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1.1 ! root 1: /* Definitions of target machine for GNU compiler. MIPS version. ! 2: Contributed by A. Lichnewsky, [email protected] ! 3: Changed by Michael Meissner, [email protected] ! 4: Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. ! 5: ! 6: This file is part of GNU CC. ! 7: ! 8: GNU CC is free software; you can redistribute it and/or modify ! 9: it under the terms of the GNU General Public License as published by ! 10: the Free Software Foundation; either version 2, or (at your option) ! 11: any later version. ! 12: ! 13: GNU CC is distributed in the hope that it will be useful, ! 14: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 16: GNU General Public License for more details. ! 17: ! 18: You should have received a copy of the GNU General Public License ! 19: along with GNU CC; see the file COPYING. If not, write to ! 20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 21: ! 22: ! 23: /* Make Saber happier on obstack.[ch]. */ ! 24: #if defined(__mips__) || defined(mips) ! 25: #define __PTR_TO_INT(P) ((int)(P)) ! 26: #define __INT_TO_PTR(P) ((char *)(P)) ! 27: #endif ! 28: ! 29: /* Standard GCC variables that we reference. */ ! 30: ! 31: extern char *asm_file_name; ! 32: extern char call_used_regs[]; ! 33: extern int current_function_calls_alloca; ! 34: extern int flag_omit_frame_pointer; ! 35: extern int frame_pointer_needed; ! 36: extern char *language_string; ! 37: extern int may_call_alloca; ! 38: extern int optimize; ! 39: extern char **save_argv; ! 40: extern int target_flags; ! 41: extern char *version_string; ! 42: ! 43: /* MIPS external variables defined in mips.c. */ ! 44: ! 45: /* comparison type */ ! 46: enum cmp_type { ! 47: CMP_SI, /* compare integers */ ! 48: CMP_SF, /* compare single precision floats */ ! 49: CMP_DF, /* compare double precision floats */ ! 50: CMP_MAX /* max comparison type */ ! 51: }; ! 52: ! 53: /* types of delay slot */ ! 54: enum delay_type { ! 55: DELAY_NONE, /* no delay slot */ ! 56: DELAY_LOAD, /* load from memory delay */ ! 57: DELAY_HILO, /* move from/to hi/lo registers */ ! 58: DELAY_FCMP /* delay after doing c.<xx>.{d,s} */ ! 59: }; ! 60: ! 61: /* Which processor to schedule for. Since there is no difference between ! 62: a R2000 and R3000 in terms of the scheduler, we collapse them into ! 63: just an R3000. The elements of the enumeration must match exactly ! 64: the cpu attribute in the mips.md machine description. */ ! 65: ! 66: enum processor_type { ! 67: PROCESSOR_DEFAULT, ! 68: PROCESSOR_R3000, ! 69: PROCESSOR_R6000, ! 70: PROCESSOR_R4000 ! 71: }; ! 72: ! 73: /* Recast the cpu class to be the cpu attribute. */ ! 74: #define mips_cpu_attr ((enum attr_cpu)mips_cpu) ! 75: ! 76: /* Which type of block move to do (whether or not the last store is ! 77: split out so it can fill a branch delay slot). */ ! 78: ! 79: enum block_move_type { ! 80: BLOCK_MOVE_NORMAL, /* generate complete block move */ ! 81: BLOCK_MOVE_NOT_LAST, /* generate all but last store */ ! 82: BLOCK_MOVE_LAST /* generate just the last store */ ! 83: }; ! 84: ! 85: extern char mips_reg_names[][8]; /* register names (a0 vs. $4). */ ! 86: extern char mips_print_operand_punct[]; /* print_operand punctuation chars */ ! 87: extern char *current_function_name; /* current function being compiled */ ! 88: extern char *current_function_file; /* filename current function is in */ ! 89: extern int num_source_filenames; /* current .file # */ ! 90: extern int inside_function; /* != 0 if inside of a function */ ! 91: extern int ignore_line_number; /* != 0 if we are to ignore next .loc */ ! 92: extern int file_in_function_warning; /* warning given about .file in func */ ! 93: extern int sdb_label_count; /* block start/end next label # */ ! 94: extern int mips_section_threshold; /* # bytes of data/sdata cutoff */ ! 95: extern int g_switch_value; /* value of the -G xx switch */ ! 96: extern int g_switch_set; /* whether -G xx was passed. */ ! 97: extern int sym_lineno; /* sgi next label # for each stmt */ ! 98: extern int set_noreorder; /* # of nested .set noreorder's */ ! 99: extern int set_nomacro; /* # of nested .set nomacro's */ ! 100: extern int set_noat; /* # of nested .set noat's */ ! 101: extern int set_volatile; /* # of nested .set volatile's */ ! 102: extern int mips_branch_likely; /* emit 'l' after br (branch likely) */ ! 103: extern int mips_dbx_regno[]; /* Map register # to debug register # */ ! 104: extern char mips_rtx_classify[]; /* classify an RTX code */ ! 105: extern struct rtx_def *branch_cmp[2]; /* operands for compare */ ! 106: extern enum cmp_type branch_type; /* what type of branch to use */ ! 107: extern enum processor_type mips_cpu; /* which cpu are we scheduling for */ ! 108: extern int mips_isa; /* architectural level */ ! 109: extern char *mips_cpu_string; /* for -mcpu=<xxx> */ ! 110: extern char *mips_isa_string; /* for -mips{1,2,3} */ ! 111: extern int dslots_load_total; /* total # load related delay slots */ ! 112: extern int dslots_load_filled; /* # filled load delay slots */ ! 113: extern int dslots_jump_total; /* total # jump related delay slots */ ! 114: extern int dslots_jump_filled; /* # filled jump delay slots */ ! 115: extern int dslots_number_nops; /* # of nops needed by previous insn */ ! 116: extern int num_refs[3]; /* # 1/2/3 word references */ ! 117: extern struct rtx_def *mips_load_reg; /* register to check for load delay */ ! 118: extern struct rtx_def *mips_load_reg2; /* 2nd reg to check for load delay */ ! 119: extern struct rtx_def *mips_load_reg3; /* 3rd reg to check for load delay */ ! 120: extern struct rtx_def *mips_load_reg4; /* 4th reg to check for load delay */ ! 121: ! 122: /* Functions within mips.c that we reference. */ ! 123: ! 124: extern void abort_with_insn (); ! 125: extern int arith32_operand (); ! 126: extern int arith_operand (); ! 127: extern int cmp_op (); ! 128: extern int cmp2_op (); ! 129: extern long compute_frame_size (); ! 130: extern int epilogue_reg_mentioned_p (); ! 131: extern void expand_block_move (); ! 132: extern int equality_op (); ! 133: extern int fcmp_op (); ! 134: extern void final_prescan_insn (); ! 135: extern int fpsw_register_operand (); ! 136: extern struct rtx_def * function_arg (); ! 137: extern void function_arg_advance (); ! 138: extern int function_arg_partial_nregs (); ! 139: extern void function_epilogue (); ! 140: extern void function_prologue (); ! 141: extern void gen_conditional_branch (); ! 142: extern struct rtx_def * gen_int_relational (); ! 143: extern void init_cumulative_args (); ! 144: extern int large_int (); ! 145: extern int md_register_operand (); ! 146: extern int mips_address_cost (); ! 147: extern void mips_asm_file_end (); ! 148: extern void mips_asm_file_start (); ! 149: extern int mips_const_double_ok (); ! 150: extern void mips_count_memory_refs (); ! 151: extern int mips_debugger_offset (); ! 152: extern void mips_declare_object (); ! 153: extern int mips_epilogue_delay_slots (); ! 154: extern void mips_expand_epilogue (); ! 155: extern void mips_expand_prologue (); ! 156: extern char *mips_fill_delay_slot (); ! 157: extern char *mips_move_1word (); ! 158: extern char *mips_move_2words (); ! 159: extern void mips_output_double (); ! 160: extern int mips_output_external (); ! 161: extern void mips_output_float (); ! 162: extern void mips_output_filename (); ! 163: extern void mips_output_lineno (); ! 164: extern char *output_block_move (); ! 165: extern void override_options (); ! 166: extern int pc_or_label_operand (); ! 167: extern void print_operand_address (); ! 168: extern void print_operand (); ! 169: extern void print_options (); ! 170: extern int reg_or_0_operand (); ! 171: extern int simple_epilogue_p (); ! 172: extern int simple_memory_operand (); ! 173: extern int small_int (); ! 174: extern void trace(); ! 175: extern int uns_arith_operand (); ! 176: extern int uns_cmp_op (); ! 177: ! 178: /* Recognition functions that return if a condition is true. */ ! 179: extern int address_operand (); ! 180: extern int const_double_operand (); ! 181: extern int const_int_operand (); ! 182: extern int general_operand (); ! 183: extern int immediate_operand (); ! 184: extern int memory_address_p (); ! 185: extern int memory_operand (); ! 186: extern int nonimmediate_operand (); ! 187: extern int nonmemory_operand (); ! 188: extern int register_operand (); ! 189: extern int scratch_operand (); ! 190: ! 191: /* Functions to change what output section we are using. */ ! 192: extern void data_section (); ! 193: extern void rdata_section (); ! 194: extern void readonly_data_section (); ! 195: extern void sdata_section (); ! 196: extern void text_section (); ! 197: ! 198: /* Functions in the rest of the compiler that we reference. */ ! 199: extern void abort_with_insn (); ! 200: extern void debug_rtx (); ! 201: extern void fatal_io_error (); ! 202: extern int get_frame_size (); ! 203: extern int offsettable_address_p (); ! 204: extern void output_address (); ! 205: extern char *permalloc (); ! 206: extern int reg_mentioned_p (); ! 207: ! 208: /* Functions in the standard library that we reference. */ ! 209: extern void abort (); ! 210: extern int atoi (); ! 211: extern char *getenv (); ! 212: extern char *mktemp (); ! 213: ! 214: ! 215: /* Stubs for half-pic support if not OSF/1 reference platform. */ ! 216: ! 217: #ifndef HALF_PIC_P ! 218: #define HALF_PIC_P() 0 ! 219: #define HALF_PIC_NUMBER_PTRS 0 ! 220: #define HALF_PIC_NUMBER_REFS 0 ! 221: #define HALF_PIC_ENCODE(DECL) ! 222: #define HALF_PIC_DECLARE(NAME) ! 223: #define HALF_PIC_INIT() error ("half-pic init called on systems that don't support it.") ! 224: #define HALF_PIC_ADDRESS_P(X) 0 ! 225: #define HALF_PIC_PTR(X) X ! 226: #define HALF_PIC_FINISH(STREAM) ! 227: #endif ! 228: ! 229: ! 230: /* Run-time compilation parameters selecting different hardware subsets. */ ! 231: ! 232: /* Macros used in the machine description to test the flags. */ ! 233: ! 234: /* Bits for real switches */ ! 235: #define MASK_INT64 0x00000001 /* ints are 64 bits */ ! 236: #define MASK_LONG64 0x00000002 /* longs are 64 bits */ ! 237: #define MASK_LLONG128 0x00000004 /* long longs are 128 bits */ ! 238: #define MASK_GPOPT 0x00000008 /* Optimize for global pointer */ ! 239: #define MASK_GAS 0x00000010 /* Gas used instead of MIPS as */ ! 240: #define MASK_NAME_REGS 0x00000020 /* Use MIPS s/w reg name convention */ ! 241: #define MASK_STATS 0x00000040 /* print statistics to stderr */ ! 242: #define MASK_MEMCPY 0x00000080 /* call memcpy instead of inline code*/ ! 243: #define MASK_SOFT_FLOAT 0x00000100 /* software floating point */ ! 244: #define MASK_FLOAT64 0x00000200 /* fp registers are 64 bits */ ! 245: #define MASK_ABICALLS 0x00000400 /* emit .abicalls/.cprestore/.cpload */ ! 246: #define MASK_HALF_PIC 0x00000800 /* Emit OSF-style pic refs to externs*/ ! 247: #define MASK_LONG_CALLS 0x00001000 /* Always call through a register */ ! 248: #define MASK_UNUSED1 0x00002000 ! 249: #define MASK_UNUSED2 0x00004000 ! 250: #define MASK_UNUSED3 0x00008000 ! 251: #define MASK_UNUSED4 0x00010000 ! 252: #define MASK_UNUSED5 0x00020000 ! 253: #define MASK_UNUSED6 0x00040000 ! 254: #define MASK_UNUSED7 0x00080000 ! 255: ! 256: /* Dummy switches used only in spec's*/ ! 257: #define MASK_MIPS_TFILE 0x00000000 /* flag for mips-tfile usage */ ! 258: ! 259: /* Debug switches, not documented */ ! 260: #define MASK_DEBUG 0x40000000 /* Eliminate version # in .s file */ ! 261: #define MASK_DEBUG_A 0x20000000 /* don't allow <label>($reg) addrs */ ! 262: #define MASK_DEBUG_B 0x10000000 /* GO_IF_LEGITIMATE_ADDRESS debug */ ! 263: #define MASK_DEBUG_C 0x08000000 /* don't expand seq, etc. */ ! 264: #define MASK_DEBUG_D 0x04000000 /* don't do define_split's */ ! 265: #define MASK_DEBUG_E 0x02000000 /* function_arg debug */ ! 266: #define MASK_DEBUG_F 0x01000000 /* don't try to suppress load nop's */ ! 267: #define MASK_DEBUG_G 0x00800000 /* don't support 64 bit arithmetic */ ! 268: #define MASK_DEBUG_H 0x00400000 /* allow ints in FP registers */ ! 269: #define MASK_DEBUG_I 0x00200000 /* unused */ ! 270: #define MASK_DEBUG_J 0x00100000 /* unused */ ! 271: ! 272: /* r4000 64 bit sizes */ ! 273: #define TARGET_INT64 (target_flags & MASK_INT64) ! 274: #define TARGET_LONG64 (target_flags & MASK_LONG64) ! 275: #define TARGET_LLONG128 (target_flags & MASK_LLONG128) ! 276: #define TARGET_FLOAT64 (target_flags & MASK_FLOAT64) ! 277: ! 278: /* Mips vs. GNU assembler */ ! 279: #define TARGET_GAS (target_flags & MASK_GAS) ! 280: #define TARGET_UNIX_ASM (!TARGET_GAS) ! 281: #define TARGET_MIPS_AS TARGET_UNIX_ASM ! 282: ! 283: /* Debug Mode */ ! 284: #define TARGET_DEBUG_MODE (target_flags & MASK_DEBUG) ! 285: #define TARGET_DEBUG_A_MODE (target_flags & MASK_DEBUG_A) ! 286: #define TARGET_DEBUG_B_MODE (target_flags & MASK_DEBUG_B) ! 287: #define TARGET_DEBUG_C_MODE (target_flags & MASK_DEBUG_C) ! 288: #define TARGET_DEBUG_D_MODE (target_flags & MASK_DEBUG_D) ! 289: #define TARGET_DEBUG_E_MODE (target_flags & MASK_DEBUG_E) ! 290: #define TARGET_DEBUG_F_MODE (target_flags & MASK_DEBUG_F) ! 291: #define TARGET_DEBUG_G_MODE (target_flags & MASK_DEBUG_G) ! 292: #define TARGET_DEBUG_H_MODE (target_flags & MASK_DEBUG_H) ! 293: #define TARGET_DEBUG_I_MODE (target_flags & MASK_DEBUG_I) ! 294: #define TARGET_DEBUG_J_MODE (target_flags & MASK_DEBUG_J) ! 295: ! 296: /* Reg. Naming in .s ($21 vs. $a0) */ ! 297: #define TARGET_NAME_REGS (target_flags & MASK_NAME_REGS) ! 298: ! 299: /* Optimize for Sdata/Sbss */ ! 300: #define TARGET_GP_OPT (target_flags & MASK_GPOPT) ! 301: ! 302: /* print program statistics */ ! 303: #define TARGET_STATS (target_flags & MASK_STATS) ! 304: ! 305: /* call memcpy instead of inline code */ ! 306: #define TARGET_MEMCPY (target_flags & MASK_MEMCPY) ! 307: ! 308: /* .abicalls, etc from Pyramid V.4 */ ! 309: #define TARGET_ABICALLS (target_flags & MASK_ABICALLS) ! 310: ! 311: /* OSF pic references to externs */ ! 312: #define TARGET_HALF_PIC (target_flags & MASK_HALF_PIC) ! 313: ! 314: /* software floating point */ ! 315: #define TARGET_SOFT_FLOAT (target_flags & MASK_SOFT_FLOAT) ! 316: #define TARGET_HARD_FLOAT (! TARGET_SOFT_FLOAT) ! 317: ! 318: /* always call through a register */ ! 319: #define TARGET_LONG_CALLS (target_flags & MASK_LONG_CALLS) ! 320: ! 321: /* Macro to define tables used to set the flags. ! 322: This is a list in braces of pairs in braces, ! 323: each pair being { "NAME", VALUE } ! 324: where VALUE is the bits to set or minus the bits to clear. ! 325: An empty string NAME is used to identify the default VALUE. */ ! 326: ! 327: #define TARGET_SWITCHES \ ! 328: { \ ! 329: {"int64", MASK_INT64 | MASK_LONG64}, \ ! 330: {"long64", MASK_LONG64}, \ ! 331: {"longlong128", MASK_INT64 | MASK_LONG64 | MASK_LLONG128}, \ ! 332: {"mips-as", -MASK_GAS}, \ ! 333: {"gas", MASK_GAS}, \ ! 334: {"rnames", MASK_NAME_REGS}, \ ! 335: {"no-rnames", -MASK_NAME_REGS}, \ ! 336: {"gpOPT", MASK_GPOPT}, \ ! 337: {"gpopt", MASK_GPOPT}, \ ! 338: {"no-gpOPT", -MASK_GPOPT}, \ ! 339: {"no-gpopt", -MASK_GPOPT}, \ ! 340: {"stats", MASK_STATS}, \ ! 341: {"no-stats", -MASK_STATS}, \ ! 342: {"memcpy", MASK_MEMCPY}, \ ! 343: {"no-memcpy", -MASK_MEMCPY}, \ ! 344: {"mips-tfile", MASK_MIPS_TFILE}, \ ! 345: {"no-mips-tfile", -MASK_MIPS_TFILE}, \ ! 346: {"soft-float", MASK_SOFT_FLOAT}, \ ! 347: {"hard-float", -MASK_SOFT_FLOAT}, \ ! 348: {"fp64", MASK_FLOAT64}, \ ! 349: {"fp32", -MASK_FLOAT64}, \ ! 350: {"abicalls", MASK_ABICALLS}, \ ! 351: {"no-abicalls", -MASK_ABICALLS}, \ ! 352: {"half-pic", MASK_HALF_PIC}, \ ! 353: {"no-half-pic", -MASK_HALF_PIC}, \ ! 354: {"long-calls", MASK_LONG_CALLS}, \ ! 355: {"no-long-calls", -MASK_LONG_CALLS}, \ ! 356: {"debug", MASK_DEBUG}, \ ! 357: {"debuga", MASK_DEBUG_A}, \ ! 358: {"debugb", MASK_DEBUG_B}, \ ! 359: {"debugc", MASK_DEBUG_C}, \ ! 360: {"debugd", MASK_DEBUG_D}, \ ! 361: {"debuge", MASK_DEBUG_E}, \ ! 362: {"debugf", MASK_DEBUG_F}, \ ! 363: {"debugg", MASK_DEBUG_G}, \ ! 364: {"debugh", MASK_DEBUG_H}, \ ! 365: {"debugi", MASK_DEBUG_I}, \ ! 366: {"debugj", MASK_DEBUG_J}, \ ! 367: {"", TARGET_DEFAULT | TARGET_CPU_DEFAULT} \ ! 368: } ! 369: ! 370: /* Default target_flags if no switches are specified */ ! 371: ! 372: #ifndef TARGET_DEFAULT ! 373: #define TARGET_DEFAULT 0 ! 374: #endif ! 375: ! 376: #ifndef TARGET_CPU_DEFAULT ! 377: #define TARGET_CPU_DEFAULT 0 ! 378: #endif ! 379: ! 380: /* This macro is similar to `TARGET_SWITCHES' but defines names of ! 381: command options that have values. Its definition is an ! 382: initializer with a subgrouping for each command option. ! 383: ! 384: Each subgrouping contains a string constant, that defines the ! 385: fixed part of the option name, and the address of a variable. ! 386: The variable, type `char *', is set to the variable part of the ! 387: given option if the fixed part matches. The actual option name ! 388: is made by appending `-m' to the specified name. ! 389: ! 390: Here is an example which defines `-mshort-data-NUMBER'. If the ! 391: given option is `-mshort-data-512', the variable `m88k_short_data' ! 392: will be set to the string `"512"'. ! 393: ! 394: extern char *m88k_short_data; ! 395: #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } } */ ! 396: ! 397: #define TARGET_OPTIONS \ ! 398: { \ ! 399: { "cpu=", &mips_cpu_string }, \ ! 400: { "ips", &mips_isa_string } \ ! 401: } ! 402: ! 403: /* Macros to decide whether certain features are available or not, ! 404: depending on the instruction set architecture level. */ ! 405: ! 406: #define BRANCH_LIKELY_P() (mips_isa >= 2) ! 407: #define HAVE_64BIT_P() (mips_isa >= 3) ! 408: #define HAVE_SQRT_P() (mips_isa >= 2) ! 409: ! 410: ! 411: /* Switch Recognition by gcc.c. Add -G xx support */ ! 412: ! 413: #ifdef SWITCH_TAKES_ARG ! 414: #undef SWITCH_TAKES_ARG ! 415: #endif ! 416: ! 417: #define SWITCH_TAKES_ARG(CHAR) \ ! 418: ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \ ! 419: || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \ ! 420: || (CHAR) == 'I' || (CHAR) == 'm' \ ! 