1 /* Definitions for GCC. Part of the machine description for CRIS. 2 Copyright (C) 1998-2018 Free Software Foundation, Inc. 3 Contributed by Axis Communications. Written by Hans-Peter Nilsson. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3, or (at your option) 10 any later version. 11 12 GCC is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 /* After the first "Node:" comment comes all preprocessor directives and 22 attached declarations described in the info files, the "Using and 23 Porting GCC" manual (uapgcc), in the same order as found in the "Target 24 macros" section in the gcc-2.9x CVS edition of 2000-03-17. FIXME: Not 25 really, but needs an update anyway. 26 27 There is no generic copy-of-uapgcc comment, you'll have to see uapgcc 28 for that. If applicable, there is a CRIS-specific comment. The order 29 of macro definitions follow the order in the manual. Every section in 30 the manual (node in the info pages) has an introductory `Node: 31 <subchapter>' comment. If no macros are defined for a section, only 32 the section-comment is present. */ 33 34 /* Note that other header files (e.g. config/elfos.h, config/linux.h, 35 and config/cris/linux.h) are responsible for lots of settings not 36 repeated below. This file contains general CRIS definitions 37 and definitions for the cris-*-elf subtarget. */ 38 39 /* We don't want to use gcc_assert for everything, as that can be 40 compiled out. */ 41 #define CRIS_ASSERT(x) \ 42 do { if (!(x)) internal_error ("CRIS-port assertion failed: " #x); } while (0) 43 44 /* Replacement for REG_P since it does not match SUBREGs. Happens for 45 testcase Axis-20000320 with gcc-2.9x. */ 46 #define REG_S_P(x) \ 47 (REG_P (x) || (GET_CODE (x) == SUBREG && REG_P (XEXP (x, 0)))) 48 49 /* Last register in main register bank r0..r15. */ 50 #define CRIS_LAST_GENERAL_REGISTER 15 51 52 /* Descriptions of registers used for arguments. */ 53 #define CRIS_FIRST_ARG_REG 10 54 #define CRIS_MAX_ARGS_IN_REGS 4 55 56 /* See also *_REGNUM constants in cris.md. */ 57 58 /* Most of the time, we need the index into the register-names array. 59 When passing debug-info, we need the real hardware register number. */ 60 #define CRIS_CANONICAL_SRP_REGNUM (16 + 11) 61 #define CRIS_CANONICAL_MOF_REGNUM (16 + 7) 62 /* We have CCR in all models including v10, but that's 16 bits, so let's 63 prefer the DCCR number, which is a DMA pointer in pre-v8, so we'll 64 never clash with it for GCC purposes. */ 65 #define CRIS_CANONICAL_CC0_REGNUM (16 + 13) 66 67 /* When generating PIC, these suffixes are added to the names of non-local 68 functions when being output. Contrary to other ports, we have offsets 69 relative to the GOT, not the PC. We might implement PC-relative PLT 70 semantics later for the general case; they are used in some cases right 71 now, such as MI thunks. */ 72 #define CRIS_GOTPLT_SUFFIX ":GOTPLT" 73 #define CRIS_PLT_GOTOFFSET_SUFFIX ":PLTG" 74 #define CRIS_PLT_PCOFFSET_SUFFIX ":PLT" 75 76 #define CRIS_FUNCTION_ARG_SIZE(MODE, TYPE) \ 77 ((MODE) != BLKmode ? GET_MODE_SIZE (MODE) \ 78 : (unsigned) int_size_in_bytes (TYPE)) 79 80 /* Which CPU version this is. The parsed and adjusted cris_cpu_str. */ 81 extern int cris_cpu_version; 82 83 84 /* Node: Driver */ 85 86 /* Also provide canonical vN definitions when user specifies an alias. */ 87 88 #define CPP_SPEC \ 89 "%{mtune=*:-D__tune_%* %{mtune=v*:-D__CRIS_arch_tune=%*}\ 90 %{mtune=etrax4:-D__tune_v3 -D__CRIS_arch_tune=3}\ 91 %{mtune=etrax100:-D__tune_v8 -D__CRIS_arch_tune=8}\ 92 %{mtune=svinto:-D__tune_v8 -D__CRIS_arch_tune=8}\ 93 %{mtune=etrax100lx:-D__tune_v10 -D__CRIS_arch_tune=10}\ 94 %{mtune=ng:-D__tune_v10 -D__CRIS_arch_tune=10}}\ 95 %{mcpu=*:-D__arch_%* %{mcpu=v*:-D__CRIS_arch_version=%*}\ 96 %{mcpu=etrax4:-D__arch_v3 -D__CRIS_arch_version=3}\ 97 %{mcpu=etrax100:-D__arch_v8 -D__CRIS_arch_version=8}\ 98 %{mcpu=svinto:-D__arch_v8 -D__CRIS_arch_version=8}\ 99 %{mcpu=etrax100lx:-D__arch_v10 -D__CRIS_arch_version=10}\ 100 %{mcpu=ng:-D__arch_v10 -D__CRIS_arch_version=10}}\ 101 %{march=*:-D__arch_%* %{march=v*:-D__CRIS_arch_version=%*}\ 102 %{march=etrax4:-D__arch_v3 -D__CRIS_arch_version=3}\ 103 %{march=etrax100:-D__arch_v8 -D__CRIS_arch_version=8}\ 104 %{march=svinto:-D__arch_v8 -D__CRIS_arch_version=8}\ 105 %{march=etrax100lx:-D__arch_v10 -D__CRIS_arch_version=10}\ 106 %{march=ng:-D__arch_v10 -D__CRIS_arch_version=10}}\ 107 %{metrax100:-D__arch__v8 -D__CRIS_arch_version=8}\ 108 %{metrax4:-D__arch__v3 -D__CRIS_arch_version=3}\ 109 %(cpp_subtarget)" 110 111 /* For the cris-*-elf subtarget. */ 112 113 #define CRIS_DEFAULT_TUNE "10" 114 #define CRIS_ARCH_CPP_DEFAULT 115 #define CRIS_DEFAULT_ASM_ARCH_OPTION "" 116 117 #ifdef TARGET_CPU_DEFAULT 118 #if TARGET_CPU_DEFAULT != 32 && TARGET_CPU_DEFAULT != 10 119 #error "Due to '()'; e.g. '#define TARGET_CPU_DEFAULT (10)', stringize TARGET_CPU_DEFAULT isn't useful: update manually." 