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1.1 ! root 1: /* Definitions of target machine for GNU compiler, for SPUR chip. ! 2: Copyright (C) 1988 Free Software Foundation, Inc. ! 3: ! 4: This file is part of GNU CC. ! 5: ! 6: GNU CC is free software; you can redistribute it and/or modify ! 7: it under the terms of the GNU General Public License as published by ! 8: the Free Software Foundation; either version 2, or (at your option) ! 9: any later version. ! 10: ! 11: GNU CC is distributed in the hope that it will be useful, ! 12: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 14: GNU General Public License for more details. ! 15: ! 16: You should have received a copy of the GNU General Public License ! 17: along with GNU CC; see the file COPYING. If not, write to ! 18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 19: ! 20: ! 21: /* Note that some other tm.h files include this one and then override ! 22: many of the definitions that relate to assembler syntax. */ ! 23: ! 24: ! 25: /* Names to predefine in the preprocessor for this target machine. */ ! 26: ! 27: #define CPP_PREDEFINES "-Dspur" ! 28: ! 29: /* Link with libg.a when debugging, for dbx's sake. */ ! 30: ! 31: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} " ! 32: ! 33: /* Print subsidiary information on the compiler version in use. */ ! 34: #define TARGET_VERSION fprintf (stderr, " (spur)"); ! 35: ! 36: /* Run-time compilation parameters selecting different hardware subsets. ! 37: ! 38: On the SPUR, we don't yet need any. */ ! 39: ! 40: extern int target_flags; ! 41: ! 42: /* Nonzero if we should generate code to use the fpu. */ ! 43: #define TARGET_FPU (target_flags & 1) ! 44: ! 45: /* Nonzero if we should expand constant shifts into series of shift ! 46: instructions. */ ! 47: #define TARGET_EXPAND_SHIFTS (target_flags & 2) ! 48: ! 49: /* Nonzero if we should generate long jumps for compares. */ ! 50: #define TARGET_LONG_JUMPS (target_flags & 4) ! 51: ! 52: /* Macro to define tables used to set the flags. ! 53: This is a list in braces of pairs in braces, ! 54: each pair being { "NAME", VALUE } ! 55: where VALUE is the bits to set or minus the bits to clear. ! 56: An empty string NAME is used to identify the default VALUE. */ ! 57: ! 58: #define TARGET_SWITCHES \ ! 59: { {"fpu", 1}, \ ! 60: {"soft-float", -1}, \ ! 61: {"expand-shifts", 2}, \ ! 62: {"lib-shifts", -2}, \ ! 63: {"long-jumps", 4}, \ ! 64: {"short-jumps", -4}, \ ! 65: { "", TARGET_DEFAULT}} ! 66: ! 67: #define TARGET_DEFAULT 0 ! 68: ! 69: /* target machine storage layout */ ! 70: ! 71: /* Define this if most significant bit is lowest numbered ! 72: in instructions that operate on numbered bit-fields. ! 73: This is a moot question on the SPUR due to the lack of bit-field insns. */ ! 74: #define BITS_BIG_ENDIAN 0 ! 75: ! 76: /* Define this if most significant byte of a word is the lowest numbered. */ ! 77: /* That is not true on SPUR. */ ! 78: #define BYTES_BIG_ENDIAN 0 ! 79: ! 80: /* Define this if most significant word of a multiword number is the lowest ! 81: numbered. */ ! 82: /* For SPUR we can decide arbitrarily ! 83: since there are no machine instructions for them. */ ! 84: #define WORDS_BIG_ENDIAN 0 ! 85: ! 86: /* number of bits in an addressible storage unit */ ! 87: #define BITS_PER_UNIT 8 ! 88: ! 89: /* Width in bits of a "word", which is the contents of a machine register. ! 90: Note that this is not necessarily the width of data type `int'; ! 91: if using 16-bit ints on a 68000, this would still be 32. ! 92: But on a machine with 16-bit registers, this would be 16. */ ! 93: #define BITS_PER_WORD 32 ! 94: ! 95: /* Width of a word, in units (bytes). */ ! 96: #define UNITS_PER_WORD 4 ! 97: ! 98: /* Width in bits of a pointer. ! 99: See also the macro `Pmode' defined below. */ ! 100: #define POINTER_SIZE 32 ! 101: ! 102: /* Allocation boundary (in *bits*) for storing arguments in argument list. */ ! 103: #define PARM_BOUNDARY 64 ! 104: ! 105: /* Boundary (in *bits*) on which stack pointer should be aligned. */ ! 106: #define STACK_BOUNDARY 64 ! 107: ! 108: /* Allocation boundary (in *bits*) for the code of a function. */ ! 109: #define FUNCTION_BOUNDARY 32 ! 110: ! 111: /* Alignment of field after `int : 0' in a structure. */ ! 112: #define EMPTY_FIELD_BOUNDARY 32 ! 113: ! 114: /* Every structure's size must be a multiple of this. */ ! 115: #define STRUCTURE_SIZE_BOUNDARY 32 ! 116: ! 117: /* No data type wants to be aligned rounder than this. */ ! 118: #define BIGGEST_ALIGNMENT 64 ! 119: ! 120: /* Define this if move instructions will actually fail to work ! 121: when given unaligned data. */ ! 122: #define STRICT_ALIGNMENT ! 123: ! 124: /* Standard register usage. */ ! 125: ! 126: /* Number of actual hardware registers. ! 127: The hardware registers are assigned numbers for the compiler ! 128: from 0 to just below FIRST_PSEUDO_REGISTER. ! 129: All registers that the compiler knows about must be given numbers, ! 130: even those that are not normally considered general registers. ! 131: ! 132: SPUR has 32 fullword registers and 15 floating point registers. */ ! 133: ! 134: #define FIRST_PSEUDO_REGISTER 47 ! 135: ! 136: /* 1 for registers that have pervasive standard uses ! 137: and are not available for the register allocator. ! 138: On SPUR, this includes all the global registers ! 