Mercurial > hg > CbC > CbC_gcc
annotate gcc/config/fr30/fr30.h @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | 04ced10e8804 |
| children | 1830386684a0 |
| rev | line source |
|---|---|
| 0 | 1 /*{{{ Comment. */ |
| 2 | |
| 3 /* Definitions of FR30 target. | |
| 131 | 4 Copyright (C) 1998-2018 Free Software Foundation, Inc. |
| 0 | 5 Contributed by Cygnus Solutions. |
| 6 | |
| 7 This file is part of GCC. | |
| 8 | |
| 9 GCC is free software; you can redistribute it and/or modify | |
| 10 it under the terms of the GNU General Public License as published by | |
| 11 the Free Software Foundation; either version 3, or (at your option) | |
| 12 any later version. | |
| 13 | |
| 14 GCC is distributed in the hope that it will be useful, | |
| 15 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 GNU General Public License for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with GCC; see the file COPYING3. If not see | |
| 21 <http://www.gnu.org/licenses/>. */ | |
| 22 | |
| 23 /*}}}*/ | |
| 24 /*{{{ Run-time target specifications. */ | |
| 25 | |
| 26 #undef ASM_SPEC | |
|
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27 #define ASM_SPEC "" |
| 0 | 28 |
| 29 /* Define this to be a string constant containing `-D' options to define the | |
| 30 predefined macros that identify this machine and system. These macros will | |
| 31 be predefined unless the `-ansi' option is specified. */ | |
| 32 | |
| 33 #define TARGET_CPU_CPP_BUILTINS() \ | |
| 34 do \ | |
| 35 { \ | |
| 36 builtin_define_std ("fr30"); \ | |
| 37 builtin_assert ("machine=fr30"); \ | |
| 38 } \ | |
| 39 while (0) | |
| 40 | |
| 41 #undef STARTFILE_SPEC | |
| 42 #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s" | |
| 43 | |
| 44 /* Include the OS stub library, so that the code can be simulated. | |
| 45 This is not the right way to do this. Ideally this kind of thing | |
| 46 should be done in the linker script - but I have not worked out how | |
| 47 to specify the location of a linker script in a gcc command line yet... */ | |
| 48 #undef ENDFILE_SPEC | |
| 49 #define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s" | |
| 50 | |
|
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51 #undef LIB_SPEC |
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52 #define LIB_SPEC "-lc" |
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53 |
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54 #undef LINK_SPEC |
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55 #define LINK_SPEC "%{h*} %{v:-V} \ |
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56 %{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic}" |
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57 |
| 0 | 58 /*}}}*/ |
| 59 /*{{{ Storage Layout. */ | |
| 60 | |
| 61 #define BITS_BIG_ENDIAN 1 | |
| 62 | |
| 63 #define BYTES_BIG_ENDIAN 1 | |
| 64 | |
| 65 #define WORDS_BIG_ENDIAN 1 | |
| 66 | |
| 67 #define UNITS_PER_WORD 4 | |
| 68 | |
| 69 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ | |
| 70 do \ | |
| 71 { \ | |
| 72 if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
| 73 && GET_MODE_SIZE (MODE) < 4) \ | |
| 74 (MODE) = SImode; \ | |
| 75 } \ | |
| 76 while (0) | |
| 77 | |
| 78 #define PARM_BOUNDARY 32 | |
| 79 | |
| 80 #define STACK_BOUNDARY 32 | |
| 81 | |
| 82 #define FUNCTION_BOUNDARY 32 | |
| 83 | |
| 84 #define BIGGEST_ALIGNMENT 32 | |
| 85 | |
| 86 #define DATA_ALIGNMENT(TYPE, ALIGN) \ | |
| 87 (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
| 88 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ | |
| 89 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) | |
| 90 | |
| 91 #define STRICT_ALIGNMENT 1 | |
| 92 | |
| 93 #define PCC_BITFIELD_TYPE_MATTERS 1 | |
| 94 | |
| 95 /*}}}*/ | |
| 96 /*{{{ Layout of Source Language Data Types. */ | |
| 97 | |
| 98 #define SHORT_TYPE_SIZE 16 | |
| 99 #define INT_TYPE_SIZE 32 | |
| 100 #define LONG_TYPE_SIZE 32 | |
| 101 #define LONG_LONG_TYPE_SIZE 64 | |
| 102 #define FLOAT_TYPE_SIZE 32 | |
| 103 #define DOUBLE_TYPE_SIZE 64 | |
| 104 #define LONG_DOUBLE_TYPE_SIZE 64 | |
| 105 | |
| 106 #define DEFAULT_SIGNED_CHAR 1 | |
| 107 | |
|
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108 #undef SIZE_TYPE |
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109 #define SIZE_TYPE "unsigned int" |
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110 |
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111 #undef PTRDIFF_TYPE |
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112 #define PTRDIFF_TYPE "int" |
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113 |
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114 #undef WCHAR_TYPE |
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115 #define WCHAR_TYPE "long int" |
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116 |
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117 #undef WCHAR_TYPE_SIZE |