120 #endif 121 122 #if TARGET_CPU_DEFAULT == 32 123 #undef CRIS_DEFAULT_TUNE 124 #define CRIS_DEFAULT_TUNE "32" 125 /* To enable use of "generic" cris-axis-elf binutils, always pass the 126 architecture option to GAS. (We don't do this for non-v32.) */ 127 #undef CRIS_DEFAULT_ASM_ARCH_OPTION 128 #define CRIS_DEFAULT_ASM_ARCH_OPTION "--march=v32" 129 #endif 130 131 #undef CRIS_ARCH_CPP_DEFAULT 132 #define CRIS_ARCH_CPP_DEFAULT \ 133 "%{!march=*:\ 134 %{!metrax*:\ 135 %{!mcpu=*:\ 136 %{!mtune=*:-D__tune_v" CRIS_DEFAULT_TUNE "}\ 137 -D__arch_v" CRIS_DEFAULT_TUNE \ 138 " -D__CRIS_arch_version=" CRIS_DEFAULT_TUNE "}}}" 139 #endif 140 141 #define CRIS_CPP_SUBTARGET_SPEC \ 142 "%{mbest-lib-options:\ 143 %{!moverride-best-lib-options:\ 144 %{!march=*:%{!metrax*:%{!mcpu=*:\ 145 -D__tune_v" CRIS_DEFAULT_TUNE \ 146 " -D__CRIS_arch_tune=" CRIS_DEFAULT_TUNE "}}}}}"\ 147 CRIS_ARCH_CPP_DEFAULT 148 149 /* Override previous definitions (../linux.h). */ 150 #undef CC1_SPEC 151 #define CC1_SPEC \ 152 "%{metrax4:-march=v3}\ 153 %{metrax100:-march=v8}\ 154 %{march=*:-march=%*}\ 155 %{mcpu=*:-mcpu=%*}\ 156 %(cc1_subtarget)" 157 158 /* For the cris-*-elf subtarget. */ 159 #define CRIS_CC1_SUBTARGET_SPEC \ 160 "-melf\ 161 %{mbest-lib-options:\ 162 %{!moverride-best-lib-options:\ 163 %{!march=*:%{!mcpu=*:-mtune=v" CRIS_DEFAULT_TUNE\ 164 " -D__CRIS_arch_tune=" CRIS_DEFAULT_TUNE "}}\ 165 %{!finhibit-size-directive:\ 166 %{!fno-function-sections: -ffunction-sections}\ 167 %{!fno-data-sections: -fdata-sections}}}}" 168 169 /* This adds to CC1_SPEC. */ 170 #define CC1PLUS_SPEC "" 171 172 #ifdef HAVE_AS_NO_MUL_BUG_ABORT_OPTION 173 #define MAYBE_AS_NO_MUL_BUG_ABORT \ 174 "%{mno-mul-bug-workaround:-no-mul-bug-abort} " 175 #else 176 #define MAYBE_AS_NO_MUL_BUG_ABORT 177 #endif 178 179 /* Override previous definitions (../linux.h). */ 180 #undef ASM_SPEC 181 #define ASM_SPEC \ 182 MAYBE_AS_NO_MUL_BUG_ABORT \ 183 "%(asm_subtarget)\ 184 %{march=*:%{mcpu=*:%edo not specify both -march=... and -mcpu=...}}\ 185 %{march=v0|mcpu=v0|march=v3|mcpu=v3|march=v8|mcpu=v8:--march=v0_v10}\ 186 %{march=v10|mcpu=v10:--march=v10}\ 187 %{march=v32|mcpu=v32:--march=v32}" 188 189 /* For the cris-*-elf subtarget. */ 190 #define CRIS_ASM_SUBTARGET_SPEC \ 191 "--em=criself %{!march=*:%{!mcpu=*:" CRIS_DEFAULT_ASM_ARCH_OPTION "}}" 192 193 /* FIXME: We should propagate the -melf option to make the criself 194 "emulation" unless a linker script is provided (-T*), but I don't know 195 how to do that if either of -Ttext, -Tdata or -Tbss is given but no 196 linker script, as is usually the case. Leave it to the user for the 197 time being. */ 198 #undef LINK_SPEC 199 #define LINK_SPEC \ 200 "%{v:--verbose}\ 201 %(link_subtarget)" 202 203 /* For the cris-*-elf subtarget. */ 204 #define CRIS_LINK_SUBTARGET_SPEC \ 205 "-mcriself\ 206 %{sim2:%{!T*:-Tdata 0x4000000 -Tbss 0x8000000}}\ 207 %{!r:%{O2|O3: --gc-sections}}" 208 209 /* Which library to get. The simulator uses a different library for 210 the low-level syscalls (implementing the Linux syscall ABI instead 211 of direct-iron accesses). Default everything with the stub "nosys" 212 library. */ 213 /* Override previous definitions (linux.h). */ 214 #undef LIB_SPEC 215 #define LIB_SPEC \ 216 "%{sim*:--start-group -lc -lsyslinux --end-group}\ 217 %{!sim*:%{g*:-lg}\ 218 %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} -lbsp}\ 219 -lnosys" 220 221 /* Linker startfile options; crt0 flavors. 222 We need to remove any previous definition (elfos.h). */ 223 #undef STARTFILE_SPEC 224 #define STARTFILE_SPEC \ 225 "%{sim*:crt1.o%s}%{!sim*:crt0.o%s}\ 226 crti.o%s crtbegin.o%s" 227 228 #undef ENDFILE_SPEC 229 #define ENDFILE_SPEC "crtend.o%s crtn.o%s" 230 231 #define EXTRA_SPECS \ 232 {"cpp_subtarget", CRIS_CPP_SUBTARGET_SPEC}, \ 233 {"cc1_subtarget", CRIS_CC1_SUBTARGET_SPEC}, \ 234 {"asm_subtarget", CRIS_ASM_SUBTARGET_SPEC}, \ 235 {"link_subtarget", CRIS_LINK_SUBTARGET_SPEC}, \ 236 CRIS_SUBTARGET_EXTRA_SPECS 237 238 #define CRIS_SUBTARGET_EXTRA_SPECS 239 240 241 /* Node: Run-time Target */ 242 243 #define TARGET_CPU_CPP_BUILTINS() \ 244 do \ 245 { \ 246 builtin_define_std ("cris"); \ 247 builtin_define_std ("CRIS"); \ 248 builtin_define_std ("GNU_CRIS"); \ 249 builtin_define ("__CRIS_ABI_version=2"); \ 250 builtin_assert ("cpu=cris"); \ 251 builtin_assert ("machine=cris"); \ 252 } \ 253 while (0) 254 255 /* Previously controlled by target_flags. Note that this is *not* set 256 for -melinux. */ 257 #define TARGET_LINUX 0 258 259 /* For the cris-*-elf subtarget. */ 260 #define CRIS_SUBTARGET_DEFAULT 0 261 262 #define CRIS_CPU_BASE 0 263 #define CRIS_CPU_ETRAX4 3 /* Just lz added. */ 264 #define CRIS_CPU_SVINTO 8 /* Added swap, jsrc & Co., 32-bit accesses. */ 265 #define CRIS_CPU_NG 10 /* Added mul[su]. */ 266 #define CRIS_CPU_V32 32 /* Major changes. */ 267 268 #ifndef TARGET_CPU_DEFAULT 269 #define TARGET_CPU_DEFAULT CRIS_CPU_BASE 270 #endif 271 272 /* Default target_flags if no switches specified. 