1 /* Definitions for Intel 386 running DragonFly with ELF format
2 Copyright (C) 1996, 2000, 2002, 2004, 2007 Free Software Foundation, Inc.
3 Contributed by Eric Youngdale.
4 Modified for stabs-in-ELF by H.J. Lu.
5 Adapted from GNU/Linux version by John Polstra.
6 Continued development by David O'Brien <obrien@freebsd.org>
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3, or (at your option)
15 GCC is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING3. If not see
22 <http://www.gnu.org/licenses/>. */
25 #define TARGET_VERSION fprintf (stderr, " (i386 DragonFly/ELF)");
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 }
65 /* A C statement to output to the stdio stream FILE an assembler
66 command to advance the location counter to a multiple of 1<<LOG
67 bytes if it is within MAX_SKIP bytes.
69 This is used to align code labels according to Intel recommendations. */
71 #ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
72 #undef ASM_OUTPUT_MAX_SKIP_ALIGN
73 #define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE, LOG, MAX_SKIP) \
75 if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
76 else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
80 /* Don't default to pcc-struct-return, we want to retain compatibility with
81 older gcc versions AND pcc-struct-return is nonreentrant.
82 (even though the SVR4 ABI for the i386 says that records and unions are
83 returned in memory). */
85 #undef DEFAULT_PCC_STRUCT_RETURN
86 #define DEFAULT_PCC_STRUCT_RETURN 0
88 /* DragonFly sets the rounding precision of the FPU to 53 bits, but GNAT
89 resets it to full precision. */
90 #undef TARGET_96_ROUND_53_LONG_DOUBLE
91 #define TARGET_96_ROUND_53_LONG_DOUBLE 0
93 /* Define this to be nonzero if static stack checking is supported. */
94 /*#define STACK_CHECK_STATIC_BUILTIN 1 */
96 /* Define location of OS-specific unwind support configuration. */
97 #define MD_UNWIND_SUPPORT "config/i386/dragonfly-unwind.h"