1/*{{{ Comment. */ 2 3/* Definitions of FR30 target. 4 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 5 Free Software Foundation, Inc. 6 Contributed by Cygnus Solutions. 7 8This file is part of GCC. 9 10GCC is free software; you can redistribute it and/or modify 11it under the terms of the GNU General Public License as published by 12the Free Software Foundation; either version 2, or (at your option) 13any later version. 14 15GCC is distributed in the hope that it will be useful, 16but WITHOUT ANY WARRANTY; without even the implied warranty of 17MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18GNU General Public License for more details. 19 20You should have received a copy of the GNU General Public License 21along with GCC; see the file COPYING. If not, write to 22the Free Software Foundation, 51 Franklin Street, Fifth Floor, 23Boston, MA 02110-1301, USA. */ 24 25/*}}}*/ 26/*{{{ Driver configuration. */ 27 28/* Defined in svr4.h. */ 29#undef SWITCH_TAKES_ARG 30 31/* Defined in svr4.h. */ 32#undef WORD_SWITCH_TAKES_ARG 33 34/*}}}*/ 35/*{{{ Run-time target specifications. */ 36 37#undef ASM_SPEC 38#define ASM_SPEC "%{v}" 39 40/* Define this to be a string constant containing `-D' options to define the 41 predefined macros that identify this machine and system. These macros will 42 be predefined unless the `-ansi' option is specified. */ 43 44#define TARGET_CPU_CPP_BUILTINS() \ 45 do \ 46 { \ 47 builtin_define_std ("fr30"); \ 48 builtin_assert ("machine=fr30"); \ 49 } \ 50 while (0) 51 52#define TARGET_VERSION fprintf (stderr, " (fr30)"); 53 54#define CAN_DEBUG_WITHOUT_FP 55 56#undef STARTFILE_SPEC 57#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s" 58 59/* Include the OS stub library, so that the code can be simulated. 60 This is not the right way to do this. Ideally this kind of thing 61 should be done in the linker script - but I have not worked out how 62 to specify the location of a linker script in a gcc command line yet... */ 63#undef ENDFILE_SPEC 64#define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s" 65 66/*}}}*/ 67/*{{{ Storage Layout. */ 68 69#define BITS_BIG_ENDIAN 1 70 71#define BYTES_BIG_ENDIAN 1 72 73#define WORDS_BIG_ENDIAN 1 74 75#define UNITS_PER_WORD 4 76 77#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ 78 do \ 79 { \ 80 if (GET_MODE_CLASS (MODE) == MODE_INT \ 81 && GET_MODE_SIZE (MODE) < 4) \ 82 (MODE) = SImode; \ 83 } \ 84 while (0) 85 86#define PARM_BOUNDARY 32 87 88#define STACK_BOUNDARY 32 89 90#define FUNCTION_BOUNDARY 32 91 92#define BIGGEST_ALIGNMENT 32 93 94#define DATA_ALIGNMENT(TYPE, ALIGN) \ 95 (TREE_CODE (TYPE) == ARRAY_TYPE \ 96 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ 97 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 98 99#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ 100 (TREE_CODE (EXP) == STRING_CST \ 101 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 102 103#define STRICT_ALIGNMENT 1 104 105/* Defined in svr4.h. */ 106#define PCC_BITFIELD_TYPE_MATTERS 1 107 108/*}}}*/ 109/*{{{ Layout of Source Language Data Types. */ 110 111#define SHORT_TYPE_SIZE 16 112#define INT_TYPE_SIZE 32 113#define LONG_TYPE_SIZE 32 114#define LONG_LONG_TYPE_SIZE 64 115#define FLOAT_TYPE_SIZE 32 116#define DOUBLE_TYPE_SIZE 64 117#define LONG_DOUBLE_TYPE_SIZE 64 118 119#define DEFAULT_SIGNED_CHAR 1 120 121/*}}}*/ 122/*{{{ REGISTER BASICS. */ 123 124/* Number of hardware registers known to the compiler. They receive numbers 0 125 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number 126 really is assigned the number `FIRST_PSEUDO_REGISTER'. */ 127#define FIRST_PSEUDO_REGISTER 21 128 129/* Fixed register assignments: */ 130 131/* Here we do a BAD THING - reserve a register for use by the machine 132 description file. There are too many places in compiler where it 133 assumes that it can issue a branch or jump instruction without 134 providing a scratch register for it, and reload just cannot cope, so 135 we keep a register back for these situations. */ 136#define COMPILER_SCRATCH_REGISTER 0 137 138/* The register that contains the result of a function call. */ 139#define RETURN_VALUE_REGNUM 4 140 141/* The first register that can contain the arguments to a function. */ 142#define FIRST_ARG_REGNUM 4 143 144/* A call-used register that can be used during the function prologue. */ 145#define PROLOGUE_TMP_REGNUM COMPILER_SCRATCH_REGISTER 146 147/* Register numbers used for passing a function's static chain pointer. If 148 register windows are used, the register number as seen by the called 149 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as 150 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers 151 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. 152 153 The static chain register need not be a fixed register. 154 155 If the static chain is passed in memory, these macros should not be defined; 156 instead, the next two macros should be defined. */ 157#define STATIC_CHAIN_REGNUM 12 158/* #define STATIC_CHAIN_INCOMING_REGNUM */ 159 160/* An FR30 specific hardware register. */ 161#define ACCUMULATOR_REGNUM 13 162 163/* The register number of the frame pointer register, which is used to access 164 automatic variables in the stack frame. On some machines, the hardware 165 determines which register this is. On other machines, you can choose any 166 register you wish for this purpose. */ 167#define FRAME_POINTER_REGNUM 14 168 169/* The register number of the stack pointer register, which must also be a 170 fixed register according to `FIXED_REGISTERS'. On most machines, the 171 hardware determines which register this is. */ 172#define STACK_POINTER_REGNUM 15 173 174/* The following a fake hard registers that describe some of the dedicated 175 registers on the FR30. */ 176#define CONDITION_CODE_REGNUM 16 177#define RETURN_POINTER_REGNUM 17 178#define MD_HIGH_REGNUM 18 179#define MD_LOW_REGNUM 19 180 181/* An initializer that says which registers are used for fixed purposes all 182 throughout the compiled code and are therefore not available for general 183 allocation. These would include the stack pointer, the frame pointer 184 (except on machines where that can be used as a general register when no 185 frame pointer is needed), the program counter on machines where that is 186 considered one of the addressable registers, and any other numbered register 187 with a standard use. 188 189 This information is expressed as a sequence of numbers, separated by commas 190 and surrounded by braces. The Nth number is 1 if register N is fixed, 0 191 otherwise. 