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 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 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 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)) 133