1 /* Target macros for the FRV port of GCC. 2 Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 3 Free Software Foundation, Inc. 4 Contributed by Red Hat Inc. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 2, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING. If not, write to the Free 20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 21 02111-1307, USA. */ 22 23 #ifndef __FRV_H__ 24 #define __FRV_H__ 25 26 /* Frv general purpose macros. */ 27 /* Align an address. */ 28 #define ADDR_ALIGN(addr,align) (((addr) + (align) - 1) & ~((align) - 1)) 29 30 /* Return true if a value is inside a range. */ 31 #define IN_RANGE_P(VALUE, LOW, HIGH) \ 32 ( (((HOST_WIDE_INT)(VALUE)) >= (HOST_WIDE_INT)(LOW)) \ 33 && (((HOST_WIDE_INT)(VALUE)) <= ((HOST_WIDE_INT)(HIGH)))) 34 35 36 /* Driver configuration. */ 37 38 /* A C expression which determines whether the option `-CHAR' takes arguments. 39 The value should be the number of arguments that option takes-zero, for many 40 options. 41 42 By default, this macro is defined to handle the standard options properly. 43 You need not define it unless you wish to add additional options which take 44 arguments. 45 46 Defined in svr4.h. */ 47 #undef SWITCH_TAKES_ARG 48 #define SWITCH_TAKES_ARG(CHAR) \ 49 (DEFAULT_SWITCH_TAKES_ARG (CHAR) || (CHAR) == 'G') 50 51 /* A C expression which determines whether the option `-NAME' takes arguments. 52 The value should be the number of arguments that option takes-zero, for many 53 options. This macro rather than `SWITCH_TAKES_ARG' is used for 54 multi-character option names. 55 56 By default, this macro is defined as `DEFAULT_WORD_SWITCH_TAKES_ARG', which 57 handles the standard options properly. You need not define 58 `WORD_SWITCH_TAKES_ARG' unless you wish to add additional options which take 59 arguments. Any redefinition should call `DEFAULT_WORD_SWITCH_TAKES_ARG' and 60 then check for additional options. 61 62 Defined in svr4.h. */ 63 #undef WORD_SWITCH_TAKES_ARG 64 65 /* A C string constant that tells the GCC driver program options to pass to 66 the assembler. It can also specify how to translate options you give to GNU 67 CC into options for GCC to pass to the assembler. See the file `sun3.h' 68 for an example of this. 69 70 Do not define this macro if it does not need to do anything. 71 72 Defined in svr4.h. */ 73 #undef ASM_SPEC 74 #define ASM_SPEC "\ 75 %{G*} %{v} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \ 76 %{mtomcat-stats} \ 77 %{!mno-eflags: \ 78 %{mcpu=*} \ 79 %{mgpr-*} %{mfpr-*} \ 80 %{msoft-float} %{mhard-float} \ 81 %{mdword} %{mno-dword} \ 82 %{mdouble} %{mno-double} \ 83 %{mmedia} %{mno-media} \ 84 %{mmuladd} %{mno-muladd} \ 85 %{mpack} %{mno-pack} \ 86 %{fpic|fpie: -mpic} %{fPIC|fPIE: -mPIC} %{mlibrary-pic}}" 87 88 /* Another C string constant used much like `LINK_SPEC'. The difference 89 between the two is that `STARTFILE_SPEC' is used at the very beginning of 90 the command given to the linker. 91 92 If this macro is not defined, a default is provided that loads the standard 93 C startup file from the usual place. See `gcc.c'. 94 95 Defined in svr4.h. */ 96 #undef STARTFILE_SPEC 97 #define STARTFILE_SPEC "crt0%O%s frvbegin%O%s" 98 99 /* Another C string constant used much like `LINK_SPEC'. The difference 100 between the two is that `ENDFILE_SPEC' is used at the very end of the 101 command given to the linker. 102 103 Do not define this macro if it does not need to do anything. 104 105 Defined in svr4.h. */ 106 #undef ENDFILE_SPEC 107 #define ENDFILE_SPEC "frvend%O%s" 108 109 /* A C string constant that tells the GCC driver program options to pass to 110 CPP. It can also specify how to translate options you give to GCC into 111 options for GCC to pass to the CPP. 112 113 Do not define this macro if it does not need to do anything. */ 114 115 /* The idea here is to use the -mcpu option to define macros based on the 116 processor's features, using the features of the default processor if 117 no -mcpu option is given. These macros can then be overridden by 118 other -m options. */ 119 #define CPP_SPEC "\ 120 %{mcpu=frv: %(cpp_frv)} \ 121 %{mcpu=fr500: %(cpp_fr500)} \ 122 %{mcpu=fr400: %(cpp_fr400)} \ 123 %{mcpu=fr300: %(cpp_simple)} \ 124 %{mcpu=tomcat: %(cpp_fr500)} \ 125 %{mcpu=simple: %(cpp_simple)} \ 126 %{!mcpu*: %(cpp_cpu_default)} \ 127 %{mno-media: -D__FRV_ACC__=0 %{msoft-float: -D__FRV_FPR__=0}} \ 128 %{mhard-float: -D__FRV_HARD_FLOAT__} \ 129 %{msoft-float: -U__FRV_HARD_FLOAT__} \ 130 %{mgpr-32: -U__FRV_GPR__ -D__FRV_GPR__=32} \ 131 %{mgpr-64: -U__FRV_GPR__ -D__FRV_GPR__=64} \ 132 %{mfpr-32: -U__FRV_FPR__ -D__FRV_FPR__=32} \ 133 %{mfpr-64: -U__FRV_FPR__ -D__FRV_FPR__=64} \ 134 %{macc-4: -U__FRV_ACC__ -D__FRV_ACC__=4} \ 135 %{macc-8: -U__FRV_ACC__ -D__FRV_ACC__=8} \ 136 %{mdword: -D__FRV_DWORD__} \ 137 %{mno-dword: -U__FRV_DWORD__} \ 138 %{mno-pack: -U__FRV_VLIW__} \ 139 %{fleading-underscore: -D__FRV_UNDERSCORE__}" 140 141 /* CPU defaults. Each CPU has its own CPP spec that defines the default 142 macros for that CPU. Each CPU also has its own default target mask. 143 144 CPU GPRs FPRs ACCs FPU MulAdd ldd/std Issue rate 145 --- ---- ---- ---- --- ------ ------- ---------- 146 FRV 64 64 8 double yes yes 4 147 FR500 64 64 8 single no yes 4 148 FR400 32 32 4 none no yes 2 149 Simple 32 0 0 none no no 1 */ 150 151 152 #define CPP_FRV_SPEC "\ 153 -D__FRV_GPR__=64 \ 154 -D__FRV_FPR__=64 \ 155 -D__FRV_ACC__=8 \ 156 -D__FRV_HARD_FLOAT__ \ 157 -D__FRV_DWORD__ \ 158 -D__FRV_VLIW__=4" 159 160 #define CPP_FR500_SPEC "\ 161 -D__FRV_GPR__=64 \ 162 -D__FRV_FPR__=64 \ 163 -D__FRV_ACC__=8 \ 164 -D__FRV_HARD_FLOAT__ \ 165 -D__FRV_DWORD__ \ 166 -D__FRV_VLIW__=4" 167 168 #define CPP_FR400_SPEC "\ 169 -D__FRV_GPR__=32 \ 170 -D__FRV_FPR__=32 \ 171 -D__FRV_ACC__=4 \ 172 -D__FRV_DWORD__ \ 173 -D__FRV_VLIW__=2" 174 175 #define CPP_SIMPLE_SPEC "\ 176 -D__FRV_GPR__=32 \ 177 -D__FRV_FPR__=0 \ 178 -D__FRV_ACC__=0 \ 179 %{mmedia: -D__FRV_ACC__=8} \ 180 %{mhard-float|mmedia: -D__FRV_FPR__=64}" 181 182 #define MASK_DEFAULT_FRV \ 183 (MASK_MEDIA \ 184 | MASK_DOUBLE \ 185 | MASK_MULADD \ 186 | MASK_DWORD \ 187 | MASK_PACK) 188 189 #define MASK_DEFAULT_FR500 \ 190 (MASK_MEDIA | MASK_DWORD | MASK_PACK) 191 192 #define MASK_DEFAULT_FR400 \ 193 (MASK_GPR_32 \ 194 | MASK_FPR_32 \ 195 | MASK_MEDIA \ 196 | MASK_ACC_4 \ 197 | MASK_SOFT_FLOAT \ 198 | MASK_DWORD \ 199 | MASK_PACK) 200 201 #define MASK_DEFAULT_SIMPLE \ 202 (MASK_GPR_32 | MASK_SOFT_FLOAT) 203 204 /* A C string constant that tells the GCC driver program options to pass to 205 `cc1'. It can also specify how to translate options you give to GCC into 206 options for GCC to pass to the `cc1'. 207 208 Do not define this macro if it does not need to do anything. */ 209 /* For ABI compliance, we need to put bss data into the normal data section. */ 210 #define CC1_SPEC "%{G*}" 211 212 /* A C string constant that tells the GCC driver program options to pass to 213 the linker. It can also specify how to translate options you give to GCC 214 into options for GCC to pass to the linker. 215 216 Do not define this macro if it does not need to do anything. 217 218 Defined in svr4.h. */ 219 /* Override the svr4.h version with one that dispenses without the svr4 220 shared library options, notably -G. */ 221 #undef LINK_SPEC 222 #define LINK_SPEC "\ 223 %{h*} %{v:-V} \ 224 %{b} %{Wl,*:%*} \ 225 %{static:-dn -Bstatic} \ 226 %{shared:-Bdynamic} \ 227 %{symbolic:-Bsymbolic} \ 228 %{G*} \ 229 %{YP,*} \ 230 %{Qy:} %{!Qn:-Qy}" 231 232 /* Another C string constant used much like `LINK_SPEC'. The difference 233 between the two is that `LIB_SPEC' is used at the end of the command given 234 to the linker. 235 236 If this macro is not defined, a default is provided that loads the standard 237 C library from the usual place. See `gcc.c'. 238 239 Defined in svr4.h. */ 240 241 #undef LIB_SPEC 242 #define LIB_SPEC "--start-group -lc -lsim --end-group" 243 244 /* This macro defines names of additional specifications to put in the specs 245 that can be used in various specifications like CC1_SPEC. Its definition 246 is an initializer with a subgrouping for each command option. 247 248 Each subgrouping contains a string constant, that defines the 249 specification name, and a string constant that used by the GCC driver 250 program. 251 252 Do not define this macro if it does not need to do anything. */ 253 254 #ifndef SUBTARGET_EXTRA_SPECS 255 #define SUBTARGET_EXTRA_SPECS 256 #endif 257 258 #define EXTRA_SPECS \ 259 { "cpp_frv", CPP_FRV_SPEC }, \ 260 { "cpp_fr500", CPP_FR500_SPEC }, \ 261 { "cpp_fr400", CPP_FR400_SPEC }, \ 262 { "cpp_simple", CPP_SIMPLE_SPEC }, \ 263 { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \ 264 SUBTARGET_EXTRA_SPECS 265 266 #ifndef CPP_CPU_DEFAULT_SPEC 267 #define CPP_CPU_DEFAULT_SPEC CPP_FR500_SPEC 268 #define CPU_TYPE FRV_CPU_FR500 269 #endif 270 271 /* Allow us to easily change the default for -malloc-cc. */ 272 #ifndef DEFAULT_NO_ALLOC_CC 273 #define MASK_DEFAULT_ALLOC_CC MASK_ALLOC_CC 274 #else 275 #define MASK_DEFAULT_ALLOC_CC 0 276 #endif 277 278 /* Run-time target specifications */ 279 280 #define TARGET_CPU_CPP_BUILTINS() \ 281 do \ 282 { \ 283 builtin_define ("__frv__"); \ 284 builtin_assert ("machine=frv"); \ 285 } \ 286 while (0) 287 288 289 /* This declaration should be present. */ 290 extern int target_flags; 291 292 /* This series of macros is to allow compiler command arguments to enable or 293 disable the use of optional features of the target machine. For example, 294 one machine description serves both the 68000 and the 68020; a command 295 argument tells the compiler whether it should use 68020-only instructions or 296 not. This command argument works by means of a macro `TARGET_68020' that 297 tests a bit in `target_flags'. 298 299 Define a macro `TARGET_FEATURENAME' for each such option. Its definition 300 should test a bit in `target_flags'; for example: 301 302 #define TARGET_68020 (target_flags & 1) 303 304 One place where these macros are used is in the condition-expressions of 305 instruction patterns. Note how `TARGET_68020' appears frequently in the 306 68000 machine description file, `m68k.md'. Another place they are used is 307 in the definitions of the other macros in the `MACHINE.h' file. */ 308 309 #define MASK_GPR_32 0x00000001 /* Limit gprs to 32 registers */ 310 #define MASK_FPR_32 0x00000002 /* Limit fprs to 32 registers */ 311 #define MASK_SOFT_FLOAT 0x00000004 /* Use software floating point */ 312 #define MASK_ALLOC_CC 0x00000008 /* Dynamically allocate icc/fcc's */ 313 #define MASK_DWORD 0x00000010 /* Change ABi to allow dbl word insns*/ 314 #define MASK_DOUBLE 0x00000020 /* Use double precision instructions */ 315 #define MASK_MEDIA 0x00000040 /* Use media instructions */ 316 #define MASK_MULADD 0x00000080 /* Use multiply add/subtract insns */ 317 #define MASK_LIBPIC 0x00000100 /* -fpic that can be linked w/o pic */ 318 #define MASK_ACC_4 0x00000200 /* Only use four media accumulators */ 319 #define MASK_PACK 0x00000400 /* Set to enable packed output */ 320 321 /* put debug masks up high */ 322 #define MASK_DEBUG_ARG 0x40000000 /* debug argument handling */ 323 #define MASK_DEBUG_ADDR 0x20000000 /* debug go_if_legitimate_address */ 324 #define MASK_DEBUG_STACK 0x10000000 /* debug stack frame */ 325 #define MASK_DEBUG 0x08000000 /* general debugging switch */ 326 #define MASK_DEBUG_LOC 0x04000000 /* optimize line # table */ 327 #define MASK_DEBUG_COND_EXEC 0x02000000 /* debug cond exec code */ 328 #define MASK_NO_COND_MOVE 0x01000000 /* disable conditional moves */ 329 #define MASK_NO_SCC 0x00800000 /* disable set conditional codes */ 330 #define MASK_NO_COND_EXEC 0x00400000 /* disable conditional execution */ 331 #define MASK_NO_VLIW_BRANCH 0x00200000 /* disable repacking branches */ 332 #define MASK_NO_MULTI_CE 0x00100000 /* disable multi-level cond exec */ 333 #define MASK_NO_NESTED_CE 0x00080000 /* disable nested cond exec */ 334 335 #define MASK_DEFAULT MASK_DEFAULT_ALLOC_CC 336 337 #define TARGET_GPR_32 ((target_flags & MASK_GPR_32) != 0) 338 #define TARGET_FPR_32 ((target_flags & MASK_FPR_32) != 0) 339 #define TARGET_SOFT_FLOAT ((target_flags & MASK_SOFT_FLOAT) != 0) 340 #define TARGET_ALLOC_CC ((target_flags & MASK_ALLOC_CC) != 0) 341 #define TARGET_DWORD ((target_flags & MASK_DWORD) != 0) 342 #define TARGET_DOUBLE ((target_flags & MASK_DOUBLE) != 0) 343 #define TARGET_MEDIA ((target_flags & MASK_MEDIA) != 0) 344 #define TARGET_MULADD ((target_flags & MASK_MULADD) != 0) 345 #define TARGET_LIBPIC ((target_flags & MASK_LIBPIC) != 0) 346 #define TARGET_ACC_4 ((target_flags & MASK_ACC_4) != 0) 347 #define TARGET_DEBUG_ARG ((target_flags & MASK_DEBUG_ARG) != 0) 348 #define TARGET_DEBUG_ADDR ((target_flags & MASK_DEBUG_ADDR) != 0) 349 #define TARGET_DEBUG_STACK ((target_flags & MASK_DEBUG_STACK) != 0) 350 #define TARGET_DEBUG ((target_flags & MASK_DEBUG) != 0) 351 #define TARGET_DEBUG_LOC ((target_flags & MASK_DEBUG_LOC) != 0) 352 #define TARGET_DEBUG_COND_EXEC ((target_flags & MASK_DEBUG_COND_EXEC) != 0) 353 #define TARGET_NO_COND_MOVE ((target_flags & MASK_NO_COND_MOVE) != 0) 354 #define TARGET_NO_SCC ((target_flags & MASK_NO_SCC) != 0) 355 #define TARGET_NO_COND_EXEC ((target_flags & MASK_NO_COND_EXEC) != 0) 356 #define TARGET_NO_VLIW_BRANCH ((target_flags & MASK_NO_VLIW_BRANCH) != 0) 357 #define TARGET_NO_MULTI_CE ((target_flags & MASK_NO_MULTI_CE) != 0) 358 #define TARGET_NO_NESTED_CE ((target_flags & MASK_NO_NESTED_CE) != 0) 359 #define TARGET_PACK ((target_flags & MASK_PACK) != 0) 360 361 #define TARGET_GPR_64 (! TARGET_GPR_32) 362 #define TARGET_FPR_64 (! TARGET_FPR_32) 363 #define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT) 364 #define TARGET_FIXED_CC (! TARGET_ALLOC_CC) 365 #define TARGET_COND_MOVE (! TARGET_NO_COND_MOVE) 366 #define TARGET_SCC (! TARGET_NO_SCC) 367 #define TARGET_COND_EXEC (! TARGET_NO_COND_EXEC) 368 #define TARGET_VLIW_BRANCH (! TARGET_NO_VLIW_BRANCH) 369 #define TARGET_MULTI_CE (! TARGET_NO_MULTI_CE) 370 #define TARGET_NESTED_CE (! TARGET_NO_NESTED_CE) 371 #define TARGET_ACC_8 (! TARGET_ACC_4) 372 373 #define TARGET_HAS_FPRS (TARGET_HARD_FLOAT || TARGET_MEDIA) 374 375 #define NUM_GPRS (TARGET_GPR_32? 32 : 64) 376 #define NUM_FPRS (!TARGET_HAS_FPRS? 0 : TARGET_FPR_32? 32 : 64) 377 #define NUM_ACCS (!TARGET_MEDIA? 0 : TARGET_ACC_4? 4 : 8) 378 379 /* Macros to identify the blend of media instructions available. Revision 1 380 is the one found on the FR500. Revision 2 includes the changes made for 381 the FR400. 382 383 Treat the generic processor as a revision 1 machine for now, for 384 compatibility with earlier releases. */ 385 386 #define TARGET_MEDIA_REV1 \ 387 (TARGET_MEDIA \ 388 && (frv_cpu_type == FRV_CPU_GENERIC \ 389 || frv_cpu_type == FRV_CPU_FR500)) 390 391 #define TARGET_MEDIA_REV2 \ 392 (TARGET_MEDIA && frv_cpu_type == FRV_CPU_FR400) 393 394 /* This macro defines names of command options to set and clear bits in 395 `target_flags'. Its definition is an initializer with a subgrouping for 396 each command option. 397 398 Each subgrouping contains a string constant, that defines the option name, 399 a number, which contains the bits to set in `target_flags', and an optional 400 second string which is the textual description that will be displayed when 401 the user passes --help on the command line. If the number entry is negative 402 then the specified bits will be cleared instead of being set. If the second 403 string entry is present but empty, then no help information will be displayed 404 for that option, but it will not count as an undocumented option. The actual 405 option name, asseen on the command line is made by appending `-m' to the 406 specified name. 407 408 One of the subgroupings should have a null string. The number in this 409 grouping is the default value for `target_flags'. Any target options act 410 starting with that value. 411 412 Here is an example which defines `-m68000' and `-m68020' with opposite 413 meanings, and picks the latter as the default: 414 415 #define TARGET_SWITCHES \ 416 { { "68020", 1, ""}, \ 417 { "68000", -1, "Compile for the m68000"}, \ 418 { "", 1, }} 419 420 This declaration must be present. */ 421 422 #define TARGET_SWITCHES \ 423 {{ "gpr-32", MASK_GPR_32, "Only use 32 gprs"}, \ 424 { "gpr-64", -MASK_GPR_32, "Use 64 gprs"}, \ 425 { "fpr-32", MASK_FPR_32, "Only use 32 fprs"}, \ 426 { "fpr-64", -MASK_FPR_32, "Use 64 fprs"}, \ 427 { "hard-float", -MASK_SOFT_FLOAT, "Use hardware floating point" },\ 428 { "soft-float", MASK_SOFT_FLOAT, "Use software floating point" },\ 429 { "alloc-cc", MASK_ALLOC_CC, "Dynamically allocate cc's" }, \ 430 { "fixed-cc", -MASK_ALLOC_CC, "Just use icc0/fcc0" }, \ 431 { "dword", MASK_DWORD, "Change ABI to allow double word insns" }, \ 432 { "no-dword", -MASK_DWORD, "Do not use double word insns" }, \ 433 { "double", MASK_DOUBLE, "Use fp double instructions" }, \ 434 { "no-double", -MASK_DOUBLE, "Do not use fp double insns" }, \ 435 { "media", MASK_MEDIA, "Use media instructions" }, \ 436 { "no-media", -MASK_MEDIA, "Do not use media insns" }, \ 437 { "muladd", MASK_MULADD, "Use multiply add/subtract instructions" }, \ 438 { "no-muladd", -MASK_MULADD, "Do not use multiply add/subtract insns" }, \ 439 { "library-pic", MASK_LIBPIC, "PIC support for building libraries" }, \ 440 { "acc-4", MASK_ACC_4, "Use 4 media accumulators" }, \ 441 { "acc-8", -MASK_ACC_4, "Use 8 media accumulators" }, \ 442 { "pack", MASK_PACK, "Pack VLIW instructions" }, \ 443 { "no-pack", -MASK_PACK, "Do not pack VLIW instructions" }, \ 444 { "no-eflags", 0, "Do not mark ABI switches in e_flags" }, \ 445 { "debug-arg", MASK_DEBUG_ARG, "Internal debug switch" }, \ 446 { "debug-addr", MASK_DEBUG_ADDR, "Internal debug switch" }, \ 447 { "debug-stack", MASK_DEBUG_STACK, "Internal debug switch" }, \ 448 { "debug", MASK_DEBUG, "Internal debug switch" }, \ 449 { "debug-cond-exec", MASK_DEBUG_COND_EXEC, "Internal debug switch" }, \ 450 { "debug-loc", MASK_DEBUG_LOC, "Internal debug switch" }, \ 451 { "cond-move", -MASK_NO_COND_MOVE, "Enable conditional moves" }, \ 452 { "no-cond-move", MASK_NO_COND_MOVE, "Disable conditional moves" }, \ 453 { "scc", -MASK_NO_SCC, "Enable setting gprs to the result of comparisons" }, \ 454 { "no-scc", MASK_NO_SCC, "Disable setting gprs to the result of comparisons" }, \ 455 { "cond-exec", -MASK_NO_COND_EXEC, "Enable conditional execution other than moves/scc" }, \ 456 { "no-cond-exec", MASK_NO_COND_EXEC, "Disable conditional execution other than moves/scc" }, \ 457 { "vliw-branch", -MASK_NO_VLIW_BRANCH, "Run pass to pack branches into VLIW insns" }, \ 458 { "no-vliw-branch", MASK_NO_VLIW_BRANCH, "Do not run pass to pack branches into VLIW insns" }, \ 459 { "multi-cond-exec", -MASK_NO_MULTI_CE, "Disable optimizing &&/|| in conditional execution" }, \ 460 { "no-multi-cond-exec", MASK_NO_MULTI_CE, "Enable optimizing &&/|| in conditional execution" }, \ 461 { "nested-cond-exec", -MASK_NO_NESTED_CE, "Enable nested conditional execution optimizations" }, \ 462 { "no-nested-cond-exec" ,MASK_NO_NESTED_CE, "Disable nested conditional execution optimizations" }, \ 463 { "tomcat-stats", 0, "Cause gas to print tomcat statistics" }, \ 464 { "", MASK_DEFAULT, "" }} \ 465 466 /* This macro is similar to `TARGET_SWITCHES' but defines names of command 467 options that have values. Its definition is an initializer with a 468 subgrouping for each command option. 