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188fc5b5 | 1 | /* Target definitions for GCC for Intel 80386 using ELF |
2f83c7d6 | 2 | Copyright (C) 1988, 1991, 1995, 2000, 2001, 2002, 2007 |
39ed301b | 3 | Free Software Foundation, Inc. |
9b5c756a JL |
4 | |
5 | Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com). | |
6 | ||
188fc5b5 | 7 | This file is part of GCC. |
9b5c756a | 8 | |
188fc5b5 | 9 | GCC is free software; you can redistribute it and/or modify |
9b5c756a | 10 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 11 | the Free Software Foundation; either version 3, or (at your option) |
9b5c756a JL |
12 | any later version. |
13 | ||
188fc5b5 | 14 | GCC is distributed in the hope that it will be useful, |
9b5c756a JL |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
2f83c7d6 NC |
20 | along with GCC; see the file COPYING3. If not see |
21 | <http://www.gnu.org/licenses/>. */ | |
9b5c756a JL |
22 | |
23 | /* Use stabs instead of DWARF debug format. */ | |
f6e0c56c | 24 | #undef PREFERRED_DEBUGGING_TYPE |
9b5c756a JL |
25 | #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG |
26 | ||
9b5c756a JL |
27 | #define TARGET_VERSION fprintf (stderr, " (i386 bare ELF target)"); |
28 | ||
db80ee8e | 29 | /* The ELF ABI for the i386 says that records and unions are returned |
9b5c756a JL |
30 | in memory. */ |
31 | ||
32 | #undef RETURN_IN_MEMORY | |
33 | #define RETURN_IN_MEMORY(TYPE) \ | |
a7180f70 BS |
34 | (TYPE_MODE (TYPE) == BLKmode \ |
35 | || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8)) | |
9b5c756a | 36 | |
9b5c756a | 37 | #undef CPP_SPEC |
1ba7b414 | 38 | #define CPP_SPEC "" |
9b5c756a | 39 | |
aa97fdf3 DB |
40 | #define ENDFILE_SPEC "crtend.o%s" |
41 | ||
42 | #define STARTFILE_SPEC "%{!shared: \ | |
43 | %{!symbolic: \ | |
44 | %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\ | |
45 | crtbegin.o%s" | |
46 | ||
9b5c756a | 47 | #undef DBX_REGISTER_NUMBER |
0f7fa3d0 JH |
48 | #define DBX_REGISTER_NUMBER(n) \ |
49 | (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) | |
9b5c756a JL |
50 | |
51 | /* The routine used to output sequences of byte values. We use a special | |
52 | version of this for most svr4 targets because doing so makes the | |
53 | generated assembly code more compact (and thus faster to assemble) | |
54 | as well as more readable. Note that if we find subparts of the | |
55 | character sequence which end with NUL (and which are shorter than | |
56 | STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */ | |
57 | ||
58 | #undef ASM_OUTPUT_ASCII | |
59 | #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ | |
60 | do \ | |
61 | { \ | |
8d531ab9 | 62 | const unsigned char *_ascii_bytes = \ |
3cce094d | 63 | (const unsigned char *) (STR); \ |
8d531ab9 KH |
64 | const unsigned char *limit = _ascii_bytes + (LENGTH); \ |
65 | unsigned bytes_in_chunk = 0; \ | |
9b5c756a JL |
66 | for (; _ascii_bytes < limit; _ascii_bytes++) \ |
67 | { \ | |
8d531ab9 | 68 | const unsigned char *p; \ |
9b5c756a JL |
69 | if (bytes_in_chunk >= 64) \ |
70 | { \ | |
71 | fputc ('\n', (FILE)); \ | |
72 | bytes_in_chunk = 0; \ | |
73 | } \ | |
74 | for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \ | |
75 | continue; \ | |
9d955c3a | 76 | if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT) \ |
9b5c756a JL |
77 | { \ |
78 | if (bytes_in_chunk > 0) \ | |
79 | { \ | |
80 | fputc ('\n', (FILE)); \ | |
81 | bytes_in_chunk = 0; \ | |
82 | } \ | |
83 | ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes); \ | |
84 | _ascii_bytes = p; \ | |
85 | } \ | |
86 | else \ | |
87 | { \ | |
88 | if (bytes_in_chunk == 0) \ | |
89 | fprintf ((FILE), "\t.byte\t"); \ | |
90 | else \ | |
91 | fputc (',', (FILE)); \ | |
92 | fprintf ((FILE), "0x%02x", *_ascii_bytes); \ | |
93 | bytes_in_chunk += 5; \ | |
94 | } \ | |
95 | } \ | |
96 | if (bytes_in_chunk > 0) \ | |
97 | fprintf ((FILE), "\n"); \ | |
98 | } \ | |
99 | while (0) | |
100 | ||
9b5c756a JL |
101 | #define LOCAL_LABEL_PREFIX "." |
102 | ||
7c262518 RH |
103 | /* Switch into a generic section. */ |
104 | #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section | |
9b5c756a JL |
105 | |
106 | /* If defined, a C expression whose value is a string containing the | |
107 | assembler operation to identify the following data as | |
108 | uninitialized global data. If not defined, and neither | |
109 | `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined, | |
110 | uninitialized global data will be output in the data section if | |
111 | `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be | |
112 | used. */ | |
113 | #undef BSS_SECTION_ASM_OP | |
71d48a01 | 114 | #define BSS_SECTION_ASM_OP "\t.section\t.bss" |
9b5c756a JL |
115 | |
116 | /* Like `ASM_OUTPUT_BSS' except takes the required alignment as a | |
117 | separate, explicit argument. If you define this macro, it is used | |
118 | in place of `ASM_OUTPUT_BSS', and gives you more flexibility in | |
119 | handling the required alignment of the variable. The alignment is | |
120 | specified as the number of bits. | |
121 | ||
122 | Try to use function `asm_output_aligned_bss' defined in file | |
892a2d68 | 123 | `varasm.c' when defining this macro. */ |
9b5c756a JL |
124 | #undef ASM_OUTPUT_ALIGNED_BSS |
125 | #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ | |
126 | asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) |