![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to vax.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GCC 2.x] / gcc / config|
Return to vax.h CVS log | Up to [GCC 2.x] / gcc / config |
1.1 ! root 1: /* Definitions of target machine for GNU compiler. Vax version. ! 2: Copyright (C) 1987, 1988, 1991 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: /* Names to predefine in the preprocessor for this target machine. */ ! 22: ! 23: #define CPP_PREDEFINES "-Dvax -Dunix" ! 24: ! 25: /* If using g-format floating point, alter math.h. */ ! 26: ! 27: #define CPP_SPEC "%{mg:-DGFLOAT}" ! 28: ! 29: /* Choose proper libraries depending on float format. ! 30: Note that there are no profiling libraries for g-format. ! 31: Also use -lg for the sake of dbx. */ ! 32: ! 33: #define LIB_SPEC "%{g:-lg}\ ! 34: %{mg:%{lm:-lmg} -lcg \ ! 35: %{p:%eprofiling not supported with -mg\n}\ ! 36: %{pg:%eprofiling not supported with -mg\n}}\ ! 37: %{!mg:%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" ! 38: ! 39: /* Print subsidiary information on the compiler version in use. */ ! 40: ! 41: #define TARGET_VERSION fprintf (stderr, " (vax)"); ! 42: ! 43: /* Run-time compilation parameters selecting different hardware subsets. */ ! 44: ! 45: extern int target_flags; ! 46: ! 47: /* Macros used in the machine description to test the flags. */ ! 48: ! 49: /* Nonzero if compiling code that Unix assembler can assemble. */ ! 50: #define TARGET_UNIX_ASM (target_flags & 1) ! 51: ! 52: /* Nonzero if compiling with VAX-11 "C" style structure alignment */ ! 53: #define TARGET_VAXC_ALIGNMENT (target_flags & 2) ! 54: ! 55: /* Nonzero if compiling with `G'-format floating point */ ! 56: #define TARGET_G_FLOAT (target_flags & 4) ! 57: ! 58: /* Macro to define tables used to set the flags. ! 59: This is a list in braces of pairs in braces, ! 60: each pair being { "NAME", VALUE } ! 61: where VALUE is the bits to set or minus the bits to clear. ! 62: An empty string NAME is used to identify the default VALUE. */ ! 63: ! 64: #define TARGET_SWITCHES \ ! 65: { {"unix", 1}, \ ! 66: {"gnu", -1}, \ ! 67: {"vaxc-alignment", 2}, \ ! 68: {"g", 4}, \ ! 69: {"g-float", 4}, \ ! 70: {"d", -4}, \ ! 71: {"d-float", -4}, \ ! 72: { "", TARGET_DEFAULT}} ! 73: ! 74: /* Default target_flags if no switches specified. */ ! 75: ! 76: #ifndef TARGET_DEFAULT ! 77: #define TARGET_DEFAULT 1 ! 78: #endif ! 79: ! 80: /* Target machine storage layout */ ! 81: ! 82: /* Define this if most significant bit is lowest numbered ! 83: in instructions that operate on numbered bit-fields. ! 84: This is not true on the vax. */ ! 85: #define BITS_BIG_ENDIAN 0 ! 86: ! 87: /* Define this if most significant byte of a word is the lowest numbered. */ ! 88: /* That is not true on the vax. */ ! 89: #define BYTES_BIG_ENDIAN 0 ! 90: ! 91: /* Define this if most significant word of a multiword number is the lowest ! 92: numbered. */ ! 93: /* This is not true on the vax. */ ! 94: #define WORDS_BIG_ENDIAN 0 ! 95: ! 96: /* Number of bits in an addressible storage unit */ ! 97: #define BITS_PER_UNIT 8 ! 98: ! 99: /* Width in bits of a "word", which is the contents of a machine register. ! 100: Note that this is not necessarily the width of data type `int'; ! 101: if using 16-bit ints on a 68000, this would still be 32. ! 102: But on a machine with 16-bit registers, this would be 16. */ ! 103: #define BITS_PER_WORD 32 ! 104: ! 105: /* Width of a word, in units (bytes). */ ! 106: #define UNITS_PER_WORD 4 ! 107: ! 108: /* Width in bits of a pointer. ! 109: See also the macro `Pmode' defined below. */ ! 110: #define POINTER_SIZE 32 ! 111: ! 112: /* Allocation boundary (in *bits*) for storing arguments in argument list. */ ! 113: #define PARM_BOUNDARY 32 ! 114: ! 115: /* Allocation boundary (in *bits*) for the code of a function. */ ! 116: #define FUNCTION_BOUNDARY 16 ! 117: ! 118: /* Alignment of field after `int : 0' in a structure. */ ! 119: #define EMPTY_FIELD_BOUNDARY (TARGET_VAXC_ALIGNMENT ? 8 : 32) ! 120: ! 121: /* Every structure's size must be a multiple of this. */ ! 122: #define STRUCTURE_SIZE_BOUNDARY 8 ! 123: ! 124: /* A bitfield declared as `int' forces `int' alignment for the struct. */ ! 125: #define PCC_BITFIELD_TYPE_MATTERS (! TARGET_VAXC_ALIGNMENT) ! 126: ! 127: /* No data type wants to be aligned rounder than this. */ ! 128: #define BIGGEST_ALIGNMENT 32 ! 129: ! 130: /* No structure field wants to be aligned rounder than this. */ ! 131: #define BIGGEST_FIELD_ALIGNMENT (TARGET_VAXC_ALIGNMENT ? 8 : 32) ! 132: ! 133: /* Define this if move instructions will actually fail to work ! 134: when given unaligned data. */ ! 135: /* #define STRICT_ALIGNMENT */ ! 136: ! 137: /* Standard register usage. */ ! 138: ! 139: /* Number of actual hardware registers. ! 140: The hardware registers are assigned numbers for the compiler ! 141: from 0 to just below FIRST_PSEUDO_REGISTER. ! 142: All registers that the compiler knows about must be given numbers, ! 143: even those that are not normally considered general registers. */ ! 144: #define FIRST_PSEUDO_REGISTER 16 ! 145: ! 146: /* 1 for registers that have pervasive standard uses ! 147: and are not available for the register allocator. ! 148: On the vax, these are the AP, FP, SP and PC. */ ! 149: #define FIXED_REGISTERS {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1} ! 150: ! 151: /* 1 for registers not available across function calls. ! 152: These must include the FIXED_REGISTERS and also any ! 153: registers that can be used without being saved. ! 154: The latter must include the registers where values are returned ! 155: and the register where structure-value addresses are passed. ! 156: Aside from that, you can include as many other registers as you like. */ ! 157: #define CALL_USED_REGISTERS {1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1} ! 158: ! 159: /* Return number of consecutive hard regs needed starting at reg REGNO ! 160: to hold something of mode MODE. ! 161: This is ordinarily the length in words of a value of mode MODE ! 162: but can be less for certain modes in special long registers. ! 163: On the vax, all registers are one word long. */ ! 164: #define HARD_REGNO_NREGS(REGNO, MODE) \ ! 165: ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) ! 166: ! 