421: || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'G') ! 422: ! 423: /* Sometimes certain combinations of command options do not make sense ! 424: on a particular target machine. You can define a macro ! 425: `OVERRIDE_OPTIONS' to take account of this. This macro, if ! 426: defined, is executed once just after all the command options have ! 427: been parsed. ! 428: ! 429: On the MIPS, it is used to handle -G. We also use it to set up all ! 430: of the tables referenced in the other macros. */ ! 431: ! 432: #define OVERRIDE_OPTIONS override_options () ! 433: ! 434: /* Zero or more C statements that may conditionally modify two ! 435: variables `fixed_regs' and `call_used_regs' (both of type `char ! 436: []') after they have been initialized from the two preceding ! 437: macros. ! 438: ! 439: This is necessary in case the fixed or call-clobbered registers ! 440: depend on target flags. ! 441: ! 442: You need not define this macro if it has no work to do. ! 443: ! 444: If the usage of an entire class of registers depends on the target ! 445: flags, you may indicate this to GCC by using this macro to modify ! 446: `fixed_regs' and `call_used_regs' to 1 for each of the registers in ! 447: the classes which should not be used by GCC. Also define the macro ! 448: `REG_CLASS_FROM_LETTER' to return `NO_REGS' if it is called with a ! 449: letter for a class that shouldn't be used. ! 450: ! 451: (However, if this class is not included in `GENERAL_REGS' and all ! 452: of the insn patterns whose constraints permit this class are ! 453: controlled by target switches, then GCC will automatically avoid ! 454: using these registers when the target switches are opposed to ! 455: them.) */ ! 456: ! 457: #define CONDITIONAL_REGISTER_USAGE \ ! 458: do \ ! 459: { \ ! 460: if (!TARGET_HARD_FLOAT) \ ! 461: { \ ! 462: int regno; \ ! 463: \ ! 464: for (regno = FP_REG_FIRST; regno <= FP_REG_LAST; regno++) \ ! 465: fixed_regs[regno] = call_used_regs[regno] = 1; \ ! 466: } \ ! 467: } \ ! 468: while (0) ! 469: ! 470: ! 471: /* Some machines may desire to change what optimizations are ! 472: performed for various optimization levels. This macro, if ! 473: defined, is executed once just after the optimization level is ! 474: determined and before the remainder of the command options have ! 475: been parsed. Values set in this macro are used as the default ! 476: values for the other command line options. ! 477: ! 478: LEVEL is the optimization level specified; 2 if -O2 is ! 479: specified, 1 if -O is specified, and 0 if neither is specified. */ ! 480: ! 481: #define OPTIMIZATION_OPTIONS(LEVEL) \ ! 482: { \ ! 483: if (LEVEL) \ ! 484: { \ ! 485: flag_omit_frame_pointer = TRUE; \ ! 486: flag_schedule_insns_after_reload = TRUE; \ ! 487: target_flags &= MASK_GPOPT; \ ! 488: } \ ! 489: } ! 490: ! 491: ! 492: /* Complain about missing specs and predefines that should be defined in each ! 493: of the target tm files to override the defaults. This is mostly a place- ! 494: holder until I can get each of the files updated [mm]. */ ! 495: ! 496: #if defined(OSF_OS) \ ! 497: || defined(DECSTATION) \ ! 498: || defined(SGI_TARGET) \ ! 499: || defined(MIPS_NEWS) \ ! 500: || defined(MIPS_SYSV) \ ! 501: || defined(MIPS_SVR4) \ ! 502: || defined(MIPS_BSD43) ! 503: ! 504: #ifndef CPP_PREDEFINES ! 505: #error "Define CPP_PREDEFINES in the appropriate tm.h file" ! 506: #endif ! 507: ! 508: #ifndef CPP_SPEC ! 509: #error "Define CPP_SPEC in the appropriate tm.h file" ! 510: #endif ! 511: ! 512: #ifndef LINK_SPEC ! 513: #error "Define LINK_SPEC in the appropriate tm.h file" ! 514: #endif ! 515: ! 516: #ifndef LIB_SPEC ! 517: #error "Define LIB_SPEC in the appropriate tm.h file" ! 518: #endif ! 519: ! 520: #ifndef STARTFILE_SPEC ! 521: #error "Define STARTFILE_SPEC in the appropriate tm.h file" ! 522: #endif ! 523: ! 524: #ifndef MACHINE_TYPE ! 525: #error "Define MACHINE_TYPE in the appropriate tm.h file" ! 526: #endif ! 527: #endif ! 528: ! 529: /* Tell collect what flags to pass to nm. */ ! 530: #ifndef NM_FLAGS ! 531: #define NM_FLAGS "-Bp" ! 532: #endif ! 533: ! 534: ! 535: /* Names to predefine in the preprocessor for this target machine. */ ! 536: ! 537: #ifndef CPP_PREDEFINES ! 538: #define CPP_PREDEFINES "-Dmips -Dunix -Dhost_mips -DMIPSEB -DR3000 -DSYSTYPE_BSD43 \ ! 539: -D_mips -D_unix -D_host_mips -D_MIPSEB -D_R3000 -D_SYSTYPE_BSD43" ! 540: #endif ! 541: ! 542: /* Extra switches sometimes passed to the assembler. */ ! 543: ! 544: #ifndef ASM_SPEC ! 545: #define ASM_SPEC "\ ! 546: %{!mgas: \ ! 547: %{!mrnames: %{!.s:-nocpp} %{.s: %{cpp} %{nocpp}}} \ ! 548: %{pipe: %e-pipe is not supported.} \ ! 549: %{EB} %{!EB:-EB} \ ! 550: %{EL: %e-EL not supported} \ ! 551: %{mips1} %{mips2} %{mips3} \ ! 552: %{noasmopt:-O0} \ ! 553: %{!noasmopt:%{O:-O2} %{O1:-O2} %{O2:-O2} %{O3:-O3}} \ ! 554: %{g} %{g0} %{g1} %{g2} %{g3} %{v} %{K} \ ! 555: %{ggdb:-g} %{ggdb0:-g0} %{ggdb1:-g1} %{ggdb2:-g2} %{ggdb3:-g3} \ ! 556: %{gstabs:-g} %{gstabs0:-g0} %{gstabs1:-g1} %{gstabs2:-g2} %{gstabs3:-g3} \ ! 557: %{gstabs+:-g} %{gstabs+0:-g0} %{gstabs+1:-g1} %{gstabs+2:-g2} %{gstabs+3:-g3} \ ! 558: %{gcoff:-g} %{gstabs0:-g0} %{gcoff1:-g1} %{gcoff2:-g2} %{gcoff3:-g3}} \ ! 559: %{G*}" ! 560: ! 561: #endif /* ASM_SPEC */ ! 562: ! 563: /* Specify to run a post-processor, mips-tfile after the assembler ! 564: has run to stuff the mips debug information into the object file. ! 565: This is needed because the $#!%^ MIPS assembler provides no way ! 566: of specifying such information in the assembly file. If we are ! 567: cross compiling, disable mips-tfile unless the user specifies ! 568: -mmips-tfile. */ ! 569: ! 570: #ifndef ASM_FINAL_SPEC ! 571: #if ((TARGET_CPU_DEFAULT | TARGET_DEFAULT) & MASK_GAS) != 0 || defined (CROSS_COMPILE) ! 572: /* GAS */ ! 573: #define ASM_FINAL_SPEC "\ ! 574: %{mmips-as: %{!mno-mips-tfile: \ ! 575: \n mips-tfile %{v*: -v} \ ! 576: %{K: -I %b.o~} \ ! 577: %{!K: %{save-temps: -I %b.o~}} \ ! 578: %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ ! 579: %{.s:%i} %{!.s:%g.s}}}" ! 580: ! 581: #else /* not GAS, clean up after MIPS assembler */ ! 582: #define ASM_FINAL_SPEC "\ ! 583: %{!mgas: %{!mno-mips-tfile: \ ! 584: \n mips-tfile %{v*: -v} \ ! 585: %{K: -I %b.o~} \ ! 586: %{!K: %{save-temps: -I %b.o~}} \ ! 587: %{c:%W{o*}%{!o*:-o %b.o}}%{!c:-o %U.o} \ ! 588: %{.s:%i} %{!.s:%g.s}}}" ! 589: ! 590: #endif /* GAS */ ! 591: #endif /* ASM_FINAL_SPEC */ ! 592: ! 593: /* Redefinition of libraries used. Mips doesn't support normal ! 594: UNIX style profiling via calling _mcount. It does offer ! 595: profiling that samples the PC, so do what we can... */ ! 596: ! 597: #ifndef LIB_SPEC ! 598: #define LIB_SPEC "%{pg:-lprof1} %{p:-lprof1} -lc" ! 599: #endif ! 600: ! 601: /* Extra switches sometimes passed to the linker. */ ! 602: ! 603: #ifndef LINK_SPEC ! 604: #define LINK_SPEC "\ ! 605: %{G*} \ ! 606: %{!mgas: \ ! 607: %{pipe: %e-pipe is not supported.} \ ! 608: %{EB} %{!EB:-EB} \ ! 609: %{EL: %e-EL not supported} \ ! 610: %{mips1} %{mips2} %{mips3} \ ! 611: %{bestGnum} %{shared} %{non_shared}}" ! 612: #endif /* LINK_SPEC defined */ ! 613: ! 614: /* Specs for the compiler proper */ ! 615: ! 616: #ifndef CC1_SPEC ! 617: #define CC1_SPEC "\ ! 618: %{gline:%{!g:%{!g0:%{!g1:%{!g2: -g1}}}}} \ ! 619: %{G*} \ ! 620: %{pic-none: -mno-half-pic} \ ! 621: %{pic-lib: -mhalf-pic} \ ! 622: %{pic-extern: -mhalf-pic} \ ! 623: %{pic-calls: -mhalf-pic} \ ! 624: %{save-temps: }" ! 625: #endif ! 626: ! 627: /* Preprocessor specs */ ! 628: ! 629: #ifndef CPP_SPEC ! 630: #define CPP_SPEC "\ ! 631: %{.cc: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \ ! 632: %{.cxx: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \ ! 633: %{.C: -D__LANGUAGE_C_PLUS_PLUS -D_LANGUAGE_C_PLUS_PLUS} \ ! 634: %{.m: -D__LANGUAGE_OBJECTIVE_C -D_LANGUAGE_OBJECTIVE_C} \ ! 635: %{.S: -D__LANGUAGE_ASSEMBLY -D_LANGUAGE_ASSEMBLY %{!ansi:-DLANGUAGE_ASSEMBLY}} \ ! 636: %{!.S: -D__LANGUAGE_C -D_LANGUAGE_C %{!ansi:-DLANGUAGE_C}}" ! 637: #endif ! 638: ! 639: /* If defined, this macro is an additional prefix to try after ! 640: `STANDARD_EXEC_PREFIX'. */ ! 641: ! 642: #ifndef MD_EXEC_PREFIX ! 643: #define MD_EXEC_PREFIX "/usr/lib/cmplrs/cc/" ! 644: #endif ! 645: ! 646: #ifndef MD_STARTFILE_PREFIX ! 647: #define MD_STARTFILE_PREFIX "/usr/lib/cmplrs/cc/" ! 648: #endif ! 649: ! 650: ! 651: /* Print subsidiary information on the compiler version in use. */ ! 652: ! 653: #define MIPS_VERSION "[AL 1.1, MM 40]" ! 654: ! 655: #ifndef MACHINE_TYPE ! 656: #define MACHINE_TYPE "BSD Mips" ! 657: #endif ! 658: ! 659: #ifndef TARGET_VERSION_INTERNAL ! 660: #define TARGET_VERSION_INTERNAL(STREAM) \ ! 661: fprintf (STREAM, " %s %s", MIPS_VERSION, MACHINE_TYPE) ! 662: #endif ! 663: ! 664: #ifndef TARGET_VERSION ! 665: #define TARGET_VERSION TARGET_VERSION_INTERNAL (stderr) ! 666: #endif ! 667: ! 668: ! 669: #define SDB_DEBUGGING_INFO /* generate info for mips-tfile */ ! 670: #define DBX_DEBUGGING_INFO /* generate stabs (OSF/rose) */ ! 671: #define MIPS_DEBUGGING_INFO /* MIPS specific debugging info */ ! 672: ! 673: #ifndef PREFERRED_DEBUGGING_TYPE /* assume SDB_DEBUGGING_INFO */ ! 674: #define PREFERRED_DEBUGGING_TYPE ((len > 1 && !strncmp (str, "ggdb", len)) ? DBX_DEBUG : SDB_DEBUG) ! 675: #endif ! 676: ! 677: /* By default, turn on GDB extensions. */ ! 678: #define DEFAULT_GDB_EXTENSIONS 1 ! 679: ! 680: /* If we are passing smuggling stabs through the MIPS ECOFF object ! 681: format, put a comment in front of the .stab<x> operation so ! 682: that the MIPS assembler does not choke. The mips-tfile program ! 683: will correctly put the stab into the object file. */ ! 684: ! 685: #define ASM_STABS_OP ((TARGET_GAS) ? ".stabs" : " #.stabs") ! 686: #define ASM_STABN_OP ((TARGET_GAS) ? ".stabn" : " #.stabn") ! 687: #define ASM_STABD_OP ((TARGET_GAS) ? ".stabd" : " #.stabd") ! 688: ! 689: /* Forward references to tags are allowed. */ ! 690: #define SDB_ALLOW_FORWARD_REFERENCES ! 691: ! 692: /* Unknown tags are also allowed. */ ! 693: #define SDB_ALLOW_UNKNOWN_REFERENCES ! 694: ! 695: /* On Sun 4, this limit is 2048. We use 1500 to be safe, ! 696: since the length can run past this up to a continuation point. */ ! 697: #define DBX_CONTIN_LENGTH 1500 ! 698: ! 699: ! 700: /* How to renumber registers for dbx and gdb. */ ! 701: #define DBX_REGISTER_NUMBER(REGNO) mips_dbx_regno[ (REGNO) ] ! 702: ! 703: ! 704: /* Overrides for the COFF debug format. */ ! 705: #define PUT_SDB_SCL(a) \ ! 706: do { \ ! 707: extern FILE *asm_out_text_file; \ ! 708: fprintf (asm_out_text_file, "\t.scl\t%d;", (a)); \ ! 709: } while (0) ! 710: ! 711: #define PUT_SDB_INT_VAL(a) \ ! 712: do { \ ! 713: extern FILE *asm_out_text_file; \ ! 714: fprintf (asm_out_text_file, "\t.val\t%d;", (a)); \ ! 715: } while (0) ! 716: ! 717: #define PUT_SDB_VAL(a) \ ! 718: do { \ ! 719: extern FILE *asm_out_text_file; \ ! 720: fputs ("\t.val\t", asm_out_text_file); \ ! 721: output_addr_const (asm_out_text_file, (a)); \ ! 722: fputc (';', asm_out_text_file); \ ! 723: } while (0) ! 724: ! 725: #define PUT_SDB_DEF(a) \ ! 726: do { \ ! 727: extern FILE *asm_out_text_file; \ ! 728: fprintf (asm_out_text_file, "\t%s.def\t", \ ! 729: (TARGET_GAS) ? "" : "#"); \ ! 730: ASM_OUTPUT_LABELREF (asm_out_text_file, a); \ ! 731: fputc (';', asm_out_text_file); \ ! 732: } while (0) ! 733: ! 734: #define PUT_SDB_PLAIN_DEF(a) \ ! 735: do { \ ! 736: extern FILE *asm_out_text_file; \ ! 737: fprintf (asm_out_text_file, "\t%s.def\t.%s;", \ ! 738: (TARGET_GAS) ? "" : "#", (a)); \ ! 739: } while (0) ! 740: ! 741: #define PUT_SDB_ENDEF \ ! 742: do { \ ! 743: extern FILE *asm_out_text_file; \ ! 744: fprintf (asm_out_text_file, "\t.endef\n"); \ ! 745: } while (0) ! 746: ! 747: #define PUT_SDB_TYPE(a) \ ! 748: do { \ ! 749: extern FILE *asm_out_text_file; \ ! 750: fprintf (asm_out_text_file, "\t.type\t0x%x;", (a)); \ ! 751: } while (0) ! 752: ! 753: #define PUT_SDB_SIZE(a) \ ! 754: do { \ ! 755: extern FILE *asm_out_text_file; \ ! 756: fprintf (asm_out_text_file, "\t.size\t%d;", (a)); \ ! 757: } while (0) ! 758: ! 759: #define PUT_SDB_DIM(a) \ ! 760: do { \ ! 761: extern FILE *asm_out_text_file; \ ! 762: fprintf (asm_out_text_file, "\t.dim\t%d;", (a)); \ ! 763: } while (0) ! 764: ! 765: #ifndef PUT_SDB_START_DIM ! 766: #define PUT_SDB_START_DIM \ ! 767: do { \ ! 768: extern FILE *asm_out_text_file; \ ! 769: fprintf (asm_out_text_file, "\t.dim\t"); \ ! 770: } while (0) ! 771: #endif ! 772: ! 773: #ifndef PUT_SDB_NEXT_DIM ! 774: #define PUT_SDB_NEXT_DIM(a) \ ! 775: do { \ ! 776: extern FILE *asm_out_text_file; \ ! 777: fprintf (asm_out_text_file, "%d,", a); \ ! 778: } while (0) ! 779: #endif ! 780: ! 781: #ifndef PUT_SDB_LAST_DIM ! 782: #define PUT_SDB_LAST_DIM(a) \ ! 783: do { \ ! 784: extern FILE *asm_out_text_file; \ ! 785: fprintf (asm_out_text_file, "%d;", a); \ ! 786: } while (0) ! 787: #endif ! 788: ! 789: #define PUT_SDB_TAG(a) \ ! 790: do { \ ! 791: extern FILE *asm_out_text_file; \ ! 792: fprintf (asm_out_text_file, "\t.tag\t"); \ ! 793: ASM_OUTPUT_LABELREF (asm_out_text_file, a); \ ! 794: fputc (';', asm_out_text_file); \ ! 795: } while (0) ! 796: ! 797: /* For block start and end, we create labels, so that ! 798: later we can figure out where the correct offset is. ! 799: The normal .ent/.end serve well enough for functions, ! 800: so those are just commented out. */ ! 801: ! 802: #define PUT_SDB_BLOCK_START(LINE) \ ! 803: do { \ ! 804: extern FILE *asm_out_text_file; \ ! 805: fprintf (asm_out_text_file, \ ! 806: "$Lb%d:\n\t%s.begin\t$Lb%d\t%d\n", \ ! 807: sdb_label_count, \ ! 808: (TARGET_GAS) ? "" : "#", \ ! 809: sdb_label_count, \ ! 810: (LINE)); \ ! 811: sdb_label_count++; \ ! 812: } while (0) ! 813: ! 814: #define PUT_SDB_BLOCK_END(LINE) \ ! 815: do { \ ! 816: extern FILE *asm_out_text_file; \ ! 817: fprintf (asm_out_text_file, \ ! 818: "$Le%d:\n\t%s.bend\t$Le%d\t%d\n", \ ! 819: sdb_label_count, \ ! 820: (TARGET_GAS) ? "" : "#", \ ! 821: sdb_label_count, \ ! 822: (LINE)); \ ! 823: sdb_label_count++; \ ! 824: } while (0) ! 825: ! 826: #define PUT_SDB_FUNCTION_START(LINE) ! 827: ! 828: #define PUT_SDB_FUNCTION_END(LINE) ! 829: ! 830: #define PUT_SDB_EPILOGUE_END(NAME) ! 831: ! 832: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ ! 833: sprintf ((BUFFER), ".%dfake", (NUMBER)); ! 834: ! 835: /* Correct the offset of automatic variables and arguments. Note that ! 836: the MIPS debug format wants all automatic variables and arguments ! 837: to be in terms of the virtual frame pointer (stack pointer before ! 838: any adjustment in the function), while the MIPS 3.0 linker wants ! 839: the frame pointer to be the stack pointer after the initial ! 840: adjustment. */ ! 841: ! 842: #define DEBUGGER_AUTO_OFFSET(X) mips_debugger_offset (X, 0) ! 843: #define DEBUGGER_ARG_OFFSET(OFFSET, X) mips_debugger_offset (X, OFFSET) ! 844: ! 845: ! 846: /* Tell collect that the object format is ECOFF */ ! 847: #ifndef OBJECT_FORMAT_ROSE ! 848: #define OBJECT_FORMAT_COFF /* Object file looks like COFF */ ! 849: #define EXTENDED_COFF /* ECOFF, not normal coff */ ! 850: #endif ! 851: ! 852: #if 0 /* These definitions normally have no effect because ! 853: MIPS systems define USE_COLLECT2, so ! 854: assemble_constructor does nothing anyway. */ ! 855: ! 856: /* Don't use the default definitions, because we don't have gld. ! 857: Also, we don't want stabs when generating ECOFF output. ! 858: Instead we depend on collect to handle these. */ ! 859: ! 860: #define ASM_OUTPUT_CONSTRUCTOR(file, name) ! 861: #define ASM_OUTPUT_DESTRUCTOR(file, name) ! 862: ! 863: #endif /* 0 */ ! 864: ! 865: /* Target machine storage layout */ ! 866: ! 867: /* Define this if most significant bit is lowest numbered ! 868: in instructions that operate on numbered bit-fields. ! 869: */ ! 870: #define BITS_BIG_ENDIAN 0 ! 871: ! 872: /* Define this if most significant byte of a word is the lowest numbered. */ ! 873: #ifndef BYTES_BIG_ENDIAN ! 874: #ifndef DECSTATION ! 875: #define BYTES_BIG_ENDIAN 1 ! 876: #else ! 877: #define BYTES_BIG_ENDIAN 0 ! 878: #endif ! 879: #endif ! 880: ! 881: /* Define this if most significant word of a multiword number is the lowest. */ ! 882: #ifndef WORDS_BIG_ENDIAN ! 883: #ifndef DECSTATION ! 884: #define WORDS_BIG_ENDIAN 1 ! 885: #else ! 886: #define WORDS_BIG_ENDIAN 0 ! 887: #endif ! 888: #endif ! 889: ! 890: /* Define macros to easily access the most and least significant words ! 891: without a lot of #ifdef's. */ ! 892: ! 893: #if WORDS_BIG_ENDIAN ! 894: #define MOST_SIGNIFICANT_WORD 0 ! 895: #define LEAST_SIGNIFICANT_WORD 1 ! 896: ! 897: #else ! 898: #define MOST_SIGNIFICANT_WORD 1 ! 899: #define LEAST_SIGNIFICANT_WORD 0 ! 900: #endif ! 901: ! 902: /* Number of bits in an addressable storage unit */ ! 903: #define BITS_PER_UNIT 8 ! 904: ! 905: /* Width in bits of a "word", which is the contents of a machine register. ! 906: Note that this is not necessarily the width of data type `int'; ! 907: if using 16-bit ints on a 68000, this would still be 32. ! 908: But on a machine with 16-bit registers, this would be 16. */ ! 909: #define BITS_PER_WORD 32 ! 910: ! 911: /* Width of a word, in units (bytes). */ ! 912: #define UNITS_PER_WORD 4 ! 913: ! 914: /* A C expression for the size in bits of the type `int' on the ! 915: target machine. If you don't define this, the default is one ! 916: word. */ ! 917: #define INT_TYPE_SIZE 32 ! 918: ! 919: /* A C expression for the size in bits of the type `short' on the ! 920: target machine. If you don't define this, the default is half a ! 921: word. (If this would be less than one storage unit, it is ! 922: rounded up to one unit.) */ ! 923: #define SHORT_TYPE_SIZE 16 ! 924: ! 925: /* A C expression for the size in bits of the type `long' on the ! 926: target machine. If you don't define this, the default is one ! 927: word. */ ! 928: #define LONG_TYPE_SIZE 32 ! 929: ! 930: /* A C expression for the size in bits of the type `long long' on the ! 931: target machine. If you don't define this, the default is two ! 932: words. */ ! 933: #define LONG_LONG_TYPE_SIZE 64 ! 