469 470 Each subgrouping contains a string constant, that defines the fixed part of 471 the option name, the address of a variable, and an optional description string. 472 The variable, of type `char *', is set to the text following the fixed part of 473 the option as it is specified on the command line. The actual option name is 474 made by appending `-m' to the specified name. 475 476 Here is an example which defines `-mshort-data-NUMBER'. If the given option 477 is `-mshort-data-512', the variable `m88k_short_data' will be set to the 478 string `"512"'. 479 480 extern char *m88k_short_data; 481 #define TARGET_OPTIONS \ 482 { { "short-data-", & m88k_short_data, \ 483 "Specify the size of the short data section" } } 484 485 This declaration is optional. */ 486 #define TARGET_OPTIONS \ 487 { \ 488 { "cpu=", &frv_cpu_string, "Set cpu type", 0}, \ 489 { "branch-cost=", &frv_branch_cost_string, "Internal debug switch", 0}, \ 490 { "cond-exec-insns=", &frv_condexec_insns_str, "Internal debug switch", 0}, \ 491 { "cond-exec-temps=", &frv_condexec_temps_str, "Internal debug switch", 0}, \ 492 { "sched-lookahead=", &frv_sched_lookahead_str,"Internal debug switch", 0}, \ 493 } 494 495 /* This macro is a C statement to print on `stderr' a string describing the 496 particular machine description choice. Every machine description should 497 define `TARGET_VERSION'. For example: 498 499 #ifdef MOTOROLA 500 #define TARGET_VERSION \ 501 fprintf (stderr, " (68k, Motorola syntax)"); 502 #else 503 #define TARGET_VERSION \ 504 fprintf (stderr, " (68k, MIT syntax)"); 505 #endif */ 506 #define TARGET_VERSION fprintf (stderr, _(" (frv)")) 507 508 /* Sometimes certain combinations of command options do not make sense on a 509 particular target machine. You can define a macro `OVERRIDE_OPTIONS' to 510 take account of this. This macro, if defined, is executed once just after 511 all the command options have been parsed. 512 513 Don't use this macro to turn on various extra optimizations for `-O'. That 514 is what `OPTIMIZATION_OPTIONS' is for. */ 515 516 #define OVERRIDE_OPTIONS frv_override_options () 517 518 /* Some machines may desire to change what optimizations are performed for 519 various optimization levels. This macro, if defined, is executed once just 520 after the optimization level is determined and before the remainder of the 521 command options have been parsed. Values set in this macro are used as the 522 default values for the other command line options. 523 524 LEVEL is the optimization level specified; 2 if `-O2' is specified, 1 if 525 `-O' is specified, and 0 if neither is specified. 526 527 SIZE is nonzero if `-Os' is specified, 0 otherwise. 528 529 You should not use this macro to change options that are not 530 machine-specific. These should uniformly selected by the same optimization 531 level on all supported machines. Use this macro to enable machbine-specific 532 optimizations. 533 534 *Do not examine `write_symbols' in this macro!* The debugging options are 535 *not supposed to alter the generated code. */ 536 #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) frv_optimization_options (LEVEL, SIZE) 537 538 539 /* Define this macro if debugging can be performed even without a frame 540 pointer. If this macro is defined, GCC will turn on the 541 `-fomit-frame-pointer' option whenever `-O' is specified. */ 542 /* Frv needs a specific frame layout that includes the frame pointer. */ 543 544 #define CAN_DEBUG_WITHOUT_FP 545 546 547 /* Small Data Area Support. */ 548 /* Maximum size of variables that go in .sdata/.sbss. 549 The -msdata=foo switch also controls how small variables are handled. */ 550 #ifndef SDATA_DEFAULT_SIZE 551 #define SDATA_DEFAULT_SIZE 8 552 #endif 553 554 555 /* Storage Layout */ 556 557 /* Define this macro to have the value 1 if the most significant bit in a byte 558 has the lowest number; otherwise define it to have the value zero. This 559 means that bit-field instructions count from the most significant bit. If 560 the machine has no bit-field instructions, then this must still be defined, 561 but it doesn't matter which value it is defined to. This macro need not be 562 a constant. 563 564 This macro does not affect the way structure fields are packed into bytes or 565 words; that is controlled by `BYTES_BIG_ENDIAN'. */ 566 #define BITS_BIG_ENDIAN 1 567 568 /* Define this macro to have the value 1 if the most significant byte in a word 569 has the lowest number. This macro need not be a constant. */ 570 #define BYTES_BIG_ENDIAN 1 571 572 /* Define this macro to have the value 1 if, in a multiword object, the most 573 significant word has the lowest number. This applies to both memory 574 locations and registers; GCC fundamentally assumes that the order of 575 words in memory is the same as the order in registers. This macro need not 576 be a constant. */ 577 #define WORDS_BIG_ENDIAN 1 578 579 /* Number of storage units in a word; normally 4. */ 580 #define UNITS_PER_WORD 4 581 582 /* A macro to update MODE and UNSIGNEDP when an object whose type is TYPE and 583 which has the specified mode and signedness is to be stored in a register. 584 This macro is only called when TYPE is a scalar type. 585 586 On most RISC machines, which only have operations that operate on a full 587 register, define this macro to set M to `word_mode' if M is an integer mode 588 narrower than `BITS_PER_WORD'. In most cases, only integer modes should be 589 widened because wider-precision floating-point operations are usually more 590 expensive than their narrower counterparts. 591 592 For most machines, the macro definition does not change UNSIGNEDP. However, 593 some machines, have instructions that preferentially handle either signed or 594 unsigned quantities of certain modes. For example, on the DEC Alpha, 32-bit 595 loads from memory and 32-bit add instructions sign-extend the result to 64 596 bits. On such machines, set UNSIGNEDP according to which kind of extension 597 is more efficient. 598 599 Do not define this macro if it would never modify MODE. */ 600 #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ 601 do \ 602 { \ 603 if (GET_MODE_CLASS (MODE) == MODE_INT \ 604 && GET_MODE_SIZE (MODE) < 4) \ 605 (MODE) = SImode; \ 606 } \ 607 while (0) 608 609 /* Normal alignment required for function parameters on the stack, in bits. 610 All stack parameters receive at least this much alignment regardless of data 611 type. On most machines, this is the same as the size of an integer. */ 612 #define PARM_BOUNDARY 32 613 614 /* Define this macro if you wish to preserve a certain alignment for the stack 615 pointer. The definition is a C expression for the desired alignment 616 (measured in bits). 617 618 If `PUSH_ROUNDING' is not defined, the stack will always be aligned to the 619 specified boundary. If `PUSH_ROUNDING' is defined and specifies a less 620 strict alignment than `STACK_BOUNDARY', the stack may be momentarily 621 unaligned while pushing arguments. */ 622 #define STACK_BOUNDARY 64 623 624 /* Alignment required for a function entry point, in bits. */ 625 #define FUNCTION_BOUNDARY 128 626 627 /* Biggest alignment that any data type can require on this machine, 628 in bits. */ 629 #define BIGGEST_ALIGNMENT 64 630 631 /* @@@ A hack, needed because libobjc wants to use ADJUST_FIELD_ALIGN for 632 some reason. */ 633 #ifdef IN_TARGET_LIBS 634 #define BIGGEST_FIELD_ALIGNMENT 64 635 #else 636 /* An expression for the alignment of a structure field FIELD if the 637 alignment computed in the usual way is COMPUTED. GCC uses this 638 value instead of the value in `BIGGEST_ALIGNMENT' or 639 `BIGGEST_FIELD_ALIGNMENT', if defined, for structure fields only. */ 640 #define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \ 641 frv_adjust_field_align (FIELD, COMPUTED) 642 #endif 643 644 /* If defined, a C expression to compute the alignment for a static variable. 645 TYPE is the data type, and ALIGN is the alignment that the object 646 would ordinarily have. The value of this macro is used instead of that 647 alignment to align the object. 648 649 If this macro is not defined, then ALIGN is used. 650 651 One use of this macro is to increase alignment of medium-size data to make 652 it all fit in fewer cache lines. Another is to cause character arrays to be 653 word-aligned so that `strcpy' calls that copy constants to character arrays 654 can be done inline. */ 655 #define DATA_ALIGNMENT(TYPE, ALIGN) \ 656 (TREE_CODE (TYPE) == ARRAY_TYPE \ 657 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ 658 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 659 660 /* If defined, a C expression to compute the alignment given to a constant that 661 is being placed in memory. CONSTANT is the constant and ALIGN is the 662 alignment that the object would ordinarily have. The value of this macro is 663 used instead of that alignment to align the object. 664 665 If this macro is not defined, then ALIGN is used. 666 667 The typical use of this macro is to increase alignment for string constants 668 to be word aligned so that `strcpy' calls that copy constants can be done 669 inline. */ 670 #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ 671 (TREE_CODE (EXP) == STRING_CST \ 672 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 673 674 /* Define this macro to be the value 1 if instructions will fail to work if 675 given data not on the nominal alignment. If instructions will merely go 676 slower in that case, define this macro as 0. */ 677 #define STRICT_ALIGNMENT 1 678 679 /* Define this if you wish to imitate the way many other C compilers handle 680 alignment of bitfields and the structures that contain them. 681 682 The behavior is that the type written for a bit-field (`int', `short', or 683 other integer type) imposes an alignment for the entire structure, as if the 684 structure really did contain an ordinary field of that type. In addition, 685 the bit-field is placed within the structure so that it would fit within such 686 a field, not crossing a boundary for it. 687 688 Thus, on most machines, a bit-field whose type is written as `int' would not 689 cross a four-byte boundary, and would force four-byte alignment for the 690 whole structure. (The alignment used may not be four bytes; it is 691 controlled by the other alignment parameters.) 692 693 If the macro is defined, its definition should be a C expression; a nonzero 694 value for the expression enables this behavior. 695 696 Note that if this macro is not defined, or its value is zero, some bitfields 697 may cross more than one alignment boundary. The compiler can support such 698 references if there are `insv', `extv', and `extzv' insns that can directly 699 reference memory. 700 701 The other known way of making bitfields work is to define 702 `STRUCTURE_SIZE_BOUNDARY' as large as `BIGGEST_ALIGNMENT'. Then every 703 structure can be accessed with fullwords. 704 705 Unless the machine has bit-field instructions or you define 706 `STRUCTURE_SIZE_BOUNDARY' that way, you must define 707 `PCC_BITFIELD_TYPE_MATTERS' to have a nonzero value. 708 709 If your aim is to make GCC use the same conventions for laying out 710 bitfields as are used by another compiler, here is how to investigate what 711 the other compiler does. Compile and run this program: 712 713 struct foo1 714 { 715 char x; 716 char :0; 717 char y; 718 }; 719 720 struct foo2 721 { 722 char x; 723 int :0; 724 char y; 725 }; 726 727 main () 728 { 729 printf ("Size of foo1 is %d\n", 730 sizeof (struct foo1)); 731 printf ("Size of foo2 is %d\n", 732 sizeof (struct foo2)); 733 exit (0); 734 } 735 736 If this prints 2 and 5, then the compiler's behavior is what you would get 737 from `PCC_BITFIELD_TYPE_MATTERS'. 738 739 Defined in svr4.h. */ 740 #define PCC_BITFIELD_TYPE_MATTERS 1 741 742 743 /* Layout of Source Language Data Types. */ 744 745 #define CHAR_TYPE_SIZE 8 746 #define SHORT_TYPE_SIZE 16 747 #define INT_TYPE_SIZE 32 748 #define LONG_TYPE_SIZE 32 749 #define LONG_LONG_TYPE_SIZE 64 750 #define FLOAT_TYPE_SIZE 32 751 #define DOUBLE_TYPE_SIZE 64 752 #define LONG_DOUBLE_TYPE_SIZE 64 753 754 /* An expression whose value is 1 or 0, according to whether the type `char' 755 should be signed or unsigned by default. The user can always override this 756 default with the options `-fsigned-char' and `-funsigned-char'. */ 757 #define DEFAULT_SIGNED_CHAR 1 758 759 760 /* General purpose registers. */ 761 #define GPR_FIRST 0 /* First gpr */ 762 #define GPR_LAST (GPR_FIRST + 63) /* Last gpr */ 763 #define GPR_R0 GPR_FIRST /* R0, constant 0 */ 764 #define GPR_FP (GPR_FIRST + 2) /* Frame pointer */ 765 #define GPR_SP (GPR_FIRST + 1) /* Stack pointer */ 766 /* small data register */ 767 #define SDA_BASE_REG ((unsigned)(flag_pic ? PIC_REGNO : (GPR_FIRST+16))) 768 #define PIC_REGNO (GPR_FIRST + 17) /* PIC register */ 769 770 #define FPR_FIRST 64 /* First FP reg */ 771 #define FPR_LAST 127 /* Last FP reg */ 772 773 #define DEFAULT_CONDEXEC_TEMPS 4 /* reserve 4 regs by default */ 774 #define GPR_TEMP_NUM frv_condexec_temps /* # gprs to reserve for temps */ 775 776 /* We reserve the last CR and CCR in each category to be used as a reload 777 register to reload the CR/CCR registers. This is a kludge. */ 778 #define CC_FIRST 128 /* First ICC/FCC reg */ 779 #define CC_LAST 135 /* Last ICC/FCC reg */ 780 #define ICC_FIRST (CC_FIRST + 4) /* First ICC reg */ 781 #define ICC_LAST (CC_FIRST + 7) /* Last ICC reg */ 782 #define ICC_TEMP (CC_FIRST + 7) /* Temporary ICC reg */ 783 #define FCC_FIRST (CC_FIRST) /* First FCC reg */ 784 #define FCC_LAST (CC_FIRST + 3) /* Last FCC reg */ 785 786 /* Amount to shift a value to locate a ICC or FCC register in the CCR 787 register and shift it to the bottom 4 bits. */ 788 #define CC_SHIFT_RIGHT(REGNO) (((REGNO) - CC_FIRST) << 2) 789 790 /* Mask to isolate a single ICC/FCC value. */ 791 #define CC_MASK 0xf 792 793 /* Masks to isolate the various bits in an ICC field. */ 794 #define ICC_MASK_N 0x8 /* negative */ 795 #define ICC_MASK_Z 0x4 /* zero */ 796 #define ICC_MASK_V 0x2 /* overflow */ 797 #define ICC_MASK_C 0x1 /* carry */ 798 799 /* Mask to isolate the N/Z flags in an ICC. */ 800 #define ICC_MASK_NZ (ICC_MASK_N | ICC_MASK_Z) 801 802 /* Mask to isolate the Z/C flags in an ICC. */ 803 #define ICC_MASK_ZC (ICC_MASK_Z | ICC_MASK_C) 804 805 /* Masks to isolate the various bits in a FCC field. */ 806 #define FCC_MASK_E 0x8 /* equal */ 807 #define FCC_MASK_L 0x4 /* less than */ 808 #define FCC_MASK_G 0x2 /* greater than */ 809 #define FCC_MASK_U 0x1 /* unordered */ 810 811 /* For CCR registers, the machine wants CR4..CR7 to be used for integer 812 code and CR0..CR3 to be used for floating point. */ 813 #define CR_FIRST 136 /* First CCR */ 814 #define CR_LAST 143 /* Last CCR */ 815 #define CR_NUM (CR_LAST-CR_FIRST+1) /* # of CCRs (8) */ 816 #define ICR_FIRST (CR_FIRST + 4) /* First integer CCR */ 817 #define ICR_LAST (CR_FIRST + 7) /* Last integer CCR */ 818 #define ICR_TEMP ICR_LAST /* Temp integer CCR */ 819 #define FCR_FIRST (CR_FIRST + 0) /* First float CCR */ 820 #define FCR_LAST (CR_FIRST + 3) /* Last float CCR */ 821 822 /* Amount to shift a value to locate a CR register in the CCCR special purpose 823 register and shift it to the bottom 2 bits. */ 824 #define CR_SHIFT_RIGHT(REGNO) (((REGNO) - CR_FIRST) << 1) 825 826 /* Mask to isolate a single CR value. */ 827 #define CR_MASK 0x3 828 829 #define ACC_FIRST 144 /* First acc register */ 830 #define ACC_LAST 151 /* Last acc register */ 831 832 #define ACCG_FIRST 152 /* First accg register */ 833 #define ACCG_LAST 159 /* Last accg register */ 834 835 #define AP_FIRST 160 /* fake argument pointer */ 836 837 #define SPR_FIRST 161 838 #define SPR_LAST 162 839 #define LR_REGNO (SPR_FIRST) 840 #define LCR_REGNO (SPR_FIRST + 1) 841 842 #define GPR_P(R) IN_RANGE_P (R, GPR_FIRST, GPR_LAST) 843 #define GPR_OR_AP_P(R) (GPR_P (R) || (R) == ARG_POINTER_REGNUM) 844 #define FPR_P(R) IN_RANGE_P (R, FPR_FIRST, FPR_LAST) 845 #define CC_P(R) IN_RANGE_P (R, CC_FIRST, CC_LAST) 846 #define ICC_P(R) IN_RANGE_P (R, ICC_FIRST, ICC_LAST) 847 #define FCC_P(R) IN_RANGE_P (R, FCC_FIRST, FCC_LAST) 848 #define CR_P(R) IN_RANGE_P (R, CR_FIRST, CR_LAST) 849 #define ICR_P(R) IN_RANGE_P (R, ICR_FIRST, ICR_LAST) 850 #define FCR_P(R) IN_RANGE_P (R, FCR_FIRST, FCR_LAST) 851 #define ACC_P(R) IN_RANGE_P (R, ACC_FIRST, ACC_LAST) 852 #define ACCG_P(R) IN_RANGE_P (R, ACCG_FIRST, ACCG_LAST) 853 #define SPR_P(R) IN_RANGE_P (R, SPR_FIRST, SPR_LAST) 854 855 #define GPR_OR_PSEUDO_P(R) (GPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 856 #define FPR_OR_PSEUDO_P(R) (FPR_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 857 #define GPR_AP_OR_PSEUDO_P(R) (GPR_OR_AP_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 858 #define CC_OR_PSEUDO_P(R) (CC_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 859 #define ICC_OR_PSEUDO_P(R) (ICC_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 860 #define FCC_OR_PSEUDO_P(R) (FCC_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 861 #define CR_OR_PSEUDO_P(R) (CR_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 862 #define ICR_OR_PSEUDO_P(R) (ICR_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 863 #define FCR_OR_PSEUDO_P(R) (FCR_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 864 #define ACC_OR_PSEUDO_P(R) (ACC_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 865 #define ACCG_OR_PSEUDO_P(R) (ACCG_P (R) || (R) >= FIRST_PSEUDO_REGISTER) 866 867 #define MAX_STACK_IMMEDIATE_OFFSET 2047 868 869 870 /* Register Basics. */ 871 872 /* Number of hardware registers known to the compiler. They receive numbers 0 873 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number 874 really is assigned the number `FIRST_PSEUDO_REGISTER'. */ 875 #define FIRST_PSEUDO_REGISTER (SPR_LAST + 1) 876 877 /* The first/last register that can contain the arguments to a function. */ 878 #define FIRST_ARG_REGNUM (GPR_FIRST + 8) 879 #define LAST_ARG_REGNUM (FIRST_ARG_REGNUM + FRV_NUM_ARG_REGS - 1) 880 881 /* Registers used by the exception handling functions. These should be 882 registers that are not otherwised used by the calling sequence. */ 883 #define FIRST_EH_REGNUM 14 884 #define LAST_EH_REGNUM 15 885 886 /* Scratch registers used in the prologue, epilogue and thunks. 887 OFFSET_REGNO is for loading constant addends that are too big for a 888 single instruction. TEMP_REGNO is used for transferring SPRs to and from 889 the stack, and various other activities. */ 890 #define OFFSET_REGNO 4 891 #define TEMP_REGNO 5 892 893 /* Registers used in the prologue. OLD_SP_REGNO is the old stack pointer, 894 which is sometimes used to set up the frame pointer. */ 895 #define OLD_SP_REGNO 6 896 897 /* Registers used in the epilogue. STACKADJ_REGNO stores the exception 898 handler's stack adjustment. */ 899 #define STACKADJ_REGNO 6 900 901 /* Registers used in thunks. JMP_REGNO is used for loading the target 902 address. */ 903 #define JUMP_REGNO 6 904 905 #define EH_RETURN_DATA_REGNO(N) ((N) <= (LAST_EH_REGNUM - FIRST_EH_REGNUM)? \ 906 (N) + FIRST_EH_REGNUM : INVALID_REGNUM) 907 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, STACKADJ_REGNO) 908 #define EH_RETURN_HANDLER_RTX RETURN_ADDR_RTX (0, frame_pointer_rtx) 909 910 /* An initializer that says which registers are used for fixed purposes all 911 throughout the compiled code and are therefore not available for general 912 allocation. These would include the stack pointer, the frame pointer 913 (except on machines where that can be used as a general register when no 914 frame pointer is needed), the program counter on machines where that is 915 considered one of the addressable registers, and any other numbered register 916 with a standard use. 917 918 This information is expressed as a sequence of numbers, separated by commas 919 and surrounded by braces. The Nth number is 1 if register N is fixed, 0 920 otherwise. 