![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to sysv4.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple XNU] / GNUtools / cc / config / i860|
Return to sysv4.h CVS log | Up to [Apple XNU] / GNUtools / cc / config / i860 |
1.1 ! root 1: /* Target definitions for GNU compiler for Intel 80860 running System V.4 ! 2: Copyright (C) 1991 Free Software Foundation, Inc. ! 3: ! 4: Written by Ron Guilmette ([email protected]). ! 5: ! 6: This file is part of GNU CC. ! 7: ! 8: GNU CC is free software; you can redistribute it and/or modify ! 9: it under the terms of the GNU General Public License as published by ! 10: the Free Software Foundation; either version 2, or (at your option) ! 11: any later version. ! 12: ! 13: GNU CC is distributed in the hope that it will be useful, ! 14: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 16: GNU General Public License for more details. ! 17: ! 18: You should have received a copy of the GNU General Public License ! 19: along with GNU CC; see the file COPYING. If not, write to ! 20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 21: ! 22: #include "i860/i860.h" ! 23: #include "svr4.h" ! 24: ! 25: #undef TARGET_VERSION ! 26: #define TARGET_VERSION fprintf (stderr, " (i860 System V Release 4)"); ! 27: ! 28: /* Provide a set of pre-definitions and pre-assertions appropriate for ! 29: the i860 running svr4. Note that the symbol `__svr4__' MUST BE ! 30: DEFINED! It is needed so that the va_list struct in va-i860.h ! 31: will get correctly defined for the svr4 (ABI compliant) case rather ! 32: than for the previous (svr3, svr2, ...) case. It also needs to be ! 33: defined so that the correct (svr4) version of __builtin_saveregs ! 34: will be selected when we are building gnulib2.c. ! 35: __svr4__ is our extension. */ ! 36: ! 37: #define CPP_PREDEFINES \ ! 38: "-Di860 -Dunix -DSVR4 -D__svr4__ -Asystem(unix) -Asystem(svr4) -Acpu(i860) -Amachine(i860)" ! 39: ! 40: /* The prefix to be used in assembler output for all names of registers. ! 41: This string gets prepended to all i860 register names (svr4 only). */ ! 42: ! 43: #define I860_REG_PREFIX "%" ! 44: ! 45: #define ASM_COMMENT_START "#" ! 46: ! 47: #undef TYPE_OPERAND_FMT ! 48: #define TYPE_OPERAND_FMT "\"%s\"" ! 49: ! 50: #define DBX_REGISTER_NUMBER(REGNO) (REGNO) ! 51: ! 52: /* The following macro definition overrides the one in i860.h ! 53: because the svr4 i860 assembler requires a different syntax ! 54: for getting parts of constant/relocatable values. */ ! 55: ! 56: #undef PRINT_OPERAND_PART ! 57: #define PRINT_OPERAND_PART(FILE, X, PART_CODE) \ ! 58: do { fprintf (FILE, "["); \ ! 59: output_address (X); \ ! 60: fprintf (FILE, "]@%s", PART_CODE); \ ! 61: } while (0) ! 62: ! 63: /* If the host and target formats match, output the floats as hex. */ ! 64: #if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT ! 65: #if defined (HOST_WORDS_BIG_ENDIAN) == WORDS_BIG_ENDIAN ! 66: ! 67: /* This is how to output an assembler line defining a `double' constant. ! 68: Note that the native i860/svr4 ELF assembler can't properly handle ! 69: infinity. It generates an incorrect (non-infinity) value when given ! 70: `.double 99e9999' and it doesn't grok `inf' at all. It also mishandles ! 71: NaNs and -0.0. */ ! 72: ! 73: #undef ASM_OUTPUT_DOUBLE ! 74: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 75: { \ ! 76: if (REAL_VALUE_ISINF (VALUE) \ ! 77: || REAL_VALUE_ISNAN (VALUE) \ ! 78: || REAL_VALUE_MINUS_ZERO (VALUE)) \ ! 79: { \ ! 80: long t[2]; \ ! 81: REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t); \ ! 82: fprintf (FILE, "\t.word 0x%lx\n\t.word 0x%lx\n", t[0], t[1]); \ ! 83: } \ ! 84: else \ ! 85: fprintf (FILE, "\t.double %.20e\n", VALUE); \ ! 86: } ! 87: ! 88: /* This is how to output an assembler line defining a `float' constant. ! 89: Note that the native i860/svr4 ELF assembler can't properly handle ! 