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1.1 ! root 1: /* Definitions of target machine for GNU compiler. ! 2: Motorola m88100 in an 88open OCS/BCS environment. ! 3: Copyright (C) 1988, 1989, 1990, 1991, 1993 Free Software Foundation, Inc. ! 4: Contributed by Michael Tiemann ([email protected]) ! 5: Enhanced by Michael Meissner ([email protected]) ! 6: Version 2 port by Tom Wood ([email protected]) ! 7: ! 8: This file is part of GNU CC. ! 9: ! 10: GNU CC is free software; you can redistribute it and/or modify ! 11: it under the terms of the GNU General Public License as published by ! 12: the Free Software Foundation; either version 2, or (at your option) ! 13: any later version. ! 14: ! 15: GNU CC is distributed in the hope that it will be useful, ! 16: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 17: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 18: GNU General Public License for more details. ! 19: ! 20: You should have received a copy of the GNU General Public License ! 21: along with GNU CC; see the file COPYING. If not, write to ! 22: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 23: ! 24: /* The m88100 port of GNU CC adheres to the various standards from 88open. ! 25: These documents are available by writing: ! 26: ! 27: 88open Consortium Ltd. ! 28: 100 Homeland Court, Suite 800 ! 29: San Jose, CA 95112 ! 30: (408) 436-6600 ! 31: ! 32: In brief, the current standards are: ! 33: ! 34: Binary Compatibility Standard, Release 1.1A, May 1991 ! 35: This provides for portability of application-level software at the ! 36: executable level for AT&T System V Release 3.2. ! 37: ! 38: Object Compatibility Standard, Release 1.1A, May 1991 ! 39: This provides for portability of application-level software at the ! 40: object file and library level for C, Fortran, and Cobol, and again, ! 41: largely for SVR3. ! 42: ! 43: Under development are standards for AT&T System V Release 4, based on the ! 44: [generic] System V Application Binary Interface from AT&T. These include: ! 45: ! 46: System V Application Binary Interface, Motorola 88000 Processor Supplement ! 47: Another document from AT&T for SVR4 specific to the m88100. ! 48: Available from Prentice Hall. ! 49: ! 50: System V Application Binary Interface, Motorola 88000 Processor Supplement, ! 51: Release 1.1, Draft H, May 6, 1991 ! 52: A proposed update to the AT&T document from 88open. ! 53: ! 54: System V ABI Implementation Guide for the M88000 Processor, ! 55: Release 1.0, January 1991 ! 56: A companion ABI document from 88open. */ ! 57: ! 58: /* Other m88k*.h files include this one and override certain items. ! 59: At present, these are m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h. ! 60: Additionally, m88kv4.h and m88kdgux.h include svr4.h first. All other ! 61: m88k targets except m88kluna.h are based on svr3.h. */ ! 62: ! 63: /* Choose SVR3 as the default. */ ! 64: #if !defined(DBX_DEBUGGING_INFO) && !defined(DWARF_DEBUGGING_INFO) ! 65: #include "svr3.h" ! 66: #endif ! 67: ! 68: /* External types used. */ ! 69: ! 70: /* What instructions are needed to manufacture an integer constant. */ ! 71: enum m88k_instruction { ! 72: m88k_zero, ! 73: m88k_or, ! 74: m88k_subu, ! 75: m88k_or_lo16, ! 76: m88k_or_lo8, ! 77: m88k_set, ! 78: m88k_oru_hi16, ! 79: m88k_oru_or ! 80: }; ! 81: ! 82: /* External variables/functions defined in m88k.c. */ ! 83: ! 84: extern char *m88k_pound_sign; ! 85: extern char *m88k_short_data; ! 86: extern char *m88k_version; ! 87: extern char m88k_volatile_code; ! 88: ! 89: extern int m88k_gp_threshold; ! 90: extern int m88k_prologue_done; ! 91: extern int m88k_function_number; ! 92: extern int m88k_fp_offset; ! 93: extern int m88k_stack_size; ! 94: extern int m88k_case_index; ! 95: extern int m88k_version_0300; ! 96: ! 97: extern struct rtx_def *m88k_compare_reg; ! 98: extern struct rtx_def *m88k_compare_op0; ! 99: extern struct rtx_def *m88k_compare_op1; ! 100: ! 101: extern enum attr_cpu m88k_cpu; ! 102: ! 103: extern int null_prologue (); ! 104: extern int integer_ok_for_set (); ! 105: extern int m88k_debugger_offset (); ! 106: ! 107: extern void emit_bcnd (); ! 108: extern void expand_block_move (); ! 109: extern void m88k_layout_frame (); ! 110: extern void m88k_expand_prologue (); ! 111: extern void m88k_begin_prologue (); ! 112: extern void m88k_end_prologue (); ! 113: extern void m88k_expand_epilogue (); ! 114: extern void m88k_begin_epilogue (); ! 115: extern void m88k_end_epilogue (); ! 116: extern void output_function_profiler (); ! 117: extern void output_function_block_profiler (); ! 118: extern void output_block_profiler (); ! 119: extern void output_file_start (); ! 120: extern void output_ascii (); ! 121: extern void output_label (); ! 122: extern void print_operand (); ! 123: extern void print_operand_address (); ! 124: ! 125: extern char *output_load_const_int (); ! 126: extern char *output_load_const_float (); ! 127: extern char *output_load_const_double (); ! 128: extern char *output_load_const_dimode (); ! 129: extern char *output_and (); ! 130: extern char *output_ior (); ! 131: extern char *output_xor (); ! 132: extern char *output_call (); ! 133: ! 134: extern struct rtx_def *emit_test (); ! 135: extern struct rtx_def *legitimize_address (); ! 136: extern struct rtx_def *legitimize_operand (); ! 137: extern struct rtx_def *m88k_function_arg (); ! 138: extern struct rtx_def *m88k_builtin_saveregs (); ! 139: ! 140: extern enum m88k_instruction classify_integer (); ! 141: ! 142: /* external variables defined elsewhere in the compiler */ ! 143: ! 144: extern int target_flags; /* -m compiler switches */ ! 145: extern int frame_pointer_needed; /* current function has a FP */ ! 146: extern int current_function_pretend_args_size; /* args size without ... */ ! 147: extern int flag_delayed_branch; /* -fdelayed-branch */ ! 148: extern int flag_pic; /* -fpic */ ! 149: extern char * reg_names[]; ! 150: ! 151: /* Specify the default monitors. The meaning of these values can ! 152: be obtained by doing "grep MONITOR_GCC *m88k*". Generally, the ! 153: values downward from 0x8000 are tests that will soon go away. ! 154: values upward from 0x1 are generally useful tests that will remain. */ ! 155: ! 156: #ifndef MONITOR_GCC ! 157: #define MONITOR_GCC 0 ! 158: #endif ! 159: ! 160: /*** Controlling the Compilation Driver, `gcc' ***/ ! 161: ! 162: /* Some machines may desire to change what optimizations are performed for ! 163: various optimization levels. This macro, if defined, is executed once ! 164: just after the optimization level is determined and before the remainder ! 165: of the command options have been parsed. Values set in this macro are ! 166: used as the default values for the other command line options. ! 167: ! 168: LEVEL is the optimization level specified; 2 if -O2 is specified, ! 169: 1 if -O is specified, and 0 if neither is specified. */ ! 170: ! 171: /* This macro used to store 0 in flag_signed_bitfields. ! 172: Not only is that misuse of this macro; the whole idea is wrong. ! 173: ! 174: The GNU C dialect makes bitfields signed by default, ! 175: regardless of machine type. Making any machine inconsistent in this ! 176: regard is bad for portability. ! 177: ! 178: I chose to make bitfields signed by default because this is consistent ! 179: with the way ordinary variables are handled: `int' equals `signed int'. ! 180: If there is a good reason to prefer making bitfields unsigned by default, ! 181: it cannot have anything to do with the choice of machine. ! 182: If the reason is good enough, we should change the convention for all machines. ! 183: ! 184: -- rms, 20 July 1991. */ ! 185: ! 186: #define OPTIMIZATION_OPTIONS(LEVEL) \ ! 187: do { \ ! 188: if (LEVEL) \ ! 189: { \ ! 190: flag_omit_frame_pointer = 1; \ ! 191: } \ ! 192: } while (0) ! 193: ! 194: /* If -m88100 is in effect, add -D__m88100__; similarly for -m88110. ! 195: Here, the CPU_DEFAULT is assumed to be -m88100. */ ! 196: #undef CPP_SPEC ! 197: #define CPP_SPEC "%{!m88000:%{!m88100:%{m88110:-D__m88110__}}} \ ! 198: %{!m88000:%{!m88110:-D__m88100__}}" ! 199: ! 200: /* LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC defined in svr3.h. ! 201: ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and STARTFILE_SPEC redefined ! 202: in svr4.h. ! 203: CPP_SPEC, ASM_SPEC, ASM_FINAL_SPEC, LIB_SPEC, LINK_SPEC, and ! 204: STARTFILE_SPEC redefined in m88kdgux.h. */ ! 205: ! 206: /*** Run-time Target Specification ***/ ! 207: ! 208: /* Names to predefine in the preprocessor for this target machine. ! 209: Redefined in m88kv3.h, m88kv4.h, m88kdgux.h, and m88kluna.h. */ ! 210: #define CPP_PREDEFINES "-Dm88000 -Dm88k -Dunix -D__CLASSIFY_TYPE__=2 -Asystem(unix) -Acpu(m88k) -Amachine(m88k)" ! 211: ! 212: #define TARGET_VERSION fprintf (stderr, " (%s%s)", \ ! 213: VERSION_INFO1, VERSION_INFO2) ! 214: ! 215: /* Print subsidiary information on the compiler version in use. ! 216: Redefined in m88kv4.h, and m88kluna.h. */ ! 217: #define VERSION_INFO1 "88open OCS/BCS, " ! 218: #define VERSION_INFO2 "12/16/92" ! 219: #define VERSION_STRING version_string ! 220: #define TM_SCCS_ID "@(#)m88k.h 2.3.3.2 12/16/92 08:26:09" ! 221: ! 222: /* Run-time compilation parameters selecting different hardware subsets. */ ! 223: ! 224: /* Macro to define tables used to set the flags. ! 225: This is a list in braces of pairs in braces, ! 226: each pair being { "NAME", VALUE } ! 227: where VALUE is the bits to set or minus the bits to clear. ! 228: An empty string NAME is used to identify the default VALUE. */ ! 229: ! 230: #define MASK_88100 0x00000001 /* Target m88100 */ ! 231: #define MASK_88110 0x00000002 /* Target m88110 */ ! 232: #define MASK_OCS_DEBUG_INFO 0x00000004 /* Emit .tdesc info */ ! 233: #define MASK_OCS_FRAME_POSITION 0x00000008 /* Debug frame = CFA, not r30 */ ! 234: #define MASK_SVR4 0x00000010 /* Target is AT&T System V.4 */ ! 235: #define MASK_NO_UNDERSCORES 0x00000040 /* Don't emit a leading `_' */ ! 236: #define MASK_BIG_PIC 0x00000080 /* PIC with large got-rel's -fPIC */ ! 237: #define MASK_TRAP_LARGE_SHIFT 0x00000100 /* Trap if shift not <= 31 */ ! 238: #define MASK_HANDLE_LARGE_SHIFT 0x00000200 /* Handle shift count >= 32 */ ! 239: #define MASK_CHECK_ZERO_DIV 0x00000400 /* Check for int div. by 0 */ ! 240: #define MASK_USE_DIV 0x00000800 /* No signed div. checks */ ! 241: #define MASK_IDENTIFY_REVISION 0x00001000 /* Emit ident, with GCC rev */ ! 242: #define MASK_WARN_PASS_STRUCT 0x00002000 /* Warn about passed structs */ ! 243: #define MASK_OPTIMIZE_ARG_AREA 0x00004000 /* Save stack space */ ! 244: #define MASK_NO_SERIALIZE_VOLATILE 0x00008000 /* Serialize volatile refs */ ! 245: ! 246: #define MASK_88000 (MASK_88100 | MASK_88110) ! 247: #define MASK_EITHER_LARGE_SHIFT (MASK_TRAP_LARGE_SHIFT | \ ! 248: MASK_HANDLE_LARGE_SHIFT) ! 249: ! 250: #define TARGET_88100 ((target_flags & MASK_88000) == MASK_88100) ! 251: #define TARGET_88110 ((target_flags & MASK_88000) == MASK_88110) ! 252: #define TARGET_88000 ((target_flags & MASK_88000) == MASK_88000) ! 253: ! 254: #define TARGET_OCS_DEBUG_INFO (target_flags & MASK_OCS_DEBUG_INFO) ! 255: #define TARGET_OCS_FRAME_POSITION (target_flags & MASK_OCS_FRAME_POSITION) ! 256: #define TARGET_SVR4 (target_flags & MASK_SVR4) ! 257: #define TARGET_NO_UNDERSCORES (target_flags & MASK_NO_UNDERSCORES) ! 258: #define TARGET_BIG_PIC (target_flags & MASK_BIG_PIC) ! 259: #define TARGET_TRAP_LARGE_SHIFT (target_flags & MASK_TRAP_LARGE_SHIFT) ! 260: #define TARGET_HANDLE_LARGE_SHIFT (target_flags & MASK_HANDLE_LARGE_SHIFT) ! 261: #define TARGET_CHECK_ZERO_DIV (target_flags & MASK_CHECK_ZERO_DIV) ! 262: #define TARGET_USE_DIV (target_flags & MASK_USE_DIV) ! 263: #define TARGET_IDENTIFY_REVISION (target_flags & MASK_IDENTIFY_REVISION) ! 264: #define TARGET_WARN_PASS_STRUCT (target_flags & MASK_WARN_PASS_STRUCT) ! 265: #define TARGET_OPTIMIZE_ARG_AREA (target_flags & MASK_OPTIMIZE_ARG_AREA) ! 266: #define TARGET_SERIALIZE_VOLATILE (!(target_flags & MASK_NO_SERIALIZE_VOLATILE)) ! 267: ! 268: #define TARGET_EITHER_LARGE_SHIFT (target_flags & MASK_EITHER_LARGE_SHIFT) ! 269: ! 270: /* Redefined in m88kv3.h,m88kv4.h, and m88kdgux.h. */ ! 271: #define TARGET_DEFAULT (MASK_CHECK_ZERO_DIV) ! 272: #define CPU_DEFAULT MASK_88100 ! 273: ! 274: #define TARGET_SWITCHES \ ! 275: { \ ! 276: { "88110", MASK_88110 }, \ ! 277: { "88100", MASK_88100 }, \ ! 278: { "88000", MASK_88000 }, \ ! 279: { "ocs-debug-info", MASK_OCS_DEBUG_INFO }, \ ! 280: { "no-ocs-debug-info", -MASK_OCS_DEBUG_INFO }, \ ! 281: { "ocs-frame-position", MASK_OCS_FRAME_POSITION }, \ ! 282: { "no-ocs-frame-position", -MASK_OCS_FRAME_POSITION }, \ ! 283: { "svr4", MASK_SVR4 }, \ ! 284: { "svr3", -MASK_SVR4 }, \ ! 285: { "no-underscores", MASK_NO_UNDERSCORES }, \ ! 286: { "big-pic", MASK_BIG_PIC }, \ ! 287: { "trap-large-shift", MASK_TRAP_LARGE_SHIFT }, \ ! 288: { "handle-large-shift", MASK_HANDLE_LARGE_SHIFT }, \ ! 289: { "check-zero-division", MASK_CHECK_ZERO_DIV }, \ ! 290: { "no-check-zero-division", -MASK_CHECK_ZERO_DIV }, \ ! 291: { "use-div-instruction", MASK_USE_DIV }, \ ! 292: { "identify-revision", MASK_IDENTIFY_REVISION }, \ ! 293: { "warn-passed-structs", MASK_WARN_PASS_STRUCT }, \ ! 294: { "optimize-arg-area", MASK_OPTIMIZE_ARG_AREA }, \ ! 295: { "no-optimize-arg-area", -MASK_OPTIMIZE_ARG_AREA }, \ ! 296: { "no-serialize-volatile", MASK_NO_SERIALIZE_VOLATILE }, \ ! 297: { "serialize-volatile", -MASK_NO_SERIALIZE_VOLATILE }, \ ! 298: SUBTARGET_SWITCHES \ ! 299: /* Default switches */ \ ! 300: { "", TARGET_DEFAULT }, \ ! 301: } ! 302: ! 303: /* Redefined in m88kdgux.h. */ ! 304: #define SUBTARGET_SWITCHES ! 305: ! 306: /* Macro to define table for command options with values. */ ! 307: ! 308: #define TARGET_OPTIONS { { "short-data-", &m88k_short_data }, \ ! 309: { "version-", &m88k_version } } ! 310: ! 311: /* Do any checking or such that is needed after processing the -m switches. */ ! 312: ! 313: #define OVERRIDE_OPTIONS \ ! 314: do { \ ! 315: register int i; \ ! 316: \ ! 