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1.1 ! root 1: /* Target definitions for GNU compiler for mc680x0 running NeXTSTEP ! 2: Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc. ! 3: ! 4: This file is part of GNU CC. ! 5: ! 6: GNU CC is free software; you can redistribute it and/or modify ! 7: it under the terms of the GNU General Public License as published by ! 8: the Free Software Foundation; either version 2, or (at your option) ! 9: any later version. ! 10: ! 11: GNU CC is distributed in the hope that it will be useful, ! 12: but WITHOUT ANY WARRANTY; without even the implied warranty of ! 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ! 14: GNU General Public License for more details. ! 15: ! 16: You should have received a copy of the GNU General Public License ! 17: along with GNU CC; see the file COPYING. If not, write to ! 18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ ! 19: ! 20: #include "m68k/m68k.h" ! 21: #include "nextstep.h" ! 22: #include "machmode.h" ! 23: #include "real.h" ! 24: ! 25: /* See m68k.h. 0407 means 68040 (or 68030 or 68020, with 68881/2). */ ! 26: ! 27: #define TARGET_DEFAULT 0407 ! 28: ! 29: /* Boundary (in *bits*) on which stack pointer should be aligned. */ ! 30: ! 31: #undef STACK_BOUNDARY ! 32: #define STACK_BOUNDARY 32 ! 33: ! 34: /* Names to predefine in the preprocessor for this target machine. */ ! 35: ! 36: #define CPP_PREDEFINES "-Dmc68000 -Dm68k -DNeXT -Dunix -D__MACH__ -D__BIG_ENDIAN__ -D__ARCHITECTURE__=\"m68k\"" ! 37: ! 38: /* Every structure or union's size must be a multiple of 2 bytes. ! 39: (Why isn't this in m68k.h?) */ ! 40: ! 41: #define STRUCTURE_SIZE_BOUNDARY 16 ! 42: /* This is how to output an assembler line defining a `double' constant. */ ! 43: ! 44: #undef ASM_OUTPUT_DOUBLE ! 45: #ifdef REAL_VALUE_TO_TARGET_DOUBLE ! 46: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 47: do { \ ! 48: long hex[2]; \ ! 49: REAL_VALUE_TO_TARGET_DOUBLE (VALUE, hex); \ ! 50: fprintf (FILE, "\t.long 0x%x\n\t.long 0x%x\n", hex[0], hex[1]); \ ! 51: } while (0) ! 52: #else ! 53: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ ! 54: do { if (REAL_VALUE_ISINF (VALUE)) \ ! 55: { \ ! 56: if (REAL_VALUE_NEGATIVE (VALUE)) \ ! 57: fprintf (FILE, "\t.double 0r-99e999\n"); \ ! 58: else \ ! 59: fprintf (FILE, "\t.double 0r99e999\n"); \ ! 60: } \ ! 61: else \ ! 62: { char dstr[30]; \ ! 63: REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \ ! 64: fprintf (FILE, "\t.double 0r%s\n", dstr); \ ! 65: } \ ! 66: } while (0) ! 67: #endif ! 68: ! 69: /* This is how to output an assembler line defining a `float' constant. */ ! 70: ! 71: #undef ASM_OUTPUT_FLOAT ! 72: #ifdef REAL_VALUE_TO_TARGET_SINGLE ! 73: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 74: do { \ ! 75: long hex; \ ! 76: REAL_VALUE_TO_TARGET_SINGLE (VALUE, hex); \ ! 77: fprintf (FILE, "\t.long 0x%x\n", hex); \ ! 78: } while (0) ! 79: #else ! 80: #define ASM_OUTPUT_FLOAT(FILE,VALUE) \ ! 81: do { if (REAL_VALUE_ISINF (VALUE)) \ ! 82: { \ ! 83: if (REAL_VALUE_NEGATIVE (VALUE)) \ ! 84: fprintf (FILE, "\t.single 0r-99e999\n"); \ ! 85: else \ ! 86: fprintf (FILE, "\t.single 0r99e999\n"); \ ! 87: } \ ! 88: else \ ! 89: { char dstr[30]; \ ! 90: REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", dstr); \ ! 91: fprintf (FILE, "\t.single 0r%s\n", dstr); \ ! 