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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 1, 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 "tm-i386.h"
23:
24: /* Use the ATT assembler syntax. */
25:
26: #include "tm-att386.h"
27:
28: /* By default, target has a 80387. */
29:
30: #define TARGET_DEFAULT 1
31:
32: /* Use crt1.o as a startup file and crtn.o as a closing file. */
33:
34: #define STARTFILE_SPEC \
35: "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
36:
37: #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} crtn.o%s"
38:
39: /* Special flags for the linker. I don't know what they do. */
40:
41: #define LINK_SPEC "%{!K:-K} %{!T*:-T0x00400000} %{lg} %{g} %{z:-lm}"
42:
43: /* Specify predefined symbols in preprocessor. */
44:
45: #define CPP_PREDEFINES "-Dunix -Di386 -DAIX"
46:
47: /* special flags for the aix assembler to generate the short form for all
48: qualifying forward reference */
49:
50: #define ASM_SPEC "-s2"
51:
52: /* Allow #sccs in preprocessor. */
53:
54: #define SCCS_DIRECTIVE
55:
56: /* Output #ident as a .ident. */
57:
58: #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
59:
60: /* We don't want to output SDB debugging information. */
61:
62: #undef SDB_DEBUGGING_INFO
63: #undef ASM_FILE_START
64: #define ASM_FILE_START(FILE) \
65: do { fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name); \
66: if (optimize) ASM_FILE_START_1 (FILE); \
67: } while (0)
68:
69: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
70: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
71:
72: /* This is IBM AIX, it has a DBX debugger */
73:
74: #define DBX_DEBUGGING_INFO
75:
76: /* Implicit library calls should use memcpy, not bcopy, etc. */
77:
78: #define TARGET_MEM_FUNCTIONS
79:
80: /* Don't write a `.optim' pseudo; this assembler
81: is said to have a bug when .optim is used. */
82:
83: #undef ASM_FILE_START_1
84: #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.noopt\n");
85:
86: /* Machines that use the AT&T assembler syntax
87: also return floating point values in an FP register. */
88: /* Define how to find the value returned by a function.
89: VALTYPE is the data type of the value (as a tree).
90: If the precise function being called is known, FUNC is its FUNCTION_DECL;
91: otherwise, FUNC is 0. */
92:
93: #define VALUE_REGNO(MODE) \
94: (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
95:
96: /* 1 if N is a possible register number for a function value. */
97:
98: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)
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