921 922 The table initialized from this macro, and the table initialized by the 923 following one, may be overridden at run time either automatically, by the 924 actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the 925 command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */ 926 927 /* gr0 -- Hard Zero 928 gr1 -- Stack Pointer 929 gr2 -- Frame Pointer 930 gr3 -- Hidden Parameter 931 gr16 -- Small Data reserved 932 gr17 -- Pic reserved 933 gr28 -- OS reserved 934 gr29 -- OS reserved 935 gr30 -- OS reserved 936 gr31 -- OS reserved 937 cr3 -- reserved to reload FCC registers. 938 cr7 -- reserved to reload ICC registers. */ 939 #define FIXED_REGISTERS \ 940 { /* Integer Registers */ \ 941 1, 1, 1, 1, 0, 0, 0, 0, /* 000-007, gr0 - gr7 */ \ 942 0, 0, 0, 0, 0, 0, 0, 0, /* 008-015, gr8 - gr15 */ \ 943 1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \ 944 0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \ 945 0, 0, 0, 0, 0, 0, 0, 0, /* 032-039, gr32 - gr39 */ \ 946 0, 0, 0, 0, 0, 0, 0, 0, /* 040-040, gr48 - gr47 */ \ 947 0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \ 948 0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \ 949 /* Float Registers */ \ 950 0, 0, 0, 0, 0, 0, 0, 0, /* 064-071, fr0 - fr7 */ \ 951 0, 0, 0, 0, 0, 0, 0, 0, /* 072-079, fr8 - fr15 */ \ 952 0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \ 953 0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \ 954 0, 0, 0, 0, 0, 0, 0, 0, /* 096-103, fr32 - fr39 */ \ 955 0, 0, 0, 0, 0, 0, 0, 0, /* 104-111, fr48 - fr47 */ \ 956 0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \ 957 0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \ 958 /* Condition Code Registers */ \ 959 0, 0, 0, 0, /* 128-131, fcc0 - fcc3 */ \ 960 0, 0, 0, 1, /* 132-135, icc0 - icc3 */ \ 961 /* Conditional execution Registers (CCR) */ \ 962 0, 0, 0, 0, 0, 0, 0, 1, /* 136-143, cr0 - cr7 */ \ 963 /* Accumulators */ \ 964 1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \ 965 1, 1, 1, 1, 1, 1, 1, 1, /* 152-159, accg0 - accg7 */ \ 966 /* Other registers */ \ 967 1, /* 160, AP - fake arg ptr */ \ 968 0, /* 161, LR - Link register*/ \ 969 0, /* 162, LCR - Loop count reg*/ \ 970 } 971 972 /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in 973 general) by function calls as well as for fixed registers. This macro 974 therefore identifies the registers that are not available for general 975 allocation of values that must live across function calls. 976 977 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically 978 saves it on function entry and restores it on function exit, if the register 979 is used within the function. */ 980 #define CALL_USED_REGISTERS \ 981 { /* Integer Registers */ \ 982 1, 1, 1, 1, 1, 1, 1, 1, /* 000-007, gr0 - gr7 */ \ 983 1, 1, 1, 1, 1, 1, 1, 1, /* 008-015, gr8 - gr15 */ \ 984 1, 1, 0, 0, 0, 0, 0, 0, /* 016-023, gr16 - gr23 */ \ 985 0, 0, 0, 0, 1, 1, 1, 1, /* 024-031, gr24 - gr31 */ \ 986 1, 1, 1, 1, 1, 1, 1, 1, /* 032-039, gr32 - gr39 */ \ 987 1, 1, 1, 1, 1, 1, 1, 1, /* 040-040, gr48 - gr47 */ \ 988 0, 0, 0, 0, 0, 0, 0, 0, /* 048-055, gr48 - gr55 */ \ 989 0, 0, 0, 0, 0, 0, 0, 0, /* 056-063, gr56 - gr63 */ \ 990 /* Float Registers */ \ 991 1, 1, 1, 1, 1, 1, 1, 1, /* 064-071, fr0 - fr7 */ \ 992 1, 1, 1, 1, 1, 1, 1, 1, /* 072-079, fr8 - fr15 */ \ 993 0, 0, 0, 0, 0, 0, 0, 0, /* 080-087, fr16 - fr23 */ \ 994 0, 0, 0, 0, 0, 0, 0, 0, /* 088-095, fr24 - fr31 */ \ 995 1, 1, 1, 1, 1, 1, 1, 1, /* 096-103, fr32 - fr39 */ \ 996 1, 1, 1, 1, 1, 1, 1, 1, /* 104-111, fr48 - fr47 */ \ 997 0, 0, 0, 0, 0, 0, 0, 0, /* 112-119, fr48 - fr55 */ \ 998 0, 0, 0, 0, 0, 0, 0, 0, /* 120-127, fr56 - fr63 */ \ 999 /* Condition Code Registers */ \ 1000 1, 1, 1, 1, /* 128-131, fcc0 - fcc3 */ \ 1001 1, 1, 1, 1, /* 132-135, icc0 - icc3 */ \ 1002 /* Conditional execution Registers (CCR) */ \ 1003 1, 1, 1, 1, 1, 1, 1, 1, /* 136-143, cr0 - cr7 */ \ 1004 /* Accumulators */ \ 1005 1, 1, 1, 1, 1, 1, 1, 1, /* 144-151, acc0 - acc7 */ \ 1006 1, 1, 1, 1, 1, 1, 1, 1, /* 152-159, accg0 - accg7 */ \ 1007 /* Other registers */ \ 1008 1, /* 160, AP - fake arg ptr */ \ 1009 1, /* 161, LR - Link register*/ \ 1010 1, /* 162, LCR - Loop count reg */ \ 1011 } 1012 1013 /* Zero or more C statements that may conditionally modify two variables 1014 `fixed_regs' and `call_used_regs' (both of type `char []') after they have 1015 been initialized from the two preceding macros. 1016 1017 This is necessary in case the fixed or call-clobbered registers depend on 1018 target flags. 1019 1020 You need not define this macro if it has no work to do. 1021 1022 If the usage of an entire class of registers depends on the target flags, 1023 you may indicate this to GCC by using this macro to modify `fixed_regs' and 1024 `call_used_regs' to 1 for each of the registers in the classes which should 1025 not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return 1026 `NO_REGS' if it is called with a letter for a class that shouldn't be used. 1027 1028 (However, if this class is not included in `GENERAL_REGS' and all of the 1029 insn patterns whose constraints permit this class are controlled by target 1030 switches, then GCC will automatically avoid using these registers when the 1031 target switches are opposed to them.) */ 1032 1033 #define CONDITIONAL_REGISTER_USAGE frv_conditional_register_usage () 1034 1035 1036 /* Order of allocation of registers. */ 1037 1038 /* If defined, an initializer for a vector of integers, containing the numbers 1039 of hard registers in the order in which GCC should prefer to use them 1040 (from most preferred to least). 1041 1042 If this macro is not defined, registers are used lowest numbered first (all 1043 else being equal). 1044 1045 One use of this macro is on machines where the highest numbered registers 1046 must always be saved and the save-multiple-registers instruction supports 1047 only sequences of consecutive registers. On such machines, define 1048 `REG_ALLOC_ORDER' to be an initializer that lists the highest numbered 1049 allocatable register first. */ 1050 1051 /* On the FRV, allocate GR16 and GR17 after other saved registers so that we 1052 have a better chance of allocating 2 registers at a time and can use the 1053 double word load/store instructions in the prologue. */ 1054 #define REG_ALLOC_ORDER \ 1055 { \ 1056 /* volatile registers */ \ 1057 GPR_FIRST + 4, GPR_FIRST + 5, GPR_FIRST + 6, GPR_FIRST + 7, \ 1058 GPR_FIRST + 8, GPR_FIRST + 9, GPR_FIRST + 10, GPR_FIRST + 11, \ 1059 GPR_FIRST + 12, GPR_FIRST + 13, GPR_FIRST + 14, GPR_FIRST + 15, \ 1060 GPR_FIRST + 32, GPR_FIRST + 33, GPR_FIRST + 34, GPR_FIRST + 35, \ 1061 GPR_FIRST + 36, GPR_FIRST + 37, GPR_FIRST + 38, GPR_FIRST + 39, \ 1062 GPR_FIRST + 40, GPR_FIRST + 41, GPR_FIRST + 42, GPR_FIRST + 43, \ 1063 GPR_FIRST + 44, GPR_FIRST + 45, GPR_FIRST + 46, GPR_FIRST + 47, \ 1064 \ 1065 FPR_FIRST + 0, FPR_FIRST + 1, FPR_FIRST + 2, FPR_FIRST + 3, \ 1066 FPR_FIRST + 4, FPR_FIRST + 5, FPR_FIRST + 6, FPR_FIRST + 7, \ 1067 FPR_FIRST + 8, FPR_FIRST + 9, FPR_FIRST + 10, FPR_FIRST + 11, \ 1068 FPR_FIRST + 12, FPR_FIRST + 13, FPR_FIRST + 14, FPR_FIRST + 15, \ 1069 FPR_FIRST + 32, FPR_FIRST + 33, FPR_FIRST + 34, FPR_FIRST + 35, \ 1070 FPR_FIRST + 36, FPR_FIRST + 37, FPR_FIRST + 38, FPR_FIRST + 39, \ 1071 FPR_FIRST + 40, FPR_FIRST + 41, FPR_FIRST + 42, FPR_FIRST + 43, \ 1072 FPR_FIRST + 44, FPR_FIRST + 45, FPR_FIRST + 46, FPR_FIRST + 47, \ 1073 \ 1074 ICC_FIRST + 0, ICC_FIRST + 1, ICC_FIRST + 2, ICC_FIRST + 3, \ 1075 FCC_FIRST + 0, FCC_FIRST + 1, FCC_FIRST + 2, FCC_FIRST + 3, \ 1076 CR_FIRST + 0, CR_FIRST + 1, CR_FIRST + 2, CR_FIRST + 3, \ 1077 CR_FIRST + 4, CR_FIRST + 5, CR_FIRST + 6, CR_FIRST + 7, \ 1078 \ 1079 /* saved registers */ \ 1080 GPR_FIRST + 18, GPR_FIRST + 19, \ 1081 GPR_FIRST + 20, GPR_FIRST + 21, GPR_FIRST + 22, GPR_FIRST + 23, \ 1082 GPR_FIRST + 24, GPR_FIRST + 25, GPR_FIRST + 26, GPR_FIRST + 27, \ 1083 GPR_FIRST + 48, GPR_FIRST + 49, GPR_FIRST + 50, GPR_FIRST + 51, \ 1084 GPR_FIRST + 52, GPR_FIRST + 53, GPR_FIRST + 54, GPR_FIRST + 55, \ 1085 GPR_FIRST + 56, GPR_FIRST + 57, GPR_FIRST + 58, GPR_FIRST + 59, \ 1086 GPR_FIRST + 60, GPR_FIRST + 61, GPR_FIRST + 62, GPR_FIRST + 63, \ 1087 GPR_FIRST + 16, GPR_FIRST + 17, \ 1088 \ 1089 FPR_FIRST + 16, FPR_FIRST + 17, FPR_FIRST + 18, FPR_FIRST + 19, \ 1090 FPR_FIRST + 20, FPR_FIRST + 21, FPR_FIRST + 22, FPR_FIRST + 23, \ 1091 FPR_FIRST + 24, FPR_FIRST + 25, FPR_FIRST + 26, FPR_FIRST + 27, \ 1092 FPR_FIRST + 28, FPR_FIRST + 29, FPR_FIRST + 30, FPR_FIRST + 31, \ 1093 FPR_FIRST + 48, FPR_FIRST + 49, FPR_FIRST + 50, FPR_FIRST + 51, \ 1094 FPR_FIRST + 52, FPR_FIRST + 53, FPR_FIRST + 54, FPR_FIRST + 55, \ 1095 FPR_FIRST + 56, FPR_FIRST + 57, FPR_FIRST + 58, FPR_FIRST + 59, \ 1096 FPR_FIRST + 60, FPR_FIRST + 61, FPR_FIRST + 62, FPR_FIRST + 63, \ 1097 \ 1098 /* special or fixed registers */ \ 1099 GPR_FIRST + 0, GPR_FIRST + 1, GPR_FIRST + 2, GPR_FIRST + 3, \ 1100 GPR_FIRST + 28, GPR_FIRST + 29, GPR_FIRST + 30, GPR_FIRST + 31, \ 1101 ACC_FIRST + 0, ACC_FIRST + 1, ACC_FIRST + 2, ACC_FIRST + 3, \ 1102 ACC_FIRST + 4, ACC_FIRST + 5, ACC_FIRST + 6, ACC_FIRST + 7, \ 1103 ACCG_FIRST + 0, ACCG_FIRST + 1, ACCG_FIRST + 2, ACCG_FIRST + 3, \ 1104 ACCG_FIRST + 4, ACCG_FIRST + 5, ACCG_FIRST + 6, ACCG_FIRST + 7, \ 1105 AP_FIRST, LR_REGNO, LCR_REGNO \ 1106 } 1107 1108 1109 /* How Values Fit in Registers. */ 1110 1111 /* A C expression for the number of consecutive hard registers, starting at 1112 register number REGNO, required to hold a value of mode MODE. 1113 1114 On a machine where all registers are exactly one word, a suitable definition 1115 of this macro is 1116 1117 #define HARD_REGNO_NREGS(REGNO, MODE) \ 1118 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \ 1119 / UNITS_PER_WORD)) */ 1120 1121 /* On the FRV, make the CC modes take 3 words in the integer registers, so that 1122 we can build the appropriate instructions to properly reload the values. */ 1123 #define HARD_REGNO_NREGS(REGNO, MODE) frv_hard_regno_nregs (REGNO, MODE) 1124 1125 /* A C expression that is nonzero if it is permissible to store a value of mode 1126 MODE in hard register number REGNO (or in several registers starting with 1127 that one). For a machine where all registers are equivalent, a suitable 1128 definition is 1129 1130 #define HARD_REGNO_MODE_OK(REGNO, MODE) 1 1131 1132 It is not necessary for this macro to check for the numbers of fixed 1133 registers, because the allocation mechanism considers them to be always 1134 occupied. 1135 1136 On some machines, double-precision values must be kept in even/odd register 1137 pairs. The way to implement that is to define this macro to reject odd 1138 register numbers for such modes. 1139 1140 The minimum requirement for a mode to be OK in a register is that the 1141 `movMODE' instruction pattern support moves between the register and any 1142 other hard register for which the mode is OK; and that moving a value into 1143 the register and back out not alter it. 1144 1145 Since the same instruction used to move `SImode' will work for all narrower 1146 integer modes, it is not necessary on any machine for `HARD_REGNO_MODE_OK' 1147 to distinguish between these modes, provided you define patterns `movhi', 1148 etc., to take advantage of this. This is useful because of the interaction 1149 between `HARD_REGNO_MODE_OK' and `MODES_TIEABLE_P'; it is very desirable for 1150 all integer modes to be tieable. 1151 1152 Many machines have special registers for floating point arithmetic. Often 1153 people assume that floating point machine modes are allowed only in floating 1154 point registers. This is not true. Any registers that can hold integers 1155 can safely *hold* a floating point machine mode, whether or not floating 1156 arithmetic can be done on it in those registers. Integer move instructions 1157 can be used to move the values. 1158 1159 On some machines, though, the converse is true: fixed-point machine modes 1160 may not go in floating registers. This is true if the floating registers 1161 normalize any value stored in them, because storing a non-floating value 1162 there would garble it. In this case, `HARD_REGNO_MODE_OK' should reject 1163 fixed-point machine modes in floating registers. But if the floating 1164 registers do not automatically normalize, if you can store any bit pattern 1165 in one and retrieve it unchanged without a trap, then any machine mode may 1166 go in a floating register, so you can define this macro to say so. 1167 1168 The primary significance of special floating registers is rather that they 1169 are the registers acceptable in floating point arithmetic instructions. 1170 However, this is of no concern to `HARD_REGNO_MODE_OK'. You handle it by 1171 writing the proper constraints for those instructions. 1172 1173 On some machines, the floating registers are especially slow to access, so 1174 that it is better to store a value in a stack frame than in such a register 1175 if floating point arithmetic is not being done. As long as the floating 1176 registers are not in class `GENERAL_REGS', they will not be used unless some 1177 pattern's constraint asks for one. */ 1178 #define HARD_REGNO_MODE_OK(REGNO, MODE) frv_hard_regno_mode_ok (REGNO, MODE) 1179 1180 /* A C expression that is nonzero if it is desirable to choose register 1181 allocation so as to avoid move instructions between a value of mode MODE1 1182 and a value of mode MODE2. 1183 1184 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are 1185 ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be 1186 zero. */ 1187 #define MODES_TIEABLE_P(MODE1, MODE2) (MODE1 == MODE2) 1188 1189 /* Define this macro if the compiler should avoid copies to/from CCmode 1190 registers. You should only define this macro if support fo copying to/from 1191 CCmode is incomplete. */ 1192 #define AVOID_CCMODE_COPIES 1193 1194 1195 /* Register Classes. */ 1196 1197 /* An enumeral type that must be defined with all the register class names as 1198 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last 1199 register class, followed by one more enumeral value, `LIM_REG_CLASSES', 1200 which is not a register class but rather tells how many classes there are. 1201 1202 Each register class has a number, which is the value of casting the class 1203 name to type `int'. The number serves as an index in many of the tables 1204 described below. */ 1205 enum reg_class 1206 { 1207 NO_REGS, 1208 ICC_REGS, 1209 FCC_REGS, 1210 CC_REGS, 1211 ICR_REGS, 1212 FCR_REGS, 1213 CR_REGS, 1214 LCR_REG, 1215 LR_REG, 1216 SPR_REGS, 1217 QUAD_ACC_REGS, 1218 EVEN_ACC_REGS, 1219 ACC_REGS, 1220 ACCG_REGS, 1221 QUAD_FPR_REGS, 1222 FEVEN_REGS, 1223 FPR_REGS, 1224 QUAD_REGS, 1225 EVEN_REGS, 1226 GPR_REGS, 1227 ALL_REGS, 1228 LIM_REG_CLASSES 1229 }; 1230 1231 #define GENERAL_REGS GPR_REGS 1232 1233 /* The number of distinct register classes, defined as follows: 1234 1235 #define N_REG_CLASSES (int) LIM_REG_CLASSES */ 1236 #define N_REG_CLASSES ((int) LIM_REG_CLASSES) 1237 1238 /* An initializer containing the names of the register classes as C string 1239 constants. These names are used in writing some of the debugging dumps. */ 1240 #define REG_CLASS_NAMES { \ 1241 "NO_REGS", \ 1242 "ICC_REGS", \ 1243 "FCC_REGS", \ 1244 "CC_REGS", \ 1245 "ICR_REGS", \ 1246 "FCR_REGS", \ 1247 "CR_REGS", \ 1248 "LCR_REG", \ 1249 "LR_REG", \ 1250 "SPR_REGS", \ 1251 "QUAD_ACC_REGS", \ 1252 "EVEN_ACC_REGS", \ 1253 "ACC_REGS", \ 1254 "ACCG_REGS", \ 1255 "QUAD_FPR_REGS", \ 1256 "FEVEN_REGS", \ 1257 "FPR_REGS", \ 1258 "QUAD_REGS", \ 1259 "EVEN_REGS", \ 1260 "GPR_REGS", \ 1261 "ALL_REGS" \ 1262 } 1263 1264 /* An initializer containing the contents of the register classes, as integers 1265 which are bit masks. The Nth integer specifies the contents of class N. 1266 The way the integer MASK is interpreted is that register R is in the class 1267 if `MASK & (1 << R)' is 1. 1268 1269 When the machine has more than 32 registers, an integer does not suffice. 1270 Then the integers are replaced by sub-initializers, braced groupings 1271 containing several integers. Each sub-initializer must be suitable as an 1272 initializer for the type `HARD_REG_SET' which is defined in 1273 `hard-reg-set.h'. */ 1274 #define REG_CLASS_CONTENTS \ 1275 { /* gr0-gr31 gr32-gr63 fr0-fr31 fr32-fr-63 cc/ccr/acc ap/spr */ \ 1276 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x0}, /* NO_REGS */\ 1277 { 0x00000000,0x00000000,0x00000000,0x00000000,0x000000f0,0x0}, /* ICC_REGS */\ 1278 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000000f,0x0}, /* FCC_REGS */\ 1279 { 0x00000000,0x00000000,0x00000000,0x00000000,0x000000ff,0x0}, /* CC_REGS */\ 1280 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000f000,0x0}, /* ICR_REGS */\ 1281 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000f00,0x0}, /* FCR_REGS */\ 1282 { 0x00000000,0x00000000,0x00000000,0x00000000,0x0000ff00,0x0}, /* CR_REGS */\ 1283 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x4}, /* LCR_REGS */\ 1284 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x2}, /* LR_REGS */\ 1285 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00000000,0x6}, /* SPR_REGS */\ 1286 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* QUAD_ACC */\ 1287 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* EVEN_ACC */\ 1288 { 0x00000000,0x00000000,0x00000000,0x00000000,0x00ff0000,0x0}, /* ACC_REGS */\ 1289 { 0x00000000,0x00000000,0x00000000,0x00000000,0xff000000,0x0}, /* ACCG_REGS*/\ 1290 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* QUAD_FPR */\ 1291 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FEVEN_REG*/\ 1292 { 0x00000000,0x00000000,0xffffffff,0xffffffff,0x00000000,0x0}, /* FPR_REGS */\ 1293 { 0x0ffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* QUAD_REGS*/\ 1294 { 0xfffffffc,0xffffffff,0x00000000,0x00000000,0x00000000,0x0}, /* EVEN_REGS*/\ 1295 { 0xffffffff,0xffffffff,0x00000000,0x00000000,0x00000000,0x1}, /* GPR_REGS */\ 1296 { 0xffffffff,0xffffffff,0xffffffff,0xffffffff,0xffffffff,0x7}, /* ALL_REGS */\ 1297 } 1298 1299 /* A C expression whose value is a register class containing hard register 1300 REGNO. In general there is more than one such class; choose a class which 1301 is "minimal", meaning that no smaller class also contains the register. */ 1302 1303 extern enum reg_class regno_reg_class[]; 1304 #define REGNO_REG_CLASS(REGNO) regno_reg_class [REGNO] 1305 1306 /* A macro whose definition is the name of the class to which a valid base 1307 register must belong. A base register is one used in an address which is 1308 the register value plus a displacement. */ 1309 #define BASE_REG_CLASS GPR_REGS 1310 1311 /* A macro whose definition is the name of the class to which a valid index 1312 register must belong. An index register is one used in an address where its 1313 value is either multiplied by a scale factor or added to another register 1314 (as well as added to a displacement). */ 1315 #define INDEX_REG_CLASS GPR_REGS 1316 1317 /* A C expression which defines the machine-dependent operand constraint 1318 letters for register classes. If CHAR is such a letter, the value should be 1319 the register class corresponding to it. Otherwise, the value should be 1320 `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS', 1321 will not be passed to this macro; you do not need to handle it. 1322 1323 The following letters are unavailable, due to being used as 1324 constraints: 1325 '0'..'9' 1326 '<', '>' 1327 'E', 'F', 'G', 'H' 1328 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P' 1329 'Q', 'R', 'S', 'T', 'U' 1330 'V', 'X' 1331 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */ 1332 1333 extern enum reg_class reg_class_from_letter[]; 1334 #define REG_CLASS_FROM_LETTER(CHAR) reg_class_from_letter [(unsigned char)(CHAR)] 1335 1336 /* A C expression which is nonzero if register number NUM is suitable for use 1337 as a base register in operand addresses. It may be either a suitable hard 1338 register or a pseudo register that has been allocated such a hard register. */ 1339 #define REGNO_OK_FOR_BASE_P(NUM) \ 1340 ((NUM) < FIRST_PSEUDO_REGISTER \ 1341 ? GPR_P (NUM) \ 1342 : (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM]))) 1343 1344 /* A C expression which is nonzero if register number NUM is suitable for use 1345 as an index register in operand addresses. It may be either a suitable hard 1346 register or a pseudo register that has been allocated such a hard register. 