139: and the callee return address register. */ ! 140: #define FIXED_REGISTERS \ ! 141: {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ ! 142: 1, 0, 0, 0, 0, 0, \ ! 143: 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, \ ! 144: 1, 0, 0, 0, 0, 0, \ ! 145: 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} ! 146: ! 147: /* 1 for registers not available across function calls. ! 148: These must include the FIXED_REGISTERS and also any ! 149: registers that can be used without being saved. ! 150: The latter must include the registers where values are returned ! 151: and the register where structure-value addresses are passed. ! 152: Aside from that, you can include as many other registers as you like. */ ! 153: #define CALL_USED_REGISTERS \ ! 154: {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ ! 155: 1, 0, 0, 0, 0, 0, \ ! 156: 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, \ ! 157: 1, 1, 1, 1, 1, 1, \ ! 158: 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0} ! 159: ! 160: /* Return number of consecutive hard regs needed starting at reg REGNO ! 161: to hold something of mode MODE. ! 162: This is ordinarily the length in words of a value of mode MODE ! 163: but can be less for certain modes in special long registers. ! 164: ! 165: On SPUR, ordinary registers hold 32 bits worth; ! 166: a single floating point register is always enough for ! 167: anything that can be stored in them at all. */ ! 168: #define HARD_REGNO_NREGS(REGNO, MODE) \ ! 169: ((REGNO) >= 32 ? GET_MODE_NUNITS ((MODE)) \ ! 170: : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) ! 171: ! 172: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. ! 173: On SPUR, the cpu registers can hold any mode but the float registers ! 174: can hold only floating point. And they can't hold anything if use ! 175: of hardware floating point is disabled. */ ! 176: #define HARD_REGNO_MODE_OK(REGNO, MODE) \ ! 177: (((REGNO) < 32 \ ! 178: && (REGNO) + ((GET_MODE_UNIT_SIZE ((MODE)) + 3) / 4) <= 32) \ ! 179: || (TARGET_FPU && ((MODE) == SFmode || (MODE) == DFmode \ ! 180: || (MODE) == SCmode || (MODE) == DCmode))) ! 181: ! 182: /* Value is 1 if it is a good idea to tie two pseudo registers ! 183: when one has mode MODE1 and one has mode MODE2. ! 184: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, ! 185: for any hard reg, then this must be 0 for correct output. */ ! 186: #define MODES_TIEABLE_P(MODE1, MODE2) \ ! 187: (((MODE1) == SFmode || (MODE1) == DFmode \ ! 188: || (MODE1) == SCmode || (MODE1) == DCmode) \ ! 189: == ((MODE2) == SFmode || (MODE2) == DFmode \ ! 190: || (MODE2) == SCmode || (MODE2) == DCmode)) ! 191: ! 192: /* Specify the registers used for certain standard purposes. ! 193: The values of these macros are register numbers. */ ! 194: ! 195: /* SPUR pc isn't overloaded on a register that the compiler knows about. */ ! 196: /* #define PC_REGNUM */ ! 197: ! 198: /* Register to use for pushing function arguments. */ ! 199: #define STACK_POINTER_REGNUM 4 ! 200: ! 201: /* Base register for access to local variables of the function. */ ! 202: #define FRAME_POINTER_REGNUM 25 ! 203: ! 204: /* Value should be nonzero if functions must have frame pointers. ! 205: Zero means the frame pointer need not be set up (and parms ! 206: may be accessed via the stack pointer) in functions that seem suitable. ! 207: This is computed in `reload', in reload1.c. */ ! 208: #define FRAME_POINTER_REQUIRED 1 ! 209: ! 210: /* Base register for access to arguments of the function. */ ! 211: #define ARG_POINTER_REGNUM 25 ! 212: ! 213: /* Register in which static-chain is passed to a function. */ ! 214: /* ??? */ ! 215: #define STATIC_CHAIN_REGNUM 8 ! 216: ! 217: /* Register in which address to store a structure value ! 218: is passed to a function. */ ! 219: #define STRUCT_VALUE_REGNUM 27 ! 220: #define STRUCT_VALUE_INCOMING_REGNUM 11 ! 221: ! 222: /* Define the classes of registers for register constraints in the ! 223: machine description. Also define ranges of constants. ! 224: ! 225: One of the classes must always be named ALL_REGS and include all hard regs. ! 226: If there is more than one class, another class must be named NO_REGS ! 227: and contain no registers. ! 228: ! 229: The name GENERAL_REGS must be the name of a class (or an alias for ! 230: another name such as ALL_REGS). This is the class of registers ! 231: that is allowed by "g" or "r" in a register constraint. ! 232: Also, registers outside this class are allocated only when ! 233: instructions express preferences for them. ! 234: ! 235: The classes must be numbered in nondecreasing order; that is, ! 236: a larger-numbered class must never be contained completely ! 237: in a smaller-numbered class. ! 238: ! 239: For any two classes, it is very desirable that there be another ! 240: class that represents their union. */ ! 241: ! 242: /* The 68000 has two kinds of registers, hence four classes. */ ! 243: ! 244: enum reg_class { NO_REGS, GENERAL_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES }; ! 245: ! 246: #define N_REG_CLASSES (int) LIM_REG_CLASSES ! 247: ! 248: /* Give names of register classes as strings for dump file. */ ! 249: ! 250: #define REG_CLASS_NAMES \ ! 251: {"NO_REGS", "GENERAL_REGS", "FP_REGS", "ALL_REGS" } ! 252: ! 253: /* Define which registers fit in which classes. ! 254: This is an initializer for a vector of HARD_REG_SET ! 