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118 #define WCHAR_TYPE_SIZE BITS_PER_WORD |
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119 |
| 0 | 120 /*}}}*/ |
| 121 /*{{{ REGISTER BASICS. */ | |
| 122 | |
| 123 /* Number of hardware registers known to the compiler. They receive numbers 0 | |
| 124 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number | |
| 125 really is assigned the number `FIRST_PSEUDO_REGISTER'. */ | |
| 126 #define FIRST_PSEUDO_REGISTER 21 | |
| 127 | |
| 128 /* Fixed register assignments: */ | |
| 129 | |
| 130 /* Here we do a BAD THING - reserve a register for use by the machine | |
| 131 description file. There are too many places in compiler where it | |
| 132 assumes that it can issue a branch or jump instruction without | |
| 133 providing a scratch register for it, and reload just cannot cope, so | |
| 134 we keep a register back for these situations. */ | |
| 135 #define COMPILER_SCRATCH_REGISTER 0 | |
| 136 | |
| 137 /* The register that contains the result of a function call. */ | |
| 138 #define RETURN_VALUE_REGNUM 4 | |
| 139 | |
| 140 /* The first register that can contain the arguments to a function. */ | |
| 141 #define FIRST_ARG_REGNUM 4 | |
| 142 | |
| 143 /* A call-used register that can be used during the function prologue. */ | |
| 144 #define PROLOGUE_TMP_REGNUM COMPILER_SCRATCH_REGISTER | |
| 145 | |
| 146 /* Register numbers used for passing a function's static chain pointer. If | |
| 147 register windows are used, the register number as seen by the called | |
| 148 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as | |
| 149 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers | |
| 150 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. | |
| 151 | |
| 152 The static chain register need not be a fixed register. | |
| 153 | |
| 154 If the static chain is passed in memory, these macros should not be defined; | |
| 155 instead, the next two macros should be defined. */ | |
| 156 #define STATIC_CHAIN_REGNUM 12 | |
| 157 /* #define STATIC_CHAIN_INCOMING_REGNUM */ | |
| 158 | |
| 159 /* An FR30 specific hardware register. */ | |
| 160 #define ACCUMULATOR_REGNUM 13 | |
| 161 | |
| 162 /* The register number of the frame pointer register, which is used to access | |
| 163 automatic variables in the stack frame. On some machines, the hardware | |
| 164 determines which register this is. On other machines, you can choose any | |
| 165 register you wish for this purpose. */ | |
| 166 #define FRAME_POINTER_REGNUM 14 | |
| 167 | |
| 168 /* The register number of the stack pointer register, which must also be a | |
| 169 fixed register according to `FIXED_REGISTERS'. On most machines, the | |
| 170 hardware determines which register this is. */ | |
| 171 #define STACK_POINTER_REGNUM 15 | |
| 172 | |
| 173 /* The following a fake hard registers that describe some of the dedicated | |
| 174 registers on the FR30. */ | |
| 175 #define CONDITION_CODE_REGNUM 16 | |
| 176 #define RETURN_POINTER_REGNUM 17 | |
| 177 #define MD_HIGH_REGNUM 18 | |
| 178 #define MD_LOW_REGNUM 19 | |
| 179 | |
| 180 /* An initializer that says which registers are used for fixed purposes all | |
| 181 throughout the compiled code and are therefore not available for general | |
| 182 allocation. These would include the stack pointer, the frame pointer | |
| 183 (except on machines where that can be used as a general register when no | |
| 184 frame pointer is needed), the program counter on machines where that is | |
| 185 considered one of the addressable registers, and any other numbered register | |
| 186 with a standard use. | |
| 187 | |
| 188 This information is expressed as a sequence of numbers, separated by commas | |
| 189 and surrounded by braces. The Nth number is 1 if register N is fixed, 0 | |
| 190 otherwise. | |
| 191 | |
| 192 The table initialized from this macro, and the table initialized by the | |
| 193 following one, may be overridden at run time either automatically, by the | |
|
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194 actions of the macro `TARGET_CONDITIONAL_REGISTER_USAGE', or by the user |
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195 with the command options `-ffixed-REG', `-fcall-used-REG' and |
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196 `-fcall-saved-REG'. */ |
| 0 | 197 #define FIXED_REGISTERS \ |
| 198 { 1, 0, 0, 0, 0, 0, 0, 0, /* 0 - 7 */ \ | |
| 199 0, 0, 0, 0, 0, 0, 0, 1, /* 8 - 15 */ \ | |
| 200 1, 1, 1, 1, 1 } /* 16 - 20 */ | |
| 201 | |
| 202 /* XXX - MDL and MDH set as fixed for now - this is until I can get the | |
| 203 mul patterns working. */ | |
| 204 | |
| 205 /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in | |
| 206 general) by function calls as well as for fixed registers. This macro | |
| 207 therefore identifies the registers that are not available for general | |