273 The alignment-by-32 is to make builtin atomic support for v10 and v32 274 work for *-elf for types without specified alignment (like plain 275 "int"). See top comment in sync.md. */ 276 #ifndef TARGET_DEFAULT 277 # if TARGET_CPU_DEFAULT == 32 278 # define TARGET_DEFAULT \ 279 (MASK_STACK_ALIGN \ 280 + MASK_CONST_ALIGN + MASK_DATA_ALIGN \ 281 + MASK_ALIGN_BY_32 \ 282 + MASK_PROLOGUE_EPILOGUE) 283 # elif TARGET_CPU_DEFAULT == 10 284 # define TARGET_DEFAULT \ 285 (MASK_SIDE_EFFECT_PREFIXES + MASK_STACK_ALIGN \ 286 + MASK_CONST_ALIGN + MASK_DATA_ALIGN \ 287 + MASK_ALIGN_BY_32 \ 288 + MASK_PROLOGUE_EPILOGUE + MASK_MUL_BUG) 289 # else /* 0 */ 290 # define TARGET_DEFAULT \ 291 (MASK_SIDE_EFFECT_PREFIXES + MASK_STACK_ALIGN \ 292 + MASK_CONST_ALIGN + MASK_DATA_ALIGN \ 293 + MASK_PROLOGUE_EPILOGUE + MASK_MUL_BUG) 294 # endif 295 #endif 296 297 /* Local, providing a default for cris_cpu_version. */ 298 #define CRIS_DEFAULT_CPU_VERSION TARGET_CPU_DEFAULT 299 300 #define TARGET_HAS_MUL_INSNS (cris_cpu_version >= CRIS_CPU_NG) 301 #define TARGET_HAS_LZ (cris_cpu_version >= CRIS_CPU_ETRAX4) 302 #define TARGET_HAS_BREAK (cris_cpu_version >= CRIS_CPU_ETRAX4) 303 #define TARGET_HAS_SWAP (cris_cpu_version >= CRIS_CPU_SVINTO) 304 #define TARGET_V32 (cris_cpu_version >= CRIS_CPU_V32) 305 306 /* The "break" instruction was introduced with ETRAX 4. */ 307 #define TARGET_TRAP_USING_BREAK8 \ 308 (cris_trap_using_break8 == 2 ? TARGET_HAS_BREAK : cris_trap_using_break8) 309 310 /* Call library functions by default for GNU/Linux. */ 311 #define TARGET_ATOMICS_MAY_CALL_LIBFUNCS \ 312 (cris_atomics_calling_libfunc == 2 \ 313 ? TARGET_LINUX : cris_atomics_calling_libfunc) 314 315 /* The < v10 atomics turn off interrupts, so they don't need alignment. 316 Incidentally, by default alignment is off there causing variables to 317 be default unaligned all over, so we'd have to make support 318 libraries use a proper atomic type (instead of "int"), one we'd 319 specify as aligned. */ 320 #define TARGET_TRAP_UNALIGNED_ATOMIC \ 321 (cris_trap_unaligned_atomic == 2 \ 322 ? (TARGET_V32 || cris_cpu_version == 10) \ 323 : cris_trap_unaligned_atomic) 324 325 /* Node: Storage Layout */ 326 327 #define BITS_BIG_ENDIAN 0 328 329 #define BYTES_BIG_ENDIAN 0 330 331 /* WORDS_BIG_ENDIAN is not defined in the hardware, but for consistency, 332 we use little-endianness, and we may also be able to use 333 post-increment on DImode indirect. */ 334 #define WORDS_BIG_ENDIAN 0 335 336 #define UNITS_PER_WORD 4 337 338 #define CRIS_PROMOTED_MODE(MODE, UNSIGNEDP, TYPE) \ 339 (GET_MODE_CLASS (MODE) == MODE_INT && GET_MODE_SIZE (MODE) < 4) \ 340 ? SImode : MODE 341 342 /* We will be using prototype promotion, so they will be 32 bit. */ 343 #define PARM_BOUNDARY 32 344 345 /* Stack boundary is guided by -mstack-align, -mno-stack-align, 346 -malign. 347 Old comment: (2.1: still valid in 2.7.2?) 348 Note that to make this macro affect the alignment of stack 349 locals, a fix was required, and special precautions when handling 350 the stack pointer in various other macros (TARGET_ASM_FUNCTION_PROLOGUE 351 et al) were required. See file "function.c". If you would just define 352 this macro, it would only affect the builtin alloca and variable 353 local data (non-ANSI, non-K&R, Gnu C extension). */ 354 #define STACK_BOUNDARY \ 355 (TARGET_STACK_ALIGN ? (TARGET_ALIGN_BY_32 ? 32 : 16) : 8) 356 357 #define FUNCTION_BOUNDARY 16 358 359 /* Do not change BIGGEST_ALIGNMENT (when optimizing), as it will affect 360 strange places, at least in 2.1. */ 361 #define BIGGEST_ALIGNMENT 8 362 363 /* If -m16bit, -m16-bit, -malign or -mdata-align, 364 align everything to 16 bit. */ 365 #define DATA_ALIGNMENT(TYPE, BASIC_ALIGN) \ 366 (TARGET_DATA_ALIGN \ 367 ? (TARGET_ALIGN_BY_32 \ 368 ? (BASIC_ALIGN < 32 ? 32 : BASIC_ALIGN) \ 369 : (BASIC_ALIGN < 16 ? 16 : BASIC_ALIGN)) : BASIC_ALIGN) 370 371 /* FIXME: Define LOCAL_ALIGNMENT for word and dword or arrays and 372 structures (if -mstack-align=), and check that it is good. */ 373 374 #define EMPTY_FIELD_BOUNDARY 8 375 376 #define STRUCTURE_SIZE_BOUNDARY 8 377 378 #define STRICT_ALIGNMENT 0 379 380 /* Remove any previous definition (elfos.h). 