317: if ((target_flags & MASK_88000) == 0) \ ! 318: target_flags |= CPU_DEFAULT; \ ! 319: \ ! 320: m88k_cpu = (TARGET_88000 ? CPU_M88000 \ ! 321: : (TARGET_88100 ? CPU_M88100 : CPU_M88110)); \ ! 322: \ ! 323: if (TARGET_BIG_PIC) \ ! 324: flag_pic = 2; \ ! 325: \ ! 326: if ((target_flags & MASK_EITHER_LARGE_SHIFT) == MASK_EITHER_LARGE_SHIFT) \ ! 327: error ("-mtrap-large-shift and -mhandle-large-shift are incompatible");\ ! 328: \ ! 329: m88k_version_0300 = (m88k_version != 0 \ ! 330: && strcmp (m88k_version, "03.00") >= 0); \ ! 331: \ ! 332: if (VERSION_0300_SYNTAX) \ ! 333: { \ ! 334: for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) \ ! 335: reg_names[i]--; \ ! 336: m88k_pound_sign = "#"; \ ! 337: if (m88k_version == 0) \ ! 338: m88k_version = VERSION_0400_SYNTAX ? "04.00" : "03.00"; \ ! 339: else if (strcmp (m88k_version, "03.00") < 0) \ ! 340: error ("Specified assembler version (%s) is less that 03.00", \ ! 341: m88k_version); \ ! 342: } \ ! 343: \ ! 344: m88k_version_0300 = (m88k_version != 0 \ ! 345: && strcmp (m88k_version, "03.00") >= 0); \ ! 346: \ ! 347: if (m88k_short_data) \ ! 348: { \ ! 349: char *p = m88k_short_data; \ ! 350: while (*p) \ ! 351: if (*p >= '0' && *p <= '9') \ ! 352: p++; \ ! 353: else \ ! 354: { \ ! 355: error ("Invalid option `-mshort-data-%s'", m88k_short_data); \ ! 356: break; \ ! 357: } \ ! 358: m88k_gp_threshold = atoi (m88k_short_data); \ ! 359: if (flag_pic) \ ! 360: error ("-mshort-data-%s and PIC are incompatible", m88k_short_data); \ ! 361: } \ ! 362: } while (0) ! 363: ! 364: /*** Storage Layout ***/ ! 365: ! 366: /* Sizes in bits of the various types. */ ! 367: #define CHAR_TYPE_SIZE 8 ! 368: #define SHORT_TYPE_SIZE 16 ! 369: #define INT_TYPE_SIZE 32 ! 370: #define LONG_TYPE_SIZE 32 ! 371: #define LONG_LONG_TYPE_SIZE 64 ! 372: #define FLOAT_TYPE_SIZE 32 ! 373: #define DOUBLE_TYPE_SIZE 64 ! 374: #define LONG_DOUBLE_TYPE_SIZE 64 ! 375: ! 376: /* Define this if most significant bit is lowest numbered ! 377: in instructions that operate on numbered bit-fields. ! 378: Somewhat arbitrary. It matches the bit field patterns. */ ! 379: #define BITS_BIG_ENDIAN 1 ! 380: ! 381: /* Define this if most significant byte of a word is the lowest numbered. ! 382: That is true on the m88000. */ ! 383: #define BYTES_BIG_ENDIAN 1 ! 384: ! 385: /* Define this if most significant word of a multiword number is the lowest ! 386: numbered. ! 387: For the m88000 we can decide arbitrarily since there are no machine ! 388: instructions for them. */ ! 389: #define WORDS_BIG_ENDIAN 1 ! 390: ! 391: /* Number of bits in an addressable storage unit */ ! 392: #define BITS_PER_UNIT 8 ! 393: ! 394: /* Width in bits of a "word", which is the contents of a machine register. ! 395: Note that this is not necessarily the width of data type `int'; ! 396: if using 16-bit ints on a 68000, this would still be 32. ! 397: But on a machine with 16-bit registers, this would be 16. */ ! 398: #define BITS_PER_WORD 32 ! 399: ! 400: /* Width of a word, in units (bytes). */ ! 401: #define UNITS_PER_WORD 4 ! 402: ! 403: /* Width in bits of a pointer. ! 404: See also the macro `Pmode' defined below. */ ! 405: #define POINTER_SIZE 32 ! 406: ! 407: /* Allocation boundary (in *bits*) for storing arguments in argument list. */ ! 408: #define PARM_BOUNDARY 32 ! 409: ! 410: /* Largest alignment for stack parameters (if greater than PARM_BOUNDARY). */ ! 411: #define MAX_PARM_BOUNDARY 64 ! 412: ! 413: /* Boundary (in *bits*) on which stack pointer should be aligned. */ ! 414: #define STACK_BOUNDARY 128 ! 415: ! 416: /* Allocation boundary (in *bits*) for the code of a function. On the ! 417: m88100, it is desirable to align to a cache line. However, SVR3 targets ! 418: only provided 8 byte alignment. The m88110 cache is small, so align ! 419: to an 8 byte boundary. Pack code tightly when compiling crtstuff.c. */ ! 420: #define FUNCTION_BOUNDARY (flag_inhibit_size_directive ? 32 : \ ! 421: (TARGET_88100 && TARGET_SVR4 ? 128 : 64)) ! 422: ! 423: /* No data type wants to be aligned rounder than this. */ ! 424: #define BIGGEST_ALIGNMENT 64 ! 425: ! 426: /* The best alignment to use in cases where we have a choice. */ ! 427: #define FASTEST_ALIGNMENT (TARGET_88100 ? 32 : 64) ! 428: ! 429: /* Make strings 4/8 byte aligned so strcpy from constants will be faster. */ ! 430: #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ ! 431: ((TREE_CODE (EXP) == STRING_CST \ ! 432: && (ALIGN) < FASTEST_ALIGNMENT) \ ! 433: ? FASTEST_ALIGNMENT : (ALIGN)) ! 434: ! 435: /* Make arrays of chars 4/8 byte aligned for the same reasons. */ ! 436: #define DATA_ALIGNMENT(TYPE, ALIGN) \ ! 437: (TREE_CODE (TYPE) == ARRAY_TYPE \ ! 438: && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ ! 439: && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) ! 440: ! 441: /* Alignment of field after `int : 0' in a structure. ! 442: Ignored with PCC_BITFIELD_TYPE_MATTERS. */ ! 443: /* #define EMPTY_FIELD_BOUNDARY 8 */ ! 444: ! 445: /* Every structure's size must be a multiple of this. */ ! 446: #define STRUCTURE_SIZE_BOUNDARY 8 ! 447: ! 448: /* Set this nonzero if move instructions will actually fail to work ! 449: when given unaligned data. */ ! 450: #define STRICT_ALIGNMENT 1 ! 451: ! 452: /* A bitfield declared as `int' forces `int' alignment for the struct. */ ! 453: #define PCC_BITFIELD_TYPE_MATTERS 1 ! 454: ! 455: /* Maximum size (in bits) to use for the largest integral type that ! 456: replaces a BLKmode type. */ ! 457: /* #define MAX_FIXED_MODE_SIZE 0 */ ! 458: ! 459: /* Check a `double' value for validity for a particular machine mode. ! 460: This is defined to avoid crashes outputting certain constants. ! 461: Since we output the number in hex, the assembler won't choke on it. */ ! 462: /* #define CHECK_FLOAT_VALUE(MODE,VALUE) */ ! 463: ! 464: /* A code distinguishing the floating point format of the target machine. */ ! 465: /* #define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT */ ! 466: ! 467: /*** Register Usage ***/ ! 468: ! 469: /* Number of actual hardware registers. ! 470: The hardware registers are assigned numbers for the compiler ! 471: from 0 to just below FIRST_PSEUDO_REGISTER. ! 472: All registers that the compiler knows about must be given numbers, ! 473: even those that are not normally considered general registers. ! 474: ! 475: The m88100 has a General Register File (GRF) of 32 32-bit registers. ! 476: The m88110 adds an Extended Register File (XRF) of 32 80-bit registers. */ ! 477: #define FIRST_PSEUDO_REGISTER 64 ! 478: #define FIRST_EXTENDED_REGISTER 32 ! 479: ! 480: /* General notes on extended registers, their use and misuse. ! 481: ! 482: Possible good uses: ! 483: ! 484: spill area instead of memory. ! 485: -waste if only used once ! 486: ! 487: floating point calculations ! 488: -probably a waste unless we have run out of general purpose registers ! 489: ! 490: freeing up general purpose registers ! 491: -e.g. may be able to have more loop invariants if floating ! 492: point is moved into extended registers. ! 493: ! 494: ! 495: I've noticed wasteful moves into and out of extended registers; e.g. a load ! 496: into x21, then inside a loop a move into r24, then r24 used as input to ! 497: an fadd. Why not just load into r24 to begin with? Maybe the new cse.c ! 498: will address this. This wastes a move, but the load,store and move could ! 499: have been saved had extended registers been used throughout. ! 500: E.g. in the code following code, if z and xz are placed in extended ! 501: registers, there is no need to save preserve registers. ! 502: ! 503: long c=1,d=1,e=1,f=1,g=1,h=1,i=1,j=1,k; ! 504: ! 505: double z=0,xz=4.5; ! 506: ! 507: foo(a,b) ! 508: long a,b; ! 509: { ! 510: while (a < b) ! 511: { ! 512: k = b + c + d + e + f + g + h + a + i + j++; ! 513: z += xz; ! 514: a++; ! 515: } ! 516: printf("k= %d; z=%f;\n", k, z); ! 517: } ! 518: ! 519: I've found that it is possible to change the constraints (putting * before ! 520: the 'r' constraints int the fadd.ddd instruction) and get the entire ! 521: addition and store to go into extended registers. However, this also ! 522: forces simple addition and return of floating point arguments to a ! 523: function into extended registers. Not the correct solution. ! 524: ! 525: Found the following note in local-alloc.c which may explain why I can't ! 526: get both registers to be in extended registers since two are allocated in ! 527: local-alloc and one in global-alloc. Doesn't explain (I don't believe) ! 528: why an extended register is used instead of just using the preserve ! 529: register. ! 530: ! 531: from local-alloc.c: ! 532: We have provision to exempt registers, even when they are contained ! 533: within the block, that can be tied to others that are not contained in it. ! 534: This is so that global_alloc could process them both and tie them then. ! 535: But this is currently disabled since tying in global_alloc is not ! 536: yet implemented. ! 537: ! 538: The explanation of why the preserved register is not used is as follows, ! 539: I believe. The registers are being allocated in order. Tying is not ! 540: done so efficiently, so when it comes time to do the first allocation, ! 541: there are no registers left to use without spilling except extended ! 542: registers. Then when the next pseudo register needs a hard reg, there ! 543: are still no registers to be had for free, but this one must be a GRF ! 544: reg instead of an extended reg, so a preserve register is spilled. Thus ! 545: the move from extended to GRF is necessitated. I do not believe this can ! 546: be 'fixed' through the config/*m88k* files. ! 547: ! 548: gcc seems to sometimes make worse use of register allocation -- not counting ! 549: moves -- whenever extended registers are present. For example in the ! 550: whetstone, the simple for loop (slightly modified) ! 551: for(i = 1; i <= n1; i++) ! 552: { ! 553: x1 = (x1 + x2 + x3 - x4) * t; ! 554: x2 = (x1 + x2 - x3 + x4) * t; ! 555: x3 = (x1 - x2 + x3 + x4) * t; ! 556: x4 = (x1 + x2 + x3 + x4) * t; ! 557: } ! 558: in general loads the high bits of the addresses of x2-x4 and i into registers ! 559: outside the loop. Whenever extended registers are used, it loads all of ! 560: these inside the loop. My conjecture is that since the 88110 has so many ! 561: registers, and gcc makes no distinction at this point -- just that they are ! 562: not fixed, that in loop.c it believes it can expect a number of registers ! 563: to be available. Then it allocates 'too many' in local-alloc which causes ! 564: problems later. 'Too many' are allocated because a large portion of the ! 565: registers are extended registers and cannot be used for certain purposes ! 566: ( e.g. hold the address of a variable). When this loop is compiled on its ! 567: own, the problem does not occur. I don't know the solution yet, though it ! 568: is probably in the base sources. Possibly a different way to calculate ! 569: "threshold". */ ! 570: ! 571: /* 1 for registers that have pervasive standard uses and are not available ! 572: for the register allocator. Registers r14-r25 and x22-x29 are expected ! 573: to be preserved across function calls. ! 574: ! 575: On the 88000, the standard uses of the General Register File (GRF) are: ! 576: Reg 0 = Pseudo argument pointer (hardware fixed to 0). ! 577: Reg 1 = Subroutine return pointer (hardware). ! 578: Reg 2-9 = Parameter registers (OCS). ! 579: Reg 10 = OCS reserved temporary. ! 580: Reg 11 = Static link if needed [OCS reserved temporary]. ! 581: Reg 12 = Address of structure return (OCS). ! 582: Reg 13 = OCS reserved temporary. ! 583: Reg 14-25 = Preserved register set. ! 584: Reg 26-29 = Reserved by OCS and ABI. ! 585: Reg 30 = Frame pointer (Common use). ! 586: Reg 31 = Stack pointer. ! 587: ! 588: The following follows the current 88open UCS specification for the ! 589: Extended Register File (XRF): ! 590: Reg 32 = x0 Always equal to zero ! 591: Reg 33-53 = x1-x21 Temporary registers (Caller Save) ! 592: Reg 54-61 = x22-x29 Preserver registers (Callee Save) ! 593: Reg 62-63 = x30-x31 Reserved for future ABI use. ! 594: ! 595: Note: The current 88110 extended register mapping is subject to change. ! 596: The bias towards caller-save registers is based on the ! 597: presumption that memory traffic can potentially be reduced by ! 598: allowing the "caller" to save only that part of the register ! 599: which is actually being used. (i.e. don't do a st.x if a st.d ! 600: is sufficient). Also, in scientific code (a.k.a. Fortran), the ! 601: large number of variables defined in common blocks may require ! 602: that almost all registers be saved across calls anyway. */ ! 603: ! 604: #define FIXED_REGISTERS \ ! 605: {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 606: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \ ! 607: 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ ! 608: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1} ! 609: ! 610: /* 1 for registers not available across function calls. ! 611: These must include the FIXED_REGISTERS and also any ! 612: registers that can be used without being saved. ! 613: The latter must include the registers where values are returned ! 614: and the register where structure-value addresses are passed. ! 615: Aside from that, you can include as many other registers as you like. */ ! 616: ! 617: #define CALL_USED_REGISTERS \ ! 618: {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, \ ! 619: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \ ! 620: 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ ! 621: 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1} ! 622: ! 623: /* Macro to conditionally modify fixed_regs/call_used_regs. */ ! 624: #define CONDITIONAL_REGISTER_USAGE \ ! 625: { \ ! 626: if (! TARGET_88110) \ ! 627: { \ ! 628: register int i; \ ! 629: for (i = FIRST_EXTENDED_REGISTER; i < FIRST_PSEUDO_REGISTER; i++) \ ! 630: { \ ! 631: fixed_regs[i] = 1; \ ! 632: call_used_regs[i] = 1; \ ! 633: } \ ! 