192 193 The table initialized from this macro, and the table initialized by the 194 following one, may be overridden at run time either automatically, by the 195 actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the 196 command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */ 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/*{{{ How Values Fit in Registers. */ 238 239/* A C expression for the number of consecutive hard registers, starting at 240 register number REGNO, required to hold a value of mode MODE. */ 241 242#define HARD_REGNO_NREGS(REGNO, MODE) \ 243 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) 244 245/* A C expression that is nonzero if it is permissible to store a value of mode 246 MODE in hard register number REGNO (or in several registers starting with 247 that one). */ 248 249#define HARD_REGNO_MODE_OK(REGNO, MODE) 1 250 251/* A C expression that is nonzero if it is desirable to choose register 252 allocation so as to avoid move instructions between a value of mode MODE1 253 and a value of mode MODE2. 254 255 If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are 256 ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be 257 zero. */ 258#define MODES_TIEABLE_P(MODE1, MODE2) 1 259 260/*}}}*/ 261/*{{{ Register Classes. */ 262 263/* An enumeral type that must be defined with all the register class names as 264 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last 265 register class, followed by one more enumeral value, `LIM_REG_CLASSES', 266 which is not a register class but rather tells how many classes there are. 267 268 Each register class has a number, which is the value of casting the class 269 name to type `int'. The number serves as an index in many of the tables 270 described below. */ 271enum reg_class 272{ 273 NO_REGS, 274 MULTIPLY_32_REG, /* the MDL register as used by the MULH, MULUH insns */ 275 MULTIPLY_64_REG, /* the MDH,MDL register pair as used by MUL and MULU */ 276 LOW_REGS, /* registers 0 through 7 */ 277 HIGH_REGS, /* registers 8 through 15 */ 278 REAL_REGS, /* i.e. all the general hardware registers on the FR30 */ 279 ALL_REGS, 280 LIM_REG_CLASSES 281}; 282 283#define GENERAL_REGS REAL_REGS 284#define N_REG_CLASSES ((int) LIM_REG_CLASSES) 285 286/* An initializer containing the names of the register classes as C string 287 constants. These names are used in writing some of the debugging dumps. */ 288#define REG_CLASS_NAMES \ 289{ \ 290 "NO_REGS", \ 291 "MULTIPLY_32_REG", \ 292 "MULTIPLY_64_REG", \ 293 "LOW_REGS", \ 294 "HIGH_REGS", \ 295 "REAL_REGS", \ 296 "ALL_REGS" \ 297 } 298 299/* An initializer containing the contents of the register classes, as integers 300 which are bit masks. The Nth integer specifies the contents of class N. 301 The way the integer MASK is interpreted is that register R is in the class 302 if `MASK & (1 << R)' is 1. 303 304 When the machine has more than 32 registers, an integer does not suffice. 305 Then the integers are replaced by sub-initializers, braced groupings 306 containing several integers. Each sub-initializer must be suitable as an 307 initializer for the type `HARD_REG_SET' which is defined in 308 `hard-reg-set.h'. */ 309#define REG_CLASS_CONTENTS \ 310{ \ 311 { 0 }, \ 312 { 1 << MD_LOW_REGNUM }, \ 313 { (1 << MD_LOW_REGNUM) | (1 << MD_HIGH_REGNUM) }, \ 314 { (1 << 8) - 1 }, \ 315 { ((1 << 8) - 1) << 8 }, \ 316 { (1 << CONDITION_CODE_REGNUM) - 1 }, \ 317 { (1 << FIRST_PSEUDO_REGISTER) - 1 } \ 318} 319 320/* A C expression whose value is a register class containing hard register 321 REGNO. In general there is more than one such class; choose a class which 322 is "minimal", meaning that no smaller class also contains the register. */ 323#define REGNO_REG_CLASS(REGNO) \ 324 ( (REGNO) < 8 ? LOW_REGS \ 325 : (REGNO) < CONDITION_CODE_REGNUM ? HIGH_REGS \ 326 : (REGNO) == MD_LOW_REGNUM ? MULTIPLY_32_REG \ 327 : (REGNO) == MD_HIGH_REGNUM ? MULTIPLY_64_REG \ 328 : ALL_REGS) 329 330/* A macro whose definition is the name of the class to which a valid base 331 register must belong. A base register is one used in an address which is 332 the register value plus a displacement. */ 333#define BASE_REG_CLASS REAL_REGS 334 335/* A macro whose definition is the name of the class to which a valid index 336 register must belong. An index register is one used in an address where its 337 value is either multiplied by a scale factor or added to another register 338 (as well as added to a displacement). */ 339#define INDEX_REG_CLASS REAL_REGS 340 341/* A C expression which defines the machine-dependent operand constraint 342 letters for register classes. If CHAR is such a letter, the value should be 343 the register class corresponding to it. Otherwise, the value should be 344 `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS', 345 will not be passed to this macro; you do not need to handle it. 346 347 The following letters are unavailable, due to being used as 348 constraints: 349 '0'..'9' 350 '<', '>' 351 'E', 'F', 'G', 'H' 352 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P' 353 'Q', 'R', 'S', 'T', 'U' 354 'V', 'X' 355 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */ 356 357#define REG_CLASS_FROM_LETTER(CHAR) \ 358 ( (CHAR) == 'd' ? MULTIPLY_64_REG \ 359 : (CHAR) == 'e' ? MULTIPLY_32_REG \ 360 : (CHAR) == 'h' ? HIGH_REGS \ 361 : (CHAR) == 'l' ? LOW_REGS \ 362 : (CHAR) == 'a' ? ALL_REGS \ 363 : NO_REGS) 364 365/* A C expression which is nonzero if register number NUM is suitable for use 366 as a base register in operand addresses. It may be either a suitable hard 367 register or a pseudo register that has been allocated such a hard register. */ 368#define REGNO_OK_FOR_BASE_P(NUM) 1 369 370/* A C expression which is nonzero if register number NUM is suitable for use 371 as an index register in operand addresses. It may be either a suitable hard 372 register or a pseudo register that has been allocated such a hard register. 