1 /* Configuration for an i386 running MS-DOS with DJGPP.
2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2007,
3 2010, 2011 Free Software Foundation, Inc.
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 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 /* Support generation of DWARF2 debugging info. */
22 #define DWARF2_DEBUGGING_INFO 1
24 /* Don't assume anything about the header files. */
25 #define NO_IMPLICIT_EXTERN_C
27 #undef BSS_SECTION_ASM_OP
28 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
30 /* Define the name of the .data section. */
31 #undef DATA_SECTION_ASM_OP
32 #define DATA_SECTION_ASM_OP "\t.section .data"
34 /* Define the name of the .ident op. */
36 #define IDENT_ASM_OP "\t.ident\t"
38 /* Enable alias attribute support. */
40 #define SET_ASM_OP "\t.set\t"
43 /* Define the name of the .text section. */
44 #undef TEXT_SECTION_ASM_OP
45 #define TEXT_SECTION_ASM_OP "\t.section .text"
47 /* Define standard DJGPP installation paths. */
48 /* We override default /usr or /usr/local part with /dev/env/DJDIR which */
49 /* points to actual DJGPP installation directory. */
51 /* Search for as.exe and ld.exe in DJGPP's binary directory. */
53 #define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
55 /* Standard DJGPP library and startup files */
56 #undef MD_STARTFILE_PREFIX
57 #define MD_STARTFILE_PREFIX "/dev/env/DJDIR/lib/"
59 /* Correctly handle absolute filename detection in cp/xref.c */
60 #define FILE_NAME_ABSOLUTE_P(NAME) \
61 (((NAME)[0] == '/') || ((NAME)[0] == '\\') || \
62 (((NAME)[0] >= 'A') && ((NAME)[0] <= 'z') && ((NAME)[1] == ':')))
64 #define TARGET_OS_CPP_BUILTINS() \
67 builtin_define_std ("MSDOS"); \
68 builtin_define_std ("GO32"); \
69 builtin_assert ("system=msdos"); \
73 /* Include <sys/version.h> so __DJGPP__ and __DJGPP_MINOR__ are defined. */
75 #define CPP_SPEC "-remap %{posix:-D_POSIX_SOURCE} \
76 -imacros %s../include/sys/version.h"
78 /* We need to override link_command_spec in gcc.c so support -Tdjgpp.djl.
79 This cannot be done in LINK_SPECS as that LINK_SPECS is processed
80 before library search directories are known by the linker.
81 This avoids problems when specs file is not available. An alternate way,
82 suggested by Robert Hoehne, is to use SUBTARGET_EXTRA_SPECS instead.
85 #undef LINK_COMMAND_SPEC
86 #define LINK_COMMAND_SPEC \
88 %{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l %X %{o*} %{e*} %{N} %{n} \
89 \t%{r} %{s} %{t} %{u*} %{z} %{Z}\
90 \t%{!nostdlib:%{!nostartfiles:%S}}\
91 \t%{static:} %{L*} %D %o\
92 \t%{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
93 \t%{!nostdlib:%{!nostartfiles:%E}}\
94 \t-Tdjgpp.djl %{T*}}}}}}}\n\
95 %{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}"
97 /* Always just link in 'libc.a'. */
99 #define LIB_SPEC "-lc"
101 /* Pick the right startup code depending on the -pg flag. */
102 #undef STARTFILE_SPEC
103 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s}"
105 /* Make sure that gcc will not look for .h files in /usr/local/include
106 unless user explicitly requests it. */
107 #undef LOCAL_INCLUDE_DIR
109 /* Switch into a generic section. */
110 #define TARGET_ASM_NAMED_SECTION default_coff_asm_named_section
112 /* This is how to output an assembler line
113 that says to advance the location counter
114 to a multiple of 2**LOG bytes. */
116 #undef ASM_OUTPUT_ALIGN
117 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
118 if ((LOG) != 0) fprintf ((FILE), "\t.p2align %d\n", LOG)
120 /* This is how to output a global symbol in the BSS section. */
121 #undef ASM_OUTPUT_ALIGNED_BSS
122 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
123 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
125 /* This is how to tell assembler that a symbol is weak */
126 #undef ASM_WEAKEN_LABEL
127 #define ASM_WEAKEN_LABEL(FILE,NAME) \
128 do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
129 fputc ('\n', FILE); } while (0)
131 /* djgpp automatically calls its own version of __main, so don't define one
132 in libgcc, nor call one in main(). */
133 #define HAS_INIT_SECTION
135 /* Definitions for types and sizes. Wide characters are 16-bits long so
136 Win32 compiler add-ons will be wide character compatible. */
137 #undef WCHAR_TYPE_SIZE
138 #define WCHAR_TYPE_SIZE 16
141 #define WCHAR_TYPE "short unsigned int"
144 #define WINT_TYPE "int"
147 #define SIZE_TYPE "long unsigned int"
150 #define PTRDIFF_TYPE "int"
152 /* Used to be defined in xm-djgpp.h, but moved here for cross-compilers. */
153 #define LIBSTDCXX "stdcxx"
155 /* Warn that -mbnu210 is now obsolete. */
156 #undef SUBTARGET_OVERRIDE_OPTIONS
157 #define SUBTARGET_OVERRIDE_OPTIONS \
162 warning (0, "-mbnu210 is ignored (option is obsolete)"); \
167 /* Support for C++ templates. */
168 #undef MAKE_DECL_ONE_ONLY
169 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)