| 208 allocation of values that must live across function calls. | |
| 209 | |
| 210 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically | |
| 211 saves it on function entry and restores it on function exit, if the register | |
| 212 is used within the function. */ | |
| 213 #define CALL_USED_REGISTERS \ | |
| 214 { 1, 1, 1, 1, 1, 1, 1, 1, /* 0 - 7 */ \ | |
| 215 0, 0, 0, 0, 1, 1, 0, 1, /* 8 - 15 */ \ | |
| 216 1, 1, 1, 1, 1 } /* 16 - 20 */ | |
| 217 | |
| 218 /* A C initializer containing the assembler's names for the machine registers, | |
| 219 each one as a C string constant. This is what translates register numbers | |
| 220 in the compiler into assembler language. */ | |
| 221 #define REGISTER_NAMES \ | |
| 222 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
| 223 "r8", "r9", "r10", "r11", "r12", "ac", "fp", "sp", \ | |
| 224 "cc", "rp", "mdh", "mdl", "ap" \ | |
| 225 } | |
| 226 | |
| 227 /* If defined, a C initializer for an array of structures containing a name and | |
| 228 a register number. This macro defines additional names for hard registers, | |
| 229 thus allowing the `asm' option in declarations to refer to registers using | |
| 230 alternate names. */ | |
| 231 #define ADDITIONAL_REGISTER_NAMES \ | |
| 232 { \ | |
| 233 {"r13", 13}, {"r14", 14}, {"r15", 15}, {"usp", 15}, {"ps", 16}\ | |
| 234 } | |
| 235 | |
| 236 /*}}}*/ | |
| 237 /*{{{ Register Classes. */ | |
| 238 | |
| 239 /* An enumeral type that must be defined with all the register class names as | |
| 240 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last | |
| 241 register class, followed by one more enumeral value, `LIM_REG_CLASSES', | |
| 242 which is not a register class but rather tells how many classes there are. | |
| 243 | |
| 244 Each register class has a number, which is the value of casting the class | |
| 245 name to type `int'. The number serves as an index in many of the tables | |
| 246 described below. */ | |
| 247 enum reg_class | |
| 248 { | |
| 249 NO_REGS, | |
| 250 MULTIPLY_32_REG, /* the MDL register as used by the MULH, MULUH insns */ | |
| 251 MULTIPLY_64_REG, /* the MDH,MDL register pair as used by MUL and MULU */ | |
| 252 LOW_REGS, /* registers 0 through 7 */ | |
| 253 HIGH_REGS, /* registers 8 through 15 */ | |
| 254 REAL_REGS, /* i.e. all the general hardware registers on the FR30 */ | |
| 255 ALL_REGS, | |
| 256 LIM_REG_CLASSES | |
| 257 }; | |
| 258 | |
| 259 #define GENERAL_REGS REAL_REGS | |
| 260 #define N_REG_CLASSES ((int) LIM_REG_CLASSES) | |
| 261 | |
| 262 /* An initializer containing the names of the register classes as C string | |
| 263 constants. These names are used in writing some of the debugging dumps. */ | |
| 264 #define REG_CLASS_NAMES \ | |
| 265 { \ | |
| 266 "NO_REGS", \ | |
| 267 "MULTIPLY_32_REG", \ | |
| 268 "MULTIPLY_64_REG", \ | |
| 269 "LOW_REGS", \ | |
| 270 "HIGH_REGS", \ | |
| 271 "REAL_REGS", \ | |
| 272 "ALL_REGS" \ | |
| 273 } | |
| 274 | |
| 275 /* An initializer containing the contents of the register classes, as integers | |
| 276 which are bit masks. The Nth integer specifies the contents of class N. | |
| 277 The way the integer MASK is interpreted is that register R is in the class | |
| 278 if `MASK & (1 << R)' is 1. | |
| 279 | |
| 280 When the machine has more than 32 registers, an integer does not suffice. | |
| 281 Then the integers are replaced by sub-initializers, braced groupings | |
| 282 containing several integers. Each sub-initializer must be suitable as an | |
| 283 initializer for the type `HARD_REG_SET' which is defined in | |
| 284 `hard-reg-set.h'. */ | |
| 285 #define REG_CLASS_CONTENTS \ | |
| 286 { \ | |
| 287 { 0 }, \ | |
| 288 { 1 << MD_LOW_REGNUM }, \ | |
| 289 { (1 << MD_LOW_REGNUM) | (1 << MD_HIGH_REGNUM) }, \ | |
| 290 { (1 << 8) - 1 }, \ | |
| 291 { ((1 << 8) - 1) << 8 }, \ | |
| 292 { (1 << CONDITION_CODE_REGNUM) - 1 }, \ | |
| 293 { (1 << FIRST_PSEUDO_REGISTER) - 1 } \ | |
| 294 } | |
| 295 | |
| 296 /* A C expression whose value is a register class containing hard register | |
| 297 REGNO. In general there is more than one such class; choose a class which | |
| 298 is "minimal", meaning that no smaller class also contains the register. */ | |
| 299 #define REGNO_REG_CLASS(REGNO) \ | |
| 300 ( (REGNO) < 8 ? LOW_REGS \ | |
| 301 : (REGNO) < CONDITION_CODE_REGNUM ? HIGH_REGS \ | |
| 302 : (REGNO) == MD_LOW_REGNUM ? MULTIPLY_32_REG \ | |
| 303 : (REGNO) == MD_HIGH_REGNUM ? MULTIPLY_64_REG \ | |
| 304 : ALL_REGS) | |
| 305 | |
| 306 /* A macro whose definition is the name of the class to which a valid base | |
| 307 register must belong. A base register is one used in an address which is | |
| 308 the register value plus a displacement. */ | |
| 309 #define BASE_REG_CLASS REAL_REGS | |
| 310 | |
| 311 /* A macro whose definition is the name of the class to which a valid index | |