373 374 The difference between an index register and a base register is that the 375 index register may be scaled. If an address involves the sum of two 376 registers, neither one of them scaled, then either one may be labeled the 377 "base" and the other the "index"; but whichever labeling is used must fit 378 the machine's constraints of which registers may serve in each capacity. 379 The compiler will try both labelings, looking for one that is valid, and 380 will reload one or both registers only if neither labeling works. */ 381#define REGNO_OK_FOR_INDEX_P(NUM) 1 382 383/* A C expression that places additional restrictions on the register class to 384 use when it is necessary to copy value X into a register in class CLASS. 385 The value is a register class; perhaps CLASS, or perhaps another, smaller 386 class. On many machines, the following definition is safe: 387 388 #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS 389 390 Sometimes returning a more restrictive class makes better code. For 391 example, on the 68000, when X is an integer constant that is in range for a 392 `moveq' instruction, the value of this macro is always `DATA_REGS' as long 393 as CLASS includes the data registers. Requiring a data register guarantees 394 that a `moveq' will be used. 395 396 If X is a `const_double', by returning `NO_REGS' you can force X into a 397 memory constant. This is useful on certain machines where immediate 398 floating values cannot be loaded into certain kinds of registers. */ 399#define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS 400 401/* A C expression for the maximum number of consecutive registers of 402 class CLASS needed to hold a value of mode MODE. 403 404 This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value 405 of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of 406 `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS. 407 408 This macro helps control the handling of multiple-word values in 409 the reload pass. */ 410#define CLASS_MAX_NREGS(CLASS, MODE) HARD_REGNO_NREGS (0, MODE) 411 412/*}}}*/ 413/*{{{ CONSTANTS. */ 414 415/* A C expression that defines the machine-dependent operand constraint letters 416 (`I', `J', `K', .. 'P') that specify particular ranges of integer values. 417 If C is one of those letters, the expression should check that VALUE, an 418 integer, is in the appropriate range and return 1 if so, 0 otherwise. If C 419 is not one of those letters, the value should be 0 regardless of VALUE. */ 420#define CONST_OK_FOR_LETTER_P(VALUE, C) \ 421 ( (C) == 'I' ? IN_RANGE (VALUE, 0, 15) \ 422 : (C) == 'J' ? IN_RANGE (VALUE, -16, -1) \ 423 : (C) == 'K' ? IN_RANGE (VALUE, 16, 31) \ 424 : (C) == 'L' ? IN_RANGE (VALUE, 0, (1 << 8) - 1) \ 425 : (C) == 'M' ? IN_RANGE (VALUE, 0, (1 << 20) - 1) \ 426 : (C) == 'P' ? IN_RANGE (VALUE, -(1 << 8), (1 << 8) - 1) \ 427 : 0) 428 429/* A C expression that defines the machine-dependent operand constraint letters 430 (`G', `H') that specify particular ranges of `const_double' values. 431 432 If C is one of those letters, the expression should check that VALUE, an RTX 433 of code `const_double', is in the appropriate range and return 1 if so, 0 434 otherwise. If C is not one of those letters, the value should be 0 435 regardless of VALUE. 436 437 `const_double' is used for all floating-point constants and for `DImode' 438 fixed-point constants. A given letter can accept either or both kinds of 439 values. It can use `GET_MODE' to distinguish between these kinds. */ 440#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 0 441 442/* A C expression that defines the optional machine-dependent constraint 443 letters (`Q', `R', `S', `T', `U') that can be used to segregate specific 444 types of operands, usually memory references, for the target machine. 445 Normally this macro will not be defined. If it is required for a particular 446 target machine, it should return 1 if VALUE corresponds to the operand type 447 represented by the constraint letter C. If C is not defined as an extra 448 constraint, the value returned should be 0 regardless of VALUE. 449 450 For example, on the ROMP, load instructions cannot have their output in r0 451 if the memory reference contains a symbolic address. Constraint letter `Q' 452 is defined as representing a memory address that does *not* contain a 453 symbolic address. An alternative is specified with a `Q' constraint on the 454 input and `r' on the output. The next alternative specifies `m' on the 455 input and a register class that does not include r0 on the output. */ 456#define EXTRA_CONSTRAINT(VALUE, C) \ 457 ((C) == 'Q' ? (GET_CODE (VALUE) == MEM && GET_CODE (XEXP (VALUE, 0)) == SYMBOL_REF) : 0) 458 459/*}}}*/ 460/*{{{ Basic Stack Layout. */ 461 462/* Define this macro if pushing a word onto the stack moves the stack pointer 463 to a smaller address. */ 464#define STACK_GROWS_DOWNWARD 1 465 466/* Define this to macro nonzero if the addresses of local variable slots 467 are at negative offsets from the frame pointer. */ 468#define FRAME_GROWS_DOWNWARD 1 469 470/* Offset from the frame pointer to the first local variable slot to be 471 allocated. 472 473 If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the 474 first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by 475 adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */ 476/* #define STARTING_FRAME_OFFSET -4 */ 477#define STARTING_FRAME_OFFSET 0 478 479/* Offset from the stack pointer register to the first location at which 480 outgoing arguments are placed. If not specified, the default value of zero 481 is used. This is the proper value for most machines. 