255: of length N_REG_CLASSES. */ ! 256: ! 257: #define REG_CLASS_CONTENTS {{0, 0}, {-1, 0}, {0, 0x7fff}, {-1, 0x7fff}} ! 258: ! 259: /* The same information, inverted: ! 260: Return the class number of the smallest class containing ! 261: reg number REGNO. This could be a conditional expression ! 262: or could index an array. */ ! 263: ! 264: #define REGNO_REG_CLASS(REGNO) \ ! 265: ((REGNO) >= 32 ? FP_REGS : GENERAL_REGS) ! 266: ! 267: /* The class value for index registers, and the one for base regs. */ ! 268: #define INDEX_REG_CLASS GENERAL_REGS ! 269: #define BASE_REG_CLASS GENERAL_REGS ! 270: ! 271: /* Get reg_class from a letter such as appears in the machine description. */ ! 272: ! 273: #define REG_CLASS_FROM_LETTER(C) \ ! 274: ((C) == 'f' ? FP_REGS : NO_REGS) ! 275: ! 276: /* The letters I, J, K, L and M in a register constraint string ! 277: can be used to stand for particular ranges of immediate operands. ! 278: This macro defines what the ranges are. ! 279: C is the letter, and VALUE is a constant value. ! 280: Return 1 if VALUE is in the range specified by C. ! 281: ! 282: For SPUR, `I' is used for the range of constants an insn ! 283: can actually contain. ! 284: `J' is used for the range which is just zero (since that is R0). ! 285: `K' is used for the 5-bit operand of a compare insns. */ ! 286: ! 287: #define CONST_OK_FOR_LETTER_P(VALUE, C) \ ! 288: ((C) == 'I' ? (unsigned) ((VALUE) + 0x2000) < 0x4000 \ ! 289: : (C) == 'J' ? (VALUE) == 0 \ ! 290: : (C) == 'K' ? (unsigned) (VALUE) < 0x20 \ ! 291: : 0) ! 292: ! 293: /* Similar, but for floating constants, and defining letters G and H. ! 294: Here VALUE is the CONST_DOUBLE rtx itself. */ ! 295: ! 296: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ ! 297: ((C) == 'G' && CONST_DOUBLE_HIGH (VALUE) == 0 \ ! 298: && CONST_DOUBLE_LOW (VALUE) == 0) ! 299: ! 300: /* Given an rtx X being reloaded into a reg required to be ! 301: in class CLASS, return the class of reg to actually use. ! 302: In general this is just CLASS; but on some machines ! 303: in some cases it is preferable to use a more restrictive class. */ ! 304: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS) ! 305: ! 306: /* Return the maximum number of consecutive registers ! 307: needed to represent mode MODE in a register of class CLASS. */ ! 308: /* On SPUR, this is the size of MODE in words, ! 309: except in the FP regs, where a single reg is always enough. */ ! 310: #define CLASS_MAX_NREGS(CLASS, MODE) \ ! 311: ((CLASS) == FP_REGS ? 1 \ ! 312: : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) ! 313: ! 314: /* Stack layout; function entry, exit and calling. */ ! 315: ! 316: /* Define this if pushing a word on the stack ! 317: makes the stack pointer a smaller address. */ ! 318: #define STACK_GROWS_DOWNWARD ! 319: ! 320: /* Define this if the nominal address of the stack frame ! 321: is at the high-address end of the local variables; ! 322: that is, each additional local variable allocated ! 323: goes at a more negative offset in the frame. */ ! 324: #define FRAME_GROWS_DOWNWARD ! 325: ! 326: /* Offset within stack frame to start allocating local variables at. ! 327: If FRAME_GROWS_DOWNWARD, this is the offset to the END of the ! 328: first local allocated. Otherwise, it is the offset to the BEGINNING ! 329: of the first local allocated. */ ! 330: #define STARTING_FRAME_OFFSET 0 ! 331: ! 332: /* If we generate an insn to push BYTES bytes, ! 333: this says how many the stack pointer really advances by. ! 334: On SPUR, don't define this because there are no push insns. */ ! 335: /* #define PUSH_ROUNDING(BYTES) */ ! 336: ! 337: /* Offset of first parameter from the argument pointer register value. */ ! 338: #define FIRST_PARM_OFFSET(FNDECL) 0 ! 339: ! 340: /* Value is the number of bytes of arguments automatically ! 341: popped when returning from a subroutine call. ! 342: FUNTYPE is the data type of the function (as a tree), ! 343: or for a library call it is an identifier node for the subroutine name. ! 344: SIZE is the number of bytes of arguments passed on the stack. */ ! 345: ! 346: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0 ! 347: ! 348: /* Define how to find the value returned by a function. ! 349: VALTYPE is the data type of the value (as a tree). ! 350: If the precise function being called is known, FUNC is its FUNCTION_DECL; ! 351: otherwise, FUNC is 0. */ ! 352: ! 353: /* On SPUR the value is found in the second "output" register. */ ! 354: ! 355: #define FUNCTION_VALUE(VALTYPE, FUNC) \ ! 356: gen_rtx (REG, TYPE_MODE (VALTYPE), 27) ! 357: ! 358: /* But the called function leaves it in the second "input" register. */ ! 359: ! 360: #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \ ! 361: gen_rtx (REG, TYPE_MODE (VALTYPE), 11) ! 362: ! 363: /* Define how to find the value returned by a library function ! 364: assuming the value has mode MODE. */ ! 365: ! 366: #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 27) ! 367: ! 368: /* 1 if N is a possible register number for a function value ! 369: as seen by the caller. ! 370: On SPUR, the first "output" reg is the only register thus used. */ ! 371: ! 372: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 27) ! 373: ! 374: /* 1 if N is a possible register number for function argument passing. ! 375: On SPUR, these are the "output" registers. */ ! 376: ! 