| 1 | /* Definitions for BSD assembler syntax for Intel 386 |
| 2 | (actually AT&T syntax for insns and operands, |
| 3 | adapted to BSD conventions for symbol names and debugging.) |
| 4 | Copyright (C) 1988 Free Software Foundation, Inc. |
| 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 common aspects of all 386 Unix assemblers. */ |
| 23 | #include "i386/unix.h" |
| 24 | |
| 25 | /* Use the Sequent Symmetry assembler syntax. */ |
| 26 | |
| 27 | #define TARGET_VERSION fprintf (stderr, " (80386, BSD syntax)"); |
| 28 | \f |
| 29 | /* Define the syntax of pseudo-ops, labels and comments. */ |
| 30 | |
| 31 | /* Prefix for internally generated assembler labels. If we aren't using |
| 32 | underscores, we are using prefix `.'s to identify labels that should |
| 33 | be ignored, as in `i386/gas.h' --karl@cs.umb.edu */ |
| 34 | #ifdef NO_UNDERSCORES |
| 35 | #define LPREFIX ".L" |
| 36 | #else |
| 37 | #define LPREFIX "L" |
| 38 | #endif /* not NO_UNDERSCORES */ |
| 39 | |
| 40 | /* Assembler pseudos to introduce constants of various size. */ |
| 41 | |
| 42 | #define ASM_BYTE_OP "\t.byte" |
| 43 | #define ASM_SHORT "\t.word" |
| 44 | #define ASM_LONG "\t.long" |
| 45 | #define ASM_DOUBLE "\t.double" |
| 46 | |
| 47 | /* Output at beginning of assembler file. |
| 48 | ??? I am skeptical of this -- RMS. */ |
| 49 | |
| 50 | #define ASM_FILE_START(FILE) \ |
| 51 | fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name); |
| 52 | |
| 53 | /* This was suggested, but it shouldn't be right for DBX output. -- RMS |
| 54 | #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */ |
| 55 | |
| 56 | \f |
| 57 | /* Define the syntax of labels and symbol definitions/declarations. */ |
| 58 | |
| 59 | /* This is how to output an assembler line |
| 60 | that says to advance the location counter by SIZE bytes. */ |
| 61 | |
| 62 | #define ASM_OUTPUT_SKIP(FILE,SIZE) \ |
| 63 | fprintf (FILE, "\t.space %u\n", (SIZE)) |
| 64 | \f |
| 65 | /* Define the syntax of labels and symbol definitions/declarations. */ |
| 66 | |
| 67 | /* This says how to output an assembler line |
| 68 | to define a global common symbol. */ |
| 69 | |
| 70 | #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ |
| 71 | ( fputs (".comm ", (FILE)), \ |
| 72 | assemble_name ((FILE), (NAME)), \ |
| 73 | fprintf ((FILE), ",%u\n", (ROUNDED))) |
| 74 | |
| 75 | /* This says how to output an assembler line |
| 76 | to define a local common symbol. */ |
| 77 | |
| 78 | #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ |
| 79 | ( fputs (".lcomm ", (FILE)), \ |
| 80 | assemble_name ((FILE), (NAME)), \ |
| 81 | fprintf ((FILE), ",%u\n", (ROUNDED))) |
| 82 | |
| 83 | /* This is how to output an assembler line |
| 84 | that says to advance the location counter |
| 85 | to a multiple of 2**LOG bytes. */ |
| 86 | |
| 87 | #define ASM_OUTPUT_ALIGN(FILE,LOG) \ |
| 88 | if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG)) |
| 89 | |
| 90 | /* This is how to store into the string BUF |
| 91 | the symbol_ref name of an internal numbered label where |
| 92 | PREFIX is the class of label and NUM is the number within the class. |
| 93 | This is suitable for output with `assemble_name'. */ |
| 94 | |
| 95 | #ifdef NO_UNDERSCORES |
| 96 | #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \ |
| 97 | sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER)) |
| 98 | #else |
| 99 | #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \ |
| 100 | sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER)) |
| 101 | #endif |
| 102 | |
| 103 | /* This is how to output an internal numbered label where |
| 104 | PREFIX is the class of label and NUM is the number within the class. */ |
| 105 | |
| 106 | #ifdef NO_UNDERSCORES |
| 107 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ |
| 108 | fprintf (FILE, ".%s%d:\n", PREFIX, NUM) |
| 109 | #else |
| 110 | #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ |
| 111 | fprintf (FILE, "%s%d:\n", PREFIX, NUM) |
| 112 | #endif |
| 113 | |
| 114 | /* This is how to output a reference to a user-level label named NAME. */ |
| 115 | |
| 116 | #ifdef NO_UNDERSCORES |
| 117 | #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME) |
| 118 | #else |
| 119 | #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "_%s", NAME) |
| 120 | #endif /* not NO_UNDERSCORES */ |
| 121 | |
| 122 | /* Sequent has some changes in the format of DBX symbols. */ |
| 123 | #define DBX_NO_XREFS 1 |
| 124 | |
| 125 | /* Don't split DBX symbols into continuations. */ |
| 126 | #define DBX_CONTIN_LENGTH 0 |
| 127 | |
| 128 | /* This is how to output an assembler line defining a `double' constant. */ |
| 129 | |
| 130 | #undef ASM_OUTPUT_DOUBLE |
| 131 | #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ |
| 132 | fprintf (FILE, "\t.double 0d%.20e\n", (VALUE)) |