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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:
1.1.1.2 root 37: #define LIB_SPEC "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} -lc crtn.o%s"
1.1 root 38:
39: /* Special flags for the linker. I don't know what they do. */
40:
1.1.1.3 ! root 41: #define LINK_SPEC "%{K} %{!K:-K} %{T*} %{z:-lm}"
1.1 root 42:
43: /* Specify predefined symbols in preprocessor. */
44:
1.1.1.2 root 45: #define CPP_PREDEFINES "-D_I386 -Di386 -DAIX -D_AIX"
1.1 root 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: #undef ASM_FILE_START
61: #define ASM_FILE_START(FILE) \
1.1.1.3 ! root 62: do { \
! 63: char *p = (char *) strrchr (main_input_filename, '/'); \
! 64: if (!p) \
! 65: p = main_input_filename; \
! 66: else p++; \
! 67: fprintf ((FILE), "\t.file\t\"%s\"\n", p); \
! 68: } while (0)
! 69:
1.1.1.2 root 70: /* This used to output .noopt if nonoptimizing and run ASM_FILE_START_1
71: if optimizing, but that loses with the AIX assembler. */
1.1 root 72:
73: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
74: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
75:
1.1.1.2 root 76: /* We want to output SDB debugging information. */
77:
78: #define SDB_DEBUGGING_INFO
1.1 root 79:
1.1.1.2 root 80: /* We don't want to output DBX debugging information. Becaus IBM AIX dbx
81: use COFF format */
82:
83: #undef DBX_DEBUGGING_INFO
1.1 root 84:
85: /* Implicit library calls should use memcpy, not bcopy, etc. */
86:
87: #define TARGET_MEM_FUNCTIONS
88:
1.1.1.2 root 89: /* Writing `int' for a bitfield forces int alignment for the structure. */
90:
91: #define PCC_BITFIELD_TYPE_MATTERS 1
92:
1.1 root 93: /* Don't write a `.optim' pseudo; this assembler
94: is said to have a bug when .optim is used. */
95:
1.1.1.2 root 96: #if 0
1.1 root 97: #undef ASM_FILE_START_1
98: #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.noopt\n");
1.1.1.2 root 99: #endif
1.1 root 100:
101: /* Machines that use the AT&T assembler syntax
102: also return floating point values in an FP register. */
103: /* Define how to find the value returned by a function.
104: VALTYPE is the data type of the value (as a tree).
105: If the precise function being called is known, FUNC is its FUNCTION_DECL;
106: otherwise, FUNC is 0. */
107:
108: #define VALUE_REGNO(MODE) \
109: (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
110:
111: /* 1 if N is a possible register number for a function value. */
112:
113: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)
1.1.1.2 root 114:
115: /* Output assembler code to FILE to increment profiler label # LABELNO
116: for profiling a function entry. */
117:
118: #undef FUNCTION_PROFILER
119: #define FUNCTION_PROFILER(FILE, LABELNO) \
120: fprintf (FILE, "\tleal %sP%d,%%eax\n\tcall mcount\n", LPREFIX, (LABELNO));
1.1.1.3 ! root 121:
! 122: /* Note that using bss_section here caused errors
! 123: in building shared libraries on system V.3.
! 124: but AIX 1.2 does not have yet shareable libraries on PS2 */
! 125: #undef ASM_OUTPUT_LOCAL
! 126: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
! 127: (bss_section (), \
! 128: ASM_OUTPUT_LABEL ((FILE), (NAME)), \
! 129: fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)))
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