934: ! 935: /* A C expression for the size in bits of the type `char' on the ! 936: target machine. If you don't define this, the default is one ! 937: quarter of a word. (If this would be less than one storage unit, ! 938: it is rounded up to one unit.) */ ! 939: #define CHAR_TYPE_SIZE BITS_PER_UNIT ! 940: ! 941: /* A C expression for the size in bits of the type `float' on the ! 942: target machine. If you don't define this, the default is one ! 943: word. */ ! 944: #define FLOAT_TYPE_SIZE 32 ! 945: ! 946: /* A C expression for the size in bits of the type `double' on the ! 947: target machine. If you don't define this, the default is two ! 948: words. */ ! 949: #define DOUBLE_TYPE_SIZE 64 ! 950: ! 951: /* A C expression for the size in bits of the type `long double' on ! 952: the target machine. If you don't define this, the default is two ! 953: words. */ ! 954: #define LONG_DOUBLE_TYPE_SIZE 64 ! 955: ! 956: /* Width in bits of a pointer. ! 957: See also the macro `Pmode' defined below. */ ! 958: #define POINTER_SIZE 32 ! 959: ! 960: /* Allocation boundary (in *bits*) for storing pointers in memory. */ ! 961: #define POINTER_BOUNDARY 32 ! 962: ! 963: /* Allocation boundary (in *bits*) for storing arguments in argument list. */ ! 964: #define PARM_BOUNDARY 32 ! 965: ! 966: /* Allocation boundary (in *bits*) for the code of a function. */ ! 967: #define FUNCTION_BOUNDARY 32 ! 968: ! 969: /* Alignment of field after `int : 0' in a structure. */ ! 970: #define EMPTY_FIELD_BOUNDARY 32 ! 971: ! 972: /* Every structure's size must be a multiple of this. */ ! 973: /* 8 is observed right on a DECstation and on riscos 4.02. */ ! 974: #define STRUCTURE_SIZE_BOUNDARY 8 ! 975: ! 976: /* There is no point aligning anything to a rounder boundary than this. */ ! 977: #define BIGGEST_ALIGNMENT 64 ! 978: ! 979: /* Biggest alignment any structure field can require in bits. */ ! 980: #define BIGGEST_FIELD_ALIGNMENT 64 ! 981: ! 982: /* Set this nonzero if move instructions will actually fail to work ! 983: when given unaligned data. */ ! 984: #define STRICT_ALIGNMENT 1 ! 985: ! 986: /* Define this if you wish to imitate the way many other C compilers ! 987: handle alignment of bitfields and the structures that contain ! 988: them. ! 989: ! 990: The behavior is that the type written for a bitfield (`int', ! 991: `short', or other integer type) imposes an alignment for the ! 992: entire structure, as if the structure really did contain an ! 993: ordinary field of that type. In addition, the bitfield is placed ! 994: within the structure so that it would fit within such a field, ! 995: not crossing a boundary for it. ! 996: ! 997: Thus, on most machines, a bitfield whose type is written as `int' ! 998: would not cross a four-byte boundary, and would force four-byte ! 999: alignment for the whole structure. (The alignment used may not ! 1000: be four bytes; it is controlled by the other alignment ! 1001: parameters.) ! 1002: ! 1003: If the macro is defined, its definition should be a C expression; ! 1004: a nonzero value for the expression enables this behavior. */ ! 1005: ! 1006: #define PCC_BITFIELD_TYPE_MATTERS 1 ! 1007: ! 1008: /* If defined, a C expression to compute the alignment given to a ! 1009: constant that is being placed in memory. CONSTANT is the constant ! 1010: and ALIGN is the alignment that the object would ordinarily have. ! 1011: The value of this macro is used instead of that alignment to align ! 1012: the object. ! 1013: ! 1014: If this macro is not defined, then ALIGN is used. ! 1015: ! 1016: The typical use of this macro is to increase alignment for string ! 1017: constants to be word aligned so that `strcpy' calls that copy ! 1018: constants can be done inline. */ ! 1019: ! 1020: #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ ! 1021: ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \ ! 1022: && (ALIGN) < BITS_PER_WORD \ ! 1023: ? BITS_PER_WORD \ ! 1024: : (ALIGN)) ! 1025: ! 1026: /* If defined, a C expression to compute the alignment for a static ! 1027: variable. TYPE is the data type, and ALIGN is the alignment that ! 1028: the object would ordinarily have. The value of this macro is used ! 1029: instead of that alignment to align the object. ! 1030: ! 1031: If this macro is not defined, then ALIGN is used. ! 1032: ! 1033: One use of this macro is to increase alignment of medium-size ! 1034: data to make it all fit in fewer cache lines. Another is to ! 1035: cause character arrays to be word-aligned so that `strcpy' calls ! 1036: that copy constants to character arrays can be done inline. */ ! 1037: ! 1038: #undef DATA_ALIGNMENT ! 1039: #define DATA_ALIGNMENT(TYPE, ALIGN) \ ! 1040: ((((ALIGN) < BITS_PER_WORD) \ ! 1041: && (TREE_CODE (TYPE) == ARRAY_TYPE \ ! 1042: || TREE_CODE (TYPE) == UNION_TYPE \ ! 1043: || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) ! 1044: ! 1045: /* Define this macro if an argument declared as `char' or `short' in a ! 1046: prototype should actually be passed as an `int'. In addition to ! 1047: avoiding errors in certain cases of mismatch, it also makes for ! 1048: better code on certain machines. */ ! 1049: ! 1050: #define PROMOTE_PROTOTYPES ! 1051: ! 1052: /* Define this macro if an instruction to load a value narrower ! 1053: than a word from memory into a register also zero-extends the ! 1054: value to the whole register. */ ! 1055: ! 1056: #define BYTE_LOADS_ZERO_EXTEND ! 1057: ! 1058: ! 1059: /* Standard register usage. */ ! 1060: ! 1061: /* Number of actual hardware registers. ! 1062: The hardware registers are assigned numbers for the compiler ! 1063: from 0 to just below FIRST_PSEUDO_REGISTER. ! 1064: All registers that the compiler knows about must be given numbers, ! 1065: even those that are not normally considered general registers. ! 1066: ! 1067: On the Mips, we have 32 integer registers, 32 floating point registers ! 1068: and the special registers hi, lo, and fp status. */ ! 1069: ! 1070: #define FIRST_PSEUDO_REGISTER 67 ! 1071: ! 1072: /* 1 for registers that have pervasive standard uses ! 1073: and are not available for the register allocator. ! 1074: ! 1075: On the MIPS, see conventions, page D-2 */ ! 1076: ! 1077: #define FIXED_REGISTERS \ ! 1078: { \ ! 1079: 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 1080: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, \ ! 1081: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 1082: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 1083: 1, 1, 1 \ ! 1084: } ! 1085: ! 1086: ! 1087: /* 1 for registers not available across function calls. ! 1088: These must include the FIXED_REGISTERS and also any ! 1089: registers that can be used without being saved. ! 1090: The latter must include the registers where values are returned ! 1091: and the register where structure-value addresses are passed. ! 1092: Aside from that, you can include as many other registers as you like. */ ! 1093: ! 1094: #define CALL_USED_REGISTERS \ ! 1095: { \ ! 1096: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ ! 1097: 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, \ ! 1098: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ ! 1099: 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 1100: 1, 1, 1 \ ! 1101: } ! 1102: ! 1103: ! 1104: /* Internal macros to classify a register number as to whether it's a ! 1105: general purpose register, a floating point register, a ! 1106: multiply/divide register, or a status register. ! 1107: ! 1108: The macro FP_CALL_REG_P also allows registers $4 and $6 as floating ! 1109: point registers to pass floating point as per MIPS spec. */ ! 1110: ! 1111: #define GP_REG_FIRST 0 ! 1112: #define GP_REG_LAST 31 ! 1113: #define GP_REG_NUM (GP_REG_LAST - GP_REG_FIRST + 1) ! 1114: #define GP_DBX_FIRST 0 ! 1115: ! 1116: #define FP_REG_FIRST 32 ! 1117: #define FP_REG_LAST 63 ! 1118: #define FP_REG_NUM (FP_REG_LAST - FP_REG_FIRST + 1) ! 1119: #define FP_DBX_FIRST ((write_symbols == DBX_DEBUG) ? 38 : 32) ! 1120: ! 1121: #define MD_REG_FIRST 64 ! 1122: #define MD_REG_LAST 65 ! 1123: #define MD_REG_NUM (MD_REG_LAST - MD_REG_FIRST + 1) ! 1124: ! 1125: #define ST_REG_FIRST 66 ! 1126: #define ST_REG_LAST 66 ! 1127: #define ST_REG_NUM (ST_REG_LAST - ST_REG_FIRST + 1) ! 1128: ! 1129: #define AT_REGNUM (GP_REG_FIRST + 1) ! 1130: #define HI_REGNUM (MD_REG_FIRST + 0) ! 1131: #define LO_REGNUM (MD_REG_FIRST + 1) ! 1132: #define FPSW_REGNUM ST_REG_FIRST ! 1133: ! 1134: #define GP_REG_P(REGNO) ((unsigned) ((REGNO) - GP_REG_FIRST) < GP_REG_NUM) ! 1135: #define FP_REG_P(REGNO) ((unsigned) ((REGNO) - FP_REG_FIRST) < FP_REG_NUM) ! 1136: #define MD_REG_P(REGNO) ((unsigned) ((REGNO) - MD_REG_FIRST) < MD_REG_NUM) ! 1137: #define ST_REG_P(REGNO) ((REGNO) == ST_REG_FIRST) ! 1138: ! 1139: #define FP_CALL_REG_P(REGNO) \ ! 1140: (FP_REG_P (REGNO) \ ! 1141: || (REGNO) == (4 + GP_REG_FIRST) \ ! 1142: || (REGNO) == (6 + GP_REG_FIRST)) ! 1143: ! 1144: /* Return number of consecutive hard regs needed starting at reg REGNO ! 1145: to hold something of mode MODE. ! 1146: This is ordinarily the length in words of a value of mode MODE ! 1147: but can be less for certain modes in special long registers. ! 1148: ! 1149: On the MIPS, all general registers are one word long. Except on ! 1150: the R4000 with the FR bit set, the floating point uses register ! 1151: pairs, with the second register not being allocatable. */ ! 1152: ! 1153: #define HARD_REGNO_NREGS(REGNO, MODE) \ ! 1154: (! FP_REG_P (REGNO) \ ! 1155: ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) \ ! 1156: : (((GET_MODE_SIZE (MODE) + (2*UNITS_PER_WORD) - 1) / (2*UNITS_PER_WORD)) \ ! 1157: << (TARGET_FLOAT64 == 0))) ! 1158: ! 1159: /* Value is 1 if hard register REGNO can hold a value of machine-mode ! 1160: MODE. Require that DImode and DFmode be in even registers. For ! 1161: DImode, this makes some of the insns easier to write, since you ! 1162: don't have to worry about a DImode value in registers 3 & 4, ! 1163: producing a result in 4 & 5. ! 1164: ! 1165: To make the code simpler HARD_REGNO_MODE_OK now just references an ! 1166: array built in override_options. Because machmodes.h is not yet ! 1167: included before this file is processed, the MODE bound can't be ! 1168: expressed here. */ ! 1169: ! 1170: extern char mips_hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER]; ! 1171: ! 1172: #define HARD_REGNO_MODE_OK(REGNO, MODE) \ ! 1173: mips_hard_regno_mode_ok[ (int)(MODE) ][ (REGNO) ] ! 1174: ! 1175: /* Value is 1 if it is a good idea to tie two pseudo registers ! 1176: when one has mode MODE1 and one has mode MODE2. ! 1177: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, ! 1178: for any hard reg, then this must be 0 for correct output. */ ! 1179: #define MODES_TIEABLE_P(MODE1, MODE2) \ ! 1180: ((GET_MODE_CLASS (MODE1) == MODE_FLOAT || \ ! 1181: GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \ ! 1182: == (GET_MODE_CLASS (MODE2) == MODE_FLOAT || \ ! 1183: GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT)) ! 1184: ! 1185: /* MIPS pc is not overloaded on a register. */ ! 1186: /* #define PC_REGNUM xx */ ! 1187: ! 1188: /* Register to use for pushing function arguments. */ ! 1189: #define STACK_POINTER_REGNUM (GP_REG_FIRST + 29) ! 1190: ! 1191: /* Offset from the stack pointer to the first available location. */ ! 1192: #define STACK_POINTER_OFFSET 0 ! 1193: ! 1194: /* Base register for access to local variables of the function. */ ! 1195: #define FRAME_POINTER_REGNUM (GP_REG_FIRST + 30) ! 1196: ! 1197: /* Value should be nonzero if functions must have frame pointers. ! 1198: Zero means the frame pointer need not be set up (and parms ! 1199: may be accessed via the stack pointer) in functions that seem suitable. ! 1200: This is computed in `reload', in reload1.c. */ ! 1201: #define FRAME_POINTER_REQUIRED (current_function_calls_alloca) ! 1202: ! 1203: /* Base register for access to arguments of the function. */ ! 1204: #define ARG_POINTER_REGNUM GP_REG_FIRST ! 1205: ! 1206: /* Register in which static-chain is passed to a function. */ ! 1207: #define STATIC_CHAIN_REGNUM (GP_REG_FIRST + 2) ! 1208: ! 1209: /* If the structure value address is passed in a register, then ! 1210: `STRUCT_VALUE_REGNUM' should be the number of that register. */ ! 1211: /* #define STRUCT_VALUE_REGNUM (GP_REG_FIRST + 4) */ ! 1212: ! 1213: /* If the structure value address is not passed in a register, define ! 1214: `STRUCT_VALUE' as an expression returning an RTX for the place ! 1215: where the address is passed. If it returns 0, the address is ! 1216: passed as an "invisible" first argument. */ ! 1217: #define STRUCT_VALUE ((rtx)0) ! 1218: ! 1219: /* Mips registers used in prologue/epilogue code when the stack frame ! 1220: is larger than 32K bytes. These registers must come from the ! 1221: scratch register set, and not used for passing and returning ! 1222: arguments and any other information used in the calling sequence ! 1223: (such as pic). */ ! 1224: ! 1225: #define MIPS_TEMP1_REGNUM (GP_REG_FIRST + 8) ! 1226: #define MIPS_TEMP2_REGNUM (GP_REG_FIRST + 9) ! 1227: ! 1228: /* Define this macro if it is as good or better to call a constant ! 1229: function address than to call an address kept in a register. */ ! 1230: #define NO_FUNCTION_CSE 1 ! 1231: ! 1232: /* Define this macro if it is as good or better for a function to ! 1233: call itself with an explicit address than to call an address ! 1234: kept in a register. */ ! 1235: #define NO_RECURSIVE_FUNCTION_CSE 1 ! 1236: ! 1237: /* The register number of the register used to address a table of ! 1238: static data addresses in memory. In some cases this register is ! 1239: defined by a processor's "application binary interface" (ABI). ! 1240: When this macro is defined, RTL is generated for this register ! 1241: once, as with the stack pointer and frame pointer registers. If ! 1242: this macro is not defined, it is up to the machine-dependent ! 1243: files to allocate such a register (if necessary). */ ! 1244: #define PIC_OFFSET_TABLE_REGNUM (GP_REG_FIRST + 28) ! 1245: ! 1246: ! 1247: /* Define the classes of registers for register constraints in the ! 1248: machine description. Also define ranges of constants. ! 1249: ! 1250: One of the classes must always be named ALL_REGS and include all hard regs. ! 1251: If there is more than one class, another class must be named NO_REGS ! 1252: and contain no registers. ! 1253: ! 1254: The name GENERAL_REGS must be the name of a class (or an alias for ! 1255: another name such as ALL_REGS). This is the class of registers ! 1256: that is allowed by "g" or "r" in a register constraint. ! 1257: Also, registers outside this class are allocated only when ! 1258: instructions express preferences for them. ! 1259: ! 1260: The classes must be numbered in nondecreasing order; that is, ! 1261: a larger-numbered class must never be contained completely ! 1262: in a smaller-numbered class. ! 1263: ! 1264: For any two classes, it is very desirable that there be another ! 1265: class that represents their union. */ ! 1266: ! 1267: enum reg_class ! 1268: { ! 1269: NO_REGS, /* no registers in set */ ! 1270: GR_REGS, /* integer registers */ ! 1271: FP_REGS, /* floating point registers */ ! 1272: HI_REG, /* hi register */ ! 1273: LO_REG, /* lo register */ ! 1274: MD_REGS, /* multiply/divide registers (hi/lo) */ ! 1275: ST_REGS, /* status registers (fp status) */ ! 1276: ALL_REGS, /* all registers */ ! 1277: LIM_REG_CLASSES /* max value + 1 */ ! 1278: }; ! 1279: ! 1280: #define N_REG_CLASSES (int) LIM_REG_CLASSES ! 1281: ! 1282: #define GENERAL_REGS GR_REGS ! 1283: ! 1284: /* An initializer containing the names of the register classes as C ! 1285: string constants. These names are used in writing some of the ! 1286: debugging dumps. */ ! 1287: ! 1288: #define REG_CLASS_NAMES \ ! 1289: { \ ! 1290: "NO_REGS", \ ! 1291: "GR_REGS", \ ! 1292: "FP_REGS", \ ! 1293: "HI_REG", \ ! 1294: "LO_REG", \ ! 1295: "MD_REGS", \ ! 1296: "ST_REGS", \ ! 1297: "ALL_REGS" \ ! 1298: } ! 1299: ! 1300: /* An initializer containing the contents of the register classes, ! 1301: as integers which are bit masks. The Nth integer specifies the ! 1302: contents of class N. The way the integer MASK is interpreted is ! 1303: that register R is in the class if `MASK & (1 << R)' is 1. ! 1304: ! 1305: When the machine has more than 32 registers, an integer does not ! 1306: suffice. Then the integers are replaced by sub-initializers, ! 1307: braced groupings containing several integers. Each ! 1308: sub-initializer must be suitable as an initializer for the type ! 1309: `HARD_REG_SET' which is defined in `hard-reg-set.h'. */ ! 1310: ! 1311: #define REG_CLASS_CONTENTS \ ! 1312: { \ ! 1313: { 0x00000000, 0x00000000, 0x00000000 }, /* no registers */ \ ! 1314: { 0xffffffff, 0x00000000, 0x00000000 }, /* integer registers */ \ ! 1315: { 0x00000000, 0xffffffff, 0x00000000 }, /* floating registers*/ \ ! 1316: { 0x00000000, 0x00000000, 0x00000001 }, /* hi register */ \ ! 1317: { 0x00000000, 0x00000000, 0x00000002 }, /* lo register */ \ ! 1318: { 0x00000000, 0x00000000, 0x00000003 }, /* mul/div registers */ \ ! 1319: { 0x00000000, 0x00000000, 0x00000004 }, /* status registers */ \ ! 1320: { 0xffffffff, 0xffffffff, 0x00000007 } /* all registers */ \ ! 1321: } ! 1322: ! 1323: ! 1324: /* A C expression whose value is a register class containing hard ! 1325: register REGNO. In general there is more that one such class; ! 1326: choose a class which is "minimal", meaning that no smaller class ! 1327: also contains the register. */ ! 1328: ! 1329: extern enum reg_class mips_regno_to_class[]; ! 1330: ! 1331: #define REGNO_REG_CLASS(REGNO) mips_regno_to_class[ (REGNO) ] ! 1332: ! 1333: /* A macro whose definition is the name of the class to which a ! 1334: valid base register must belong. A base register is one used in ! 1335: an address which is the register value plus a displacement. */ ! 1336: ! 1337: #define BASE_REG_CLASS GR_REGS ! 1338: ! 1339: /* A macro whose definition is the name of the class to which a ! 