377: #define FUNCTION_ARG_REGNO_P(N) ((N) < 32 && (N) > 26) ! 378: ! 379: /* Define a data type for recording info about an argument list ! 380: during the scan of that argument list. This data type should ! 381: hold all necessary information about the function itself ! 382: and about the args processed so far, enough to enable macros ! 383: such as FUNCTION_ARG to determine where the next arg should go. ! 384: ! 385: On SPUR, this is a single integer, which is a number of words ! 386: of arguments scanned so far (including the invisible argument, ! 387: if any, which holds the structure-value-address). ! 388: Thus 5 or more means all following args should go on the stack. */ ! 389: ! 390: #define CUMULATIVE_ARGS int ! 391: ! 392: /* Initialize a variable CUM of type CUMULATIVE_ARGS ! 393: for a call to a function whose data type is FNTYPE. ! 394: For a library call, FNTYPE is 0. ! 395: ! 396: On SPUR, the offset normally starts at 0, but starts at 4 bytes ! 397: when the function gets a structure-value-address as an ! 398: invisible first argument. */ ! 399: ! 400: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \ ! 401: ((CUM) = ((FNTYPE) != 0 && aggregate_value_p ((FNTYPE)))) ! 402: ! 403: /* Update the data in CUM to advance over an argument ! 404: of mode MODE and data type TYPE. ! 405: (TYPE is null for libcalls where that information may not be available.) */ ! 406: ! 407: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ ! 408: ((CUM) += ((MODE) != BLKmode \ ! 409: ? (GET_MODE_SIZE (MODE) + 3) / 4 \ ! 410: : (int_size_in_bytes (TYPE) + 3) / 4)) ! 411: ! 412: /* Determine where to put an argument to a function. ! 413: Value is zero to push the argument on the stack, ! 414: or a hard register in which to store the argument. ! 415: ! 416: MODE is the argument's machine mode. ! 417: TYPE is the data type of the argument (as a tree). ! 418: This is null for libcalls where that information may ! 419: not be available. ! 420: CUM is a variable of type CUMULATIVE_ARGS which gives info about ! 421: the preceding args and about the function being called. ! 422: NAMED is nonzero if this argument is a named parameter ! 423: (otherwise it is an extra parameter matching an ellipsis). */ ! 424: ! 425: /* On SPUR the first five words of args are normally in registers ! 426: and the rest are pushed. But any arg that won't entirely fit in regs ! 427: is pushed. */ ! 428: ! 429: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ ! 430: (5 >= ((CUM) \ ! 431: + ((MODE) == BLKmode \ ! 432: ? (int_size_in_bytes (TYPE) + 3) / 4 \ ! 433: : (GET_MODE_SIZE (MODE) + 3) / 4)) \ ! 434: ? gen_rtx (REG, (MODE), 27 + (CUM)) \ ! 435: : 0) ! 436: ! 437: /* Define where a function finds its arguments. ! 438: This is different from FUNCTION_ARG because of register windows. */ ! 439: ! 440: #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \ ! 441: (5 >= ((CUM) \ ! 442: + ((MODE) == BLKmode \ ! 443: ? (int_size_in_bytes (TYPE) + 3) / 4 \ ! 444: : (GET_MODE_SIZE (MODE) + 3) / 4)) \ ! 445: ? gen_rtx (REG, (MODE), 11 + (CUM)) \ ! 446: : 0) ! 447: ! 448: /* For an arg passed partly in registers and partly in memory, ! 449: this is the number of registers used. ! 450: For args passed entirely in registers or entirely in memory, zero. */ ! 451: ! 452: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0 ! 453: ! 454: /* This macro generates the assembly code for function entry. ! 455: FILE is a stdio stream to output the code to. ! 456: SIZE is an int: how many units of temporary storage to allocate. ! 457: Refer to the array `regs_ever_live' to determine which registers ! 458: to save; `regs_ever_live[I]' is nonzero if register number I ! 459: is ever used in the function. This macro is responsible for ! 460: knowing which registers should not be saved even if used. */ ! 461: ! 462: /* On spur, move-double insns between fpu and cpu need an 8-byte block ! 463: of memory. If any fpu reg is used in the function, we allocate ! 464: such a block here, at the bottom of the frame, just in case it's needed. */ ! 465: ! 466: #define FUNCTION_PROLOGUE(FILE, SIZE) \ ! 467: { \ ! 468: extern char call_used_regs[]; \ ! 469: extern int current_function_pretend_args_size; \ ! 470: int fsize = ((SIZE) + 7) & ~7; \ ! 471: int nregs, i, fp_used = 0; \ ! 472: for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ ! 473: { \ ! 474: if (regs_ever_live[i] && ! call_used_regs[i]) \ ! 475: nregs++; \ ! 476: if (regs_ever_live[i]) fp_used = 1; \ ! 477: } \ ! 478: if (fp_used) fsize += 8; \ ! 479: fprintf (FILE, "0:\trd_special r24,pc\n"); \ ! 480: fprintf (FILE, "\tand r24,r24,$~0x3\n"); \ ! 481: fprintf (FILE, "\tadd_nt r25,r4,$%d\n", \ ! 482: - current_function_pretend_args_size); \ ! 483: if (fsize + nregs != 0 || current_function_pretend_args_size > 0)\ ! 484: { \ ! 485: int n = - fsize - nregs * 16; \ ! 486: if (n >= -8192) \ ! 487: fprintf (FILE, "\tadd_nt r4,r25,$%d\n", n); \ ! 488: else \ ! 489: { \ ! 490: fprintf (FILE, "\tadd_nt r4,r25,$-8192\n"); \ ! 491: n += 8192; \ ! 492: while (n < -8192) \ ! 493: fprintf (FILE, "\tadd_nt r4,r4,$-8192\n"), n += 8192; \ ! 494: if (n != 0) \ ! 495: fprintf (FILE, "\tadd_nt r4,r4,$%d\n", n); \ ! 496: } \ ! 497: } \ ! 498: for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ ! 499: if (regs_ever_live[i] && ! call_used_regs[i]) \ ! 500: { \ ! 501: fprintf (FILE, "\tst_ext1 %s,r4,$%d\n", \ ! 