projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| af359dea C |
1 | /*- |
| 2 | * This code is derived from software copyrighted by the Free Software | |
| 3 | * Foundation. | |
| 4 | * | |
| 5 | * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. | |
| 6 | * | |
| 7 | * @(#)tm-i386b.h 6.2 (Berkeley) 5/8/91 | |
| 8 | */ | |
| 9 | ||
| 10 | /* Definitions for BSD Intel 386; derived from tm-seq386.h. | |
| 11 | Copyright (C) 1988 Free Software Foundation, Inc. | |
| 12 | ||
| 13 | This file is part of GNU CC. | |
| 14 | ||
| 15 | GNU CC is free software; you can redistribute it and/or modify | |
| 16 | it under the terms of the GNU General Public License as published by | |
| 17 | the Free Software Foundation; either version 1, or (at your option) | |
| 18 | any later version. | |
| 19 | ||
| 20 | GNU CC is distributed in the hope that it will be useful, | |
| 21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 23 | GNU General Public License for more details. | |
| 24 | ||
| 25 | You should have received a copy of the GNU General Public License | |
| 26 | along with GNU CC; see the file COPYING. If not, write to | |
| 27 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 28 | ||
| 29 | #include "tm-i386.h" | |
| 30 | ||
| 31 | /* Use the BSD assembler syntax. */ | |
| 32 | ||
| 33 | #include "tm-bsd386.h" | |
| 34 | ||
| 35 | /* By default, target has a 80387. */ | |
| 36 | ||
| 37 | #define TARGET_DEFAULT 1 | |
| 38 | ||
| 39 | /* Specify predefined symbols in preprocessor. */ | |
| 40 | ||
| 41 | #define CPP_PREDEFINES "-Dunix -Di386 -Di386b" | |
| 42 | ||
| 43 | /* Don't permit / as a comment start character. */ | |
| 44 | ||
| 45 | #undef COMMENT_BEGIN | |
| 46 | #define COMMENT_BEGIN "#" | |
| 47 | ||
| 48 | #undef ASM_APP_ON | |
| 49 | #define ASM_APP_ON "#APP\n" | |
| 50 | ||
| 51 | #undef ASM_APP_OFF | |
| 52 | #define ASM_APP_OFF "#NO_APP\n" | |
| 53 | ||
| 54 | #undef ASM_FILE_START | |
| 55 | #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n"); | |
| 56 | ||
| 57 | /* We want to output DBX debugging information. */ | |
| 58 | ||
| 59 | #define DBX_DEBUGGING_INFO | |
| 60 | #undef DBX_NO_XREFS | |
| 61 | #undef DBX_CONTIN_LENGTH | |
| 62 | ||
| 63 | /* Floating-point return values come in the FP register. */ | |
| 64 | ||
| 65 | #define VALUE_REGNO(MODE) \ | |
| 66 | (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0) | |
| 67 | ||
| 68 | /* 1 if N is a possible register number for a function value. */ | |
| 69 | ||
| 70 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG) | |
| 71 | ||
| 72 | /* Output assembler code to FILE to increment profiler label # LABELNO | |
| 73 | for profiling a function entry. */ | |
| 74 | ||
| 75 | #undef FUNCTION_PROFILER | |
| 76 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 77 | fprintf (FILE, "\tmovl $LP%d,%%eax\n\tcall mcount\n", (LABELNO)); |