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1.1 root 1: /* Definitions for IBM PS2 running AIX/386.
2: From: Minh Tran-Le <[email protected]>
3: Copyright (C) 1988 Free Software Foundation, Inc.
4:
5: This file is part of GNU CC.
6:
7: GNU CC is free software; you can redistribute it and/or modify
8: it under the terms of the GNU General Public License as published by
9: the Free Software Foundation; either version 2, or (at your option)
10: any later version.
11:
12: GNU CC is distributed in the hope that it will be useful,
13: but WITHOUT ANY WARRANTY; without even the implied warranty of
14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: GNU General Public License for more details.
16:
17: You should have received a copy of the GNU General Public License
18: along with GNU CC; see the file COPYING. If not, write to
19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20:
21:
22: #include "i386/i386.h"
23:
24: /* Get the generic definitions for system V.3. */
25:
26: #include "svr3.h"
27:
28: /* Use the ATT assembler syntax.
29: This overrides at least one macro (ASM_OUTPUT_LABELREF) from svr3.h. */
30:
31: #include "i386/att.h"
32:
33: /* Use crt1.o as a startup file and crtn.o as a closing file. */
34:
35: #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
36: #define ENDFILE_SPEC "crtn.o%s"
37:
38: #define LIB_SPEC "%{shlib:-lc_s} -lc"
39:
40: /* Special flags for the linker. I don't know what they do. */
41:
42: #define LINK_SPEC "%{K} %{!K:-K} %{T*} %{z:-lm}"
43:
44: /* Specify predefined symbols in preprocessor. */
45:
46: #define CPP_PREDEFINES "-Dps2 -Dunix -Di386"
47:
48: #define CPP_SPEC \
49: "%{posix:-D_POSIX_SOURCE}%{!posix:-DAIX} -D_I386 -D_AIX -D_MBCS"
50:
51: /* special flags for the aix assembler to generate the short form for all
52: qualifying forward reference */
53: /* The buggy /bin/as of aix ps/2 1.2.x cannot always handle it. */
54: #if 0
55: #define ASM_SPEC "-s2"
56: #endif /* 0 */
57:
58: #undef ASM_FILE_START
59: #define ASM_FILE_START(FILE) \
60: do { fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name); \
61: if (optimize) \
62: ASM_FILE_START_1 (FILE); \
63: else \
64: fprintf (FILE, "\t.noopt\n"); \
65: } while (0)
66:
67: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
68: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
69:
70: /* Writing `int' for a bitfield forces int alignment for the structure. */
71:
72: #define PCC_BITFIELD_TYPE_MATTERS 1
73:
74: #ifndef USE_GAS
75: /* Don't write a `.optim' pseudo; this assembler
76: is said to have a bug when .optim is used. */
77:
78: #undef ASM_FILE_START_1
79: #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.noopt\n")
80: #endif
81:
82: /* Output assembler code to FILE to increment profiler label # LABELNO
83: for profiling a function entry. */
84:
85: #undef FUNCTION_PROFILER
86: #define FUNCTION_PROFILER(FILE, LABELNO) \
87: fprintf (FILE, "\tleal %sP%d,%%eax\n\tcall mcount\n", LPREFIX, (LABELNO));
88:
89: /* Note that using bss_section here caused errors
90: in building shared libraries on system V.3.
91: but AIX 1.2 does not have yet shareable libraries on PS2 */
92: #undef ASM_OUTPUT_LOCAL
93: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
94: (bss_section (), \
95: ASM_OUTPUT_LABEL ((FILE), (NAME)), \
96: fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)))
97:
98:
99: /* Undef all the .init and .fini section stuff if we are not using gas and
100: * gnu ld so that we can use collect because the standard /bin/as and /bin/ld
101: * cannot handle those.
102: */
103: #ifndef USE_GAS
104: # undef INIT_SECTION_ASM_OP
105: # undef FINI_SECTION_ASM_OP
106: # undef CTORS_SECTION_ASM_OP
107: # undef DTORS_SECTION_ASM_OP
108: # undef ASM_OUTPUT_CONSTRUCTOR
109: # undef ASM_OUTPUT_DESTRUCTOR
110: # undef DO_GLOBAL_CTORS_BODY
111:
112: # undef CTOR_LIST_BEGIN
113: # define CTOR_LIST_BEGIN
114: # undef CTOR_LIST_END
115: # define CTOR_LIST_END
116: # undef DTOR_LIST_BEGIN
117: # define DTOR_LIST_BEGIN
118: # undef DTOR_LIST_END
119: # define DTOR_LIST_END
120:
121: # undef CONST_SECTION_FUNCTION
122: # define CONST_SECTION_FUNCTION \
123: void \
124: const_section () \
125: { \
126: extern void text_section(); \
127: text_section(); \
128: }
129:
130: # undef EXTRA_SECTION_FUNCTIONS
131: # define EXTRA_SECTION_FUNCTIONS \
132: CONST_SECTION_FUNCTION \
133: BSS_SECTION_FUNCTION
134:
135: /* for collect2 */
136: # define OBJECT_FORMAT_COFF
137: # define MY_ISCOFF(magic) \
138: ((magic) == I386MAGIC || (magic) == I386SVMAGIC)
139:
140: #endif /* !USE_GAS */
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