| 312 register must belong. An index register is one used in an address where its | |
| 313 value is either multiplied by a scale factor or added to another register | |
| 314 (as well as added to a displacement). */ | |
| 315 #define INDEX_REG_CLASS REAL_REGS | |
| 316 | |
| 317 /* A C expression which is nonzero if register number NUM is suitable for use | |
| 318 as a base register in operand addresses. It may be either a suitable hard | |
| 319 register or a pseudo register that has been allocated such a hard register. */ | |
| 320 #define REGNO_OK_FOR_BASE_P(NUM) 1 | |
| 321 | |
| 322 /* A C expression which is nonzero if register number NUM is suitable for use | |
| 323 as an index register in operand addresses. It may be either a suitable hard | |
| 324 register or a pseudo register that has been allocated such a hard register. | |
| 325 | |
| 326 The difference between an index register and a base register is that the | |
| 327 index register may be scaled. If an address involves the sum of two | |
| 328 registers, neither one of them scaled, then either one may be labeled the | |
| 329 "base" and the other the "index"; but whichever labeling is used must fit | |
| 330 the machine's constraints of which registers may serve in each capacity. | |
| 331 The compiler will try both labelings, looking for one that is valid, and | |
| 332 will reload one or both registers only if neither labeling works. */ | |
| 333 #define REGNO_OK_FOR_INDEX_P(NUM) 1 | |
| 334 | |
| 111 | 335 #define CLASS_MAX_NREGS(CLASS, MODE) targetm.hard_regno_nregs (0, MODE) |
| 0 | 336 |
| 337 /*}}}*/ | |
| 338 /*{{{ Basic Stack Layout. */ | |
| 339 | |
| 340 /* Define this macro if pushing a word onto the stack moves the stack pointer | |
| 341 to a smaller address. */ | |
| 342 #define STACK_GROWS_DOWNWARD 1 | |
| 343 | |
| 344 /* Define this to macro nonzero if the addresses of local variable slots | |
| 345 are at negative offsets from the frame pointer. */ | |
| 346 #define FRAME_GROWS_DOWNWARD 1 | |
| 347 | |
| 348 /* Offset from the stack pointer register to the first location at which | |
| 349 outgoing arguments are placed. If not specified, the default value of zero | |
| 350 is used. This is the proper value for most machines. | |
| 351 | |
| 352 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first | |
| 353 location at which outgoing arguments are placed. */ | |
| 354 #define STACK_POINTER_OFFSET 0 | |
| 355 | |
| 356 /* Offset from the argument pointer register to the first argument's address. | |
| 357 On some machines it may depend on the data type of the function. | |
| 358 | |
| 359 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first | |
| 360 argument's address. */ | |
| 361 #define FIRST_PARM_OFFSET(FUNDECL) 0 | |
| 362 | |
| 363 /* A C expression whose value is RTL representing the location of the incoming | |
| 364 return address at the beginning of any function, before the prologue. This | |
| 365 RTL is either a `REG', indicating that the return value is saved in `REG', | |
| 366 or a `MEM' representing a location in the stack. | |
| 367 | |
| 368 You only need to define this macro if you want to support call frame | |
| 369 debugging information like that provided by DWARF 2. */ | |
| 370 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM) | |
| 371 | |
| 372 /*}}}*/ | |
| 373 /*{{{ Register That Address the Stack Frame. */ | |
| 374 | |
| 375 /* The register number of the arg pointer register, which is used to access the | |
| 376 function's argument list. On some machines, this is the same as the frame | |
| 377 pointer register. On some machines, the hardware determines which register | |
| 378 this is. On other machines, you can choose any register you wish for this | |
| 379 purpose. If this is not the same register as the frame pointer register, | |
| 380 then you must mark it as a fixed register according to `FIXED_REGISTERS', or | |
| 381 arrange to be able to eliminate it. */ | |
| 382 #define ARG_POINTER_REGNUM 20 | |
| 383 | |
| 384 /*}}}*/ | |
| 385 /*{{{ Eliminating the Frame Pointer and the Arg Pointer. */ | |
| 386 | |
| 387 /* If defined, this macro specifies a table of register pairs used to eliminate | |
| 388 unneeded registers that point into the stack frame. If it is not defined, | |
| 389 the only elimination attempted by the compiler is to replace references to | |
| 390 the frame pointer with references to the stack pointer. | |
| 391 | |
| 392 The definition of this macro is a list of structure initializations, each of | |
| 393 which specifies an original and replacement register. | |
| 394 | |
| 395 On some machines, the position of the argument pointer is not known until | |
| 396 the compilation is completed. In such a case, a separate hard register must | |
| 397 be used for the argument pointer. This register can be eliminated by | |