502: reg_names[i], 8 * nregs++); \ ! 503: fprintf (FILE, "\tst_ext2 %s,r4,$%d\n", \ ! 504: reg_names[i], 8 * nregs++); \ ! 505: } \ ! 506: } ! 507: ! 508: /* Output assembler code to FILE to increment profiler label # LABELNO ! 509: for profiling a function entry. */ ! 510: ! 511: #define FUNCTION_PROFILER(FILE, LABELNO) \ ! 512: abort (); ! 513: ! 514: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, ! 515: the stack pointer does not matter. The value is tested only in ! 516: functions that have frame pointers. ! 517: No definition is equivalent to always zero. */ ! 518: ! 519: extern int current_function_calls_alloca; ! 520: extern int current_function_pretend_args_size; ! 521: ! 522: #define EXIT_IGNORE_STACK \ ! 523: (get_frame_size () != 0 \ ! 524: || current_function_calls_alloca || current_function_pretend_args_size) ! 525: ! 526: /* This macro generates the assembly code for function exit, ! 527: on machines that need it. If FUNCTION_EPILOGUE is not defined ! 528: then individual return instructions are generated for each ! 529: return statement. Args are same as for FUNCTION_PROLOGUE. ! 530: ! 531: The function epilogue should not depend on the current stack pointer! ! 532: It should use the frame pointer only. This is mandatory because ! 533: of alloca; we also take advantage of it to omit stack adjustments ! 534: before returning. */ ! 535: ! 536: #define FUNCTION_EPILOGUE(FILE, SIZE) \ ! 537: { \ ! 538: extern char call_used_regs[]; \ ! 539: extern int current_function_calls_alloca; \ ! 540: extern int current_function_pretend_args_size; \ ! 541: int fsize = ((SIZE) + 7) & ~7; \ ! 542: int nregs, i, fp_used = 0; \ ! 543: for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ ! 544: { \ ! 545: if (regs_ever_live[i] && ! call_used_regs[i]) \ ! 546: nregs++; \ ! 547: if (regs_ever_live[i]) fp_used = 1; \ ! 548: } \ ! 549: if (fp_used) fsize += 8; \ ! 550: if (nregs != 0) \ ! 551: { \ ! 552: fprintf (FILE, "\tadd_nt r4,r25,$%d\n", - fsize - nregs * 16); \ ! 553: for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ ! 554: if (regs_ever_live[i] && ! call_used_regs[i]) \ ! 555: { \ ! 556: fprintf (FILE, "\tld_ext1 %s,r4,$%d\n\tnop\n", \ ! 557: reg_names[i], 8 * nregs++); \ ! 558: fprintf (FILE, "\tld_ext2 %s,r4,$%d\n\tnop\n", \ ! 559: reg_names[i], 8 * nregs++); \ ! 560: } \ ! 561: } \ ! 562: if (fsize != 0 || nregs != 0 || current_function_calls_alloca \ ! 563: || current_function_pretend_args_size > 0) \ ! 564: fprintf (FILE, "\tadd_nt r4,r25,$%d\n", \ ! 565: current_function_pretend_args_size); \ ! 566: fprintf (FILE, "\treturn r10,$8\n\tnop\n"); \ ! 567: } ! 568: ! 569: /* Addressing modes, and classification of registers for them. */ ! 570: ! 571: /* #define HAVE_POST_INCREMENT */ ! 572: /* #define HAVE_POST_DECREMENT */ ! 573: ! 574: /* #define HAVE_PRE_DECREMENT */ ! 575: /* #define HAVE_PRE_INCREMENT */ ! 576: ! 577: /* Macros to check register numbers against specific register classes. */ ! 578: ! 579: /* These assume that REGNO is a hard or pseudo reg number. ! 580: They give nonzero only if REGNO is a hard reg of the suitable class ! 581: or a pseudo reg currently allocated to a suitable hard reg. ! 582: Since they use reg_renumber, they are safe only once reg_renumber ! 583: has been allocated, which happens in local-alloc.c. */ ! 584: ! 585: #define REGNO_OK_FOR_INDEX_P(REGNO) \ ! 586: ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) ! 587: #define REGNO_OK_FOR_BASE_P(REGNO) \ ! 588: ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) ! 589: #define REGNO_OK_FOR_FP_P(REGNO) \ ! 590: (((REGNO) ^ 0x20) < 14 || (unsigned) (reg_renumber[REGNO] ^ 0x20) < 14) ! 591: ! 592: /* Now macros that check whether X is a register and also, ! 593: strictly, whether it is in a specified class. ! 594: ! 595: These macros are specific to the SPUR, and may be used only ! 596: in code for printing assembler insns and in conditions for ! 597: define_optimization. */ ! 598: ! 599: /* 1 if X is an fp register. */ ! 600: ! 601: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X))) ! 602: ! 603: /* Maximum number of registers that can appear in a valid memory address. */ ! 604: ! 605: #define MAX_REGS_PER_ADDRESS 2 ! 606: ! 607: /* Recognize any constant value that is a valid address. */ ! 608: ! 609: #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) ! 610: ! 611: /* Nonzero if the constant value X is a legitimate general operand. ! 612: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ ! 613: ! 614: #define LEGITIMATE_CONSTANT_P(X) \ ! 615: ((GET_CODE (X) == CONST_INT \ ! 616: && (unsigned) (INTVAL (X) + 0x2000) < 0x4000)\ ! 617: || (GET_CODE (X) == SYMBOL_REF && (X)->unchanging)) ! 618: ! 619: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx ! 620: and check its validity for a certain class. ! 621: We have two alternate definitions for each of them. ! 622: The usual definition accepts all pseudo regs; the other rejects ! 623: them unless they have been allocated suitable hard regs. ! 624: The symbol REG_OK_STRICT causes the latter definition to be used. ! 625: ! 626: Most source files want to accept pseudo regs in the hope that ! 627: they will get allocated to the class that the insn wants them to be in. ! 628: Source files for reload pass need to be strict. ! 629: After reload, it makes no difference, since pseudo regs have ! 