634: } \ ! 635: if (flag_pic) \ ! 636: { \ ! 637: /* Current hack to deal with -fpic -O2 problems. */ \ ! 638: fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ ! 639: call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ ! 640: global_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ ! 641: } \ ! 642: } ! 643: ! 644: /* These interfaces that don't apply to the m88000. */ ! 645: /* OVERLAPPING_REGNO_P(REGNO) 0 */ ! 646: /* INSN_CLOBBERS_REGNO_P(INSN, REGNO) 0 */ ! 647: /* PRESERVE_DEATH_INFO_REGNO_P(REGNO) 0 */ ! 648: ! 649: /* True if register is an extended register. */ ! 650: #define XRF_REGNO_P(N) ((N) < FIRST_PSEUDO_REGISTER && (N) >= FIRST_EXTENDED_REGISTER) ! 651: ! 652: /* Return number of consecutive hard regs needed starting at reg REGNO ! 653: to hold something of mode MODE. ! 654: This is ordinarily the length in words of a value of mode MODE ! 655: but can be less for certain modes in special long registers. ! 656: ! 657: On the m88000, GRF registers hold 32-bits and XRF registers hold 80-bits. ! 658: An XRF register can hold any mode, but two GRF registers are required ! 659: for larger modes. */ ! 660: #define HARD_REGNO_NREGS(REGNO, MODE) \ ! 661: (XRF_REGNO_P (REGNO) \ ! 662: ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) ! 663: ! 664: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. ! 665: ! 666: For double integers, we never put the value into an odd register so that ! 667: the operators don't run into the situation where the high part of one of ! 668: the inputs is the low part of the result register. (It's ok if the output ! 669: registers are the same as the input registers.) The XRF registers can ! 670: hold all modes, but only DF and SF modes can be manipulated in these ! 671: registers. The compiler should be allowed to use these as a fast spill ! 672: area. */ ! 673: #define HARD_REGNO_MODE_OK(REGNO, MODE) \ ! 674: (XRF_REGNO_P(REGNO) \ ! 675: ? (TARGET_88110 && GET_MODE_CLASS (MODE) == MODE_FLOAT) \ ! 676: : (((MODE) != DImode && (MODE) != DFmode && (MODE) != DCmode) \ ! 677: || ((REGNO) & 1) == 0)) ! 678: ! 679: /* Value is 1 if it is a good idea to tie two pseudo registers ! 680: when one has mode MODE1 and one has mode MODE2. ! 681: If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, ! 682: for any hard reg, then this must be 0 for correct output. */ ! 683: #define MODES_TIEABLE_P(MODE1, MODE2) \ ! 684: (((MODE1) == DFmode || (MODE1) == DCmode || (MODE1) == DImode \ ! 685: || (TARGET_88110 && GET_MODE_CLASS (MODE1) == MODE_FLOAT)) \ ! 686: == ((MODE2) == DFmode || (MODE2) == DCmode || (MODE2) == DImode \ ! 687: || (TARGET_88110 && GET_MODE_CLASS (MODE2) == MODE_FLOAT))) ! 688: ! 689: /* Specify the registers used for certain standard purposes. ! 690: The values of these macros are register numbers. */ ! 691: ! 692: /* the m88000 pc isn't overloaded on a register that the compiler knows about. */ ! 693: /* #define PC_REGNUM */ ! 694: ! 695: /* Register to use for pushing function arguments. */ ! 696: #define STACK_POINTER_REGNUM 31 ! 697: ! 698: /* Base register for access to local variables of the function. */ ! 699: #define FRAME_POINTER_REGNUM 30 ! 700: ! 701: /* Base register for access to arguments of the function. */ ! 702: #define ARG_POINTER_REGNUM 0 ! 703: ! 704: /* Register used in cases where a temporary is known to be safe to use. */ ! 705: #define TEMP_REGNUM 10 ! 706: ! 707: /* Register in which static-chain is passed to a function. */ ! 708: #define STATIC_CHAIN_REGNUM 11 ! 709: ! 710: /* Register in which address to store a structure value ! 711: is passed to a function. */ ! 712: #define STRUCT_VALUE_REGNUM 12 ! 713: ! 714: /* Register to hold the addressing base for position independent ! 715: code access to data items. */ ! 716: #define PIC_OFFSET_TABLE_REGNUM 25 ! 717: ! 718: /* Order in which registers are preferred (most to least). Use temp ! 719: registers, then param registers top down. Preserve registers are ! 720: top down to maximize use of double memory ops for register save. ! 721: The 88open reserved registers (r26-r29 and x30-x31) may commonly be used ! 722: in most environments with the -fcall-used- or -fcall-saved- options. */ ! 723: #define REG_ALLOC_ORDER \ ! 724: { \ ! 725: 13, 12, 11, 10, 29, 28, 27, 26, \ ! 726: 62, 63, 9, 8, 7, 6, 5, 4, \ ! 727: 3, 2, 1, 53, 52, 51, 50, 49, \ ! 728: 48, 47, 46, 45, 44, 43, 42, 41, \ ! 729: 40, 39, 38, 37, 36, 35, 34, 33, \ ! 730: 25, 24, 23, 22, 21, 20, 19, 18, \ ! 731: 17, 16, 15, 14, 61, 60, 59, 58, \ ! 732: 57, 56, 55, 54, 30, 31, 0, 32} ! 733: ! 734: /* Order for leaf functions. */ ! 735: #define REG_LEAF_ALLOC_ORDER \ ! 736: { \ ! 737: 9, 8, 7, 6, 13, 12, 11, 10, \ ! 738: 29, 28, 27, 26, 62, 63, 5, 4, \ ! 739: 3, 2, 0, 53, 52, 51, 50, 49, \ ! 740: 48, 47, 46, 45, 44, 43, 42, 41, \ ! 741: 40, 39, 38, 37, 36, 35, 34, 33, \ ! 742: 25, 24, 23, 22, 21, 20, 19, 18, \ ! 743: 17, 16, 15, 14, 61, 60, 59, 58, \ ! 744: 57, 56, 55, 54, 30, 31, 1, 32} ! 745: ! 746: /* Switch between the leaf and non-leaf orderings. The purpose is to avoid ! 747: write-over scoreboard delays between caller and callee. */ ! 748: #define ORDER_REGS_FOR_LOCAL_ALLOC \ ! 749: { \ ! 750: static int leaf[] = REG_LEAF_ALLOC_ORDER; \ ! 751: static int nonleaf[] = REG_ALLOC_ORDER; \ ! 752: \ ! 753: bcopy (regs_ever_live[1] ? nonleaf : leaf, reg_alloc_order, \ ! 754: FIRST_PSEUDO_REGISTER * sizeof (int)); \ ! 755: } ! 756: ! 757: /*** Register Classes ***/ ! 758: ! 759: /* Define the classes of registers for register constraints in the ! 760: machine description. Also define ranges of constants. ! 761: ! 762: One of the classes must always be named ALL_REGS and include all hard regs. ! 763: If there is more than one class, another class must be named NO_REGS ! 764: and contain no registers. ! 765: ! 766: The name GENERAL_REGS must be the name of a class (or an alias for ! 767: another name such as ALL_REGS). This is the class of registers ! 768: that is allowed by "g" or "r" in a register constraint. ! 769: Also, registers outside this class are allocated only when ! 770: instructions express preferences for them. ! 771: ! 772: The classes must be numbered in nondecreasing order; that is, ! 773: a larger-numbered class must never be contained completely ! 774: in a smaller-numbered class. ! 775: ! 776: For any two classes, it is very desirable that there be another ! 777: class that represents their union. */ ! 778: ! 779: /* The m88000 hardware has two kinds of registers. In addition, we denote ! 780: the arg pointer as a separate class. */ ! 781: ! 782: enum reg_class { NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS, ! 783: XGRF_REGS, ALL_REGS, LIM_REG_CLASSES }; ! 784: ! 785: #define N_REG_CLASSES (int) LIM_REG_CLASSES ! 786: ! 787: /* Give names of register classes as strings for dump file. */ ! 788: #define REG_CLASS_NAMES {"NO_REGS", "AP_REG", "XRF_REGS", "GENERAL_REGS", \ ! 789: "AGRF_REGS", "XGRF_REGS", "ALL_REGS" } ! 790: ! 791: /* Define which registers fit in which classes. ! 792: This is an initializer for a vector of HARD_REG_SET ! 793: of length N_REG_CLASSES. */ ! 794: #define REG_CLASS_CONTENTS {{0x00000000, 0x00000000}, \ ! 795: {0x00000001, 0x00000000}, \ ! 796: {0x00000000, 0xffffffff}, \ ! 797: {0xfffffffe, 0x00000000}, \ ! 798: {0xffffffff, 0x00000000}, \ ! 799: {0xfffffffe, 0xffffffff}, \ ! 800: {0xffffffff, 0xffffffff}} ! 801: ! 802: /* The same information, inverted: ! 803: Return the class number of the smallest class containing ! 804: reg number REGNO. This could be a conditional expression ! 805: or could index an array. */ ! 806: #define REGNO_REG_CLASS(REGNO) \ ! 807: ((REGNO) ? ((REGNO < 32) ? GENERAL_REGS : XRF_REGS) : AP_REG) ! 808: ! 809: /* The class value for index registers, and the one for base regs. */ ! 810: #define BASE_REG_CLASS AGRF_REGS ! 811: #define INDEX_REG_CLASS GENERAL_REGS ! 812: ! 813: /* Get reg_class from a letter such as appears in the machine description. ! 814: For the 88000, the following class/letter is defined for the XRF: ! 815: x - Extended register file */ ! 816: #define REG_CLASS_FROM_LETTER(C) \ ! 817: (((C) == 'x') ? XRF_REGS : NO_REGS) ! 818: ! 819: /* Macros to check register numbers against specific register classes. ! 820: These assume that REGNO is a hard or pseudo reg number. ! 821: They give nonzero only if REGNO is a hard reg of the suitable class ! 822: or a pseudo reg currently allocated to a suitable hard reg. ! 823: Since they use reg_renumber, they are safe only once reg_renumber ! 824: has been allocated, which happens in local-alloc.c. */ ! 825: #define REGNO_OK_FOR_BASE_P(REGNO) \ ! 826: ((REGNO) < FIRST_EXTENDED_REGISTER \ ! 827: || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER) ! 828: #define REGNO_OK_FOR_INDEX_P(REGNO) \ ! 829: (((REGNO) && (REGNO) < FIRST_EXTENDED_REGISTER) \ ! 830: || (unsigned) reg_renumber[REGNO] < FIRST_EXTENDED_REGISTER) ! 831: ! 832: /* Given an rtx X being reloaded into a reg required to be ! 833: in class CLASS, return the class of reg to actually use. ! 834: In general this is just CLASS; but on some machines ! 835: in some cases it is preferable to use a more restrictive class. ! 836: Double constants should be in a register iff they can be made cheaply. */ ! 837: #define PREFERRED_RELOAD_CLASS(X,CLASS) \ ! 838: (CONSTANT_P(X) && (CLASS == XRF_REGS) ? NO_REGS : (CLASS)) ! 839: ! 840: /* Return the register class of a scratch register needed to load IN ! 841: into a register of class CLASS in MODE. On the m88k, when PIC, we ! 842: need a temporary when loading some addresses into a register. */ ! 843: #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \ ! 844: ((flag_pic \ ! 845: && GET_CODE (IN) == CONST \ ! 846: && GET_CODE (XEXP (IN, 0)) == PLUS \ ! 847: && GET_CODE (XEXP (XEXP (IN, 0), 0)) == CONST_INT \ ! 848: && ! SMALL_INT (XEXP (XEXP (IN, 0), 1))) ? GENERAL_REGS : NO_REGS) ! 849: ! 850: /* Return the maximum number of consecutive registers ! 851: needed to represent mode MODE in a register of class CLASS. */ ! 852: #define CLASS_MAX_NREGS(CLASS, MODE) \ ! 853: ((((CLASS) == XRF_REGS) ? 1 \ ! 854: : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))) ! 855: ! 856: /* Letters in the range `I' through `P' in a register constraint string can ! 857: be used to stand for particular ranges of immediate operands. The C ! 858: expression is true iff C is a known letter and VALUE is appropriate for ! 859: that letter. ! 860: ! 861: For the m88000, the following constants are used: ! 862: `I' requires a non-negative 16-bit value. ! 863: `J' requires a non-positive 16-bit value. ! 864: `K' requires a non-negative value < 32. ! 865: `L' requires a constant with only the upper 16-bits set. ! 866: `M' requires constant values that can be formed with `set'. ! 867: `N' requires a negative value. ! 868: `O' requires zero. ! 869: `P' requires a non-negative value. */ ! 870: ! 871: /* Quick tests for certain values. */ ! 872: #define SMALL_INT(X) (SMALL_INTVAL (INTVAL (X))) ! 873: #define SMALL_INTVAL(I) ((unsigned) (I) < 0x10000) ! 874: #define ADD_INT(X) (ADD_INTVAL (INTVAL (X))) ! 875: #define ADD_INTVAL(I) ((unsigned) (I) + 0xffff < 0x1ffff) ! 876: #define POWER_OF_2(I) ((I) && POWER_OF_2_or_0(I)) ! 877: #define POWER_OF_2_or_0(I) (((I) & ((unsigned)(I) - 1)) == 0) ! 878: ! 879: #define CONST_OK_FOR_LETTER_P(VALUE, C) \ ! 880: ((C) == 'I' ? SMALL_INTVAL (VALUE) \ ! 881: : (C) == 'J' ? SMALL_INTVAL (-(VALUE)) \ ! 882: : (C) == 'K' ? (unsigned)(VALUE) < 32 \ ! 883: : (C) == 'L' ? ((VALUE) & 0xffff) == 0 \ ! 884: : (C) == 'M' ? integer_ok_for_set (VALUE) \ ! 885: : (C) == 'N' ? (VALUE) < 0 \ ! 886: : (C) == 'O' ? (VALUE) == 0 \ ! 887: : (C) == 'P' ? (VALUE) >= 0 \ ! 888: : 0) ! 889: ! 890: /* Similar, but for floating constants, and defining letters G and H. ! 891: Here VALUE is the CONST_DOUBLE rtx itself. For the m88000, the ! 892: constraints are: `G' requires zero, and `H' requires one or two. */ ! 893: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ ! 894: ((C) == 'G' ? (CONST_DOUBLE_HIGH (VALUE) == 0 \ ! 895: && CONST_DOUBLE_LOW (VALUE) == 0) \ ! 896: : 0) ! 897: ! 898: /* Letters in the range `Q' through `U' in a register constraint string ! 899: may be defined in a machine-dependent fashion to stand for arbitrary ! 900: operand types. ! 901: ! 902: For the m88k, `Q' handles addresses in a call context. */ ! 903: ! 904: #define EXTRA_CONSTRAINT(OP, C) \ ! 905: ((C) == 'Q' ? symbolic_address_p (OP) : 0) ! 906: ! 907: /*** Describing Stack Layout ***/ ! 908: ! 909: /* Define this if pushing a word on the stack moves the stack pointer ! 910: to a smaller address. */ ! 911: #define STACK_GROWS_DOWNWARD ! 912: ! 913: /* Define this if the addresses of local variable slots are at negative ! 914: offsets from the frame pointer. */ ! 915: /* #define FRAME_GROWS_DOWNWARD */ ! 916: ! 917: /* Offset from the frame pointer to the first local variable slot to be ! 918: allocated. For the m88k, the debugger wants the return address (r1) ! 919: stored at location r30+4, and the previous frame pointer stored at ! 920: location r30. */ ! 921: #define STARTING_FRAME_OFFSET 8 ! 922: ! 923: /* If we generate an insn to push BYTES bytes, this says how many the ! 924: stack pointer really advances by. The m88k has no push instruction. */ ! 925: /* #define PUSH_ROUNDING(BYTES) */ ! 926: ! 927: /* If defined, the maximum amount of space required for outgoing arguments ! 928: will be computed and placed into the variable ! 929: `current_function_outgoing_args_size'. No space will be pushed ! 930: onto the stack for each call; instead, the function prologue should ! 931: increase the stack frame size by this amount. */ ! 932: #define ACCUMULATE_OUTGOING_ARGS ! 933: ! 934: /* Offset from the stack pointer register to the first location at which ! 935: outgoing arguments are placed. Use the default value zero. */ ! 936: /* #define STACK_POINTER_OFFSET 0 */ ! 937: ! 938: /* Offset of first parameter from the argument pointer register value. ! 