
523 (MODE) = CRIS_PROMOTED_MODE (MODE, UNSIGNEDP, TYPE)
525 /* Defining PROMOTE_FUNCTION_RETURN in gcc-2.7.2 uncovers bug 981110 (even
526 if defining FUNCTION_VALUE with MODE as PROMOTED_MODE ;-)
528 FIXME: Report this when cris.h is part of GCC, so others can easily
529 see the problem. Maybe check other systems that define
530 TARGET_PROMOTE_FUNCTION_RETURN that always returns true. */
532 /* We will be using prototype promotion, so they will be 32 bit. */
533 #define PARM_BOUNDARY 32
535 /* Stack boundary is guided by -mstack-align, -mno-stack-align,
537 Old comment: (2.1: still valid in 2.7.2?)
538 Note that to make this macro affect the alignment of stack
539 locals, a fix was required, and special precautions when handling
540 the stack pointer in various other macros (TARGET_ASM_FUNCTION_PROLOGUE
541 et al) were required. See file "function.c". If you would just define
542 this macro, it would only affect the builtin alloca and variable
543 local data (non-ANSI, non-K&R, Gnu C extension). */
544 #define STACK_BOUNDARY \
545 (TARGET_STACK_ALIGN ? (TARGET_ALIGN_BY_32 ? 32 : 16) : 8)
547 #define FUNCTION_BOUNDARY 16
549 /* Do not change BIGGEST_ALIGNMENT (when optimizing), as it will affect
550 strange places, at least in 2.1. */
551 #define BIGGEST_ALIGNMENT 8
553 /* If -m16bit, -m16-bit, -malign or -mdata-align,
554 align everything to 16 bit. */
555 #define DATA_ALIGNMENT(TYPE, BASIC_ALIGN) \
557 ? (TARGET_ALIGN_BY_32 \
558 ? (BASIC_ALIGN < 32 ? 32 : BASIC_ALIGN) \
559 : (BASIC_ALIGN < 16 ? 16 : BASIC_ALIGN)) : BASIC_ALIGN)
561 /* Note that CONSTANT_ALIGNMENT has the effect of making gcc believe that
562 ALL references to constant stuff (in code segment, like strings) has
563 this alignment. That is a rather rushed assumption. Luckily we do not
564 care about the "alignment" operand to builtin memcpy (only place where
565 it counts), so it doesn't affect any bad spots. */
566 #define CONSTANT_ALIGNMENT(CONSTANT, BASIC_ALIGN) \
567 (TARGET_CONST_ALIGN \
568 ? (TARGET_ALIGN_BY_32 \
569 ? (BASIC_ALIGN < 32 ? 32 : BASIC_ALIGN) \
570 : (BASIC_ALIGN < 16 ? 16 : BASIC_ALIGN)) : BASIC_ALIGN)
572 /* FIXME: Define LOCAL_ALIGNMENT for word and dword or arrays and
573 structures (if -mstack-align=), and check that it is good. */
575 #define EMPTY_FIELD_BOUNDARY 8
577 #define STRUCTURE_SIZE_BOUNDARY 8
579 #define STRICT_ALIGNMENT 0
581 /* Remove any previous definition (elfos.h).
582 ??? If it wasn't for all the other stuff that affects layout of
583 structures and bit-fields, this could presumably cause incompatibility
584 with other GNU/Linux ports (i.e. elfos.h users). */
585 #undef PCC_BITFIELD_TYPE_MATTERS
587 /* This is only used for non-scalars. Strange stuff happens to structs
588 (FIXME: What?) if we use anything larger than largest actually used
589 datum size, so lets make it 32. The type "long long" will still work
590 as usual. We can still have DImode insns, but they will only be used
591 for scalar data (i.e. long long). */
592 #define MAX_FIXED_MODE_SIZE 32
595 /* Node: Type Layout */
597 /* Note that DOUBLE_TYPE_SIZE is not defined anymore, since the default
598 value gives a 64-bit double, which is what we now use. */
600 /* For compatibility and historical reasons, a char should be signed. */
601 #define DEFAULT_SIGNED_CHAR 1
603 /* Note that WCHAR_TYPE_SIZE is used in cexp.y,
604 where TARGET_SHORT is not available. */
606 #define WCHAR_TYPE "long int"
608 #undef WCHAR_TYPE_SIZE
609 #define WCHAR_TYPE_SIZE 32
612 /* Node: Register Basics */
614 /* We count all 16 non-special registers, SRP and a faked argument
616 #define FIRST_PSEUDO_REGISTER (16 + 1 + 1)
618 /* For CRIS, these are r15 (pc) and r14 (sp). Register r8 is used as a
619 frame-pointer, but is not fixed. SRP is not included in general
620 registers and will not be used automatically. All other special
621 registers are fixed at the moment. The faked argument pointer register
623 #define FIXED_REGISTERS \
624 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1}
626 /* Register r9 is used for structure-address, r10-r13 for parameters,
627 r10- for return values. */
628 #define CALL_USED_REGISTERS \
629 {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1}
631 #define CONDITIONAL_REGISTER_USAGE cris_conditional_register_usage ()
634 /* Node: Allocation Order */
636 /* We need this on CRIS, because call-used regs should be used first,
637 (so we don't need to push). Else start using registers from r0 and up.
638 This preference is mainly because if we put call-used-regs from r0
639 and up, then we can't use movem to push the rest, (which have to be
640 saved if we use them, and movem has to start with r0).
641 Change here if you change which registers to use as call registers.
643 The actual need to explicitly prefer call-used registers improved the
644 situation a lot for 2.1, but might not actually be needed anymore.
645 Still, this order reflects what GCC should find out by itself, so it
646 probably does not hurt.
648 Order of preference: Call-used-regs first, then r0 and up, last fp &
650 Call-used regs in opposite order, so they will cause less conflict if
651 a function has few args (<= 3) and it wants a scratch reg.
