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af680fe2 | 1 | /* Definitions of target machine for GCC, |
f406b863 | 2 | for i386/ELF NetBSD systems. |
fbd26352 | 3 | Copyright (C) 2001-2019 Free Software Foundation, Inc. |
f406b863 | 4 | Contributed by matthew green <mrg@eterna.com.au> |
5 | ||
af680fe2 | 6 | This file is part of GCC. |
f406b863 | 7 | |
af680fe2 | 8 | GCC is free software; you can redistribute it and/or modify |
f406b863 | 9 | it under the terms of the GNU General Public License as published by |
038d1e19 | 10 | the Free Software Foundation; either version 3, or (at your option) |
f406b863 | 11 | any later version. |
12 | ||
af680fe2 | 13 | GCC is distributed in the hope that it will be useful, |
f406b863 | 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
038d1e19 | 19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
f406b863 | 21 | |
415e4dbd | 22 | #define TARGET_OS_CPP_BUILTINS() \ |
23 | do \ | |
24 | { \ | |
25 | NETBSD_OS_CPP_BUILTINS_ELF(); \ | |
26 | } \ | |
27 | while (0) | |
28 | ||
f406b863 | 29 | |
70e6fa67 | 30 | /* Extra specs needed for NetBSD/i386 ELF. */ |
f406b863 | 31 | |
415e4dbd | 32 | #undef SUBTARGET_EXTRA_SPECS |
33 | #define SUBTARGET_EXTRA_SPECS \ | |
70e6fa67 | 34 | { "netbsd_cpp_spec", NETBSD_CPP_SPEC }, \ |
35 | { "netbsd_entry_point", NETBSD_ENTRY_POINT }, | |
36 | ||
37 | ||
38 | /* Provide a LINK_SPEC appropriate for a NetBSD/i386 ELF target. */ | |
39 | ||
40 | #undef LINK_SPEC | |
41 | #define LINK_SPEC NETBSD_LINK_SPEC_ELF | |
42 | ||
43 | #define NETBSD_ENTRY_POINT "__start" | |
44 | ||
f406b863 | 45 | |
415e4dbd | 46 | /* Provide a CPP_SPEC appropriate for NetBSD. */ |
93528070 | 47 | |
48 | #undef CPP_SPEC | |
d9d8b700 | 49 | #define CPP_SPEC "%(netbsd_cpp_spec)" |
93528070 | 50 | |
51 | ||
f406b863 | 52 | /* Make gcc agree with <machine/ansi.h> */ |
53 | ||
54 | #undef SIZE_TYPE | |
55 | #define SIZE_TYPE "unsigned int" | |
56 | ||
57 | #undef PTRDIFF_TYPE | |
58 | #define PTRDIFF_TYPE "int" | |
59 | ||
f406b863 | 60 | #undef ASM_APP_ON |
61 | #define ASM_APP_ON "#APP\n" | |
62 | ||
63 | #undef ASM_APP_OFF | |
64 | #define ASM_APP_OFF "#NO_APP\n" | |
65 | ||
4ace673e | 66 | #undef ASM_COMMENT_START |
67 | #define ASM_COMMENT_START "#" | |
f406b863 | 68 | |
69 | #undef DBX_REGISTER_NUMBER | |
70 | #define DBX_REGISTER_NUMBER(n) svr4_dbx_register_map[n] | |
71 | ||
4ace673e | 72 | |
73 | /* Output assembler code to FILE to call the profiler. */ | |
74 | ||
75 | #undef NO_PROFILE_COUNTERS | |
527d5be8 | 76 | #define NO_PROFILE_COUNTERS 1 |
f406b863 | 77 | |
4ace673e | 78 | #undef FUNCTION_PROFILER |
79 | #define FUNCTION_PROFILER(FILE, LABELNO) \ | |
80 | { \ | |
81 | if (flag_pic) \ | |
82 | fprintf (FILE, "\tcall __mcount@PLT\n"); \ | |
83 | else \ | |
84 | fprintf (FILE, "\tcall __mcount\n"); \ | |
85 | } | |
86 | ||
87 | ||
f406b863 | 88 | #undef HAS_INIT_SECTION |
89 | ||
f406b863 | 90 | /* This is how we tell the assembler that two symbols have the same value. */ |
91 | ||
92 | #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ | |
93 | do { assemble_name(FILE, NAME1); \ | |
94 | fputs(" = ", FILE); \ | |
95 | assemble_name(FILE, NAME2); \ | |
96 | fputc('\n', FILE); } while (0) | |
97 | ||
98 | /* A C statement to output to the stdio stream FILE an assembler | |
99 | command to advance the location counter to a multiple of 1<<LOG | |
100 | bytes if it is within MAX_SKIP bytes. | |
101 | ||
102 | This is used to align code labels according to Intel recommendations. */ | |
103 | ||
104 | #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN | |
4ace673e | 105 | #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ |
106 | if ((LOG) != 0) { \ | |
bc9f52f5 | 107 | if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ |
108 | fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
109 | else \ | |
110 | fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
f406b863 | 111 | } |
112 | #endif | |
113 | ||
4ace673e | 114 | /* We always use gas here, so we don't worry about ECOFF assembler |
115 | problems. */ | |
f406b863 | 116 | #undef TARGET_GAS |
117 | #define TARGET_GAS 1 | |
118 | ||
119 | /* Default to pcc-struct-return, because this is the ELF abi and | |
120 | we don't care about compatibility with older gcc versions. */ | |
121 | #define DEFAULT_PCC_STRUCT_RETURN 1 | |
122 | ||
a6f06169 | 123 | #define HAVE_ENABLE_EXECUTE_STACK |