630: been eliminated by then. */ ! 631: ! 632: #ifndef REG_OK_STRICT ! 633: ! 634: /* Nonzero if X is a hard reg that can be used as an index ! 635: or if it is a pseudo reg. */ ! 636: #define REG_OK_FOR_INDEX_P(X) (((unsigned) REGNO (X)) - 32 >= 14) ! 637: /* Nonzero if X is a hard reg that can be used as a base reg ! 638: or if it is a pseudo reg. */ ! 639: #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) - 32 >= 14) ! 640: ! 641: #else ! 642: ! 643: /* Nonzero if X is a hard reg that can be used as an index. */ ! 644: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) ! 645: /* Nonzero if X is a hard reg that can be used as a base reg. */ ! 646: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) ! 647: ! 648: #endif ! 649: ! 650: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression ! 651: that is a valid memory address for an instruction. ! 652: The MODE argument is the machine mode for the MEM expression ! 653: that wants to use this address. ! 654: ! 655: On SPUR, the actual legitimate addresses must be REG+SMALLINT or REG+REG. ! 656: Actually, REG+REG is not legitimate for stores, so ! 657: it is obtained only by combination on loads. ! 658: We can treat a SYMBOL_REF as legitimate if it is part of this ! 659: function's constant-pool, because such addresses can actually ! 660: be output as REG+SMALLINT. */ ! 661: ! 662: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ ! 663: { if (GET_CODE (X) == REG \ ! 664: && REG_OK_FOR_BASE_P (X)) \ ! 665: goto ADDR; \ ! 666: if (GET_CODE (X) == SYMBOL_REF && (X)->unchanging) \ ! 667: goto ADDR; \ ! 668: if (GET_CODE (X) == PLUS \ ! 669: && GET_CODE (XEXP (X, 0)) == REG \ ! 670: && REG_OK_FOR_BASE_P (XEXP (X, 0))) \ ! 671: { \ ! 672: if (GET_CODE (XEXP (X, 1)) == CONST_INT \ ! 673: && INTVAL (XEXP (X, 1)) >= -0x2000 \ ! 674: && INTVAL (XEXP (X, 1)) < 0x2000) \ ! 675: goto ADDR; \ ! 676: } \ ! 677: } ! 678: ! 679: /* Try machine-dependent ways of modifying an illegitimate address ! 680: to be legitimate. If we find one, return the new, valid address. ! 681: This macro is used in only one place: `memory_address' in explow.c. ! 682: ! 683: OLDX is the address as it was before break_out_memory_refs was called. ! 684: In some cases it is useful to look at this to decide what needs to be done. ! 685: ! 686: MODE and WIN are passed so that this macro can use ! 687: GO_IF_LEGITIMATE_ADDRESS. ! 688: ! 689: It is always safe for this macro to do nothing. It exists to recognize ! 690: opportunities to optimize the output. */ ! 691: ! 692: /* On SPUR, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */ ! 693: ! 694: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ ! 695: { if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \ ! 696: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \ ! 697: copy_to_mode_reg (SImode, XEXP (X, 1))); \ ! 698: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \ ! 699: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \ ! 700: copy_to_mode_reg (SImode, XEXP (X, 0))); \ ! 701: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \ ! 702: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \ ! 703: force_operand (XEXP (X, 0), 0)); \ ! 704: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \ ! 705: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \ ! 706: force_operand (XEXP (X, 1), 0)); \ ! 707: if (memory_address_p (MODE, X)) \ ! 708: goto WIN; } ! 709: ! 710: /* Go to LABEL if ADDR (a legitimate address expression) ! 711: has an effect that depends on the machine mode it is used for. ! 712: On the SPUR this is never true. */ ! 713: ! 714: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) ! 715: ! 716: /* Specify the machine mode that this machine uses ! 717: for the index in the tablejump instruction. */ ! 718: #define CASE_VECTOR_MODE SImode ! 719: ! 720: /* Define this if the tablejump instruction expects the table ! 721: to contain offsets from the address of the table. ! 722: Do not define this if the table should contain absolute addresses. */ ! 723: /* #define CASE_VECTOR_PC_RELATIVE */ ! 724: ! 725: /* Specify the tree operation to be used to convert reals to integers. */ ! 726: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR ! 727: ! 728: /* This is the kind of divide that is easiest to do in the general case. */ ! 729: #define EASY_DIV_EXPR TRUNC_DIV_EXPR ! 730: ! 731: /* Define this as 1 if `char' should by default be signed; else as 0. */ ! 732: #define DEFAULT_SIGNED_CHAR 0 ! 733: ! 734: /* Max number of bytes we can move from memory to memory ! 735: in one reasonably fast instruction. */ ! 736: #define MOVE_MAX 4 ! 737: ! 738: /* Nonzero if access to memory by bytes is slow and undesirable. */ ! 739: #define SLOW_BYTE_ACCESS 1 ! 740: ! 741: /* This is BSD, so it wants DBX format. */ ! 742: #define DBX_DEBUGGING_INFO ! 743: ! 744: /* Do not break .stabs pseudos into continuations. */ ! 745: #define DBX_CONTIN_LENGTH 0 ! 746: ! 747: /* Don't try to use the `x' type-cross-reference character in DBX data. ! 748: Also has the consequence of putting each struct, union or enum ! 749: into a separate .stabs, containing only cross-refs to the others. */ ! 750: #define DBX_NO_XREFS ! 751: ! 752: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits ! 753: is done just by pretending it is already truncated. */ ! 