652 Use struct-return address first, since very few functions use
653 structure return values so it is likely to be available. */
654 #define REG_ALLOC_ORDER \
655 {9, 13, 12, 11, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 14, 15, 16, 17}
658 /* Node: Values in Registers */
660 /* The VOIDmode test is so we can omit mode on anonymous insns. FIXME:
661 Still needed in 2.9x, at least for Axis-20000319. */
662 #define HARD_REGNO_NREGS(REGNO, MODE) \
664 ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
666 /* CRIS permits all registers to hold all modes. */
667 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
669 #define MODES_TIEABLE_P(MODE1, MODE2) 1
672 /* Node: Leaf Functions */
673 /* (no definitions) */
675 /* Node: Stack Registers */
676 /* (no definitions) */
679 /* Node: Register Classes */
681 /* CRIS has only one kind of registers, so NO_REGS and ALL_REGS
682 are the only classes. FIXME: It actually makes sense to have another
683 class for special registers, and yet another class for the
684 multiply-overflow register in v10; then a class for the return
685 register also makes sense. */
686 enum reg_class {NO_REGS, ALL_REGS, LIM_REG_CLASSES};
688 #define N_REG_CLASSES (int) LIM_REG_CLASSES
690 #define REG_CLASS_NAMES {"NO_REGS", "ALL_REGS"}
692 #define GENERAL_REGS ALL_REGS
694 /* Count in the faked argument register in GENERAL_REGS. Keep out SRP. */
695 #define REG_CLASS_CONTENTS {{0}, {0x2ffff}}
697 #define REGNO_REG_CLASS(REGNO) GENERAL_REGS
699 #define BASE_REG_CLASS GENERAL_REGS
701 #define INDEX_REG_CLASS GENERAL_REGS
703 /* Get reg_class from a letter such as appears in the machine
704 description. No letters are used, since 'r' is used for any
706 #define REG_CLASS_FROM_LETTER(C) NO_REGS
708 /* Since it uses reg_renumber, it is safe only once reg_renumber
709 has been allocated, which happens in local-alloc.c. */
710 #define REGNO_OK_FOR_BASE_P(REGNO) \
711 ((REGNO) <= CRIS_LAST_GENERAL_REGISTER \
712 || (REGNO) == ARG_POINTER_REGNUM \
713 || (unsigned) reg_renumber[REGNO] <= CRIS_LAST_GENERAL_REGISTER \
714 || (unsigned) reg_renumber[REGNO] == ARG_POINTER_REGNUM)
716 /* See REGNO_OK_FOR_BASE_P. */
717 #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO)
719 /* It seems like gcc (2.7.2 and 2.9x of 2000-03-22) may send "NO_REGS" as
720 the class for a constant (testcase: __Mul in arit.c). To avoid forcing
721 out a constant into the constant pool, we will trap this case and
722 return something a bit more sane. FIXME: Check if this is a bug. */
723 #define PREFERRED_RELOAD_CLASS(X, CLASS) \
724 ((CLASS) == NO_REGS ? GENERAL_REGS : (CLASS))
726 /* For CRIS, this is always the size of MODE in words,
727 since all registers are the same size. To use omitted modes in
728 patterns with reload constraints, you must say the widest size
729 which is allowed for VOIDmode.
730 FIXME: Does that still apply for gcc-2.9x? Keep poisoned until such
731 patterns are added back. News: 2001-03-16: Happens as early as the
733 #define CLASS_MAX_NREGS(CLASS, MODE) \
734 ((MODE) == VOIDmode \
735 ? 1 /* + cris_fatal ("CLASS_MAX_NREGS with VOIDmode") */ \
736 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
738 /* We are now out of letters; we could use ten more. This forces us to
739 use C-code in the 'md' file. FIXME: Use some EXTRA_CONSTRAINTS. */
740 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
742 /* MOVEQ, CMPQ, ANDQ, ORQ. */ \
743 (C) == 'I' ? (VALUE) >= -32 && (VALUE) <= 31 : \
745 (C) == 'J' ? (VALUE) >= 0 && (VALUE) <= 63 : \
746 /* ASRQ, BTSTQ, LSRQ, LSLQ. */ \
747 (C) == 'K' ? (VALUE) >= 0 && (VALUE) <= 31 : \
748 /* A 16-bit signed number. */ \
749 (C) == 'L' ? (VALUE) >= -32768 && (VALUE) <= 32767 : \
750 /* The constant 0 for CLEAR. */ \
751 (C) == 'M' ? (VALUE) == 0 : \
752 /* A negative ADDQ or SUBQ. */ \
753 (C) == 'N' ? (VALUE) >= -63 && (VALUE) < 0 : \
754 /* Quickened ints, QI and HI. */ \
755 (C) == 'O' ? (VALUE) >= 0 && (VALUE) <= 65535 \
756 && ((VALUE) >= (65535-31) \
757 || ((VALUE) >= (255-31) \
758 && (VALUE) <= 255 )) : \
759 /* A 16-bit number signed *or* unsigned. */ \
760 (C) == 'P' ? (VALUE) >= -32768 && (VALUE) <= 65535 : \