1347 1348 The difference between an index register and a base register is that the 1349 index register may be scaled. If an address involves the sum of two 1350 registers, neither one of them scaled, then either one may be labeled the 1351 "base" and the other the "index"; but whichever labeling is used must fit 1352 the machine's constraints of which registers may serve in each capacity. 1353 The compiler will try both labelings, looking for one that is valid, and 1354 will reload one or both registers only if neither labeling works. */ 1355 #define REGNO_OK_FOR_INDEX_P(NUM) \ 1356 ((NUM) < FIRST_PSEUDO_REGISTER \ 1357 ? GPR_P (NUM) \ 1358 : (reg_renumber [NUM] >= 0 && GPR_P (reg_renumber [NUM]))) 1359 1360 /* A C expression that places additional restrictions on the register class to 1361 use when it is necessary to copy value X into a register in class CLASS. 1362 The value is a register class; perhaps CLASS, or perhaps another, smaller 1363 class. On many machines, the following definition is safe: 1364 1365 #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS 1366 1367 Sometimes returning a more restrictive class makes better code. For 1368 example, on the 68000, when X is an integer constant that is in range for a 1369 `moveq' instruction, the value of this macro is always `DATA_REGS' as long 1370 as CLASS includes the data registers. Requiring a data register guarantees 1371 that a `moveq' will be used. 1372 1373 If X is a `const_double', by returning `NO_REGS' you can force X into a 1374 memory constant. This is useful on certain machines where immediate 1375 floating values cannot be loaded into certain kinds of registers. 1376 1377 This declaration must be present. */ 1378 #define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS 1379 1380 #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) \ 1381 frv_secondary_reload_class (CLASS, MODE, X, TRUE) 1382 1383 #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) \ 1384 frv_secondary_reload_class (CLASS, MODE, X, FALSE) 1385 1386 /* A C expression whose value is nonzero if pseudos that have been assigned to 1387 registers of class CLASS would likely be spilled because registers of CLASS 1388 are needed for spill registers. 1389 1390 The default value of this macro returns 1 if CLASS has exactly one register 1391 and zero otherwise. On most machines, this default should be used. Only 1392 define this macro to some other expression if pseudo allocated by 1393 `local-alloc.c' end up in memory because their hard registers were needed 1394 for spill registers. If this macro returns nonzero for those classes, those 1395 pseudos will only be allocated by `global.c', which knows how to reallocate 1396 the pseudo to another register. If there would not be another register 1397 available for reallocation, you should not change the definition of this 1398 macro since the only effect of such a definition would be to slow down 1399 register allocation. */ 1400 #define CLASS_LIKELY_SPILLED_P(CLASS) frv_class_likely_spilled_p (CLASS) 1401 1402 /* A C expression for the maximum number of consecutive registers of 1403 class CLASS needed to hold a value of mode MODE. 1404 1405 This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value 1406 of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of 1407 `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS. 1408 1409 This macro helps control the handling of multiple-word values in 1410 the reload pass. 1411 1412 This declaration is required. */ 1413 #define CLASS_MAX_NREGS(CLASS, MODE) frv_class_max_nregs (CLASS, MODE) 1414 1415 #define ZERO_P(x) (x == CONST0_RTX (GET_MODE (x))) 1416 1417 /* 6 bit signed immediate. */ 1418 #define CONST_OK_FOR_I(VALUE) IN_RANGE_P(VALUE, -32, 31) 1419 /* 10 bit signed immediate. */ 1420 #define CONST_OK_FOR_J(VALUE) IN_RANGE_P(VALUE, -512, 511) 1421 /* Unused */ 1422 #define CONST_OK_FOR_K(VALUE) 0 1423 /* 16 bit signed immediate. */ 1424 #define CONST_OK_FOR_L(VALUE) IN_RANGE_P(VALUE, -32768, 32767) 1425 /* 16 bit unsigned immediate. */ 1426 #define CONST_OK_FOR_M(VALUE) IN_RANGE_P (VALUE, 0, 65535) 1427 /* 12 bit signed immediate that is negative. */ 1428 #define CONST_OK_FOR_N(VALUE) IN_RANGE_P(VALUE, -2048, -1) 1429 /* Zero */ 1430 #define CONST_OK_FOR_O(VALUE) ((VALUE) == 0) 1431 /* 12 bit signed immediate that is negative. */ 1432 #define CONST_OK_FOR_P(VALUE) IN_RANGE_P(VALUE, 1, 2047) 1433 1434 /* A C expression that defines the machine-dependent operand constraint letters 1435 (`I', `J', `K', .. 'P') that specify particular ranges of integer values. 1436 If C is one of those letters, the expression should check that VALUE, an 1437 integer, is in the appropriate range and return 1 if so, 0 otherwise. If C 1438 is not one of those letters, the value should be 0 regardless of VALUE. */ 1439 #define CONST_OK_FOR_LETTER_P(VALUE, C) \ 1440 ( (C) == 'I' ? CONST_OK_FOR_I (VALUE) \ 1441 : (C) == 'J' ? CONST_OK_FOR_J (VALUE) \ 1442 : (C) == 'K' ? CONST_OK_FOR_K (VALUE) \ 1443 : (C) == 'L' ? CONST_OK_FOR_L (VALUE) \ 1444 : (C) == 'M' ? CONST_OK_FOR_M (VALUE) \ 1445 : (C) == 'N' ? CONST_OK_FOR_N (VALUE) \ 1446 : (C) == 'O' ? CONST_OK_FOR_O (VALUE) \ 1447 : (C) == 'P' ? CONST_OK_FOR_P (VALUE) \ 1448 : 0) 1449 1450 1451 /* A C expression that defines the machine-dependent operand constraint letters 1452 (`G', `H') that specify particular ranges of `const_double' values. 1453 1454 If C is one of those letters, the expression should check that VALUE, an RTX 1455 of code `const_double', is in the appropriate range and return 1 if so, 0 1456 otherwise. If C is not one of those letters, the value should be 0 1457 regardless of VALUE. 1458 1459 `const_double' is used for all floating-point constants and for `DImode' 1460 fixed-point constants. A given letter can accept either or both kinds of 1461 values. It can use `GET_MODE' to distinguish between these kinds. */ 1462 1463 #define CONST_DOUBLE_OK_FOR_G(VALUE) \ 1464 ((GET_MODE (VALUE) == VOIDmode \ 1465 && CONST_DOUBLE_LOW (VALUE) == 0 \ 1466 && CONST_DOUBLE_HIGH (VALUE) == 0) \ 1467 || ((GET_MODE (VALUE) == SFmode \ 1468 || GET_MODE (VALUE) == DFmode) \ 1469 && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))) 1470 1471 #define CONST_DOUBLE_OK_FOR_H(VALUE) 0 1472 1473 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ 1474 ( (C) == 'G' ? CONST_DOUBLE_OK_FOR_G (VALUE) \ 1475 : (C) == 'H' ? CONST_DOUBLE_OK_FOR_H (VALUE) \ 1476 : 0) 1477 1478 /* A C expression that defines the optional machine-dependent constraint 1479 letters (`Q', `R', `S', `T', `U') that can be used to segregate specific 1480 types of operands, usually memory references, for the target machine. 1481 Normally this macro will not be defined. If it is required for a particular 1482 target machine, it should return 1 if VALUE corresponds to the operand type 1483 represented by the constraint letter C. If C is not defined as an extra 1484 constraint, the value returned should be 0 regardless of VALUE. 1485 1486 For example, on the ROMP, load instructions cannot have their output in r0 1487 if the memory reference contains a symbolic address. Constraint letter `Q' 1488 is defined as representing a memory address that does *not* contain a 1489 symbolic address. An alternative is specified with a `Q' constraint on the 1490 input and `r' on the output. The next alternative specifies `m' on the 1491 input and a register class that does not include r0 on the output. */ 1492 1493 /* Small data references */ 1494 #define EXTRA_CONSTRAINT_FOR_Q(VALUE) \ 1495 (small_data_symbolic_operand (VALUE, GET_MODE (VALUE))) 1496 1497 /* Double word memory ops that take one instruction. */ 1498 #define EXTRA_CONSTRAINT_FOR_R(VALUE) \ 1499 (dbl_memory_one_insn_operand (VALUE, GET_MODE (VALUE))) 1500 1501 /* SYMBOL_REF */ 1502 #define EXTRA_CONSTRAINT_FOR_S(VALUE) (GET_CODE (VALUE) == SYMBOL_REF) 1503 1504 /* Double word memory ops that take two instructions. */ 1505 #define EXTRA_CONSTRAINT_FOR_T(VALUE) \ 1506 (dbl_memory_two_insn_operand (VALUE, GET_MODE (VALUE))) 1507 1508 /* Memory operand for conditional execution. */ 1509 #define EXTRA_CONSTRAINT_FOR_U(VALUE) \ 1510 (condexec_memory_operand (VALUE, GET_MODE (VALUE))) 1511 1512 #define EXTRA_CONSTRAINT(VALUE, C) \ 1513 ( (C) == 'Q' ? EXTRA_CONSTRAINT_FOR_Q (VALUE) \ 1514 : (C) == 'R' ? EXTRA_CONSTRAINT_FOR_R (VALUE) \ 1515 : (C) == 'S' ? EXTRA_CONSTRAINT_FOR_S (VALUE) \ 1516 : (C) == 'T' ? EXTRA_CONSTRAINT_FOR_T (VALUE) \ 1517 : (C) == 'U' ? EXTRA_CONSTRAINT_FOR_U (VALUE) \ 1518 : 0) 1519 1520 1521 /* Basic Stack Layout. */ 1522 1523 /* Structure to describe information about a saved range of registers */ 1524 1525 typedef struct frv_stack_regs { 1526 const char * name; /* name of the register ranges */ 1527 int first; /* first register in the range */ 1528 int last; /* last register in the range */ 1529 int size_1word; /* # of bytes to be stored via 1 word stores */ 1530 int size_2words; /* # of bytes to be stored via 2 word stores */ 1531 unsigned char field_p; /* true if the registers are a single SPR */ 1532 unsigned char dword_p; /* true if we can do dword stores */ 1533 unsigned char special_p; /* true if the regs have a fixed save loc. */ 1534 } frv_stack_regs_t; 1535 1536 /* Register ranges to look into saving. */ 1537 #define STACK_REGS_GPR 0 /* Gprs (normally gr16..gr31, gr48..gr63) */ 1538 #define STACK_REGS_FPR 1 /* Fprs (normally fr16..fr31, fr48..fr63) */ 1539 #define STACK_REGS_LR 2 /* LR register */ 1540 #define STACK_REGS_CC 3 /* CCrs (normally not saved) */ 1541 #define STACK_REGS_LCR 5 /* lcr register */ 1542 #define STACK_REGS_STDARG 6 /* stdarg registers */ 1543 #define STACK_REGS_STRUCT 7 /* structure return (gr3) */ 1544 #define STACK_REGS_FP 8 /* FP register */ 1545 #define STACK_REGS_MAX 9 /* # of register ranges */ 1546 1547 /* Values for save_p field. */ 1548 #define REG_SAVE_NO_SAVE 0 /* register not saved */ 1549 #define REG_SAVE_1WORD 1 /* save the register */ 1550 #define REG_SAVE_2WORDS 2 /* save register and register+1 */ 1551 1552 /* Structure used to define the frv stack. */ 1553 1554 typedef struct frv_stack { 1555 int total_size; /* total bytes allocated for stack */ 1556 int vars_size; /* variable save area size */ 1557 int parameter_size; /* outgoing parameter size */ 1558 int stdarg_size; /* size of regs needed to be saved for stdarg */ 1559 int regs_size; /* size of the saved registers */ 1560 int regs_size_1word; /* # of bytes to be stored via 1 word stores */ 1561 int regs_size_2words; /* # of bytes to be stored via 2 word stores */ 1562 int header_size; /* size of the old FP, struct ret., LR save */ 1563 int pretend_size; /* size of pretend args */ 1564 int vars_offset; /* offset to save local variables from new SP*/ 1565 int regs_offset; /* offset to save registers from new SP */ 1566 /* register range information */ 1567 frv_stack_regs_t regs[STACK_REGS_MAX]; 1568 /* offset to store each register */ 1569 int reg_offset[FIRST_PSEUDO_REGISTER]; 1570 /* whether to save register (& reg+1) */ 1571 unsigned char save_p[FIRST_PSEUDO_REGISTER]; 1572 } frv_stack_t; 1573 1574 /* Define this macro if pushing a word onto the stack moves the stack pointer 1575 to a smaller address. */ 1576 #define STACK_GROWS_DOWNWARD 1 1577 1578 /* Define this macro if the addresses of local variable slots are at negative 1579 offsets from the frame pointer. */ 1580 #define FRAME_GROWS_DOWNWARD 1581 1582 /* Offset from the frame pointer to the first local variable slot to be 1583 allocated. 1584 1585 If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the 1586 first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by 1587 adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */ 1588 #define STARTING_FRAME_OFFSET 0 1589 1590 /* Offset from the stack pointer register to the first location at which 1591 outgoing arguments are placed. If not specified, the default value of zero 1592 is used. This is the proper value for most machines. 1593 1594 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 1595 location at which outgoing arguments are placed. */ 1596 #define STACK_POINTER_OFFSET 0 1597 1598 /* Offset from the argument pointer register to the first argument's address. 1599 On some machines it may depend on the data type of the function. 1600 1601 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 1602 argument's address. */ 1603 #define FIRST_PARM_OFFSET(FUNDECL) 0 1604 1605 /* A C expression whose value is RTL representing the address in a stack frame 1606 where the pointer to the caller's frame is stored. Assume that FRAMEADDR is 1607 an RTL expression for the address of the stack frame itself. 1608 1609 If you don't define this macro, the default is to return the value of 1610 FRAMEADDR--that is, the stack frame address is also the address of the stack 1611 word that points to the previous frame. */ 1612 #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) frv_dynamic_chain_address (FRAMEADDR) 1613 1614 /* A C expression whose value is RTL representing the value of the return 1615 address for the frame COUNT steps up from the current frame, after the 1616 prologue. FRAMEADDR is the frame pointer of the COUNT frame, or the frame 1617 pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' is 1618 defined. 1619 1620 The value of the expression must always be the correct address when COUNT is 1621 zero, but may be `NULL_RTX' if there is not way to determine the return 1622 address of other frames. */ 1623 #define RETURN_ADDR_RTX(COUNT, FRAMEADDR) frv_return_addr_rtx (COUNT, FRAMEADDR) 1624 1625 /* This function contains machine specific function data. */ 1626 struct machine_function GTY(()) 1627 { 1628 /* True if we have created an rtx that relies on the stack frame. */ 1629 int frame_needed; 1630 }; 1631 1632 #define RETURN_POINTER_REGNUM LR_REGNO 1633 1634 /* A C expression whose value is RTL representing the location of the incoming 1635 return address at the beginning of any function, before the prologue. This 1636 RTL is either a `REG', indicating that the return value is saved in `REG', 1637 or a `MEM' representing a location in the stack. 1638 1639 You only need to define this macro if you want to support call frame 1640 debugging information like that provided by DWARF 2. */ 1641 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM) 1642 1643 1644 /* Register That Address the Stack Frame. */ 1645 1646 /* The register number of the stack pointer register, which must also be a 1647 fixed register according to `FIXED_REGISTERS'. On most machines, the 1648 hardware determines which register this is. */ 1649 #define STACK_POINTER_REGNUM (GPR_FIRST + 1) 1650 1651 /* The register number of the frame pointer register, which is used to access 1652 automatic variables in the stack frame. On some machines, the hardware 1653 determines which register this is. On other machines, you can choose any 1654 register you wish for this purpose. */ 1655 #define FRAME_POINTER_REGNUM (GPR_FIRST + 2) 1656 1657 /* The register number of the arg pointer register, which is used to access the 1658 function's argument list. On some machines, this is the same as the frame 1659 pointer register. On some machines, the hardware determines which register 1660 this is. On other machines, you can choose any register you wish for this 1661 purpose. If this is not the same register as the frame pointer register, 1662 then you must mark it as a fixed register according to `FIXED_REGISTERS', or 1663 arrange to be able to eliminate it. */ 1664 1665 /* On frv this is a fake register that is eliminated in 1666 terms of either the frame pointer or stack pointer. */ 1667 #define ARG_POINTER_REGNUM AP_FIRST 1668 1669 /* Register numbers used for passing a function's static chain pointer. If 1670 register windows are used, the register number as seen by the called 1671 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as 1672 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers 1673 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. 1674 1675 The static chain register need not be a fixed register. 1676 1677 If the static chain is passed in memory, these macros should not be defined; 1678 instead, the next two macros should be defined. */ 1679 #define STATIC_CHAIN_REGNUM (GPR_FIRST + 7) 1680 #define STATIC_CHAIN_INCOMING_REGNUM (GPR_FIRST + 7) 1681 1682 1683 /* Eliminating the Frame Pointer and the Arg Pointer. */ 1684 1685 /* A C expression which is nonzero if a function must have and use a frame 1686 pointer. This expression is evaluated in the reload pass. If its value is 1687 nonzero the function will have a frame pointer. 1688 1689 The expression can in principle examine the current function and decide 1690 according to the facts, but on most machines the constant 0 or the constant 1691 1 suffices. Use 0 when the machine allows code to be generated with no 1692 frame pointer, and doing so saves some time or space. Use 1 when there is 1693 no possible advantage to avoiding a frame pointer. 1694 1695 In certain cases, the compiler does not know how to produce valid code 1696 without a frame pointer. The compiler recognizes those cases and 1697 automatically gives the function a frame pointer regardless of what 1698 `FRAME_POINTER_REQUIRED' says. You don't need to worry about them. 1699 1700 In a function that does not require a frame pointer, the frame pointer 1701 register can be allocated for ordinary usage, unless you mark it as a fixed 1702 register. See `FIXED_REGISTERS' for more information. */ 1703 #define FRAME_POINTER_REQUIRED frv_frame_pointer_required () 1704 1705 /* If defined, this macro specifies a table of register pairs used to eliminate 1706 unneeded registers that point into the stack frame. If it is not defined, 1707 the only elimination attempted by the compiler is to replace references to 1708 the frame pointer with references to the stack pointer. 