92: } \ ! 93: } while (0) ! 94: #endif ! 95: ! 96: #undef ASM_OUTPUT_FLOAT_OPERAND ! 97: #ifdef REAL_VALUE_TO_TARGET_SINGLE ! 98: #define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE) \ ! 99: do { \ ! 100: long hex; \ ! 101: REAL_VALUE_TO_TARGET_SINGLE (VALUE, hex); \ ! 102: fprintf (FILE, "#0%c%x", (CODE) == 'f' ? 'b' : 'x', hex); \ ! 103: } while (0) ! 104: #else ! 105: #define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE) \ ! 106: do{ \ ! 107: if (CODE != 'f') \ ! 108: { \ ! 109: long l; \ ! 110: REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \ ! 111: if (sizeof (int) == sizeof (long)) \ ! 112: asm_fprintf ((FILE), "%I0x%x", l); \ ! 113: else \ ! 114: asm_fprintf ((FILE), "%I0x%lx", l); \ ! 115: } \ ! 116: else if (REAL_VALUE_ISINF (VALUE)) \ ! 117: { \ ! 118: if (REAL_VALUE_NEGATIVE (VALUE)) \ ! 119: fprintf (FILE, "#0r-99e999"); \ ! 120: else \ ! 121: fprintf (FILE, "#0r99e999"); \ ! 122: } \ ! 123: else \ ! 124: { char dstr[30]; \ ! 125: REAL_VALUE_TO_DECIMAL ((VALUE), "%.9g", dstr); \ ! 126: fprintf (FILE, "#0r%s", dstr); \ ! 127: } \ ! 128: } while (0) ! 129: #endif ! 130: ! 131: #undef ASM_OUTPUT_DOUBLE_OPERAND ! 132: #ifdef REAL_VALUE_TO_TARGET_DOUBLE ! 133: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \ ! 134: do { \ ! 135: long hex[2]; \ ! 136: REAL_VALUE_TO_TARGET_DOUBLE (VALUE, hex); \ ! 137: fprintf (FILE, "#0b%x%08x", hex[0], hex[1]); \ ! 138: } while (0) ! 139: #else ! 140: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \ ! 141: do { if (REAL_VALUE_ISINF (VALUE)) \ ! 142: { \ ! 143: if (REAL_VALUE_NEGATIVE (VALUE)) \ ! 144: fprintf (FILE, "#0r-99e999"); \ ! 145: else \ ! 146: fprintf (FILE, "#0r99e999"); \ ! 147: } \ ! 148: else \ ! 149: { char dstr[30]; \ ! 150: REAL_VALUE_TO_DECIMAL ((VALUE), "%.20g", dstr); \ ! 151: fprintf (FILE, "#0r%s", dstr); \ ! 152: } \ ! 153: } while (0) ! 154: #endif ! 155: ! 156: /* We do not define JUMP_TABLES_IN_TEXT_SECTION, since we wish to keep ! 157: the text section pure. There is no point in addressing the jump ! 158: tables using pc relative addressing, since they are not in the text ! 159: section, so we undefine CASE_VECTOR_PC_RELATIVE. This also ! 160: causes the compiler to use absolute addresses in the jump table, ! 161: so we redefine CASE_VECTOR_MODE to be SImode. */ ! 162: ! 163: #undef CASE_VECTOR_MODE ! 164: #define CASE_VECTOR_MODE SImode ! 165: #undef CASE_VECTOR_PC_RELATIVE ! 166: ! 167: /* Make sure jump tables have the same alignment as other pointers. */ ! 168: ! 169: #define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLEINSN) \ ! 170: { ASM_OUTPUT_ALIGN (FILE, 1); ASM_OUTPUT_INTERNAL_LABEL (FILE, PREFIX, NUM); } ! 171: ! 172: /* Don't treat addresses involving labels differently from symbol names. ! 173: Previously, references to labels generated pc-relative addressing modes ! 174: while references to symbol names generated absolute addressing modes. */ ! 175: ! 176: #undef GO_IF_INDEXABLE_BASE(X, ADDR) ! 177: #define GO_IF_INDEXABLE_BASE(X, ADDR) \ ! 178: { if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) goto ADDR; } ! 179: ! 180: /* This accounts for the return pc and saved fp on the m68k. */ ! 181: ! 182: #define OBJC_FORWARDING_STACK_OFFSET 8 ! 183: #define OBJC_FORWARDING_MIN_OFFSET 8
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