167: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. ! 168: On the vax, all registers can hold all modes. */ ! 169: #define HARD_REGNO_MODE_OK(REGNO, MODE) 1 ! 170: ! 171: /* Value is 1 if it is a good idea to tie two pseudo registers ! 172: when one has mode MODE1 and one has mode MODE2. ! 173: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, ! 174: for any hard reg, then this must be 0 for correct output. */ ! 175: #define MODES_TIEABLE_P(MODE1, MODE2) 1 ! 176: ! 177: /* Specify the registers used for certain standard purposes. ! 178: The values of these macros are register numbers. */ ! 179: ! 180: /* Vax pc is overloaded on a register. */ ! 181: #define PC_REGNUM 15 ! 182: ! 183: /* Register to use for pushing function arguments. */ ! 184: #define STACK_POINTER_REGNUM 14 ! 185: ! 186: /* Base register for access to local variables of the function. */ ! 187: #define FRAME_POINTER_REGNUM 13 ! 188: ! 189: /* Value should be nonzero if functions must have frame pointers. ! 190: Zero means the frame pointer need not be set up (and parms ! 191: may be accessed via the stack pointer) in functions that seem suitable. ! 192: This is computed in `reload', in reload1.c. */ ! 193: #define FRAME_POINTER_REQUIRED 1 ! 194: ! 195: /* Base register for access to arguments of the function. */ ! 196: #define ARG_POINTER_REGNUM 12 ! 197: ! 198: /* Register in which static-chain is passed to a function. */ ! 199: #define STATIC_CHAIN_REGNUM 0 ! 200: ! 201: /* Register in which address to store a structure value ! 202: is passed to a function. */ ! 203: #define STRUCT_VALUE_REGNUM 1 ! 204: ! 205: /* Define the classes of registers for register constraints in the ! 206: machine description. Also define ranges of constants. ! 207: ! 208: One of the classes must always be named ALL_REGS and include all hard regs. ! 209: If there is more than one class, another class must be named NO_REGS ! 210: and contain no registers. ! 211: ! 212: The name GENERAL_REGS must be the name of a class (or an alias for ! 213: another name such as ALL_REGS). This is the class of registers ! 214: that is allowed by "g" or "r" in a register constraint. ! 215: Also, registers outside this class are allocated only when ! 216: instructions express preferences for them. ! 217: ! 218: The classes must be numbered in nondecreasing order; that is, ! 219: a larger-numbered class must never be contained completely ! 220: in a smaller-numbered class. ! 221: ! 222: For any two classes, it is very desirable that there be another ! 223: class that represents their union. */ ! 224: ! 225: /* The vax has only one kind of registers, so NO_REGS and ALL_REGS ! 226: are the only classes. */ ! 227: ! 228: enum reg_class { NO_REGS, ALL_REGS, LIM_REG_CLASSES }; ! 229: ! 230: #define N_REG_CLASSES (int) LIM_REG_CLASSES ! 231: ! 232: /* Since GENERAL_REGS is the same class as ALL_REGS, ! 233: don't give it a different class number; just make it an alias. */ ! 234: ! 235: #define GENERAL_REGS ALL_REGS ! 236: ! 237: /* Give names of register classes as strings for dump file. */ ! 238: ! 239: #define REG_CLASS_NAMES \ ! 240: {"NO_REGS", "ALL_REGS" } ! 241: ! 242: /* Define which registers fit in which classes. ! 243: This is an initializer for a vector of HARD_REG_SET ! 244: of length N_REG_CLASSES. */ ! 245: ! 246: #define REG_CLASS_CONTENTS {0, 0xffff} ! 247: ! 248: /* The same information, inverted: ! 249: Return the class number of the smallest class containing ! 250: reg number REGNO. This could be a conditional expression ! 251: or could index an array. */ ! 252: ! 253: #define REGNO_REG_CLASS(REGNO) ALL_REGS ! 254: ! 255: /* The class value for index registers, and the one for base regs. */ ! 256: ! 257: #define INDEX_REG_CLASS ALL_REGS ! 258: #define BASE_REG_CLASS ALL_REGS ! 259: ! 260: /* Get reg_class from a letter such as appears in the machine description. */ ! 261: ! 262: #define REG_CLASS_FROM_LETTER(C) NO_REGS ! 263: ! 264: /* The letters I, J, K, L and M in a register constraint string ! 265: can be used to stand for particular ranges of immediate operands. ! 266: This macro defines what the ranges are. ! 267: C is the letter, and VALUE is a constant value. ! 268: Return 1 if VALUE is in the range specified by C. ! 269: ! 270: `I' is the constant zero. */ ! 271: ! 272: #define CONST_OK_FOR_LETTER_P(VALUE, C) \ ! 273: ((C) == 'I' ? (VALUE) == 0 \ ! 274: : 0) ! 275: ! 276: /* Similar, but for floating constants, and defining letters G and H. ! 277: Here VALUE is the CONST_DOUBLE rtx itself. ! 278: ! 279: `G' is a floating-point zero. */ ! 280: ! 281: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ ! 282: ((C) == 'G' ? ((VALUE) == CONST0_RTX (DFmode) \ ! 283: || (VALUE) == CONST0_RTX (SFmode)) \ ! 284: : 0) ! 285: ! 286: /* Given an rtx X being reloaded into a reg required to be ! 287: in class CLASS, return the class of reg to actually use. ! 288: In general this is just CLASS; but on some machines ! 289: in some cases it is preferable to use a more restrictive class. */ ! 290: ! 291: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS) ! 292: ! 293: /* Return the maximum number of consecutive registers ! 294: needed to represent mode MODE in a register of class CLASS. */ ! 295: /* On the vax, this is always the size of MODE in words, ! 296: since all registers are the same size. */ ! 297: #define CLASS_MAX_NREGS(CLASS, MODE) \ ! 298: ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) ! 299: ! 300: /* Stack layout; function entry, exit and calling. */ ! 301: ! 302: /* Define this if pushing a word on the stack ! 303: makes the stack pointer a smaller address. */ ! 304: #define STACK_GROWS_DOWNWARD ! 305: ! 306: /* Define this if longjmp restores from saved registers ! 307: rather than from what setjmp saved. */ ! 308: #define LONGJMP_RESTORE_FROM_STACK ! 309: ! 310: /* Define this if the nominal address of the stack frame ! 311: is at the high-address end of the local variables; ! 312: that is, each additional local variable allocated ! 313: goes at a more negative offset in the frame. */ ! 314: #define FRAME_GROWS_DOWNWARD ! 315: ! 316: /* Offset within stack frame to start allocating local variables at. ! 317: If FRAME_GROWS_DOWNWARD, this is the offset to the END of the ! 318: first local allocated. Otherwise, it is the offset to the BEGINNING ! 