754: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 ! 755: ! 756: /* Specify the machine mode that pointers have. ! 757: After generation of rtl, the compiler makes no further distinction ! 758: between pointers and any other objects of this machine mode. */ ! 759: #define Pmode SImode ! 760: ! 761: /* A function address in a call instruction ! 762: is a byte address (for indexing purposes) ! 763: so give the MEM rtx a byte's mode. */ ! 764: #define FUNCTION_MODE SImode ! 765: ! 766: /* Define this if addresses of constant functions ! 767: shouldn't be put through pseudo regs where they can be cse'd. ! 768: Desirable on machines where ordinary constants are expensive ! 769: but a CALL with constant address is cheap. */ ! 770: #define NO_FUNCTION_CSE ! 771: ! 772: /* Compute the cost of computing a constant rtl expression RTX ! 773: whose rtx-code is CODE. The body of this macro is a portion ! 774: of a switch statement. If the code is computed here, ! 775: return it with a return statement. Otherwise, break from the switch. */ ! 776: ! 777: #define CONST_COSTS(RTX,CODE) \ ! 778: case CONST_INT: \ ! 779: if (INTVAL (RTX) < 0x2000 && INTVAL (RTX) >= -0x2000) return 1; \ ! 780: case CONST: \ ! 781: case LABEL_REF: \ ! 782: case SYMBOL_REF: \ ! 783: return 2; \ ! 784: case CONST_DOUBLE: \ ! 785: return 4; ! 786: ! 787: /* Tell final.c how to eliminate redundant test instructions. */ ! 788: ! 789: /* Here we define machine-dependent flags and fields in cc_status ! 790: (see `conditions.h'). */ ! 791: ! 792: /* (None are needed on SPUR.) */ ! 793: ! 794: /* Store in cc_status the expressions ! 795: that the condition codes will describe ! 796: after execution of an instruction whose pattern is EXP. ! 797: Do not alter them if the instruction would not alter the cc's. */ ! 798: ! 799: /* The SPUR does not really have a condition code. */ ! 800: ! 801: #define NOTICE_UPDATE_CC(EXP, INSN) \ ! 802: { CC_STATUS_INIT; } ! 803: ! 804: /* Control the assembler format that we output. */ ! 805: ! 806: /* Output at beginning of assembler file. */ ! 807: ! 808: #define ASM_FILE_START(FILE) ! 809: ! 810: /* Output to assembler file text saying following lines ! 811: may contain character constants, extra white space, comments, etc. */ ! 812: ! 813: #define ASM_APP_ON "" ! 814: ! 815: /* Output to assembler file text saying following lines ! 816: no longer contain unusual constructs. */ ! 817: ! 818: #define ASM_APP_OFF "" ! 819: ! 820: /* Output before read-only data. */ ! 821: ! 822: #define TEXT_SECTION_ASM_OP ".text" ! 823: ! 824: /* Output before writable data. */ ! 825: ! 826: #define DATA_SECTION_ASM_OP ".data" ! 827: ! 828: /* How to refer to registers in assembler output. ! 829: This sequence is indexed by compiler's hard-register-number (see above). */ ! 830: ! 831: #define REGISTER_NAMES \ ! 832: {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", \ ! 833: "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \ ! 834: "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \ ! 835: "r30", "r31", \ ! 836: "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", \ ! 837: "f10", "f11", "f12", "f13", "f14" } ! 838: ! 839: /* How to renumber registers for dbx and gdb. */ ! 840: ! 841: #define DBX_REGISTER_NUMBER(REGNO) (REGNO) ! 842: ! 843: /* This is how to output the definition of a user-level label named NAME, ! 844: such as the label on a static function or variable NAME. */ ! 845: ! 846: #define ASM_OUTPUT_LABEL(FILE,NAME) \ ! 847: do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) ! 848: ! 849: /* This is how to output a command to make the user-level label named NAME ! 850: defined for reference from other files. */ ! 851: ! 852: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \ ! 853: do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0) ! 854: ! 855: /* This is how to output a reference to a user-level label named NAME. ! 856: `assemble_name' uses this. */ ! 857: ! 858: #define ASM_OUTPUT_LABELREF(FILE,NAME) \ ! 859: fprintf (FILE, "_%s", NAME) ! 860: ! 861: /* This is how to output an internal numbered label where ! 862: PREFIX is the class of label and NUM is the number within the class. */ ! 863: ! 864: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ ! 865: fprintf (FILE, "%s%d:\n", PREFIX, NUM) ! 866: ! 867: /* This is how to store into the string LABEL ! 868: the symbol_ref name of an internal numbered label where ! 869: PREFIX is the class of label and NUM is the number within the class. ! 870: This is suitable for output with `assemble_name'. */ ! 871: ! 872: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ ! 873: sprintf (LABEL, "*%s%d", PREFIX, NUM) ! 874: ! 875: /* This is how to output an assembler line defining a `double' constant. */ ! 876: ! 877: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 878: fprintf (FILE, "\t.double %.20e\n", (VALUE)) ! 879: ! 880: /* This is how to output an assembler line defining a `float' constant. */ ! 881: ! 882: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 883: fprintf (FILE, "\t.single %.12e\n", (VALUE)) ! 884: ! 885: /* This is how to output an assembler line defining an `int' constant. */ ! 886: ! 887: #define ASM_OUTPUT_INT(FILE,VALUE) \ ! 888: ( fprintf (FILE, "\t.long "), \ ! 889: output_addr_const (FILE, (VALUE)), \ ! 890: fprintf (FILE, "\n")) ! 891: ! 892: /* Likewise for `char' and `short' constants. */ ! 