381 ??? If it wasn't for all the other stuff that affects layout of 382 structures and bit-fields, this could presumably cause incompatibility 383 with other GNU/Linux ports (i.e. elfos.h users). */ 384 #undef PCC_BITFIELD_TYPE_MATTERS 385 386 /* This is only used for non-scalars. Strange stuff happens to structs 387 (FIXME: What?) if we use anything larger than largest actually used 388 datum size, so lets make it 32. The type "long long" will still work 389 as usual. We can still have DImode insns, but they will only be used 390 for scalar data (i.e. long long). */ 391 #define MAX_FIXED_MODE_SIZE 32 392 393 394 /* Node: Type Layout */ 395 396 /* Note that DOUBLE_TYPE_SIZE is not defined anymore, since the default 397 value gives a 64-bit double, which is what we now use. */ 398 399 /* For compatibility and historical reasons, a char should be signed. */ 400 #define DEFAULT_SIGNED_CHAR 1 401 402 /* Note that WCHAR_TYPE_SIZE is used in cexp.y, 403 where TARGET_SHORT is not available. */ 404 #undef WCHAR_TYPE 405 #define WCHAR_TYPE "long int" 406 407 #undef WCHAR_TYPE_SIZE 408 #define WCHAR_TYPE_SIZE 32 409 410 411 /* Node: Register Basics */ 412 413 /* We count all 16 non-special registers, SRP, a faked argument 414 pointer register, MOF and CCR/DCCR. */ 415 #define FIRST_PSEUDO_REGISTER (16 + 1 + 1 + 1 + 1) 416 417 /* For CRIS, these are r15 (pc) and r14 (sp). Register r8 is used as a 418 frame-pointer, but is not fixed. SRP is not included in general 419 registers and will not be used automatically. All other special 420 registers are fixed at the moment. The faked argument pointer register 421 is fixed too. */ 422 #define FIXED_REGISTERS \ 423 {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1} 424 425 /* Register r9 is used for structure-address, r10-r13 for parameters, 426 r10- for return values. */ 427 #define CALL_USED_REGISTERS \ 428 {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1} 429 430 /* Node: Allocation Order */ 431 432 /* We need this on CRIS, because call-used regs should be used first, 433 (so we don't need to push). Else start using registers from r0 and up. 434 This preference is mainly because if we put call-used-regs from r0 435 and up, then we can't use movem to push the rest, (which have to be 436 saved if we use them, and movem has to start with r0). 437 Change here if you change which registers to use as call registers. 438 439 The actual need to explicitly prefer call-used registers improved the 440 situation a lot for 2.1, but might not actually be needed anymore. 441 Still, this order reflects what GCC should find out by itself, so it 442 probably does not hurt. 443 444 Order of preference: Call-used-regs first, then r0 and up, last fp & 445 sp & pc as fillers. 446 Call-used regs in opposite order, so they will cause less conflict if 447 a function has few args (<= 3) and it wants a scratch reg. 448 Use struct-return address first, since very few functions use 449 structure return values so it is likely to be available. */ 450 #define REG_ALLOC_ORDER \ 451 {9, 13, 12, 11, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 14, 15, 17, 16, 18, 19} 452 453 /* Use MOF and ACR. Prefer ACR before any other register. Prefer MOF 454 then SRP after saved registers. The *after* is because they're only 455 useful for storage, not for things being computed, which is 456 apparently more common. */ 457 #define REG_ALLOC_ORDER_V32 \ 458 {15, 9, 13, 12, 11, 10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 17, 16, 14, 18, 19} 459 460 461 /* Node: Leaf Functions */ 462 /* (no definitions) */ 463 464 /* Node: Stack Registers */ 465 /* (no definitions) */ 466 467 468 /* Node: Register Classes */ 469 470 /* We need a separate register class to handle register allocation for 471 ACR, since it can't be used for post-increment. 472 473 It's not obvious, but having subunions of all movable-between 474 register classes does really help register allocation (pre-IRA 475 comment). */ 476 enum reg_class 477 { 478 NO_REGS, 479 ACR_REGS, MOF_REGS, SRP_REGS, CC0_REGS, 480 MOF_SRP_REGS, SPECIAL_REGS, 481 SPEC_ACR_REGS, GENNONACR_REGS, 482 SPEC_GENNONACR_REGS, GENERAL_REGS, 483 ALL_REGS, 484 LIM_REG_CLASSES 485 }; 486 487 #define N_REG_CLASSES (int) LIM_REG_CLASSES 488 489 #define REG_CLASS_NAMES \ 490 {"NO_REGS", \ 491 "ACR_REGS", "MOF_REGS", "SRP_REGS", "CC0_REGS", \ 492 "MOF_SRP_REGS", "SPECIAL_REGS", \ 493 "SPEC_ACR_REGS", "GENNONACR_REGS", "SPEC_GENNONACR_REGS", \ 494 "GENERAL_REGS", "ALL_REGS"} 495 496 #define CRIS_SPECIAL_REGS_CONTENTS \ 497 ((1 << CRIS_SRP_REGNUM) | (1 << CRIS_MOF_REGNUM) | (1 << CRIS_CC0_REGNUM)) 498 499 /* Count in the faked argument register in GENERAL_REGS. Keep out SRP. */ 500 #define REG_CLASS_CONTENTS \ 501 { \ 502 {0}, \ 503 {1 << CRIS_ACR_REGNUM}, \ 504 {1 << CRIS_MOF_REGNUM}, \ 505 {1 << CRIS_SRP_REGNUM}, \ 506 {1 << CRIS_CC0_REGNUM}, \ 507 {(1 << CRIS_MOF_REGNUM) \ 508 | (1 << CRIS_SRP_REGNUM)}, \ 509 {CRIS_SPECIAL_REGS_CONTENTS}, \ 510 {CRIS_SPECIAL_REGS_CONTENTS \ 511 | (1 << CRIS_ACR_REGNUM)}, \ 512 {(0xffff | (1 << CRIS_AP_REGNUM)) \ 513 & ~(1 << CRIS_ACR_REGNUM)}, \ 514 {(0xffff | (1 << CRIS_AP_REGNUM) \ 515 | CRIS_SPECIAL_REGS_CONTENTS) \ 516 & ~(1 << CRIS_ACR_REGNUM)}, \ 517 {0xffff | (1 << CRIS_AP_REGNUM)}, \ 518 {0xffff | (1 << CRIS_AP_REGNUM) \ 519 | CRIS_SPECIAL_REGS_CONTENTS} \ 520 } 521 522 #define REGNO_REG_CLASS(REGNO) \ 523 ((REGNO) == CRIS_ACR_REGNUM ? ACR_REGS : \ 524 (REGNO) == CRIS_MOF_REGNUM ? MOF_REGS : \ 525 (REGNO) == CRIS_SRP_REGNUM ? SRP_REGS : \ 526 (REGNO) == CRIS_CC0_REGNUM ? CC0_REGS : \ 527 GENERAL_REGS) 528 529 #define BASE_REG_CLASS GENERAL_REGS 530 531 #define MODE_CODE_BASE_REG_CLASS(MODE, AS, OCODE, ICODE) \ 532 ((OCODE) != POST_INC ? BASE_REG_CLASS : GENNONACR_REGS) 533 534 #define INDEX_REG_CLASS GENERAL_REGS 535 536 /* Since it uses reg_renumber, it is safe only once reg_renumber 537 has been allocated, which happens in reginfo.c during register 538 allocation. */ 539 #define REGNO_OK_FOR_BASE_P(REGNO) \ 540 ((REGNO) <= CRIS_LAST_GENERAL_REGISTER \ 541 || (REGNO) == ARG_POINTER_REGNUM \ 542 || (unsigned) reg_renumber[REGNO] <= CRIS_LAST_GENERAL_REGISTER \ 543 || (unsigned) reg_renumber[REGNO] == ARG_POINTER_REGNUM) 544 545 /* REGNO_OK_FOR_BASE_P seems to be obsolete wrt. this one, but not yet 546 documented as such. */ 547 #define REGNO_MODE_CODE_OK_FOR_BASE_P(REGNO, MODE, AS, OCODE, ICODE) \ 548 (REGNO_OK_FOR_BASE_P (REGNO) \ 549 && ((OCODE) != POST_INC \ 550 || !((REGNO) == CRIS_ACR_REGNUM \ 551 || (unsigned) reg_renumber[REGNO] == CRIS_ACR_REGNUM))) 552 553 /* See REGNO_OK_FOR_BASE_P. */ 554 #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO) 555 556 /* We can't move special registers to and from memory in smaller than 557 word_mode. We also can't move between special registers. Luckily, 558 -1, as returned by true_regnum for non-sub/registers, is valid as a 559 parameter to our REGNO_REG_CLASS, returning GENERAL_REGS, so we get 560 the effect that any X that isn't a special-register is treated as 561 a non-empty intersection with GENERAL_REGS. */ 562 #define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \ 563 ((reg_class_subset_p (CLASS, SPECIAL_REGS) \ 564 && ((GET_MODE_SIZE (MODE) < 4 && MEM_P (X)) \ 565 || !reg_classes_intersect_p (REGNO_REG_CLASS (true_regnum (X)), \ 566 GENERAL_REGS))) \ 567 ? GENERAL_REGS : NO_REGS) 568 569 /* FIXME: Fix regrename.c; it should check validity of replacements, 570 not just with a silly pass-specific macro. We may miss some 571 opportunities, but we must stop regrename from creating acr++. */ 572 #define HARD_REGNO_RENAME_OK(FROM, TO) ((TO) != CRIS_ACR_REGNUM) 573 574 /* For CRIS, this is always the size of MODE in words, 575 since all registers are the same size. To use omitted modes in 576 patterns with reload constraints, you must say the widest size 577 which is allowed for VOIDmode. 578 FIXME: Does that still apply for gcc-2.9x? Keep poisoned until such 579 patterns are added back. News: 2001-03-16: Happens as early as the 580 underscore-test. */ 581 #define CLASS_MAX_NREGS(CLASS, MODE) \ 582 ((MODE) == VOIDmode \ 583 ? 1 /* + cris_fatal ("CLASS_MAX_NREGS with VOIDmode") */ \ 584 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) 585 586 587 /* Node: Frame Layout */ 588 589 #define STACK_GROWS_DOWNWARD 1 590 #define FRAME_GROWS_DOWNWARD 1 591 592 #define FIRST_PARM_OFFSET(FNDECL) 0 593 594 #define RETURN_ADDR_RTX(COUNT, FRAMEADDR) \ 595 cris_return_addr_rtx (COUNT, FRAMEADDR) 596 597 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, CRIS_SRP_REGNUM) 598 599 /* FIXME: Any __builtin_eh_return callers must not return anything and 600 there must not be collisions with incoming parameters. Luckily the 601 number of __builtin_eh_return callers is limited. For now return 602 parameter registers in reverse order and hope for the best. */ 603 #define EH_RETURN_DATA_REGNO(N) \ 604 (IN_RANGE ((N), 0, 3) ? (CRIS_FIRST_ARG_REG + 3 - (N)) : INVALID_REGNUM) 605 606 /* Store the stack adjustment in the structure-return-address register. */ 607 #define CRIS_STACKADJ_REG CRIS_STRUCT_VALUE_REGNUM 608 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, CRIS_STACKADJ_REG) 609 610 #define EH_RETURN_HANDLER_RTX \ 611 cris_return_addr_rtx (0, NULL) 612 613 #define INIT_EXPANDERS cris_init_expanders () 614 615 /* FIXME: Move this to right node (it's not documented properly yet). */ 616 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (CRIS_SRP_REGNUM) 617 618 /* FIXME: Move this to right node (it's not documented properly yet). 