319: of the first local allocated. */ ! 320: #define STARTING_FRAME_OFFSET 0 ! 321: ! 322: /* Given an rtx for the address of a frame, ! 323: return an rtx for the address of the word in the frame ! 324: that holds the dynamic chain--the previous frame's address. */ ! 325: #define DYNAMIC_CHAIN_ADDRESS(frame) \ ! 326: gen_rtx (PLUS, Pmode, frame, gen_rtx (CONST_INT, VOIDmode, 12)) ! 327: ! 328: /* If we generate an insn to push BYTES bytes, ! 329: this says how many the stack pointer really advances by. ! 330: On the vax, -(sp) pushes only the bytes of the operands. */ ! 331: #define PUSH_ROUNDING(BYTES) (BYTES) ! 332: ! 333: /* Offset of first parameter from the argument pointer register value. */ ! 334: #define FIRST_PARM_OFFSET(FNDECL) 4 ! 335: ! 336: /* Value is the number of bytes of arguments automatically ! 337: popped when returning from a subroutine call. ! 338: FUNTYPE is the data type of the function (as a tree), ! 339: or for a library call it is an identifier node for the subroutine name. ! 340: SIZE is the number of bytes of arguments passed on the stack. ! 341: ! 342: On the Vax, the RET insn always pops all the args for any function. */ ! 343: ! 344: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) (SIZE) ! 345: ! 346: /* Define how to find the value returned by a function. ! 347: VALTYPE is the data type of the value (as a tree). ! 348: If the precise function being called is known, FUNC is its FUNCTION_DECL; ! 349: otherwise, FUNC is 0. */ ! 350: ! 351: /* On the Vax the return value is in R0 regardless. */ ! 352: ! 353: #define FUNCTION_VALUE(VALTYPE, FUNC) \ ! 354: gen_rtx (REG, TYPE_MODE (VALTYPE), 0) ! 355: ! 356: /* Define how to find the value returned by a library function ! 357: assuming the value has mode MODE. */ ! 358: ! 359: /* On the Vax the return value is in R0 regardless. */ ! 360: ! 361: #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 0) ! 362: ! 363: /* Define this if PCC uses the nonreentrant convention for returning ! 364: structure and union values. */ ! 365: ! 366: #define PCC_STATIC_STRUCT_RETURN ! 367: ! 368: /* 1 if N is a possible register number for a function value. ! 369: On the Vax, R0 is the only register thus used. */ ! 370: ! 371: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) ! 372: ! 373: /* 1 if N is a possible register number for function argument passing. ! 374: On the Vax, no registers are used in this way. */ ! 375: ! 376: #define FUNCTION_ARG_REGNO_P(N) 0 ! 377: ! 378: /* Define a data type for recording info about an argument list ! 379: during the scan of that argument list. This data type should ! 380: hold all necessary information about the function itself ! 381: and about the args processed so far, enough to enable macros ! 382: such as FUNCTION_ARG to determine where the next arg should go. ! 383: ! 384: On the vax, this is a single integer, which is a number of bytes ! 385: of arguments scanned so far. */ ! 386: ! 387: #define CUMULATIVE_ARGS int ! 388: ! 389: /* Initialize a variable CUM of type CUMULATIVE_ARGS ! 390: for a call to a function whose data type is FNTYPE. ! 391: For a library call, FNTYPE is 0. ! 392: ! 393: On the vax, the offset starts at 0. */ ! 394: ! 395: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \ ! 396: ((CUM) = 0) ! 397: ! 398: /* Update the data in CUM to advance over an argument ! 399: of mode MODE and data type TYPE. ! 400: (TYPE is null for libcalls where that information may not be available.) */ ! 401: ! 402: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ ! 403: ((CUM) += ((MODE) != BLKmode \ ! 404: ? (GET_MODE_SIZE (MODE) + 3) & ~3 \ ! 405: : (int_size_in_bytes (TYPE) + 3) & ~3)) ! 406: ! 407: /* Define where to put the arguments to a function. ! 408: Value is zero to push the argument on the stack, ! 409: or a hard register in which to store the argument. ! 410: ! 411: MODE is the argument's machine mode. ! 412: TYPE is the data type of the argument (as a tree). ! 413: This is null for libcalls where that information may ! 414: not be available. ! 415: CUM is a variable of type CUMULATIVE_ARGS which gives info about ! 416: the preceding args and about the function being called. ! 417: NAMED is nonzero if this argument is a named parameter ! 418: (otherwise it is an extra parameter matching an ellipsis). */ ! 419: ! 420: /* On the vax all args are pushed. */ ! 421: ! 422: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) 0 ! 423: ! 424: /* This macro generates the assembly code for function entry. ! 425: FILE is a stdio stream to output the code to. ! 426: SIZE is an int: how many units of temporary storage to allocate. ! 427: Refer to the array `regs_ever_live' to determine which registers ! 428: to save; `regs_ever_live[I]' is nonzero if register number I ! 429: is ever used in the function. This macro is responsible for ! 430: knowing which registers should not be saved even if used. */ ! 431: ! 432: #define FUNCTION_PROLOGUE(FILE, SIZE) \ ! 433: { register int regno; \ ! 434: register int mask = 0; \ ! 435: extern char call_used_regs[]; \ ! 436: for (regno = 0; regno < FIRST_PSEUDO_REGISTER; regno++) \ ! 437: if (regs_ever_live[regno] && !call_used_regs[regno]) \ ! 438: mask |= 1 << regno; \ ! 439: fprintf (FILE, "\t.word 0x%x\n", mask); \ ! 440: MAYBE_VMS_FUNCTION_PROLOGUE(FILE) \ ! 441: if ((SIZE) >= 64) fprintf (FILE, "\tmovab %d(sp),sp\n", -SIZE);\ ! 442: else if (SIZE) fprintf (FILE, "\tsubl2 $%d,sp\n", (SIZE)); } ! 443: ! 444: /* vms.h redefines this. */ ! 445: #define MAYBE_VMS_FUNCTION_PROLOGUE(FILE) ! 446: ! 447: /* Output assembler code to FILE to increment profiler label # LABELNO ! 448: for profiling a function entry. */ ! 449: ! 450: #define FUNCTION_PROFILER(FILE, LABELNO) \ ! 451: fprintf (FILE, "\tmovab LP%d,r0\n\tjsb mcount\n", (LABELNO)); ! 452: ! 453: /* Output assembler code to FILE to initialize this source file's ! 454: basic block profiling info, if that has not already been done. */ ! 455: ! 456: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \ ! 457: fprintf (FILE, "\ttstl LPBX0\n\tjneq LPI%d\n\tpushal LPBX0\n\tcalls $1,__bb_init_func\nLPI%d:\n", \ ! 458: LABELNO, LABELNO); ! 459: ! 460: /* Output assembler code to FILE to increment the entry-count for ! 