1709 1710 The definition of this macro is a list of structure initializations, each of 1711 which specifies an original and replacement register. 1712 1713 On some machines, the position of the argument pointer is not known until 1714 the compilation is completed. In such a case, a separate hard register must 1715 be used for the argument pointer. This register can be eliminated by 1716 replacing it with either the frame pointer or the argument pointer, 1717 depending on whether or not the frame pointer has been eliminated. 1718 1719 In this case, you might specify: 1720 #define ELIMINABLE_REGS \ 1721 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 1722 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 1723 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} 1724 1725 Note that the elimination of the argument pointer with the stack pointer is 1726 specified first since that is the preferred elimination. */ 1727 1728 #define ELIMINABLE_REGS \ 1729 { \ 1730 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 1731 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 1732 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ 1733 } 1734 1735 /* A C expression that returns nonzero if the compiler is allowed to try to 1736 replace register number FROM with register number TO. This macro need only 1737 be defined if `ELIMINABLE_REGS' is defined, and will usually be the constant 1738 1, since most of the cases preventing register elimination are things that 1739 the compiler already knows about. */ 1740 1741 #define CAN_ELIMINATE(FROM, TO) \ 1742 ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \ 1743 ? ! frame_pointer_needed \ 1744 : 1) 1745 1746 /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the 1747 initial difference between the specified pair of registers. This macro must 1748 be defined if `ELIMINABLE_REGS' is defined. */ 1749 1750 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 1751 (OFFSET) = frv_initial_elimination_offset (FROM, TO) 1752 1753 1754 /* Passing Function Arguments on the Stack. */ 1755 1756 /* If defined, the maximum amount of space required for outgoing arguments will 1757 be computed and placed into the variable 1758 `current_function_outgoing_args_size'. No space will be pushed onto the 1759 stack for each call; instead, the function prologue should increase the 1760 stack frame size by this amount. 1761 1762 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not 1763 proper. */ 1764 #define ACCUMULATE_OUTGOING_ARGS 1 1765 1766 /* A C expression that should indicate the number of bytes of its own arguments 1767 that a function pops on returning, or 0 if the function pops no arguments 1768 and the caller must therefore pop them all after the function returns. 1769 1770 FUNDECL is a C variable whose value is a tree node that describes the 1771 function in question. Normally it is a node of type `FUNCTION_DECL' that 1772 describes the declaration of the function. From this it is possible to 1773 obtain the DECL_ATTRIBUTES of the function. 1774 1775 FUNTYPE is a C variable whose value is a tree node that describes the 1776 function in question. Normally it is a node of type `FUNCTION_TYPE' that 1777 describes the data type of the function. From this it is possible to obtain 1778 the data types of the value and arguments (if known). 1779 1780 When a call to a library function is being considered, FUNTYPE will contain 1781 an identifier node for the library function. Thus, if you need to 1782 distinguish among various library functions, you can do so by their names. 1783 Note that "library function" in this context means a function used to 1784 perform arithmetic, whose name is known specially in the compiler and was 1785 not mentioned in the C code being compiled. 1786 1787 STACK-SIZE is the number of bytes of arguments passed on the stack. If a 1788 variable number of bytes is passed, it is zero, and argument popping will 1789 always be the responsibility of the calling function. 1790 1791 On the VAX, all functions always pop their arguments, so the definition of 1792 this macro is STACK-SIZE. On the 68000, using the standard calling 1793 convention, no functions pop their arguments, so the value of the macro is 1794 always 0 in this case. But an alternative calling convention is available 1795 in which functions that take a fixed number of arguments pop them but other 1796 functions (such as `printf') pop nothing (the caller pops all). When this 1797 convention is in use, FUNTYPE is examined to determine whether a function 1798 takes a fixed number of arguments. */ 1799 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0 1800 1801 1802 /* Function Arguments in Registers. */ 1803 1804 /* Nonzero if we do not know how to pass TYPE solely in registers. 1805 We cannot do so in the following cases: 1806 1807 - if the type has variable size 1808 - if the type is marked as addressable (it is required to be constructed 1809 into the stack) 1810 - if the type is a structure or union. */ 1811 1812 #define MUST_PASS_IN_STACK(MODE,TYPE) \ 1813 (((MODE) == BLKmode) \ 1814 || ((TYPE) != 0 \ 1815 && (TREE_CODE (TYPE_SIZE (TYPE)) != INTEGER_CST \ 1816 || TREE_CODE (TYPE) == RECORD_TYPE \ 1817 || TREE_CODE (TYPE) == UNION_TYPE \ 1818 || TREE_CODE (TYPE) == QUAL_UNION_TYPE \ 1819 || TREE_ADDRESSABLE (TYPE)))) 1820 1821 /* The number of register assigned to holding function arguments. */ 1822 1823 #define FRV_NUM_ARG_REGS 6 1824 1825 /* A C expression that controls whether a function argument is passed in a 1826 register, and which register. 1827 1828 The arguments are CUM, of type CUMULATIVE_ARGS, which summarizes (in a way 1829 defined by INIT_CUMULATIVE_ARGS and FUNCTION_ARG_ADVANCE) all of the previous 1830 arguments so far passed in registers; MODE, the machine mode of the argument; 1831 TYPE, the data type of the argument as a tree node or 0 if that is not known 1832 (which happens for C support library functions); and NAMED, which is 1 for an 1833 ordinary argument and 0 for nameless arguments that correspond to `...' in the 1834 called function's prototype. 1835 1836 The value of the expression should either be a `reg' RTX for the hard 1837 register in which to pass the argument, or zero to pass the argument on the 1838 stack. 1839 1840 For machines like the VAX and 68000, where normally all arguments are 1841 pushed, zero suffices as a definition. 1842 1843 The usual way to make the ANSI library `stdarg.h' work on a machine where 1844 some arguments are usually passed in registers, is to cause nameless 1845 arguments to be passed on the stack instead. This is done by making 1846 `FUNCTION_ARG' return 0 whenever NAMED is 0. 1847 1848 You may use the macro `MUST_PASS_IN_STACK (MODE, TYPE)' in the definition of 1849 this macro to determine if this argument is of a type that must be passed in 1850 the stack. If `REG_PARM_STACK_SPACE' is not defined and `FUNCTION_ARG' 1851 returns nonzero for such an argument, the compiler will abort. If 1852 `REG_PARM_STACK_SPACE' is defined, the argument will be computed in the 1853 stack and then loaded into a register. */ 1854 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ 1855 frv_function_arg (&CUM, MODE, TYPE, NAMED, FALSE) 1856 1857 /* Define this macro if the target machine has "register windows", so that the 1858 register in which a function sees an arguments is not necessarily the same 1859 as the one in which the caller passed the argument. 1860 1861 For such machines, `FUNCTION_ARG' computes the register in which the caller 1862 passes the value, and `FUNCTION_INCOMING_ARG' should be defined in a similar 1863 fashion to tell the function being called where the arguments will arrive. 1864 1865 If `FUNCTION_INCOMING_ARG' is not defined, `FUNCTION_ARG' serves both 1866 purposes. */ 1867 1868 #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \ 1869 frv_function_arg (&CUM, MODE, TYPE, NAMED, TRUE) 1870 1871 /* A C expression for the number of words, at the beginning of an argument, 1872 must be put in registers. The value must be zero for arguments that are 1873 passed entirely in registers or that are entirely pushed on the stack. 1874 1875 On some machines, certain arguments must be passed partially in registers 1876 and partially in memory. On these machines, typically the first N words of 1877 arguments are passed in registers, and the rest on the stack. If a 1878 multi-word argument (a `double' or a structure) crosses that boundary, its 1879 first few words must be passed in registers and the rest must be pushed. 1880 This macro tells the compiler when this occurs, and how many of the words 1881 should go in registers. 1882 1883 `FUNCTION_ARG' for these arguments should return the first register to be 1884 used by the caller for this argument; likewise `FUNCTION_INCOMING_ARG', for 1885 the called function. */ 1886 #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ 1887 frv_function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED) 1888 1889 /* extern int frv_function_arg_partial_nregs (CUMULATIVE_ARGS, int, Tree, int); */ 1890 1891 /* A C expression that indicates when an argument must be passed by reference. 1892 If nonzero for an argument, a copy of that argument is made in memory and a 1893 pointer to the argument is passed instead of the argument itself. The 1894 pointer is passed in whatever way is appropriate for passing a pointer to 1895 that type. 1896 1897 On machines where `REG_PARM_STACK_SPACE' is not defined, a suitable 1898 definition of this macro might be 1899 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \ 1900 MUST_PASS_IN_STACK (MODE, TYPE) */ 1901 #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \ 1902 frv_function_arg_pass_by_reference (&CUM, MODE, TYPE, NAMED) 1903 1904 /* If defined, a C expression that indicates when it is the called function's 1905 responsibility to make a copy of arguments passed by invisible reference. 1906 Normally, the caller makes a copy and passes the address of the copy to the 1907 routine being called. When FUNCTION_ARG_CALLEE_COPIES is defined and is 1908 nonzero, the caller does not make a copy. Instead, it passes a pointer to 1909 the "live" value. The called function must not modify this value. If it 1910 can be determined that the value won't be modified, it need not make a copy; 1911 otherwise a copy must be made. */ 1912 #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \ 1913 frv_function_arg_callee_copies (&CUM, MODE, TYPE, NAMED) 1914 1915 /* If defined, a C expression that indicates when it is more desirable to keep 1916 an argument passed by invisible reference as a reference, rather than 1917 copying it to a pseudo register. */ 1918 #define FUNCTION_ARG_KEEP_AS_REFERENCE(CUM, MODE, TYPE, NAMED) \ 1919 frv_function_arg_keep_as_reference (&CUM, MODE, TYPE, NAMED) 1920 1921 /* A C type for declaring a variable that is used as the first argument of 1922 `FUNCTION_ARG' and other related values. For some target machines, the type 1923 `int' suffices and can hold the number of bytes of argument so far. 1924 1925 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments 1926 that have been passed on the stack. The compiler has other variables to 1927 keep track of that. For target machines on which all arguments are passed 1928 on the stack, there is no need to store anything in `CUMULATIVE_ARGS'; 1929 however, the data structure must exist and should not be empty, so use 1930 `int'. */ 1931 #define CUMULATIVE_ARGS int 1932 1933 /* A C statement (sans semicolon) for initializing the variable CUM for the 1934 state at the beginning of the argument list. The variable has type 1935 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type 1936 of the function which will receive the args, or 0 if the args are to a 1937 compiler support library function. The value of INDIRECT is nonzero when 1938 processing an indirect call, for example a call through a function pointer. 1939 The value of INDIRECT is zero for a call to an explicitly named function, a 1940 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find 1941 arguments for the function being compiled. 1942 1943 When processing a call to a compiler support library function, LIBNAME 1944 identifies which one. It is a `symbol_ref' rtx which contains the name of 1945 the function, as a string. LIBNAME is 0 when an ordinary C function call is 1946 being processed. Thus, each time this macro is called, either LIBNAME or 1947 FNTYPE is nonzero, but never both of them at once. */ 1948 1949 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ 1950 frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, FNDECL, FALSE) 1951 1952 /* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the 1953 arguments for the function being compiled. If this macro is undefined, 1954 `INIT_CUMULATIVE_ARGS' is used instead. 1955 1956 The value passed for LIBNAME is always 0, since library routines with 1957 special calling conventions are never compiled with GCC. The argument 1958 LIBNAME exists for symmetry with `INIT_CUMULATIVE_ARGS'. */ 1959 1960 #define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \ 1961 frv_init_cumulative_args (&CUM, FNTYPE, LIBNAME, NULL, TRUE) 1962 1963 /* A C statement (sans semicolon) to update the summarizer variable CUM to 1964 advance past an argument in the argument list. The values MODE, TYPE and 1965 NAMED describe that argument. Once this is done, the variable CUM is 1966 suitable for analyzing the *following* argument with `FUNCTION_ARG', etc. 1967 1968 This macro need not do anything if the argument in question was passed on 1969 the stack. The compiler knows how to track the amount of stack space used 1970 for arguments without any special help. */ 1971 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ 1972 frv_function_arg_advance (&CUM, MODE, TYPE, NAMED) 1973 1974 /* If defined, a C expression that gives the alignment boundary, in bits, of an 1975 argument with the specified mode and type. If it is not defined, 1976 `PARM_BOUNDARY' is used for all arguments. */ 1977 1978 #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ 1979 frv_function_arg_boundary (MODE, TYPE) 1980 1981 /* A C expression that is nonzero if REGNO is the number of a hard register in 1982 which function arguments are sometimes passed. This does *not* include 1983 implicit arguments such as the static chain and the structure-value address. 1984 On many machines, no registers can be used for this purpose since all 1985 function arguments are pushed on the stack. */ 1986 #define FUNCTION_ARG_REGNO_P(REGNO) \ 1987 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) <= LAST_ARG_REGNUM)) 1988 1989 1990 /* How Scalar Function Values are Returned. */ 1991 1992 /* The number of the hard register that is used to return a scalar value from a 1993 function call. */ 1994 #define RETURN_VALUE_REGNUM (GPR_FIRST + 8) 1995 1996 /* A C expression to create an RTX representing the place where a function 1997 returns a value of data type VALTYPE. VALTYPE is a tree node representing a 1998 data type. Write `TYPE_MODE (VALTYPE)' to get the machine mode used to 1999 represent that type. On many machines, only the mode is relevant. 2000 (Actually, on most machines, scalar values are returned in the same place 2001 regardless of mode). 2002 2003 If `PROMOTE_FUNCTION_RETURN' is defined, you must apply the same promotion 2004 rules specified in `PROMOTE_MODE' if VALTYPE is a scalar type. 2005 2006 If the precise function being called is known, FUNC is a tree node 2007 (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This makes it 2008 possible to use a different value-returning convention for specific 2009 functions when all their calls are known. 2010 2011 `FUNCTION_VALUE' is not used for return vales with aggregate data types, 2012 because these are returned in another way. See `STRUCT_VALUE_REGNUM' and 2013 related macros, below. */ 2014 #define FUNCTION_VALUE(VALTYPE, FUNC) \ 2015 gen_rtx (REG, TYPE_MODE (VALTYPE), RETURN_VALUE_REGNUM) 2016 2017 /* A C expression to create an RTX representing the place where a library 2018 function returns a value of mode MODE. 2019 2020 Note that "library function" in this context means a compiler support 2021 routine, used to perform arithmetic, whose name is known specially by the 2022 compiler and was not mentioned in the C code being compiled. 2023 2024 The definition of `LIBRARY_VALUE' need not be concerned aggregate data 2025 types, because none of the library functions returns such types. */ 2026 #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, RETURN_VALUE_REGNUM) 2027 2028 /* A C expression that is nonzero if REGNO is the number of a hard register in 2029 which the values of called function may come back. 2030 2031 A register whose use for returning values is limited to serving as the 2032 second of a pair (for a value of type `double', say) need not be recognized 2033 by this macro. So for most machines, this definition suffices: 2034 2035 #define FUNCTION_VALUE_REGNO_P(N) ((N) == RETURN) 2036 2037 If the machine has register windows, so that the caller and the called 2038 function use different registers for the return value, this macro should 2039 recognize only the caller's register numbers. */ 2040 #define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM) 2041 2042 2043 /* How Large Values are Returned. */ 2044 2045 /* If the structure value address is passed in a register, then 2046 `STRUCT_VALUE_REGNUM' should be the number of that register. */ 2047 #define STRUCT_VALUE_REGNUM (GPR_FIRST + 3) 2048 2049 2050 /* Function Entry and Exit. */ 2051 2052 /* Define this macro as a C expression that is nonzero if the return 2053 instruction or the function epilogue ignores the value of the stack pointer; 2054 in other words, if it is safe to delete an instruction to adjust the stack 2055 pointer before a return from the function. 2056 2057 Note that this macro's value is relevant only for functions for which frame 2058 pointers are maintained. It is never safe to delete a final stack 2059 adjustment in a function that has no frame pointer, and the compiler knows 2060 this regardless of `EXIT_IGNORE_STACK'. */ 2061 #define EXIT_IGNORE_STACK 1 2062 2063 /* Generating Code for Profiling. */ 2064 2065 /* A C statement or compound statement to output to FILE some assembler code to 2066 call the profiling subroutine `mcount'. Before calling, the assembler code 2067 must load the address of a counter variable into a register where `mcount' 2068 expects to find the address. The name of this variable is `LP' followed by 2069 the number LABELNO, so you would generate the name using `LP%d' in a 2070 `fprintf'. 2071 2072 The details of how the address should be passed to `mcount' are determined 2073 by your operating system environment, not by GCC. To figure them out, 2074 compile a small program for profiling using the system's installed C 2075 compiler and look at the assembler code that results. 2076 2077 This declaration must be present, but it can be an abort if profiling is 2078 not implemented. */ 2079 2080 #define FUNCTION_PROFILER(FILE, LABELNO) 2081 2082 2083 /* Implementing the Varargs Macros. */ 2084 2085 /* If defined, is a C expression that produces the machine-specific code for a 2086 call to `__builtin_saveregs'. This code will be moved to the very beginning 2087 of the function, before any parameter access are made. The return value of 2088 this function should be an RTX that contains the value to use as the return 2089 of `__builtin_saveregs'. 