619 FIXME: Check what alignment we can assume regarding 620 TARGET_STACK_ALIGN and TARGET_ALIGN_BY_32. */ 621 #define DWARF_CIE_DATA_ALIGNMENT -1 622 623 /* If we would ever need an exact mapping between canonical register 624 number and dwarf frame register, we would either need to include all 625 registers in the gcc description (with some marked fixed of course), or 626 an inverse mapping from dwarf register to gcc register. There is one 627 need in dwarf2out.c:expand_builtin_init_dwarf_reg_sizes. Right now, I 628 don't see that we need exact correspondence between DWARF *frame* 629 registers and DBX_REGISTER_NUMBER, so map them onto GCC registers. */ 630 #define DWARF_FRAME_REGNUM(REG) (REG) 631 632 /* Node: Stack Checking */ 633 /* (no definitions) FIXME: Check. */ 634 635 /* Node: Frame Registers */ 636 637 #define STACK_POINTER_REGNUM CRIS_SP_REGNUM 638 639 /* Register used for frame pointer. This is also the last of the saved 640 registers, when a frame pointer is not used. */ 641 #define FRAME_POINTER_REGNUM CRIS_FP_REGNUM 642 643 /* Faked register, is always eliminated. We need it to eliminate 644 allocating stack slots for the return address and the frame pointer. */ 645 #define ARG_POINTER_REGNUM CRIS_AP_REGNUM 646 647 #define STATIC_CHAIN_REGNUM CRIS_STATIC_CHAIN_REGNUM 648 649 650 /* Node: Elimination */ 651 652 #define ELIMINABLE_REGS \ 653 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 654 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 655 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} 656 657 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 658 (OFFSET) = cris_initial_elimination_offset (FROM, TO) 659 660 661 /* Node: Stack Arguments */ 662 663 /* Since many parameters take up one register each in any case, 664 defining TARGET_PROMOTE_PROTOTYPES that always returns true would 665 seem like a good idea, but measurements indicate that a combination 666 using PROMOTE_MODE is better. */ 667 668 #define ACCUMULATE_OUTGOING_ARGS 1 669 670 671 /* Node: Register Arguments */ 672 673 /* Contrary to what you'd believe, defining FUNCTION_ARG_CALLEE_COPIES 674 seems like a (small total) loss, at least for gcc-2.7.2 compiling and 675 running gcc-2.1 (small win in size, small loss running -- 100.1%), 676 and similarly for size for products (.1 .. .3% bloat, sometimes win). 677 Due to the empirical likeliness of making slower code, it is not 678 defined. */ 679 680 /* This no longer *needs* to be a structure; but keeping it as such should 681 not hurt (and hacking the ABI is simpler). */ 682 #define CUMULATIVE_ARGS struct cum_args 683 struct cum_args {int regs;}; 684 685 /* The regs member is an integer, the number of arguments got into 686 registers so far. */ 687 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ 688 ((CUM).regs = 0) 689 690 #define FUNCTION_ARG_REGNO_P(REGNO) \ 691 ((REGNO) >= CRIS_FIRST_ARG_REG \ 692 && (REGNO) < CRIS_FIRST_ARG_REG + (CRIS_MAX_ARGS_IN_REGS)) 693 694 695 /* Node: Aggregate Return */ 696 697 #define CRIS_STRUCT_VALUE_REGNUM ((CRIS_FIRST_ARG_REG) - 1) 698 699 700 /* Node: Caller Saves */ 701 /* (no definitions) */ 702 703 /* Node: Function entry */ 704 705 /* See cris.c for TARGET_ASM_FUNCTION_PROLOGUE and 706 TARGET_ASM_FUNCTION_EPILOGUE. */ 707 708 /* Node: Profiling */ 709 710 #define FUNCTION_PROFILER(FILE, LABELNO) \ 711 error ("no FUNCTION_PROFILER for CRIS") 712 713 /* FIXME: Some of the undefined macros might be mandatory. If so, fix 714 documentation. */ 715 716 717 /* Node: Trampolines */ 718 719 #define TRAMPOLINE_SIZE (TARGET_V32 ? 58 : 32) 720 721 /* CRIS wants instructions on word-boundary. */ 722 #define TRAMPOLINE_ALIGNMENT 16 723 724 /* Node: Library Calls */ 725 726 /* If you change this, you have to check whatever libraries and systems 727 that use it. */ 728 #define TARGET_EDOM 33 729 730 731 /* Node: Addressing Modes */ 732 733 #define HAVE_POST_INCREMENT 1 734 735 #define CONSTANT_ADDRESS_P(X) \ 736 (CONSTANT_P (X) && cris_legitimate_address_p (QImode, X, false)) 737 738 /* Must be a compile-time constant, so we go with the highest value 739 among all CRIS variants. */ 740 #define MAX_REGS_PER_ADDRESS 2 741 742 /* Fix reloads known to cause suboptimal spilling. */ 743 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, INDL, WIN) \ 744 do \ 745 { \ 746 if (cris_reload_address_legitimized (X, MODE, OPNUM, TYPE, INDL)) \ 747 goto WIN; \ 748 } \ 749 while (0) 750 751 /* The mode argument to cris_legitimate_constant_p isn't used, so just 752 pass a cheap dummy. N.B. we have to cast away const from the 753 parameter rather than