939: Using an argument pointer, this is 0 for the m88k. GCC knows ! 940: how to eliminate the argument pointer references if necessary. */ ! 941: #define FIRST_PARM_OFFSET(FNDECL) 0 ! 942: ! 943: /* Define this if functions should assume that stack space has been ! 944: allocated for arguments even when their values are passed in ! 945: registers. ! 946: ! 947: The value of this macro is the size, in bytes, of the area reserved for ! 948: arguments passed in registers. ! 949: ! 950: This space can either be allocated by the caller or be a part of the ! 951: machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE' ! 952: says which. */ ! 953: #define REG_PARM_STACK_SPACE(FNDECL) 32 ! 954: ! 955: /* Define this macro if REG_PARM_STACK_SPACE is defined but stack ! 956: parameters don't skip the area specified by REG_PARM_STACK_SPACE. ! 957: Normally, when a parameter is not passed in registers, it is placed on ! 958: the stack beyond the REG_PARM_STACK_SPACE area. Defining this macro ! 959: suppresses this behavior and causes the parameter to be passed on the ! 960: stack in its natural location. */ ! 961: #define STACK_PARMS_IN_REG_PARM_AREA ! 962: ! 963: /* Define this if it is the responsibility of the caller to allocate the ! 964: area reserved for arguments passed in registers. If ! 965: `ACCUMULATE_OUTGOING_ARGS' is also defined, the only effect of this ! 966: macro is to determine whether the space is included in ! 967: `current_function_outgoing_args_size'. */ ! 968: /* #define OUTGOING_REG_PARM_STACK_SPACE */ ! 969: ! 970: /* Offset from the stack pointer register to an item dynamically allocated ! 971: on the stack, e.g., by `alloca'. ! 972: ! 973: The default value for this macro is `STACK_POINTER_OFFSET' plus the ! 974: length of the outgoing arguments. The default is correct for most ! 975: machines. See `function.c' for details. */ ! 976: /* #define STACK_DYNAMIC_OFFSET(FUNDECL) ... */ ! 977: ! 978: /* Value is the number of bytes of arguments automatically ! 979: popped when returning from a subroutine call. ! 980: FUNTYPE is the data type of the function (as a tree), ! 981: or for a library call it is an identifier node for the subroutine name. ! 982: SIZE is the number of bytes of arguments passed on the stack. */ ! 983: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0 ! 984: ! 985: /* Define how to find the value returned by a function. ! 986: VALTYPE is the data type of the value (as a tree). ! 987: If the precise function being called is known, FUNC is its FUNCTION_DECL; ! 988: otherwise, FUNC is 0. */ ! 989: #define FUNCTION_VALUE(VALTYPE, FUNC) \ ! 990: gen_rtx (REG, \ ! 991: TYPE_MODE (VALTYPE) == BLKmode ? SImode : TYPE_MODE (VALTYPE), \ ! 992: 2) ! 993: ! 994: /* Define this if it differs from FUNCTION_VALUE. */ ! 995: /* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) ... */ ! 996: ! 997: /* Disable the promotion of some structures and unions to registers. */ ! 998: #define RETURN_IN_MEMORY(TYPE) \ ! 999: (TYPE_MODE (TYPE) == BLKmode \ ! 1000: || ((TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE(TYPE) == UNION_TYPE) \ ! 1001: && !(TYPE_MODE (TYPE) == SImode \ ! 1002: || (TYPE_MODE (TYPE) == BLKmode \ ! 1003: && TYPE_ALIGN (TYPE) == BITS_PER_WORD \ ! 1004: && int_size_in_bytes (TYPE) == UNITS_PER_WORD)))) ! 1005: ! 1006: /* Don't default to pcc-struct-return, because we have already specified ! 1007: exactly how to return structures in the RETURN_IN_MEMORY macro. */ ! 1008: #define DEFAULT_PCC_STRUCT_RETURN 0 ! 1009: ! 1010: /* Define how to find the value returned by a library function ! 1011: assuming the value has mode MODE. */ ! 1012: #define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 2) ! 1013: ! 1014: /* True if N is a possible register number for a function value ! 1015: as seen by the caller. */ ! 1016: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2) ! 1017: ! 1018: /* Determine whether a function argument is passed in a register, and ! 1019: which register. See m88k.c. */ ! 1020: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ ! 1021: m88k_function_arg (CUM, MODE, TYPE, NAMED) ! 1022: ! 1023: /* Define this if it differs from FUNCTION_ARG. */ ! 1024: /* #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) ... */ ! 1025: ! 1026: /* A C expression for the number of words, at the beginning of an ! 1027: argument, must be put in registers. The value must be zero for ! 1028: arguments that are passed entirely in registers or that are entirely ! 1029: pushed on the stack. */ ! 1030: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0) ! 1031: ! 1032: /* A C expression that indicates when an argument must be passed by ! 1033: reference. If nonzero for an argument, a copy of that argument is ! 1034: made in memory and a pointer to the argument is passed instead of the ! 1035: argument itself. The pointer is passed in whatever way is appropriate ! 1036: for passing a pointer to that type. */ ! 1037: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) (0) ! 1038: ! 1039: /* A C type for declaring a variable that is used as the first argument ! 1040: of `FUNCTION_ARG' and other related values. It suffices to count ! 1041: the number of words of argument so far. */ ! 1042: #define CUMULATIVE_ARGS int ! 1043: ! 1044: /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a ! 1045: function whose data type is FNTYPE. For a library call, FNTYPE is 0. */ ! 1046: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0) ! 1047: ! 1048: /* A C statement (sans semicolon) to update the summarizer variable ! 1049: CUM to advance past an argument in the argument list. The values ! 1050: MODE, TYPE and NAMED describe that argument. Once this is done, ! 1051: the variable CUM is suitable for analyzing the *following* argument ! 1052: with `FUNCTION_ARG', etc. (TYPE is null for libcalls where that ! 1053: information may not be available.) */ ! 1054: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ ! 1055: do { \ ! 1056: enum machine_mode __mode = (TYPE) ? TYPE_MODE (TYPE) : (MODE); \ ! 1057: if ((CUM & 1) \ ! 1058: && (__mode == DImode || __mode == DFmode \ ! 1059: || ((TYPE) && TYPE_ALIGN (TYPE) > BITS_PER_WORD))) \ ! 1060: CUM++; \ ! 1061: CUM += (((__mode != BLKmode) \ ! 1062: ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE)) \ ! 1063: + 3) / 4; \ ! 1064: } while (0) ! 1065: ! 1066: /* True if N is a possible register number for function argument passing. ! 1067: On the m88000, these are registers 2 through 9. */ ! 1068: #define FUNCTION_ARG_REGNO_P(N) ((N) <= 9 && (N) >= 2) ! 1069: ! 1070: /* A C expression which determines whether, and in which direction, ! 1071: to pad out an argument with extra space. The value should be of ! 1072: type `enum direction': either `upward' to pad above the argument, ! 1073: `downward' to pad below, or `none' to inhibit padding. ! 1074: ! 1075: This macro does not control the *amount* of padding; that is always ! 1076: just enough to reach the next multiple of `FUNCTION_ARG_BOUNDARY'. */ ! 1077: #define FUNCTION_ARG_PADDING(MODE, TYPE) \ ! 1078: ((MODE) == BLKmode \ ! 1079: || ((TYPE) && (TREE_CODE (TYPE) == RECORD_TYPE \ ! 1080: || TREE_CODE (TYPE) == UNION_TYPE)) \ ! 1081: ? upward : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY ? downward : none) ! 1082: ! 1083: /* If defined, a C expression that gives the alignment boundary, in bits, ! 1084: of an argument with the specified mode and type. If it is not defined, ! 1085: `PARM_BOUNDARY' is used for all arguments. */ ! 1086: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ ! 1087: (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_SIZE (MODE)) <= PARM_BOUNDARY \ ! 1088: ? PARM_BOUNDARY : 2 * PARM_BOUNDARY) ! 1089: ! 1090: /* Generate necessary RTL for __builtin_saveregs(). ! 1091: ARGLIST is the argument list; see expr.c. */ ! 1092: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST) m88k_builtin_saveregs (ARGLIST) ! 1093: ! 1094: /* Generate the assembly code for function entry. */ ! 1095: #define FUNCTION_PROLOGUE(FILE, SIZE) m88k_begin_prologue(FILE, SIZE) ! 1096: ! 1097: /* Perform special actions at the point where the prologue ends. */ ! 1098: #define FUNCTION_END_PROLOGUE(FILE) m88k_end_prologue(FILE) ! 1099: ! 1100: /* Output assembler code to FILE to increment profiler label # LABELNO ! 1101: for profiling a function entry. Redefined in m88kv3.h, m88kv4.h and ! 1102: m88kdgux.h. */ ! 1103: #define FUNCTION_PROFILER(FILE, LABELNO) \ ! 1104: output_function_profiler (FILE, LABELNO, "mcount", 1) ! 1105: ! 1106: /* Maximum length in instructions of the code output by FUNCTION_PROFILER. */ ! 1107: #define FUNCTION_PROFILER_LENGTH (5+3+1+5) ! 1108: ! 1109: /* Output assembler code to FILE to initialize basic-block profiling for ! 1110: the current module. LABELNO is unique to each instance. */ ! 1111: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO) \ ! 1112: output_function_block_profiler (FILE, LABELNO) ! 1113: ! 1114: /* Maximum length in instructions of the code output by ! 1115: FUNCTION_BLOCK_PROFILER. */ ! 1116: #define FUNCTION_BLOCK_PROFILER_LENGTH (3+5+2+5) ! 1117: ! 1118: /* Output assembler code to FILE to increment the count associated with ! 1119: the basic block number BLOCKNO. */ ! 1120: #define BLOCK_PROFILER(FILE, BLOCKNO) output_block_profiler (FILE, BLOCKNO) ! 1121: ! 1122: /* Maximum length in instructions of the code output by BLOCK_PROFILER. */ ! 1123: #define BLOCK_PROFILER_LENGTH 4 ! 1124: ! 1125: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, ! 1126: the stack pointer does not matter. The value is tested only in ! 1127: functions that have frame pointers. ! 1128: No definition is equivalent to always zero. */ ! 1129: #define EXIT_IGNORE_STACK (1) ! 1130: ! 1131: /* Generate the assembly code for function exit. */ ! 1132: #define FUNCTION_EPILOGUE(FILE, SIZE) m88k_end_epilogue(FILE, SIZE) ! 1133: ! 1134: /* Perform special actions at the point where the epilogue begins. */ ! 1135: #define FUNCTION_BEGIN_EPILOGUE(FILE) m88k_begin_epilogue(FILE) ! 1136: ! 1137: /* Value should be nonzero if functions must have frame pointers. ! 1138: Zero means the frame pointer need not be set up (and parms ! 1139: may be accessed via the stack pointer) in functions that seem suitable. ! 1140: This is computed in `reload', in reload1.c. */ ! 1141: #define FRAME_POINTER_REQUIRED \ ! 1142: (frame_pointer_needed \ ! 1143: || (write_symbols != NO_DEBUG && !TARGET_OCS_FRAME_POSITION)) ! 1144: ! 1145: /* Definitions for register eliminations. ! 1146: ! 1147: We have two registers that can be eliminated on the m88k. First, the ! 1148: frame pointer register can often be eliminated in favor of the stack ! 1149: pointer register. Secondly, the argument pointer register can always be ! 1150: eliminated; it is replaced with either the stack or frame pointer. */ ! 1151: ! 1152: /* This is an array of structures. Each structure initializes one pair ! 1153: of eliminable registers. The "from" register number is given first, ! 1154: followed by "to". Eliminations of the same "from" register are listed ! 1155: in order of preference. */ ! 1156: #define ELIMINABLE_REGS \ ! 1157: {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ ! 1158: { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ ! 1159: { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} ! 1160: ! 1161: /* Given FROM and TO register numbers, say whether this elimination ! 1162: is allowed. */ ! 1163: #define CAN_ELIMINATE(FROM, TO) \ ! 1164: (!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED)) ! 1165: ! 1166: /* Define the offset between two registers, one to be eliminated, and the other ! 1167: its replacement, at the start of a routine. */ ! 1168: #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ ! 1169: { m88k_layout_frame (); \ ! 1170: if ((FROM) == FRAME_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ ! 1171: (OFFSET) = m88k_fp_offset; \ ! 1172: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == FRAME_POINTER_REGNUM) \ ! 1173: (OFFSET) = m88k_stack_size - m88k_fp_offset; \ ! 1174: else if ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM) \ ! 1175: (OFFSET) = m88k_stack_size; \ ! 1176: else \ ! 1177: abort (); \ ! 1178: } ! 1179: ! 1180: /*** Trampolines for Nested Functions ***/ ! 1181: ! 1182: /* Output assembler code for a block containing the constant parts ! 1183: of a trampoline, leaving space for the variable parts. ! 1184: ! 1185: This block is placed on the stack and filled in. It is aligned ! 1186: 0 mod 128 and those portions that are executed are constant. ! 1187: This should work for instruction caches that have cache lines up ! 1188: to the aligned amount (128 is arbitrary), provided no other code ! 1189: producer is attempting to play the same game. This of course is ! 1190: in violation of any number of 88open standards. */ ! 1191: ! 1192: #define TRAMPOLINE_TEMPLATE(FILE) \ ! 1193: { \ ! 1194: char buf[256]; \ ! 1195: static int labelno = 0; \ ! 1196: labelno++; \ ! 1197: ASM_GENERATE_INTERNAL_LABEL (buf, "LTRMP", labelno); \ ! 1198: /* Save the return address (r1) in the static chain reg (r11). */ \ ! 1199: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[11], reg_names[1]); \ ! 1200: /* Locate this block; transfer to the next instruction. */ \ ! 1201: fprintf (FILE, "\tbsr\t %s\n", &buf[1]); \ ! 1202: ASM_OUTPUT_INTERNAL_LABEL (FILE, "LTRMP", labelno); \ ! 1203: /* Save r10; use it as the relative pointer; restore r1. */ \ ! 1204: fprintf (FILE, "\tst\t %s,%s,24\n", reg_names[10], reg_names[1]); \ ! 1205: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[10], reg_names[1]); \ ! 1206: fprintf (FILE, "\tor\t %s,%s,0\n", reg_names[1], reg_names[11]); \ ! 1207: /* Load the function's address and go there. */ \ ! 1208: fprintf (FILE, "\tld\t %s,%s,32\n", reg_names[11], reg_names[10]); \ ! 1209: fprintf (FILE, "\tjmp.n\t %s\n", reg_names[11]); \ ! 1210: /* Restore r10 and load the static chain register. */ \ ! 1211: fprintf (FILE, "\tld.d\t %s,%s,24\n", reg_names[10], reg_names[10]); \ ! 