461: the BLOCKNO'th basic block in this source file. This is a real pain in the ! 462: sphincter on a VAX, since we do not want to change any of the bits in the ! 463: processor status word. The way it is done here, it is pushed onto the stack ! 464: before any flags have changed, and then the stack is fixed up to account for ! 465: the fact that the instruction to restore the flags only reads a word. ! 466: It may seem a bit clumsy, but at least it works. ! 467: */ ! 468: ! 469: #define BLOCK_PROFILER(FILE, BLOCKNO) \ ! 470: fprintf (FILE, "\tmovpsl -(sp)\n\tmovw (sp),2(sp)\n\taddl2 $2,sp\n\taddl2 $1,LPBX2+%d\n\tbicpsw $255\n\tbispsw (sp)+\n", \ ! 471: 4 * BLOCKNO) ! 472: ! 473: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, ! 474: the stack pointer does not matter. The value is tested only in ! 475: functions that have frame pointers. ! 476: No definition is equivalent to always zero. */ ! 477: ! 478: #define EXIT_IGNORE_STACK 1 ! 479: ! 480: /* This macro generates the assembly code for function exit, ! 481: on machines that need it. If FUNCTION_EPILOGUE is not defined ! 482: then individual return instructions are generated for each ! 483: return statement. Args are same as for FUNCTION_PROLOGUE. */ ! 484: ! 485: /* #define FUNCTION_EPILOGUE(FILE, SIZE) */ ! 486: ! 487: /* Store in the variable DEPTH the initial difference between the ! 488: frame pointer reg contents and the stack pointer reg contents, ! 489: as of the start of the function body. This depends on the layout ! 490: of the fixed parts of the stack frame and on how registers are saved. ! 491: ! 492: On the Vax, FRAME_POINTER_REQUIRED is always 1, so the definition of this ! 493: macro doesn't matter. But it must be defined. */ ! 494: ! 495: #define INITIAL_FRAME_POINTER_OFFSET(DEPTH) (DEPTH) = 0; ! 496: ! 497: /* Output assembler code for a block containing the constant parts ! 498: of a trampoline, leaving space for the variable parts. */ ! 499: ! 500: /* On the vax, the trampoline contains an entry mask and two instructions: ! 501: .word NN ! 502: movl $STATIC,r0 (store the functions static chain) ! 503: jmp *$FUNCTION (jump to function code at address FUNCTION) */ ! 504: ! 505: #define TRAMPOLINE_TEMPLATE(FILE) \ ! 506: { \ ! 507: ASM_OUTPUT_SHORT (FILE, const0_rtx); \ ! 508: ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x8fd0)); \ ! 509: ASM_OUTPUT_INT (FILE, const0_rtx); \ ! 510: ASM_OUTPUT_BYTE (FILE, 0x50+STATIC_CHAIN_REGNUM); \ ! 511: ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x9f17)); \ ! 512: ASM_OUTPUT_INT (FILE, const0_rtx); \ ! 513: } ! 514: ! 515: /* Length in units of the trampoline for entering a nested function. */ ! 516: ! 517: #define TRAMPOLINE_SIZE 15 ! 518: ! 519: /* Emit RTL insns to initialize the variable parts of a trampoline. ! 520: FNADDR is an RTX for the address of the function's pure code. ! 521: CXT is an RTX for the static chain value for the function. */ ! 522: ! 523: /* We copy the register-mask from the function's pure code ! 524: to the start of the trampoline. */ ! 525: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ ! 526: { \ ! 527: emit_move_insn (gen_rtx (MEM, HImode, TRAMP), \ ! 528: gen_rtx (MEM, HImode, FNADDR)); \ ! 529: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 4)), CXT);\ ! 530: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 11)), \ ! 531: plus_constant (FNADDR, 2)); \ ! 532: } ! 533: ! 534: /* Addressing modes, and classification of registers for them. */ ! 535: ! 536: #define HAVE_POST_INCREMENT ! 537: /* #define HAVE_POST_DECREMENT */ ! 538: ! 539: #define HAVE_PRE_DECREMENT ! 540: /* #define HAVE_PRE_INCREMENT */ ! 541: ! 542: /* Macros to check register numbers against specific register classes. */ ! 543: ! 544: /* These assume that REGNO is a hard or pseudo reg number. ! 545: They give nonzero only if REGNO is a hard reg of the suitable class ! 546: or a pseudo reg currently allocated to a suitable hard reg. ! 547: Since they use reg_renumber, they are safe only once reg_renumber ! 548: has been allocated, which happens in local-alloc.c. */ ! 549: ! 550: #define REGNO_OK_FOR_INDEX_P(regno) \ ! 551: ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0) ! 552: #define REGNO_OK_FOR_BASE_P(regno) \ ! 553: ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0) ! 554: ! 555: /* Maximum number of registers that can appear in a valid memory address. */ ! 556: ! 557: #define MAX_REGS_PER_ADDRESS 2 ! 558: ! 559: /* 1 if X is an rtx for a constant that is a valid address. */ ! 560: ! 561: #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X) ! 562: ! 563: /* Nonzero if the constant value X is a legitimate general operand. ! 564: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ ! 565: ! 566: #define LEGITIMATE_CONSTANT_P(X) 1 ! 567: ! 568: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx ! 569: and check its validity for a certain class. ! 570: We have two alternate definitions for each of them. ! 571: The usual definition accepts all pseudo regs; the other rejects ! 572: them unless they have been allocated suitable hard regs. ! 573: The symbol REG_OK_STRICT causes the latter definition to be used. ! 574: ! 575: Most source files want to accept pseudo regs in the hope that ! 576: they will get allocated to the class that the insn wants them to be in. ! 577: Source files for reload pass need to be strict. ! 578: After reload, it makes no difference, since pseudo regs have ! 579: been eliminated by then. */ ! 580: ! 581: #ifndef REG_OK_STRICT ! 582: ! 583: /* Nonzero if X is a hard reg that can be used as an index ! 584: or if it is a pseudo reg. */ ! 585: #define REG_OK_FOR_INDEX_P(X) 1 ! 586: /* Nonzero if X is a hard reg that can be used as a base reg ! 587: or if it is a pseudo reg. */ ! 588: #define REG_OK_FOR_BASE_P(X) 1 ! 589: ! 590: #else ! 591: ! 592: /* Nonzero if X is a hard reg that can be used as an index. */ ! 593: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) ! 594: /* Nonzero if X is a hard reg that can be used as a base reg. */ ! 595: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) ! 596: ! 597: #endif ! 598: ! 599: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression ! 600: that is a valid memory address for an instruction. ! 601: The MODE argument is the machine mode for the MEM expression ! 