893: ! 894: #define ASM_OUTPUT_SHORT(FILE,VALUE) \ ! 895: ( fprintf (FILE, "\t.word "), \ ! 896: output_addr_const (FILE, (VALUE)), \ ! 897: fprintf (FILE, "\n")) ! 898: ! 899: #define ASM_OUTPUT_CHAR(FILE,VALUE) \ ! 900: ( fprintf (FILE, "\t.byte "), \ ! 901: output_addr_const (FILE, (VALUE)), \ ! 902: fprintf (FILE, "\n")) ! 903: ! 904: /* This is how to output an assembler line for a numeric constant byte. */ ! 905: ! 906: #define ASM_OUTPUT_BYTE(FILE,VALUE) \ ! 907: fprintf (FILE, "\t.byte 0x%x\n", (VALUE)) ! 908: ! 909: /* This is how to output code to push a register on the stack. ! 910: It need not be very fast code. */ ! 911: ! 912: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \ ! 913: fprintf (FILE, "\tadd_nt r4,r4,$-4\n\tst_32 %s,r4,$0\n", reg_names[REGNO]) ! 914: ! 915: /* This is how to output an insn to pop a register from the stack. ! 916: It need not be very fast code. */ ! 917: ! 918: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \ ! 919: fprintf (FILE, "\tld_32 %s,r4,$0\n\tadd_nt r4,r4,$4\n", reg_names[REGNO]) ! 920: ! 921: /* This is how to output an element of a case-vector that is absolute. */ ! 922: ! 923: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ ! 924: fprintf (FILE, "\t.long L%d\n", VALUE) ! 925: ! 926: /* This is how to output an element of a case-vector that is relative. ! 927: (SPUR does not use such vectors, ! 928: but we must define this macro anyway.) */ ! 929: ! 930: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ ! 931: fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL) ! 932: ! 933: /* This is how to output an assembler line ! 934: that says to advance the location counter ! 935: to a multiple of 2**LOG bytes. */ ! 936: ! 937: #define ASM_OUTPUT_ALIGN(FILE,LOG) \ ! 938: if ((LOG) != 0) \ ! 939: fprintf (FILE, "\t.align %d\n", (LOG)) ! 940: ! 941: #define ASM_OUTPUT_SKIP(FILE,SIZE) \ ! 942: fprintf (FILE, "\t.space %u\n", (SIZE)) ! 943: ! 944: /* This says how to output an assembler line ! 945: to define a global common symbol. */ ! 946: ! 947: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ ! 948: ( fputs (".comm ", (FILE)), \ ! 949: assemble_name ((FILE), (NAME)), \ ! 950: fprintf ((FILE), ",%u\n", (ROUNDED))) ! 951: ! 952: /* This says how to output an assembler line ! 953: to define a local common symbol. */ ! 954: ! 955: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ ! 956: ( fputs (".lcomm ", (FILE)), \ ! 957: assemble_name ((FILE), (NAME)), \ ! 958: fprintf ((FILE), ",%u\n", (ROUNDED))) ! 959: ! 960: /* Store in OUTPUT a string (made with alloca) containing ! 961: an assembler-name for a local static variable named NAME. ! 962: LABELNO is an integer which is different for each call. */ ! 963: ! 964: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ ! 965: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ ! 966: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) ! 967: ! 968: /* Define the parentheses used to group arithmetic operations ! 969: in assembler code. */ ! 970: ! 971: #define ASM_OPEN_PAREN "(" ! 972: #define ASM_CLOSE_PAREN ")" ! 973: ! 974: /* Define results of standard character escape sequences. */ ! 975: #define TARGET_BELL 007 ! 976: #define TARGET_BS 010 ! 977: #define TARGET_TAB 011 ! 978: #define TARGET_NEWLINE 012 ! 979: #define TARGET_VT 013 ! 980: #define TARGET_FF 014 ! 981: #define TARGET_CR 015 ! 982: ! 983: /* Print operand X (an rtx) in assembler syntax to file FILE. ! 984: CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. ! 985: For `%' followed by punctuation, CODE is the punctuation and X is null. ! 986: ! 987: On SPUR, the CODE can be `r', meaning this is a register-only operand ! 988: and an immediate zero should be represented as `r0'. */ ! 989: ! 990: #define PRINT_OPERAND(FILE, X, CODE) \ ! 991: { if (GET_CODE (X) == REG) \ ! 992: fprintf (FILE, "%s", reg_names[REGNO (X)]); \ ! 993: else if (GET_CODE (X) == MEM) \ ! 994: output_address (XEXP (X, 0)); \ ! 995: else if (GET_CODE (X) == CONST_DOUBLE) \ ! 996: abort (); \ ! 997: else if ((CODE) == 'r' && (X) == const0_rtx) \ ! 998: fprintf (FILE, "r0"); \ ! 999: else { putc ('$', FILE); output_addr_const (FILE, X); }} ! 1000: ! 1001: /* Print a memory address as an operand to reference that memory location. */ ! 1002: ! 1003: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ ! 1004: { register rtx base, index = 0; \ ! 1005: int offset = 0; \ ! 1006: register rtx addr = ADDR; \ ! 1007: if (GET_CODE (addr) == REG) \ ! 1008: { \ ! 1009: fprintf (FILE, "%s,$0", reg_names[REGNO (addr)]); \ ! 1010: } \ ! 1011: else if (GET_CODE (addr) == PLUS) \ ! 1012: { \ ! 1013: if (GET_CODE (XEXP (addr, 0)) == CONST_INT) \ ! 1014: offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\ ! 1015: else if (GET_CODE (XEXP (addr, 1)) == CONST_INT) \ ! 1016: offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\ ! 1017: else \ ! 1018: base = XEXP (addr, 0), index = XEXP (addr, 1); \ ! 1019: fprintf (FILE, "%s,", reg_names[REGNO (base)]); \ ! 1020: if (index == 0) \ ! 1021: fprintf (FILE, "$%d", offset); \ ! 1022: else \ ! 1023: fprintf (FILE, "%s,", reg_names[REGNO (index)]); \ ! 1024: } \ ! 1025: else \ ! 1026: { \ ! 1027: fprintf (FILE, "r24,$("); \ ! 1028: output_addr_const (FILE, addr); \ ! 1029: fprintf (FILE, "-0b)"); \ ! 1030: } \ ! 1031: }
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