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1.1 root 1: /* Definitions for AT&T assembler syntax for the Intel 80386.
2: Copyright (C) 1988 Free Software Foundation, Inc.
3:
4: This file is part of GNU CC.
5:
1.1.1.4 ! root 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:
1.1 root 11: GNU CC is distributed in the hope that it will be useful,
1.1.1.4 ! root 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. */
1.1 root 19:
20:
1.1.1.3 root 21: #define TARGET_VERSION fprintf (stderr, " (80386, ATT syntax)");
1.1 root 22:
23: /* Define the syntax of instructions and addresses. */
24:
25: /* Define some concatenation macros to concatenate an opcode
26: and one, two or three operands. In other assembler syntaxes
27: they may alter the order of ther operands. */
28:
29: #ifdef __STDC__
30: #define AS2(a,b,c) #a " " #b "," #c
31: #define AS3(a,b,c,d) #a " " #b "," #c "," #d
32: #define AS1(a,b) #a " " #b
33: #else
34: #define AS1(a,b) "a b"
35: #define AS2(a,b,c) "a b,c"
36: #define AS3(a,b,c,d) "a b,c,d"
37: #endif
38:
39: /* Output the size-letter for an opcode.
40: CODE is the letter used in an operand spec (L, B, W, S or Q).
41: CH is the corresponding lower case letter
42: (except if CODE is L then CH is `l'). */
43: #define PUT_OP_SIZE(CODE,CH,FILE) putc (CH,(FILE))
44:
45: /* Opcode suffix for fullword insn. */
46: #define L_SIZE "l"
47:
48: /* Prefix for register names in this syntax. */
49: #define RP "%"
50:
51: /* Prefix for immediate operands in this syntax. */
52: #define IP "$"
53:
54: /* Prefix for internally generated assembler labels. */
55: #define LPREFIX ".L"
56:
57: /* Output the prefix for an immediate operand, or for an offset operand. */
58: #define PRINT_IMMED_PREFIX(FILE) fputs ("$", (FILE))
59: #define PRINT_OFFSET_PREFIX(FILE) fputs ("$", (FILE))
60:
61: /* Indirect call instructions should use `*'. */
62: #define USE_STAR 1
63:
64: /* Prefix for a memory-operand X. */
65: #define PRINT_PTR(X, FILE)
66:
67: /* Delimiters that surround base reg and index reg. */
68: #define ADDR_BEG(FILE) putc('(', (FILE))
69: #define ADDR_END(FILE) putc(')', (FILE))
70:
71: /* Print an index register (whose rtx is IREG). */
72: #define PRINT_IREG(FILE,IREG) \
73: do \
74: { fputs (",", (FILE)); PRINT_REG ((IREG), 0, (FILE)); } \
75: while (0)
76:
77: /* Print an index scale factor SCALE. */
78: #define PRINT_SCALE(FILE,SCALE) \
79: if ((SCALE) != 1) fprintf ((FILE), ",%d", (SCALE))
80:
81: /* Print a base/index combination.
82: BREG is the base reg rtx, IREG is the index reg rtx,
83: and SCALE is the index scale factor (an integer). */
84:
85: #define PRINT_B_I_S(BREG,IREG,SCALE,FILE) \
86: { ADDR_BEG (FILE); \
87: if (BREG) PRINT_REG ((BREG), 0, (FILE)); \
88: if ((IREG) != 0) \
89: { PRINT_IREG ((FILE), (IREG)); \
90: PRINT_SCALE ((FILE), (SCALE)); } \
91: ADDR_END (FILE); }
92:
93: /* Define the syntax of pseudo-ops, labels and comments. */
94:
95: /* Assembler pseudos to introduce constants of various size. */
96:
97: #define ASM_BYTE "\t.byte "
98: #define ASM_SHORT "\t.value "
99: #define ASM_LONG "\t.long "
100: #define ASM_DOUBLE "\t.double "
101:
102: /* String containing the assembler's comment-starter. */
103:
104: #define COMMENT_BEGIN "/"
105:
106: /* Output at beginning of assembler file. */
1.1.1.2 root 107: /* The .file command should always begin the output. */
1.1 root 108:
109: #undef ASM_FILE_START
110: #define ASM_FILE_START(FILE) \
1.1.1.2 root 111: do { sdbout_filename ((FILE), main_input_filename); \
112: if (optimize) ASM_FILE_START_1 (FILE); \
1.1 root 113: } while (0)
114:
115: #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.optim\n")
116:
117: /* Output to assembler file text saying following lines
118: may contain character constants, extra white space, comments, etc. */
119:
120: #define ASM_APP_ON "/APP\n"
121:
122: /* Output to assembler file text saying following lines
123: no longer contain unusual constructs. */
124:
125: #define ASM_APP_OFF "/NO_APP\n"
126:
127: /* This is how to output an assembler line
128: that says to advance the location counter
129: to a multiple of 2**LOG bytes. */
130:
131: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
132: if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
133:
134: /* This is how to output an assembler line
135: that says to advance the location counter by SIZE bytes. */
136:
137: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
138: fprintf ((FILE), "\t.set .,.+%d\n", (SIZE))
139:
140: /* Output before read-only data. */
141:
142: #define TEXT_SECTION_ASM_OP ".text"
143:
144: /* Output before writable data. */
145:
146: #define DATA_SECTION_ASM_OP ".data"
147:
148: /* Define the syntax of labels and symbol definitions/declarations. */
149:
150: /* This says how to output an assembler line
151: to define a global common symbol. */
152:
1.1.1.2 root 153: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
1.1 root 154: ( fputs (".comm ", (FILE)), \
155: assemble_name ((FILE), (NAME)), \
156: fprintf ((FILE), ",%d\n", (SIZE)))
157:
158: /* This says how to output an assembler line
159: to define a local common symbol. */
160:
1.1.1.2 root 161: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
1.1 root 162: (data_section (), \
163: ASM_OUTPUT_LABEL ((FILE), (NAME)), \
164: fprintf ((FILE), "\t.set .,.+%d\n", (SIZE)))
165:
166: /* This is how to store into the string BUF
167: the symbol_ref name of an internal numbered label where
168: PREFIX is the class of label and NUM is the number within the class.
169: This is suitable for output with `assemble_name'. */
170:
171: #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
172: sprintf ((BUF), ".%s%d", (PREFIX), (NUMBER))
173:
174: /* This is how to output a reference to a user-level label named NAME. */
175:
176: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
177: fprintf (FILE, "%s", NAME)
178:
179: /* This is how to output an internal numbered label where
180: PREFIX is the class of label and NUM is the number within the class. */
181:
182: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
183: fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
184:
185: /* This is how to output a command to make the user-level label named NAME
186: defined for reference from other files. */
187:
188: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
189: (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
1.1.1.2 root 190:
191: /* How to output an ASCII string constant. */
192:
193: #define ASM_OUTPUT_ASCII(FILE, p, size) \
194: { int i=0; \
195: while (i < size) \
196: { if (i%10 == 0) { if (i!=0) fprintf (FILE, "\n"); \
197: fprintf (FILE, ASM_BYTE); } \
198: else fprintf (FILE, ","); \
199: fprintf (FILE, "0x%x",(p[i++] & 0377)) ;} \
200: fprintf (FILE, "\n"); }
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