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dbed5a9b | 1 | /* Definitions for Intel 386 running DragonFly with ELF format |
85ec4feb | 2 | Copyright (C) 2014-2018 Free Software Foundation, Inc. |
dbed5a9b JM |
3 | Contributed by John Marino <gnugcc@marino.st> |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC 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 3, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GCC 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 | Under Section 7 of GPL version 3, you are granted additional | |
18 | permissions described in the GCC Runtime Library Exception, version | |
19 | 3.1, as published by the Free Software Foundation. | |
20 | ||
21 | You should have received a copy of the GNU General Public License and | |
22 | a copy of the GCC Runtime Library Exception along with this program; | |
23 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
24 | <http://www.gnu.org/licenses/>. */ | |
25 | ||
26 | ||
27 | /* Override the default comment-starter of "/". */ | |
28 | #undef ASM_COMMENT_START | |
29 | #define ASM_COMMENT_START "#" | |
30 | ||
31 | #undef ASM_APP_ON | |
32 | #define ASM_APP_ON "#APP\n" | |
33 | ||
34 | #undef ASM_APP_OFF | |
35 | #define ASM_APP_OFF "#NO_APP\n" | |
36 | ||
37 | #undef DBX_REGISTER_NUMBER | |
38 | #define DBX_REGISTER_NUMBER(n) \ | |
39 | (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n]) | |
40 | ||
41 | #undef NO_PROFILE_COUNTERS | |
42 | #define NO_PROFILE_COUNTERS 1 | |
43 | ||
44 | /* Tell final.c that we don't need a label passed to mcount. */ | |
45 | ||
46 | #undef MCOUNT_NAME | |
47 | #define MCOUNT_NAME ".mcount" | |
48 | ||
49 | /* Make gcc agree with <machine/ansi.h>. */ | |
50 | ||
51 | #undef SIZE_TYPE | |
52 | #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int") | |
53 | ||
54 | #undef PTRDIFF_TYPE | |
55 | #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int") | |
56 | ||
57 | #undef WCHAR_TYPE_SIZE | |
58 | #define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD) | |
59 | ||
60 | #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */ | |
61 | #define SUBTARGET_EXTRA_SPECS \ | |
62 | { "dfbsd_dynamic_linker", DFBSD_DYNAMIC_LINKER } | |
63 | ||
64 | /* A C statement to output to the stdio stream FILE an assembler | |
65 | command to advance the location counter to a multiple of 1<<LOG | |
66 | bytes if it is within MAX_SKIP bytes. | |
67 | ||
68 | This is used to align code labels according to Intel recommendations. */ | |
69 | ||
70 | #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN | |
71 | #undef ASM_OUTPUT_MAX_SKIP_ALIGN | |
dd047c67 DV |
72 | #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \ |
73 | if ((LOG) != 0) { \ | |
74 | if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \ | |
75 | fprintf ((FILE), "\t.p2align %d\n", (LOG)); \ | |
76 | else \ | |
77 | fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \ | |
dbed5a9b JM |
78 | } |
79 | #endif | |
80 | ||
81 | /* Don't default to pcc-struct-return, we want to retain compatibility with | |
82 | older gcc versions AND pcc-struct-return is nonreentrant. | |
83 | (even though the SVR4 ABI for the i386 says that records and unions are | |
84 | returned in memory). */ | |
85 | ||
86 | #undef DEFAULT_PCC_STRUCT_RETURN | |
87 | #define DEFAULT_PCC_STRUCT_RETURN 0 | |
88 | ||
89 | /* DragonFly sets the rounding precision of the FPU to 53 bits. Let the | |
90 | compiler get the contents of <float.h> and std::numeric_limits correct. */ | |
91 | #undef TARGET_96_ROUND_53_LONG_DOUBLE | |
92 | #define TARGET_96_ROUND_53_LONG_DOUBLE (!TARGET_64BIT) | |
93 | ||
dbed5a9b JM |
94 | /* Static stack checking is supported by means of probes. */ |
95 | #define STACK_CHECK_STATIC_BUILTIN 1 | |
96 | ||
97 | /* Support for i386 was removed from DragonFly in 2007 */ | |
98 | #define SUBTARGET32_DEFAULT_CPU "i486" | |
99 | ||
100 | #define TARGET_ASM_FILE_END file_end_indicate_exec_stack |