1212: /* Storage: r10 save area, static chain, function address. */ \ ! 1213: ASM_OUTPUT_INT (FILE, const0_rtx); \ ! 1214: ASM_OUTPUT_INT (FILE, const0_rtx); \ ! 1215: ASM_OUTPUT_INT (FILE, const0_rtx); \ ! 1216: } ! 1217: ! 1218: /* Length in units of the trampoline for entering a nested function. ! 1219: This is really two components. The first 32 bytes are fixed and ! 1220: must be copied; the last 12 bytes are just storage that's filled ! 1221: in later. So for allocation purposes, it's 32+12 bytes, but for ! 1222: initialization purposes, it's 32 bytes. */ ! 1223: ! 1224: #define TRAMPOLINE_SIZE (32+12) ! 1225: ! 1226: /* Alignment required for a trampoline. 128 is used to find the ! 1227: beginning of a line in the instruction cache and to allow for ! 1228: instruction cache lines of up to 128 bytes. */ ! 1229: ! 1230: #define TRAMPOLINE_ALIGNMENT 128 ! 1231: ! 1232: /* Emit RTL insns to initialize the variable parts of a trampoline. ! 1233: FNADDR is an RTX for the address of the function's pure code. ! 1234: CXT is an RTX for the static chain value for the function. */ ! 1235: ! 1236: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ ! 1237: { \ ! 1238: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 40)), FNADDR); \ ! 1239: emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 36)), CXT); \ ! 1240: } ! 1241: ! 1242: /*** Library Subroutine Names ***/ ! 1243: ! 1244: /* Define this macro if GNU CC should generate calls to the System V ! 1245: (and ANSI C) library functions `memcpy' and `memset' rather than ! 1246: the BSD functions `bcopy' and `bzero'. */ ! 1247: #define TARGET_MEM_FUNCTIONS ! 1248: ! 1249: /*** Addressing Modes ***/ ! 1250: ! 1251: #define EXTRA_CC_MODES CCEVENmode ! 1252: ! 1253: #define EXTRA_CC_NAMES "CCEVEN" ! 1254: ! 1255: #define SELECT_CC_MODE(OP,X,Y) CCmode ! 1256: ! 1257: /* #define HAVE_POST_INCREMENT */ ! 1258: /* #define HAVE_POST_DECREMENT */ ! 1259: ! 1260: /* #define HAVE_PRE_DECREMENT */ ! 1261: /* #define HAVE_PRE_INCREMENT */ ! 1262: ! 1263: /* Recognize any constant value that is a valid address. */ ! 1264: #define CONSTANT_ADDRESS_P(X) \ ! 1265: (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ ! 1266: || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \ ! 1267: || GET_CODE (X) == HIGH) ! 1268: ! 1269: /* Maximum number of registers that can appear in a valid memory address. */ ! 1270: #define MAX_REGS_PER_ADDRESS 2 ! 1271: ! 1272: /* The condition for memory shift insns. */ ! 1273: #define SCALED_ADDRESS_P(ADDR) \ ! 1274: (GET_CODE (ADDR) == PLUS \ ! 1275: && (GET_CODE (XEXP (ADDR, 0)) == MULT \ ! 1276: || GET_CODE (XEXP (ADDR, 1)) == MULT)) ! 1277: ! 1278: /* Can the reference to X be made short? */ ! 1279: #define SHORT_ADDRESS_P(X,TEMP) \ ! 1280: ((TEMP) = (GET_CODE (X) == CONST ? get_related_value (X) : X), \ ! 1281: ((TEMP) && GET_CODE (TEMP) == SYMBOL_REF && SYMBOL_REF_FLAG (TEMP))) ! 1282: ! 1283: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression ! 1284: that is a valid memory address for an instruction. ! 1285: The MODE argument is the machine mode for the MEM expression ! 1286: that wants to use this address. ! 1287: ! 1288: On the m88000, a legitimate address has the form REG, REG+REG, ! 1289: REG+SMALLINT, REG+(REG*modesize) (REG[REG]), or SMALLINT. ! 1290: ! 1291: The register elimination process should deal with the argument ! 1292: pointer and frame pointer changing to REG+SMALLINT. */ ! 1293: ! 1294: #define LEGITIMATE_INDEX_P(X, MODE) \ ! 1295: ((GET_CODE (X) == CONST_INT \ ! 1296: && SMALL_INT (X)) \ ! 1297: || (REG_P (X) \ ! 1298: && REG_OK_FOR_INDEX_P (X)) \ ! 1299: || (GET_CODE (X) == MULT \ ! 1300: && REG_P (XEXP (X, 0)) \ ! 1301: && REG_OK_FOR_INDEX_P (XEXP (X, 0)) \ ! 1302: && GET_CODE (XEXP (X, 1)) == CONST_INT \ ! 1303: && INTVAL (XEXP (X, 1)) == GET_MODE_SIZE (MODE))) ! 1304: ! 1305: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ ! 1306: { \ ! 1307: register rtx _x; \ ! 1308: if (REG_P (X)) \ ! 1309: { \ ! 1310: if (REG_OK_FOR_BASE_P (X)) \ ! 1311: goto ADDR; \ ! 1312: } \ ! 1313: else if (GET_CODE (X) == PLUS) \ ! 1314: { \ ! 1315: register rtx _x0 = XEXP (X, 0); \ ! 1316: register rtx _x1 = XEXP (X, 1); \ ! 1317: if ((flag_pic \ ! 1318: && _x0 == pic_offset_table_rtx \ ! 1319: && (flag_pic == 2 \ ! 1320: ? REG_P (_x1) \ ! 1321: : (GET_CODE (_x1) == SYMBOL_REF \ ! 1322: || GET_CODE (_x1) == LABEL_REF))) \ ! 1323: || (REG_P (_x0) \ ! 1324: && (REG_OK_FOR_BASE_P (_x0) \ ! 1325: && LEGITIMATE_INDEX_P (_x1, MODE))) \ ! 1326: || (REG_P (_x1) \ ! 1327: && (REG_OK_FOR_BASE_P (_x1) \ ! 1328: && LEGITIMATE_INDEX_P (_x0, MODE)))) \ ! 1329: goto ADDR; \ ! 1330: } \ ! 1331: else if (GET_CODE (X) == LO_SUM) \ ! 1332: { \ ! 1333: register rtx _x0 = XEXP (X, 0); \ ! 1334: register rtx _x1 = XEXP (X, 1); \ ! 1335: if (((REG_P (_x0) \ ! 1336: && REG_OK_FOR_BASE_P (_x0)) \ ! 1337: || (GET_CODE (_x0) == SUBREG \ ! 1338: && REG_P (SUBREG_REG (_x0)) \ ! 1339: && REG_OK_FOR_BASE_P (SUBREG_REG (_x0)))) \ ! 1340: && CONSTANT_P (_x1)) \ ! 1341: goto ADDR; \ ! 1342: } \ ! 1343: else if (GET_CODE (X) == CONST_INT \ ! 1344: && SMALL_INT (X)) \ ! 1345: goto ADDR; \ ! 1346: else if (SHORT_ADDRESS_P (X, _x)) \ ! 1347: goto ADDR; \ ! 1348: } ! 1349: ! 1350: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx ! 1351: and check its validity for a certain class. ! 1352: We have two alternate definitions for each of them. ! 1353: The usual definition accepts all pseudo regs; the other rejects ! 1354: them unless they have been allocated suitable hard regs. ! 1355: The symbol REG_OK_STRICT causes the latter definition to be used. ! 1356: ! 1357: Most source files want to accept pseudo regs in the hope that ! 1358: they will get allocated to the class that the insn wants them to be in. ! 1359: Source files for reload pass need to be strict. ! 1360: After reload, it makes no difference, since pseudo regs have ! 1361: been eliminated by then. */ ! 1362: ! 1363: #ifndef REG_OK_STRICT ! 1364: ! 1365: /* Nonzero if X is a hard reg that can be used as an index ! 1366: or if it is a pseudo reg. Not the argument pointer. */ ! 1367: #define REG_OK_FOR_INDEX_P(X) \ ! 1368: (!XRF_REGNO_P(REGNO (X))) ! 1369: /* Nonzero if X is a hard reg that can be used as a base reg ! 1370: or if it is a pseudo reg. */ ! 1371: #define REG_OK_FOR_BASE_P(X) (REG_OK_FOR_INDEX_P (X)) ! 1372: ! 1373: #else ! 1374: ! 1375: /* Nonzero if X is a hard reg that can be used as an index. */ ! 1376: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) ! 1377: /* Nonzero if X is a hard reg that can be used as a base reg. */ ! 1378: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) ! 1379: ! 1380: #endif ! 1381: ! 1382: /* Try machine-dependent ways of modifying an illegitimate address ! 1383: to be legitimate. If we find one, return the new, valid address. ! 1384: This macro is used in only one place: `memory_address' in explow.c. ! 1385: ! 1386: OLDX is the address as it was before break_out_memory_refs was called. ! 1387: In some cases it is useful to look at this to decide what needs to be done. ! 1388: ! 1389: MODE and WIN are passed so that this macro can use ! 1390: GO_IF_LEGITIMATE_ADDRESS. ! 1391: ! 1392: It is always safe for this macro to do nothing. It exists to recognize ! 1393: opportunities to optimize the output. */ ! 1394: ! 1395: /* On the m88000, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */ ! 1396: ! 1397: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ ! 1398: { \ ! 1399: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \ ! 1400: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \ ! 1401: copy_to_mode_reg (SImode, XEXP (X, 1))); \ ! 1402: if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \ ! 1403: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \ ! 1404: copy_to_mode_reg (SImode, XEXP (X, 0))); \ ! 1405: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \ ! 1406: (X) = gen_rtx (PLUS, SImode, XEXP (X, 1), \ ! 1407: force_operand (XEXP (X, 0), 0)); \ ! 1408: if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \ ! 1409: (X) = gen_rtx (PLUS, SImode, XEXP (X, 0), \ ! 1410: force_operand (XEXP (X, 1), 0)); \ ! 1411: if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \ ! 1412: || GET_CODE (X) == LABEL_REF) \ ! 1413: (X) = legitimize_address (flag_pic, X, 0, 0); \ ! 1414: if (memory_address_p (MODE, X)) \ ! 1415: goto WIN; } ! 1416: ! 1417: /* Go to LABEL if ADDR (a legitimate address expression) ! 1418: has an effect that depends on the machine mode it is used for. ! 1419: On the the m88000 this is never true. */ ! 1420: ! 1421: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) ! 1422: ! 1423: /* Nonzero if the constant value X is a legitimate general operand. ! 1424: It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ ! 1425: #define LEGITIMATE_CONSTANT_P(X) (1) ! 1426: ! 1427: /*** Condition Code Information ***/ ! 1428: ! 1429: /* C code for a data type which is used for declaring the `mdep' ! 1430: component of `cc_status'. It defaults to `int'. */ ! 1431: /* #define CC_STATUS_MDEP int */ ! 1432: ! 1433: /* A C expression to initialize the `mdep' field to "empty". */ ! 1434: /* #define CC_STATUS_MDEP_INIT (cc_status.mdep = 0) */ ! 1435: ! 1436: /* Macro to zap the normal portions of CC_STATUS, but leave the ! 1437: machine dependent parts (ie, literal synthesis) alone. */ ! 1438: /* #define CC_STATUS_INIT_NO_MDEP \ ! 1439: (cc_status.flags = 0, cc_status.value1 = 0, cc_status.value2 = 0) */ ! 1440: ! 1441: /* When using a register to hold the condition codes, the cc_status ! 1442: mechanism cannot be used. */ ! 1443: #define NOTICE_UPDATE_CC(EXP, INSN) (0) ! 1444: ! 1445: /*** Miscellaneous Parameters ***/ ! 1446: ! 1447: /* Define the codes that are matched by predicates in m88k.c. */ ! 1448: #define PREDICATE_CODES \ ! 1449: {"move_operand", {SUBREG, REG, CONST_INT, LO_SUM, MEM}}, \ ! 1450: {"call_address_operand", {SUBREG, REG, SYMBOL_REF, LABEL_REF, CONST}}, \ ! 1451: {"arith_operand", {SUBREG, REG, CONST_INT}}, \ ! 1452: {"arith5_operand", {SUBREG, REG, CONST_INT}}, \ ! 1453: {"arith32_operand", {SUBREG, REG, CONST_INT}}, \ ! 1454: {"arith64_operand", {SUBREG, REG, CONST_INT}}, \ ! 1455: {"int5_operand", {CONST_INT}}, \ ! 1456: {"int32_operand", {CONST_INT}}, \ ! 1457: {"add_operand", {SUBREG, REG, CONST_INT}}, \ ! 1458: {"reg_or_bbx_mask_operand", {SUBREG, REG, CONST_INT}}, \ ! 1459: {"real_or_0_operand", {SUBREG, REG, CONST_DOUBLE}}, \ ! 1460: {"reg_or_0_operand", {SUBREG, REG, CONST_INT}}, \ ! 1461: {"relop", {EQ, NE, LT, LE, GE, GT, LTU, LEU, GEU, GTU}}, \ ! 1462: {"even_relop", {EQ, LT, GT, LTU, GTU}}, \ ! 1463: {"odd_relop", { NE, LE, GE, LEU, GEU}}, \ ! 1464: {"partial_ccmode_register_operand", { SUBREG, REG}}, \ ! 1465: {"relop_no_unsigned", {EQ, NE, LT, LE, GE, GT}}, \ ! 1466: {"equality_op", {EQ, NE}}, \ ! 1467: {"pc_or_label_ref", {PC, LABEL_REF}}, ! 1468: ! 1469: /* The case table contains either words or branch instructions. This says ! 1470: which. We always claim that the vector is PC-relative. It is position ! 1471: independent when -fpic is used. */ ! 1472: #define CASE_VECTOR_INSNS (TARGET_88100 || flag_pic) ! 1473: ! 1474: /* An alias for a machine mode name. This is the machine mode that ! 1475: elements of a jump-table should have. */ ! 1476: #define CASE_VECTOR_MODE SImode ! 1477: ! 1478: /* Define this macro if jump-tables should contain relative addresses. */ ! 1479: #define CASE_VECTOR_PC_RELATIVE ! 1480: ! 1481: /* Define this if control falls through a `case' insn when the index ! 1482: value is out of range. This means the specified default-label is ! 1483: actually ignored by the `case' insn proper. */ ! 1484: /* #define CASE_DROPS_THROUGH */ ! 1485: ! 1486: /* Define this to be the smallest number of different values for which it ! 1487: is best to use a jump-table instead of a tree of conditional branches. ! 1488: The default is 4 for machines with a casesi instruction and 5 otherwise. ! 1489: The best 88110 number is around 7, though the exact number isn't yet ! 1490: known. A third alternative for the 88110 is to use a binary tree of ! 1491: bb1 instructions on bits 2/1/0 if the range is dense. This may not ! 1492: win very much though. */ ! 1493: #define CASE_VALUES_THRESHOLD (TARGET_88100 ? 4 : 7) ! 1494: ! 1495: /* Specify the tree operation to be used to convert reals to integers. */ ! 1496: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR ! 1497: ! 1498: /* This is the kind of divide that is easiest to do in the general case. */ ! 1499: #define EASY_DIV_EXPR TRUNC_DIV_EXPR ! 1500: ! 1501: /* Define this as 1 if `char' should by default be signed; else as 0. */ ! 1502: #define DEFAULT_SIGNED_CHAR 1 ! 1503: ! 1504: /* The 88open ABI says size_t is unsigned int. */ ! 1505: #define SIZE_TYPE "unsigned int" ! 1506: ! 1507: /* Allow and ignore #sccs directives */ ! 1508: #define SCCS_DIRECTIVE ! 1509: ! 1510: /* Handle #pragma pack and sometimes #pragma weak. */ ! 1511: #define HANDLE_SYSV_PRAGMA ! 1512: ! 1513: /* Tell when to handle #pragma weak. This is only done for V.4. */ ! 1514: #define HANDLE_PRAGMA_WEAK TARGET_SVR4 ! 1515: ! 1516: /* Max number of bytes we can move from memory to memory ! 1517: in one reasonably fast instruction. */ ! 1518: #define MOVE_MAX 8 ! 1519: ! 1520: /* Define if operations between registers always perform the operation ! 1521: on the full register even if a narrower mode is specified. */ ! 1522: #define WORD_REGISTER_OPERATIONS ! 1523: ! 1524: /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD ! 1525: will either zero-extend or sign-extend. The value of this macro should ! 1526: be the code that says which one of the two operations is implicitly ! 1527: done, NIL if none. */ ! 1528: #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND ! 1529: ! 1530: /* Zero if access to memory by bytes is faster. */ ! 1531: #define SLOW_BYTE_ACCESS 1 ! 1532: ! 1533: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits ! 1534: is done just by pretending it is already truncated. */ ! 