482 483 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 484 location at which outgoing arguments are placed. */ 485#define STACK_POINTER_OFFSET 0 486 487/* Offset from the argument pointer register to the first argument's address. 488 On some machines it may depend on the data type of the function. 489 490 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 491 argument's address. */ 492#define FIRST_PARM_OFFSET(FUNDECL) 0 493 494/* A C expression whose value is RTL representing the location of the incoming 495 return address at the beginning of any function, before the prologue. This 496 RTL is either a `REG', indicating that the return value is saved in `REG', 497 or a `MEM' representing a location in the stack. 498 499 You only need to define this macro if you want to support call frame 500 debugging information like that provided by DWARF 2. */ 501#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM) 502 503/*}}}*/ 504/*{{{ Register That Address the Stack Frame. */ 505 506/* The register number of the arg pointer register, which is used to access the 507 function's argument list. On some machines, this is the same as the frame 508 pointer register. On some machines, the hardware determines which register 509 this is. On other machines, you can choose any register you wish for this 510 purpose. If this is not the same register as the frame pointer register, 511 then you must mark it as a fixed register according to `FIXED_REGISTERS', or 512 arrange to be able to eliminate it. */ 513#define ARG_POINTER_REGNUM 20 514 515/*}}}*/ 516/*{{{ Eliminating the Frame Pointer and the Arg Pointer. */ 517 518/* A C expression which is nonzero if a function must have and use a frame 519 pointer. This expression is evaluated in the reload pass. If its value is 520 nonzero the function will have a frame pointer. 521 522 The expression can in principle examine the current function and decide 523 according to the facts, but on most machines the constant 0 or the constant 524 1 suffices. Use 0 when the machine allows code to be generated with no 525 frame pointer, and doing so saves some time or space. Use 1 when there is 526 no possible advantage to avoiding a frame pointer. 527 528 In certain cases, the compiler does not know how to produce valid code 529 without a frame pointer. The compiler recognizes those cases and 530 automatically gives the function a frame pointer regardless of what 531 `FRAME_POINTER_REQUIRED' says. You don't need to worry about them. 532 533 In a function that does not require a frame pointer, the frame pointer 534 register can be allocated for ordinary usage, unless you mark it as a fixed 535 register. See `FIXED_REGISTERS' for more information. */ 536/* #define FRAME_POINTER_REQUIRED 0 */ 537#define FRAME_POINTER_REQUIRED \ 538 (flag_omit_frame_pointer == 0 || current_function_pretend_args_size > 0) 539 540/* If defined, this macro specifies a table of register pairs used to eliminate 541 unneeded registers that point into the stack frame. If it is not defined, 542 the only elimination attempted by the compiler is to replace references to 543 the frame pointer with references to the stack pointer. 544 545 The definition of this macro is a list of structure initializations, each of 546 which specifies an original and replacement register. 547 548 On some machines, the position of the argument pointer is not known until 549 the compilation is completed. In such a case, a separate hard register must 550 be used for the argument pointer. This register can be eliminated by 551 replacing it with either the frame pointer or the argument pointer, 552 depending on whether or not the frame pointer has been eliminated. 553 554 In this case, you might specify: 555 #define ELIMINABLE_REGS \ 556 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 557 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 558 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} 559 560 Note that the elimination of the argument pointer with the stack pointer is 561 specified first since that is the preferred elimination. */ 562 563#define ELIMINABLE_REGS \ 564{ \ 565 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 566 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 567 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ 568} 569 570/* A C expression that returns nonzero if the compiler is allowed to try to 571 replace register number FROM with register number TO. This macro 572 need only be defined if `ELIMINABLE_REGS' is defined, and will usually be 573 the constant 1, since most of the cases preventing register elimination are 574 things that the compiler already knows about. */ 575 576#define CAN_ELIMINATE(FROM, TO) \ 577 ((TO) == FRAME_POINTER_REGNUM || ! frame_pointer_needed) 578 579/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the 580 initial difference between the specified pair of registers. This macro must 581 be defined if `ELIMINABLE_REGS' is defined. */ 582#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 583 (OFFSET) = fr30_compute_frame_size (FROM, TO) 584 585/*}}}*/ 586/*{{{ Passing Function Arguments on the Stack. */ 587 588/* If defined, the maximum amount of space required for outgoing arguments will 589 be computed and placed into the variable 590 `current_function_outgoing_args_size'. No space will be pushed onto the 591 stack for each call; instead, the function prologue should increase the 592 stack frame size by this amount. 593 594 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not 595 proper. */ 596#define ACCUMULATE_OUTGOING_ARGS 1 597 598/* A C expression that should indicate the number of bytes of its own arguments 599 that a function pops on returning, or 0 if the function pops no arguments 600 and the caller must therefore pop them all after the function returns. 601 602 FUNDECL is a C variable whose value is a tree node that describes the 603 function in question. Normally it is a node of type `FUNCTION_DECL' that 604 describes the declaration of the function. From this it is possible to 605 obtain the DECL_ATTRIBUTES of the function. 