763 /* It is really simple to make up a 0.0; it is the same as int-0 in
765 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
766 ((C) == 'G' && ((VALUE) == CONST0_RTX (DFmode) \
767 || (VALUE) == CONST0_RTX (SFmode)))
769 /* We need this on cris to distinguish delay-slottable addressing modes. */
770 #define EXTRA_CONSTRAINT(X, C) \
772 /* Slottable address mode? */ \
773 (C) == 'Q' ? EXTRA_CONSTRAINT_Q (X) : \
774 /* Operand to BDAP or BIAP? */ \
775 (C) == 'R' ? EXTRA_CONSTRAINT_R (X) : \
776 /* A local PIC symbol? */ \
777 (C) == 'S' ? EXTRA_CONSTRAINT_S (X) : \
778 /* A three-address addressing-mode? */ \
779 (C) == 'T' ? EXTRA_CONSTRAINT_T (X) : \
780 /* A global PIC symbol? */ \
781 (C) == 'U' ? EXTRA_CONSTRAINT_U (X) : \
784 #define EXTRA_CONSTRAINT_Q(X) \
786 /* Slottable addressing modes: \
787 A register? FIXME: Unnecessary. */ \
788 (BASE_P (X) && REGNO (X) != CRIS_PC_REGNUM) \
789 /* Indirect register: [reg]? */ \
790 || (GET_CODE (X) == MEM && BASE_P (XEXP (X, 0)) \
791 && REGNO (XEXP (X, 0)) != CRIS_PC_REGNUM) \
794 #define EXTRA_CONSTRAINT_R(X) \
796 /* An operand to BDAP or BIAP: \
799 /* A [reg] or (int) [reg], maybe with post-increment. */ \
800 || BDAP_INDEX_P (X) \
801 || CONSTANT_INDEX_P (X) \
804 #define EXTRA_CONSTRAINT_T(X) \
806 /* Memory three-address operand. All are indirect-memory: */ \
807 GET_CODE (X) == MEM \
808 && ((GET_CODE (XEXP (X, 0)) == MEM \
809 /* Double indirect: [[reg]] or [[reg+]]? */ \
810 && (BASE_OR_AUTOINCR_P (XEXP (XEXP (X, 0), 0)))) \
811 /* Just an explicit indirect reference: [const]? */ \
812 || CONSTANT_P (XEXP (X, 0)) \
813 /* Something that is indexed; [...+...]? */ \
814 || (GET_CODE (XEXP (X, 0)) == PLUS \
815 /* A BDAP constant: [reg+(8|16|32)bit offset]? */ \
816 && ((BASE_P (XEXP (XEXP (X, 0), 0)) \
817 && CONSTANT_INDEX_P (XEXP (XEXP (X, 0), 1))) \
818 /* Swap arguments to the above. FIXME: gcc-2.9x? */ \
819 || (BASE_P (XEXP (XEXP (X, 0), 1)) \
820 && CONSTANT_INDEX_P (XEXP (XEXP (X, 0), 0))) \
821 /* A BDAP register: [reg+[reg(+)].S]? */ \
822 || (BASE_P (XEXP (XEXP (X, 0), 0)) \
823 && BDAP_INDEX_P(XEXP(XEXP(X, 0), 1))) \
824 /* Same, but with swapped arguments. */ \
825 || (BASE_P (XEXP (XEXP (X, 0), 1)) \
826 && BDAP_INDEX_P (XEXP (XEXP (X, 0), 0))) \
827 /* A BIAP: [reg+reg.S]. */ \
828 || (BASE_P (XEXP (XEXP (X, 0), 0)) \
829 && BIAP_INDEX_P (XEXP (XEXP (X, 0), 1))) \
830 /* Same, but with swapped arguments. */ \
831 || (BASE_P (XEXP (XEXP (X, 0), 1)) \
832 && BIAP_INDEX_P (XEXP (XEXP (X, 0), 0)))))) \
835 #define EXTRA_CONSTRAINT_S(X) \
836 (flag_pic && CONSTANT_P (X) && cris_gotless_symbol (X))
838 #define EXTRA_CONSTRAINT_U(X) \
839 (flag_pic && CONSTANT_P (X) && cris_got_symbol (X))
842 /* Node: Frame Layout */
844 #define STACK_GROWS_DOWNWARD
845 #define FRAME_GROWS_DOWNWARD
847 /* It seems to be indicated in the code (at least 2.1) that this is
848 better a constant, and best 0. */
849 #define STARTING_FRAME_OFFSET 0
851 #define FIRST_PARM_OFFSET(FNDECL) 0
853 #define RETURN_ADDR_RTX(COUNT, FRAMEADDR) \
854 cris_return_addr_rtx (COUNT, FRAMEADDR)
856 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, CRIS_SRP_REGNUM)
858 /* FIXME: Any __builtin_eh_return callers must not return anything and
859 there must not be collisions with incoming parameters. Luckily the
860 number of __builtin_eh_return callers is limited. For now return
861 parameter registers in reverse order and hope for the best. */
862 #define EH_RETURN_DATA_REGNO(N) \
863 (IN_RANGE ((N), 0, 3) ? (CRIS_FIRST_ARG_REG + 3 - (N)) : INVALID_REGNUM)
865 /* Store the stack adjustment in the structure-return-address register. */
866 #define CRIS_STACKADJ_REG CRIS_STRUCT_VALUE_REGNUM
867 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, CRIS_STACKADJ_REG)
869 #define EH_RETURN_HANDLER_RTX \
870 cris_return_addr_rtx (0, NULL)
872 #define INIT_EXPANDERS cris_init_expanders ()
874 /* FIXME: Move this to right node (it's not documented properly yet). */
875 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (CRIS_SRP_REGNUM)
877 /* FIXME: Move this to right node (it's not documented properly yet).
