![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to gas.h CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [GCC 2.x] / gcc / config / i386|
Return to gas.h CVS log | Up to [GCC 2.x] / gcc / config / i386 |
1.1 root 1: /* Definitions for Intel 386 running system V with gnu tools
1.1.1.2 root 2: Copyright (C) 1988, 1993, 1994 Free Software Foundation, Inc.
1.1 root 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 2, 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
1.1.1.3 ! root 18: the Free Software Foundation, 59 Temple Place - Suite 330,
! 19: Boston, MA 02111-1307, USA. */
1.1 root 20:
21: /* Note that i386/seq-gas.h is a GAS configuration that does not use this
22: file. */
23:
24: #include "i386/i386.h"
25:
26: #ifndef YES_UNDERSCORES
27: /* Define this now, because i386/bsd.h tests it. */
28: #define NO_UNDERSCORES
29: #endif
30:
31: /* Use the bsd assembler syntax. */
32: /* we need to do this because gas is really a bsd style assembler,
33: * and so doesn't work well this these att-isms:
34: *
35: * ASM_OUTPUT_SKIP is .set .,.+N, which isn't implemented in gas
36: * ASM_OUTPUT_LOCAL is done with .set .,.+N, but that can't be
37: * used to define bss static space
38: *
39: * Next is the question of whether to uses underscores. RMS didn't
40: * like this idea at first, but since it is now obvious that we
41: * need this separate tm file for use with gas, at least to get
42: * dbx debugging info, I think we should also switch to underscores.
43: * We can keep i386v for real att style output, and the few
44: * people who want both form will have to compile twice.
45: */
46:
47: #include "i386/bsd.h"
48:
49: /* these come from i386/bsd.h, but are specific to sequent */
50: #undef DBX_NO_XREFS
51: #undef DBX_CONTIN_LENGTH
52:
53: /* Ask for COFF symbols. */
54:
55: #define SDB_DEBUGGING_INFO
56:
57: /* Specify predefined symbols in preprocessor. */
58:
1.1.1.2 root 59: #define CPP_PREDEFINES "-Dunix -Di386 -Asystem(unix) -Acpu(i386) -Amachine(i386)"
1.1 root 60: #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
61:
62: /* Allow #sccs in preprocessor. */
63:
64: #define SCCS_DIRECTIVE
65:
66: /* Output #ident as a .ident. */
67:
68: #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
69:
70: /* Implicit library calls should use memcpy, not bcopy, etc. */
71:
72: #define TARGET_MEM_FUNCTIONS
73:
74: #if 0 /* People say gas uses the log as the arg to .align. */
75: /* When using gas, .align N aligns to an N-byte boundary. */
76:
77: #undef ASM_OUTPUT_ALIGN
78: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
79: if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
80: #endif
81:
82: /* Align labels, etc. at 4-byte boundaries.
83: For the 486, align to 16-byte boundary for sake of cache. */
84:
85: #undef ASM_OUTPUT_ALIGN_CODE
1.1.1.3 ! root 86: #define ASM_OUTPUT_ALIGN_CODE(FILE) \
! 87: fprintf ((FILE), "\t.align %d,0x90\n", i386_align_jumps)
1.1 root 88:
89: /* Align start of loop at 4-byte boundary. */
90:
91: #undef ASM_OUTPUT_LOOP_ALIGN
92: #define ASM_OUTPUT_LOOP_ALIGN(FILE) \
1.1.1.3 ! root 93: fprintf ((FILE), "\t.align %d,0x90\n", i386_align_loops)
! 94:
1.1 root 95:
96: /* A C statement or statements which output an assembler instruction
97: opcode to the stdio stream STREAM. The macro-operand PTR is a
98: variable of type `char *' which points to the opcode name in its
99: "internal" form--the form that is written in the machine description.
100:
101: GAS version 1.38.1 doesn't understand the `repz' opcode mnemonic.
102: So use `repe' instead. */
103:
104: #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
105: { \
106: if ((PTR)[0] == 'r' \
107: && (PTR)[1] == 'e' \
108: && (PTR)[2] == 'p') \
109: { \
110: if ((PTR)[3] == 'z') \
111: { \
112: fprintf (STREAM, "repe"); \
113: (PTR) += 4; \
114: } \
115: else if ((PTR)[3] == 'n' && (PTR)[4] == 'z') \
116: { \
117: fprintf (STREAM, "repne"); \
118: (PTR) += 5; \
119: } \
120: } \
121: }
122:
123: /* Define macro used to output shift-double opcodes when the shift
124: count is in %cl. Some assemblers require %cl as an argument;
125: some don't.
126:
127: GAS requires the %cl argument, so override i386/unix.h. */
128:
129: #undef AS3_SHIFT_DOUBLE
130: #define AS3_SHIFT_DOUBLE(a,b,c,d) AS3 (a,b,c,d)
131:
132: /* Print opcodes the way that GAS expects them. */
133: #define GAS_MNEMONICS 1
134:
135: #ifdef NO_UNDERSCORES /* If user-symbols don't have underscores,
136: then it must take more than `L' to identify
137: a label that should be ignored. */
138:
139: /* This is how to store into the string BUF
140: the symbol_ref name of an internal numbered label where
141: PREFIX is the class of label and NUM is the number within the class.
142: This is suitable for output with `assemble_name'. */
143:
144: #undef ASM_GENERATE_INTERNAL_LABEL
145: #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
146: sprintf ((BUF), ".%s%d", (PREFIX), (NUMBER))
147:
148: /* This is how to output an internal numbered label where
149: PREFIX is the class of label and NUM is the number within the class. */
150:
151: #undef ASM_OUTPUT_INTERNAL_LABEL
152: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
153: fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
154:
155: #endif /* NO_UNDERSCORES */
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.