2090 2091 If this macro is not defined, the compiler will output an ordinary call to 2092 the library function `__builtin_saveregs'. */ 2093 2094 #define EXPAND_BUILTIN_SAVEREGS() frv_expand_builtin_saveregs () 2095 2096 /* This macro offers an alternative to using `__builtin_saveregs' and defining 2097 the macro `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register 2098 arguments into the stack so that all the arguments appear to have been 2099 passed consecutively on the stack. Once this is done, you can use the 2100 standard implementation of varargs that works for machines that pass all 2101 their arguments on the stack. 2102 2103 The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure, containing 2104 the values that obtain after processing of the named arguments. The 2105 arguments MODE and TYPE describe the last named argument--its machine mode 2106 and its data type as a tree node. 2107 2108 The macro implementation should do two things: first, push onto the stack 2109 all the argument registers *not* used for the named arguments, and second, 2110 store the size of the data thus pushed into the `int'-valued variable whose 2111 name is supplied as the argument PRETEND_ARGS_SIZE. The value that you 2112 store here will serve as additional offset for setting up the stack frame. 2113 2114 Because you must generate code to push the anonymous arguments at compile 2115 time without knowing their data types, `SETUP_INCOMING_VARARGS' is only 2116 useful on machines that have just a single category of argument register and 2117 use it uniformly for all data types. 2118 2119 If the argument SECOND_TIME is nonzero, it means that the arguments of the 2120 function are being analyzed for the second time. This happens for an inline 2121 function, which is not actually compiled until the end of the source file. 2122 The macro `SETUP_INCOMING_VARARGS' should not generate any instructions in 2123 this case. */ 2124 #define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_ARGS_SIZE, SECOND_TIME) \ 2125 frv_setup_incoming_varargs (& ARGS_SO_FAR, (int) MODE, TYPE, \ 2126 & PRETEND_ARGS_SIZE, SECOND_TIME) 2127 2128 /* Implement the stdarg/varargs va_start macro. STDARG_P is nonzero if this 2129 is stdarg.h instead of varargs.h. VALIST is the tree of the va_list 2130 variable to initialize. NEXTARG is the machine independent notion of the 2131 'next' argument after the variable arguments. If not defined, a standard 2132 implementation will be defined that works for arguments passed on the stack. */ 2133 2134 #define EXPAND_BUILTIN_VA_START(VALIST, NEXTARG) \ 2135 (frv_expand_builtin_va_start(VALIST, NEXTARG)) 2136 2137 /* Implement the stdarg/varargs va_arg macro. VALIST is the variable of type 2138 va_list as a tree, TYPE is the type passed to va_arg. */ 2139 2140 #define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \ 2141 (frv_expand_builtin_va_arg (VALIST, TYPE)) 2142 2143 2144 /* Trampolines for Nested Functions. */ 2145 2146 /* A C expression for the size in bytes of the trampoline, as an integer. */ 2147 #define TRAMPOLINE_SIZE frv_trampoline_size () 2148 2149 /* Alignment required for trampolines, in bits. 2150 2151 If you don't define this macro, the value of `BIGGEST_ALIGNMENT' is used for 2152 aligning trampolines. */ 2153 #define TRAMPOLINE_ALIGNMENT 32 2154 2155 /* A C statement to initialize the variable parts of a trampoline. ADDR is an 2156 RTX for the address of the trampoline; FNADDR is an RTX for the address of 2157 the nested function; STATIC_CHAIN is an RTX for the static chain value that 2158 should be passed to the function when it is called. */ 2159 #define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \ 2160 frv_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN) 2161 2162 /* Define this macro if trampolines need a special subroutine to do their work. 2163 The macro should expand to a series of `asm' statements which will be 2164 compiled with GCC. They go in a library function named 2165 `__transfer_from_trampoline'. 2166 2167 If you need to avoid executing the ordinary prologue code of a compiled C 2168 function when you jump to the subroutine, you can do so by placing a special 2169 label of your own in the assembler code. Use one `asm' statement to 2170 generate an assembler label, and another to make the label global. Then 2171 trampolines can use that label to jump directly to your special assembler 2172 code. */ 2173 2174 #ifdef __FRV_UNDERSCORE__ 2175 #define TRAMPOLINE_TEMPLATE_NAME "___trampoline_template" 2176 #else 2177 #define TRAMPOLINE_TEMPLATE_NAME "__trampoline_template" 2178 #endif 2179 2180 #define TRANSFER_FROM_TRAMPOLINE \ 2181 extern int _write (int, const void *, unsigned); \ 2182 \ 2183 void \ 2184 __trampoline_setup (short * addr, int size, int fnaddr, int sc) \ 2185 { \ 2186 extern short __trampoline_template[]; \ 2187 short * to = addr; \ 2188 short * from = &__trampoline_template[0]; \ 2189 int i; \ 2190 \ 2191 if (size < 20) \ 2192 { \ 2193 _write (2, "__trampoline_setup bad size\n", \ 2194 sizeof ("__trampoline_setup bad size\n") - 1); \ 2195 exit (-1); \ 2196 } \ 2197 \ 2198 to[0] = from[0]; \ 2199 to[1] = (short)(fnaddr); \ 2200 to[2] = from[2]; \ 2201 to[3] = (short)(sc); \ 2202 to[4] = from[4]; \ 2203 to[5] = (short)(fnaddr >> 16); \ 2204 to[6] = from[6]; \ 2205 to[7] = (short)(sc >> 16); \ 2206 to[8] = from[8]; \ 2207 to[9] = from[9]; \ 2208 \ 2209 for (i = 0; i < 20; i++) \ 2210 __asm__ volatile ("dcf @(%0,%1)\n\tici @(%0,%1)" :: "r" (to), "r" (i)); \ 2211 } \ 2212 \ 2213 __asm__("\n" \ 2214 "\t.globl " TRAMPOLINE_TEMPLATE_NAME "\n" \ 2215 "\t.text\n" \ 2216 TRAMPOLINE_TEMPLATE_NAME ":\n" \ 2217 "\tsetlos #0, gr6\n" /* jump register */ \ 2218 "\tsetlos #0, gr7\n" /* static chain */ \ 2219 "\tsethi #0, gr6\n" \ 2220 "\tsethi #0, gr7\n" \ 2221 "\tjmpl @(gr0,gr6)\n"); 2222 2223 2224 /* Addressing Modes. */ 2225 2226 /* A C expression that is 1 if the RTX X is a constant which is a valid 2227 address. On most machines, this can be defined as `CONSTANT_P (X)', but a 2228 few machines are more restrictive in which constant addresses are supported. 2229 2230 `CONSTANT_P' accepts integer-values expressions whose values are not 2231 explicitly known, such as `symbol_ref', `label_ref', and `high' expressions 2232 and `const' arithmetic expressions, in addition to `const_int' and 2233 `const_double' expressions. */ 2234 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) 2235 2236 /* A number, the maximum number of registers that can appear in a valid memory 2237 address. Note that it is up to you to specify a value equal to the maximum 2238 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */ 2239 #define MAX_REGS_PER_ADDRESS 2 2240 2241 /* A C compound statement with a conditional `goto LABEL;' executed if X (an 2242 RTX) is a legitimate memory address on the target machine for a memory 2243 operand of mode MODE. 2244 2245 It usually pays to define several simpler macros to serve as subroutines for 2246 this one. Otherwise it may be too complicated to understand. 2247 2248 This macro must exist in two variants: a strict variant and a non-strict 2249 one. The strict variant is used in the reload pass. It must be defined so 2250 that any pseudo-register that has not been allocated a hard register is 2251 considered a memory reference. In contexts where some kind of register is 2252 required, a pseudo-register with no hard register must be rejected. 2253 2254 The non-strict variant is used in other passes. It must be defined to 2255 accept all pseudo-registers in every context where some kind of register is 2256 required. 2257 2258 Compiler source files that want to use the strict variant of this macro 2259 define the macro `REG_OK_STRICT'. You should use an `#ifdef REG_OK_STRICT' 2260 conditional to define the strict variant in that case and the non-strict 2261 variant otherwise. 2262 2263 Subroutines to check for acceptable registers for various purposes (one for 2264 base registers, one for index registers, and so on) are typically among the 2265 subroutines used to define `GO_IF_LEGITIMATE_ADDRESS'. Then only these 2266 subroutine macros need have two variants; the higher levels of macros may be 2267 the same whether strict or not. 2268 2269 Normally, constant addresses which are the sum of a `symbol_ref' and an 2270 integer are stored inside a `const' RTX to mark them as constant. 2271 Therefore, there is no need to recognize such sums specifically as 2272 legitimate addresses. Normally you would simply recognize any `const' as 2273 legitimate. 2274 2275 Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle constant sums that 2276 are not marked with `const'. It assumes that a naked `plus' indicates 2277 indexing. If so, then you *must* reject such naked constant sums as 2278 illegitimate addresses, so that none of them will be given to 2279 `PRINT_OPERAND_ADDRESS'. 2280 2281 On some machines, whether a symbolic address is legitimate depends on the 2282 section that the address refers to. On these machines, define the macro 2283 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and 2284 then check for it here. When you see a `const', you will have to look 2285 inside it to find the `symbol_ref' in order to determine the section. 2286 2287 The best way to modify the name string is by adding text to the beginning, 2288 with suitable punctuation to prevent any ambiguity. Allocate the new name 2289 in `saveable_obstack'. You will have to modify `ASM_OUTPUT_LABELREF' to 2290 remove and decode the added text and output the name accordingly, and define 2291 `(* targetm.strip_name_encoding)' to access the original name string. 2292 2293 You can check the information stored here into the `symbol_ref' in the 2294 definitions of the macros `GO_IF_LEGITIMATE_ADDRESS' and 2295 `PRINT_OPERAND_ADDRESS'. */ 2296 2297 #ifdef REG_OK_STRICT 2298 #define REG_OK_STRICT_P 1 2299 #else 2300 #define REG_OK_STRICT_P 0 2301 #endif 2302 2303 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 2304 do \ 2305 { \ 2306 if (frv_legitimate_address_p (MODE, X, REG_OK_STRICT_P, FALSE)) \ 2307 goto LABEL; \ 2308 } \ 2309 while (0) 2310 2311 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 2312 use as a base register. For hard registers, it should always accept those 2313 which the hardware permits and reject the others. Whether the macro accepts 2314 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as 2315 described above. This usually requires two variant definitions, of which 2316 `REG_OK_STRICT' controls the one actually used. */ 2317 #ifdef REG_OK_STRICT 2318 #define REG_OK_FOR_BASE_P(X) GPR_P (REGNO (X)) 2319 #else 2320 #define REG_OK_FOR_BASE_P(X) GPR_AP_OR_PSEUDO_P (REGNO (X)) 2321 #endif 2322 2323 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 2324 use as an index register. 2325 2326 The difference between an index register and a base register is that the 2327 index register may be scaled. If an address involves the sum of two 2328 registers, neither one of them scaled, then either one may be labeled the 2329 "base" and the other the "index"; but whichever labeling is used must fit 2330 the machine's constraints of which registers may serve in each capacity. 2331 The compiler will try both labelings, looking for one that is valid, and 2332 will reload one or both registers only if neither labeling works. */ 2333 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) 2334 2335 /* A C compound statement that attempts to replace X with a valid memory 2336 address for an operand of mode MODE. WIN will be a C statement label 2337 elsewhere in the code; the macro definition may use 2338 2339 GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); 2340 2341 to avoid further processing if the address has become legitimate. 2342 2343 X will always be the result of a call to `break_out_memory_refs', and OLDX 2344 will be the operand that was given to that function to produce X. 2345 2346 The code generated by this macro should not alter the substructure of X. If 2347 it transforms X into a more legitimate form, it should assign X (which will 2348 always be a C variable) a new value. 2349 2350 It is not necessary for this macro to come up with a legitimate address. 2351 The compiler has standard ways of doing so in all cases. In fact, it is 2352 safe for this macro to do nothing. But often a machine-dependent strategy 2353 can generate better code. */ 2354 2355 /* On the FRV, we use it to convert small data and pic references into using 2356 the appropriate pointer in the address. */ 2357 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \ 2358 do \ 2359 { \ 2360 rtx newx = frv_legitimize_address (X, OLDX, MODE); \ 2361 \ 2362 if (newx) \ 2363 { \ 2364 (X) = newx; \ 2365 goto WIN; \ 2366 } \ 2367 } \ 2368 while (0) 2369 2370 /* A C statement or compound statement with a conditional `goto LABEL;' 2371 executed if memory address X (an RTX) can have different meanings depending 2372 on the machine mode of the memory reference it is used for or if the address 2373 is valid for some modes but not others. 2374 2375 Autoincrement and autodecrement addresses typically have mode-dependent 2376 effects because the amount of the increment or decrement is the size of the 2377 operand being addressed. Some machines have other mode-dependent addresses. 2378 Many RISC machines have no mode-dependent addresses. 2379 2380 You may assume that ADDR is a valid address for the machine. */ 2381 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) 2382 2383 /* A C expression that is nonzero if X is a legitimate constant for an 2384 immediate operand on the target machine. You can assume that X satisfies 2385 `CONSTANT_P', so you need not check this. In fact, `1' is a suitable 2386 definition for this macro on machines where anything `CONSTANT_P' is valid. */ 2387 #define LEGITIMATE_CONSTANT_P(X) frv_legitimate_constant_p (X) 2388 2389 /* The load-and-update commands allow pre-modification in addresses. 2390 The index has to be in a register. */ 2391 #define HAVE_PRE_MODIFY_REG 1 2392 2393 2394 /* Returns a mode from class `MODE_CC' to be used when comparison operation 2395 code OP is applied to rtx X and Y. For example, on the SPARC, 2396 `SELECT_CC_MODE' is defined as (see *note Jump Patterns::. for a 2397 description of the reason for this definition) 2398 2399 #define SELECT_CC_MODE(OP,X,Y) \ 2400 (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ 2401 ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \ 2402 : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ 2403 || GET_CODE (X) == NEG) \ 2404 ? CC_NOOVmode : CCmode)) 2405 2406 You need not define this macro if `EXTRA_CC_MODES' is not defined. */ 2407 #define SELECT_CC_MODE(OP, X, Y) \ 2408 (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ 2409 ? CC_FPmode \ 2410 : (((OP) == LEU || (OP) == GTU || (OP) == LTU || (OP) == GEU) \ 2411 ? CC_UNSmode \ 2412 : CCmode)) 2413 2414 /* A C expression whose value is one if it is always safe to reverse a 2415 comparison whose mode is MODE. If `SELECT_CC_MODE' can ever return MODE for 2416 a floating-point inequality comparison, then `REVERSIBLE_CC_MODE (MODE)' 2417 must be zero. 2418 2419 You need not define this macro if it would always returns zero or if the 2420 floating-point format is anything other than `IEEE_FLOAT_FORMAT'. For 2421 example, here is the definition used on the SPARC, where floating-point 2422 inequality comparisons are always given `CCFPEmode': 2423 2424 #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) */ 2425 2426 /* On frv, don't consider floating point comparisons to be reversible. In 2427 theory, fp equality comparisons can be reversible. */ 2428 #define REVERSIBLE_CC_MODE(MODE) ((MODE) == CCmode || (MODE) == CC_UNSmode) 2429 2430 /* Frv CCR_MODE's are not reversible. */ 2431 #define REVERSE_CONDEXEC_PREDICATES_P(x,y) 0 2432 2433 2434 /* Describing Relative Costs of Operations. */ 2435 2436 /* A C expression for the cost of moving data from a register in class FROM to 2437 one in class TO. The classes are expressed using the enumeration values 2438 such as `GENERAL_REGS'. A value of 4 is the default; other values are 2439 interpreted relative to that. 2440 2441 It is not required that the cost always equal 2 when FROM is the same as TO; 2442 on some machines it is expensive to move between registers if they are not 2443 general registers. 2444 2445 If reload sees an insn consisting of a single `set' between two hard 2446 registers, and if `REGISTER_MOVE_COST' applied to their classes returns a 2447 value of 2, reload does not check to ensure that the constraints of the insn 2448 are met. Setting a cost of other than 2 will allow reload to verify that 2449 the constraints are met. You should do this if the `movM' pattern's 2450 constraints do not allow such copying. */ 2451 #define REGISTER_MOVE_COST(MODE, FROM, TO) frv_register_move_cost (FROM, TO) 2452 2453 /* A C expression for the cost of moving data of mode M between a register and 2454 memory. A value of 2 is the default; this cost is relative to those in 2455 `REGISTER_MOVE_COST'. 2456 2457 If moving between registers and memory is more expensive than between two 2458 registers, you should define this macro to express the relative cost. */ 2459 #define MEMORY_MOVE_COST(M,C,I) 4 2460 2461 /* A C expression for the cost of a branch instruction. A value of 1 is the 2462 default; other values are interpreted relative to that. */ 2463 2464 /* Here are additional macros which do not specify precise relative costs, but 2465 only that certain actions are more expensive than GCC would ordinarily 2466 expect. */ 2467 2468 /* We used to default the branch cost to 2, but I changed it to 1, to avoid 2469 generating SCC instructions and or/and-ing them together, and then doing the 2470 branch on the result, which collectively generate much worse code. */ 2471 #ifndef DEFAULT_BRANCH_COST 2472 #define DEFAULT_BRANCH_COST 1 2473 #endif 2474 2475 #define BRANCH_COST frv_branch_cost_int 2476 2477 /* Define this macro as a C expression which is nonzero if accessing less than 2478 a word of memory (i.e. a `char' or a `short') is no faster than accessing a 2479 word of memory, i.e., if such access require more than one instruction or if 2480 there is no difference in cost between byte and (aligned) word loads. 