878 FIXME: Check what alignment we can assume regarding
879 TARGET_STACK_ALIGN and TARGET_ALIGN_BY_32. */
880 #define DWARF_CIE_DATA_ALIGNMENT -1
882 /* If we would ever need an exact mapping between canonical register
883 number and dwarf frame register, we would either need to include all
884 registers in the gcc description (with some marked fixed of course), or
885 an inverse mapping from dwarf register to gcc register. There is one
886 need in dwarf2out.c:expand_builtin_init_dwarf_reg_sizes. Right now, I
887 don't see that we need exact correspondence between DWARF *frame*
888 registers and DBX_REGISTER_NUMBER, so map them onto GCC registers. */
889 #define DWARF_FRAME_REGNUM(REG) (REG)
891 /* Node: Stack Checking */
892 /* (no definitions) FIXME: Check. */
894 /* Node: Frame Registers */
896 #define STACK_POINTER_REGNUM 14
898 /* Register used for frame pointer. This is also the last of the saved
899 registers, when a frame pointer is not used. */
900 #define FRAME_POINTER_REGNUM 8
902 /* Faked register, is always eliminated. We need it to eliminate
903 allocating stack slots for the return address and the frame pointer. */
904 #define ARG_POINTER_REGNUM 17
906 #define STATIC_CHAIN_REGNUM 7
909 /* Node: Elimination */
911 /* Really only needed if the stack frame has variable length (alloca
912 or variable sized local arguments (GNU C extension). */
913 #define FRAME_POINTER_REQUIRED 0
915 #define ELIMINABLE_REGS \
916 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
917 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
918 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
920 /* We need not worry about when the frame-pointer is required for other
922 #define CAN_ELIMINATE(FROM, TO) 1
924 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
925 (OFFSET) = cris_initial_elimination_offset (FROM, TO)
928 /* Node: Stack Arguments */
930 /* Since many parameters take up one register each in any case,
931 defining TARGET_PROMOTE_PROTOTYPES that always returns true would
932 seem like a good idea, but measurements indicate that a combination
933 using PROMOTE_MODE is better. */
935 #define ACCUMULATE_OUTGOING_ARGS 1
937 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACKSIZE) 0
940 /* Node: Register Arguments */
942 /* The void_type_node is sent as a "closing" call. We have to stop it
943 since it's invalid to FUNCTION_ARG_PASS_BY_REFERENCE (or was invalid at
945 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
946 ((CUM).regs < CRIS_MAX_ARGS_IN_REGS \
947 && (TYPE) != void_type_node \
948 && ! FUNCTION_ARG_PASS_BY_REFERENCE (CUM, MODE, TYPE, NAMED) \
949 ? gen_rtx_REG (MODE, (CRIS_FIRST_ARG_REG) + (CUM).regs) \
952 /* The differences between this and the previous, is that this one checks
953 that an argument is named, since incoming stdarg/varargs arguments are
954 pushed onto the stack, and we don't have to check against the "closing"
955 void_type_node TYPE parameter. */
956 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
957 (((NAMED) && (CUM).regs < CRIS_MAX_ARGS_IN_REGS \
958 && ! FUNCTION_ARG_PASS_BY_REFERENCE (CUM, MODE, TYPE, NAMED)) \
959 ? gen_rtx_REG (MODE, CRIS_FIRST_ARG_REG + (CUM).regs) \
962 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
963 (((CUM).regs == (CRIS_MAX_ARGS_IN_REGS - 1) \
964 && !targetm.calls.must_pass_in_stack (MODE, TYPE) \
965 && CRIS_FUNCTION_ARG_SIZE (MODE, TYPE) > 4 \
966 && CRIS_FUNCTION_ARG_SIZE (MODE, TYPE) <= 8) \
969 /* Structs may be passed by value, but they must not be more than 8
970 bytes long. If you tweak this, don't forget to adjust
971 cris_expand_builtin_va_arg. */
972 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
973 (targetm.calls.must_pass_in_stack (MODE, TYPE) \
974 || CRIS_FUNCTION_ARG_SIZE (MODE, TYPE) > 8) \
976 /* Contrary to what you'd believe, defining FUNCTION_ARG_CALLEE_COPIES
977 seems like a (small total) loss, at least for gcc-2.7.2 compiling and
978 running gcc-2.1 (small win in size, small loss running -- 100.1%),
979 and similarly for size for products (.1 .. .3% bloat, sometimes win).
980 Due to the empirical likeliness of making slower code, it is not
983 /* This no longer *needs* to be a structure; but keeping it as such should
984 not hurt (and hacking the ABI is simpler). */
985 #define CUMULATIVE_ARGS struct cum_args
986 struct cum_args {int regs;};
988 /* The regs member is an integer, the number of arguments got into
990 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
993 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
995 = (FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
996 ? (CRIS_MAX_ARGS_IN_REGS) + 1 \
998 + (3 + (CRIS_FUNCTION_ARG_SIZE (MODE, TYPE))) / 4)))
1000 #define FUNCTION_ARG_REGNO_P(REGNO) \
1001 ((REGNO) >= CRIS_FIRST_ARG_REG \
1002 && (REGNO) < CRIS_FIRST_ARG_REG + (CRIS_MAX_ARGS_IN_REGS))
1005 /* Node: Scalar Return */
1007 /* Let's assume all functions return in r[CRIS_FIRST_ARG_REG] for the
1009 #define FUNCTION_VALUE(VALTYPE, FUNC) \
1010 gen_rtx_REG (TYPE_MODE (VALTYPE), CRIS_FIRST_ARG_REG)
1012 #define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, CRIS_FIRST_ARG_REG)
1014 #define FUNCTION_VALUE_REGNO_P(N) ((N) == CRIS_FIRST_ARG_REG)
1017 /* Node: Aggregate Return */
1020 /* FIXME: Let's try this some time, so we return structures in registers.
1021 We would cast the result of int_size_in_bytes to unsigned, so we will
1022 get a huge number for "structures" of variable size (-1). */
1023 #define RETURN_IN_MEMORY(TYPE) \
1024 ((unsigned) int_size_in_bytes (TYPE) > CRIS_MAX_ARGS_IN_REGS * UNITS_PER_WORD)
1027 #define CRIS_STRUCT_VALUE_REGNUM ((CRIS_FIRST_ARG_REG) - 1)
1030 /* Node: Caller Saves */
1031 /* (no definitions) */
1033 /* Node: Function entry */
1035 /* See cris.c for TARGET_ASM_FUNCTION_PROLOGUE and
1036 TARGET_ASM_FUNCTION_EPILOGUE. */
1038 /* If the epilogue uses the "ret" insn, we need to fill the
1040 #define DELAY_SLOTS_FOR_EPILOGUE cris_delay_slots_for_epilogue ()
1042 #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN, N) \
1043 cris_eligible_for_epilogue_delay (INSN)
1045 /* Node: Profiling */
1047 #define FUNCTION_PROFILER(FILE, LABELNO) \
1048 error ("no FUNCTION_PROFILER for CRIS")
1050 /* FIXME: Some of the undefined macros might be mandatory. If so, fix
1054 /* Node: Trampolines */
1056 /* This looks too complicated, and it is. I assigned r7 to be the
1057 static chain register, but it is call-saved, so we have to save it,
1058 and come back to restore it after the call, so we have to save srp...