1535: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 ! 1536: ! 1537: /* Define this if addresses of constant functions ! 1538: shouldn't be put through pseudo regs where they can be cse'd. ! 1539: Desirable on machines where ordinary constants are expensive ! 1540: but a CALL with constant address is cheap. */ ! 1541: #define NO_FUNCTION_CSE ! 1542: ! 1543: /* Define this macro if an argument declared as `char' or ! 1544: `short' in a prototype should actually be passed as an ! 1545: `int'. In addition to avoiding errors in certain cases of ! 1546: mismatch, it also makes for better code on certain machines. */ ! 1547: #define PROMOTE_PROTOTYPES ! 1548: ! 1549: /* Define this macro if a float function always returns float ! 1550: (even in traditional mode). Redefined in m88kluna.h. */ ! 1551: #define TRADITIONAL_RETURN_FLOAT ! 1552: ! 1553: /* We assume that the store-condition-codes instructions store 0 for false ! 1554: and some other value for true. This is the value stored for true. */ ! 1555: #define STORE_FLAG_VALUE -1 ! 1556: ! 1557: /* Specify the machine mode that pointers have. ! 1558: After generation of rtl, the compiler makes no further distinction ! 1559: between pointers and any other objects of this machine mode. */ ! 1560: #define Pmode SImode ! 1561: ! 1562: /* A function address in a call instruction ! 1563: is a word address (for indexing purposes) ! 1564: so give the MEM rtx word mode. */ ! 1565: #define FUNCTION_MODE SImode ! 1566: ! 1567: /* A barrier will be aligned so account for the possible expansion. ! 1568: A volatile load may be preceded by a serializing instruction. ! 1569: Account for profiling code output at NOTE_INSN_PROLOGUE_END. ! 1570: Account for block profiling code at basic block boundaries. */ ! 1571: #define ADJUST_INSN_LENGTH(RTX, LENGTH) \ ! 1572: if (GET_CODE (RTX) == BARRIER \ ! 1573: || (TARGET_SERIALIZE_VOLATILE \ ! 1574: && GET_CODE (RTX) == INSN \ ! 1575: && GET_CODE (PATTERN (RTX)) == SET \ ! 1576: && ((GET_CODE (SET_SRC (PATTERN (RTX))) == MEM \ ! 1577: && MEM_VOLATILE_P (SET_SRC (PATTERN (RTX))))))) \ ! 1578: LENGTH += 1; \ ! 1579: else if (GET_CODE (RTX) == NOTE \ ! 1580: && NOTE_LINE_NUMBER (RTX) == NOTE_INSN_PROLOGUE_END) \ ! 1581: { \ ! 1582: if (profile_block_flag) \ ! 1583: LENGTH += FUNCTION_BLOCK_PROFILER_LENGTH; \ ! 1584: if (profile_flag) \ ! 1585: LENGTH += (FUNCTION_PROFILER_LENGTH + REG_PUSH_LENGTH \ ! 1586: + REG_POP_LENGTH); \ ! 1587: } \ ! 1588: else if (profile_block_flag \ ! 1589: && (GET_CODE (RTX) == CODE_LABEL \ ! 1590: || GET_CODE (RTX) == JUMP_INSN \ ! 1591: || (GET_CODE (RTX) == INSN \ ! 1592: && GET_CODE (PATTERN (RTX)) == SEQUENCE \ ! 1593: && GET_CODE (XVECEXP (PATTERN (RTX), 0, 0)) == JUMP_INSN)))\ ! 1594: LENGTH += BLOCK_PROFILER_LENGTH; ! 1595: ! 1596: /* Track the state of the last volatile memory reference. Clear the ! 1597: state with CC_STATUS_INIT for now. */ ! 1598: #define CC_STATUS_INIT m88k_volatile_code = '\0' ! 1599: ! 1600: /* Compute the cost of computing a constant rtl expression RTX ! 1601: whose rtx-code is CODE. The body of this macro is a portion ! 1602: of a switch statement. If the code is computed here, ! 1603: return it with a return statement. Otherwise, break from the switch. ! 1604: ! 1605: We assume that any 16 bit integer can easily be recreated, so we ! 1606: indicate 0 cost, in an attempt to get GCC not to optimize things ! 1607: like comparison against a constant. ! 1608: ! 1609: The cost of CONST_DOUBLE is zero (if it can be placed in an insn, it ! 1610: is as good as a register; since it can't be placed in any insn, it ! 1611: won't do anything in cse, but it will cause expand_binop to pass the ! 1612: constant to the define_expands). */ ! 1613: #define CONST_COSTS(RTX,CODE,OUTER_CODE) \ ! 1614: case CONST_INT: \ ! 1615: if (SMALL_INT (RTX)) \ ! 1616: return 0; \ ! 1617: else if (SMALL_INTVAL (- INTVAL (RTX))) \ ! 1618: return 2; \ ! 1619: else if (classify_integer (SImode, INTVAL (RTX)) != m88k_oru_or) \ ! 1620: return 4; \ ! 1621: return 7; \ ! 1622: case HIGH: \ ! 1623: return 2; \ ! 1624: case CONST: \ ! 1625: case LABEL_REF: \ ! 1626: case SYMBOL_REF: \ ! 1627: if (flag_pic) \ ! 1628: return (flag_pic == 2) ? 11 : 8; \ ! 1629: return 5; \ ! 1630: case CONST_DOUBLE: \ ! 1631: return 0; ! 1632: ! 1633: /* Provide the costs of an addressing mode that contains ADDR. ! 1634: If ADDR is not a valid address, its cost is irrelevant. ! 1635: REG+REG is made slightly more expensive because it might keep ! 1636: a register live for longer than we might like. */ ! 1637: #define ADDRESS_COST(ADDR) \ ! 1638: (GET_CODE (ADDR) == REG ? 1 : \ ! 1639: GET_CODE (ADDR) == LO_SUM ? 1 : \ ! 1640: GET_CODE (ADDR) == HIGH ? 2 : \ ! 1641: GET_CODE (ADDR) == MULT ? 1 : \ ! 1642: GET_CODE (ADDR) != PLUS ? 4 : \ ! 1643: (REG_P (XEXP (ADDR, 0)) && REG_P (XEXP (ADDR, 1))) ? 2 : 1) ! 1644: ! 1645: /* Provide the costs of a rtl expression. This is in the body of a ! 1646: switch on CODE. */ ! 1647: #define RTX_COSTS(X,CODE,OUTER_CODE) \ ! 1648: case MEM: \ ! 1649: return COSTS_N_INSNS (2); \ ! 1650: case MULT: \ ! 1651: return COSTS_N_INSNS (3); \ ! 1652: case DIV: \ ! 1653: case UDIV: \ ! 1654: case MOD: \ ! 1655: case UMOD: \ ! 1656: return COSTS_N_INSNS (38); ! 1657: ! 1658: /* A C expressions returning the cost of moving data of MODE from a register ! 1659: to or from memory. This is more costly than between registers. */ ! 1660: #define MEMORY_MOVE_COST(MODE) 4 ! 1661: ! 1662: /* Provide the cost of a branch. Exact meaning under development. */ ! 1663: #define BRANCH_COST (TARGET_88100 ? 1 : 2) ! 1664: ! 1665: /* A C statement (sans semicolon) to update the integer variable COST ! 1666: based on the relationship between INSN that is dependent on ! 1667: DEP_INSN through the dependence LINK. The default is to make no ! 1668: adjustment to COST. On the m88k, ignore the cost of anti- and ! 1669: output-dependencies. On the m88100, a store can issue two cycles ! 1670: before the value (not the address) has finished computing. */ ! 1671: #define ADJUST_COST(INSN,LINK,DEP_INSN,COST) \ ! 1672: do { \ ! 1673: if (REG_NOTE_KIND (LINK) != 0) \ ! 1674: (COST) = 0; /* Anti or output dependence. */ \ ! 1675: else if (! TARGET_88100 \ ! 1676: && recog_memoized (INSN) >= 0 \ ! 1677: && get_attr_type (INSN) == TYPE_STORE \ ! 1678: && SET_SRC (PATTERN (INSN)) == SET_DEST (PATTERN (DEP_INSN))) \ ! 1679: (COST) -= 4; /* 88110 store reservation station. */ \ ! 1680: } while (0) ! 1681: ! 1682: /* Define this to be nonzero if the character `$' should be allowed ! 1683: by default in identifier names. */ ! 1684: #define DOLLARS_IN_IDENTIFIERS 1 ! 1685: ! 1686: /* Do not break .stabs pseudos into continuations. */ ! 1687: #define DBX_CONTIN_LENGTH 0 ! 1688: ! 1689: /*** Output of Assembler Code ***/ ! 1690: ! 1691: /* Control the assembler format that we output. */ ! 1692: ! 1693: /* Which assembler syntax. Redefined in m88kdgux.h. */ ! 1694: #define VERSION_0300_SYNTAX TARGET_SVR4 ! 1695: ! 1696: /* At some point, m88kv4.h will redefine this. */ ! 1697: #define VERSION_0400_SYNTAX 0 ! 1698: ! 1699: /* Allow pseudo-ops to be overridden. Override these in svr[34].h. */ ! 1700: #undef INT_ASM_OP ! 1701: #undef ASCII_DATA_ASM_OP ! 1702: #undef CONST_SECTION_ASM_OP ! 1703: #undef CTORS_SECTION_ASM_OP ! 1704: #undef DTORS_SECTION_ASM_OP ! 1705: #undef INIT_SECTION_ASM_OP ! 1706: #undef FINI_SECTION_ASM_OP ! 1707: #undef TYPE_ASM_OP ! 1708: #undef SIZE_ASM_OP ! 1709: #undef WEAK_ASM_OP ! 1710: #undef SET_ASM_OP ! 1711: #undef SKIP_ASM_OP ! 1712: #undef COMMON_ASM_OP ! 1713: #undef ALIGN_ASM_OP ! 1714: #undef IDENT_ASM_OP ! 1715: ! 1716: /* These are used in varasm.c as well. */ ! 1717: #define TEXT_SECTION_ASM_OP "text" ! 1718: #define DATA_SECTION_ASM_OP "data" ! 1719: ! 1720: /* Other sections. */ ! 1721: #define CONST_SECTION_ASM_OP (VERSION_0300_SYNTAX \ ! 1722: ? "section\t .rodata,\"a\"" \ ! 1723: : "section\t .rodata,\"x\"") ! 1724: #define TDESC_SECTION_ASM_OP (VERSION_0300_SYNTAX \ ! 1725: ? "section\t .tdesc,\"a\"" \ ! 1726: : "section\t .tdesc,\"x\"") ! 1727: ! 1728: /* These must be constant strings for crtstuff.c. */ ! 1729: #define CTORS_SECTION_ASM_OP "section\t .ctors,\"d\"" ! 1730: #define DTORS_SECTION_ASM_OP "section\t .dtors,\"d\"" ! 1731: #define INIT_SECTION_ASM_OP "section\t .init,\"x\"" ! 1732: #define FINI_SECTION_ASM_OP "section\t .fini,\"x\"" ! 1733: ! 1734: /* These are pretty much common to all assemblers. */ ! 1735: #define IDENT_ASM_OP "ident" ! 1736: #define FILE_ASM_OP "file" ! 1737: #define SECTION_ASM_OP "section" ! 1738: #define SET_ASM_OP "def" ! 1739: #define GLOBAL_ASM_OP "global" ! 1740: #define ALIGN_ASM_OP "align" ! 1741: #define SKIP_ASM_OP "zero" ! 1742: #define COMMON_ASM_OP "comm" ! 1743: #define BSS_ASM_OP "bss" ! 1744: #define FLOAT_ASM_OP "float" ! 1745: #define DOUBLE_ASM_OP "double" ! 1746: #define INT_ASM_OP "word" ! 1747: #define ASM_LONG INT_ASM_OP ! 1748: #define SHORT_ASM_OP "half" ! 1749: #define CHAR_ASM_OP "byte" ! 1750: #define ASCII_DATA_ASM_OP "string" ! 1751: ! 1752: /* These are particular to the global pool optimization. */ ! 1753: #define SBSS_ASM_OP "sbss" ! 1754: #define SCOMM_ASM_OP "scomm" ! 1755: #define SDATA_SECTION_ASM_OP "sdata" ! 1756: ! 1757: /* These are specific to PIC. */ ! 1758: #define TYPE_ASM_OP "type" ! 1759: #define SIZE_ASM_OP "size" ! 1760: #define WEAK_ASM_OP "weak" ! 1761: #ifndef AS_BUG_POUND_TYPE /* Faulty assemblers require @ rather than #. */ ! 1762: #undef TYPE_OPERAND_FMT ! 1763: #define TYPE_OPERAND_FMT "#%s" ! 1764: #endif ! 1765: ! 1766: /* These are specific to version 03.00 assembler syntax. */ ! 1767: #define INTERNAL_ASM_OP "local" ! 1768: #define VERSION_ASM_OP "version" ! 1769: #define UNALIGNED_SHORT_ASM_OP "uahalf" ! 1770: #define UNALIGNED_INT_ASM_OP "uaword" ! 1771: #define PUSHSECTION_ASM_OP "section" ! 1772: #define POPSECTION_ASM_OP "previous" ! 1773: ! 1774: /* These are specific to the version 04.00 assembler syntax. */ ! 1775: #define REQUIRES_88110_ASM_OP "requires_88110" ! 1776: ! 1777: /* Output any initial stuff to the assembly file. Always put out ! 1778: a file directive, even if not debugging. ! 1779: ! 1780: Immediately after putting out the file, put out a "sem.<value>" ! 1781: declaration. This should be harmless on other systems, and ! 1782: is used in DG/UX by the debuggers to supplement COFF. The ! 1783: fields in the integer value are as follows: ! 1784: ! 1785: Bits Value Meaning ! 1786: ---- ----- ------- ! 1787: 0-1 0 No information about stack locations ! 1788: 1 Auto/param locations are based on r30 ! 1789: 2 Auto/param locations are based on CFA ! 1790: ! 1791: 3-2 0 No information on dimension order ! 1792: 1 Array dims in sym table matches source language ! 1793: 2 Array dims in sym table is in reverse order ! 1794: ! 1795: 5-4 0 No information about the case of global names ! 1796: 1 Global names appear in the symbol table as in the source ! 1797: 2 Global names have been converted to lower case ! 1798: 3 Global names have been converted to upper case. */ ! 1799: ! 1800: #ifdef SDB_DEBUGGING_INFO ! 1801: #define ASM_COFFSEM(FILE) \ ! 1802: if (write_symbols == SDB_DEBUG) \ ! 1803: { \ ! 1804: fprintf (FILE, "\nsem.%x:\t\t; %s\n", \ ! 1805: (((TARGET_OCS_FRAME_POSITION) ? 2 : 1) << 0) + (1 << 2) + (1 << 4),\ ! 1806: (TARGET_OCS_FRAME_POSITION) \ ! 1807: ? "frame is CFA, normal array dims, case unchanged" \ ! 1808: : "frame is r30, normal array dims, case unchanged"); \ ! 1809: } ! 1810: #else ! 1811: #define ASM_COFFSEM(FILE) ! 1812: #endif ! 1813: ! 1814: /* Output the first line of the assembly file. Redefined in m88kdgux.h. */ ! 1815: ! 1816: #define ASM_FIRST_LINE(FILE) \ ! 1817: do { \ ! 1818: if (m88k_version) \ ! 1819: fprintf (FILE, "\t%s\t \"%s\"\n", VERSION_ASM_OP, m88k_version); \ ! 1820: } while (0) ! 1821: ! 1822: /* Override svr[34].h. */ ! 1823: #undef ASM_FILE_START ! 1824: #define ASM_FILE_START(FILE) \ ! 1825: output_file_start (FILE, f_options, sizeof f_options / sizeof f_options[0], \ ! 1826: W_options, sizeof W_options / sizeof W_options[0]) ! 1827: ! 1828: #undef ASM_FILE_END ! 1829: ! 1830: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) \ ! 1831: do { fprintf (FILE, "\t%s\t ", FILE_ASM_OP); \ ! 1832: output_quoted_string (FILE, NAME); \ ! 1833: fprintf (FILE, "\n"); \ ! 1834: } while (0) ! 1835: ! 1836: #ifdef SDB_DEBUGGING_INFO ! 1837: #define ASM_OUTPUT_SOURCE_LINE(FILE, LINE) \ ! 1838: if (m88k_prologue_done) \ ! 1839: fprintf (FILE, "\n\tln\t %d\t\t\t\t; Real source line %d\n",\ ! 1840: LINE - sdb_begin_function_line, LINE) ! 1841: #endif ! 1842: ! 1843: /* Code to handle #ident directives. Override svr[34].h definition. */ ! 1844: #undef ASM_OUTPUT_IDENT ! 1845: #ifdef DBX_DEBUGGING_INFO ! 1846: #define ASM_OUTPUT_IDENT(FILE, NAME) ! 1847: #else ! 1848: #define ASM_OUTPUT_IDENT(FILE, NAME) \ ! 1849: output_ascii (FILE, IDENT_ASM_OP, 4000, NAME, strlen (NAME)); ! 1850: #endif ! 1851: ! 1852: /* Output to assembler file text saying following lines ! 1853: may contain character constants, extra white space, comments, etc. */ ! 1854: #define ASM_APP_ON "" ! 1855: ! 1856: /* Output to assembler file text saying following lines ! 1857: no longer contain unusual constructs. */ ! 1858: #define ASM_APP_OFF "" ! 1859: ! 1860: /* Format the assembly opcode so that the arguments are all aligned. ! 1861: The maximum instruction size is 8 characters (fxxx.xxx), so a tab and a ! 1862: space will do to align the output. Abandon the output if a `%' is ! 1863: encountered. */ ! 1864: #define ASM_OUTPUT_OPCODE(STREAM, PTR) \ ! 1865: { \ ! 1866: int ch; \ ! 1867: char *orig_ptr; \ ! 1868: \ ! 1869: for (orig_ptr = (PTR); \ ! 1870: (ch = *(PTR)) && ch != ' ' && ch != '\t' && ch != '\n' && ch != '%'; \ ! 1871: (PTR)++) \ ! 1872: putc (ch, STREAM); \ ! 1873: \ ! 1874: if (ch == ' ' && orig_ptr != (PTR) && (PTR) - orig_ptr < 8) \ ! 1875: putc ('\t', STREAM); \ ! 1876: } ! 1877: ! 1878: /* How to refer to registers in assembler output. ! 