|
|
1.1 ! root 1: /* Target definitions for GNU compiler for Intel 80860 running System V.3 ! 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 "svr3.h" ! 24: ! 25: #undef TARGET_VERSION ! 26: #define TARGET_VERSION fprintf (stderr, " (i860, System V Release 3)") ! 27: ! 28: /* Provide a set of pre-definitions and pre-assertions appropriate for ! 29: the i860 running svr3. */ ! 30: #define CPP_PREDEFINES "-Di860 -Dunix -D__svr3__ -Asystem(unix) -Asystem(svr3) -Acpu(i860) -Amachine(i860)" ! 31: ! 32: /* Use crt1.o as a startup file and crtn.o as a closing file. */ ! 33: ! 34: #define STARTFILE_SPEC \ ! 35: "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}" ! 36: ! 37: #define LIB_SPEC "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} -lc crtn.o%s" ! 38: ! 39: /* Special flags for the linker. I don't know what they do. */ ! 40: ! 41: #define LINK_SPEC "%{T*} %{z:-lm}" ! 42: ! 43: /* The prefix to be used in assembler output for all names of registers. ! 44: None is needed in V.3. */ ! 45: ! 46: #define I860_REG_PREFIX "" ! 47: ! 48: /* Delimiter that starts comments in the assembler code. */ ! 49: ! 50: #define ASM_COMMENT_START "//" ! 51: ! 52: /* Don't renumber the regusters for debugger output. */ ! 53: ! 54: #define DBX_REGISTER_NUMBER(REGNO) (REGNO) ! 55: ! 56: /* Output the special word the System V SDB wants to see just before ! 57: the first word of each function's prologue code. */ ! 58: ! 59: extern char *current_function_original_name; ! 60: ! 61: /* This special macro is used to output a magic word just before the ! 62: first word of each function. On some versions of UNIX running on ! 63: the i860, this word can be any word that looks like a NOP, however ! 64: under svr4, this neds to be an `shr r0,r0,r0' instruction in which ! 65: the normally unused low-order bits contain the length of the function ! 66: prologue code (in bytes). This is needed to make the System V SDB ! 67: debugger happy. */ ! 68: ! 69: #undef ASM_OUTPUT_FUNCTION_PREFIX ! 70: #define ASM_OUTPUT_FUNCTION_PREFIX(FILE, FNNAME) \ ! 71: do { ASM_OUTPUT_ALIGN (FILE, 2); \ ! 72: fprintf ((FILE), "\t.long\t.ep."); \ ! 73: assemble_name (FILE, FNNAME); \ ! 74: fprintf (FILE, "-"); \ ! 75: assemble_name (FILE, FNNAME); \ ! 76: fprintf (FILE, "+0xc8000000\n"); \ ! 77: current_function_original_name = (FNNAME); \ ! 78: } while (0) ! 79: ! 80: /* Output the special label that must go just after each function's ! 81: prologue code to support svr4 SDB. */ ! 82: ! 83: #define ASM_OUTPUT_PROLOGUE_SUFFIX(FILE) \ ! 84: do { fprintf (FILE, ".ep."); \ ! 85: assemble_name (FILE, current_function_original_name); \ ! 86: fprintf (FILE, ":\n"); \ ! 87: } while (0) ! 88: ! 89: /* This says how to output an assembler line ! 90: to define a local common symbol. ! 91: The difference from svr3.h is we don't limit align to 2. */ ! 92: ! 93: #undef ASM_OUTPUT_LOCAL ! 94: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ ! 95: do { \ ! 96: int align = exact_log2 (ROUNDED); \ ! 97: data_section (); \ ! 98: ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \ ! 99: ASM_OUTPUT_LABEL ((FILE), (NAME)); \ ! 100: fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)); \ ! 101: } while (0) ! 102: ! 103: /* The routine used to output string literals. ! 104: ! 105: #define ASCII_DATA_ASM_OP ".byte" ! 106: ! 107: #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ ! 108: do \ ! 109: { \ ! 110: register unsigned char *str = (unsigned char *) (STR); \ ! 111: register unsigned char *limit = str + (LENGTH); \ ! 112: register unsigned bytes_in_chunk = 0; \ ! 113: for (; str < limit; str++) \ ! 114: { \ ! 115: register unsigned ch = *str; \ ! 116: if (ch < 32 || ch == '\\' || ch == '"' || ch >= 127) \ ! 117: { \ ! 118: if (bytes_in_chunk > 0) \ ! 119: { \ ! 120: fprintf ((FILE), "\"\n"); \ ! 121: bytes_in_chunk = 0; \ ! 122: } \ ! 123: fprintf ((FILE), "\t%s\t%d\n", ASM_BYTE_OP, ch); \ ! 124: } \ ! 125: else \ ! 126: { \ ! 127: if (bytes_in_chunk >= 60) \ ! 128: { \ ! 129: fprintf ((FILE), "\"\n"); \ ! 130: bytes_in_chunk = 0; \ ! 131: } \ ! 132: if (bytes_in_chunk == 0) \ ! 133: fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP); \ ! 134: putc (ch, (FILE)); \ ! 135: bytes_in_chunk++; \ ! 136: } \ ! 137: } \ ! 138: if (bytes_in_chunk > 0) \ ! 139: fprintf ((FILE), "\"\n"); \ ! 140: } \ ! 141: while (0) ! 142: ! 143: ! 144: #undef CTORS_SECTION_ASM_OP ! 145: #define CTORS_SECTION_ASM_OP ".section\t.ctors,\"x\"" ! 146: #undef DTORS_SECTION_ASM_OP ! 147: #define DTORS_SECTION_ASM_OP ".section\t.dtors,\"x\"" ! 148: ! 149: /* Add definitions to support the .tdesc section as specified in the svr4 ! 150: ABI for the i860. */ ! 151: ! 152: #define TDESC_SECTION_ASM_OP ".section\t.tdesc" ! 153: ! 154: #undef EXTRA_SECTIONS ! 155: #define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_tdesc ! 156: ! 157: #undef EXTRA_SECTION_FUNCTIONS ! 158: #define EXTRA_SECTION_FUNCTIONS \ ! 159: CONST_SECTION_FUNCTION \ ! 160: CTORS_SECTION_FUNCTION \ ! 161: DTORS_SECTION_FUNCTION \ ! 162: TDESC_SECTION_FUNCTION ! 163: ! 164: #define TDESC_SECTION_FUNCTION \ ! 165: void \ ! 166: tdesc_section () \ ! 167: { \ ! 168: if (in_section != in_tdesc) \ ! 169: { \ ! 170: fprintf (asm_out_file, "%s\n", TDESC_SECTION_ASM_OP); \ ! 171: in_section = in_tdesc; \ ! 172: } \ ! 173: } ! 174: ! 175: /* Enable the `const' section that svr3.h defines how to use. */ ! 176: #undef USE_CONST_SECTION ! 177: #define USE_CONST_SECTION 1
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.