1059 Anyway, trampolines are rare enough that we can cope with this
1060 somewhat lack of elegance.
1061 (Do not be tempted to "straighten up" whitespace in the asms; the
1062 assembler #NO_APP state mandates strict spacing). */
1063 #define TRAMPOLINE_TEMPLATE(FILE) \
1066 fprintf (FILE, "\tmove.d $%s,[$pc+20]\n", \
1067 reg_names[STATIC_CHAIN_REGNUM]); \
1068 fprintf (FILE, "\tmove $srp,[$pc+22]\n"); \
1069 fprintf (FILE, "\tmove.d 0,$%s\n", \
1070 reg_names[STATIC_CHAIN_REGNUM]); \
1071 fprintf (FILE, "\tjsr 0\n"); \
1072 fprintf (FILE, "\tmove.d 0,$%s\n", \
1073 reg_names[STATIC_CHAIN_REGNUM]); \
1074 fprintf (FILE, "\tjump 0\n"); \
1078 #define TRAMPOLINE_SIZE 32
1080 /* CRIS wants instructions on word-boundary.
1081 Note that due to a bug (reported) in 2.7.2 and earlier, this is
1082 actually treated as alignment in _bytes_, not _bits_. (Obviously
1083 this is not fatal, only a slight waste of stack space). */
1084 #define TRAMPOLINE_ALIGNMENT 16
1086 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
1089 emit_move_insn (gen_rtx_MEM (SImode, \
1090 plus_constant (TRAMP, 10)), \
1092 emit_move_insn (gen_rtx_MEM (SImode, \
1093 plus_constant (TRAMP, 16)), \
1098 /* Note that there is no need to do anything with the cache for sake of
1102 /* Node: Library Calls */
1104 /* If you change this, you have to check whatever libraries and systems
1106 #define TARGET_EDOM 33
1109 /* Node: Addressing Modes */
1111 #define HAVE_POST_INCREMENT 1
1113 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
1115 #define MAX_REGS_PER_ADDRESS 2
1117 /* There are helper macros defined here which are used only in
1118 GO_IF_LEGITIMATE_ADDRESS.
1120 Note that you *have to* reject invalid addressing modes for mode
1121 MODE, even if it is legal for normal addressing modes. You cannot
1122 rely on the constraints to do this work. They can only be used to
1123 doublecheck your intentions. One example is that you HAVE TO reject
1124 (mem:DI (plus:SI (reg:SI x) (reg:SI y))) because for some reason
1125 this cannot be reloaded. (Which of course you can argue that gcc
1126 should have done.) FIXME: Strange. Check. */
1128 /* No symbol can be used as an index (or more correct, as a base) together
1129 with a register with PIC; the PIC register must be there. */
1130 #define CONSTANT_INDEX_P(X) \
1131 (CONSTANT_P (X) && !(flag_pic && cris_symbol (X)))
1133 /* True if X is a valid base register. */
1135 (REG_P (X) && REG_OK_FOR_BASE_P (X))
1137 /* True if X is a valid base register with or without autoincrement. */
1138 #define BASE_OR_AUTOINCR_P(X) \
1139 (BASE_P (X) || (GET_CODE (X) == POST_INC && BASE_P (XEXP (X, 0))))
1141 /* True if X is a valid (register) index for BDAP, i.e. [Rs].S or [Rs+].S. */
1142 #define BDAP_INDEX_P(X) \
1143 ((GET_CODE (X) == MEM && GET_MODE (X) == SImode \
1144 && BASE_OR_AUTOINCR_P (XEXP (X, 0))) \
1145 || (GET_CODE (X) == SIGN_EXTEND \
1146 && GET_CODE (XEXP (X, 0)) == MEM \
1147 && (GET_MODE (XEXP (X, 0)) == HImode \
1148 || GET_MODE (XEXP (X, 0)) == QImode) \
1149 && BASE_OR_AUTOINCR_P (XEXP (XEXP (X, 0), 0))))
1151 /* True if X is a valid (register) index for BIAP, i.e. Rd.m. */
1152 #define BIAP_INDEX_P(X) \
1153 ((BASE_P (X) && REG_OK_FOR_INDEX_P (X)) \
1154 || (GET_CODE (X) == MULT \
1155 && BASE_P (XEXP (X, 0)) \
1156 && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \
1157 && GET_CODE (XEXP (X, 1)) == CONST_INT \
1158 && (INTVAL (XEXP (X, 1)) == 2 \
1159 || INTVAL (XEXP (X, 1)) == 4)))
1161 /* True if X is an address that doesn't need a prefix i.e. [Rs] or [Rs+]. */
1162 #define SIMPLE_ADDRESS_P(X) \
1164 || (GET_CODE (X) == POST_INC \
1165 && BASE_P (XEXP (X, 0))))
1167 /* A PIC operand looks like a normal symbol here. At output we dress it
1168 in "[rPIC+symbol:GOT]" (global symbol) or "rPIC+symbol:GOTOFF" (local
1169 symbol) so we exclude all addressing modes where we can't replace a
1170 plain "symbol" with that. A global PIC symbol does not fit anywhere
1171 here (but is thankfully a general_operand in itself). A local PIC
1172 symbol is valid for the plain "symbol + offset" case. */
1173 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
1176 if (SIMPLE_ADDRESS_P (X)) \
1178 if (CONSTANT_P (X) \
1180 || cris_gotless_symbol (X) \
1181 || ! cris_symbol (X))) \
1184 if (GET_CODE (X) == PLUS) \
1189 if ((BASE_P (x1) && CONSTANT_INDEX_P (x2)) \
1190 || (BASE_P (x2) && CONSTANT_INDEX_P (x1)) \
1191 /* BDAP Rs[+], Rd. */ \
1192 || (GET_MODE_SIZE (MODE) <= UNITS_PER_WORD \
1193 && ((BASE_P (x1) && BDAP_INDEX_P (x2)) \
1194 || (BASE_P (x2) && BDAP_INDEX_P (x1)) \
1195 /* BIAP.m Rs, Rd */ \
1196 || (BASE_P (x1) && BIAP_INDEX_P (x2)) \
1197 || (BASE_P (x2) && BIAP_INDEX_P (x1))))) \
1200 else if (GET_CODE (X) == MEM) \
1202 /* DIP (Rs). Reject [[reg+]] and [[reg]] for \
1203 DImode (long long). */ \
1204 if (GET_MODE_SIZE (MODE) <= UNITS_PER_WORD \
1205 && (BASE_P (XEXP (X, 0)) \
1206 || BASE_OR_AUTOINCR_P (XEXP (X, 0)))) \
1211 #ifndef REG_OK_STRICT
1212 /* Nonzero if X is a hard reg that can be used as a base reg
1213 or if it is a pseudo reg. */
1214 # define REG_OK_FOR_BASE_P(X) \
1215 (REGNO (X) <= CRIS_LAST_GENERAL_REGISTER \
1216 || REGNO (X) == ARG_POINTER_REGNUM \
1217 || REGNO (X) >= FIRST_PSEUDO_REGISTER)
1219 /* Nonzero if X is a hard reg that can be used as a base reg. */
1220 # define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
1223 #ifndef REG_OK_STRICT
1224 /* Nonzero if X is a hard reg that can be used as an index
1225 or if it is a pseudo reg. */
1226 # define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
1228 /* Nonzero if X is a hard reg that can be used as an index. */
1229 # define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
1232 /* For now, don't do anything. GCC does a good job most often.