1340: valid index register must belong. An index register is one used ! 1341: in an address where its value is either multiplied by a scale ! 1342: factor or added to another register (as well as added to a ! 1343: displacement). */ ! 1344: ! 1345: #define INDEX_REG_CLASS GR_REGS ! 1346: ! 1347: ! 1348: /* REGISTER AND CONSTANT CLASSES */ ! 1349: ! 1350: /* Get reg_class from a letter such as appears in the machine ! 1351: description. ! 1352: ! 1353: DEFINED REGISTER CLASSES: ! 1354: ! 1355: 'd' General (aka integer) registers ! 1356: 'f' Floating point registers ! 1357: 'h' Hi register ! 1358: 'l' Lo register ! 1359: 'x' Multiply/divide registers ! 1360: 'z' FP Status register */ ! 1361: ! 1362: extern enum reg_class mips_char_to_class[]; ! 1363: ! 1364: #define REG_CLASS_FROM_LETTER(C) mips_char_to_class[ (C) ] ! 1365: ! 1366: /* The letters I, J, K, L, M, N, O, and P in a register constraint ! 1367: string can be used to stand for particular ranges of immediate ! 1368: operands. This macro defines what the ranges are. C is the ! 1369: letter, and VALUE is a constant value. Return 1 if VALUE is ! 1370: in the range specified by C. */ ! 1371: ! 1372: /* For MIPS: ! 1373: ! 1374: `I' is used for the range of constants an arithmetic insn can ! 1375: actually contain (16 bits signed integers). ! 1376: ! 1377: `J' is used for the range which is just zero (ie, $r0). ! 1378: ! 1379: `K' is used for the range of constants a logical insn can actually ! 1380: contain (16 bit zero-extended integers). ! 1381: ! 1382: `L' is used for the range of constants that be loaded with lui ! 1383: (ie, the bottom 16 bits are zero). ! 1384: ! 1385: `M' is used for the range of constants that take two words to load ! 1386: (ie, not matched by `I', `K', and `L'). ! 1387: ! 1388: `N' is used for negative 16 bit constants. ! 1389: ! 1390: `O' is an exact power of 2 (not yet used in the md file). ! 1391: ! 1392: `P' is used for positive 16 bit constants. */ ! 1393: ! 1394: #define SMALL_INT(X) ((unsigned) (INTVAL (X) + 0x8000) < 0x10000) ! 1395: #define SMALL_INT_UNSIGNED(X) ((unsigned) (INTVAL (X)) < 0x10000) ! 1396: ! 1397: #define CONST_OK_FOR_LETTER_P(VALUE, C) \ ! 1398: ((C) == 'I' ? ((unsigned) ((VALUE) + 0x8000) < 0x10000) \ ! 1399: : (C) == 'J' ? ((VALUE) == 0) \ ! 1400: : (C) == 'K' ? ((unsigned) (VALUE) < 0x10000) \ ! 1401: : (C) == 'L' ? (((VALUE) & 0xffff0000) == (VALUE)) \ ! 1402: : (C) == 'M' ? ((((VALUE) & ~0x0000ffff) != 0) \ ! 1403: && (((VALUE) & ~0x0000ffff) != ~0x0000ffff) \ ! 1404: && ((VALUE) & 0x0000ffff) != 0) \ ! 1405: : (C) == 'N' ? (((VALUE) & ~0x0000ffff) == ~0x0000ffff) \ ! 1406: : (C) == 'O' ? (exact_log2 (VALUE) >= 0) \ ! 1407: : (C) == 'P' ? ((VALUE) != 0 && (((VALUE) & ~0x0000ffff) == 0)) \ ! 1408: : 0) ! 1409: ! 1410: /* Similar, but for floating constants, and defining letters G and H. ! 1411: Here VALUE is the CONST_DOUBLE rtx itself. */ ! 1412: ! 1413: /* For Mips ! 1414: ! 1415: 'G' : Floating point 0 */ ! 1416: ! 1417: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ ! 1418: ((C) == 'G' \ ! 1419: && CONST_DOUBLE_HIGH (VALUE) == 0 \ ! 1420: && CONST_DOUBLE_LOW (VALUE) == 0) ! 1421: ! 1422: /* Letters in the range `Q' through `U' may be defined in a ! 1423: machine-dependent fashion to stand for arbitrary operand types. ! 1424: The machine description macro `EXTRA_CONSTRAINT' is passed the ! 1425: operand as its first argument and the constraint letter as its ! 1426: second operand. ! 1427: ! 1428: `Q' is for memory references which take more than 1 instruction. ! 1429: `R' is for memory references which take 1 word for the instruction. ! 1430: `S' is for references to extern items which are PIC for OSF/rose. */ ! 1431: ! 1432: #define EXTRA_CONSTRAINT(OP,CODE) \ ! 1433: ((GET_CODE (OP) != MEM) ? FALSE \ ! 1434: : ((CODE) == 'Q') ? !simple_memory_operand (OP, GET_MODE (OP)) \ ! 1435: : ((CODE) == 'R') ? simple_memory_operand (OP, GET_MODE (OP)) \ ! 1436: : ((CODE) == 'S') ? (HALF_PIC_P () && CONSTANT_P (OP) \ ! 1437: && HALF_PIC_ADDRESS_P (OP)) \ ! 1438: : FALSE) ! 1439: ! 1440: /* Given an rtx X being reloaded into a reg required to be ! 1441: in class CLASS, return the class of reg to actually use. ! 1442: In general this is just CLASS; but on some machines ! 1443: in some cases it is preferable to use a more restrictive class. */ ! 1444: ! 1445: #define PREFERRED_RELOAD_CLASS(X,CLASS) \ ! 1446: ((GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ ! 1447: || GET_MODE_CLASS (GET_MODE (X)) == MODE_COMPLEX_FLOAT) \ ! 1448: ? (TARGET_SOFT_FLOAT ? GR_REGS : FP_REGS) \ ! 1449: : ((GET_MODE (X) == VOIDmode) \ ! 1450: ? GR_REGS \ ! 1451: : CLASS)) ! 1452: ! 1453: /* Certain machines have the property that some registers cannot be ! 1454: copied to some other registers without using memory. Define this ! 1455: macro on those machines to be a C expression that is non-zero if ! 1456: objects of mode MODE in registers of CLASS1 can only be copied to ! 1457: registers of class CLASS2 by storing a register of CLASS1 into ! 1458: memory and loading that memory location into a register of CLASS2. ! 1459: ! 1460: Do not define this macro if its value would always be zero. */ ! 1461: ! 1462: #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ ! 1463: (!TARGET_DEBUG_H_MODE \ ! 1464: && GET_MODE_CLASS (MODE) == MODE_INT \ ! 1465: && ((CLASS1 == FP_REGS && CLASS2 == GR_REGS) \ ! 1466: || (CLASS1 == GR_REGS && CLASS2 == FP_REGS))) ! 1467: ! 1468: /* Return the maximum number of consecutive registers ! 1469: needed to represent mode MODE in a register of class CLASS. */ ! 1470: ! 1471: #define CLASS_UNITS(mode, num) \ ! 1472: ((GET_MODE_SIZE (mode) + ((num) * UNITS_PER_WORD) - 1) / ((num) * UNITS_PER_WORD)) ! 1473: ! 1474: #define CLASS_MAX_NREGS(CLASS, MODE) \ ! 1475: (((CLASS) == FP_REGS && TARGET_FLOAT64) \ ! 1476: ? CLASS_UNITS (MODE, 2) \ ! 1477: : (((CLASS) == FP_REGS) \ ! 1478: ? (2*CLASS_UNITS (MODE, 1)) \ ! 1479: : CLASS_UNITS (MODE, 1))) ! 1480: ! 1481: /* If defined, this is a C expression whose value should be ! 1482: nonzero if the insn INSN has the effect of mysteriously ! 1483: clobbering the contents of hard register number REGNO. By ! 1484: "mysterious" we mean that the insn's RTL expression doesn't ! 1485: describe such an effect. ! 1486: ! 1487: If this macro is not defined, it means that no insn clobbers ! 1488: registers mysteriously. This is the usual situation; all else ! 1489: being equal, it is best for the RTL expression to show all the ! 1490: activity. */ ! 1491: ! 1492: /* #define INSN_CLOBBERS_REGNO_P(INSN, REGNO) */ ! 1493: ! 1494: ! 1495: /* Stack layout; function entry, exit and calling. */ ! 1496: ! 1497: /* Define this if pushing a word on the stack ! 1498: makes the stack pointer a smaller address. */ ! 1499: #define STACK_GROWS_DOWNWARD ! 1500: ! 1501: /* Define this if the nominal address of the stack frame ! 1502: is at the high-address end of the local variables; ! 1503: that is, each additional local variable allocated ! 1504: goes at a more negative offset in the frame. */ ! 1505: /* #define FRAME_GROWS_DOWNWARD */ ! 1506: ! 1507: /* Offset within stack frame to start allocating local variables at. ! 1508: If FRAME_GROWS_DOWNWARD, this is the offset to the END of the ! 1509: first local allocated. Otherwise, it is the offset to the BEGINNING ! 1510: of the first local allocated. */ ! 1511: #define STARTING_FRAME_OFFSET current_function_outgoing_args_size ! 1512: ! 1513: /* Offset from the stack pointer register to an item dynamically ! 1514: allocated on the stack, e.g., by `alloca'. ! 1515: ! 1516: The default value for this macro is `STACK_POINTER_OFFSET' plus the ! 1517: length of the outgoing arguments. The default is correct for most ! 1518: machines. See `function.c' for details. ! 1519: ! 1520: The MIPS ABI states that functions which dynamically allocate the ! 1521: stack must not have 0 for STACK_DYNAMIC_OFFSET, since it looks like ! 1522: we are trying to create a second frame pointer to the function, so ! 1523: allocate some stack space to make it happy. ! 1524: ! 1525: However, the linker currently complains about linking any code that ! 1526: dynamically allocates stack space, and there seems to be a bug in ! 1527: STACK_DYNAMIC_OFFSET, so don't define this right now. */ ! 1528: ! 1529: #if 0 ! 1530: #define STACK_DYNAMIC_OFFSET(FUNDECL) \ ! 1531: ((current_function_outgoing_args_size == 0 && current_function_calls_alloca) \ ! 1532: ? 4*UNITS_PER_WORD \ ! 1533: : current_function_outgoing_args_size) ! 1534: #endif ! 1535: ! 1536: /* Structure to be filled in by compute_frame_size with register ! 1537: save masks, and offsets for the current function. */ ! 1538: ! 1539: struct mips_frame_info ! 1540: { ! 1541: long total_size; /* # bytes that the entire frame takes up */ ! 1542: long var_size; /* # bytes that variables take up */ ! 1543: long args_size; /* # bytes that outgoing arguments take up */ ! 1544: long extra_size; /* # bytes of extra gunk */ ! 1545: int gp_reg_size; /* # bytes needed to store gp regs */ ! 1546: int fp_reg_size; /* # bytes needed to store fp regs */ ! 1547: long mask; /* mask of saved gp registers */ ! 1548: long fmask; /* mask of saved fp registers */ ! 1549: long gp_save_offset; /* offset from vfp to store gp registers */ ! 1550: long fp_save_offset; /* offset from vfp to store fp registers */ ! 1551: long gp_sp_offset; /* offset from new sp to store gp registers */ ! 1552: long fp_sp_offset; /* offset from new sp to store fp registers */ ! 1553: int initialized; /* != 0 if frame size already calculated */ ! 1554: int num_gp; /* number of gp registers saved */ ! 1555: int num_fp; /* number of fp registers saved */ ! 1556: }; ! 1557: ! 1558: extern struct mips_frame_info current_frame_info; ! 1559: ! 1560: /* Store in the variable DEPTH the initial difference between the ! 1561: frame pointer reg contents and the stack pointer reg contents, ! 1562: as of the start of the function body. This depends on the layout ! 1563: of the fixed parts of the stack frame and on how registers are saved. */ ! 1564: ! 1565: /* #define INITIAL_FRAME_POINTER_OFFSET(VAR) \ ! 1566: ((VAR) = compute_frame_size (get_frame_size ())) */ ! 1567: ! 1568: /* If defined, this macro specifies a table of register pairs used to ! 1569: eliminate unneeded registers that point into the stack frame. If ! 1570: it is not defined, the only elimination attempted by the compiler ! 1571: is to replace references to the frame pointer with references to ! 1572: the stack pointer. ! 1573: ! 1574: The definition of this macro is a list of structure ! 1575: initializations, each of which specifies an original and ! 1576: replacement register. ! 1577: ! 1578: On some machines, the position of the argument pointer is not ! 1579: known until the compilation is completed. In such a case, a ! 1580: separate hard register must be used for the argument pointer. ! 1581: This register can be eliminated by replacing it with either the ! 1582: frame pointer or the argument pointer, depending on whether or not ! 1583: the frame pointer has been eliminated. ! 1584: ! 1585: In this case, you might specify: ! 1586: #define ELIMINABLE_REGS \ ! 1587: {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ ! 1588: {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ ! 1589: {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} ! 1590: ! 1591: Note that the elimination of the argument pointer with the stack ! 1592: pointer is specified first since that is the preferred elimination. */ ! 1593: ! 1594: #define ELIMINABLE_REGS \ ! 1595: {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ ! 1596: { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ ! 1597: { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} ! 1598: ! 1599: ! 1600: /* A C expression that returns non-zero if the compiler is allowed to ! 1601: try to replace register number FROM-REG with register number ! 1602: TO-REG. This macro need only be defined if `ELIMINABLE_REGS' is ! 1603: defined, and will usually be the constant 1, since most of the ! 1604: cases preventing register elimination are things that the compiler ! 1605: already knows about. */ ! 1606: ! 1607: #define CAN_ELIMINATE(FROM, TO) \ ! 1608: (!frame_pointer_needed \ ! 1609: || ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM)) ! 1610: ! 1611: /* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It ! 1612: specifies the initial difference between the specified pair of ! 1613: registers. This macro must be defined if `ELIMINABLE_REGS' is ! 1614: defined. */ ! 1615: ! 1616: #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ ! 1617: { compute_frame_size (get_frame_size ()); \ ! 1618: if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ ! 1619: (OFFSET) = 0; \ ! 1620: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \ ! 1621: (OFFSET) = current_frame_info.total_size; \ ! 1622: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ ! 1623: (OFFSET) = current_frame_info.total_size; \ ! 1624: else \ ! 1625: abort (); \ ! 1626: } ! 1627: ! 1628: ! 1629: /* If we generate an insn to push BYTES bytes, ! 1630: this says how many the stack pointer really advances by. ! 1631: On the vax, sp@- in a byte insn really pushes a word. */ ! 1632: ! 1633: /* #define PUSH_ROUNDING(BYTES) 0 */ ! 1634: ! 1635: /* If defined, the maximum amount of space required for outgoing ! 1636: arguments will be computed and placed into the variable ! 1637: `current_function_outgoing_args_size'. No space will be pushed ! 1638: onto the stack for each call; instead, the function prologue ! 1639: should increase the stack frame size by this amount. ! 1640: ! 1641: It is not proper to define both `PUSH_ROUNDING' and ! 1642: `ACCUMULATE_OUTGOING_ARGS'. */ ! 1643: #define ACCUMULATE_OUTGOING_ARGS ! 1644: ! 1645: /* Offset from the argument pointer register to the first argument's ! 1646: address. On some machines it may depend on the data type of the ! 1647: function. ! 1648: ! 1649: If `ARGS_GROW_DOWNWARD', this is the offset to the location above ! 1650: the first argument's address. ! 1651: ! 1652: On the MIPS, we must skip the first argument position if we are ! 1653: returning a structure or a union, to account for it's address being ! 1654: passed in $4. However, at the current time, this produces a compiler ! 1655: that can't bootstrap, so comment it out for now. */ ! 1656: ! 1657: #if 0 ! 1658: #define FIRST_PARM_OFFSET(FNDECL) \ ! 1659: (FNDECL != 0 \ ! 1660: && TREE_TYPE (FNDECL) != 0 \ ! 1661: && TREE_TYPE (TREE_TYPE (FNDECL)) != 0 \ ! 1662: && (TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == RECORD_TYPE \ ! 1663: || TREE_CODE (TREE_TYPE (TREE_TYPE (FNDECL))) == UNION_TYPE) \ ! 1664: ? UNITS_PER_WORD \ ! 1665: : 0) ! 1666: #else ! 1667: #define FIRST_PARM_OFFSET(FNDECL) 0 ! 1668: #endif ! 1669: ! 1670: /* When a parameter is passed in a register, stack space is still ! 1671: allocated for it. For the MIPS, stack space must be allocated, cf ! 1672: Asm Lang Prog Guide page 7-8. ! 1673: ! 1674: BEWARE that some space is also allocated for non existing arguments ! 1675: in register. In case an argument list is of form GF used registers ! 1676: are a0 (a2,a3), but we should push over a1... */ ! 1677: ! 1678: #define REG_PARM_STACK_SPACE(FNDECL) ((4*UNITS_PER_WORD) - FIRST_PARM_OFFSET (FNDECL)) ! 1679: ! 1680: /* Define this if it is the responsibility of the caller to ! 1681: allocate the area reserved for arguments passed in registers. ! 1682: If `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect ! 1683: of this macro is to determine whether the space is included in ! 1684: `current_function_outgoing_args_size'. */ ! 1685: #define OUTGOING_REG_PARM_STACK_SPACE ! 1686: ! 1687: /* Align stack frames on 64 bits (Double Word ). */ ! 1688: #define STACK_BOUNDARY 64 ! 1689: ! 1690: /* Make sure 16 bytes are always allocated on the stack. */ ! 1691: ! 1692: #ifndef STACK_ARGS_ADJUST ! 1693: #define STACK_ARGS_ADJUST(SIZE) \ ! 1694: { \ ! 1695: if (SIZE.constant < 16) \ ! 1696: SIZE.constant = 16; \ ! 1697: } ! 1698: #endif ! 1699: ! 1700: ! 1701: /* A C expression that should indicate the number of bytes of its ! 1702: own arguments that a function function pops on returning, or 0 ! 1703: if the function pops no arguments and the caller must therefore ! 1704: pop them all after the function returns. ! 1705: ! 1706: FUNTYPE is a C variable whose value is a tree node that ! 1707: describes the function in question. Normally it is a node of ! 1708: type `FUNCTION_TYPE' that describes the data type of the function. ! 1709: From this it is possible to obtain the data types of the value ! 1710: and arguments (if known). ! 1711: ! 1712: When a call to a library function is being considered, FUNTYPE ! 1713: will contain an identifier node for the library function. Thus, ! 1714: if you need to distinguish among various library functions, you ! 1715: can do so by their names. Note that "library function" in this ! 1716: context means a function used to perform arithmetic, whose name ! 1717: is known specially in the compiler and was not mentioned in the ! 1718: C code being compiled. ! 1719: ! 1720: STACK-SIZE is the number of bytes of arguments passed on the ! 1721: stack. If a variable number of bytes is passed, it is zero, and ! 1722: argument popping will always be the responsibility of the ! 1723: calling function. */ ! 1724: ! 1725: #define RETURN_POPS_ARGS(FUNTYPE, SIZE) 0 ! 1726: ! 1727: ! 1728: /* Symbolic macros for the registers used to return integer and floating ! 1729: point values. */ ! 1730: ! 1731: #define GP_RETURN (GP_REG_FIRST + 2) ! 1732: #define FP_RETURN ((TARGET_SOFT_FLOAT) ? GP_RETURN : (FP_REG_FIRST + 0)) ! 1733: ! 1734: /* Symbolic macros for the first/last argument registers. */ ! 1735: ! 1736: #define GP_ARG_FIRST (GP_REG_FIRST + 4) ! 1737: #define GP_ARG_LAST (GP_REG_FIRST + 7) ! 1738: #define FP_ARG_FIRST (FP_REG_FIRST + 12) ! 1739: #define FP_ARG_LAST (FP_REG_FIRST + 15) ! 1740: ! 1741: #define MAX_ARGS_IN_REGISTERS 4 ! 