| 398 replacing it with either the frame pointer or the argument pointer, | |
| 399 depending on whether or not the frame pointer has been eliminated. | |
| 400 | |
| 401 In this case, you might specify: | |
| 402 #define ELIMINABLE_REGS \ | |
| 403 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
| 404 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
| 405 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} | |
| 406 | |
| 407 Note that the elimination of the argument pointer with the stack pointer is | |
| 408 specified first since that is the preferred elimination. */ | |
| 409 | |
| 410 #define ELIMINABLE_REGS \ | |
| 411 { \ | |
| 412 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
| 413 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ | |
| 414 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ | |
| 415 } | |
| 416 | |
| 111 | 417 /* This macro returns the initial difference between the specified pair |
| 418 of registers. */ | |
| 0 | 419 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
| 420 (OFFSET) = fr30_compute_frame_size (FROM, TO) | |
| 421 | |
| 422 /*}}}*/ | |
| 423 /*{{{ Passing Function Arguments on the Stack. */ | |
| 424 | |
| 425 /* If defined, the maximum amount of space required for outgoing arguments will | |
| 426 be computed and placed into the variable | |
| 427 `crtl->outgoing_args_size'. No space will be pushed onto the | |
| 428 stack for each call; instead, the function prologue should increase the | |
| 429 stack frame size by this amount. | |
| 430 | |
| 431 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not | |
| 432 proper. */ | |
| 433 #define ACCUMULATE_OUTGOING_ARGS 1 | |
| 434 | |
| 435 /*}}}*/ | |
| 436 /*{{{ Function Arguments in Registers. */ | |
| 437 | |
| 438 /* The number of register assigned to holding function arguments. */ | |
| 439 | |
| 440 #define FR30_NUM_ARG_REGS 4 | |
| 441 | |
| 442 /* A C type for declaring a variable that is used as the first argument of | |
| 443 `FUNCTION_ARG' and other related values. For some target machines, the type | |
| 444 `int' suffices and can hold the number of bytes of argument so far. | |
| 445 | |
| 446 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments | |
| 447 that have been passed on the stack. The compiler has other variables to | |
| 448 keep track of that. For target machines on which all arguments are passed | |
| 449 on the stack, there is no need to store anything in `CUMULATIVE_ARGS'; | |
| 450 however, the data structure must exist and should not be empty, so use | |
| 451 `int'. */ | |
| 452 /* On the FR30 this value is an accumulating count of the number of argument | |
| 453 registers that have been filled with argument values, as opposed to say, | |
| 454 the number of bytes of argument accumulated so far. */ | |
| 455 #define CUMULATIVE_ARGS int | |
| 456 | |
| 457 /* A C statement (sans semicolon) for initializing the variable CUM for the | |
| 458 state at the beginning of the argument list. The variable has type | |
| 459 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type | |
| 460 of the function which will receive the args, or 0 if the args are to a | |
| 461 compiler support library function. The value of INDIRECT is nonzero when | |
| 462 processing an indirect call, for example a call through a function pointer. | |
| 463 The value of INDIRECT is zero for a call to an explicitly named function, a | |
| 464 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find | |
| 465 arguments for the function being compiled. | |
| 466 | |
| 467 When processing a call to a compiler support library function, LIBNAME | |
| 468 identifies which one. It is a `symbol_ref' rtx which contains the name of | |
| 469 the function, as a string. LIBNAME is 0 when an ordinary C function call is | |
| 470 being processed. Thus, each time this macro is called, either LIBNAME or | |
| 471 FNTYPE is nonzero, but never both of them at once. */ | |
| 472 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ | |
| 473 (CUM) = 0 | |
| 474 | |
| 475 /* A C expression that is nonzero if REGNO is the number of a hard register in | |
| 476 which function arguments are sometimes passed. This does *not* include | |
| 477 implicit arguments such as the static chain and the structure-value address. | |
| 478 On many machines, no registers can be used for this purpose since all | |
| 479 function arguments are pushed on the stack. */ | |
| 480 #define FUNCTION_ARG_REGNO_P(REGNO) \ | |
| 481 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) < FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS)) | |
| 482 | |
| 483 /*}}}*/ | |
| 484 /*{{{ How Large Values are Returned. */ | |
| 485 | |
| 486 /* Define this macro to be 1 if all structure and union return values must be | |
| 487 in memory. Since this results in slower code, this should be defined only | |
| 488 if needed for compatibility with other compilers or with an ABI. If you | |