adjust the parameter, as it's type is mandated 754 by the TARGET_LEGITIMATE_CONSTANT_P target hook interface. */ 755 #define CRIS_CONSTANT_P(X) \ 756 (CONSTANT_P (X) && cris_legitimate_constant_p (VOIDmode, CONST_CAST_RTX (X))) 757 758 /* Node: Condition Code */ 759 760 #define NOTICE_UPDATE_CC(EXP, INSN) cris_notice_update_cc (EXP, INSN) 761 762 /* FIXME: Maybe define CANONICALIZE_COMPARISON later, when playing with 763 optimizations. It is needed; currently we do this with instruction 764 patterns and NOTICE_UPDATE_CC. */ 765 766 767 /* Node: Costs */ 768 769 /* Regardless of the presence of delay slots, the default value of 1 for 770 BRANCH_COST is the best in the range (1, 2, 3), tested with gcc-2.7.2 771 with testcases ipps and gcc, giving smallest and fastest code. */ 772 773 #define SLOW_BYTE_ACCESS 0 774 775 /* This is the threshold *below* which inline move sequences of 776 word-length sizes will be emitted. The "9" will translate to 777 (9 - 1) * 4 = 32 bytes maximum moved, but using 16 instructions 778 (8 instruction sequences) or less. */ 779 #define MOVE_RATIO(speed) 9 780 781 782 /* Node: Sections */ 783 784 #define TEXT_SECTION_ASM_OP "\t.text" 785 786 #define DATA_SECTION_ASM_OP "\t.data" 787 788 /* The jump table is immediately connected to the preceding insn. */ 789 #define JUMP_TABLES_IN_TEXT_SECTION 1 790 791 792 /* Node: PIC */ 793 794 /* Helper type. */ 795 796 enum cris_symbol_type 797 { 798 cris_no_symbol = 0, 799 cris_got_symbol = 1, 800 cris_rel_symbol = 2, 801 cris_got_symbol_needing_fixup = 3, 802 cris_unspec = 7, 803 cris_offsettable_symbol = 8 804 }; 805 806 #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? CRIS_GOT_REGNUM : INVALID_REGNUM) 807 808 #define LEGITIMATE_PIC_OPERAND_P(X) cris_legitimate_pic_operand (X) 809 810 811 /* Node: File Framework */ 812 813 /* We don't want an .ident for gcc. To avoid that but still support 814 #ident, we override TARGET_ASM_OUTPUT_IDENT and, since the gcc .ident 815 is its only use besides front-end .ident directives, we return if 816 the state if the cgraph is not PARSING. */ 817 #undef TARGET_ASM_OUTPUT_IDENT 818 #define TARGET_ASM_OUTPUT_IDENT cris_asm_output_ident 819 820 #define ASM_APP_ON "#APP\n" 821 822 #define ASM_APP_OFF "#NO_APP\n" 823 824 825 /* Node: Data Output */ 826 827 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) (C) == '@' 828 829 /* Node: Uninitialized Data */ 830 831 /* Remember to round off odd values if we want data alignment, 832 since we cannot do that with an .align directive. 833 834 Using .comm causes the space not to be reserved in .bss, but by 835 tricks with the symbol type. Not good if other tools than binutils 836 are used on the object files. Since ".global ... .lcomm ..." works, we 837 use that. Use .._ALIGNED_COMMON, since gcc whines when we only have 838 ..._COMMON, and we prefer to whine ourselves; BIGGEST_ALIGNMENT is not 839 the one to check. */ 840 /* FIXME: I suspect a bug in gcc with alignment. Do not warn until 841 investigated; it mucks up the testsuite results. */ 842 #define CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, LOCAL) \ 843 do \ 844 { \ 845 int align_ = (ALIGN) / BITS_PER_UNIT; \ 846 if (TARGET_DATA_ALIGN && TARGET_ALIGN_BY_32 && align_ < 4) \ 847 align_ = 4; \ 848 else if (TARGET_DATA_ALIGN && align_ < 2) \ 849 align_ = 2; \ 850 /* FIXME: Do we need this? */ \ 851 else if (align_ < 1) \ 852 align_ = 1; \ 853 \ 854 if (LOCAL) \ 855 { \ 856 fprintf ((FILE), "%s", LOCAL_ASM_OP); \ 857 assemble_name ((FILE), (NAME)); \ 858 fprintf ((FILE), "\n"); \ 859 } \ 860 fprintf ((FILE), "%s", COMMON_ASM_OP); \ 861 assemble_name ((FILE), (NAME)); \ 862 fprintf ((FILE), ",%u,%u\n", (int)(SIZE), align_); \ 863 } \ 864 while (0) 865 866 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 867 CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, 0) 868 869 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 870 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 871 CRIS_ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN, 1) 872 873 /* Node: Label Output */ 874 875 /* Globalizing directive for a label. */ 876 #define GLOBAL_ASM_OP "\t.global " 877 878 #define SUPPORTS_WEAK 1 879 880 #define ASM_OUTPUT_SYMBOL_REF(STREAM, SYM) \ 881 cris_asm_output_symbol_ref (STREAM, SYM) 882 883 #define ASM_OUTPUT_LABEL_REF(STREAM, BUF) \ 884 cris_asm_output_label_ref (STREAM, BUF) 885 886 /* Remove any previous definition (elfos.h). */ 887 #undef ASM_GENERATE_INTERNAL_LABEL 888 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ 889 sprintf (LABEL, "*%s%s%ld", LOCAL_LABEL_PREFIX, PREFIX, (long) NUM) 890 891 /* Node: Initialization */ 892 /* (no definitions) */ 893 894 /* Node: Macros for Initialization */ 895 /* (no definitions) */ 896 897 /* Node: Instruction Output */ 898 899 #define REGISTER_NAMES \ 900 {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \ 901 "r9", "r10", "r11", "r12", "r13", "sp", "acr", "srp", "mof", "faked_ap", "dccr"} 902 903 #define ADDITIONAL_REGISTER_NAMES \ 904 {{"r14", 14}, {"r15", 15}, {"pc", 15}} 905 906 /* Output an empty line to illustrate the presence of the delay slot. */ 907 #define DBR_OUTPUT_SEQEND(FILE) \ 908 fprintf (FILE, "\n") 909 910 #define LOCAL_LABEL_PREFIX "." 