606 607 FUNTYPE is a C variable whose value is a tree node that describes the 608 function in question. Normally it is a node of type `FUNCTION_TYPE' that 609 describes the data type of the function. From this it is possible to obtain 610 the data types of the value and arguments (if known). 611 612 When a call to a library function is being considered, FUNTYPE will contain 613 an identifier node for the library function. Thus, if you need to 614 distinguish among various library functions, you can do so by their names. 615 Note that "library function" in this context means a function used to 616 perform arithmetic, whose name is known specially in the compiler and was 617 not mentioned in the C code being compiled. 618 619 STACK-SIZE is the number of bytes of arguments passed on the stack. If a 620 variable number of bytes is passed, it is zero, and argument popping will 621 always be the responsibility of the calling function. 622 623 On the VAX, all functions always pop their arguments, so the definition of 624 this macro is STACK-SIZE. On the 68000, using the standard calling 625 convention, no functions pop their arguments, so the value of the macro is 626 always 0 in this case. But an alternative calling convention is available 627 in which functions that take a fixed number of arguments pop them but other 628 functions (such as `printf') pop nothing (the caller pops all). When this 629 convention is in use, FUNTYPE is examined to determine whether a function 630 takes a fixed number of arguments. */ 631#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0 632 633/*}}}*/ 634/*{{{ Function Arguments in Registers. */ 635 636/* The number of register assigned to holding function arguments. */ 637 638#define FR30_NUM_ARG_REGS 4 639 640#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ 641 ( (NAMED) == 0 ? NULL_RTX \ 642 : targetm.calls.must_pass_in_stack (MODE, TYPE) ? NULL_RTX \ 643 : (CUM) >= FR30_NUM_ARG_REGS ? NULL_RTX \ 644 : gen_rtx_REG (MODE, CUM + FIRST_ARG_REGNUM)) 645 646/* A C type for declaring a variable that is used as the first argument of 647 `FUNCTION_ARG' and other related values. For some target machines, the type 648 `int' suffices and can hold the number of bytes of argument so far. 649 650 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments 651 that have been passed on the stack. The compiler has other variables to 652 keep track of that. For target machines on which all arguments are passed 653 on the stack, there is no need to store anything in `CUMULATIVE_ARGS'; 654 however, the data structure must exist and should not be empty, so use 655 `int'. */ 656/* On the FR30 this value is an accumulating count of the number of argument 657 registers that have been filled with argument values, as opposed to say, 658 the number of bytes of argument accumulated so far. */ 659#define CUMULATIVE_ARGS int 660 661/* A C statement (sans semicolon) for initializing the variable CUM for the 662 state at the beginning of the argument list. The variable has type 663 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type 664 of the function which will receive the args, or 0 if the args are to a 665 compiler support library function. The value of INDIRECT is nonzero when 666 processing an indirect call, for example a call through a function pointer. 667 The value of INDIRECT is zero for a call to an explicitly named function, a 668 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find 669 arguments for the function being compiled. 670 671 When processing a call to a compiler support library function, LIBNAME 672 identifies which one. It is a `symbol_ref' rtx which contains the name of 673 the function, as a string. LIBNAME is 0 when an ordinary C function call is 674 being processed. Thus, each time this macro is called, either LIBNAME or 675 FNTYPE is nonzero, but never both of them at once. */ 676#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ 677 (CUM) = 0 678 679/* A C statement (sans semicolon) to update the summarizer variable CUM to 680 advance past an argument in the argument list. The values MODE, TYPE and 681 NAMED describe that argument. Once this is done, the variable CUM is 682 suitable for analyzing the *following* argument with `FUNCTION_ARG', etc. 683 684 This macro need not do anything if the argument in question was passed on 685 the stack. The compiler knows how to track the amount of stack space used 686 for arguments without any special help. */ 687#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ 688 (CUM) += (NAMED) * fr30_num_arg_regs (MODE, TYPE) 689 690/* A C expression that is nonzero if REGNO is the number of a hard register in 691 which function arguments are sometimes passed. This does *not* include 692 implicit arguments such as the static chain and the structure-value address. 693 On many machines, no registers can be used for this purpose since all 694 function arguments are pushed on the stack. */ 695#define FUNCTION_ARG_REGNO_P(REGNO) \ 696 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) < FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS)) 697 698/*}}}*/ 699/*{{{ How Scalar Function Values are Returned. */ 700 701#define FUNCTION_VALUE(VALTYPE, FUNC) \ 702 gen_rtx_REG (TYPE_MODE (VALTYPE), RETURN_VALUE_REGNUM) 703 704/* A C expression to create an RTX representing the place where a library 705 function returns a value of mode MODE. If the precise function being called 706 is known, FUNC is a tree node (`FUNCTION_DECL') for it; otherwise, FUNC is a 707 null pointer. This makes it possible to use a different value-returning 708 convention for specific functions when all their calls are known. 709 710 Note that "library function" in this context means a compiler support 711 routine, used to perform arithmetic, whose name is known specially by the 712 compiler and was not mentioned in the C code being compiled. 