2481 2482 When this macro is not defined, the compiler will access a field by finding 2483 the smallest containing object; when it is defined, a fullword load will be 2484 used if alignment permits. Unless bytes accesses are faster than word 2485 accesses, using word accesses is preferable since it may eliminate 2486 subsequent memory access if subsequent accesses occur to other fields in the 2487 same word of the structure, but to different bytes. */ 2488 #define SLOW_BYTE_ACCESS 1 2489 2490 /* Define this macro if it is as good or better to call a constant function 2491 address than to call an address kept in a register. */ 2492 #define NO_FUNCTION_CSE 2493 2494 /* Define this macro if it is as good or better for a function to call itself 2495 with an explicit address than to call an address kept in a register. */ 2496 #define NO_RECURSIVE_FUNCTION_CSE 2497 2498 2499 /* Dividing the output into sections. */ 2500 2501 /* A C expression whose value is a string containing the assembler operation 2502 that should precede instructions and read-only data. Normally `".text"' is 2503 right. */ 2504 #define TEXT_SECTION_ASM_OP "\t.text" 2505 2506 /* A C expression whose value is a string containing the assembler operation to 2507 identify the following data as writable initialized data. Normally 2508 `".data"' is right. */ 2509 #define DATA_SECTION_ASM_OP "\t.data" 2510 2511 /* If defined, a C expression whose value is a string containing the 2512 assembler operation to identify the following data as 2513 uninitialized global data. If not defined, and neither 2514 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, 2515 uninitialized global data will be output in the data section if 2516 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be 2517 used. */ 2518 #define BSS_SECTION_ASM_OP "\t.section .bss,\"aw\"" 2519 2520 /* Short Data Support */ 2521 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\"" 2522 2523 /* On svr4, we *do* have support for the .init and .fini sections, and we 2524 can put stuff in there to be executed before and after `main'. We let 2525 crtstuff.c and other files know this by defining the following symbols. 2526 The definitions say how to change sections to the .init and .fini 2527 sections. This is the same for all known svr4 assemblers. 2528 2529 The standard System V.4 macros will work, but they look ugly in the 2530 assembly output, so redefine them. */ 2531 2532 #undef INIT_SECTION_ASM_OP 2533 #undef FINI_SECTION_ASM_OP 2534 #define INIT_SECTION_ASM_OP "\t.section .init,\"ax\"" 2535 #define FINI_SECTION_ASM_OP "\t.section .fini,\"ax\"" 2536 2537 #undef CTORS_SECTION_ASM_OP 2538 #undef DTORS_SECTION_ASM_OP 2539 #define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"a\"" 2540 #define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"a\"" 2541 2542 /* A C expression whose value is a string containing the assembler operation to 2543 switch to the fixup section that records all initialized pointers in a -fpic 2544 program so they can be changed program startup time if the program is loaded 2545 at a different address than linked for. */ 2546 #define FIXUP_SECTION_ASM_OP "\t.section .rofixup,\"a\"" 2547 2548 /* A list of names for sections other than the standard two, which are 2549 `in_text' and `in_data'. You need not define this macro 2550 on a system with no other sections (that GCC needs to use). */ 2551 #undef EXTRA_SECTIONS 2552 #define EXTRA_SECTIONS in_sdata, in_const, in_fixup 2553 2554 /* One or more functions to be defined in "varasm.c". These 2555 functions should do jobs analogous to those of `text_section' and 2556 `data_section', for your additional sections. Do not define this 2557 macro if you do not define `EXTRA_SECTIONS'. */ 2558 #undef EXTRA_SECTION_FUNCTIONS 2559 #define EXTRA_SECTION_FUNCTIONS \ 2560 SDATA_SECTION_FUNCTION \ 2561 FIXUP_SECTION_FUNCTION 2562 2563 #define SDATA_SECTION_FUNCTION \ 2564 void \ 2565 sdata_section (void) \ 2566 { \ 2567 if (in_section != in_sdata) \ 2568 { \ 2569 fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ 2570 in_section = in_sdata; \ 2571 } \ 2572 } 2573 2574 #define FIXUP_SECTION_FUNCTION \ 2575 void \ 2576 fixup_section (void) \ 2577 { \ 2578 if (in_section != in_fixup) \ 2579 { \ 2580 fprintf (asm_out_file, "%s\n", FIXUP_SECTION_ASM_OP); \ 2581 in_section = in_fixup; \ 2582 } \ 2583 } 2584 2585 /* Position Independent Code. */ 2586 2587 /* A C expression that is nonzero if X is a legitimate immediate operand on the 2588 target machine when generating position independent code. You can assume 2589 that X satisfies `CONSTANT_P', so you need not check this. You can also 2590 assume FLAG_PIC is true, so you need not check it either. You need not 2591 define this macro if all constants (including `SYMBOL_REF') can be immediate 2592 operands when generating position independent code. */ 2593 #define LEGITIMATE_PIC_OPERAND_P(X) \ 2594 ( GET_CODE (X) == CONST_INT \ 2595 || GET_CODE (X) == CONST_DOUBLE \ 2596 || (GET_CODE (X) == HIGH && GET_CODE (XEXP (X, 0)) == CONST_INT) \ 2597 || GET_CODE (X) == CONSTANT_P_RTX) 2598 2599 2600 /* The Overall Framework of an Assembler File. */ 2601 2602 /* A C string constant describing how to begin a comment in the target 2603 assembler language. The compiler assumes that the comment will end at the 2604 end of the line. */ 2605 #define ASM_COMMENT_START ";" 2606 2607 /* A C string constant for text to be output before each `asm' statement or 2608 group of consecutive ones. Normally this is `"#APP"', which is a comment 2609 that has no effect on most assemblers but tells the GNU assembler that it 2610 must check the lines that follow for all valid assembler constructs. */ 2611 #define ASM_APP_ON "#APP\n" 2612 2613 /* A C string constant for text to be output after each `asm' statement or 2614 group of consecutive ones. Normally this is `"#NO_APP"', which tells the 2615 GNU assembler to resume making the time-saving assumptions that are valid 2616 for ordinary compiler output. */ 2617 #define ASM_APP_OFF "#NO_APP\n" 2618 2619 2620 /* Output of Data. */ 2621 2622 /* This is how to output a label to dwarf/dwarf2. */ 2623 #define ASM_OUTPUT_DWARF_ADDR(STREAM, LABEL) \ 2624 do { \ 2625 fprintf (STREAM, "\t.picptr\t"); \ 2626 assemble_name (STREAM, LABEL); \ 2627 } while (0) 2628 2629 /* Whether to emit the gas specific dwarf2 line number support. */ 2630 #define DWARF2_ASM_LINE_DEBUG_INFO (TARGET_DEBUG_LOC) 2631 2632 /* Output of Uninitialized Variables. */ 2633 2634 /* A C statement (sans semicolon) to output to the stdio stream STREAM the 2635 assembler definition of a local-common-label named NAME whose size is SIZE 2636 bytes. The variable ROUNDED is the size rounded up to whatever alignment 2637 the caller wants. 2638 2639 Use the expression `assemble_name (STREAM, NAME)' to output the name itself; 2640 before and after that, output the additional assembler syntax for defining 2641 the name, and a newline. 2642 2643 This macro controls how the assembler definitions of uninitialized static 2644 variables are output. */ 2645 #undef ASM_OUTPUT_LOCAL 2646 2647 /* Like `ASM_OUTPUT_LOCAL' except takes the required alignment as a separate, 2648 explicit argument. If you define this macro, it is used in place of 2649 `ASM_OUTPUT_LOCAL', and gives you more flexibility in handling the required 2650 alignment of the variable. The alignment is specified as the number of 2651 bits. 2652 2653 Defined in svr4.h. */ 2654 #undef ASM_OUTPUT_ALIGNED_LOCAL 2655 2656 /* This is for final.c, because it is used by ASM_DECLARE_OBJECT_NAME. */ 2657 extern int size_directive_output; 2658 2659 /* Like `ASM_OUTPUT_ALIGNED_LOCAL' except that it takes an additional 2660 parameter - the DECL of variable to be output, if there is one. 2661 This macro can be called with DECL == NULL_TREE. If you define 2662 this macro, it is used in place of `ASM_OUTPUT_LOCAL' and 2663 `ASM_OUTPUT_ALIGNED_LOCAL', and gives you more flexibility in 2664 handling the destination of the variable. */ 2665 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL 2666 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGN) \ 2667 do { \ 2668 if ((SIZE) > 0 && (SIZE) <= g_switch_value) \ 2669 named_section (0, ".sbss", 0); \ 2670 else \ 2671 bss_section (); \ 2672 ASM_OUTPUT_ALIGN (STREAM, floor_log2 ((ALIGN) / BITS_PER_UNIT)); \ 2673 ASM_DECLARE_OBJECT_NAME (STREAM, NAME, DECL); \ 2674 ASM_OUTPUT_SKIP (STREAM, (SIZE) ? (SIZE) : 1); \ 2675 } while (0) 2676 2677 2678 /* Output and Generation of Labels. */ 2679 2680 /* A C statement (sans semicolon) to output to the stdio stream STREAM the 2681 assembler definition of a label named NAME. Use the expression 2682 `assemble_name (STREAM, NAME)' to output the name itself; before and after 2683 that, output the additional assembler syntax for defining the name, and a 2684 newline. */ 2685 #define ASM_OUTPUT_LABEL(STREAM, NAME) \ 2686 do { \ 2687 assemble_name (STREAM, NAME); \ 2688 fputs (":\n", STREAM); \ 2689 } while (0) 2690 2691 /* Globalizing directive for a label. */ 2692 #define GLOBAL_ASM_OP "\t.globl " 2693 2694 /* A C statement to store into the string STRING a label whose name is made 2695 from the string PREFIX and the number NUM. 2696 2697 This string, when output subsequently by `assemble_name', should produce the 2698 output that `(*targetm.asm_out.internal_label)' would produce with the same PREFIX 2699 and NUM. 2700 2701 If the string begins with `*', then `assemble_name' will output the rest of 2702 the string unchanged. It is often convenient for 2703 `ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the string doesn't 2704 start with `*', then `ASM_OUTPUT_LABELREF' gets to output the string, and 2705 may change it. (Of course, `ASM_OUTPUT_LABELREF' is also part of your 2706 machine description, so you should know what it does on your machine.) 2707 2708 Defined in svr4.h. */ 2709 #undef ASM_GENERATE_INTERNAL_LABEL 2710 #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ 2711 do { \ 2712 sprintf (LABEL, "*.%s%ld", PREFIX, (long)NUM); \ 2713 } while (0) 2714 2715 2716 /* Macros Controlling Initialization Routines. */ 2717 2718 /* If defined, a C string constant for the assembler operation to identify the 2719 following data as initialization code. If not defined, GCC will assume 2720 such a section does not exist. When you are using special sections for 2721 initialization and termination functions, this macro also controls how 2722 `crtstuff.c' and `libgcc2.c' arrange to run the initialization functions. 2723 2724 Defined in svr4.h. */ 2725 #undef INIT_SECTION_ASM_OP 2726 2727 /* If defined, `main' will call `__main' despite the presence of 2728 `INIT_SECTION_ASM_OP'. This macro should be defined for systems where the 2729 init section is not actually run automatically, but is still useful for 2730 collecting the lists of constructors and destructors. */ 2731 #define INVOKE__main 2732 2733 /* Output of Assembler Instructions. */ 2734 2735 /* A C initializer containing the assembler's names for the machine registers, 2736 each one as a C string constant. This is what translates register numbers 2737 in the compiler into assembler language. */ 2738 #define REGISTER_NAMES \ 2739 { \ 2740 "gr0", "sp", "fp", "gr3", "gr4", "gr5", "gr6", "gr7", \ 2741 "gr8", "gr9", "gr10", "gr11", "gr12", "gr13", "gr14", "gr15", \ 2742 "gr16", "gr17", "gr18", "gr19", "gr20", "gr21", "gr22", "gr23", \ 2743 "gr24", "gr25", "gr26", "gr27", "gr28", "gr29", "gr30", "gr31", \ 2744 "gr32", "gr33", "gr34", "gr35", "gr36", "gr37", "gr38", "gr39", \ 2745 "gr40", "gr41", "gr42", "gr43", "gr44", "gr45", "gr46", "gr47", \ 2746 "gr48", "gr49", "gr50", "gr51", "gr52", "gr53", "gr54", "gr55", \ 2747 "gr56", "gr57", "gr58", "gr59", "gr60", "gr61", "gr62", "gr63", \ 2748 \ 2749 "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \ 2750 "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15", \ 2751 "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23", \ 2752 "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31", \ 2753 "fr32", "fr33", "fr34", "fr35", "fr36", "fr37", "fr38", "fr39", \ 2754 "fr40", "fr41", "fr42", "fr43", "fr44", "fr45", "fr46", "fr47", \ 2755 "fr48", "fr49", "fr50", "fr51", "fr52", "fr53", "fr54", "fr55", \ 2756 "fr56", "fr57", "fr58", "fr59", "fr60", "fr61", "fr62", "fr63", \ 2757 \ 2758 "fcc0", "fcc1", "fcc2", "fcc3", "icc0", "icc1", "icc2", "icc3", \ 2759 "cc0", "cc1", "cc2", "cc3", "cc4", "cc5", "cc6", "cc7", \ 2760 "acc0", "acc1", "acc2", "acc3", "acc4", "acc5", "acc6", "acc7", \ 2761 "accg0","accg1","accg2","accg3","accg4","accg5","accg6","accg7", \ 2762 "ap", "lr", "lcr" \ 2763 } 2764 2765 /* Define this macro if you are using an unusual assembler that 2766 requires different names for the machine instructions. 2767 2768 The definition is a C statement or statements which output an 2769 assembler instruction opcode to the stdio stream STREAM. The 2770 macro-operand PTR is a variable of type `char *' which points to 2771 the opcode name in its "internal" form--the form that is written 2772 in the machine description. The definition should output the 2773 opcode name to STREAM, performing any translation you desire, and 2774 increment the variable PTR to point at the end of the opcode so 2775 that it will not be output twice. 2776 2777 In fact, your macro definition may process less than the entire 2778 opcode name, or more than the opcode name; but if you want to 2779 process text that includes `%'-sequences to substitute operands, 2780 you must take care of the substitution yourself. Just be sure to 2781 increment PTR over whatever text should not be output normally. 2782 2783 If you need to look at the operand values, they can be found as the 2784 elements of `recog_operand'. 2785 2786 If the macro definition does nothing, the instruction is output in 2787 the usual way. */ 2788 2789 #define ASM_OUTPUT_OPCODE(STREAM, PTR)\ 2790 (PTR) = frv_asm_output_opcode (STREAM, PTR) 2791 2792 /* If defined, a C statement to be executed just prior to the output 2793 of assembler code for INSN, to modify the extracted operands so 2794 they will be output differently. 2795 2796 Here the argument OPVEC is the vector containing the operands 2797 extracted from INSN, and NOPERANDS is the number of elements of 2798 the vector which contain meaningful data for this insn. The 2799 contents of this vector are what will be used to convert the insn 2800 template into assembler code, so you can change the assembler 2801 output by changing the contents of the vector. 2802 2803 This macro is useful when various assembler syntaxes share a single 2804 file of instruction patterns; by defining this macro differently, 2805 you can cause a large class of instructions to be output 2806 differently (such as with rearranged operands). Naturally, 2807 variations in assembler syntax affecting individual insn patterns 2808 ought to be handled by writing conditional output routines in 2809 those patterns. 2810 2811 If this macro is not defined, it is equivalent to a null statement. */ 2812 2813 #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS)\ 2814 frv_final_prescan_insn (INSN, OPVEC, NOPERANDS) 2815 2816 2817 /* A C compound statement to output to stdio stream STREAM the assembler syntax 2818 for an instruction operand X. X is an RTL expression. 2819 2820 CODE is a value that can be used to specify one of several ways of printing 2821 the operand. It is used when identical operands must be printed differently 2822 depending on the context. CODE comes from the `%' specification that was 2823 used to request printing of the operand. If the specification was just 2824 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is 2825 the ASCII code for LTR. 2826 2827 If X is a register, this macro should print the register's name. The names 2828 can be found in an array `reg_names' whose type is `char *[]'. `reg_names' 2829 is initialized from `REGISTER_NAMES'. 2830 2831 When the machine description has a specification `%PUNCT' (a `%' followed by 2832 a punctuation character), this macro is called with a null pointer for X and 2833 the punctuation character for CODE. */ 2834 #define PRINT_OPERAND(STREAM, X, CODE) frv_print_operand (STREAM, X, CODE) 2835 2836 /* A C expression which evaluates to true if CODE is a valid punctuation 2837 character for use in the `PRINT_OPERAND' macro. If 2838 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation 2839 characters (except for the standard one, `%') are used in this way. */ 2840 /* . == gr0 2841 # == hint operand -- always zero for now 2842 @ == small data base register (gr16) 2843 ~ == pic register (gr17) 2844 * == temporary integer CCR register (cr3) 2845 & == temporary integer ICC register (icc3) */ 2846 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ 2847 ((CODE) == '.' || (CODE) == '#' || (CODE) == '@' || (CODE) == '~' \ 2848 || (CODE) == '*' || (CODE) == '&') 2849 2850 /* A C compound statement to output to stdio stream STREAM the assembler syntax 2851 for an instruction operand that is a memory reference whose address is X. X 2852 is an RTL expression. 2853 2854 On some machines, the syntax for a symbolic address depends on the section 2855 that the address refers to. On these machines, define the macro 2856 `ENCODE_SECTION_INFO' to store the information into the `symbol_ref', and 2857 then check for it here. 2858 2859 This declaration must be present. */ 2860 #define PRINT_OPERAND_ADDRESS(STREAM, X) frv_print_operand_address (STREAM, X) 2861 2862 /* If defined, C string expressions to be used for the `%R', `%L', `%U', and 2863 `%I' options of `asm_fprintf' (see `final.c'). These are useful when a 2864 single `md' file must support multiple assembler formats. In that case, the 2865 various `tm.h' files can define these macros differently. 2866 2867 USER_LABEL_PREFIX is defined in svr4.h. */ 2868 #undef USER_LABEL_PREFIX 2869 #define USER_LABEL_PREFIX "" 2870 #define REGISTER_PREFIX "" 2871 #define LOCAL_LABEL_PREFIX "." 2872 #define IMMEDIATE_PREFIX "#" 2873 2874 2875 /* Output of dispatch tables. */ 2876 2877 /* This macro should be provided on machines where the addresses in a dispatch 2878 table are relative to the table's own address. 2879 2880 The definition should be a C statement to output to the stdio stream STREAM 2881 an assembler pseudo-instruction to generate a difference between two labels. 2882 VALUE and REL are the numbers of two internal labels. The definitions of 2883 these labels are output using `(*targetm.asm_out.internal_label)', and they must be 2884 printed in the same way here. For example, 2885 2886 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */ 2887 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ 2888 fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL) 2889 2890 /* This macro should be provided on machines where the addresses in a dispatch 2891 table are absolute. 2892 2893 The definition should be a C statement to output to the stdio stream STREAM 2894 an assembler pseudo-instruction to generate a reference to a label. VALUE 2895 is the number of an internal label whose definition is output using 2896 `(*targetm.asm_out.internal_label)'. For example, 2897 2898 fprintf (STREAM, "\t.word L%d\n", VALUE) */ 2899 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ 2900 fprintf (STREAM, "\t.word .L%d\n", VALUE) 2901 2902 /* Define this if the label before a jump-table needs to be output specially. 2903 The first three arguments are the same as for `(*targetm.asm_out.internal_label)'; 2904 the fourth argument is the jump-table which follows (a `jump_insn' 2905 containing an `addr_vec' or `addr_diff_vec'). 2906 2907 This feature is used on system V to output a `swbeg' statement for the 2908 table. 2909 2910 If this macro is not defined, these labels are output with 2911 `(*targetm.asm_out.internal_label)'. 2912 2913 Defined in svr4.h. */ 2914 /* When generating embedded PIC or mips16 code we want to put the jump 2915 table in the .text section. In all other cases, we want to put the 2916 jump table in the .rdata section. Unfortunately, we can't use 2917 JUMP_TABLES_IN_TEXT_SECTION, because it is not conditional. 