602: that wants to use this address. ! 603: ! 604: The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS, ! 605: except for CONSTANT_ADDRESS_P which is actually machine-independent. */ ! 606: ! 607: #ifdef NO_EXTERNAL_INDIRECT_ADDRESS ! 608: ! 609: /* Zero if this contains a (CONST (PLUS (SYMBOL_REF) (...))) and the ! 610: symbol in the SYMBOL_REF is an external symbol. */ ! 611: ! 612: #define INDIRECTABLE_CONSTANT_P(X) \ ! 613: (! (GET_CODE ((X)) == CONST \ ! 614: && GET_CODE (XEXP ((X), 0)) == PLUS \ ! 615: && GET_CODE (XEXP (XEXP ((X), 0), 0)) == SYMBOL_REF \ ! 616: && SYMBOL_REF_FLAG (XEXP (XEXP ((X), 0), 0)))) ! 617: ! 618: /* Re-definition of CONSTANT_ADDRESS_P, which is true only when there ! 619: are no SYMBOL_REFs for external symbols present. */ ! 620: ! 621: #define INDIRECTABLE_CONSTANT_ADDRESS_P(X) \ ! 622: (GET_CODE (X) == LABEL_REF \ ! 623: || (GET_CODE (X) == SYMBOL_REF && !SYMBOL_REF_FLAG (X)) \ ! 624: || (GET_CODE (X) == CONST && INDIRECTABLE_CONSTANT_P(X)) \ ! 625: || GET_CODE (X) == CONST_INT) ! 626: ! 627: ! 628: /* Non-zero if X is an address which can be indirected. External symbols ! 629: could be in a sharable image library, so we disallow those. */ ! 630: ! 631: #define INDIRECTABLE_ADDRESS_P(X) \ ! 632: (INDIRECTABLE_CONSTANT_ADDRESS_P (X) \ ! 633: || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ ! 634: || (GET_CODE (X) == PLUS \ ! 635: && GET_CODE (XEXP (X, 0)) == REG \ ! 636: && REG_OK_FOR_BASE_P (XEXP (X, 0)) \ ! 637: && INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 1)))) ! 638: ! 639: #else /* not NO_EXTERNAL_INDIRECT_ADDRESS */ ! 640: ! 641: #define INDIRECTABLE_CONSTANT_ADDRESS_P(X) CONSTANT_ADDRESS_P(X) ! 642: ! 643: /* Non-zero if X is an address which can be indirected. */ ! 644: #define INDIRECTABLE_ADDRESS_P(X) \ ! 645: (CONSTANT_ADDRESS_P (X) \ ! 646: || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ ! 647: || (GET_CODE (X) == PLUS \ ! 648: && GET_CODE (XEXP (X, 0)) == REG \ ! 649: && REG_OK_FOR_BASE_P (XEXP (X, 0)) \ ! 650: && CONSTANT_ADDRESS_P (XEXP (X, 1)))) ! 651: ! 652: #endif /* not NO_EXTERNAL_INDIRECT_ADDRESS */ ! 653: ! 654: /* Go to ADDR if X is a valid address not using indexing. ! 655: (This much is the easy part.) */ ! 656: #define GO_IF_NONINDEXED_ADDRESS(X, ADDR) \ ! 657: { register rtx xfoob = (X); \ ! 658: if (GET_CODE (xfoob) == REG) goto ADDR; \ ! 659: if (CONSTANT_ADDRESS_P (xfoob)) goto ADDR; \ ! 660: if (INDIRECTABLE_ADDRESS_P (xfoob)) goto ADDR; \ ! 661: xfoob = XEXP (X, 0); \ ! 662: if (GET_CODE (X) == MEM && INDIRECTABLE_ADDRESS_P (xfoob)) \ ! 663: goto ADDR; \ ! 664: if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC) \ ! 665: && GET_CODE (xfoob) == REG && REG_OK_FOR_BASE_P (xfoob)) \ ! 666: goto ADDR; } ! 667: ! 668: /* 1 if PROD is either a reg times size of mode MODE ! 669: or just a reg, if MODE is just one byte. ! 670: This macro's expansion uses the temporary variables xfoo0 and xfoo1 ! 671: that must be declared in the surrounding context. */ ! 672: #define INDEX_TERM_P(PROD, MODE) \ ! 673: (GET_MODE_SIZE (MODE) == 1 \ ! 674: ? (GET_CODE (PROD) == REG && REG_OK_FOR_BASE_P (PROD)) \ ! 675: : (GET_CODE (PROD) == MULT \ ! 676: && \ ! 677: (xfoo0 = XEXP (PROD, 0), xfoo1 = XEXP (PROD, 1), \ ! 678: ((GET_CODE (xfoo0) == CONST_INT \ ! 679: && INTVAL (xfoo0) == GET_MODE_SIZE (MODE) \ ! 680: && GET_CODE (xfoo1) == REG \ ! 681: && REG_OK_FOR_INDEX_P (xfoo1)) \ ! 682: || \ ! 683: (GET_CODE (xfoo1) == CONST_INT \ ! 684: && INTVAL (xfoo1) == GET_MODE_SIZE (MODE) \ ! 685: && GET_CODE (xfoo0) == REG \ ! 686: && REG_OK_FOR_INDEX_P (xfoo0)))))) ! 687: ! 688: /* Go to ADDR if X is the sum of a register ! 689: and a valid index term for mode MODE. */ ! 690: #define GO_IF_REG_PLUS_INDEX(X, MODE, ADDR) \ ! 691: { register rtx xfooa; \ ! 692: if (GET_CODE (X) == PLUS) \ ! 693: { if (GET_CODE (XEXP (X, 0)) == REG \ ! 694: && REG_OK_FOR_BASE_P (XEXP (X, 0)) \ ! 695: && (xfooa = XEXP (X, 1), \ ! 696: INDEX_TERM_P (xfooa, MODE))) \ ! 697: goto ADDR; \ ! 698: if (GET_CODE (XEXP (X, 1)) == REG \ ! 699: && REG_OK_FOR_BASE_P (XEXP (X, 1)) \ ! 700: && (xfooa = XEXP (X, 0), \ ! 701: INDEX_TERM_P (xfooa, MODE))) \ ! 702: goto ADDR; } } ! 703: ! 704: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ ! 705: { register rtx xfoo, xfoo0, xfoo1; \ ! 706: GO_IF_NONINDEXED_ADDRESS (X, ADDR); \ ! 707: if (GET_CODE (X) == PLUS) \ ! 708: { /* Handle <address>[index] represented with index-sum outermost */\ ! 709: xfoo = XEXP (X, 0); \ ! 710: if (INDEX_TERM_P (xfoo, MODE)) \ ! 711: { GO_IF_NONINDEXED_ADDRESS (XEXP (X, 1), ADDR); } \ ! 712: xfoo = XEXP (X, 1); \ ! 713: if (INDEX_TERM_P (xfoo, MODE)) \ ! 714: { GO_IF_NONINDEXED_ADDRESS (XEXP (X, 0), ADDR); } \ ! 715: /* Handle offset(reg)[index] with offset added outermost */ \ ! 716: if (INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 0))) \ ! 717: { if (GET_CODE (XEXP (X, 1)) == REG \ ! 718: && REG_OK_FOR_BASE_P (XEXP (X, 1))) \ ! 719: goto ADDR; \ ! 720: GO_IF_REG_PLUS_INDEX (XEXP (X, 1), MODE, ADDR); } \ ! 721: if (INDIRECTABLE_CONSTANT_ADDRESS_P (XEXP (X, 1))) \ ! 722: { if (GET_CODE (XEXP (X, 0)) == REG \ ! 723: && REG_OK_FOR_BASE_P (XEXP (X, 0))) \ ! 724: goto ADDR; \ ! 725: GO_IF_REG_PLUS_INDEX (XEXP (X, 0), MODE, ADDR); } } } ! 726: ! 727: /* Try machine-dependent ways of modifying an illegitimate address ! 728: to be legitimate. If we find one, return the new, valid address. ! 729: This macro is used in only one place: `memory_address' in explow.c. ! 730: ! 731: OLDX is the address as it was before break_out_memory_refs was called. ! 732: In some cases it is useful to look at this to decide what needs to be done. ! 733: ! 734: MODE and WIN are passed so that this macro can use ! 735: GO_IF_LEGITIMATE_ADDRESS. ! 736: ! 737: It is always safe for this macro to do nothing. It exists to recognize ! 738: opportunities to optimize the output. ! 739: ! 740: For the vax, nothing needs to be done. */ ! 741: ! 742: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {} ! 743: ! 744: /* Go to LABEL if ADDR (a legitimate address expression) ! 745: has an effect that depends on the machine mode it is used for. ! 746: On the VAX, the predecrement and postincrement address depend thus ! 747: (the amount of decrement or increment being the length of the operand) ! 