1742: ! 1743: /* Define how to find the value returned by a library function ! 1744: assuming the value has mode MODE. */ ! 1745: ! 1746: #define LIBCALL_VALUE(MODE) \ ! 1747: gen_rtx (REG, MODE, \ ! 1748: (GET_MODE_CLASS (MODE) == MODE_FLOAT) \ ! 1749: ? FP_RETURN \ ! 1750: : GP_RETURN) ! 1751: ! 1752: /* Define how to find the value returned by a function. ! 1753: VALTYPE is the data type of the value (as a tree). ! 1754: If the precise function being called is known, FUNC is its FUNCTION_DECL; ! 1755: otherwise, FUNC is 0. */ ! 1756: ! 1757: #define FUNCTION_VALUE(VALTYPE, FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE)) ! 1758: ! 1759: ! 1760: /* 1 if N is a possible register number for a function value. ! 1761: On the MIPS, R2 R3 and F0 F2 are the only register thus used. ! 1762: Currently, R2 and F0 are only implemented here (C has no complex type) */ ! 1763: ! 1764: #define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN || (N) == FP_RETURN) ! 1765: ! 1766: /* 1 if N is a possible register number for function argument passing. */ ! 1767: ! 1768: #define FUNCTION_ARG_REGNO_P(N) (((N) >= GP_ARG_FIRST && (N) <= GP_ARG_LAST) \ ! 1769: || ((N) >= FP_ARG_FIRST && (N) <= FP_ARG_LAST \ ! 1770: && (0 == (N) % 2))) ! 1771: ! 1772: /* A C expression which can inhibit the returning of certain function ! 1773: values in registers, based on the type of value. A nonzero value says ! 1774: to return the function value in memory, just as large structures are ! 1775: always returned. Here TYPE will be a C expression of type ! 1776: `tree', representing the data type of the value. ! 1777: ! 1778: Note that values of mode `BLKmode' must be explicitly ! 1779: handled by this macro. Also, the option `-fpcc-struct-return' ! 1780: takes effect regardless of this macro. On most systems, it is ! 1781: possible to leave the macro undefined; this causes a default ! 1782: definition to be used, whose value is the constant 1 for BLKmode ! 1783: values, and 0 otherwise. ! 1784: ! 1785: GCC normally converts 1 byte structures into chars, 2 byte ! 1786: structs into shorts, and 4 byte structs into ints, and returns ! 1787: them this way. Defining the following macro overrides this, ! 1788: to give us MIPS cc compatibility. */ ! 1789: ! 1790: #define RETURN_IN_MEMORY(TYPE) \ ! 1791: (TYPE_MODE (TYPE) == BLKmode) ! 1792: ! 1793: /* A code distinguishing the floating point format of the target ! 1794: machine. There are three defined values: IEEE_FLOAT_FORMAT, ! 1795: VAX_FLOAT_FORMAT, and UNKNOWN_FLOAT_FORMAT. */ ! 1796: ! 1797: #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT ! 1798: ! 1799: ! 1800: /* Define a data type for recording info about an argument list ! 1801: during the scan of that argument list. This data type should ! 1802: hold all necessary information about the function itself ! 1803: and about the args processed so far, enough to enable macros ! 1804: such as FUNCTION_ARG to determine where the next arg should go. ! 1805: */ ! 1806: ! 1807: typedef struct mips_args { ! 1808: int gp_reg_found; /* whether a gp register was found yet */ ! 1809: int arg_number; /* argument number */ ! 1810: int arg_words; /* # total words the arguments take */ ! 1811: int num_adjusts; /* number of adjustments made */ ! 1812: /* Adjustments made to args pass in regs. */ ! 1813: struct rtx_def *adjust[MAX_ARGS_IN_REGISTERS]; ! 1814: } CUMULATIVE_ARGS; ! 1815: ! 1816: /* Initialize a variable CUM of type CUMULATIVE_ARGS ! 1817: for a call to a function whose data type is FNTYPE. ! 1818: For a library call, FNTYPE is 0. ! 1819: ! 1820: */ ! 1821: ! 1822: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \ ! 1823: init_cumulative_args (&CUM, FNTYPE, LIBNAME) \ ! 1824: ! 1825: /* Update the data in CUM to advance over an argument ! 1826: of mode MODE and data type TYPE. ! 1827: (TYPE is null for libcalls where that information may not be available.) */ ! 1828: ! 1829: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ ! 1830: function_arg_advance (&CUM, MODE, TYPE, NAMED) ! 1831: ! 1832: /* Determine where to put an argument to a function. ! 1833: Value is zero to push the argument on the stack, ! 1834: or a hard register in which to store the argument. ! 1835: ! 1836: MODE is the argument's machine mode. ! 1837: TYPE is the data type of the argument (as a tree). ! 1838: This is null for libcalls where that information may ! 1839: not be available. ! 1840: CUM is a variable of type CUMULATIVE_ARGS which gives info about ! 1841: the preceding args and about the function being called. ! 1842: NAMED is nonzero if this argument is a named parameter ! 1843: (otherwise it is an extra parameter matching an ellipsis). */ ! 1844: ! 1845: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ ! 1846: function_arg( &CUM, MODE, TYPE, NAMED) ! 1847: ! 1848: /* For an arg passed partly in registers and partly in memory, ! 1849: this is the number of registers used. ! 1850: For args passed entirely in registers or entirely in memory, zero. */ ! 1851: ! 1852: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ ! 1853: function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED) ! 1854: ! 1855: /* If defined, a C expression that gives the alignment boundary, in ! 1856: bits, of an argument with the specified mode and type. If it is ! 1857: not defined, `PARM_BOUNDARY' is used for all arguments. */ ! 1858: ! 1859: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ ! 1860: (((TYPE) != 0) \ ! 1861: ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY) \ ! 1862: ? PARM_BOUNDARY \ ! 1863: : TYPE_ALIGN(TYPE)) \ ! 1864: : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY) \ ! 1865: ? PARM_BOUNDARY \ ! 1866: : GET_MODE_ALIGNMENT(MODE))) ! 1867: ! 1868: ! 1869: /* This macro generates the assembly code for function entry. ! 1870: FILE is a stdio stream to output the code to. ! 1871: SIZE is an int: how many units of temporary storage to allocate. ! 1872: Refer to the array `regs_ever_live' to determine which registers ! 1873: to save; `regs_ever_live[I]' is nonzero if register number I ! 1874: is ever used in the function. This macro is responsible for ! 1875: knowing which registers should not be saved even if used. */ ! 1876: ! 1877: #define FUNCTION_PROLOGUE(FILE, SIZE) function_prologue(FILE, SIZE) ! 1878: ! 1879: /* This macro generates the assembly code for function exit, ! 1880: on machines that need it. If FUNCTION_EPILOGUE is not defined ! 1881: then individual return instructions are generated for each ! 1882: return statement. Args are same as for FUNCTION_PROLOGUE. */ ! 1883: ! 1884: #define FUNCTION_EPILOGUE(FILE, SIZE) function_epilogue(FILE, SIZE) ! 1885: ! 1886: /* Define the number of delay slots needed for the function epilogue. ! 1887: ! 1888: On the mips, we need a slot if either no stack has been allocated, ! 1889: or the only register saved is the return register. */ ! 1890: ! 1891: #define DELAY_SLOTS_FOR_EPILOGUE mips_epilogue_delay_slots () ! 1892: ! 1893: /* Define whether INSN can be placed in delay slot N for the epilogue. ! 1894: No references to the stack must be made, since on the MIPS, the ! 1895: delay slot is done after the stack has been cleaned up. */ ! 1896: ! 1897: #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN,N) \ ! 1898: (get_attr_dslot (INSN) == DSLOT_NO \ ! 1899: && get_attr_length (INSN) == 1 \ ! 1900: && ! epilogue_reg_mentioned_p (PATTERN (INSN))) ! 1901: ! 1902: /* Tell prologue and epilogue if register REGNO should be saved / restored. */ ! 1903: ! 1904: #define MUST_SAVE_REGISTER(regno) \ ! 1905: ((regs_ever_live[regno] && !call_used_regs[regno]) \ ! 1906: || (regno == FRAME_POINTER_REGNUM && frame_pointer_needed) \ ! 1907: || (regno == (GP_REG_FIRST + 31) && regs_ever_live[GP_REG_FIRST + 31])) ! 1908: ! 1909: /* ALIGN FRAMES on double word boundaries */ ! 1910: ! 1911: #define MIPS_STACK_ALIGN(LOC) (((LOC)+7) & ~7) ! 1912: ! 1913: ! 1914: /* Output assembler code to FILE to increment profiler label # LABELNO ! 1915: for profiling a function entry. */ ! 1916: ! 1917: #define FUNCTION_PROFILER(FILE, LABELNO) \ ! 1918: { \ ! 1919: fprintf (FILE, "\t.set\tnoreorder\n"); \ ! 1920: fprintf (FILE, "\t.set\tnoat\n"); \ ! 1921: fprintf (FILE, "\tmove\t%s,%s\t\t# save current return address\n", \ ! 1922: reg_names[GP_REG_FIRST + 1], reg_names[GP_REG_FIRST + 31]); \ ! 1923: fprintf (FILE, "\tjal\t_mcount\n"); \ ! 1924: fprintf (FILE, "\tsubu\t%s,%s,8\t\t# _mcount pops 2 words from stack\n", \ ! 1925: reg_names[STACK_POINTER_REGNUM], \ ! 1926: reg_names[STACK_POINTER_REGNUM]); \ ! 1927: fprintf (FILE, "\t.set\treorder\n"); \ ! 1928: fprintf (FILE, "\t.set\tat\n"); \ ! 1929: } ! 1930: ! 1931: /* Define this macro if the code for function profiling should come ! 1932: before the function prologue. Normally, the profiling code comes ! 1933: after. */ ! 1934: ! 1935: /* #define PROFILE_BEFORE_PROLOGUE */ ! 1936: ! 1937: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, ! 1938: the stack pointer does not matter. The value is tested only in ! 1939: functions that have frame pointers. ! 1940: No definition is equivalent to always zero. */ ! 1941: ! 1942: #define EXIT_IGNORE_STACK 1 ! 1943: ! 1944: ! 1945: /* A C statement to output, on the stream FILE, assembler code for a ! 1946: block of data that contains the constant parts of a trampoline. ! 1947: This code should not include a label--the label is taken care of ! 1948: automatically. */ ! 1949: ! 1950: #define TRAMPOLINE_TEMPLATE(STREAM) \ ! 1951: { \ ! 1952: fprintf (STREAM, "\t.word\t0x03e00821\t\t# move $1,$31\n"); \ ! 1953: fprintf (STREAM, "\t.word\t0x04110001\t\t# bgezal $0,.+8\n"); \ ! 1954: fprintf (STREAM, "\t.word\t0x00000000\t\t# nop\n"); \ ! 1955: fprintf (STREAM, "\t.word\t0x8fe30010\t\t# lw $3,16($31)\n"); \ ! 1956: fprintf (STREAM, "\t.word\t0x8fe20014\t\t# lw $2,20($31)\n"); \ ! 1957: fprintf (STREAM, "\t.word\t0x00600008\t\t# jr $3\n"); \ ! 1958: fprintf (STREAM, "\t.word\t0x0020f821\t\t# move $31,$1\n"); \ ! 1959: fprintf (STREAM, "\t.word\t0x00000000\t\t# <function address>\n"); \ ! 1960: fprintf (STREAM, "\t.word\t0x00000000\t\t# <static chain value>\n"); \ ! 1961: } ! 1962: ! 1963: /* A C expression for the size in bytes of the trampoline, as an ! 1964: integer. */ ! 1965: ! 1966: #define TRAMPOLINE_SIZE (9*4) ! 1967: ! 1968: /* Alignment required for trampolines, in bits. ! 1969: ! 1970: If you don't define this macro, the value of `BIGGEST_ALIGNMENT' ! 1971: is used for aligning trampolines. */ ! 1972: ! 1973: /* #define TRAMPOLINE_ALIGNMENT 32 */ ! 1974: ! 1975: /* A C statement to initialize the variable parts of a trampoline. ! 1976: ADDR is an RTX for the address of the trampoline; FNADDR is an ! 1977: RTX for the address of the nested function; STATIC_CHAIN is an ! 1978: RTX for the static chain value that should be passed to the ! 1979: function when it is called. */ ! 1980: ! 1981: #ifndef INITIALIZE_TRAMPOLINE ! 1982: #define INITIALIZE_TRAMPOLINE(ADDR, FUNC, CHAIN) \ ! 1983: { \ ! 1984: rtx addr = ADDR; \ ! 1985: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 28)), FUNC); \ ! 1986: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (addr, 32)), CHAIN); \ ! 1987: \ ! 1988: /* Attempt to make stack executable */ \ ! 1989: emit_library_call (gen_rtx (SYMBOL_REF, Pmode, "__enable_execute_stack"), \ ! 1990: 0, VOIDmode, 1, addr, Pmode); \ ! 1991: } ! 1992: #endif /* INITIALIZE_TRAMPOLINE */ ! 1993: ! 1994: ! 1995: /* Attempt to turn on access permissions for the stack. */ ! 1996: ! 1997: #ifndef TRANSFER_FROM_TRAMPOLINE ! 1998: #define TRANSFER_FROM_TRAMPOLINE \ ! 1999: \ ! 2000: void \ ! 2001: __enable_execute_stack (addr) \ ! 2002: char *addr; \ ! 2003: { \ ! 2004: int size = getpagesize (); \ ! 2005: int mask = ~(size-1); \ ! 2006: char *page = (char *) (((int) addr) & mask); \ ! 2007: char *end = (char *) ((((int) (addr + TRAMPOLINE_SIZE)) & mask) + size); \ ! 2008: \ ! 2009: /* 7 is PROT_READ | PROT_WRITE | PROT_EXEC */ \ ! 2010: if (mprotect (page, end - page, 7) < 0) \ ! 2011: perror ("mprotect of trampoline code"); \ ! 2012: \ ! 2013: /* \ ! 2014: if (cacheflush (addr, TRAMPOLINE_SIZE, 1) < 0) \ ! 2015: perror ("cacheflush of trampoline code"); \ ! 2016: */ \ ! 2017: } ! 2018: #endif /* TRANSFER_FROM_TRAMPOLINE */ ! 2019: ! 2020: ! 2021: /* Addressing modes, and classification of registers for them. */ ! 2022: ! 2023: /* #define HAVE_POST_INCREMENT */ ! 2024: /* #define HAVE_POST_DECREMENT */ ! 2025: ! 2026: /* #define HAVE_PRE_DECREMENT */ ! 2027: /* #define HAVE_PRE_INCREMENT */ ! 2028: ! 2029: /* These assume that REGNO is a hard or pseudo reg number. ! 2030: They give nonzero only if REGNO is a hard reg of the suitable class ! 2031: or a pseudo reg currently allocated to a suitable hard reg. ! 2032: These definitions are NOT overridden anywhere. */ ! 2033: ! 2034: #define GP_REG_OR_PSEUDO_STRICT_P(regno) \ ! 2035: GP_REG_P((regno < FIRST_PSEUDO_REGISTER) ? regno : reg_renumber[regno]) ! 2036: ! 2037: #define GP_REG_OR_PSEUDO_NONSTRICT_P(regno) \ ! 2038: (((regno) >= FIRST_PSEUDO_REGISTER) || (GP_REG_P (regno))) ! 2039: ! 2040: #define REGNO_OK_FOR_INDEX_P(regno) GP_REG_OR_PSEUDO_STRICT_P (regno) ! 2041: #define REGNO_OK_FOR_BASE_P(regno) GP_REG_OR_PSEUDO_STRICT_P (regno) ! 2042: ! 2043: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx ! 2044: and check its validity for a certain class. ! 2045: We have two alternate definitions for each of them. ! 2046: The usual definition accepts all pseudo regs; the other rejects them all. ! 2047: The symbol REG_OK_STRICT causes the latter definition to be used. ! 2048: ! 2049: Most source files want to accept pseudo regs in the hope that ! 2050: they will get allocated to the class that the insn wants them to be in. ! 2051: Some source files that are used after register allocation ! 2052: need to be strict. */ ! 2053: ! 2054: #ifndef REG_OK_STRICT ! 2055: ! 2056: #define REG_OK_STRICT_P 0 ! 2057: #define REG_OK_FOR_INDEX_P(X) GP_REG_OR_PSEUDO_NONSTRICT_P (REGNO (X)) ! 2058: #define REG_OK_FOR_BASE_P(X) GP_REG_OR_PSEUDO_NONSTRICT_P (REGNO (X)) ! 2059: ! 2060: #else ! 2061: ! 2062: #define REG_OK_STRICT_P 1 ! 2063: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) ! 2064: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) ! 2065: ! 2066: #endif ! 2067: ! 2068: ! 2069: /* Maximum number of registers that can appear in a valid memory address. */ ! 2070: ! 2071: #define MAX_REGS_PER_ADDRESS 1 ! 2072: ! 2073: /* A C compound statement with a conditional `goto LABEL;' executed ! 2074: if X (an RTX) is a legitimate memory address on the target ! 2075: machine for a memory operand of mode MODE. ! 2076: ! 2077: It usually pays to define several simpler macros to serve as ! 2078: subroutines for this one. Otherwise it may be too complicated ! 2079: to understand. ! 2080: ! 2081: This macro must exist in two variants: a strict variant and a ! 2082: non-strict one. The strict variant is used in the reload pass. ! 2083: It must be defined so that any pseudo-register that has not been ! 2084: allocated a hard register is considered a memory reference. In ! 2085: contexts where some kind of register is required, a ! 2086: pseudo-register with no hard register must be rejected. ! 2087: ! 2088: The non-strict variant is used in other passes. It must be ! 2089: defined to accept all pseudo-registers in every context where ! 2090: some kind of register is required. ! 2091: ! 2092: Compiler source files that want to use the strict variant of ! 2093: this macro define the macro `REG_OK_STRICT'. You should use an ! 2094: `#ifdef REG_OK_STRICT' conditional to define the strict variant ! 2095: in that case and the non-strict variant otherwise. ! 2096: ! 2097: Typically among the subroutines used to define ! 2098: `GO_IF_LEGITIMATE_ADDRESS' are subroutines to check for ! 2099: acceptable registers for various purposes (one for base ! 2100: registers, one for index registers, and so on). Then only these ! 2101: subroutine macros need have two variants; the higher levels of ! 2102: macros may be the same whether strict or not. ! 2103: ! 2104: Normally, constant addresses which are the sum of a `symbol_ref' ! 2105: and an integer are stored inside a `const' RTX to mark them as ! 2106: constant. Therefore, there is no need to recognize such sums ! 2107: specifically as legitimate addresses. Normally you would simply ! 2108: recognize any `const' as legitimate. ! 2109: ! 2110: Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle ! 2111: constant sums that are not marked with `const'. It assumes ! 2112: that a naked `plus' indicates indexing. If so, then you *must* ! 2113: reject such naked constant sums as illegitimate addresses, so ! 2114: that none of them will be given to `PRINT_OPERAND_ADDRESS'. ! 2115: ! 2116: On some machines, whether a symbolic address is legitimate ! 2117: depends on the section that the address refers to. On these ! 2118: machines, define the macro `ENCODE_SECTION_INFO' to store the ! 2119: information into the `symbol_ref', and then check for it here. ! 2120: When you see a `const', you will have to look inside it to find ! 2121: the `symbol_ref' in order to determine the section. */ ! 2122: ! 2123: #if 1 ! 2124: #define GO_PRINTF(x) trace(x) ! 2125: #define GO_PRINTF2(x,y) trace(x,y) ! 2126: #define GO_DEBUG_RTX(x) debug_rtx(x) ! 2127: ! 2128: #else ! 2129: #define GO_PRINTF(x) ! 2130: #define GO_PRINTF2(x,y) ! 2131: #define GO_DEBUG_RTX(x) ! 2132: #endif ! 2133: ! 2134: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ ! 2135: { \ ! 2136: register rtx xinsn = (X); \ ! 2137: \ ! 2138: if (TARGET_DEBUG_B_MODE) \ ! 2139: { \ ! 2140: GO_PRINTF2 ("\n========== GO_IF_LEGITIMATE_ADDRESS, %sstrict\n", \ ! 2141: (REG_OK_STRICT_P) ? "" : "not "); \ ! 2142: GO_DEBUG_RTX (xinsn); \ ! 2143: } \ ! 2144: \ ! 2145: if (GET_CODE (xinsn) == REG && REG_OK_FOR_BASE_P (xinsn)) \ ! 2146: goto ADDR; \ ! 2147: \ ! 2148: if (CONSTANT_ADDRESS_P (xinsn)) \ ! 2149: goto ADDR; \ ! 2150: \ ! 2151: if (GET_CODE (xinsn) == PLUS) \ ! 2152: { \ ! 