911 912 /* cppinit.c initializes a const array from this, so it must be constant, 913 can't have it different based on options. Luckily, the prefix is 914 always allowed, so let's have it on all GCC-generated code. Note that 915 we have this verbatim everywhere in the back-end, not using %R or %s or 916 such. */ 917 #define REGISTER_PREFIX "$" 918 919 /* Remove any previous definition (elfos.h). */ 920 /* We use -fno-leading-underscore to remove it, when necessary. */ 921 #undef USER_LABEL_PREFIX 922 #define USER_LABEL_PREFIX "_" 923 924 #define ASM_OUTPUT_REG_PUSH(FILE, REGNO) \ 925 fprintf (FILE, \ 926 TARGET_V32 \ 927 ? "\tsubq 4,$sp\n\tmove $%s,[$sp]\n" : "\tpush $%s\n", \ 928 reg_names[REGNO]) 929 930 #define ASM_OUTPUT_REG_POP(FILE, REGNO) \ 931 fprintf (FILE, "\tmove [$sp+],$%s\n", reg_names[REGNO]) 932 933 934 /* Node: Dispatch Tables */ 935 936 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ 937 do \ 938 { \ 939 if (TARGET_V32) \ 940 asm_fprintf (FILE, "\t.word %LL%d-.\n", VALUE); \ 941 else \ 942 asm_fprintf (FILE, "\t.word %LL%d-%LL%d\n", VALUE, REL); \ 943 } \ 944 while (0) 945 946 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ 947 asm_fprintf (FILE, "\t.dword %LL%d\n", VALUE) 948 949 /* Defined to also emit an .align in elfos.h. We don't want that. */ 950 #undef ASM_OUTPUT_CASE_LABEL 951 952 /* Since the "bound" insn loads the comparison value if the compared< 953 value (register) is out of bounds (0..comparison value-1), we need 954 to output another case to catch it. 955 The way to find it is to look for the label_ref at the else-arm inside 956 the expanded casesi core-insn. 957 FIXME: Check this construct when changing to new version of gcc. */ 958 #define ASM_OUTPUT_CASE_END(STREAM, NUM, TABLE) \ 959 cris_asm_output_case_end (STREAM, NUM, TABLE) 960 961 962 /* Node: Exception Region Output */ 963 /* (no definitions) */ 964 /* FIXME: Fill in with our own optimized layout. */ 965 966 /* Node: Alignment Output */ 967 968 #define ASM_OUTPUT_ALIGN(FILE, LOG) \ 969 fprintf (FILE, "\t.align %d\n", (LOG)) 970 971 972 /* Node: All Debuggers */ 973 974 #define DBX_REGISTER_NUMBER(REGNO) \ 975 ((REGNO) == CRIS_SRP_REGNUM ? CRIS_CANONICAL_SRP_REGNUM : \ 976 (REGNO) == CRIS_MOF_REGNUM ? CRIS_CANONICAL_MOF_REGNUM : \ 977 (REGNO) == CRIS_CC0_REGNUM ? CRIS_CANONICAL_CC0_REGNUM : \ 978 (REGNO)) 979 980 /* FIXME: Investigate DEBUGGER_AUTO_OFFSET, DEBUGGER_ARG_OFFSET. */ 981 982 983 /* Node: DBX Options */ 984 985 /* Is this correct? Check later. */ 986 #define DBX_NO_XREFS 987 988 #define DBX_CONTIN_LENGTH 0 989 990 /* FIXME: Is this needed when we have 0 DBX_CONTIN_LENGTH? */ 991 #define DBX_CONTIN_CHAR '?' 992 993 994 /* Node: DBX Hooks */ 995 /* (no definitions) */ 996 997 /* Node: File names and DBX */ 998 /* (no definitions) */ 999 1000 1001 /* Node: DWARF */ 1002 /* (no definitions) */ 1003 1004 /* Node: Misc */ 1005 1006 /* A combination of the bound (umin) insn together with a 1007 sign-extended add via the table to PC seems optimal. 1008 If the table overflows, the assembler will take care of it. 1009 Theoretically, in extreme cases (uncertain if they occur), an error 1010 will be emitted, so FIXME: Check how large case-tables are emitted, 1011 possible add an option to emit SImode case-tables. */ 1012 #define CASE_VECTOR_MODE HImode 1013 1014 #define CASE_VECTOR_PC_RELATIVE 1 1015 1016 /* FIXME: Investigate CASE_VECTOR_SHORTEN_MODE to make sure HImode is not 1017 used when broken-.word could possibly fail (plus testcase). */ 1018 1019 /* This is the number of bytes that can be moved in one 1020 reasonably fast instruction sequence. For CRIS, this is two 1021 instructions: mem => reg, reg => mem. */ 1022 #define MOVE_MAX 4 1023 1024 /* Maybe SHIFT_COUNT_TRUNCATED is safe to define? FIXME: Check later. */ 1025 1026 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 32, 1) 1027 #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 32, 1) 1028 1029 #define Pmode SImode 1030 1031 #define FUNCTION_MODE QImode 1032 1033 #define NO_IMPLICIT_EXTERN_C 1034 1035 /* 1036 * Local variables: 1037 * eval: (c-set-style "gnu") 1038 * indent-tabs-mode: t 1039 * End: 1040 */ 1041