1234 Maybe we could do something about gcc:s misbehavior when it
1235 recalculates frame offsets for local variables, from fp+offs to
1236 sp+offs. The resulting address expression gets screwed up
1237 sometimes, but I'm not sure that it may be fixed here, since it is
1238 already split up in several instructions (Is this still true?).
1239 FIXME: Check and adjust for gcc-2.9x. */
1240 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) {}
1242 /* Kludge to solve Axis-990219: Work around imperfection in
1243 reload_load_address1:
1244 (plus (sign_extend (mem:qi (reg))) (reg))
1245 should be reloaded as (plus (reg) (reg)), not
1246 (plus (sign_extend (reg)) (reg)).
1247 There are no checks that reload_load_address_1 "reloads"
1248 addresses correctly, so invalidness is not caught or
1250 When the right thing happens in reload, the kludge can
1251 be removed; still not as of 2003-02-27. */
1253 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
1256 if (GET_CODE (X) == PLUS \
1257 && REG_P (XEXP (X, 1)) \
1258 && GET_CODE (XEXP (X, 0)) == SIGN_EXTEND \
1259 && GET_CODE (XEXP (XEXP (X, 0), 0)) == MEM \
1260 && (GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode \
1261 || GET_MODE (XEXP (XEXP (X, 0), 0)) == QImode) \
1262 && (REG_P (XEXP (XEXP (XEXP (X, 0), 0), 0)) \
1263 || (GET_CODE (XEXP (XEXP (XEXP (X, 0), 0), 0)) \
1265 && REG_P (XEXP (XEXP (XEXP (XEXP (X, 0), 0), 0), \
1268 int something_reloaded = 0; \
1270 if (REGNO (XEXP (X, 1)) >= FIRST_PSEUDO_REGISTER) \
1272 /* Second reg is pseudo, reload it. */ \
1273 push_reload (XEXP (X, 1), NULL_RTX, &XEXP (X, 1), \
1275 GENERAL_REGS, GET_MODE (X), VOIDmode, 0, 0, \
1277 something_reloaded = 1; \
1280 if (REG_P (XEXP (XEXP (XEXP (X, 0), 0), 0)) \
1281 && (REGNO (XEXP (XEXP (XEXP (X, 0), 0), 0)) \
1282 >= FIRST_PSEUDO_REGISTER)) \
1284 /* First one is a pseudo - reload that. */ \
1285 push_reload (XEXP (XEXP (XEXP (X, 0), 0), 0), NULL_RTX, \
1286 &XEXP (XEXP (XEXP (X, 0), 0), 0), NULL, \
1288 GET_MODE (X), VOIDmode, 0, 0, OPNUM, TYPE); \
1289 something_reloaded = 1; \
1292 if (! something_reloaded \
1293 || (GET_CODE (XEXP (XEXP (X, 0), 0)) == POST_INC \
1294 && (REGNO (XEXP (XEXP (XEXP (X, 0), 0), 0)) \
1295 >= FIRST_PSEUDO_REGISTER))) \
1296 /* Reload the sign_extend. Happens if neither reg is a \
1297 pseudo, or the first one was inside post_increment. */ \
1298 push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
1299 GENERAL_REGS, GET_MODE (X), VOIDmode, 0, 0, \
1306 /* In CRIS, only the postincrement address mode depends thus,
1307 since the increment depends on the size of the operand. */
1308 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
1311 if (GET_CODE (ADDR) == POST_INC) \
1316 #define LEGITIMATE_CONSTANT_P(X) 1
1319 /* Node: Condition Code */
1321 #define NOTICE_UPDATE_CC(EXP, INSN) cris_notice_update_cc (EXP, INSN)
1323 /* FIXME: Maybe define CANONICALIZE_COMPARISON later, when playing with
1324 optimizations. It is needed; currently we do this with instruction
1325 patterns and NOTICE_UPDATE_CC. */
1330 /* FIXME: Need to define REGISTER_MOVE_COST when more register classes are
1333 /* This isn't strictly correct for v0..3 in buswidth-8bit mode, but
1335 #define MEMORY_MOVE_COST(M, CLASS, IN) \
1336 (((M) == QImode) ? 4 : ((M) == HImode) ? 4 : 6)
1338 /* Regardless of the presence of delay slots, the default value of 1 for
1339 BRANCH_COST is the best in the range (1, 2, 3), tested with gcc-2.7.2
1340 with testcases ipps and gcc, giving smallest and fastest code. */
1342 #define SLOW_BYTE_ACCESS 0
1344 /* This is the threshold *below* which inline move sequences of
1345 word-length sizes will be emitted. The "9" will translate to
1346 (9 - 1) * 4 = 32 bytes maximum moved, but using 16 instructions
1347 (8 instruction sequences) or less. */
1348 #define MOVE_RATIO 9
1351 /* Node: Sections */
1353 #define TEXT_SECTION_ASM_OP "\t.text"
1355 #define DATA_SECTION_ASM_OP "\t.data"
1357 #define FORCE_EH_FRAME_INFO_IN_DATA_SECTION (! TARGET_ELF)
1359 /* The jump table is immediately connected to the preceding insn. */
1360 #define JUMP_TABLES_IN_TEXT_SECTION 1
1362 /* We pull a little trick to register the _fini function with atexit,
1363 after (presumably) registering the eh frame info, since we don't handle