2153: register rtx xplus0 = XEXP (xinsn, 0); \ ! 2154: register rtx xplus1 = XEXP (xinsn, 1); \ ! 2155: register enum rtx_code code0 = GET_CODE (xplus0); \ ! 2156: register enum rtx_code code1 = GET_CODE (xplus1); \ ! 2157: \ ! 2158: if (code0 != REG && code1 == REG) \ ! 2159: { \ ! 2160: xplus0 = XEXP (xinsn, 1); \ ! 2161: xplus1 = XEXP (xinsn, 0); \ ! 2162: code0 = GET_CODE (xplus0); \ ! 2163: code1 = GET_CODE (xplus1); \ ! 2164: } \ ! 2165: \ ! 2166: if (code0 == REG && REG_OK_FOR_BASE_P (xplus0)) \ ! 2167: { \ ! 2168: if (code1 == CONST_INT) \ ! 2169: { \ ! 2170: register unsigned adj_offset = INTVAL (xplus1) + 0x8000; \ ! 2171: \ ! 2172: if ((adj_offset <= 0xffff) \ ! 2173: && (adj_offset + GET_MODE_SIZE (MODE) - 1 <= 0xffff)) \ ! 2174: goto ADDR; \ ! 2175: } \ ! 2176: \ ! 2177: /* For some code sequences, you actually get better code by \ ! 2178: pretending that the MIPS supports an address mode of a \ ! 2179: constant address + a register, even though the real \ ! 2180: machine doesn't support it. This is because the \ ! 2181: assembler can use $r1 to load just the high 16 bits, add \ ! 2182: in the register, and fold the low 16 bits into the memory \ ! 2183: reference, whereas the compiler generates a 4 instruction \ ! 2184: sequence. On the other hand, CSE is not as effective. \ ! 2185: It would be a win to generate the lui directly, but the \ ! 2186: MIPS assembler does not have syntax to generate the \ ! 2187: appropriate relocation. */ \ ! 2188: \ ! 2189: else if (!TARGET_DEBUG_A_MODE \ ! 2190: && code0 == REG \ ! 2191: && CONSTANT_ADDRESS_P (xplus1)) \ ! 2192: goto ADDR; \ ! 2193: } \ ! 2194: } \ ! 2195: \ ! 2196: if (TARGET_DEBUG_B_MODE) \ ! 2197: GO_PRINTF ("Not a legitimate address\n"); \ ! 2198: } ! 2199: ! 2200: ! 2201: /* A C expression that is 1 if the RTX X is a constant which is a ! 2202: valid address. This is defined to be the same as `CONSTANT_P (X)', ! 2203: but rejecting CONST_DOUBLE. */ ! 2204: #define CONSTANT_ADDRESS_P(X) \ ! 2205: ((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ ! 2206: || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \ ! 2207: || GET_CODE (X) == HIGH) && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X))) ! 2208: ! 2209: ! 2210: /* Nonzero if the constant value X is a legitimate general operand. ! 2211: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. ! 2212: ! 2213: At present, GAS doesn't understand li.[sd], so don't allow it ! 2214: to be generated at present. Also, the MIPS assembler does not ! 2215: grok li.d Infinity. */ ! 2216: ! 2217: #define LEGITIMATE_CONSTANT_P(X) \ ! 2218: (GET_CODE (X) != CONST_DOUBLE || mips_const_double_ok (X, GET_MODE (X))) ! 2219: ! 2220: ! 2221: /* A C compound statement that attempts to replace X with a valid ! 2222: memory address for an operand of mode MODE. WIN will be a C ! 2223: statement label elsewhere in the code; the macro definition may ! 2224: use ! 2225: ! 2226: GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); ! 2227: ! 2228: to avoid further processing if the address has become legitimate. ! 2229: ! 2230: X will always be the result of a call to `break_out_memory_refs', ! 2231: and OLDX will be the operand that was given to that function to ! 2232: produce X. ! 2233: ! 2234: The code generated by this macro should not alter the ! 2235: substructure of X. If it transforms X into a more legitimate ! 2236: form, it should assign X (which will always be a C variable) a ! 2237: new value. ! 2238: ! 2239: It is not necessary for this macro to come up with a legitimate ! 2240: address. The compiler has standard ways of doing so in all ! 2241: cases. In fact, it is safe for this macro to do nothing. But ! 2242: often a machine-dependent strategy can generate better code. ! 2243: ! 2244: For the MIPS, transform: ! 2245: ! 2246: memory(X + <large int>) ! 2247: ! 2248: into: ! 2249: ! 2250: Y = <large int> & ~0x7fff; ! 2251: Z = X + Y ! 2252: memory (Z + (<large int> & 0x7fff)); ! 2253: ! 2254: This is for CSE to find several similar references, and only use one Z. */ ! 2255: ! 2256: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ ! 2257: { \ ! 2258: register rtx xinsn = (X); \ ! 2259: \ ! 2260: if (TARGET_DEBUG_B_MODE) \ ! 2261: { \ ! 2262: GO_PRINTF ("\n========== LEGITIMIZE_ADDRESS\n"); \ ! 2263: GO_DEBUG_RTX (xinsn); \ ! 2264: } \ ! 2265: \ ! 2266: if (GET_CODE (xinsn) == PLUS) \ ! 2267: { \ ! 2268: register rtx xplus0 = XEXP (xinsn, 0); \ ! 2269: register rtx xplus1 = XEXP (xinsn, 1); \ ! 2270: register enum rtx_code code0 = GET_CODE (xplus0); \ ! 2271: register enum rtx_code code1 = GET_CODE (xplus1); \ ! 2272: \ ! 2273: if (code0 != REG && code1 == REG) \ ! 2274: { \ ! 2275: xplus0 = XEXP (xinsn, 1); \ ! 2276: xplus1 = XEXP (xinsn, 0); \ ! 2277: code0 = GET_CODE (xplus0); \ ! 2278: code1 = GET_CODE (xplus1); \ ! 2279: } \ ! 2280: \ ! 2281: if (code0 == REG && REG_OK_FOR_BASE_P (xplus0) \ ! 2282: && code1 == CONST_INT && !SMALL_INT (xplus1)) \ ! 2283: { \ ! 2284: rtx int_reg = gen_reg_rtx (Pmode); \ ! 2285: rtx ptr_reg = gen_reg_rtx (Pmode); \ ! 2286: \ ! 2287: emit_move_insn (int_reg, \ ! 2288: GEN_INT (INTVAL (xplus1) & ~ 0x7fff)); \ ! 2289: \ ! 2290: emit_insn (gen_rtx (SET, VOIDmode, \ ! 2291: ptr_reg, \ ! 2292: gen_rtx (PLUS, Pmode, xplus0, int_reg))); \ ! 2293: \ ! 2294: X = gen_rtx (PLUS, Pmode, ptr_reg, \ ! 2295: GEN_INT (INTVAL (xplus1) & 0x7fff)); \ ! 2296: goto WIN; \ ! 2297: } \ ! 2298: } \ ! 2299: \ ! 2300: if (TARGET_DEBUG_B_MODE) \ ! 2301: GO_PRINTF ("LEGITIMIZE_ADDRESS could not fix.\n"); \ ! 2302: } ! 2303: ! 2304: ! 2305: /* A C statement or compound statement with a conditional `goto ! 2306: LABEL;' executed if memory address X (an RTX) can have different ! 2307: meanings depending on the machine mode of the memory reference it ! 2308: is used for. ! 2309: ! 2310: Autoincrement and autodecrement addresses typically have ! 2311: mode-dependent effects because the amount of the increment or ! 2312: decrement is the size of the operand being addressed. Some ! 2313: machines have other mode-dependent addresses. Many RISC machines ! 2314: have no mode-dependent addresses. ! 2315: ! 2316: You may assume that ADDR is a valid address for the machine. */ ! 2317: ! 2318: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {} ! 2319: ! 2320: ! 2321: /* Define this macro if references to a symbol must be treated ! 2322: differently depending on something about the variable or ! 2323: function named by the symbol (such as what section it is in). ! 2324: ! 2325: The macro definition, if any, is executed immediately after the ! 2326: rtl for DECL has been created and stored in `DECL_RTL (DECL)'. ! 2327: The value of the rtl will be a `mem' whose address is a ! 2328: `symbol_ref'. ! 2329: ! 2330: The usual thing for this macro to do is to a flag in the ! 2331: `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified ! 2332: name string in the `symbol_ref' (if one bit is not enough ! 2333: information). ! 2334: ! 2335: The best way to modify the name string is by adding text to the ! 2336: beginning, with suitable punctuation to prevent any ambiguity. ! 2337: Allocate the new name in `saveable_obstack'. You will have to ! 2338: modify `ASM_OUTPUT_LABELREF' to remove and decode the added text ! 2339: and output the name accordingly. ! 2340: ! 2341: You can also check the information stored in the `symbol_ref' in ! 2342: the definition of `GO_IF_LEGITIMATE_ADDRESS' or ! 2343: `PRINT_OPERAND_ADDRESS'. */ ! 2344: ! 2345: #define ENCODE_SECTION_INFO(DECL) \ ! 2346: do \ ! 2347: { \ ! 2348: if (optimize && mips_section_threshold > 0 && TARGET_GP_OPT \ ! 2349: && TREE_CODE (DECL) == VAR_DECL) \ ! 2350: { \ ! 2351: int size = int_size_in_bytes (TREE_TYPE (DECL)); \ ! 2352: \ ! 2353: if (size > 0 && size <= mips_section_threshold) \ ! 2354: SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ ! 2355: } \ ! 2356: \ ! 2357: else if (HALF_PIC_P ()) \ ! 2358: HALF_PIC_ENCODE (DECL); \ ! 2359: } \ ! 2360: while (0) ! 2361: ! 2362: ! 2363: /* Specify the machine mode that this machine uses ! 2364: for the index in the tablejump instruction. */ ! 2365: #define CASE_VECTOR_MODE SImode ! 2366: ! 2367: /* Define this if the tablejump instruction expects the table ! 2368: to contain offsets from the address of the table. ! 2369: Do not define this if the table should contain absolute addresses. */ ! 2370: /* #define CASE_VECTOR_PC_RELATIVE */ ! 2371: ! 2372: /* Specify the tree operation to be used to convert reals to integers. */ ! 2373: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR ! 2374: ! 2375: /* This is the kind of divide that is easiest to do in the general case. */ ! 2376: #define EASY_DIV_EXPR TRUNC_DIV_EXPR ! 2377: ! 2378: /* Define this as 1 if `char' should by default be signed; else as 0. */ ! 2379: #ifndef DEFAULT_SIGNED_CHAR ! 2380: #define DEFAULT_SIGNED_CHAR 1 ! 2381: #endif ! 2382: ! 2383: /* Max number of bytes we can move from memory to memory ! 2384: in one reasonably fast instruction. */ ! 2385: #define MOVE_MAX 4 ! 2386: ! 2387: /* Define this macro as a C expression which is nonzero if ! 2388: accessing less than a word of memory (i.e. a `char' or a ! 2389: `short') is no faster than accessing a word of memory, i.e., if ! 2390: such access require more than one instruction or if there is no ! 2391: difference in cost between byte and (aligned) word loads. ! 2392: ! 2393: On RISC machines, it tends to generate better code to define ! 2394: this as 1, since it avoids making a QI or HI mode register. */ ! 2395: #define SLOW_BYTE_ACCESS 1 ! 2396: ! 2397: /* We assume that the store-condition-codes instructions store 0 for false ! 2398: and some other value for true. This is the value stored for true. */ ! 2399: ! 2400: #define STORE_FLAG_VALUE 1 ! 2401: ! 2402: /* Define this if zero-extension is slow (more than one real instruction). */ ! 2403: #define SLOW_ZERO_EXTEND ! 2404: ! 2405: /* Define if shifts truncate the shift count ! 2406: which implies one can omit a sign-extension or zero-extension ! 2407: of a shift count. ! 2408: ! 2409: Only 5 bits are used in SLLV and SRLV */ ! 2410: ! 2411: #define SHIFT_COUNT_TRUNCATED ! 2412: ! 2413: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits ! 2414: is done just by pretending it is already truncated. */ ! 2415: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 ! 2416: ! 2417: /* Define this macro to control use of the character `$' in ! 2418: identifier names. The value should be 0, 1, or 2. 0 means `$' ! 2419: is not allowed by default; 1 means it is allowed by default if ! 2420: `-traditional' is used; 2 means it is allowed by default provided ! 2421: `-ansi' is not used. 1 is the default; there is no need to ! 2422: define this macro in that case. */ ! 2423: ! 2424: #ifndef DOLLARS_IN_IDENTIFIERS ! 2425: #define DOLLARS_IN_IDENTIFIERS 1 ! 2426: #endif ! 2427: ! 2428: /* Specify the machine mode that pointers have. ! 2429: After generation of rtl, the compiler makes no further distinction ! 2430: between pointers and any other objects of this machine mode. */ ! 2431: #define Pmode SImode ! 2432: ! 2433: /* A function address in a call instruction ! 2434: is a word address (for indexing purposes) ! 2435: so give the MEM rtx a words's mode. */ ! 2436: ! 2437: #define FUNCTION_MODE SImode ! 2438: ! 2439: /* Define TARGET_MEM_FUNCTIONS if we want to use calls to memcpy and ! 2440: memset, instead of the BSD functions bcopy and bzero. */ ! 2441: ! 2442: #if defined(MIPS_SYSV) || defined(OSF_OS) ! 2443: #define TARGET_MEM_FUNCTIONS ! 2444: #endif ! 2445: ! 2446: ! 2447: /* A part of a C `switch' statement that describes the relative ! 2448: costs of constant RTL expressions. It must contain `case' ! 2449: labels for expression codes `const_int', `const', `symbol_ref', ! 2450: `label_ref' and `const_double'. Each case must ultimately reach ! 2451: a `return' statement to return the relative cost of the use of ! 2452: that kind of constant value in an expression. The cost may ! 2453: depend on the precise value of the constant, which is available ! 2454: for examination in X. ! 2455: ! 2456: CODE is the expression code--redundant, since it can be obtained ! 2457: with `GET_CODE (X)'. */ ! 2458: ! 2459: #define CONST_COSTS(X,CODE,OUTER_CODE) \ ! 2460: case CONST_INT: \ ! 2461: /* Always return 0, since we don't have different sized \ ! 2462: instructions, hence different costs according to Richard \ ! 2463: Kenner */ \ ! 2464: return COSTS_N_INSNS (0); \ ! 2465: \ ! 2466: case LABEL_REF: \ ! 2467: return COSTS_N_INSNS (2); \ ! 2468: \ ! 2469: case CONST: \ ! 2470: { \ ! 2471: rtx offset = const0_rtx; \ ! 2472: rtx symref = eliminate_constant_term (X, &offset); \ ! 2473: \ ! 2474: if (GET_CODE (symref) == LABEL_REF) \ ! 2475: return COSTS_N_INSNS (2); \ ! 2476: \ ! 2477: if (GET_CODE (symref) != SYMBOL_REF) \ ! 2478: return COSTS_N_INSNS (4); \ ! 2479: \ ! 2480: /* let's be paranoid.... */ \ ! 2481: if (INTVAL (offset) < -32768 || INTVAL (offset) > 32767) \ ! 2482: return COSTS_N_INSNS (2); \ ! 2483: \ ! 2484: return COSTS_N_INSNS (SYMBOL_REF_FLAG (symref) ? 1 : 2); \ ! 2485: } \ ! 2486: \ ! 2487: case SYMBOL_REF: \ ! 2488: return COSTS_N_INSNS (SYMBOL_REF_FLAG (X) ? 1 : 2); \ ! 2489: \ ! 2490: case CONST_DOUBLE: \ ! 2491: return COSTS_N_INSNS ((CONST_DOUBLE_HIGH (X) == 0 \ ! 2492: && CONST_DOUBLE_LOW (X)) ? 2 : 4); ! 2493: ! 2494: ! 2495: /* Like `CONST_COSTS' but applies to nonconstant RTL expressions. ! 2496: This can be used, for example, to indicate how costly a multiply ! 2497: instruction is. In writing this macro, you can use the construct ! 2498: `COSTS_N_INSNS (N)' to specify a cost equal to N fast instructions. ! 2499: ! 2500: This macro is optional; do not define it if the default cost ! 2501: assumptions are adequate for the target machine. ! 2502: ! 2503: If -mdebugd is used, change the multiply cost to 2, so multiply by ! 2504: a constant isn't converted to a series of shifts. This helps ! 2505: strength reduction, and also makes it easier to identify what the ! 2506: compiler is doing. */ ! 2507: ! 2508: #define RTX_COSTS(X,CODE,OUTER_CODE) \ ! 2509: case MEM: \ ! 2510: { \ ! 2511: int num_words = (GET_MODE_SIZE (GET_MODE (X)) > UNITS_PER_WORD) ? 2 : 1; \ ! 2512: if (simple_memory_operand (X, GET_MODE (X))) \ ! 2513: return COSTS_N_INSNS (num_words); \ ! 2514: \ ! 2515: return COSTS_N_INSNS (2*num_words); \ ! 2516: } \ ! 2517: \ ! 2518: case FFS: \ ! 2519: return COSTS_N_INSNS (6); \ ! 2520: \ ! 2521: case NOT: \ ! 2522: return COSTS_N_INSNS ((GET_MODE (X) == DImode) ? 2 : 1); \ ! 2523: \ ! 2524: case AND: \ ! 2525: case IOR: \ ! 2526: case XOR: \ ! 2527: if (GET_MODE (X) == DImode) \ ! 2528: return COSTS_N_INSNS (2); \ ! 2529: \ ! 2530: if (GET_CODE (XEXP (X, 1)) == CONST_INT) \ ! 2531: { \ ! 2532: rtx number = XEXP (X, 1); \ ! 2533: if (SMALL_INT_UNSIGNED (number)) \ ! 2534: return COSTS_N_INSNS (1); \ ! 2535: \ ! 2536: else if (SMALL_INT (number)) \ ! 2537: return COSTS_N_INSNS (2); \ ! 2538: \ ! 2539: return COSTS_N_INSNS (3); \ ! 2540: } \ ! 2541: \ ! 2542: return COSTS_N_INSNS (1); \ ! 2543: \ ! 2544: case ASHIFT: \ ! 2545: case ASHIFTRT: \ ! 2546: case LSHIFT: \ ! 2547: case LSHIFTRT: \ ! 2548: if (GET_MODE (X) == DImode) \ ! 2549: return COSTS_N_INSNS ((GET_CODE (XEXP (X, 1)) == CONST_INT) ? 12 : 4); \ ! 2550: \ ! 2551: return COSTS_N_INSNS (1); \ ! 2552: \ ! 2553: case ABS: \ ! 2554: { \ ! 2555: enum machine_mode xmode = GET_MODE (X); \ ! 2556: if (xmode == SFmode || xmode == DFmode) \ ! 2557: return COSTS_N_INSNS (1); \ ! 2558: \ ! 2559: return COSTS_N_INSNS (4); \ ! 2560: } \ ! 2561: \ ! 2562: case PLUS: \ ! 2563: case MINUS: \ ! 2564: { \ ! 2565: enum machine_mode xmode = GET_MODE (X); \ ! 2566: if (xmode == SFmode || xmode == DFmode) \ ! 2567: return COSTS_N_INSNS (2); \ ! 2568: \ ! 2569: if (xmode == DImode) \ ! 2570: return COSTS_N_INSNS (4); \ ! 2571: \ ! 2572: return COSTS_N_INSNS (1); \ ! 2573: } \ ! 2574: \ ! 2575: case NEG: \ ! 2576: return COSTS_N_INSNS ((GET_MODE (X) == DImode) ? 4 : 1); \ ! 2577: \ ! 2578: case MULT: \ ! 2579: { \ ! 2580: enum machine_mode xmode = GET_MODE (X); \ ! 2581: if (xmode == SFmode) \ ! 2582: return COSTS_N_INSNS (4); \ ! 2583: \ ! 2584: if (xmode == DFmode) \ ! 2585: return COSTS_N_INSNS (5); \ ! 2586: \ ! 2587: return COSTS_N_INSNS (12); \ ! 2588: } \ ! 2589: \ ! 2590: case DIV: \ ! 2591: case MOD: \ ! 2592: { \ ! 2593: enum machine_mode xmode = GET_MODE (X); \ ! 2594: if (xmode == SFmode) \ ! 2595: return COSTS_N_INSNS (12); \ ! 2596: \ ! 2597: if (xmode == DFmode) \ ! 2598: return COSTS_N_INSNS (19); \ ! 2599: } \ ! 2600: /* fall through */ \ ! 2601: \ ! 2602: case UDIV: \ ! 2603: case UMOD: \ ! 2604: return COSTS_N_INSNS (35); ! 2605: ! 2606: /* An expression giving the cost of an addressing mode that ! 2607: contains ADDRESS. If not defined, the cost is computed from the ! 2608: form of the ADDRESS expression and the `CONST_COSTS' values. ! 2609: ! 2610: For most CISC machines, the default cost is a good approximation ! 2611: of the true cost of the addressing mode. However, on RISC ! 2612: machines, all instructions normally have the same length and ! 2613: execution time. Hence all addresses will have equal costs. ! 2614: ! 2615: In cases where more than one form of an address is known, the ! 2616: form with the lowest cost will be used. If multiple forms have ! 2617: the same, lowest, cost, the one that is the most complex will be ! 2618: used. ! 2619: ! 2620: For example, suppose an address that is equal to the sum of a ! 2621: register and a constant is used twice in the same basic block. ! 2622: When this macro is not defined, the address will be computed in ! 2623: a register and memory references will be indirect through that ! 2624: register. On machines where the cost of the addressing mode ! 2625: containing the sum is no higher than that of a simple indirect ! 2626: reference, this will produce an additional instruction and ! 2627: possibly require an additional register. Proper specification ! 