| 489 define this macro to be 0, then the conventions used for structure and union | |
| 490 return values are decided by the `TARGET_RETURN_IN_MEMORY' macro. | |
| 491 | |
| 492 If not defined, this defaults to the value 1. */ | |
| 493 #define DEFAULT_PCC_STRUCT_RETURN 1 | |
| 494 | |
| 495 /*}}}*/ | |
| 496 /*{{{ Generating Code for Profiling. */ | |
| 497 | |
| 498 /* A C statement or compound statement to output to FILE some assembler code to | |
| 499 call the profiling subroutine `mcount'. Before calling, the assembler code | |
| 500 must load the address of a counter variable into a register where `mcount' | |
| 501 expects to find the address. The name of this variable is `LP' followed by | |
| 502 the number LABELNO, so you would generate the name using `LP%d' in a | |
| 503 `fprintf'. | |
| 504 | |
| 505 The details of how the address should be passed to `mcount' are determined | |
| 506 by your operating system environment, not by GCC. To figure them out, | |
| 507 compile a small program for profiling using the system's installed C | |
| 508 compiler and look at the assembler code that results. */ | |
| 509 #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 510 { \ | |
| 511 fprintf (FILE, "\t mov rp, r1\n" ); \ | |
| 512 fprintf (FILE, "\t ldi:32 mcount, r0\n" ); \ | |
| 513 fprintf (FILE, "\t call @r0\n" ); \ | |
| 514 fprintf (FILE, ".word\tLP%d\n", LABELNO); \ | |
| 515 } | |
| 516 | |
| 517 /*}}}*/ | |
| 518 /*{{{ Trampolines for Nested Functions. */ | |
| 519 | |
| 520 /* A C expression for the size in bytes of the trampoline, as an integer. */ | |
| 521 #define TRAMPOLINE_SIZE 18 | |
| 522 | |
| 523 /* We want the trampoline to be aligned on a 32bit boundary so that we can | |
| 524 make sure the location of the static chain & target function within | |
| 525 the trampoline is also aligned on a 32bit boundary. */ | |
| 526 #define TRAMPOLINE_ALIGNMENT 32 | |
| 527 | |
| 528 /*}}}*/ | |
| 529 /*{{{ Addressing Modes. */ | |
| 530 | |
| 531 /* A number, the maximum number of registers that can appear in a valid memory | |
| 532 address. Note that it is up to you to specify a value equal to the maximum | |
| 533 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */ | |
| 534 #define MAX_REGS_PER_ADDRESS 1 | |
| 535 | |
| 536 /* A C compound statement with a conditional `goto LABEL;' executed if X (an | |
| 537 RTX) is a legitimate memory address on the target machine for a memory | |
| 538 operand of mode MODE. */ | |
| 539 | |
| 540 /* On the FR30 we only have one real addressing mode - an address in a | |
| 541 register. There are three special cases however: | |
| 542 | |
| 543 * indexed addressing using small positive offsets from the stack pointer | |
| 544 | |
| 545 * indexed addressing using small signed offsets from the frame pointer | |
| 546 | |
| 547 * register plus register addressing using R13 as the base register. | |
| 548 | |
| 549 At the moment we only support the first two of these special cases. */ | |
| 550 | |
| 551 #ifdef REG_OK_STRICT | |
| 552 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ | |
| 553 do \ | |
| 554 { \ | |
| 555 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ | |
| 556 goto LABEL; \ | |
| 557 if (GET_CODE (X) == PLUS \ | |
| 558 && ((MODE) == SImode || (MODE) == SFmode) \ | |
| 559 && GET_CODE (XEXP (X, 0)) == REG \ | |
| 560 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ | |
| 561 && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
| 562 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ | |
| 563 goto LABEL; \ | |
| 564 if (GET_CODE (X) == PLUS \ | |
| 565 && ((MODE) == SImode || (MODE) == SFmode) \ | |
| 566 && GET_CODE (XEXP (X, 0)) == REG \ | |
| 567 && REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ | |
| 568 && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
| 569 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ | |
| 570 goto LABEL; \ | |
| 571 } \ | |
| 572 while (0) | |
| 573 #else | |
| 574 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ | |
| 575 do \ | |
| 576 { \ | |
| 577 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ | |
| 578 goto LABEL; \ | |
| 579 if (GET_CODE (X) == PLUS \ | |
| 580 && ((MODE) == SImode || (MODE) == SFmode) \ | |
| 581 && GET_CODE (XEXP (X, 0)) == REG \ | |
| 582 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ | |
| 583 && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
| 584 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ | |
| 585 goto LABEL; \ | |
| 586 if (GET_CODE (X) == PLUS \ | |
| 587 && ((MODE) == SImode || (MODE) == SFmode) \ | |
| 588 && GET_CODE (XEXP (X, 0)) == REG \ | |
| 589 && (REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ | |
| 590 || REGNO (XEXP (X, 0)) == ARG_POINTER_REGNUM) \ | |
| 591 && GET_CODE (XEXP (X, 1)) == CONST_INT \ | |
| 592 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ | |
| 593 goto LABEL; \ | |
| 594 } \ | |
| 595 while (0) | |
| 596 #endif | |
| 597 | |
| 598 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for | |
| 599 use as a base register. For hard registers, it should always accept those | |
| 600 which the hardware permits and reject the others. Whether the macro accepts | |
| 601 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as | |
| 602 described above. This usually requires two variant definitions, of which | |
| 603 `REG_OK_STRICT' controls the one actually used. */ | |
| 604 #ifdef REG_OK_STRICT | |
| 605 #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) <= STACK_POINTER_REGNUM) | |
| 606 #else | |
| 607 #define REG_OK_FOR_BASE_P(X) 1 | |
| 608 #endif | |
| 609 | |
| 610 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for | |
| 611 use as an index register. | |
| 612 | |
| 613 The difference between an index register and a base register is that the | |
| 614 index register may be scaled. If an address involves the sum of two | |
| 615 registers, neither one of them scaled, then either one may be labeled the | |
| 616 "base" and the other the "index"; but whichever labeling is used must fit | |
| 617 the machine's constraints of which registers may serve in each capacity. | |
| 618 The compiler will try both labelings, looking for one that is valid, and | |
| 619 will reload one or both registers only if neither labeling works. */ | |
| 620 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) | |
| 621 | |
| 622 /*}}}*/ | |
| 623 /*{{{ Describing Relative Costs of Operations */ | |
| 624 | |
| 625 /* Define this macro as a C expression which is nonzero if accessing less than | |
| 626 a word of memory (i.e. a `char' or a `short') is no faster than accessing a | |
| 627 word of memory, i.e., if such access require more than one instruction or if | |
| 628 there is no difference in cost between byte and (aligned) word loads. | |
| 629 | |
| 630 When this macro is not defined, the compiler will access a field by finding | |
| 631 the smallest containing object; when it is defined, a fullword load will be | |
| 632 used if alignment permits. Unless bytes accesses are faster than word | |
| 633 accesses, using word accesses is preferable since it may eliminate | |
| 634 subsequent memory access if subsequent accesses occur to other fields in the | |
| 635 same word of the structure, but to different bytes. */ | |
| 636 #define SLOW_BYTE_ACCESS 1 | |
| 637 | |
| 638 /*}}}*/ | |
| 639 /*{{{ Dividing the output into sections. */ | |
| 640 | |
| 641 /* A C expression whose value is a string containing the assembler operation | |
| 642 that should precede instructions and read-only data. Normally `".text"' is | |
| 643 right. */ | |
| 644 #define TEXT_SECTION_ASM_OP "\t.text" | |
| 645 | |
| 646 /* A C expression whose value is a string containing the assembler operation to | |
| 647 identify the following data as writable initialized data. Normally | |
| 648 `".data"' is right. */ | |
| 649 #define DATA_SECTION_ASM_OP "\t.data" | |
| 650 | |
| 651 #define BSS_SECTION_ASM_OP "\t.section .bss" | |
| 652 | |
| 653 /*}}}*/ | |
| 654 /*{{{ The Overall Framework of an Assembler File. */ | |
| 655 | |
| 656 /* A C string constant describing how to begin a comment in the target | |
| 657 assembler language. The compiler assumes that the comment will end at the | |
| 658 end of the line. */ | |
| 659 #define ASM_COMMENT_START ";" | |
| 660 | |
| 661 /* A C string constant for text to be output before each `asm' statement or | |
| 662 group of consecutive ones. Normally this is `"#APP"', which is a comment | |
| 663 that has no effect on most assemblers but tells the GNU assembler that it | |
| 664 must check the lines that follow for all valid assembler constructs. */ | |
| 665 #define ASM_APP_ON "#APP\n" | |
| 666 | |
| 667 /* A C string constant for text to be output after each `asm' statement or | |
| 668 group of consecutive ones. Normally this is `"#NO_APP"', which tells the | |
| 669 GNU assembler to resume making the time-saving assumptions that are valid | |
| 670 for ordinary compiler output. */ | |
| 671 #define ASM_APP_OFF "#NO_APP\n" | |
| 672 | |
| 673 /*}}}*/ | |
| 674 /*{{{ Output and Generation of Labels. */ | |
| 675 | |
| 676 /* Globalizing directive for a label. */ | |
| 677 #define GLOBAL_ASM_OP "\t.globl " | |
| 678 | |
| 679 /*}}}*/ | |
| 680 /*{{{ Output of Assembler Instructions. */ | |
| 681 | |
| 682 /* A C compound statement to output to stdio stream STREAM the assembler syntax | |
| 683 for an instruction operand X. X is an RTL expression. | |
| 684 | |
| 685 CODE is a value that can be used to specify one of several ways of printing | |
| 686 the operand. It is used when identical operands must be printed differently | |
| 687 depending on the context. CODE comes from the `%' specification that was | |