90: infinity. It actually generates an assembly time error when given ! 91: `.float 99e9999' and it doesn't grok `inf' at all. It also mishandles ! 92: NaNs and -0.0. */ ! 93: ! 94: #undef ASM_OUTPUT_FLOAT ! 95: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 96: { \ ! 97: if (REAL_VALUE_ISINF (VALUE) \ ! 98: || REAL_VALUE_ISNAN (VALUE) \ ! 99: || REAL_VALUE_MINUS_ZERO (VALUE)) \ ! 100: { \ ! 101: long t; \ ! 102: REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \ ! 103: fprintf (FILE, "\t.word 0x%lx\n", t); \ ! 104: } \ ! 105: else \ ! 106: fprintf (FILE, "\t.float %.12e\n", VALUE); \ ! 107: } ! 108: ! 109: #endif /* word order matches */ ! 110: #endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */ ! 111: ! 112: #undef ASM_FILE_START ! 113: #define ASM_FILE_START(FILE) \ ! 114: do { output_file_directive (FILE, main_input_filename); \ ! 115: fprintf (FILE, "\t.version\t\"01.01\"\n"); \ ! 116: } while (0) ! 117: ! 118: /* Output the special word the svr4 SDB wants to see just before ! 119: the first word of each function's prologue code. */ ! 120: ! 121: extern char *current_function_original_name; ! 122: ! 123: /* This special macro is used to output a magic word just before the ! 124: first word of each function. On some versions of UNIX running on ! 125: the i860, this word can be any word that looks like a NOP, however ! 126: under svr4, this neds to be an `shr r0,r0,r0' instruction in which ! 127: the normally unused low-order bits contain the length of the function ! 128: prologue code (in bytes). This is needed to make the svr4 SDB debugger ! 129: happy. */ ! 130: ! 131: #undef ASM_OUTPUT_FUNCTION_PREFIX ! 132: #define ASM_OUTPUT_FUNCTION_PREFIX(FILE, FNNAME) \ ! 133: do { ASM_OUTPUT_ALIGN (FILE, 2); \ ! 134: fprintf ((FILE), "\t.long\t.ep."); \ ! 135: assemble_name (FILE, FNNAME); \ ! 136: fprintf (FILE, "-"); \ ! 137: assemble_name (FILE, FNNAME); \ ! 138: fprintf (FILE, "+0xc8000000\n"); \ ! 139: current_function_original_name = (FNNAME); \ ! 140: } while (0) ! 141: ! 142: /* Output the special label that must go just after each function's ! 143: prologue code to support svr4 SDB. */ ! 144: ! 145: #define ASM_OUTPUT_PROLOGUE_SUFFIX(FILE) \ ! 146: do { fprintf (FILE, ".ep."); \ ! 147: assemble_name (FILE, current_function_original_name); \ ! 148: fprintf (FILE, ":\n"); \ ! 149: } while (0) ! 150: ! 151: #undef CTORS_SECTION_ASM_OP ! 152: #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"a\",\"progbits\"" ! 153: #undef DTORS_SECTION_ASM_OP ! 154: #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"a\",\"progbits\"" ! 155: ! 156: /* Add definitions to support the .tdesc section as specified in the svr4 ! 157: ABI for the i860. */ ! 158: ! 159: #define TDESC_SECTION_ASM_OP ".section\t.tdesc" ! 160: ! 161: #undef EXTRA_SECTIONS ! 162: #define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_tdesc ! 163: ! 164: #undef EXTRA_SECTION_FUNCTIONS ! 165: #define EXTRA_SECTION_FUNCTIONS \ ! 166: CONST_SECTION_FUNCTION \ ! 167: CTORS_SECTION_FUNCTION \ ! 168: DTORS_SECTION_FUNCTION \ ! 169: TDESC_SECTION_FUNCTION ! 170: ! 171: #define TDESC_SECTION_FUNCTION \ ! 172: void \ ! 173: tdesc_section () \ ! 174: { \ ! 175: if (in_section != in_tdesc) \ ! 176: { \ ! 177: fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \ ! 178: in_section = in_tdesc; \ ! 179: } \ ! 180: } ! 181: ! 182: #ifdef OUTPUT_TDESC ! 183: #undef ASM_FILE_END ! 184: #define ASM_FILE_END(FILE) \ ! 185: do { \ ! 186: if (current_function_original_name != NULL) { \ ! 187: tdesc_section(); \ ! 188: fprintf ((FILE), "%s __ETEXT\n", ASM_LONG); \ ! 189: fprintf ((FILE), "%s 0\n", ASM_LONG); \ ! 190: text_section(); \ ! 191: fputs("__ETEXT:\n", (FILE)); \ ! 192: } \ ! 193: fprintf ((FILE), "\t.ident\t\"GCC: (GNU) %s\"\n", \ ! 194: version_string); \ ! 195: } while (0) ! 196: #endif
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.