713 714 The definition of `LIBRARY_VALUE' need not be concerned aggregate data 715 types, because none of the library functions returns such types. */ 716#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, RETURN_VALUE_REGNUM) 717 718/* A C expression that is nonzero if REGNO is the number of a hard register in 719 which the values of called function may come back. */ 720 721#define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM) 722 723/*}}}*/ 724/*{{{ How Large Values are Returned. */ 725 726/* Define this macro to be 1 if all structure and union return values must be 727 in memory. Since this results in slower code, this should be defined only 728 if needed for compatibility with other compilers or with an ABI. If you 729 define this macro to be 0, then the conventions used for structure and union 730 return values are decided by the `RETURN_IN_MEMORY' macro. 731 732 If not defined, this defaults to the value 1. */ 733#define DEFAULT_PCC_STRUCT_RETURN 1 734 735/*}}}*/ 736/*{{{ Generating Code for Profiling. */ 737 738/* A C statement or compound statement to output to FILE some assembler code to 739 call the profiling subroutine `mcount'. Before calling, the assembler code 740 must load the address of a counter variable into a register where `mcount' 741 expects to find the address. The name of this variable is `LP' followed by 742 the number LABELNO, so you would generate the name using `LP%d' in a 743 `fprintf'. 744 745 The details of how the address should be passed to `mcount' are determined 746 by your operating system environment, not by GCC. To figure them out, 747 compile a small program for profiling using the system's installed C 748 compiler and look at the assembler code that results. */ 749#define FUNCTION_PROFILER(FILE, LABELNO) \ 750{ \ 751 fprintf (FILE, "\t mov rp, r1\n" ); \ 752 fprintf (FILE, "\t ldi:32 mcount, r0\n" ); \ 753 fprintf (FILE, "\t call @r0\n" ); \ 754 fprintf (FILE, ".word\tLP%d\n", LABELNO); \ 755} 756 757/*}}}*/ 758/*{{{ Trampolines for Nested Functions. */ 759 760/* On the FR30, the trampoline is: 761 762 nop 763 ldi:32 STATIC, r12 764 nop 765 ldi:32 FUNCTION, r0 766 jmp @r0 767 768 The no-ops are to guarantee that the static chain and final 769 target are 32 bit aligned within the trampoline. That allows us to 770 initialize those locations with simple SImode stores. The alternative 771 would be to use HImode stores. */ 772 773/* A C statement to output, on the stream FILE, assembler code for a block of 774 data that contains the constant parts of a trampoline. This code should not 775 include a label--the label is taken care of automatically. */ 776#define TRAMPOLINE_TEMPLATE(FILE) \ 777{ \ 778 fprintf (FILE, "\tnop\n"); \ 779 fprintf (FILE, "\tldi:32\t#0, %s\n", reg_names [STATIC_CHAIN_REGNUM]); \ 780 fprintf (FILE, "\tnop\n"); \ 781 fprintf (FILE, "\tldi:32\t#0, %s\n", reg_names [COMPILER_SCRATCH_REGISTER]); \ 782 fprintf (FILE, "\tjmp\t@%s\n", reg_names [COMPILER_SCRATCH_REGISTER]); \ 783} 784 785/* A C expression for the size in bytes of the trampoline, as an integer. */ 786#define TRAMPOLINE_SIZE 18 787 788/* We want the trampoline to be aligned on a 32bit boundary so that we can 789 make sure the location of the static chain & target function within 790 the trampoline is also aligned on a 32bit boundary. */ 791#define TRAMPOLINE_ALIGNMENT 32 792 793/* A C statement to initialize the variable parts of a trampoline. ADDR is an 794 RTX for the address of the trampoline; FNADDR is an RTX for the address of 795 the nested function; STATIC_CHAIN is an RTX for the static chain value that 796 should be passed to the function when it is called. */ 797#define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \ 798do \ 799{ \ 800 emit_move_insn (gen_rtx_MEM (SImode, plus_constant (ADDR, 4)), STATIC_CHAIN);\ 801 emit_move_insn (gen_rtx_MEM (SImode, plus_constant (ADDR, 12)), FNADDR); \ 802} while (0); 803 804/*}}}*/ 805/*{{{ Addressing Modes. */ 806 807/* A C expression that is 1 if the RTX X is a constant which is a valid 808 address. On most machines, this can be defined as `CONSTANT_P (X)', but a 809 few machines are more restrictive in which constant addresses are supported. 810 811 `CONSTANT_P' accepts integer-values expressions whose values are not 812 explicitly known, such as `symbol_ref', `label_ref', and `high' expressions 813 and `const' arithmetic expressions, in addition to `const_int' and 814 `const_double' expressions. */ 815#define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) 816 817/* A number, the maximum number of registers that can appear in a valid memory 818 address. Note that it is up to you to specify a value equal to the maximum 819 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */ 820#define MAX_REGS_PER_ADDRESS 1 821 822/* A C compound statement with a conditional `goto LABEL;' executed if X (an 823 RTX) is a legitimate memory address on the target machine for a memory 824 operand of mode MODE. */ 825 826/* On the FR30 we only have one real addressing mode - an address in a 827 register. There are three special cases however: 828 829 * indexed addressing using small positive offsets from the stack pointer 830 831 * indexed addressing using small signed offsets from the frame pointer 832 833 * register plus register addressing using R13 as the base register. 834 835 At the moment we only support the first two of these special cases. */ 836 837#ifdef REG_OK_STRICT 838#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 839 do \ 840 { \ 841 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ 842 goto LABEL; \ 843 if (GET_CODE (X) == PLUS \ 844 && ((MODE) == SImode || (MODE) == SFmode) \ 845 && GET_CODE (XEXP (X, 0)) == REG \ 846 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ 847 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 848 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ 849 goto LABEL; \ 850 if (GET_CODE (X) == PLUS \ 851 && ((MODE) == SImode || (MODE) == SFmode) \ 852 && GET_CODE (XEXP (X, 0)) == REG \ 853 && REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ 854 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 855 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ 856 goto LABEL; \ 857 } \ 858 while (0) 859#else 860#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 861 do \ 862 { \ 863 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ 864 goto LABEL; \ 865 if (GET_CODE (X) == PLUS \ 866 && ((MODE) == SImode || (MODE) == SFmode) \ 867 && GET_CODE (XEXP (X, 0)) == REG \ 868 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ 869 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 870 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ 871 goto LABEL; \ 872 if (GET_CODE (X) == PLUS \ 873 && ((MODE) == SImode || (MODE) == SFmode) \ 874 && GET_CODE (XEXP (X, 0)) == REG \ 875 && (REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ 876 || REGNO (XEXP (X, 0)) == ARG_POINTER_REGNUM) \ 877 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 878 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ 879 goto LABEL; \ 880 } \ 881 while (0) 882#endif 883 884/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 885 use as a base register. For hard registers, it should always accept those 886 which the hardware permits and reject the others. Whether the macro accepts 887 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as 888 described above. This usually requires two variant definitions, of which 889 `REG_OK_STRICT' controls the one actually used. */ 890#ifdef REG_OK_STRICT 891#define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) <= STACK_POINTER_REGNUM) 892#else 893#define REG_OK_FOR_BASE_P(X) 1 894#endif 895 896/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 897 use as an index register. 898 899 The difference between an index register and a base register is that the 900 index register may be scaled. If an address involves the sum of two 901 registers, neither one of them scaled, then either one may be labeled the 902 "base" and the other the "index"; but whichever labeling is used must fit 903 the machine's constraints of which registers may serve in each capacity. 904 The compiler will try both labelings, looking for one that is valid, and 905 will reload one or both registers only if neither labeling works. */ 906#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) 907 908/* A C statement or compound statement with a conditional `goto LABEL;' 909 executed if memory address X (an RTX) can have different meanings depending 910 on the machine mode of the memory reference it is used for or if the address 911 is valid for some modes but not others. 912 913 Autoincrement and autodecrement addresses typically have mode-dependent 914 effects because the amount of the increment or decrement is the size of the 915 operand being addressed. Some machines have other mode-dependent addresses. 916 Many RISC machines have no mode-dependent addresses. 917 918 You may assume that ADDR is a valid address for the machine. */ 919#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) 920 921/* A C expression that is nonzero if X is a legitimate constant for an 922 immediate operand on the target machine. You can assume that X satisfies 923 `CONSTANT_P', so you need not check this. In fact, `1' is a suitable 924 definition for this macro on machines where anything `CONSTANT_P' is valid. */ 925#define LEGITIMATE_CONSTANT_P(X) 1 926 927/*}}}*/ 928/*{{{ Describing Relative Costs of Operations */ 929 930/* Define this macro as a C expression which is nonzero if accessing less than 931 a word of memory (i.e. a `char' or a `short') is no faster than accessing a 932 word of memory, i.e., if such access require more than one instruction or if 933 there is no difference in cost between byte and (aligned) word loads. 934 935 When this macro is not defined, the compiler will access a field by finding 936 the smallest containing object; when it is defined, a fullword load will be 937 used if alignment permits. Unless bytes accesses are faster than word 938 accesses, using word accesses is preferable since it may eliminate 939 subsequent memory access if subsequent accesses occur to other fields in the 940 same word of the structure, but to different bytes. */ 941#define SLOW_BYTE_ACCESS 1 942 943/*}}}*/ 944/*{{{ Dividing the output into sections. */ 945 946/* A C expression whose value is a string containing the assembler operation 947 that should precede instructions and read-only data. Normally `".text"' is 948 right. */ 949#define TEXT_SECTION_ASM_OP "\t.text" 950 951/* A C expression whose value is a string containing the assembler operation to 952 identify the following data as writable initialized data. Normally 953 `".data"' is right. */ 954#define DATA_SECTION_ASM_OP "\t.data" 955 956/* If defined, a C expression whose value is a string containing the 957 assembler operation to identify the following data as 958 uninitialized global data. If not defined, and neither 959 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, 960 uninitialized global data will be output in the data section if 961 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be 962 used. */ 963#define BSS_SECTION_ASM_OP "\t.section .bss" 964 965/*}}}*/ 966/*{{{ The Overall Framework of an Assembler File. */ 967 968/* A C string constant describing how to begin a comment in the target 969 assembler language. The compiler assumes that the comment will end at the 970 end of the line. */ 971#define ASM_COMMENT_START ";" 972 973/* A C string constant for text to be output before each `asm' statement or 974 group of consecutive ones. Normally this is `"#APP"', which is a comment 975 that has no effect on most assemblers but tells the GNU assembler that it 976 must check the lines that follow for all valid assembler constructs. */ 977#define ASM_APP_ON "#APP\n" 978 979/* A C string constant for text to be output after each `asm' statement or 980 group of consecutive ones. Normally this is `"#NO_APP"', which tells the 981 GNU assembler to resume making the time-saving assumptions that are valid 982 for ordinary compiler output. */ 983#define ASM_APP_OFF "#NO_APP\n" 984 985/*}}}*/ 986/*{{{ Output and Generation of Labels. */ 987 988/* Globalizing directive for a label. */ 989#define GLOBAL_ASM_OP "\t.globl " 990 991/*}}}*/ 992/*{{{ Output of Assembler Instructions. */ 993 994/* A C compound statement to output to stdio stream STREAM the assembler syntax 995 for an instruction operand X. X is an RTL expression. 