| 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)); |