2628: of this macro eliminates this overhead for such machines. ! 2629: ! 2630: Similar use of this macro is made in strength reduction of loops. ! 2631: ! 2632: ADDRESS need not be valid as an address. In such a case, the ! 2633: cost is not relevant and can be any value; invalid addresses ! 2634: need not be assigned a different cost. ! 2635: ! 2636: On machines where an address involving more than one register is ! 2637: as cheap as an address computation involving only one register, ! 2638: defining `ADDRESS_COST' to reflect this can cause two registers ! 2639: to be live over a region of code where only one would have been ! 2640: if `ADDRESS_COST' were not defined in that manner. This effect ! 2641: should be considered in the definition of this macro. ! 2642: Equivalent costs should probably only be given to addresses with ! 2643: different numbers of registers on machines with lots of registers. ! 2644: ! 2645: This macro will normally either not be defined or be defined as ! 2646: a constant. */ ! 2647: ! 2648: #define ADDRESS_COST(ADDR) (REG_P (ADDR) ? 1 : mips_address_cost (ADDR)) ! 2649: ! 2650: /* A C expression for the cost of moving data from a register in ! 2651: class FROM to one in class TO. The classes are expressed using ! 2652: the enumeration values such as `GENERAL_REGS'. A value of 2 is ! 2653: the default; other values are interpreted relative to that. ! 2654: ! 2655: It is not required that the cost always equal 2 when FROM is the ! 2656: same as TO; on some machines it is expensive to move between ! 2657: registers if they are not general registers. ! 2658: ! 2659: If reload sees an insn consisting of a single `set' between two ! 2660: hard registers, and if `REGISTER_MOVE_COST' applied to their ! 2661: classes returns a value of 2, reload does not check to ensure ! 2662: that the constraints of the insn are met. Setting a cost of ! 2663: other than 2 will allow reload to verify that the constraints are ! 2664: met. You should do this if the `movM' pattern's constraints do ! 2665: not allow such copying. */ ! 2666: ! 2667: #define REGISTER_MOVE_COST(FROM, TO) 4 /* force reload to use constraints */ ! 2668: ! 2669: /* A C expression for the cost of a branch instruction. A value of ! 2670: 1 is the default; other values are interpreted relative to that. */ ! 2671: ! 2672: #define BRANCH_COST \ ! 2673: ((mips_cpu == PROCESSOR_R4000 || mips_cpu == PROCESSOR_R6000) ? 2 : 1) ! 2674: ! 2675: ! 2676: /* Used in by the peephole code. */ ! 2677: #define classify_op(op,mode) (mips_rtx_classify[ (int)GET_CODE (op) ]) ! 2678: #define additive_op(op,mode) ((classify_op (op,mode) & CLASS_ADD_OP) != 0) ! 2679: #define divmod_op(op,mode) ((classify_op (op,mode) & CLASS_DIVMOD_OP) != 0) ! 2680: #define unsigned_op(op,mode) ((classify_op (op,mode) & CLASS_UNSIGNED_OP) != 0) ! 2681: ! 2682: #define CLASS_ADD_OP 0x01 /* operator is PLUS/MINUS */ ! 2683: #define CLASS_DIVMOD_OP 0x02 /* operator is {,U}{DIV,MOD} */ ! 2684: #define CLASS_UNSIGNED_OP 0x04 /* operator is U{DIV,MOD} */ ! 2685: #define CLASS_CMP_OP 0x08 /* operator is comparison */ ! 2686: #define CLASS_EQUALITY_OP 0x10 /* operator is == or != */ ! 2687: #define CLASS_FCMP_OP 0x08 /* operator is fp. compare */ ! 2688: ! 2689: #define CLASS_UNS_CMP_OP (CLASS_UNSIGNED_OP | CLASS_CMP_OP) ! 2690: ! 2691: ! 2692: /* Optionally define this if you have added predicates to ! 2693: `MACHINE.c'. This macro is called within an initializer of an ! 2694: array of structures. The first field in the structure is the ! 2695: name of a predicate and the second field is an array of rtl ! 2696: codes. For each predicate, list all rtl codes that can be in ! 2697: expressions matched by the predicate. The list should have a ! 2698: trailing comma. Here is an example of two entries in the list ! 2699: for a typical RISC machine: ! 2700: ! 2701: #define PREDICATE_CODES \ ! 2702: {"gen_reg_rtx_operand", {SUBREG, REG}}, \ ! 2703: {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}}, ! 2704: ! 2705: Defining this macro does not affect the generated code (however, ! 2706: incorrect definitions that omit an rtl code that may be matched ! 2707: by the predicate can cause the compiler to malfunction). ! 2708: Instead, it allows the table built by `genrecog' to be more ! 2709: compact and efficient, thus speeding up the compiler. The most ! 2710: important predicates to include in the list specified by this ! 2711: macro are thoses used in the most insn patterns. */ ! 2712: ! 2713: #define PREDICATE_CODES \ ! 2714: {"uns_arith_operand", { REG, CONST_INT, SUBREG }}, \ ! 2715: {"arith_operand", { REG, CONST_INT, SUBREG }}, \ ! 2716: {"arith32_operand", { REG, CONST_INT, SUBREG }}, \ ! 2717: {"reg_or_0_operand", { REG, CONST_INT, SUBREG }}, \ ! 2718: {"small_int", { CONST_INT }}, \ ! 2719: {"large_int", { CONST_INT }}, \ ! 2720: {"md_register_operand", { REG }}, \ ! 2721: {"mips_const_double_ok", { CONST_DOUBLE }}, \ ! 2722: {"simple_memory_operand", { MEM, SUBREG }}, \ ! 2723: {"equality_op", { EQ, NE }}, \ ! 2724: {"cmp_op", { EQ, NE, GT, GE, GTU, GEU, LT, LE, \ ! 2725: LTU, LEU }}, \ ! 2726: {"cmp2_op", { EQ, NE, GT, GE, GTU, GEU, LT, LE, \ ! 2727: LTU, LEU }}, \ ! 2728: {"fcmp_op", { EQ, NE, GT, GE, LT, LE }}, \ ! 2729: {"uns_cmp_op", { GTU, GEU, LTU, LEU }}, ! 2730: ! 2731: ! 2732: /* If defined, a C statement to be executed just prior to the ! 2733: output of assembler code for INSN, to modify the extracted ! 2734: operands so they will be output differently. ! 2735: ! 2736: Here the argument OPVEC is the vector containing the operands ! 2737: extracted from INSN, and NOPERANDS is the number of elements of ! 2738: the vector which contain meaningful data for this insn. The ! 2739: contents of this vector are what will be used to convert the ! 2740: insn template into assembler code, so you can change the ! 2741: assembler output by changing the contents of the vector. ! 2742: ! 2743: We use it to check if the current insn needs a nop in front of it ! 2744: because of load delays, and also to update the delay slot ! 2745: statistics. */ ! 2746: ! 2747: #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ ! 2748: final_prescan_insn (INSN, OPVEC, NOPERANDS) ! 2749: ! 2750: ! 2751: /* Tell final.c how to eliminate redundant test instructions. ! 2752: Here we define machine-dependent flags and fields in cc_status ! 2753: (see `conditions.h'). */ ! 2754: ! 2755: /* A C compound statement to set the components of `cc_status' ! 2756: appropriately for an insn INSN whose body is EXP. It is this ! 2757: macro's responsibility to recognize insns that set the condition ! 2758: code as a byproduct of other activity as well as those that ! 2759: explicitly set `(cc0)'. ! 2760: ! 2761: This macro is not used on machines that do not use `cc0'. */ ! 2762: ! 2763: #define NOTICE_UPDATE_CC(EXP, INSN) \ ! 2764: do \ ! 2765: { \ ! 2766: enum attr_type type = get_attr_type (INSN); \ ! 2767: if (type == TYPE_ICMP || type == TYPE_FCMP) \ ! 2768: CC_STATUS_INIT; \ ! 2769: } \ ! 2770: while (0) ! 2771: ! 2772: /* A list of names to be used for additional modes for condition code ! 2773: values in registers. These names are added to `enum machine_mode' ! 2774: and all have class `MODE_CC'. By convention, they should start ! 2775: with `CC' and end with `mode'. ! 2776: ! 2777: You should only define this macro if your machine does not use ! 2778: `cc0' and only if additional modes are required. ! 2779: ! 2780: On the MIPS, we use CC_FPmode for all floating point except for not ! 2781: equal, CC_REV_FPmode for not equal (to reverse the sense of the ! 2782: jump), CC_EQmode for integer equality/inequality comparisons, ! 2783: CC_0mode for comparisons against 0, and CCmode for other integer ! 2784: comparisons. */ ! 2785: ! 2786: #define EXTRA_CC_MODES CC_EQmode, CC_FPmode, CC_0mode, CC_REV_FPmode ! 2787: ! 2788: /* A list of C strings giving the names for the modes listed in ! 2789: `EXTRA_CC_MODES'. */ ! 2790: ! 2791: #define EXTRA_CC_NAMES "CC_EQ", "CC_FP", "CC_0", "CC_REV_FP" ! 2792: ! 2793: /* Returns a mode from class `MODE_CC' to be used when comparison ! 2794: operation code OP is applied to rtx X. */ ! 2795: ! 2796: #define SELECT_CC_MODE(OP, X, Y) \ ! 2797: (GET_MODE_CLASS (GET_MODE (X)) != MODE_FLOAT \ ! 2798: ? SImode \ ! 2799: : ((OP == NE) ? CC_REV_FPmode : CC_FPmode)) ! 2800: ! 2801: ! 2802: /* Control the assembler format that we output. */ ! 2803: ! 2804: /* Output at beginning of assembler file. ! 2805: If we are optimizing to use the global pointer, create a temporary ! 2806: file to hold all of the text stuff, and write it out to the end. ! 2807: This is needed because the MIPS assembler is evidently one pass, ! 2808: and if it hasn't seen the relevant .comm/.lcomm/.extern/.sdata ! 2809: declaration when the code is processed, it generates a two ! 2810: instruction sequence. */ ! 2811: ! 2812: #define ASM_FILE_START(STREAM) mips_asm_file_start (STREAM) ! 2813: ! 2814: /* Output to assembler file text saying following lines ! 2815: may contain character constants, extra white space, comments, etc. */ ! 2816: ! 2817: #define ASM_APP_ON " #APP\n" ! 2818: ! 2819: /* Output to assembler file text saying following lines ! 2820: no longer contain unusual constructs. */ ! 2821: ! 2822: #define ASM_APP_OFF " #NO_APP\n" ! 2823: ! 2824: /* How to refer to registers in assembler output. ! 2825: This sequence is indexed by compiler's hard-register-number (see above). ! 2826: ! 2827: In order to support the two different conventions for register names, ! 2828: we use the name of a table set up in mips.c, which is overwritten ! 2829: if -mrnames is used. */ ! 2830: ! 2831: #define REGISTER_NAMES \ ! 2832: { \ ! 2833: &mips_reg_names[ 0][0], \ ! 2834: &mips_reg_names[ 1][0], \ ! 2835: &mips_reg_names[ 2][0], \ ! 2836: &mips_reg_names[ 3][0], \ ! 2837: &mips_reg_names[ 4][0], \ ! 2838: &mips_reg_names[ 5][0], \ ! 2839: &mips_reg_names[ 6][0], \ ! 2840: &mips_reg_names[ 7][0], \ ! 2841: &mips_reg_names[ 8][0], \ ! 2842: &mips_reg_names[ 9][0], \ ! 2843: &mips_reg_names[10][0], \ ! 2844: &mips_reg_names[11][0], \ ! 2845: &mips_reg_names[12][0], \ ! 2846: &mips_reg_names[13][0], \ ! 2847: &mips_reg_names[14][0], \ ! 2848: &mips_reg_names[15][0], \ ! 2849: &mips_reg_names[16][0], \ ! 2850: &mips_reg_names[17][0], \ ! 2851: &mips_reg_names[18][0], \ ! 2852: &mips_reg_names[19][0], \ ! 2853: &mips_reg_names[20][0], \ ! 2854: &mips_reg_names[21][0], \ ! 2855: &mips_reg_names[22][0], \ ! 2856: &mips_reg_names[23][0], \ ! 2857: &mips_reg_names[24][0], \ ! 2858: &mips_reg_names[25][0], \ ! 2859: &mips_reg_names[26][0], \ ! 2860: &mips_reg_names[27][0], \ ! 2861: &mips_reg_names[28][0], \ ! 2862: &mips_reg_names[29][0], \ ! 2863: &mips_reg_names[30][0], \ ! 2864: &mips_reg_names[31][0], \ ! 2865: &mips_reg_names[32][0], \ ! 2866: &mips_reg_names[33][0], \ ! 2867: &mips_reg_names[34][0], \ ! 2868: &mips_reg_names[35][0], \ ! 2869: &mips_reg_names[36][0], \ ! 2870: &mips_reg_names[37][0], \ ! 2871: &mips_reg_names[38][0], \ ! 2872: &mips_reg_names[39][0], \ ! 2873: &mips_reg_names[40][0], \ ! 2874: &mips_reg_names[41][0], \ ! 2875: &mips_reg_names[42][0], \ ! 2876: &mips_reg_names[43][0], \ ! 2877: &mips_reg_names[44][0], \ ! 2878: &mips_reg_names[45][0], \ ! 2879: &mips_reg_names[46][0], \ ! 2880: &mips_reg_names[47][0], \ ! 2881: &mips_reg_names[48][0], \ ! 2882: &mips_reg_names[49][0], \ ! 2883: &mips_reg_names[50][0], \ ! 2884: &mips_reg_names[51][0], \ ! 2885: &mips_reg_names[52][0], \ ! 2886: &mips_reg_names[53][0], \ ! 2887: &mips_reg_names[54][0], \ ! 2888: &mips_reg_names[55][0], \ ! 2889: &mips_reg_names[56][0], \ ! 2890: &mips_reg_names[57][0], \ ! 2891: &mips_reg_names[58][0], \ ! 2892: &mips_reg_names[59][0], \ ! 2893: &mips_reg_names[60][0], \ ! 2894: &mips_reg_names[61][0], \ ! 2895: &mips_reg_names[62][0], \ ! 2896: &mips_reg_names[63][0], \ ! 2897: &mips_reg_names[64][0], \ ! 2898: &mips_reg_names[65][0], \ ! 2899: &mips_reg_names[66][0], \ ! 2900: } ! 2901: ! 2902: /* print-rtl.c can't use REGISTER_NAMES, since it depends on mips.c. ! 2903: So define this for it. */ ! 2904: #define DEBUG_REGISTER_NAMES \ ! 2905: { \ ! 2906: "$0", "at", "v0", "v1", "a0", "a1", "a2", "a3", \ ! 2907: "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7", \ ! 2908: "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7", \ ! 2909: "t8", "t9", "k0", "k1", "gp", "sp", "$fp", "ra", \ ! 2910: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", \ ! 2911: "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \ ! 2912: "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23", \ ! 2913: "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "$f31", \ ! 2914: "hi", "lo", "$fcr31" \ ! 2915: } ! 2916: ! 2917: /* If defined, a C initializer for an array of structures ! 2918: containing a name and a register number. This macro defines ! 2919: additional names for hard registers, thus allowing the `asm' ! 2920: option in declarations to refer to registers using alternate ! 2921: names. ! 2922: ! 2923: We define both names for the integer registers here. */ ! 2924: ! 2925: #define ADDITIONAL_REGISTER_NAMES \ ! 2926: { \ ! 2927: { "$0", 0 + GP_REG_FIRST }, \ ! 2928: { "$1", 1 + GP_REG_FIRST }, \ ! 2929: { "$2", 2 + GP_REG_FIRST }, \ ! 2930: { "$3", 3 + GP_REG_FIRST }, \ ! 2931: { "$4", 4 + GP_REG_FIRST }, \ ! 2932: { "$5", 5 + GP_REG_FIRST }, \ ! 2933: { "$6", 6 + GP_REG_FIRST }, \ ! 2934: { "$7", 7 + GP_REG_FIRST }, \ ! 2935: { "$8", 8 + GP_REG_FIRST }, \ ! 2936: { "$9", 9 + GP_REG_FIRST }, \ ! 2937: { "$10", 10 + GP_REG_FIRST }, \ ! 2938: { "$11", 11 + GP_REG_FIRST }, \ ! 2939: { "$12", 12 + GP_REG_FIRST }, \ ! 2940: { "$13", 13 + GP_REG_FIRST }, \ ! 2941: { "$14", 14 + GP_REG_FIRST }, \ ! 2942: { "$15", 15 + GP_REG_FIRST }, \ ! 2943: { "$16", 16 + GP_REG_FIRST }, \ ! 2944: { "$17", 17 + GP_REG_FIRST }, \ ! 2945: { "$18", 18 + GP_REG_FIRST }, \ ! 2946: { "$19", 19 + GP_REG_FIRST }, \ ! 2947: { "$20", 20 + GP_REG_FIRST }, \ ! 2948: { "$21", 21 + GP_REG_FIRST }, \ ! 2949: { "$22", 22 + GP_REG_FIRST }, \ ! 2950: { "$23", 23 + GP_REG_FIRST }, \ ! 2951: { "$24", 24 + GP_REG_FIRST }, \ ! 2952: { "$25", 25 + GP_REG_FIRST }, \ ! 2953: { "$26", 26 + GP_REG_FIRST }, \ ! 2954: { "$27", 27 + GP_REG_FIRST }, \ ! 2955: { "$28", 28 + GP_REG_FIRST }, \ ! 2956: { "$29", 29 + GP_REG_FIRST }, \ ! 2957: { "$30", 30 + GP_REG_FIRST }, \ ! 2958: { "$31", 31 + GP_REG_FIRST }, \ ! 2959: { "$sp", 29 + GP_REG_FIRST }, \ ! 2960: { "$fp", 30 + GP_REG_FIRST }, \ ! 2961: { "at", 1 + GP_REG_FIRST }, \ ! 2962: { "v0", 2 + GP_REG_FIRST }, \ ! 2963: { "v1", 3 + GP_REG_FIRST }, \ ! 2964: { "a0", 4 + GP_REG_FIRST }, \ ! 2965: { "a1", 5 + GP_REG_FIRST }, \ ! 2966: { "a2", 6 + GP_REG_FIRST }, \ ! 2967: { "a3", 7 + GP_REG_FIRST }, \ ! 2968: { "t0", 8 + GP_REG_FIRST }, \ ! 2969: { "t1", 9 + GP_REG_FIRST }, \ ! 2970: { "t2", 10 + GP_REG_FIRST }, \ ! 2971: { "t3", 11 + GP_REG_FIRST }, \ ! 2972: { "t4", 12 + GP_REG_FIRST }, \ ! 2973: { "t5", 13 + GP_REG_FIRST }, \ ! 2974: { "t6", 14 + GP_REG_FIRST }, \ ! 2975: { "t7", 15 + GP_REG_FIRST }, \ ! 2976: { "s0", 16 + GP_REG_FIRST }, \ ! 2977: { "s1", 17 + GP_REG_FIRST }, \ ! 2978: { "s2", 18 + GP_REG_FIRST }, \ ! 2979: { "s3", 19 + GP_REG_FIRST }, \ ! 2980: { "s4", 20 + GP_REG_FIRST }, \ ! 2981: { "s5", 21 + GP_REG_FIRST }, \ ! 2982: { "s6", 22 + GP_REG_FIRST }, \ ! 2983: { "s7", 23 + GP_REG_FIRST }, \ ! 2984: { "t8", 24 + GP_REG_FIRST }, \ ! 2985: { "t9", 25 + GP_REG_FIRST }, \ ! 2986: { "k0", 26 + GP_REG_FIRST }, \ ! 2987: { "k1", 27 + GP_REG_FIRST }, \ ! 2988: { "gp", 28 + GP_REG_FIRST }, \ ! 2989: { "sp", 29 + GP_REG_FIRST }, \ ! 2990: { "fp", 30 + GP_REG_FIRST }, \ ! 2991: { "ra", 31 + GP_REG_FIRST }, \ ! 2992: { "$sp", 29 + GP_REG_FIRST }, \ ! 2993: { "$fp", 30 + GP_REG_FIRST }, \ ! 2994: { "cc", FPSW_REGNUM }, \ ! 2995: } ! 2996: ! 2997: /* Define results of standard character escape sequences. */ ! 2998: #define TARGET_BELL 007 ! 2999: #define TARGET_BS 010 ! 3000: #define TARGET_TAB 011 ! 3001: #define TARGET_NEWLINE 012 ! 3002: #define TARGET_VT 013 ! 3003: #define TARGET_FF 014 ! 3004: #define TARGET_CR 015 ! 3005: ! 3006: /* A C compound statement to output to stdio stream STREAM the ! 3007: assembler syntax for an instruction operand X. X is an RTL ! 3008: expression. ! 3009: ! 3010: CODE is a value that can be used to specify one of several ways ! 3011: of printing the operand. It is used when identical operands ! 3012: must be printed differently depending on the context. CODE ! 3013: comes from the `%' specification that was used to request ! 3014: printing of the operand. If the specification was just `%DIGIT' ! 3015: then CODE is 0; if the specification was `%LTR DIGIT' then CODE ! 3016: is the ASCII code for LTR. ! 3017: ! 3018: If X is a register, this macro should print the register's name. ! 3019: The names can be found in an array `reg_names' whose type is ! 3020: `char *[]'. `reg_names' is initialized from `REGISTER_NAMES'. ! 3021: ! 3022: When the machine description has a specification `%PUNCT' (a `%' ! 3023: followed by a punctuation character), this macro is called with ! 3024: a null pointer for X and the punctuation character for CODE. ! 3025: ! 3026: See mips.c for the MIPS specific codes. */ ! 3027: ! 3028: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) ! 3029: ! 3030: /* A C expression which evaluates to true if CODE is a valid ! 3031: punctuation character for use in the `PRINT_OPERAND' macro. If ! 3032: `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no ! 3033: punctuation characters (except for the standard one, `%') are ! 3034: used in this way. */ ! 3035: ! 3036: #define PRINT_OPERAND_PUNCT_VALID_P(CODE) mips_print_operand_punct[CODE] ! 3037: ! 3038: /* A C compound statement to output to stdio stream STREAM the ! 3039: assembler syntax for an instruction operand that is a memory ! 3040: reference whose address is ADDR. ADDR is an RTL expression. ! 3041: ! 3042: On some machines, the syntax for a symbolic address depends on ! 