996 997 CODE is a value that can be used to specify one of several ways of printing 998 the operand. It is used when identical operands must be printed differently 999 depending on the context. CODE comes from the `%' specification that was 1000 used to request printing of the operand. If the specification was just 1001 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is 1002 the ASCII code for LTR. 1003 1004 If X is a register, this macro should print the register's name. The names 1005 can be found in an array `reg_names' whose type is `char *[]'. `reg_names' 1006 is initialized from `REGISTER_NAMES'. 1007 1008 When the machine description has a specification `%PUNCT' (a `%' followed by 1009 a punctuation character), this macro is called with a null pointer for X and 1010 the punctuation character for CODE. */ 1011#define PRINT_OPERAND(STREAM, X, CODE) fr30_print_operand (STREAM, X, CODE) 1012 1013/* A C expression which evaluates to true if CODE is a valid punctuation 1014 character for use in the `PRINT_OPERAND' macro. If 1015 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation 1016 characters (except for the standard one, `%') are used in this way. */ 1017#define PRINT_OPERAND_PUNCT_VALID_P(CODE) (CODE == '#') 1018 1019/* A C compound statement to output to stdio stream STREAM the assembler syntax 1020 for an instruction operand that is a memory reference whose address is X. X 1021 is an RTL expression. */ 1022 1023#define PRINT_OPERAND_ADDRESS(STREAM, X) fr30_print_operand_address (STREAM, X) 1024 1025/* If defined, C string expressions to be used for the `%R', `%L', `%U', and 1026 `%I' options of `asm_fprintf' (see `final.c'). These are useful when a 1027 single `md' file must support multiple assembler formats. In that case, the 1028 various `tm.h' files can define these macros differently. 1029 1030 USER_LABEL_PREFIX is defined in svr4.h. */ 1031#define REGISTER_PREFIX "%" 1032#define LOCAL_LABEL_PREFIX "." 1033#define USER_LABEL_PREFIX "" 1034#define IMMEDIATE_PREFIX "" 1035 1036/*}}}*/ 1037/*{{{ Output of Dispatch Tables. */ 1038 1039/* This macro should be provided on machines where the addresses in a dispatch 1040 table are relative to the table's own address. 1041 1042 The definition should be a C statement to output to the stdio stream STREAM 1043 an assembler pseudo-instruction to generate a difference between two labels. 1044 VALUE and REL are the numbers of two internal labels. The definitions of 1045 these labels are output using `(*targetm.asm_out.internal_label)', and they must be 1046 printed in the same way here. For example, 1047 1048 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */ 1049#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ 1050fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL) 1051 1052/* This macro should be provided on machines where the addresses in a dispatch 1053 table are absolute. 1054 1055 The definition should be a C statement to output to the stdio stream STREAM 1056 an assembler pseudo-instruction to generate a reference to a label. VALUE 1057 is the number of an internal label whose definition is output using 1058 `(*targetm.asm_out.internal_label)'. For example, 1059 1060 fprintf (STREAM, "\t.word L%d\n", VALUE) */ 1061#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ 1062fprintf (STREAM, "\t.word .L%d\n", VALUE) 1063 1064/*}}}*/ 1065/*{{{ Assembler Commands for Alignment. */ 1066 1067/* A C statement to output to the stdio stream STREAM an assembler command to 1068 advance the location counter to a multiple of 2 to the POWER bytes. POWER 1069 will be a C expression of type `int'. */ 1070#define ASM_OUTPUT_ALIGN(STREAM, POWER) \ 1071 fprintf ((STREAM), "\t.p2align %d\n", (POWER)) 1072 1073/*}}}*/ 1074/*{{{ Miscellaneous Parameters. */ 1075 1076/* An alias for a machine mode name. This is the machine mode that elements of 1077 a jump-table should have. */ 1078#define CASE_VECTOR_MODE SImode 1079 1080/* The maximum number of bytes that a single instruction can move quickly from 1081 memory to memory. */ 1082#define MOVE_MAX 8 1083 1084/* A C expression which is nonzero if on this machine it is safe to "convert" 1085 an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller 1086 than INPREC) by merely operating on it as if it had only OUTPREC bits. 1087 1088 On many machines, this expression can be 1. 1089 1090 When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for 1091 which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the 1092 case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve 1093 things. */ 1094#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 1095 1096/* An alias for the machine mode for pointers. On most machines, define this 1097 to be the integer mode corresponding to the width of a hardware pointer; 1098 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines 1099 you must define this to be one of the partial integer modes, such as 1100 `PSImode'. 1101 1102 The width of `Pmode' must be at least as large as the value of 1103 `POINTER_SIZE'. If it is not equal, you must define the macro 1104 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */ 1105#define Pmode SImode 1106 1107/* An alias for the machine mode used for memory references to functions being 1108 called, in `call' RTL expressions. On most machines this should be 1109 `QImode'. */ 1110#define FUNCTION_MODE QImode 1111 1112/* If cross-compiling, don't require stdio.h etc to build libgcc.a. */ 1113#if defined CROSS_COMPILE && ! defined inhibit_libc 1114#define inhibit_libc 1115#endif 1116 1117/*}}}*/ 1118/*{{{ Exported variables */ 1119 1120/* Define the information needed to generate branch and scc insns. This is 1121 stored from the compare operation. Note that we can't use "rtx" here 1122 since it hasn't been defined! */ 1123 1124extern struct rtx_def * fr30_compare_op0; 1125extern struct rtx_def * fr30_compare_op1; 1126 1127/*}}}*/ 1128 1129/* Local Variables: */ 1130/* folded-file: t */ 1131/* End: */ 1132