748: and all indexed address depend thus (because the index scale factor ! 749: is the length of the operand). */ ! 750: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \ ! 751: { if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \ ! 752: goto LABEL; \ ! 753: if (GET_CODE (ADDR) == PLUS) \ ! 754: { if (CONSTANT_ADDRESS_P (XEXP (ADDR, 0)) \ ! 755: && GET_CODE (XEXP (ADDR, 1)) == REG); \ ! 756: else if (CONSTANT_ADDRESS_P (XEXP (ADDR, 1)) \ ! 757: && GET_CODE (XEXP (ADDR, 0)) == REG); \ ! 758: else goto LABEL; }} ! 759: ! 760: /* Specify the machine mode that this machine uses ! 761: for the index in the tablejump instruction. */ ! 762: #define CASE_VECTOR_MODE HImode ! 763: ! 764: /* Define this if the case instruction expects the table ! 765: to contain offsets from the address of the table. ! 766: Do not define this if the table should contain absolute addresses. */ ! 767: #define CASE_VECTOR_PC_RELATIVE ! 768: ! 769: /* Define this if the case instruction drops through after the table ! 770: when the index is out of range. Don't define it if the case insn ! 771: jumps to the default label instead. */ ! 772: #define CASE_DROPS_THROUGH ! 773: ! 774: /* Specify the tree operation to be used to convert reals to integers. */ ! 775: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR ! 776: ! 777: /* This is the kind of divide that is easiest to do in the general case. */ ! 778: #define EASY_DIV_EXPR TRUNC_DIV_EXPR ! 779: ! 780: /* Define this as 1 if `char' should by default be signed; else as 0. */ ! 781: #define DEFAULT_SIGNED_CHAR 1 ! 782: ! 783: /* This flag, if defined, says the same insns that convert to a signed fixnum ! 784: also convert validly to an unsigned one. */ ! 785: #define FIXUNS_TRUNC_LIKE_FIX_TRUNC ! 786: ! 787: /* Max number of bytes we can move from memory to memory ! 788: in one reasonably fast instruction. */ ! 789: #define MOVE_MAX 8 ! 790: ! 791: /* Define this if zero-extension is slow (more than one real instruction). */ ! 792: /* #define SLOW_ZERO_EXTEND */ ! 793: ! 794: /* Nonzero if access to memory by bytes is slow and undesirable. */ ! 795: #define SLOW_BYTE_ACCESS 0 ! 796: ! 797: /* Define if shifts truncate the shift count ! 798: which implies one can omit a sign-extension or zero-extension ! 799: of a shift count. */ ! 800: /* #define SHIFT_COUNT_TRUNCATED */ ! 801: ! 802: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits ! 803: is done just by pretending it is already truncated. */ ! 804: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 ! 805: ! 806: /* Specify the machine mode that pointers have. ! 807: After generation of rtl, the compiler makes no further distinction ! 808: between pointers and any other objects of this machine mode. */ ! 809: #define Pmode SImode ! 810: ! 811: /* A function address in a call instruction ! 812: is a byte address (for indexing purposes) ! 813: so give the MEM rtx a byte's mode. */ ! 814: #define FUNCTION_MODE QImode ! 815: ! 816: /* This machine doesn't use IEEE floats. */ ! 817: ! 818: #define TARGET_FLOAT_FORMAT VAX_FLOAT_FORMAT ! 819: ! 820: /* Compute the cost of computing a constant rtl expression RTX ! 821: whose rtx-code is CODE. The body of this macro is a portion ! 822: of a switch statement. If the code is computed here, ! 823: return it with a return statement. Otherwise, break from the switch. */ ! 824: ! 825: #define CONST_COSTS(RTX,CODE) \ ! 826: case CONST_INT: \ ! 827: /* Constant zero is super cheap due to clr instruction. */ \ ! 828: if ((RTX) == const0_rtx) return 0; \ ! 829: /* Constants of +/- 1 should also be super cheap since \ ! 830: may be used in decl/incl/aob/sob insns. */ \ ! 831: if ((RTX) == const1_rtx || (RTX) == constm1_rtx) return 0; \ ! 832: if ((unsigned) INTVAL (RTX) < 077) return 1; \ ! 833: case CONST: \ ! 834: case LABEL_REF: \ ! 835: case SYMBOL_REF: \ ! 836: return 3; \ ! 837: case CONST_DOUBLE: \ ! 838: return 5; ! 839: ! 840: /* On most VAX models, shift are almost as expensive as multiplies, so ! 841: we'd rather use multiply unless it can be done in an extremely small ! 842: sequence. */ ! 843: #define RTX_COSTS(RTX,CODE) \ ! 844: case LSHIFT: \ ! 845: case ASHIFT: \ ! 846: case ASHIFTRT: \ ! 847: case LSHIFTRT: \ ! 848: case ROTATE: \ ! 849: case ROTATERT: \ ! 850: return COSTS_N_INSNS (4); ! 851: ! 852: /* Specify the cost of a branch insn; roughly the number of extra insns that ! 853: should be added to avoid a branch. ! 854: ! 855: Branches are extremely cheap on the VAX while the shift insns often ! 856: used to replace branches can be expensive. */ ! 857: ! 858: #define BRANCH_COST 0 ! 859: ! 860: /* ! 861: * We can use the BSD C library routines for the libgcc calls that are ! 862: * still generated, since that's what they boil down to anyways. ! 863: */ ! 864: ! 865: #define UDIVSI3_LIBCALL "*udiv" ! 866: #define UMODSI3_LIBCALL "*urem" ! 867: ! 868: /* Check a `double' value for validity for a particular machine mode. */ ! 869: ! 870: /* note that it is very hard to accidently create a number that fits in a ! 871: double but not in a float, since their ranges are almost the same */ ! 872: #define CHECK_FLOAT_VALUE(mode, d) \ ! 873: if ((mode) == SFmode) \ ! 874: { \ ! 875: if ((d) > 1.7014117331926444e+38) \ ! 876: { error ("magnitude of constant too large for `float'"); \ ! 877: (d) = 1.7014117331926444e+38; } \ ! 878: else if ((d) < -1.7014117331926444e+38) \ ! 879: { error ("magnitude of constant too large for `float'"); \ ! 880: (d) = -1.7014117331926444e+38; } \ ! 881: else if (((d) > 0) && ((d) < 2.9387358770557188e-39)) \ ! 882: { warning ("`float' constant truncated to zero"); \ ! 883: (d) = 0.0; } \ ! 884: else if (((d) < 0) && ((d) > -2.9387358770557188e-39)) \ ! 885: { warning ("`float' constant truncated to zero"); \ ! 886: (d) = 0.0; } \ ! 887: } ! 888: ! 889: /* For future reference: ! 890: D Float: 9 bit, sign magnitude, excess 128 binary exponent ! 891: normalized 56 bit fraction, redundant bit not represented ! 892: approximately 16 decimal digits of precision ! 893: ! 894: The values to use if we trust decimal to binary conversions: ! 895: #define MAX_D_FLOAT 1.7014118346046923e+38 ! 896: #define MIN_D_FLOAT .29387358770557188e-38 ! 897: ! 898: G float: 12 bit, sign magnitude, excess 1024 binary exponent ! 899: normalized 53 bit fraction, redundant bit not represented ! 900: approximately 15 decimal digits precision ! 901: ! 902: The values to use if we trust decimal to binary conversions: ! 903: #define MAX_G_FLOAT .898846567431157e+308 ! 904: #define MIN_G_FLOAT .556268464626800e-308 ! 905: */ ! 906: ! 907: /* Tell final.c how to eliminate redundant test instructions. */ ! 908: ! 909: /* Here we define machine-dependent flags and fields in cc_status ! 910: (see `conditions.h'). No extra ones are needed for the vax. */ ! 911: ! 912: /* Store in cc_status the expressions ! 913: that the condition codes will describe ! 914: after execution of an instruction whose pattern is EXP. ! 915: Do not alter them if the instruction would not alter the cc's. */ ! 916: ! 917: #define NOTICE_UPDATE_CC(EXP, INSN) \ ! 918: { if (GET_CODE (EXP) == SET) \ ! 919: { if (GET_CODE (SET_SRC (EXP)) == CALL) \ ! 920: CC_STATUS_INIT; \ ! 921: else if (GET_CODE (SET_DEST (EXP)) != PC) \ ! 922: { cc_status.flags = 0; \ ! 923: cc_status.value1 = SET_DEST (EXP); \ ! 924: cc_status.value2 = SET_SRC (EXP); } } \ ! 925: else if (GET_CODE (EXP) == PARALLEL \ ! 926: && GET_CODE (XVECEXP (EXP, 0, 0)) == SET) \ ! 927: { \ ! 928: if (GET_CODE (SET_SRC (XVECEXP (EXP, 0, 0))) == CALL) \ ! 929: CC_STATUS_INIT; \ ! 930: else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) != PC) \ ! 931: { cc_status.flags = 0; \ ! 932: cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0)); \ ! 933: cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0)); } } \ ! 934: /* PARALLELs whose first element sets the PC are aob, sob insns. \ ! 935: They do change the cc's. So drop through and forget the cc's. */ \ ! 936: else CC_STATUS_INIT; \ ! 937: if (cc_status.value1 && GET_CODE (cc_status.value1) == REG \ ! 938: && cc_status.value2 \ ! 939: && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \ ! 940: cc_status.value2 = 0; \ ! 941: if (cc_status.value1 && GET_CODE (cc_status.value1) == MEM \ ! 942: && cc_status.value2 \ ! 943: && GET_CODE (cc_status.value2) == MEM) \ ! 944: cc_status.value2 = 0; } ! 945: /* Actual condition, one line up, should be that value2's address ! 946: depends on value1, but that is too much of a pain. */ ! 947: ! 948: #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \ ! 949: { if (cc_status.flags & CC_NO_OVERFLOW) \ ! 950: return NO_OV; \ ! 951: return NORMAL; } ! 952: ! 953: /* Control the assembler format that we output. */ ! 954: ! 955: /* Output at beginning of assembler file. */ ! 956: ! 957: #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n"); ! 958: ! 959: /* Output to assembler file text saying following lines ! 960: may contain character constants, extra white space, comments, etc. */ ! 961: ! 962: #define ASM_APP_ON "#APP\n" ! 963: ! 964: /* Output to assembler file text saying following lines ! 965: no longer contain unusual constructs. */ ! 966: ! 967: #define ASM_APP_OFF "#NO_APP\n" ! 968: ! 969: /* Output before read-only data. */ ! 970: ! 971: #define TEXT_SECTION_ASM_OP ".text" ! 972: ! 973: /* Output before writable data. */ ! 974: ! 975: #define DATA_SECTION_ASM_OP ".data" ! 976: ! 977: /* How to refer to registers in assembler output. ! 978: This sequence is indexed by compiler's hard-register-number (see above). */ ! 979: ! 980: #define REGISTER_NAMES \ ! 981: {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \ ! 982: "r9", "r10", "r11", "ap", "fp", "sp", "pc"} ! 983: ! 984: /* This is BSD, so it wants DBX format. */ ! 985: ! 986: #define DBX_DEBUGGING_INFO ! 987: ! 988: /* How to renumber registers for dbx and gdb. ! 989: Vax needs no change in the numeration. */ ! 990: ! 991: #define DBX_REGISTER_NUMBER(REGNO) (REGNO) ! 992: ! 993: /* Do not break .stabs pseudos into continuations. */ ! 994: ! 995: #define DBX_CONTIN_LENGTH 0 ! 996: ! 997: /* This is the char to use for continuation (in case we need to turn ! 998: continuation back on). */ ! 999: ! 1000: #define DBX_CONTIN_CHAR '?' ! 1001: ! 1002: /* Don't use the `xsfoo;' construct in DBX output; this system ! 1003: doesn't support it. */ ! 1004: ! 1005: #define DBX_NO_XREFS ! 1006: ! 1007: /* Output the .stabs for a C `static' variable in the data section. */ ! 1008: #define DBX_STATIC_STAB_DATA_SECTION ! 1009: ! 1010: /* Vax specific: which type character is used for type double? */ ! 1011: ! 1012: #define ASM_DOUBLE_CHAR (TARGET_G_FLOAT ? 'g' : 'd') ! 1013: ! 1014: /* This is how to output the definition of a user-level label named NAME, ! 1015: such as the label on a static function or variable NAME. */ ! 1016: ! 1017: #define ASM_OUTPUT_LABEL(FILE,NAME) \ ! 1018: do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) ! 1019: ! 1020: /* This is how to output a command to make the user-level label named NAME ! 1021: defined for reference from other files. */ ! 1022: ! 1023: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \ ! 1024: do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0) ! 1025: ! 1026: /* This is how to output a reference to a user-level label named NAME. */ ! 1027: ! 1028: #define ASM_OUTPUT_LABELREF(FILE,NAME) \ ! 1029: fprintf (FILE, "_%s", NAME) ! 1030: ! 1031: /* This is how to output an internal numbered label where ! 1032: PREFIX is the class of label and NUM is the number within the class. */ ! 1033: ! 1034: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ ! 1035: fprintf (FILE, "%s%d:\n", PREFIX, NUM) ! 1036: ! 1037: /* This is how to store into the string LABEL ! 1038: the symbol_ref name of an internal numbered label where ! 1039: PREFIX is the class of label and NUM is the number within the class. ! 1040: This is suitable for output with `assemble_name'. */ ! 1041: ! 1042: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ ! 1043: sprintf (LABEL, "*%s%d", PREFIX, NUM) ! 1044: ! 1045: /* This is how to output an assembler line defining a `double' constant. ! 1046: It is .dfloat or .gfloat, depending. */ ! 1047: ! 1048: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 1049: fprintf (FILE, "\t.%cfloat 0%c%.20e\n", ASM_DOUBLE_CHAR, \ ! 1050: ASM_DOUBLE_CHAR, (VALUE)) ! 1051: ! 1052: /* This is how to output an assembler line defining a `float' constant. */ ! 1053: ! 1054: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 1055: fprintf (FILE, "\t.float 0f%.20e\n", (VALUE)) ! 1056: ! 