1879: This sequence is indexed by compiler's hard-register-number. ! 1880: Updated by OVERRIDE_OPTIONS to include the # for version 03.00 syntax. */ ! 1881: ! 1882: #define REGISTER_NAMES \ ! 1883: {"#r0"+1, "#r1"+1, "#r2"+1, "#r3"+1, "#r4"+1, "#r5"+1, "#r6"+1, "#r7"+1, \ ! 1884: "#r8"+1, "#r9"+1, "#r10"+1,"#r11"+1,"#r12"+1,"#r13"+1,"#r14"+1,"#r15"+1,\ ! 1885: "#r16"+1,"#r17"+1,"#r18"+1,"#r19"+1,"#r20"+1,"#r21"+1,"#r22"+1,"#r23"+1,\ ! 1886: "#r24"+1,"#r25"+1,"#r26"+1,"#r27"+1,"#r28"+1,"#r29"+1,"#r30"+1,"#r31"+1,\ ! 1887: "#x0"+1, "#x1"+1, "#x2"+1, "#x3"+1, "#x4"+1, "#x5"+1, "#x6"+1, "#x7"+1, \ ! 1888: "#x8"+1, "#x9"+1, "#x10"+1,"#x11"+1,"#x12"+1,"#x13"+1,"#x14"+1,"#x15"+1,\ ! 1889: "#x16"+1,"#x17"+1,"#x18"+1,"#x19"+1,"#x20"+1,"#x21"+1,"#x22"+1,"#x23"+1,\ ! 1890: "#x24"+1,"#x25"+1,"#x26"+1,"#x27"+1,"#x28"+1,"#x29"+1,"#x30"+1,"#x31"+1} ! 1891: ! 1892: /* Define additional names for use in asm clobbers and asm declarations. ! 1893: ! 1894: We define the fake Condition Code register as an alias for reg 0 (which ! 1895: is our `condition code' register), so that condition codes can easily ! 1896: be clobbered by an asm. The carry bit in the PSR is now used. */ ! 1897: ! 1898: #define ADDITIONAL_REGISTER_NAMES {"psr", 0, "cc", 0} ! 1899: ! 1900: /* How to renumber registers for dbx and gdb. */ ! 1901: #define DBX_REGISTER_NUMBER(REGNO) (REGNO) ! 1902: ! 1903: /* Tell when to declare ASM names. Override svr4.h to provide this hook. */ ! 1904: #undef DECLARE_ASM_NAME ! 1905: #define DECLARE_ASM_NAME TARGET_SVR4 ! 1906: ! 1907: /* Write the extra assembler code needed to declare a function properly. */ ! 1908: #undef ASM_DECLARE_FUNCTION_NAME ! 1909: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ ! 1910: do { \ ! 1911: if (DECLARE_ASM_NAME) \ ! 1912: { \ ! 1913: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ ! 1914: assemble_name (FILE, NAME); \ ! 1915: putc (',', FILE); \ ! 1916: fprintf (FILE, TYPE_OPERAND_FMT, "function"); \ ! 1917: putc ('\n', FILE); \ ! 1918: } \ ! 1919: ASM_OUTPUT_LABEL(FILE, NAME); \ ! 1920: } while (0) ! 1921: ! 1922: /* Write the extra assembler code needed to declare an object properly. */ ! 1923: #undef ASM_DECLARE_OBJECT_NAME ! 1924: #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ ! 1925: do { \ ! 1926: if (DECLARE_ASM_NAME) \ ! 1927: { \ ! 1928: fprintf (FILE, "\t%s\t ", TYPE_ASM_OP); \ ! 1929: assemble_name (FILE, NAME); \ ! 1930: putc (',', FILE); \ ! 1931: fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ ! 1932: putc ('\n', FILE); \ ! 1933: size_directive_output = 0; \ ! 1934: if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ ! 1935: { \ ! 1936: size_directive_output = 1; \ ! 1937: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ ! 1938: assemble_name (FILE, NAME); \ ! 1939: fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ ! 1940: } \ ! 1941: } \ ! 1942: ASM_OUTPUT_LABEL(FILE, NAME); \ ! 1943: } while (0) ! 1944: ! 1945: /* Output the size directive for a decl in rest_of_decl_compilation ! 1946: in the case where we did not do so before the initializer. ! 1947: Once we find the error_mark_node, we know that the value of ! 1948: size_directive_output was set ! 1949: by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ ! 1950: ! 1951: #undef ASM_FINISH_DECLARE_OBJECT ! 1952: #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ ! 1953: do { \ ! 1954: char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ ! 1955: if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ ! 1956: && DECLARE_ASM_NAME \ ! 1957: && ! AT_END && TOP_LEVEL \ ! 1958: && DECL_INITIAL (DECL) == error_mark_node \ ! 1959: && !size_directive_output) \ ! 1960: { \ ! 1961: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ ! 1962: assemble_name (FILE, name); \ ! 1963: fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \ ! 1964: } \ ! 1965: } while (0) ! 1966: ! 1967: /* This is how to declare the size of a function. */ ! 1968: #undef ASM_DECLARE_FUNCTION_SIZE ! 1969: #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ ! 1970: do { \ ! 1971: if (DECLARE_ASM_NAME) \ ! 1972: { \ ! 1973: if (!flag_inhibit_size_directive) \ ! 1974: { \ ! 1975: char label[256]; \ ! 1976: static int labelno = 0; \ ! 1977: labelno++; \ ! 1978: ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ ! 1979: ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno); \ ! 1980: fprintf (FILE, "\t%s\t ", SIZE_ASM_OP); \ ! 1981: assemble_name (FILE, (FNAME)); \ ! 1982: fprintf (FILE, ",%s-", &label[1]); \ ! 1983: assemble_name (FILE, (FNAME)); \ ! 1984: putc ('\n', FILE); \ ! 1985: } \ ! 1986: } \ ! 1987: } while (0) ! 1988: ! 1989: /* This is how to output the definition of a user-level label named NAME, ! 1990: such as the label on a static function or variable NAME. */ ! 1991: #define ASM_OUTPUT_LABEL(FILE,NAME) \ ! 1992: do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) ! 1993: ! 1994: /* This is how to output a command to make the user-level label named NAME ! 1995: defined for reference from other files. */ ! 1996: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \ ! 1997: do { \ ! 1998: fprintf (FILE, "\t%s\t ", GLOBAL_ASM_OP); \ ! 1999: assemble_name (FILE, NAME); \ ! 2000: putc ('\n', FILE); \ ! 2001: } while (0) ! 2002: ! 2003: /* This is how to output a reference to a user-level label named NAME. ! 2004: Override svr[34].h. */ ! 2005: #undef ASM_OUTPUT_LABELREF ! 2006: #define ASM_OUTPUT_LABELREF(FILE,NAME) \ ! 2007: { \ ! 2008: if (! TARGET_NO_UNDERSCORES && ! VERSION_0300_SYNTAX) \ ! 2009: fputc ('_', FILE); \ ! 2010: fputs (NAME, FILE); \ ! 2011: } ! 2012: ! 2013: /* This is how to output an internal numbered label where ! 2014: PREFIX is the class of label and NUM is the number within the class. ! 2015: For V.4, labels use `.' rather than `@'. */ ! 2016: ! 2017: #undef ASM_OUTPUT_INTERNAL_LABEL ! 2018: #ifdef AS_BUG_DOT_LABELS /* The assembler requires a declaration of local. */ ! 2019: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ ! 2020: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n\t%s\t .%s%d\n" : "@%s%d:\n", \ ! 2021: PREFIX, NUM, INTERNAL_ASM_OP, PREFIX, NUM) ! 2022: #else ! 2023: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ ! 2024: fprintf (FILE, VERSION_0300_SYNTAX ? ".%s%d:\n" : "@%s%d:\n", PREFIX, NUM) ! 2025: #endif /* AS_BUG_DOT_LABELS */ ! 2026: ! 2027: /* This is how to store into the string LABEL ! 2028: the symbol_ref name of an internal numbered label where ! 2029: PREFIX is the class of label and NUM is the number within the class. ! 2030: This is suitable for output with `assemble_name'. This must agree ! 2031: with ASM_OUTPUT_INTERNAL_LABEL above, except for being prefixed ! 2032: with an `*'. */ ! 2033: ! 2034: #undef ASM_GENERATE_INTERNAL_LABEL ! 2035: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ ! 2036: sprintf (LABEL, VERSION_0300_SYNTAX ? "*.%s%d" : "*@%s%d", PREFIX, NUM) ! 2037: ! 2038: /* Internal macro to get a single precision floating point value into ! 2039: an int, so we can print it's value in hex. */ ! 2040: #define FLOAT_TO_INT_INTERNAL( FVALUE, IVALUE ) \ ! 2041: { union { \ ! 2042: REAL_VALUE_TYPE d; \ ! 2043: struct { \ ! 2044: unsigned sign : 1; \ ! 2045: unsigned exponent1 : 1; \ ! 2046: unsigned exponent2 : 3; \ ! 2047: unsigned exponent3 : 7; \ ! 2048: unsigned mantissa1 : 20; \ ! 2049: unsigned mantissa2 : 3; \ ! 2050: unsigned mantissa3 : 29; \ ! 2051: } s; \ ! 2052: } _u; \ ! 2053: \ ! 2054: union { \ ! 2055: int i; \ ! 2056: struct { \ ! 2057: unsigned sign : 1; \ ! 2058: unsigned exponent1 : 1; \ ! 2059: unsigned exponent3 : 7; \ ! 2060: unsigned mantissa1 : 20; \ ! 2061: unsigned mantissa2 : 3; \ ! 2062: } s; \ ! 2063: } _u2; \ ! 2064: \ ! 2065: _u.d = REAL_VALUE_TRUNCATE (SFmode, FVALUE); \ ! 2066: _u2.s.sign = _u.s.sign; \ ! 2067: _u2.s.exponent1 = _u.s.exponent1; \ ! 2068: _u2.s.exponent3 = _u.s.exponent3; \ ! 2069: _u2.s.mantissa1 = _u.s.mantissa1; \ ! 2070: _u2.s.mantissa2 = _u.s.mantissa2; \ ! 2071: IVALUE = _u2.i; \ ! 2072: } ! 2073: ! 2074: /* This is how to output an assembler line defining a `double' constant. ! 2075: Use "word" pseudos to avoid printing NaNs, infinity, etc. */ ! 2076: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 2077: do { \ ! 2078: union { REAL_VALUE_TYPE d; long l[2]; } x; \ ! 2079: x.d = (VALUE); \ ! 2080: fprintf (FILE, "\t%s\t 0x%.8x, 0x%.8x\n", INT_ASM_OP, \ ! 2081: x.l[0], x.l[1]); \ ! 2082: } while (0) ! 2083: ! 2084: /* This is how to output an assembler line defining a `float' constant. */ ! 2085: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 2086: do { \ ! 2087: int i; \ ! 2088: FLOAT_TO_INT_INTERNAL (VALUE, i); \ ! 2089: fprintf (FILE, "\t%s\t 0x%.8x\n", INT_ASM_OP, i); \ ! 2090: } while (0) ! 2091: ! 2092: /* Likewise for `int', `short', and `char' constants. */ ! 2093: #define ASM_OUTPUT_INT(FILE,VALUE) \ ! 2094: ( fprintf (FILE, "\t%s\t ", INT_ASM_OP), \ ! 2095: output_addr_const (FILE, (VALUE)), \ ! 2096: fprintf (FILE, "\n")) ! 2097: ! 2098: #define ASM_OUTPUT_SHORT(FILE,VALUE) \ ! 2099: ( fprintf (FILE, "\t%s\t ", SHORT_ASM_OP), \ ! 2100: output_addr_const (FILE, (VALUE)), \ ! 2101: fprintf (FILE, "\n")) ! 2102: ! 2103: #define ASM_OUTPUT_CHAR(FILE,VALUE) \ ! 2104: ( fprintf (FILE, "\t%s\t ", CHAR_ASM_OP), \ ! 2105: output_addr_const (FILE, (VALUE)), \ ! 2106: fprintf (FILE, "\n")) ! 2107: ! 2108: /* This is how to output an assembler line for a numeric constant byte. */ ! 2109: #define ASM_OUTPUT_BYTE(FILE,VALUE) \ ! 2110: fprintf (FILE, "\t%s\t 0x%x\n", CHAR_ASM_OP, (VALUE)) ! 2111: ! 2112: /* The single-byte pseudo-op is the default. Override svr[34].h. */ ! 2113: #undef ASM_BYTE_OP ! 2114: #define ASM_BYTE_OP "byte" ! 2115: #undef ASM_OUTPUT_ASCII ! 2116: #define ASM_OUTPUT_ASCII(FILE, P, SIZE) \ ! 2117: output_ascii (FILE, ASCII_DATA_ASM_OP, 48, P, SIZE) ! 2118: ! 2119: /* Override svr4.h. Change to the readonly data section for a table of ! 2120: addresses. final_scan_insn changes back to the text section. */ ! 2121: #undef ASM_OUTPUT_CASE_LABEL ! 2122: #define ASM_OUTPUT_CASE_LABEL(FILE, PREFIX, NUM, TABLE) \ ! 2123: do { \ ! 2124: if (! CASE_VECTOR_INSNS) \ ! 2125: { \ ! 2126: readonly_data_section (); \ ! 2127: ASM_OUTPUT_ALIGN (FILE, 2); \ ! 2128: } \ ! 2129: ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); \ ! 2130: } while (0) ! 2131: ! 2132: /* Epilogue for case labels. This jump instruction is called by casesi ! 2133: to transfer to the appropriate branch instruction within the table. ! 2134: The label `@L<n>e' is coined to mark the end of the table. */ ! 2135: #define ASM_OUTPUT_CASE_END(FILE, NUM, TABLE) \ ! 2136: do { \ ! 2137: if (CASE_VECTOR_INSNS) \ ! 2138: { \ ! 2139: char label[256]; \ ! 2140: ASM_GENERATE_INTERNAL_LABEL (label, "L", NUM); \ ! 2141: fprintf (FILE, "%se:\n", &label[1]); \ ! 2142: if (! flag_delayed_branch) \ ! 2143: fprintf (FILE, "\tlda\t %s,%s[%s]\n", reg_names[1], \ ! 2144: reg_names[1], reg_names[m88k_case_index]); \ ! 2145: fprintf (FILE, "\tjmp\t %s\n", reg_names[1]); \ ! 2146: } \ ! 2147: } while (0) ! 2148: ! 2149: /* This is how to output an element of a case-vector that is absolute. */ ! 2150: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ ! 2151: do { \ ! 2152: char buffer[256]; \ ! 2153: ASM_GENERATE_INTERNAL_LABEL (buffer, "L", VALUE); \ ! 2154: fprintf (FILE, CASE_VECTOR_INSNS ? "\tbr\t %s\n" : "\tword\t %s\n", \ ! 2155: &buffer[1]); \ ! 2156: } while (0) ! 2157: ! 2158: /* This is how to output an element of a case-vector that is relative. */ ! 2159: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \ ! 2160: ASM_OUTPUT_ADDR_VEC_ELT (FILE, VALUE) ! 2161: ! 2162: /* This is how to output an assembler line ! 2163: that says to advance the location counter ! 2164: to a multiple of 2**LOG bytes. */ ! 2165: #define ASM_OUTPUT_ALIGN(FILE,LOG) \ ! 2166: if ((LOG) != 0) \ ! 2167: fprintf (FILE, "\t%s\t %d\n", ALIGN_ASM_OP, 1<<(LOG)) ! 2168: ! 2169: /* On the m88100, align the text address to half a cache boundary when it ! 2170: can only be reached by jumping. Pack code tightly when compiling ! 2171: crtstuff.c. */ ! 2172: #define ASM_OUTPUT_ALIGN_CODE(FILE) \ ! 2173: ASM_OUTPUT_ALIGN (FILE, \ ! 2174: (TARGET_88100 && !flag_inhibit_size_directive ? 3 : 2)) ! 2175: ! 2176: /* Override svr[34].h. */ ! 2177: #undef ASM_OUTPUT_SKIP ! 2178: #define ASM_OUTPUT_SKIP(FILE,SIZE) \ ! 2179: fprintf (FILE, "\t%s\t %u\n", SKIP_ASM_OP, (SIZE)) ! 2180: ! 2181: /* Override svr4.h. */ ! 2182: #undef ASM_OUTPUT_EXTERNAL_LIBCALL ! 2183: ! 2184: /* This says how to output an assembler line to define a global common ! 2185: symbol. Size can be zero for the unusual case of a `struct { int : 0; }'. ! 2186: Override svr[34].h. */ ! 2187: #undef ASM_OUTPUT_COMMON ! 2188: #undef ASM_OUTPUT_ALIGNED_COMMON ! 2189: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ ! 2190: ( fprintf ((FILE), "\t%s\t ", \ ! 2191: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SCOMM_ASM_OP : COMMON_ASM_OP), \ ! 2192: assemble_name ((FILE), (NAME)), \ ! 2193: fprintf ((FILE), ",%u\n", (SIZE) ? (SIZE) : 1)) ! 2194: ! 2195: /* This says how to output an assembler line to define a local common ! 2196: symbol. Override svr[34].h. */ ! 2197: #undef ASM_OUTPUT_LOCAL ! 2198: #undef ASM_OUTPUT_ALIGNED_LOCAL ! 2199: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ ! 2200: ( fprintf ((FILE), "\t%s\t ", \ ! 2201: ((SIZE) ? (SIZE) : 1) <= m88k_gp_threshold ? SBSS_ASM_OP : BSS_ASM_OP), \ ! 2202: assemble_name ((FILE), (NAME)), \ ! 2203: fprintf ((FILE), ",%u,%d\n", (SIZE) ? (SIZE) : 1, (SIZE) <= 4 ? 4 : 8)) ! 2204: ! 2205: /* Store in OUTPUT a string (made with alloca) containing ! 2206: an assembler-name for a local static variable named NAME. ! 2207: LABELNO is an integer which is different for each call. */ ! 2208: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ ! 2209: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ ! 2210: sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) ! 2211: ! 2212: /* This is how to output an insn to push a register on the stack. ! 2213: It need not be very fast code. */ ! 2214: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \ ! 2215: fprintf (FILE, "\tsubu\t %s,%s,%d\n\tst\t %s,%s,0\n", \ ! 2216: reg_names[STACK_POINTER_REGNUM], \ ! 2217: reg_names[STACK_POINTER_REGNUM], \ ! 2218: (STACK_BOUNDARY / BITS_PER_UNIT), \ ! 2219: reg_names[REGNO], \ ! 2220: reg_names[STACK_POINTER_REGNUM]) ! 2221: ! 2222: /* Length in instructions of the code output by ASM_OUTPUT_REG_PUSH. */ ! 2223: #define REG_PUSH_LENGTH 2 ! 2224: ! 2225: /* This is how to output an insn to pop a register from the stack. */ ! 2226: #define ASM_OUTPUT_REG_POP(FILE,REGNO) \ ! 2227: fprintf (FILE, "\tld\t %s,%s,0\n\taddu\t %s,%s,%d\n", \ ! 2228: reg_names[REGNO], \ ! 2229: reg_names[STACK_POINTER_REGNUM], \ ! 2230: reg_names[STACK_POINTER_REGNUM], \ ! 2231: reg_names[STACK_POINTER_REGNUM], \ ! 2232: (STACK_BOUNDARY / BITS_PER_UNIT)) ! 2233: ! 2234: /* Length in instructions of the code output by ASM_OUTPUT_REG_POP. */ ! 2235: #define REG_POP_LENGTH 2 ! 2236: ! 2237: /* Define the parentheses used to group arithmetic operations ! 2238: in assembler code. */ ! 2239: #define ASM_OPEN_PAREN "(" ! 2240: #define ASM_CLOSE_PAREN ")" ! 2241: ! 2242: /* Define results of standard character escape sequences. */ ! 2243: #define TARGET_BELL 007 ! 2244: #define TARGET_BS 010 ! 2245: #define TARGET_TAB 011 ! 2246: #define TARGET_NEWLINE 012 ! 2247: #define TARGET_VT 013 ! 2248: #define TARGET_FF 014 ! 2249: #define TARGET_CR 015 ! 2250: ! 2251: /* Macros to deal with OCS debug information */ ! 2252: ! 2253: #define OCS_START_PREFIX "Ltb" ! 2254: #define OCS_END_PREFIX "Lte" ! 2255: ! 2256: #define PUT_OCS_FUNCTION_START(FILE) \ ! 2257: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_START_PREFIX, m88k_function_number); } ! 2258: ! 2259: #define PUT_OCS_FUNCTION_END(FILE) \ ! 2260: { ASM_OUTPUT_INTERNAL_LABEL (FILE, OCS_END_PREFIX, m88k_function_number); } ! 2261: ! 2262: /* Macros for debug information */ ! 2263: #define DEBUGGER_AUTO_OFFSET(X) \ ! 2264: (m88k_debugger_offset (X, 0) \ ! 2265: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset)) ! 2266: ! 2267: #define DEBUGGER_ARG_OFFSET(OFFSET, X) \ ! 2268: (m88k_debugger_offset (X, OFFSET) \ ! 2269: + (TARGET_OCS_FRAME_POSITION ? 0 : m88k_stack_size - m88k_fp_offset)) ! 2270: ! 2271: /* Macros to deal with SDB debug information */ ! 2272: #ifdef SDB_DEBUGGING_INFO ! 2273: ! 2274: /* Output structure tag names even when it causes a forward reference. */ ! 2275: #define SDB_ALLOW_FORWARD_REFERENCES ! 2276: ! 2277: /* Print out extra debug information in the assembler file */ ! 2278: #define PUT_SDB_SCL(a) \ ! 2279: do { \ ! 2280: register int s = (a); \ ! 2281: register char *scl; \ ! 2282: switch (s) \ ! 2283: { \ ! 2284: case C_EFCN: scl = "end of function"; break; \ ! 2285: case C_NULL: scl = "NULL storage class"; break; \ ! 2286: case C_AUTO: scl = "automatic"; break; \ ! 2287: case C_EXT: scl = "external"; break; \ ! 2288: case C_STAT: scl = "static"; break; \ ! 2289: case C_REG: scl = "register"; break; \ ! 2290: case C_EXTDEF: scl = "external definition"; break; \ ! 2291: case C_LABEL: scl = "label"; break; \ ! 2292: case C_ULABEL: scl = "undefined label"; break; \ ! 2293: case C_MOS: scl = "structure member"; break; \ ! 2294: case C_ARG: scl = "argument"; break; \ ! 2295: case C_STRTAG: scl = "structure tag"; break; \ ! 2296: case C_MOU: scl = "union member"; break; \ ! 2297: case C_UNTAG: scl = "union tag"; break; \ ! 2298: case C_TPDEF: scl = "typedef"; break; \ ! 2299: case C_USTATIC: scl = "uninitialized static"; break; \ ! 2300: case C_ENTAG: scl = "enumeration tag"; break; \ ! 2301: case C_MOE: scl = "member of enumeration"; break; \ ! 2302: case C_REGPARM: scl = "register parameter"; break; \ ! 2303: case C_FIELD: scl = "bit field"; break; \ ! 2304: case C_BLOCK: scl = "block start/end"; break; \ ! 2305: case C_FCN: scl = "function start/end"; break; \ ! 2306: case C_EOS: scl = "end of structure"; break; \ ! 2307: case C_FILE: scl = "filename"; break; \ ! 2308: case C_LINE: scl = "line"; break; \ ! 2309: case C_ALIAS: scl = "duplicated tag"; break; \ ! 2310: case C_HIDDEN: scl = "hidden"; break; \ ! 2311: default: scl = "unknown"; break; \ ! 2312: } \ ! 2313: \ ! 2314: fprintf(asm_out_file, "\tscl\t %d\t\t\t\t; %s\n", s, scl); \ ! 2315: } while (0) ! 2316: ! 2317: #define PUT_SDB_TYPE(a) \ ! 2318: do { \ ! 2319: register int t = (a); \ ! 2320: static char buffer[100]; \ ! 2321: register char *p = buffer, *q; \ ! 2322: register int typ = t; \ ! 2323: register int i,d; \ ! 2324: \ ! 2325: for (i = 0; i <= 5; i++) \ ! 2326: { \ ! 2327: switch ((typ >> ((i*N_TSHIFT) + N_BTSHFT)) & 03) \ ! 2328: { \ ! 2329: case DT_PTR: \ ! 2330: strcpy (p, "ptr to "); \ ! 2331: p += sizeof("ptr to"); \ ! 2332: break; \ ! 2333: \ ! 2334: case DT_ARY: \ ! 2335: strcpy (p, "array of "); \ ! 2336: p += sizeof("array of"); \ ! 2337: break; \ ! 2338: \ ! 2339: case DT_FCN: \ ! 2340: strcpy (p, "func ret "); \ ! 2341: p += sizeof("func ret"); \ ! 2342: break; \ ! 2343: } \ ! 2344: } \ ! 2345: \ ! 2346: switch (typ & N_BTMASK) \ ! 2347: { \ ! 2348: case T_NULL: q = "<no type>"; break; \ ! 2349: case T_CHAR: q = "char"; break; \ ! 2350: case T_SHORT: q = "short"; break; \ ! 2351: case T_INT: q = "int"; break; \ ! 2352: case T_LONG: q = "long"; break; \ ! 2353: case T_FLOAT: q = "float"; break; \ ! 2354: case T_DOUBLE: q = "double"; break; \ ! 2355: case T_STRUCT: q = "struct"; break; \ ! 2356: case T_UNION: q = "union"; break; \ ! 2357: case T_ENUM: q = "enum"; break; \ ! 2358: case T_MOE: q = "enum member"; break; \ ! 2359: case T_UCHAR: q = "unsigned char"; break; \ ! 2360: case T_USHORT: q = "unsigned short"; break; \ ! 2361: case T_UINT: q = "unsigned int"; break; \ ! 2362: case T_ULONG: q = "unsigned long"; break; \ ! 2363: default: q = "void"; break; \ ! 2364: } \ ! 2365: \ ! 2366: strcpy (p, q); \ ! 2367: fprintf(asm_out_file, "\ttype\t %d\t\t\t\t; %s\n", \ ! 2368: t, buffer); \ ! 2369: } while (0) ! 2370: ! 2371: #define PUT_SDB_INT_VAL(a) \ ! 2372: fprintf (asm_out_file, "\tval\t %d\n", (a)) ! 2373: ! 2374: #define PUT_SDB_VAL(a) \ ! 2375: ( fprintf (asm_out_file, "\tval\t "), \ ! 2376: output_addr_const (asm_out_file, (a)), \ ! 2377: fputc ('\n', asm_out_file)) ! 2378: ! 2379: #define PUT_SDB_DEF(a) \ ! 2380: do { fprintf (asm_out_file, "\tsdef\t "); \ ! 2381: ASM_OUTPUT_LABELREF (asm_out_file, a); \ ! 2382: fputc ('\n', asm_out_file); \ ! 2383: } while (0) ! 2384: ! 2385: #define PUT_SDB_PLAIN_DEF(a) \ ! 2386: fprintf(asm_out_file,"\tsdef\t .%s\n", a) ! 2387: ! 2388: /* Simply and endef now. */ ! 2389: #define PUT_SDB_ENDEF \ ! 2390: fputs("\tendef\n\n", asm_out_file) ! 2391: ! 2392: #define PUT_SDB_SIZE(a) \ ! 2393: fprintf (asm_out_file, "\tsize\t %d\n", (a)) ! 2394: ! 2395: /* Max dimensions to store for debug information (limited by COFF). */ ! 2396: #define SDB_MAX_DIM 6 ! 2397: ! 2398: /* New method for dim operations. */ ! 2399: #define PUT_SDB_START_DIM \ ! 2400: fputs("\tdim\t ", asm_out_file) ! 2401: ! 2402: /* How to end the DIM sequence. */ ! 2403: #define PUT_SDB_LAST_DIM(a) \ ! 2404: fprintf(asm_out_file, "%d\n", a) ! 2405: ! 2406: #define PUT_SDB_TAG(a) \ ! 2407: do { \ ! 2408: fprintf (asm_out_file, "\ttag\t "); \ ! 2409: ASM_OUTPUT_LABELREF (asm_out_file, a); \ ! 2410: fputc ('\n', asm_out_file); \ ! 2411: } while( 0 ) ! 2412: ! 2413: #define PUT_SDB_BLOCK_OR_FUNCTION(NAME, SCL, LINE) \ ! 2414: do { \ ! 2415: fprintf (asm_out_file, "\n\tsdef\t %s\n\tval\t .\n", \ ! 2416: NAME); \ ! 2417: PUT_SDB_SCL( SCL ); \ ! 2418: fprintf (asm_out_file, "\tline\t %d\n\tendef\n\n", \ ! 2419: (LINE)); \ ! 2420: } while (0) ! 2421: ! 2422: #define PUT_SDB_BLOCK_START(LINE) \ ! 2423: PUT_SDB_BLOCK_OR_FUNCTION (".bb", C_BLOCK, (LINE)) ! 2424: ! 2425: #define PUT_SDB_BLOCK_END(LINE) \ ! 2426: PUT_SDB_BLOCK_OR_FUNCTION (".eb", C_BLOCK, (LINE)) ! 2427: ! 2428: #define PUT_SDB_FUNCTION_START(LINE) \ ! 2429: do { \ ! 2430: fprintf (asm_out_file, "\tln\t 1\n"); \ ! 2431: PUT_SDB_BLOCK_OR_FUNCTION (".bf", C_FCN, (LINE)); \ ! 2432: } while (0) ! 2433: ! 2434: #define PUT_SDB_FUNCTION_END(LINE) \ ! 2435: do { \ ! 2436: PUT_SDB_BLOCK_OR_FUNCTION (".ef", C_FCN, (LINE)); \ ! 2437: } while (0) ! 2438: ! 2439: #define PUT_SDB_EPILOGUE_END(NAME) \ ! 2440: do { \ ! 2441: text_section (); \ ! 2442: fprintf (asm_out_file, "\n\tsdef\t "); \ ! 2443: ASM_OUTPUT_LABELREF(asm_out_file, (NAME)); \ ! 2444: fputc('\n', asm_out_file); \ ! 2445: PUT_SDB_SCL( C_EFCN ); \ ! 2446: fprintf (asm_out_file, "\tendef\n\n"); \ ! 2447: } while (0) ! 2448: ! 2449: #define SDB_GENERATE_FAKE(BUFFER, NUMBER) \ ! 2450: sprintf ((BUFFER), ".%dfake", (NUMBER)); ! 2451: ! 2452: #endif /* SDB_DEBUGGING_INFO */ ! 2453: ! 2454: /* Support const and tdesc sections. Generally, a const section will ! 2455: be distinct from the text section whenever we do V.4-like things ! 2456: and so follows DECLARE_ASM_NAME. Note that strings go in text ! 2457: rather than const. Override svr[34].h. */ ! 2458: ! 2459: #undef USE_CONST_SECTION ! 2460: #undef EXTRA_SECTIONS ! 2461: ! 2462: #define USE_CONST_SECTION DECLARE_ASM_NAME ! 2463: ! 2464: #if defined(USING_SVR4_H) ! 2465: ! 2466: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors ! 2467: #define INIT_SECTION_FUNCTION ! 2468: #define FINI_SECTION_FUNCTION ! 2469: ! 2470: #else ! 2471: #if defined(USING_SVR3_H) ! 2472: ! 2473: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata, in_ctors, in_dtors, \ ! 2474: in_init, in_fini ! 2475: ! 2476: #else /* m88kluna or other not based on svr[34].h. */ ! 2477: ! 2478: #undef INIT_SECTION_ASM_OP ! 2479: #define EXTRA_SECTIONS in_const, in_tdesc, in_sdata ! 2480: #define CONST_SECTION_FUNCTION \ ! 2481: void \ ! 2482: const_section () \ ! 2483: { \ ! 2484: text_section(); \ ! 2485: } ! 2486: #define CTORS_SECTION_FUNCTION ! 2487: #define DTORS_SECTION_FUNCTION ! 2488: #define INIT_SECTION_FUNCTION ! 2489: #define FINI_SECTION_FUNCTION ! 2490: ! 2491: #endif /* USING_SVR3_H */ ! 2492: #endif /* USING_SVR4_H */ ! 2493: ! 2494: #undef EXTRA_SECTION_FUNCTIONS ! 2495: #define EXTRA_SECTION_FUNCTIONS \ ! 2496: CONST_SECTION_FUNCTION \ ! 2497: \ ! 2498: void \ ! 2499: tdesc_section () \ ! 2500: { \ ! 2501: if (in_section != in_tdesc) \ ! 2502: { \ ! 2503: fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \ ! 2504: in_section = in_tdesc; \ ! 2505: } \ ! 2506: } \ ! 2507: \ ! 2508: void \ ! 2509: sdata_section () \ ! 2510: { \ ! 2511: if (in_section != in_sdata) \ ! 2512: { \ ! 2513: fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP); \ ! 2514: in_section = in_sdata; \ ! 2515: } \ ! 2516: } \ ! 2517: \ ! 2518: CTORS_SECTION_FUNCTION \ ! 2519: DTORS_SECTION_FUNCTION \ ! 2520: INIT_SECTION_FUNCTION \ ! 2521: FINI_SECTION_FUNCTION ! 2522: ! 2523: /* A C statement or statements to switch to the appropriate ! 2524: section for output of DECL. DECL is either a `VAR_DECL' node ! 2525: or a constant of some sort. RELOC indicates whether forming ! 2526: the initial value of DECL requires link-time relocations. ! 2527: ! 2528: For strings, the section is selected before the segment info is encoded. */ ! 2529: #undef SELECT_SECTION ! 2530: #define SELECT_SECTION(DECL,RELOC) \ ! 2531: { \ ! 2532: if (TREE_CODE (DECL) == STRING_CST) \ ! 2533: { \ ! 2534: if (! flag_writable_strings) \ ! 2535: const_section (); \ ! 2536: else if (m88k_gp_threshold > 0 \ ! 2537: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \ ! 2538: sdata_section (); \ ! 2539: else \ ! 2540: data_section (); \ ! 2541: } \ ! 2542: else if (TREE_CODE (DECL) == VAR_DECL) \ ! 2543: { \ ! 2544: if (SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0))) \ ! 2545: sdata_section (); \ ! 2546: else if ((flag_pic && RELOC) \ ! 2547: || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \ ! 2548: data_section (); \ ! 2549: else \ ! 2550: const_section (); \ ! 2551: } \ ! 2552: else \ ! 2553: const_section (); \ ! 2554: } ! 2555: ! 2556: /* Jump tables consist of branch instructions and should be output in ! 2557: the text section. When we use a table of addresses, we explicitly ! 2558: change to the readonly data section. */ ! 2559: #define JUMP_TABLES_IN_TEXT_SECTION 1 ! 2560: ! 2561: /* Define this macro if references to a symbol must be treated differently ! 2562: depending on something about the variable or function named by the ! 2563: symbol (such as what section it is in). ! 2564: ! 2565: The macro definition, if any, is executed immediately after the rtl for ! 2566: DECL has been created and stored in `DECL_RTL (DECL)'. The value of the ! 2567: rtl will be a `mem' whose address is a `symbol_ref'. ! 2568: ! 2569: For the m88k, determine if the item should go in the global pool. */ ! 2570: #define ENCODE_SECTION_INFO(DECL) \ ! 2571: do { \ ! 2572: if (m88k_gp_threshold > 0) \ ! 2573: if (TREE_CODE (DECL) == VAR_DECL) \ ! 2574: { \ ! 2575: if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)) \ ! 2576: { \ ! 2577: int size = int_size_in_bytes (TREE_TYPE (DECL)); \ ! 2578: \ ! 2579: if (size > 0 && size <= m88k_gp_threshold) \ ! 2580: SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ ! 2581: } \ ! 2582: } \ ! 2583: else if (TREE_CODE (DECL) == STRING_CST \ ! 2584: && flag_writable_strings \ ! 2585: && TREE_STRING_LENGTH (DECL) <= m88k_gp_threshold) \ ! 2586: SYMBOL_REF_FLAG (XEXP (TREE_CST_RTL (DECL), 0)) = 1; \ ! 2587: } while (0) ! 2588: ! 2589: /* Print operand X (an rtx) in assembler syntax to file FILE. ! 2590: CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. ! 2591: For `%' followed by punctuation, CODE is the punctuation and X is null. */ ! 2592: #define PRINT_OPERAND_PUNCT_VALID_P(c) \ ! 2593: ((c) == '#' || (c) == '.' || (c) == '!' || (c) == '*' || (c) == ';') ! 2594: ! 2595: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) ! 2596: ! 2597: /* Print a memory address as an operand to reference that memory location. */ ! 2598: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR)
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