projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /* Definitions for BSD Intel 386; derived from tm-seq386.h. |
| 2 | Copyright (C) 1988 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 1, 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 "tm-i386.h" | |
| 21 | ||
| 22 | /* Use the BSD assembler syntax. */ | |
| 23 | ||
| 24 | #include "tm-bsd386.h" | |
| 25 | ||
| 26 | /* By default, target has a 80387. */ | |
| 27 | ||
| 28 | #define TARGET_DEFAULT 1 | |
| 29 | ||
| 30 | /* Specify predefined symbols in preprocessor. */ | |
| 31 | ||
| 32 | #define CPP_PREDEFINES "-Dunix -Di386 -Di386b" | |
| 33 | ||
| 34 | /* Don't permit / as a comment start character. */ | |
| 35 | ||
| 36 | #undef COMMENT_BEGIN | |
| 37 | #define COMMENT_BEGIN "#" | |
| 38 | ||
| 39 | #undef ASM_APP_ON | |
| 40 | #define ASM_APP_ON "#APP\n" | |
| 41 | ||
| 42 | #undef ASM_APP_OFF | |
| 43 | #define ASM_APP_OFF "#NO_APP\n" | |
| 44 | ||
| 45 | #undef ASM_FILE_START | |
| 46 | #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n"); | |
| 47 | ||
| 48 | /* We want to output DBX debugging information. */ | |
| 49 | ||
| 50 | #define DBX_DEBUGGING_INFO | |
| 51 | #undef DBX_NO_XREFS | |
| 52 | #undef DBX_CONTIN_LENGTH | |
| 53 | ||
| 54 | /* Don't put floating point numbers in general registers -- there | |
| 55 | are no fp-to-general register moves, and we run out of registers. */ | |
| 56 | ||
| 57 | #undef HARD_REGNO_MODE_OK | |
| 58 | #define HARD_REGNO_MODE_OK(REGNO, MODE) \ | |
| 59 | (MODE == DFmode || MODE == SFmode ? REGNO >= 8 \ | |
| 60 | : MODE == QImode ? REGNO < 4 : REGNO < 8) | |
| 61 | ||
| 62 | /* Floating-point return values come in the FP register. */ | |
| 63 | ||
| 64 | #define VALUE_REGNO(MODE) \ | |
| 65 | (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0) | |
| 66 | ||
| 67 | /* 1 if N is a possible register number for a function value. */ | |
| 68 | ||
| 69 | #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG) | |
| 70 | ||
| 71 | /* Output assembler code to FILE to increment profiler label # LABELNO | |
| 72 | for profiling a function entry. */ | |
| 73 | ||
| 74 | #undef FUNCTION_PROFILER | |
| 75 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
| 76 | fprintf (FILE, "\tmovl $LP%d,%%eax\n\tcall mcount\n", (LABELNO)); |