1057: /* This is how to output an assembler line defining an `int' constant. */ ! 1058: ! 1059: #define ASM_OUTPUT_INT(FILE,VALUE) \ ! 1060: ( fprintf (FILE, "\t.long "), \ ! 1061: output_addr_const (FILE, (VALUE)), \ ! 1062: fprintf (FILE, "\n")) ! 1063: ! 1064: /* Likewise for `char' and `short' constants. */ ! 1065: ! 1066: #define ASM_OUTPUT_SHORT(FILE,VALUE) \ ! 1067: ( fprintf (FILE, "\t.word "), \ ! 1068: output_addr_const (FILE, (VALUE)), \ ! 1069: fprintf (FILE, "\n")) ! 1070: ! 1071: #define ASM_OUTPUT_CHAR(FILE,VALUE) \ ! 1072: ( fprintf (FILE, "\t.byte "), \ ! 1073: output_addr_const (FILE, (VALUE)), \ ! 1074: fprintf (FILE, "\n")) ! 1075: ! 1076: /* This is how to output an assembler line for a numeric constant byte. */ ! 1077: ! 1078: #define ASM_OUTPUT_BYTE(FILE,VALUE) \ ! 1079: fprintf (FILE, "\t.byte 0x%x\n", (VALUE)) ! 1080: ! 1081: /* This is how to output an insn to push a register on the stack. ! 1082: It need not be very fast code. */ ! 1083: ! 1084: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \ ! 1085: fprintf (FILE, "\tpushl %s\n", reg_names[REGNO]) ! 1086: ! 1087: /* This is how to output an insn to pop a register from the stack. ! 1088: It need not be very fast code. */ ! 1089: ! 1090: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \ ! 1091: fprintf (FILE, "\tmovl (sp)+,%s\n", reg_names[REGNO]) ! 1092: ! 1093: /* This is how to output an element of a case-vector that is absolute. ! 1094: (The Vax does not use such vectors, ! 1095: but we must define this macro anyway.) */ ! 1096: ! 1097: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ ! 1098: fprintf (FILE, "\t.long L%d\n", VALUE) ! 1099: ! 1100: /* This is how to output an element of a case-vector that is relative. */ ! 1101: ! 1102: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ ! 1103: fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL) ! 1104: ! 1105: /* This is how to output an assembler line ! 1106: that says to advance the location counter ! 1107: to a multiple of 2**LOG bytes. */ ! 1108: ! 1109: #define ASM_OUTPUT_ALIGN(FILE,LOG) \ ! 1110: fprintf (FILE, "\t.align %d\n", (LOG)) ! 1111: ! 1112: /* This is how to output an assembler line ! 1113: that says to advance the location counter by SIZE bytes. */ ! 1114: ! 1115: #define ASM_OUTPUT_SKIP(FILE,SIZE) \ ! 1116: fprintf (FILE, "\t.space %u\n", (SIZE)) ! 1117: ! 1118: /* This says how to output an assembler line ! 1119: to define a global common symbol. */ ! 1120: ! 1121: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ ! 1122: ( fputs (".comm ", (FILE)), \ ! 1123: assemble_name ((FILE), (NAME)), \ ! 1124: fprintf ((FILE), ",%u\n", (ROUNDED))) ! 1125: ! 1126: /* This says how to output an assembler line ! 1127: to define a local common symbol. */ ! 1128: ! 1129: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ ! 1130: ( fputs (".lcomm ", (FILE)), \ ! 1131: assemble_name ((FILE), (NAME)), \ ! 1132: fprintf ((FILE), ",%u\n", (ROUNDED))) ! 1133: ! 1134: /* Store in OUTPUT a string (made with alloca) containing ! 1135: an assembler-name for a local static variable named NAME. ! 1136: LABELNO is an integer which is different for each call. */ ! 1137: ! 1138: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ ! 1139: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ ! 1140: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) ! 1141: ! 1142: /* Define the parentheses used to group arithmetic operations ! 1143: in assembler code. */ ! 1144: ! 1145: #define ASM_OPEN_PAREN "(" ! 1146: #define ASM_CLOSE_PAREN ")" ! 1147: ! 1148: /* Define results of standard character escape sequences. */ ! 1149: #define TARGET_BELL 007 ! 1150: #define TARGET_BS 010 ! 1151: #define TARGET_TAB 011 ! 1152: #define TARGET_NEWLINE 012 ! 1153: #define TARGET_VT 013 ! 1154: #define TARGET_FF 014 ! 1155: #define TARGET_CR 015 ! 1156: ! 1157: /* Print an instruction operand X on file FILE. ! 1158: CODE is the code from the %-spec that requested printing this operand; ! 1159: if `%z3' was used to print operand 3, then CODE is 'z'. ! 1160: On the Vax, the codes used are: ! 1161: `#', indicating that either `d' or `g' should be printed, ! 1162: depending on whether we're using dfloat or gfloat. ! 1163: `C', indicating the reverse of the condition name specified by the ! 1164: operand. ! 1165: `P', indicating one plus a constant operand ! 1166: `N', indicating the one's complement of a constant operand ! 1167: `H', indicating the low-order 16 bits of the one's complement of a constant ! 1168: `B', similarly for the low-order 8 bits. */ ! 1169: ! 1170: #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ ! 1171: ((CODE) == '#') ! 1172: ! 1173: #define PRINT_OPERAND(FILE, X, CODE) \ ! 1174: { extern char *rev_cond_name (); \ ! 1175: if (CODE == '#') fputc (ASM_DOUBLE_CHAR, FILE); \ ! 1176: else if (CODE == 'C') \ ! 1177: fputs (rev_cond_name (X), FILE); \ ! 1178: else if (CODE == 'P' && GET_CODE (X) == CONST_INT) \ ! 1179: fprintf (FILE, "$%d", INTVAL (X) + 1); \ ! 1180: else if (CODE == 'N' && GET_CODE (X) == CONST_INT) \ ! 1181: fprintf (FILE, "$%d", ~ INTVAL (X)); \ ! 1182: /* rotl instruction cannot deal with negative arguments. */ \ ! 1183: else if (CODE == 'R' && GET_CODE (X) == CONST_INT) \ ! 1184: fprintf (FILE, "$%d", 32 - INTVAL (X)); \ ! 1185: else if (CODE == 'H' && GET_CODE (X) == CONST_INT) \ ! 1186: fprintf (FILE, "$%d", 0xffff & ~ INTVAL (X)); \ ! 1187: else if (CODE == 'B' && GET_CODE (X) == CONST_INT) \ ! 1188: fprintf (FILE, "$%d", 0xff & ~ INTVAL (X)); \ ! 1189: else if (GET_CODE (X) == REG) \ ! 1190: fprintf (FILE, "%s", reg_names[REGNO (X)]); \ ! 1191: else if (GET_CODE (X) == MEM) \ ! 1192: output_address (XEXP (X, 0)); \ ! 1193: else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode) \ ! 1194: { union { double d; int i[2]; } u; \ ! 1195: u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X); \ ! 1196: fprintf (FILE, "$0%c%.20e", ASM_DOUBLE_CHAR, u.d); } \ ! 1197: else { putc ('$', FILE); output_addr_const (FILE, X); }} ! 1198: ! 1199: /* Print a memory operand whose address is X, on file FILE. ! 1200: This uses a function in output-vax.c. */ ! 1201: ! 1202: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ ! 1203: print_operand_address (FILE, ADDR)
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.