| 688 used to request printing of the operand. If the specification was just | |
| 689 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is | |
| 690 the ASCII code for LTR. | |
| 691 | |
| 692 If X is a register, this macro should print the register's name. The names | |
| 693 can be found in an array `reg_names' whose type is `char *[]'. `reg_names' | |
| 694 is initialized from `REGISTER_NAMES'. | |
| 695 | |
| 696 When the machine description has a specification `%PUNCT' (a `%' followed by | |
| 697 a punctuation character), this macro is called with a null pointer for X and | |
| 698 the punctuation character for CODE. */ | |
| 699 #define PRINT_OPERAND(STREAM, X, CODE) fr30_print_operand (STREAM, X, CODE) | |
| 700 | |
| 701 /* A C expression which evaluates to true if CODE is a valid punctuation | |
| 702 character for use in the `PRINT_OPERAND' macro. If | |
| 703 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation | |
| 704 characters (except for the standard one, `%') are used in this way. */ | |
| 705 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) (CODE == '#') | |
| 706 | |
| 707 /* A C compound statement to output to stdio stream STREAM the assembler syntax | |
| 708 for an instruction operand that is a memory reference whose address is X. X | |
| 709 is an RTL expression. */ | |
| 710 | |
| 711 #define PRINT_OPERAND_ADDRESS(STREAM, X) fr30_print_operand_address (STREAM, X) | |
| 712 | |
| 713 #define REGISTER_PREFIX "%" | |
| 714 #define LOCAL_LABEL_PREFIX "." | |
| 715 #define USER_LABEL_PREFIX "" | |
| 716 #define IMMEDIATE_PREFIX "" | |
| 717 | |
| 718 /*}}}*/ | |
| 719 /*{{{ Output of Dispatch Tables. */ | |
| 720 | |
| 721 /* This macro should be provided on machines where the addresses in a dispatch | |
| 722 table are relative to the table's own address. | |
| 723 | |
| 724 The definition should be a C statement to output to the stdio stream STREAM | |
| 725 an assembler pseudo-instruction to generate a difference between two labels. | |
| 726 VALUE and REL are the numbers of two internal labels. The definitions of | |
| 727 these labels are output using `(*targetm.asm_out.internal_label)', and they must be | |
| 728 printed in the same way here. For example, | |
| 729 | |
| 730 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */ | |
| 731 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ | |
| 732 fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL) | |
| 733 | |
| 734 /* This macro should be provided on machines where the addresses in a dispatch | |
| 735 table are absolute. | |
| 736 | |
| 737 The definition should be a C statement to output to the stdio stream STREAM | |
| 738 an assembler pseudo-instruction to generate a reference to a label. VALUE | |
| 739 is the number of an internal label whose definition is output using | |
| 740 `(*targetm.asm_out.internal_label)'. For example, | |
| 741 | |
| 742 fprintf (STREAM, "\t.word L%d\n", VALUE) */ | |
| 743 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ | |
| 744 fprintf (STREAM, "\t.word .L%d\n", VALUE) | |
| 745 | |
| 746 /*}}}*/ | |
| 747 /*{{{ Assembler Commands for Alignment. */ | |
| 748 | |
| 749 /* A C statement to output to the stdio stream STREAM an assembler command to | |
| 750 advance the location counter to a multiple of 2 to the POWER bytes. POWER | |
| 751 will be a C expression of type `int'. */ | |
| 752 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ | |
| 753 fprintf ((STREAM), "\t.p2align %d\n", (POWER)) | |
| 754 | |
| 755 /*}}}*/ | |
| 756 /*{{{ Miscellaneous Parameters. */ | |
| 757 | |
| 758 /* An alias for a machine mode name. This is the machine mode that elements of | |
| 759 a jump-table should have. */ | |
| 760 #define CASE_VECTOR_MODE SImode | |
| 761 | |
| 762 /* The maximum number of bytes that a single instruction can move quickly from | |
| 763 memory to memory. */ | |
| 764 #define MOVE_MAX 8 | |
| 765 | |
| 766 /* An alias for the machine mode for pointers. On most machines, define this | |
| 767 to be the integer mode corresponding to the width of a hardware pointer; | |
| 768 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines | |
| 769 you must define this to be one of the partial integer modes, such as | |
| 770 `PSImode'. | |
| 771 | |
| 772 The width of `Pmode' must be at least as large as the value of | |
| 773 `POINTER_SIZE'. If it is not equal, you must define the macro | |
| 774 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */ | |
| 775 #define Pmode SImode | |
| 776 | |
| 777 /* An alias for the machine mode used for memory references to functions being | |
| 778 called, in `call' RTL expressions. On most machines this should be | |
| 779 `QImode'. */ | |
| 780 #define FUNCTION_MODE QImode | |
| 781 | |
| 782 /*}}}*/ | |
| 783 | |
| 784 /* Local Variables: */ | |
| 785 /* folded-file: t */ | |
| 786 /* End: */ |