2918 Instead, we use ASM_OUTPUT_CASE_LABEL to switch back to the .text 2919 section if appropriate. */ 2920 2921 #undef ASM_OUTPUT_CASE_LABEL 2922 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \ 2923 do { \ 2924 if (flag_pic) \ 2925 function_section (current_function_decl); \ 2926 (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM); \ 2927 } while (0) 2928 2929 /* Define this to determine whether case statement labels are relative to 2930 the start of the case statement or not. */ 2931 2932 #define CASE_VECTOR_PC_RELATIVE (flag_pic) 2933 2934 2935 /* Assembler Commands for Exception Regions. */ 2936 2937 /* Define this macro to 0 if your target supports DWARF 2 frame unwind 2938 information, but it does not yet work with exception handling. Otherwise, 2939 if your target supports this information (if it defines 2940 `INCOMING_RETURN_ADDR_RTX' and either `UNALIGNED_INT_ASM_OP' or 2941 `OBJECT_FORMAT_ELF'), GCC will provide a default definition of 1. 2942 2943 If this macro is defined to 1, the DWARF 2 unwinder will be the default 2944 exception handling mechanism; otherwise, setjmp/longjmp will be used by 2945 default. 2946 2947 If this macro is defined to anything, the DWARF 2 unwinder will be used 2948 instead of inline unwinders and __unwind_function in the non-setjmp case. */ 2949 #define DWARF2_UNWIND_INFO 1 2950 2951 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LR_REGNO) 2952 2953 /* Assembler Commands for Alignment. */ 2954 2955 /* A C statement to output to the stdio stream STREAM an assembler instruction 2956 to advance the location counter by NBYTES bytes. Those bytes should be zero 2957 when loaded. NBYTES will be a C expression of type `int'. 2958 2959 Defined in svr4.h. */ 2960 #undef ASM_OUTPUT_SKIP 2961 #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \ 2962 fprintf (STREAM, "\t.zero\t%u\n", (int)(NBYTES)) 2963 2964 /* A C statement to output to the stdio stream STREAM an assembler command to 2965 advance the location counter to a multiple of 2 to the POWER bytes. POWER 2966 will be a C expression of type `int'. */ 2967 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ 2968 fprintf ((STREAM), "\t.p2align %d\n", (POWER)) 2969 2970 /* Inside the text section, align with unpacked nops rather than zeros. */ 2971 #define ASM_OUTPUT_ALIGN_WITH_NOP(STREAM, POWER) \ 2972 fprintf ((STREAM), "\t.p2alignl %d,0x80880000\n", (POWER)) 2973 2974 /* Macros Affecting all Debug Formats. */ 2975 2976 /* A C expression that returns the DBX register number for the compiler 2977 register number REGNO. In simple cases, the value of this expression may be 2978 REGNO itself. But sometimes there are some registers that the compiler 2979 knows about and DBX does not, or vice versa. In such cases, some register 2980 may need to have one number in the compiler and another for DBX. 2981 2982 If two registers have consecutive numbers inside GCC, and they can be 2983 used as a pair to hold a multiword value, then they *must* have consecutive 2984 numbers after renumbering with `DBX_REGISTER_NUMBER'. Otherwise, debuggers 2985 will be unable to access such a pair, because they expect register pairs to 2986 be consecutive in their own numbering scheme. 2987 2988 If you find yourself defining `DBX_REGISTER_NUMBER' in way that does not 2989 preserve register pairs, then what you must do instead is redefine the 2990 actual register numbering scheme. 2991 2992 This declaration is required. */ 2993 #define DBX_REGISTER_NUMBER(REGNO) (REGNO) 2994 2995 /* A C expression that returns the type of debugging output GCC produces 2996 when the user specifies `-g' or `-ggdb'. Define this if you have arranged 2997 for GCC to support more than one format of debugging output. Currently, 2998 the allowable values are `DBX_DEBUG', `SDB_DEBUG', `DWARF_DEBUG', 2999 `DWARF2_DEBUG', and `XCOFF_DEBUG'. 3000 3001 The value of this macro only affects the default debugging output; the user 3002 can always get a specific type of output by using `-gstabs', `-gcoff', 3003 `-gdwarf-1', `-gdwarf-2', or `-gxcoff'. 3004 3005 Defined in svr4.h. */ 3006 #undef PREFERRED_DEBUGGING_TYPE 3007 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 3008 3009 /* Miscellaneous Parameters. */ 3010 3011 /* Define this if you have defined special-purpose predicates in the file 3012 `MACHINE.c'. This macro is called within an initializer of an array of 3013 structures. The first field in the structure is the name of a predicate and 3014 the second field is an array of rtl codes. For each predicate, list all rtl 3015 codes that can be in expressions matched by the predicate. The list should 3016 have a trailing comma. Here is an example of two entries in the list for a 3017 typical RISC machine: 3018 3019 #define PREDICATE_CODES \ 3020 {"gen_reg_rtx_operand", {SUBREG, REG}}, \ 3021 {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}}, 3022 3023 Defining this macro does not affect the generated code (however, incorrect 3024 definitions that omit an rtl code that may be matched by the predicate can 3025 cause the compiler to malfunction). Instead, it allows the table built by 3026 `genrecog' to be more compact and efficient, thus speeding up the compiler. 3027 The most important predicates to include in the list specified by this macro 3028 are thoses used in the most insn patterns. */ 3029 #define PREDICATE_CODES \ 3030 { "integer_register_operand", { REG, SUBREG }}, \ 3031 { "frv_load_operand", { REG, SUBREG, MEM }}, \ 3032 { "gpr_no_subreg_operand", { REG }}, \ 3033 { "gpr_or_fpr_operand", { REG, SUBREG }}, \ 3034 { "gpr_or_int12_operand", { REG, SUBREG, CONST_INT }}, \ 3035 { "gpr_fpr_or_int12_operand", { REG, SUBREG, CONST_INT }}, \ 3036 { "gpr_or_int10_operand", { REG, SUBREG, CONST_INT }}, \ 3037 { "gpr_or_int_operand", { REG, SUBREG, CONST_INT }}, \ 3038 { "move_source_operand", { REG, SUBREG, CONST_INT, MEM, \ 3039 CONST_DOUBLE, CONST, \ 3040 SYMBOL_REF, LABEL_REF }}, \ 3041 { "move_destination_operand", { REG, SUBREG, MEM }}, \ 3042 { "condexec_source_operand", { REG, SUBREG, CONST_INT, MEM, \ 3043 CONST_DOUBLE }}, \ 3044 { "condexec_dest_operand", { REG, SUBREG, MEM }}, \ 3045 { "reg_or_0_operand", { REG, SUBREG, CONST_INT }}, \ 3046 { "lr_operand", { REG }}, \ 3047 { "gpr_or_memory_operand", { REG, SUBREG, MEM }}, \ 3048 { "fpr_or_memory_operand", { REG, SUBREG, MEM }}, \ 3049 { "int12_operand", { CONST_INT }}, \ 3050 { "int_2word_operand", { CONST_INT, CONST_DOUBLE, \ 3051 SYMBOL_REF, LABEL_REF, CONST }}, \ 3052 { "pic_register_operand", { REG }}, \ 3053 { "pic_symbolic_operand", { SYMBOL_REF, LABEL_REF, CONST }}, \ 3054 { "small_data_register_operand", { REG }}, \ 3055 { "small_data_symbolic_operand", { SYMBOL_REF, CONST }}, \ 3056 { "icc_operand", { REG }}, \ 3057 { "fcc_operand", { REG }}, \ 3058 { "cc_operand", { REG }}, \ 3059 { "icr_operand", { REG }}, \ 3060 { "fcr_operand", { REG }}, \ 3061 { "cr_operand", { REG }}, \ 3062 { "fpr_operand", { REG, SUBREG }}, \ 3063 { "even_reg_operand", { REG, SUBREG }}, \ 3064 { "odd_reg_operand", { REG, SUBREG }}, \ 3065 { "even_gpr_operand", { REG, SUBREG }}, \ 3066 { "odd_gpr_operand", { REG, SUBREG }}, \ 3067 { "quad_fpr_operand", { REG, SUBREG }}, \ 3068 { "even_fpr_operand", { REG, SUBREG }}, \ 3069 { "odd_fpr_operand", { REG, SUBREG }}, \ 3070 { "dbl_memory_one_insn_operand", { MEM }}, \ 3071 { "dbl_memory_two_insn_operand", { MEM }}, \ 3072 { "call_operand", { REG, SUBREG, PLUS, CONST_INT, \ 3073 SYMBOL_REF, LABEL_REF, CONST }}, \ 3074 { "upper_int16_operand", { CONST_INT }}, \ 3075 { "uint16_operand", { CONST_INT }}, \ 3076 { "relational_operator", { EQ, NE, LE, LT, GE, GT, \ 3077 LEU, LTU, GEU, GTU }}, \ 3078 { "signed_relational_operator", { EQ, NE, LE, LT, GE, GT }}, \ 3079 { "unsigned_relational_operator", { LEU, LTU, GEU, GTU }}, \ 3080 { "float_relational_operator", { EQ, NE, LE, LT, GE, GT }}, \ 3081 { "ccr_eqne_operator", { EQ, NE }}, \ 3082 { "minmax_operator", { SMIN, SMAX, UMIN, UMAX }}, \ 3083 { "condexec_si_binary_operator", { PLUS, MINUS, AND, IOR, XOR, \ 3084 ASHIFT, ASHIFTRT, LSHIFTRT }}, \ 3085 { "condexec_si_media_operator", { AND, IOR, XOR }}, \ 3086 { "condexec_si_divide_operator", { DIV, UDIV }}, \ 3087 { "condexec_si_unary_operator", { NOT, NEG }}, \ 3088 { "condexec_sf_add_operator", { PLUS, MINUS }}, \ 3089 { "condexec_sf_conv_operator", { ABS, NEG }}, \ 3090 { "intop_compare_operator", { PLUS, MINUS, AND, IOR, XOR, \ 3091 ASHIFT, ASHIFTRT, LSHIFTRT }}, \ 3092 { "condexec_intop_cmp_operator", { PLUS, MINUS, AND, IOR, XOR, \ 3093 ASHIFT, ASHIFTRT, LSHIFTRT }}, \ 3094 { "fpr_or_int6_operand", { REG, SUBREG, CONST_INT }}, \ 3095 { "int6_operand", { CONST_INT }}, \ 3096 { "int5_operand", { CONST_INT }}, \ 3097 { "uint5_operand", { CONST_INT }}, \ 3098 { "uint4_operand", { CONST_INT }}, \ 3099 { "uint1_operand", { CONST_INT }}, \ 3100 { "acc_operand", { REG, SUBREG }}, \ 3101 { "even_acc_operand", { REG, SUBREG }}, \ 3102 { "quad_acc_operand", { REG, SUBREG }}, \ 3103 { "accg_operand", { REG, SUBREG }}, 3104 3105 /* An alias for a machine mode name. This is the machine mode that elements of 3106 a jump-table should have. */ 3107 #define CASE_VECTOR_MODE SImode 3108 3109 /* Define this macro if operations between registers with integral mode smaller 3110 than a word are always performed on the entire register. Most RISC machines 3111 have this property and most CISC machines do not. */ 3112 #define WORD_REGISTER_OPERATIONS 3113 3114 /* Define this macro to be a C expression indicating when insns that read 3115 memory in MODE, an integral mode narrower than a word, set the bits outside 3116 of MODE to be either the sign-extension or the zero-extension of the data 3117 read. Return `SIGN_EXTEND' for values of MODE for which the insn 3118 sign-extends, `ZERO_EXTEND' for which it zero-extends, and `NIL' for other 3119 modes. 3120 3121 This macro is not called with MODE non-integral or with a width greater than 3122 or equal to `BITS_PER_WORD', so you may return any value in this case. Do 3123 not define this macro if it would always return `NIL'. On machines where 3124 this macro is defined, you will normally define it as the constant 3125 `SIGN_EXTEND' or `ZERO_EXTEND'. */ 3126 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND 3127 3128 /* Define if loading short immediate values into registers sign extends. */ 3129 #define SHORT_IMMEDIATES_SIGN_EXTEND 3130 3131 /* The maximum number of bytes that a single instruction can move quickly from 3132 memory to memory. */ 3133 #define MOVE_MAX 8 3134 3135 /* A C expression which is nonzero if on this machine it is safe to "convert" 3136 an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller 3137 than INPREC) by merely operating on it as if it had only OUTPREC bits. 3138 3139 On many machines, this expression can be 1. 3140 3141 When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for 3142 which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the 3143 case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve 3144 things. */ 3145 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 3146 3147 /* An alias for the machine mode for pointers. On most machines, define this 3148 to be the integer mode corresponding to the width of a hardware pointer; 3149 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines 3150 you must define this to be one of the partial integer modes, such as 3151 `PSImode'. 3152 3153 The width of `Pmode' must be at least as large as the value of 3154 `POINTER_SIZE'. If it is not equal, you must define the macro 3155 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */ 3156 #define Pmode SImode 3157 3158 /* An alias for the machine mode used for memory references to functions being 3159 called, in `call' RTL expressions. On most machines this should be 3160 `QImode'. */ 3161 #define FUNCTION_MODE QImode 3162 3163 /* Define this macro to handle System V style pragmas: #pragma pack and 3164 #pragma weak. Note, #pragma weak will only be supported if SUPPORT_WEAK is 3165 defined. 3166 3167 Defined in svr4.h. */ 3168 #define HANDLE_SYSV_PRAGMA 1 3169 3170 /* A C expression for the maximum number of instructions to execute via 3171 conditional execution instructions instead of a branch. A value of 3172 BRANCH_COST+1 is the default if the machine does not use 3173 cc0, and 1 if it does use cc0. */ 3174 #define MAX_CONDITIONAL_EXECUTE frv_condexec_insns 3175 3176 /* Default value of MAX_CONDITIONAL_EXECUTE if no -mcond-exec-insns= */ 3177 #define DEFAULT_CONDEXEC_INSNS 8 3178 3179 /* A C expression to modify the code described by the conditional if 3180 information CE_INFO, possibly updating the tests in TRUE_EXPR, and 3181 FALSE_EXPR for converting if-then and if-then-else code to conditional 3182 instructions. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if the 3183 tests cannot be converted. */ 3184 #define IFCVT_MODIFY_TESTS(CE_INFO, TRUE_EXPR, FALSE_EXPR) \ 3185 frv_ifcvt_modify_tests (CE_INFO, &TRUE_EXPR, &FALSE_EXPR) 3186 3187 /* A C expression to modify the code described by the conditional if 3188 information CE_INFO, for the basic block BB, possibly updating the tests in 3189 TRUE_EXPR, and FALSE_EXPR for converting the && and || parts of if-then or 3190 if-then-else code to conditional instructions. OLD_TRUE and OLD_FALSE are 3191 the previous tests. Set either TRUE_EXPR or FALSE_EXPR to a null pointer if 3192 the tests cannot be converted. */ 3193 #define IFCVT_MODIFY_MULTIPLE_TESTS(CE_INFO, BB, TRUE_EXPR, FALSE_EXPR) \ 3194 frv_ifcvt_modify_multiple_tests (CE_INFO, BB, &TRUE_EXPR, &FALSE_EXPR) 3195 3196 /* A C expression to modify the code described by the conditional if 3197 information CE_INFO with the new PATTERN in INSN. If PATTERN is a null 3198 pointer after the IFCVT_MODIFY_INSN macro executes, it is assumed that that 3199 insn cannot be converted to be executed conditionally. */ 3200 #define IFCVT_MODIFY_INSN(CE_INFO, PATTERN, INSN) \ 3201 (PATTERN) = frv_ifcvt_modify_insn (CE_INFO, PATTERN, INSN) 3202 3203 /* A C expression to perform any final machine dependent modifications in 3204 converting code to conditional execution in the code described by the 3205 conditional if information CE_INFO. */ 3206 #define IFCVT_MODIFY_FINAL(CE_INFO) frv_ifcvt_modify_final (CE_INFO) 3207 3208 /* A C expression to cancel any machine dependent modifications in converting 3209 code to conditional execution in the code described by the conditional if 3210 information CE_INFO. */ 3211 #define IFCVT_MODIFY_CANCEL(CE_INFO) frv_ifcvt_modify_cancel (CE_INFO) 3212 3213 /* Initialize the extra fields provided by IFCVT_EXTRA_FIELDS. */ 3214 #define IFCVT_INIT_EXTRA_FIELDS(CE_INFO) frv_ifcvt_init_extra_fields (CE_INFO) 3215 3216 /* Indicate how many instructions can be issued at the same time. */ 3217 #define ISSUE_RATE \ 3218 (! TARGET_PACK ? 1 \ 3219 : (frv_cpu_type == FRV_CPU_GENERIC \ 3220 || frv_cpu_type == FRV_CPU_FR500 \ 3221 || frv_cpu_type == FRV_CPU_TOMCAT) ? 4 \ 3222 : frv_cpu_type == FRV_CPU_FR400 ? 2 : 1) 3223 3224 /* Set and clear whether this insn begins a VLIW insn. */ 3225 #define CLEAR_VLIW_START(INSN) PUT_MODE (INSN, VOIDmode) 3226 #define SET_VLIW_START(INSN) PUT_MODE (INSN, TImode) 3227 3228 /* The definition of the following macro results in that the 2nd jump 3229 optimization (after the 2nd insn scheduling) is minimal. It is 3230 necessary to define when start cycle marks of insns (TImode is used 3231 for this) is used for VLIW insn packing. Some jump optimizations 3232 make such marks invalid. These marks are corrected for some 3233 (minimal) optimizations. ??? Probably the macro is temporary. 3234 Final solution could making the 2nd jump optimizations before the 3235 2nd instruction scheduling or corrections of the marks for all jump 3236 optimizations. Although some jump optimizations are actually 3237 deoptimizations for VLIW (super-scalar) processors. */ 3238 3239 #define MINIMAL_SECOND_JUMP_OPTIMIZATION 3240 3241 /* Return true if parallel operations are expected to be emitted via the 3242 packing flag. */ 3243 #define PACKING_FLAG_USED_P() \ 3244 (optimize && flag_schedule_insns_after_reload && ISSUE_RATE > 1) 3245 3246 /* If the following macro is defined and nonzero and deterministic 3247 finite state automata are used for pipeline hazard recognition, the 3248 code making resource-constrained software pipelining is on. */ 3249 #define RCSP_SOFTWARE_PIPELINING 1 3250 3251 /* If the following macro is defined and nonzero and deterministic 3252 finite state automata are used for pipeline hazard recognition, we 3253 will try to exchange insns in queue ready to improve the schedule. 3254 The more macro value, the more tries will be made. */ 3255 #define FIRST_CYCLE_MULTIPASS_SCHEDULING 1 3256 3257 /* The following macro is used only when value of 3258 FIRST_CYCLE_MULTIPASS_SCHEDULING is nonzero. The more macro value, 3259 the more tries will be made to choose better schedule. If the 3260 macro value is zero or negative there will be no multi-pass 3261 scheduling. */ 3262 #define FIRST_CYCLE_MULTIPASS_SCHEDULING_LOOKAHEAD frv_sched_lookahead 3263 3264 enum frv_builtins 3265 { 3266 FRV_BUILTIN_MAND, 3267 FRV_BUILTIN_MOR, 3268 FRV_BUILTIN_MXOR, 3269 FRV_BUILTIN_MNOT, 3270 FRV_BUILTIN_MAVEH, 3271 FRV_BUILTIN_MSATHS, 3272 FRV_BUILTIN_MSATHU, 3273 FRV_BUILTIN_MADDHSS, 3274 FRV_BUILTIN_MADDHUS, 3275 FRV_BUILTIN_MSUBHSS, 3276 FRV_BUILTIN_MSUBHUS, 3277 FRV_BUILTIN_MPACKH, 3278 FRV_BUILTIN_MQADDHSS, 3279 FRV_BUILTIN_MQADDHUS, 3280 FRV_BUILTIN_MQSUBHSS, 3281 FRV_BUILTIN_MQSUBHUS, 3282 FRV_BUILTIN_MUNPACKH, 3283 FRV_BUILTIN_MDPACKH, 3284 FRV_BUILTIN_MBTOH, 3285 FRV_BUILTIN_MHTOB, 3286 FRV_BUILTIN_MCOP1, 3287 FRV_BUILTIN_MCOP2, 3288 FRV_BUILTIN_MROTLI, 3289 FRV_BUILTIN_MROTRI, 3290 FRV_BUILTIN_MWCUT, 3291 FRV_BUILTIN_MSLLHI, 3292 FRV_BUILTIN_MSRLHI, 3293 FRV_BUILTIN_MSRAHI, 3294 FRV_BUILTIN_MEXPDHW, 3295 FRV_BUILTIN_MEXPDHD, 3296 FRV_BUILTIN_MMULHS, 3297 FRV_BUILTIN_MMULHU, 3298 FRV_BUILTIN_MMULXHS, 3299 FRV_BUILTIN_MMULXHU, 3300 FRV_BUILTIN_MMACHS, 3301 FRV_BUILTIN_MMACHU, 3302 FRV_BUILTIN_MMRDHS, 3303 FRV_BUILTIN_MMRDHU, 3304 FRV_BUILTIN_MQMULHS, 3305 FRV_BUILTIN_MQMULHU, 3306 FRV_BUILTIN_MQMULXHU, 3307 FRV_BUILTIN_MQMULXHS, 3308 FRV_BUILTIN_MQMACHS, 3309 FRV_BUILTIN_MQMACHU, 3310 FRV_BUILTIN_MCPXRS, 3311 FRV_BUILTIN_MCPXRU, 3312 FRV_BUILTIN_MCPXIS, 3313 FRV_BUILTIN_MCPXIU, 3314 FRV_BUILTIN_MQCPXRS, 3315 FRV_BUILTIN_MQCPXRU, 3316 FRV_BUILTIN_MQCPXIS, 3317 FRV_BUILTIN_MQCPXIU, 3318 FRV_BUILTIN_MCUT, 3319 FRV_BUILTIN_MCUTSS, 3320 FRV_BUILTIN_MWTACC, 3321 FRV_BUILTIN_MWTACCG, 3322 FRV_BUILTIN_MRDACC, 3323 FRV_BUILTIN_MRDACCG, 3324 FRV_BUILTIN_MTRAP, 3325 FRV_BUILTIN_MCLRACC, 3326 FRV_BUILTIN_MCLRACCA, 3327 FRV_BUILTIN_MDUNPACKH, 3328 FRV_BUILTIN_MBTOHE, 3329 FRV_BUILTIN_MQXMACHS, 3330 FRV_BUILTIN_MQXMACXHS, 3331 FRV_BUILTIN_MQMACXHS, 3332 FRV_BUILTIN_MADDACCS, 3333 FRV_BUILTIN_MSUBACCS, 3334 FRV_BUILTIN_MASACCS, 3335 FRV_BUILTIN_MDADDACCS, 3336 FRV_BUILTIN_MDSUBACCS, 3337 FRV_BUILTIN_MDASACCS, 3338 FRV_BUILTIN_MABSHS, 3339 FRV_BUILTIN_MDROTLI, 3340 FRV_BUILTIN_MCPLHI, 3341 FRV_BUILTIN_MCPLI, 3342 FRV_BUILTIN_MDCUTSSI, 3343 FRV_BUILTIN_MQSATHS, 3344 FRV_BUILTIN_MHSETLOS, 3345 FRV_BUILTIN_MHSETLOH, 3346 FRV_BUILTIN_MHSETHIS, 3347 FRV_BUILTIN_MHSETHIH, 3348 FRV_BUILTIN_MHDSETS, 3349 FRV_BUILTIN_MHDSETH 3350 }; 3351 3352 /* Enable prototypes on the call rtl functions. */ 3353 #define MD_CALL_PROTOTYPES 1 3354 3355 extern GTY(()) rtx frv_compare_op0; /* operand save for */ 3356 extern GTY(()) rtx frv_compare_op1; /* comparison generation */ 3357 3358 #endif /* __FRV_H__ */ 3359