1364 _fini (a.k.a. ___fini_start) in crt0 or have a crti for "pure" ELF. If
1365 you change this, don't forget that you can't have library function
1366 references (e.g. to atexit) in crtend.o, since those won't be resolved
1367 to libraries; those are linked in *before* crtend.o. */
1369 # define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \
1370 static void __attribute__((__used__)) \
1371 call_ ## FUNC (void) \
1375 if (__builtin_strcmp (#FUNC, "frame_dummy") == 0) \
1377 extern void __fini__start (void); \
1378 atexit (__fini__start); \
1380 asm (TEXT_SECTION_ASM_OP); \
1386 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? 0 : INVALID_REGNUM)
1388 #define LEGITIMATE_PIC_OPERAND_P(X) cris_legitimate_pic_operand (X)
1391 /* Node: File Framework */
1393 /* We don't want an .ident for gcc. To avoid that but still support
1394 #ident, we override ASM_OUTPUT_IDENT and, since the gcc .ident is its
1395 only use besides ASM_OUTPUT_IDENT, undef IDENT_ASM_OP from elfos.h. */
1397 #undef ASM_OUTPUT_IDENT
1398 #define ASM_OUTPUT_IDENT(FILE, NAME) \
1399 fprintf (FILE, "%s\"%s\"\n", "\t.ident\t", NAME);
1401 #define ASM_APP_ON "#APP\n"
1403 #define ASM_APP_OFF "#NO_APP\n"
1406 /* Node: Data Output */
1408 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) (C) == '@'
1410 /* Node: Uninitialized Data */
1412 /* Remember to round off odd values if we want data alignment,
1413 since we cannot do that with an .align directive.
1415 Using .comm causes the space not to be reserved in .bss, but by
1416 tricks with the symbol type. Not good if other tools than binutils
1417 are used on the object files. Since ".global ... .lcomm ..." works, we
1418 use that. Use .._ALIGNED_COMMON, since gcc whines when we only have
1419 ..._COMMON, and we prefer to whine ourselves; BIGGEST_ALIGNMENT is not
1420 the one to check. This done for a.out only. */
1421 /* FIXME: I suspect a bug in gcc with alignment. Do not warn until
1422 investigated; it mucks up the testsuite results. */
1423 #define CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, LOCAL) \
1426 int align_ = (ALIGN) / BITS_PER_UNIT; \
1427 if (TARGET_DATA_ALIGN && TARGET_ALIGN_BY_32 && align_ < 4) \
1429 else if (TARGET_DATA_ALIGN && align_ < 2) \
1431 /* FIXME: Do we need this? */ \
1432 else if (align_ < 1) \
1439 fprintf ((FILE), "%s", LOCAL_ASM_OP); \
1440 assemble_name ((FILE), (NAME)); \
1441 fprintf ((FILE), "\n"); \
1443 fprintf ((FILE), "%s", COMMON_ASM_OP); \
1444 assemble_name ((FILE), (NAME)); \
1445 fprintf ((FILE), ",%u,%u\n", (int)(SIZE), align_); \
1449 /* We can't tell a one-only or weak COMM from a "global \
1450 COMM" so just make all non-locals weak. */ \
1452 ASM_WEAKEN_LABEL (FILE, NAME); \
1453 fputs ("\t.lcomm ", (FILE)); \
1454 assemble_name ((FILE), (NAME)); \
1455 fprintf ((FILE), ",%u\n", \
1456 ((int)(SIZE) + (align_ - 1)) & ~(align_ - 1)); \
1461 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
1462 CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, 0)
1464 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
1465 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
1466 CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, 1)
1468 /* FIXME: define ASM_OUTPUT_SHARED_COMMON and emit an error when it is
1469 used with -melinux and a.out. */
1471 /* Node: Label Output */
1473 /* Globalizing directive for a label. */
1474 #define GLOBAL_ASM_OP "\t.global "
1476 #define SUPPORTS_WEAK 1
1478 /* Remove any previous definition (elfos.h). */
1479 #undef ASM_GENERATE_INTERNAL_LABEL
1480 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
1481 sprintf (LABEL, "*%s%s%ld", LOCAL_LABEL_PREFIX, PREFIX, (long) NUM)
1483 /* Node: Initialization */
1484 /* (no definitions) */
1486 /* Node: Macros for Initialization */
1487 /* (no definitions) */
1489 /* Node: Instruction Output */
1491 #define REGISTER_NAMES \
1492 {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
1493 "r9", "r10", "r11", "r12", "r13", "sp", "pc", "srp", "faked_ap"}
1495 #define ADDITIONAL_REGISTER_NAMES \
1496 {{"r14", 14}, {"r15", 15}}
1498 #define PRINT_OPERAND(FILE, X, CODE) \
1499 cris_print_operand (FILE, X, CODE)
1501 /* For delay-slot handling. */
1502 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
1503 ((CODE) == '#' || (CODE) == '!')