3043: the section that the address refers to. On these machines, ! 3044: define the macro `ENCODE_SECTION_INFO' to store the information ! 3045: into the `symbol_ref', and then check for it here. */ ! 3046: ! 3047: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) ! 3048: ! 3049: ! 3050: /* A C statement, to be executed after all slot-filler instructions ! 3051: have been output. If necessary, call `dbr_sequence_length' to ! 3052: determine the number of slots filled in a sequence (zero if not ! 3053: currently outputting a sequence), to decide how many no-ops to ! 3054: output, or whatever. ! 3055: ! 3056: Don't define this macro if it has nothing to do, but it is ! 3057: helpful in reading assembly output if the extent of the delay ! 3058: sequence is made explicit (e.g. with white space). ! 3059: ! 3060: Note that output routines for instructions with delay slots must ! 3061: be prepared to deal with not being output as part of a sequence ! 3062: (i.e. when the scheduling pass is not run, or when no slot ! 3063: fillers could be found.) The variable `final_sequence' is null ! 3064: when not processing a sequence, otherwise it contains the ! 3065: `sequence' rtx being output. */ ! 3066: ! 3067: #define DBR_OUTPUT_SEQEND(STREAM) \ ! 3068: do \ ! 3069: { \ ! 3070: if (set_nomacro > 0 && --set_nomacro == 0) \ ! 3071: fputs ("\t.set\tmacro\n", STREAM); \ ! 3072: \ ! 3073: if (set_noreorder > 0 && --set_noreorder == 0) \ ! 3074: fputs ("\t.set\treorder\n", STREAM); \ ! 3075: \ ! 3076: dslots_jump_filled++; \ ! 3077: fputs ("\n", STREAM); \ ! 3078: } \ ! 3079: while (0) ! 3080: ! 3081: ! 3082: /* How to tell the debugger about changes of source files. Note, the ! 3083: mips ECOFF format cannot deal with changes of files inside of ! 3084: functions, which means the output of parser generators like bison ! 3085: is generally not debuggable without using the -l switch. Lose, ! 3086: lose, lose. Silicon graphics seems to want all .file's hardwired ! 3087: to 1. */ ! 3088: ! 3089: #ifndef SET_FILE_NUMBER ! 3090: #define SET_FILE_NUMBER() ++num_source_filenames ! 3091: #endif ! 3092: ! 3093: #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \ ! 3094: mips_output_filename (STREAM, NAME) ! 3095: ! 3096: /* This is how to output a note the debugger telling it the line number ! 3097: to which the following sequence of instructions corresponds. ! 3098: Silicon graphics puts a label after each .loc. */ ! 3099: ! 3100: #ifndef LABEL_AFTER_LOC ! 3101: #define LABEL_AFTER_LOC(STREAM) ! 3102: #endif ! 3103: ! 3104: #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) \ ! 3105: mips_output_lineno (STREAM, LINE) ! 3106: ! 3107: /* The MIPS implementation uses some labels for it's own purposed. The ! 3108: following lists what labels are created, and are all formed by the ! 3109: pattern $L[a-z].*. The machine independent portion of GCC creates ! 3110: labels matching: $L[A-Z][0-9]+ and $L[0-9]+. ! 3111: ! 3112: LM[0-9]+ Silicon Graphics/ECOFF stabs label before each stmt. ! 3113: $Lb[0-9]+ Begin blocks for MIPS debug support ! 3114: $Lc[0-9]+ Label for use in s<xx> operation. ! 3115: $Le[0-9]+ End blocks for MIPS debug support ! 3116: $Lp\..+ Half-pic labels. */ ! 3117: ! 3118: /* This is how to output the definition of a user-level label named NAME, ! 3119: such as the label on a static function or variable NAME. ! 3120: ! 3121: If we are optimizing the gp, remember that this label has been put ! 3122: out, so we know not to emit an .extern for it in mips_asm_file_end. ! 3123: We use one of the common bits in the IDENTIFIER tree node for this, ! 3124: since those bits seem to be unused, and we don't have any method ! 3125: of getting the decl nodes from the name. */ ! 3126: ! 3127: #define ASM_OUTPUT_LABEL(STREAM,NAME) \ ! 3128: do { \ ! 3129: assemble_name (STREAM, NAME); \ ! 3130: fputs (":\n", STREAM); \ ! 3131: } while (0) ! 3132: ! 3133: ! 3134: /* A C statement (sans semicolon) to output to the stdio stream ! 3135: STREAM any text necessary for declaring the name NAME of an ! 3136: initialized variable which is being defined. This macro must ! 3137: output the label definition (perhaps using `ASM_OUTPUT_LABEL'). ! 3138: The argument DECL is the `VAR_DECL' tree node representing the ! 3139: variable. ! 3140: ! 3141: If this macro is not defined, then the variable name is defined ! 3142: in the usual manner as a label (by means of `ASM_OUTPUT_LABEL'). */ ! 3143: ! 3144: #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) \ ! 3145: do \ ! 3146: { \ ! 3147: mips_declare_object (STREAM, NAME, "", ":\n", 0); \ ! 3148: HALF_PIC_DECLARE (NAME); \ ! 3149: } \ ! 3150: while (0) ! 3151: ! 3152: ! 3153: /* This is how to output a command to make the user-level label named NAME ! 3154: defined for reference from other files. */ ! 3155: ! 3156: #define ASM_GLOBALIZE_LABEL(STREAM,NAME) \ ! 3157: do { \ ! 3158: fputs ("\t.globl\t", STREAM); \ ! 3159: assemble_name (STREAM, NAME); \ ! 3160: fputs ("\n", STREAM); \ ! 3161: } while (0) ! 3162: ! 3163: /* This says how to define a global common symbol. */ ! 3164: ! 3165: #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \ ! 3166: mips_declare_object (STREAM, NAME, "\n\t.comm\t", ",%u\n", (ROUNDED)) ! 3167: ! 3168: /* This says how to define a local common symbol (ie, not visible to ! 3169: linker). */ ! 3170: ! 3171: #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \ ! 3172: mips_declare_object (STREAM, NAME, "\n\t.lcomm\t", ",%u\n", (ROUNDED)) ! 3173: ! 3174: ! 3175: /* This says how to output an external. It would be possible not to ! 3176: output anything and let undefined symbol become external. However ! 3177: the assembler uses length information on externals to allocate in ! 3178: data/sdata bss/sbss, thereby saving exec time. */ ! 3179: ! 3180: #define ASM_OUTPUT_EXTERNAL(STREAM,DECL,NAME) \ ! 3181: mips_output_external(STREAM,DECL,NAME) ! 3182: ! 3183: /* This says what to print at the end of the assembly file */ ! 3184: #define ASM_FILE_END(STREAM) mips_asm_file_end(STREAM) ! 3185: ! 3186: ! 3187: /* This is how to declare a function name. The actual work of ! 3188: emitting the label is moved to function_prologue, so that we can ! 3189: get the line number correctly emitted before the .ent directive, ! 3190: and after any .file directives. ! 3191: ! 3192: Also, switch files if we are optimizing the global pointer. */ ! 3193: ! 3194: #define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \ ! 3195: { \ ! 3196: extern FILE *asm_out_text_file; \ ! 3197: if (TARGET_GP_OPT) \ ! 3198: STREAM = asm_out_text_file; \ ! 3199: \ ! 3200: current_function_name = NAME; \ ! 3201: HALF_PIC_DECLARE (NAME); \ ! 3202: } ! 3203: ! 3204: /* This is how to output a reference to a user-level label named NAME. ! 3205: `assemble_name' uses this. */ ! 3206: ! 3207: #define ASM_OUTPUT_LABELREF(STREAM,NAME) fprintf (STREAM, "%s", NAME) ! 3208: ! 3209: /* This is how to output an internal numbered label where ! 3210: PREFIX is the class of label and NUM is the number within the class. */ ! 3211: ! 3212: #define ASM_OUTPUT_INTERNAL_LABEL(STREAM,PREFIX,NUM) \ ! 3213: fprintf (STREAM, "$%s%d:\n", PREFIX, NUM) ! 3214: ! 3215: /* This is how to store into the string LABEL ! 3216: the symbol_ref name of an internal numbered label where ! 3217: PREFIX is the class of label and NUM is the number within the class. ! 3218: This is suitable for output with `assemble_name'. */ ! 3219: ! 3220: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ ! 3221: sprintf (LABEL, "*$%s%d", PREFIX, NUM) ! 3222: ! 3223: /* This is how to output an assembler line defining a `double' constant. */ ! 3224: ! 3225: #define ASM_OUTPUT_DOUBLE(STREAM,VALUE) \ ! 3226: mips_output_double (STREAM, VALUE) ! 3227: ! 3228: ! 3229: /* This is how to output an assembler line defining a `float' constant. */ ! 3230: ! 3231: #define ASM_OUTPUT_FLOAT(STREAM,VALUE) \ ! 3232: mips_output_float (STREAM, VALUE) ! 3233: ! 3234: ! 3235: /* This is how to output an assembler line defining an `int' constant. */ ! 3236: ! 3237: #define ASM_OUTPUT_INT(STREAM,VALUE) \ ! 3238: do { \ ! 3239: fprintf (STREAM, "\t.word\t"); \ ! 3240: output_addr_const (STREAM, (VALUE)); \ ! 3241: fprintf (STREAM, "\n"); \ ! 3242: } while (0) ! 3243: ! 3244: /* Likewise for `char' and `short' constants. */ ! 3245: ! 3246: #define ASM_OUTPUT_SHORT(STREAM,VALUE) \ ! 3247: { \ ! 3248: fprintf (STREAM, "\t.half\t"); \ ! 3249: output_addr_const (STREAM, (VALUE)); \ ! 3250: fprintf (STREAM, "\n"); \ ! 3251: } ! 3252: ! 3253: #define ASM_OUTPUT_CHAR(STREAM,VALUE) \ ! 3254: { \ ! 3255: fprintf (STREAM, "\t.byte\t"); \ ! 3256: output_addr_const (STREAM, (VALUE)); \ ! 3257: fprintf (STREAM, "\n"); \ ! 3258: } ! 3259: ! 3260: /* This is how to output an assembler line for a numeric constant byte. */ ! 3261: ! 3262: #define ASM_OUTPUT_BYTE(STREAM,VALUE) \ ! 3263: fprintf (STREAM, "\t.byte\t0x%x\n", (VALUE)) ! 3264: ! 3265: /* This is how to output an element of a case-vector that is absolute. */ ! 3266: ! 3267: #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ ! 3268: fprintf (STREAM, "\t.word\t$L%d\n", VALUE) ! 3269: ! 3270: /* This is how to output an element of a case-vector that is relative. ! 3271: (We do not use such vectors, ! 3272: but we must define this macro anyway.) */ ! 3273: ! 3274: #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, VALUE, REL) \ ! 3275: fprintf (STREAM, "\t.word\t$L%d-$L%d\n", VALUE, REL) ! 3276: ! 3277: /* This is how to emit the initial label for switch statements. We ! 3278: need to put the switch labels somewhere else from the text section, ! 3279: because the MIPS assembler gets real confused about line numbers if ! 3280: .word's appear in the text section. */ ! 3281: ! 3282: #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, JUMPTABLE) \ ! 3283: { \ ! 3284: rdata_section (); \ ! 3285: ASM_OUTPUT_ALIGN (STREAM, 2); \ ! 3286: ASM_OUTPUT_INTERNAL_LABEL (STREAM, PREFIX, NUM); \ ! 3287: } ! 3288: ! 3289: /* This is how to output an assembler line ! 3290: that says to advance the location counter ! 3291: to a multiple of 2**LOG bytes. */ ! 3292: ! 3293: #define ASM_OUTPUT_ALIGN(STREAM,LOG) \ ! 3294: { \ ! 3295: int mask = (1 << (LOG)) - 1; \ ! 3296: fprintf (STREAM, "\t.align\t%d\n", (LOG)); \ ! 3297: } ! 3298: ! 3299: /* This is how to output an assembler line to to advance the location ! 3300: counter by SIZE bytes. */ ! 3301: ! 3302: #define ASM_OUTPUT_SKIP(STREAM,SIZE) \ ! 3303: fprintf (STREAM, "\t.space\t%u\n", (SIZE)) ! 3304: ! 3305: ! 3306: /* This is how to output a string. */ ! 3307: #define ASM_OUTPUT_ASCII(STREAM, STRING, LEN) \ ! 3308: do { \ ! 3309: register int i, c, len = (LEN), cur_pos = 17; \ ! 3310: register unsigned char *string = (unsigned char *)(STRING); \ ! 3311: fprintf ((STREAM), "\t.ascii\t\""); \ ! 3312: for (i = 0; i < len; i++) \ ! 3313: { \ ! 3314: register int c = string[i]; \ ! 3315: \ ! 3316: switch (c) \ ! 3317: { \ ! 3318: case '\"': \ ! 3319: case '\\': \ ! 3320: putc ('\\', (STREAM)); \ ! 3321: putc (c, (STREAM)); \ ! 3322: cur_pos += 2; \ ! 3323: break; \ ! 3324: \ ! 3325: case TARGET_NEWLINE: \ ! 3326: fputs ("\\n", (STREAM)); \ ! 3327: if (i+1 < len \ ! 3328: && (((c = string[i+1]) >= '\040' && c <= '~') \ ! 3329: || c == TARGET_TAB)) \ ! 3330: cur_pos = 32767; /* break right here */ \ ! 3331: else \ ! 3332: cur_pos += 2; \ ! 3333: break; \ ! 3334: \ ! 3335: case TARGET_TAB: \ ! 3336: fputs ("\\t", (STREAM)); \ ! 3337: cur_pos += 2; \ ! 3338: break; \ ! 3339: \ ! 3340: case TARGET_FF: \ ! 3341: fputs ("\\f", (STREAM)); \ ! 3342: cur_pos += 2; \ ! 3343: break; \ ! 3344: \ ! 3345: case TARGET_BS: \ ! 3346: fputs ("\\b", (STREAM)); \ ! 3347: cur_pos += 2; \ ! 3348: break; \ ! 3349: \ ! 3350: case TARGET_CR: \ ! 3351: fputs ("\\r", (STREAM)); \ ! 3352: cur_pos += 2; \ ! 3353: break; \ ! 3354: \ ! 3355: default: \ ! 3356: if (c >= ' ' && c < 0177) \ ! 3357: { \ ! 3358: putc (c, (STREAM)); \ ! 3359: cur_pos++; \ ! 3360: } \ ! 3361: else \ ! 3362: { \ ! 3363: fprintf ((STREAM), "\\%03o", c); \ ! 3364: cur_pos += 4; \ ! 3365: } \ ! 3366: } \ ! 3367: \ ! 3368: if (cur_pos > 72 && i+1 < len) \ ! 3369: { \ ! 3370: cur_pos = 17; \ ! 3371: fprintf ((STREAM), "\"\n\t.ascii\t\""); \ ! 3372: } \ ! 3373: } \ ! 3374: fprintf ((STREAM), "\"\n"); \ ! 3375: } while (0) ! 3376: ! 3377: /* Handle certain cpp directives used in header files on sysV. */ ! 3378: #define SCCS_DIRECTIVE ! 3379: ! 3380: /* Output #ident as a in the read-only data section. */ ! 3381: #define ASM_OUTPUT_IDENT(FILE, STRING) \ ! 3382: { \ ! 3383: char *p = STRING; \ ! 3384: int size = strlen (p) + 1; \ ! 3385: rdata_section (); \ ! 3386: assemble_string (p, size); \ ! 3387: } ! 3388: ! 3389: /* Default to -G 8 */ ! 3390: #ifndef MIPS_DEFAULT_GVALUE ! 3391: #define MIPS_DEFAULT_GVALUE 8 ! 3392: #endif ! 3393: ! 3394: /* Define the strings to put out for each section in the object file. */ ! 3395: #define TEXT_SECTION_ASM_OP "\t.text" /* instructions */ ! 3396: #define DATA_SECTION_ASM_OP "\t.data" /* large data */ ! 3397: #define SDATA_SECTION_ASM_OP "\t.sdata" /* small data */ ! 3398: #define RDATA_SECTION_ASM_OP "\t.rdata" /* read-only data */ ! 3399: #define READONLY_DATA_SECTION rdata_section ! 3400: ! 3401: /* What other sections we support other than the normal .data/.text. */ ! 3402: ! 3403: #define EXTRA_SECTIONS in_sdata, in_rdata, in_last_p1 ! 3404: ! 3405: /* Define the additional functions to select our additional sections. */ ! 3406: ! 3407: /* on the MIPS it is not a good idea to put constants in the text ! 3408: section, since this defeats the sdata/data mechanism. This is ! 3409: especially true when -O is used. In this case an effort is made to ! 3410: address with faster (gp) register relative addressing, which can ! 3411: only get at sdata and sbss items (there is no stext !!) However, ! 3412: if the constant is too large for sdata, and it's readonly, it ! 3413: will go into the .rdata section. */ ! 3414: ! 3415: #define EXTRA_SECTION_FUNCTIONS \ ! 3416: void \ ! 3417: sdata_section () \ ! 3418: { \ ! 3419: if (in_section != in_sdata) \ ! 3420: { \ ! 3421: fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ ! 3422: in_section = in_sdata; \ ! 3423: } \ ! 3424: } \ ! 3425: \ ! 3426: void \ ! 3427: rdata_section () \ ! 3428: { \ ! 3429: if (in_section != in_rdata) \ ! 3430: { \ ! 3431: fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP); \ ! 3432: in_section = in_rdata; \ ! 3433: } \ ! 3434: } ! 3435: ! 3436: /* Given a decl node or constant node, choose the section to output it in ! 3437: and select that section. */ ! 3438: ! 3439: #define SELECT_RTX_SECTION(MODE,RTX) \ ! 3440: { \ ! 3441: if ((GET_MODE_SIZE(MODE) / BITS_PER_UNIT) <= mips_section_threshold \ ! 3442: && mips_section_threshold > 0) \ ! 3443: sdata_section (); \ ! 3444: else \ ! 3445: rdata_section (); \ ! 3446: } \ ! 3447: ! 3448: #define SELECT_SECTION(DECL, RELOC) \ ! 3449: { \ ! 3450: if (int_size_in_bytes (TREE_TYPE (DECL)) <= mips_section_threshold \ ! 3451: && mips_section_threshold > 0) \ ! 3452: sdata_section (); \ ! 3453: \ ! 3454: else if (RELOC) \ ! 3455: data_section (); \ ! 3456: \ ! 3457: else if (TREE_CODE (DECL) == STRING_CST) \ ! 3458: { \ ! 3459: if (flag_writable_strings) \ ! 3460: data_section (); \ ! 3461: else \ ! 3462: rdata_section (); \ ! 3463: } \ ! 3464: \ ! 3465: else if (TREE_CODE (DECL) != VAR_DECL) \ ! 3466: rdata_section (); \ ! 3467: \ ! 3468: else if (!TREE_READONLY (DECL)) \ ! 3469: data_section (); \ ! 3470: \ ! 3471: else \ ! 3472: rdata_section (); \ ! 3473: } ! 3474: ! 3475: ! 3476: /* Store in OUTPUT a string (made with alloca) containing ! 3477: an assembler-name for a local static variable named NAME. ! 3478: LABELNO is an integer which is different for each call. */ ! 3479: ! 3480: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ ! 3481: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ ! 3482: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) ! 3483: ! 3484: #define ASM_OUTPUT_REG_PUSH(STREAM,REGNO) \ ! 3485: do \ ! 3486: { \ ! 3487: fprintf (STREAM, "\tsubu\t%s,%s,8\n\tsw\t%s,0(%s)\n", \ ! 3488: reg_names[STACK_POINTER_REGNUM], \ ! 3489: reg_names[STACK_POINTER_REGNUM], \ ! 3490: reg_names[REGNO], \ ! 3491: reg_names[STACK_POINTER_REGNUM]); \ ! 3492: } \ ! 3493: while (0) ! 3494: ! 3495: #define ASM_OUTPUT_REG_POP(STREAM,REGNO) \ ! 3496: do \ ! 3497: { \ ! 3498: if (! set_noreorder) \ ! 3499: fprintf (STREAM, "\t.set\tnoreorder\n"); \ ! 3500: \ ! 3501: dslots_load_total++; \ ! 3502: dslots_load_filled++; \ ! 3503: fprintf (STREAM, "\tlw\t%s,0(%s)\n\taddu\t%s,%s,8\n", \ ! 3504: reg_names[REGNO], \ ! 3505: reg_names[STACK_POINTER_REGNUM], \ ! 3506: reg_names[STACK_POINTER_REGNUM], \ ! 3507: reg_names[STACK_POINTER_REGNUM]); \ ! 3508: \ ! 3509: if (! set_noreorder) \ ! 3510: fprintf (STREAM, "\t.set\treorder\n"); \ ! 3511: } \ ! 3512: while (0) ! 3513: ! 3514: /* Define the parentheses used to group arithmetic operations ! 3515: in assembler code. */ ! 3516: ! 3517: #define ASM_OPEN_PAREN "(" ! 3518: #define ASM_CLOSE_PAREN ")" ! 3519: ! 3520: /* How to start an assembler comment. */ ! 3521: #ifndef ASM_COMMENT_START ! 3522: #define ASM_COMMENT_START "\t\t# " ! 3523: #endif ! 3524: ! 3525: ! 3526: ! 3527: /* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for ! 3528: and mips-tdump.c to print them out. ! 3529: ! 3530: These must match the corresponding definitions in gdb/mipsread.c. ! 3531: Unfortunately, gcc and gdb do not currently share any directories. */ ! 3532: ! 3533: #define CODE_MASK 0x8F300 ! 3534: #define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK) ! 3535: #define MIPS_MARK_STAB(code) ((code)+CODE_MASK) ! 3536: #define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK) ! 3537: ! 3538: ! 3539: /* Default definitions for size_t and ptrdiff_t. */ ! 3540: ! 3541: #ifndef SIZE_TYPE ! 3542: #define SIZE_TYPE "unsigned int" ! 3543: #endif ! 3544: ! 3545: #ifndef PTRDIFF_TYPE ! 3546: #define PTRDIFF_TYPE "int" ! 3547: #endif ! 3548:
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