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1/* Target definitions for GCC for Intel 80386 using ELF
2 Copyright (C) 1988-2017 Free Software Foundation, Inc.
3
4 Derived from sysv4.h written by Ron Guilmette (rfg@netcom.com).
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 3, or (at your option)
11any later version.
12
13GCC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING3. If not see
20<http://www.gnu.org/licenses/>. */
21
22/* The ELF ABI for the i386 says that records and unions are returned
23 in memory. */
24
25#define SUBTARGET_RETURN_IN_MEMORY(TYPE, FNTYPE) \
26 (TYPE_MODE (TYPE) == BLKmode \
27 || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8))
28
29#undef CPP_SPEC
30#define CPP_SPEC ""
31
32#define ENDFILE_SPEC "crtend.o%s"
33
34#define STARTFILE_SPEC "%{!shared: \
35 %{!symbolic: \
36 %{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}}\
37 crtbegin.o%s"
38
39#undef DBX_REGISTER_NUMBER
40#define DBX_REGISTER_NUMBER(n) \
41 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
42
43/* The routine used to output sequences of byte values. We use a special
44 version of this for most svr4 targets because doing so makes the
45 generated assembly code more compact (and thus faster to assemble)
46 as well as more readable. Note that if we find subparts of the
47 character sequence which end with NUL (and which are shorter than
48 ELF_STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING. */
49
50#undef ASM_OUTPUT_ASCII
51#define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \
52 do \
53 { \
54 const unsigned char *_ascii_bytes = \
55 (const unsigned char *) (STR); \
56 const unsigned char *limit = _ascii_bytes + (LENGTH); \
57 unsigned bytes_in_chunk = 0; \
58 for (; _ascii_bytes < limit; _ascii_bytes++) \
59 { \
60 const unsigned char *p; \
61 if (bytes_in_chunk >= 64) \
62 { \
63 fputc ('\n', (FILE)); \
64 bytes_in_chunk = 0; \
65 } \
66 for (p = _ascii_bytes; p < limit && *p != '\0'; p++) \
67 continue; \
68 if (p < limit && (p - _ascii_bytes) <= (long) ELF_STRING_LIMIT) \
69 { \
70 if (bytes_in_chunk > 0) \
71 { \
72 fputc ('\n', (FILE)); \
73 bytes_in_chunk = 0; \
74 } \
75 ASM_OUTPUT_LIMITED_STRING ((FILE), (const char *) _ascii_bytes); \
76 _ascii_bytes = p; \
77 } \
78 else \
79 { \
80 if (bytes_in_chunk == 0) \
81 fputs (ASM_BYTE, (FILE)); \
82 else \
83 fputc (',', (FILE)); \
84 fprintf ((FILE), "0x%02x", *_ascii_bytes); \
85 bytes_in_chunk += 5; \
86 } \
87 } \
88 if (bytes_in_chunk > 0) \
89 fputc ('\n', (FILE)); \
90 } \
91 while (0)
92
93#define LOCAL_LABEL_PREFIX "."
94
95/* Switch into a generic section. */
96#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
97
98#undef BSS_SECTION_ASM_OP
99#define BSS_SECTION_ASM_OP "\t.section\t.bss"
100
101#undef ASM_OUTPUT_ALIGNED_BSS
102#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
103 asm_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN)
104

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