1505 #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
1506 cris_print_operand_address (FILE, ADDR)
1508 /* Output an empty line to illustrate the presence of the delay slot. */
1509 #define DBR_OUTPUT_SEQEND(FILE) \
1510 fprintf (FILE, "\n")
1512 #define LOCAL_LABEL_PREFIX (TARGET_ELF ? "." : "")
1514 /* cppinit.c initializes a const array from this, so it must be constant,
1515 can't have it different based on options. Luckily, the prefix is
1516 always allowed, so let's have it on all GCC-generated code. Note that
1517 we have this verbatim everywhere in the back-end, not using %R or %s or
1519 #define REGISTER_PREFIX "$"
1521 /* Remove any previous definition (elfos.h). */
1522 /* We use -fno-leading-underscore to remove it, when necessary. */
1523 #undef USER_LABEL_PREFIX
1524 #define USER_LABEL_PREFIX "_"
1526 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \
1527 fprintf (FILE, "\tpush $%s\n", reg_names[REGNO])
1529 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \
1530 fprintf (FILE, "\tpop $%s\n", reg_names[REGNO])
1533 /* Node: Dispatch Tables */
1535 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
1536 asm_fprintf (FILE, "\t.word %LL%d-%LL%d\n", VALUE, REL)
1538 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
1539 asm_fprintf (FILE, "\t.dword %LL%d\n", VALUE)
1541 /* Defined to also emit an .align in elfos.h. We don't want that. */
1542 #undef ASM_OUTPUT_CASE_LABEL
1544 /* Since the "bound" insn loads the comparison value if the compared<
1545 value (register) is out of bounds (0..comparison value-1), we need
1546 to output another case to catch it.
1547 The way to find it is to look for the label_ref at the else-arm inside
1548 the expanded casesi core-insn.
1549 FIXME: Check this construct when changing to new version of gcc. */
1550 #define ASM_OUTPUT_CASE_END(STREAM, NUM, TABLE) \
1553 asm_fprintf (STREAM, "\t.word %LL%d-%LL%d%s\n", \
1557 (PATTERN (PREV_INSN (PREV_INSN \
1559 0, 0), 1), 2), 0)), \
1561 (TARGET_PDEBUG ? "; default" : "")); \
1566 /* Node: Exception Region Output */
1567 /* (no definitions) */
1568 /* FIXME: Fill in with our own optimized layout. */
1570 /* Node: Alignment Output */
1572 #define ASM_OUTPUT_ALIGN(FILE, LOG) \
1573 fprintf (FILE, "\t.align %d\n", (LOG))
1576 /* Node: All Debuggers */
1578 #define DBX_REGISTER_NUMBER(REGNO) \
1579 ((REGNO) == CRIS_SRP_REGNUM ? CRIS_CANONICAL_SRP_REGNUM : (REGNO))
1581 /* FIXME: Investigate DEBUGGER_AUTO_OFFSET, DEBUGGER_ARG_OFFSET. */
1584 /* Node: DBX Options */
1586 /* Is this correct? Check later. */
1587 #define DBX_NO_XREFS
1589 #define DBX_CONTIN_LENGTH 0
1591 /* FIXME: Is this needed when we have 0 DBX_CONTIN_LENGTH? */
1592 #define DBX_CONTIN_CHAR '?'
1595 /* Node: DBX Hooks */
1596 /* (no definitions) */
1598 /* Node: File names and DBX */
1599 /* (no definitions) */
1602 /* Node: SDB and DWARF */
1603 /* (no definitions) */
1607 /* FIXME: Check this one more time. */
1608 #define PREDICATE_CODES \
1609 {"cris_orthogonal_operator", \
1610 {PLUS, MINUS, IOR, AND, UMIN}}, \
1611 {"cris_commutative_orth_op", \
1612 {PLUS, IOR, AND, UMIN}}, \
1613 {"cris_operand_extend_operator", \
1614 {PLUS, MINUS, UMIN}}, \
1615 {"cris_additive_operand_extend_operator", \
1617 {"cris_extend_operator", \
1618 {ZERO_EXTEND, SIGN_EXTEND}}, \
1619 {"cris_plus_or_bound_operator", \
1623 {"cris_bdap_operand", \
1624 {SUBREG, REG, LABEL_REF, SYMBOL_REF, MEM, CONST_INT, \
1625 CONST_DOUBLE, CONST, SIGN_EXTEND}}, \
1626 {"cris_bdap_biap_operand", \
1627 {SUBREG, REG, LABEL_REF, SYMBOL_REF, MEM, CONST_INT, \
1628 CONST_DOUBLE, CONST, SIGN_EXTEND, MULT}}, \
1629 {"cris_general_operand_or_gotless_symbol", \
1630 {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF, \
1631 LABEL_REF, SUBREG, REG, MEM}}, \
1632 {"cris_general_operand_or_symbol", \
1633 {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF, \
1634 LABEL_REF, SUBREG, REG, MEM}}, \
1635 {"cris_general_operand_or_plt_symbol", \
1636 {CONST_INT, CONST_DOUBLE, CONST, SYMBOL_REF, \
1637 LABEL_REF, SUBREG, REG, MEM}}, \
1638 {"cris_mem_call_operand", \
1641 /* A combination of the bound (umin) insn together with a
1642 sign-extended add via the table to PC seems optimal.
1643 If the table overflows, the assembler will take care of it.
1644 Theoretically, in extreme cases (uncertain if they occur), an error
1645 will be emitted, so FIXME: Check how large case-tables are emitted,
1646 possible add an option to emit SImode case-tables. */
1647 #define CASE_VECTOR_MODE HImode
1649 #define CASE_VECTOR_PC_RELATIVE 1
1651 /* FIXME: Investigate CASE_VECTOR_SHORTEN_MODE to make sure HImode is not
1652 used when broken-.word could possibly fail (plus testcase). */
1654 #define FIXUNS_TRUNC_LIKE_FIX_TRUNC
1656 /* This is the number of bytes that can be moved in one
1657 reasonably fast instruction sequence. For CRIS, this is two
1658 instructions: mem => reg, reg => mem. */
1661 /* Maybe SHIFT_COUNT_TRUNCATED is safe to define? FIXME: Check later. */
1663 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
1665 #define Pmode SImode
1667 #define FUNCTION_MODE QImode
1669 #define NO_IMPLICIT_EXTERN_C
1673 * eval: (c-set-style "gnu")
1674 * indent-tabs-mode: t