1 /* Definitions for Intel 386 running DragonFly with ELF format
2 Copyright (C) 2014-2020 Free Software Foundation, Inc.
3 Contributed by John Marino <gnugcc@marino.st>
5 This file is part of GCC.
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)
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.
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.
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/>. */
27 /* Override the default comment-starter of "/". */
28 #undef ASM_COMMENT_START
29 #define ASM_COMMENT_START "#"
32 #define ASM_APP_ON "#APP\n"
35 #define ASM_APP_OFF "#NO_APP\n"
37 #undef DBX_REGISTER_NUMBER
38 #define DBX_REGISTER_NUMBER(n) \
39 (TARGET_64BIT ? dbx64_register_map[n] : svr4_dbx_register_map[n])
41 #undef NO_PROFILE_COUNTERS
42 #define NO_PROFILE_COUNTERS 1
44 /* Tell final.c that we don't need a label passed to mcount. */
47 #define MCOUNT_NAME ".mcount"
49 /* Make gcc agree with <machine/ansi.h>. */
52 #define SIZE_TYPE (TARGET_64BIT ? "long unsigned int" : "unsigned int")
55 #define PTRDIFF_TYPE (TARGET_64BIT ? "long int" : "int")
57 #undef WCHAR_TYPE_SIZE
58 #define WCHAR_TYPE_SIZE (TARGET_64BIT ? 32 : BITS_PER_WORD)
60 #undef SUBTARGET_EXTRA_SPECS /* i386.h bogusly defines it. */
61 #define SUBTARGET_EXTRA_SPECS \
62 { "dfbsd_dynamic_linker", DFBSD_DYNAMIC_LINKER }
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.
68 This is used to align code labels according to Intel recommendations. */
70 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
71 #undef ASM_OUTPUT_MAX_SKIP_ALIGN
72 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
74 if ((MAX_SKIP) == 0 || (MAX_SKIP) >= (1 << (LOG)) - 1) \
75 fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
77 fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
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). */
86 #undef DEFAULT_PCC_STRUCT_RETURN
87 #define DEFAULT_PCC_STRUCT_RETURN 0
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)
94 /* Static stack checking is supported by means of probes. */
95 #define STACK_CHECK_STATIC_BUILTIN 1
97 /* Support for i386 was removed from DragonFly in 2007 */
98 #define SUBTARGET32_DEFAULT_CPU "i486"
100 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack