1 /* Configuration for an i386 running MS-DOS with DJGPP.
2 Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 /* Don't assume anything about the header files. */
25 #define NO_IMPLICIT_EXTERN_C
27 #define HANDLE_SYSV_PRAGMA
29 /* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
30 #define HANDLE_PRAGMA_PACK_PUSH_POP 1
32 #define YES_UNDERSCORES
36 /* If defined, a C expression whose value is a string containing the
37 assembler operation to identify the following data as
38 uninitialized global data. If not defined, and neither
39 `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
40 uninitialized global data will be output in the data section if
41 `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
43 #undef BSS_SECTION_ASM_OP
44 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
46 /* Define the name of the .ctor section. */
47 #undef CTORS_SECTION_ASM_OP
48 #define CTORS_SECTION_ASM_OP "\t.section .ctor"
50 /* Define the name of the .data section. */
51 #undef DATA_SECTION_ASM_OP
52 #define DATA_SECTION_ASM_OP "\t.section .data"
54 /* Define the name of the .dtor section. */
55 #undef DTORS_SECTION_ASM_OP
56 #define DTORS_SECTION_ASM_OP "\t.section .dtor"
58 /* Define the name of the .eh_frame section. */
59 #undef EH_FRAME_SECTION_ASM_OP
60 #define EH_FRAME_SECTION_ASM_OP "\t.section .eh_frame"
62 /* Define the name of the .ident op. */
64 #define IDENT_ASM_OP "\t.ident"
66 /* Enable alias attribute support. */
68 #define SET_ASM_OP "\t.set"
71 /* Define the name of the .text section. */
72 #undef TEXT_SECTION_ASM_OP
73 #define TEXT_SECTION_ASM_OP "\t.section .text"
75 /* Search for as.exe and ld.exe in DJGPP's binary directory. */
76 #define MD_EXEC_PREFIX "$DJDIR/bin/"
78 /* Correctly handle absolute filename detection in cp/xref.c */
79 #define FILE_NAME_ABSOLUTE_P(NAME) \
80 (((NAME)[0] == '/') || ((NAME)[0] == '\\') || \
81 (((NAME)[0] >= 'A') && ((NAME)[0] <= 'z') && ((NAME)[1] == ':')))
84 #define CPP_PREDEFINES "-DGO32 -DDJGPP=2 -DMSDOS -Asystem(msdos)"
86 /* Include <sys/version.h> so __DJGPP__ and __DJGPP_MINOR__ are defined. */
88 #define CPP_SPEC "-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
89 -imacros %s../include/sys/version.h"
91 /* We need to override link_command_spec in gcc.c so support -Tdjgpp.djl.
92 This cannot be done in LINK_SPECS as that LINK_SPECS is processed
93 before library search directories are known by the linker.
94 This avoids problems when specs file is not available. An alternate way,
95 suggested by Robert Hoehne, is to use SUBTARGET_EXTRA_SPECS instead.
98 #undef LINK_COMMAND_SPEC
99 #define LINK_COMMAND_SPEC \
101 %{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
102 \t%{r} %{s} %{t} %{u*} %{x} %{z} %{Z}\
103 \t%{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
104 \t%{static:} %{L*} %D %o\
105 \t%{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
106 \t%{!A:%{!nostdlib:%{!nostartfiles:%E}}}\
107 \t-Tdjgpp.djl %{T*}}}}}}}\n\
108 %{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}"
110 /* Always just link in 'libc.a'. */
112 #define LIB_SPEC "-lc"
114 /* Pick the right startup code depending on the -pg flag. */
115 #undef STARTFILE_SPEC
116 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s}"
118 /* Make sure that gcc will not look for .h files in /usr/local/include
119 unless user explicitly requests it. */
120 #undef LOCAL_INCLUDE_DIR
122 #undef EXTRA_SECTIONS
123 #define EXTRA_SECTIONS in_ctor, in_dtor
125 #undef EXTRA_SECTION_FUNCTIONS
126 #define EXTRA_SECTION_FUNCTIONS \
127 CTOR_SECTION_FUNCTION \
128 DTOR_SECTION_FUNCTION
130 #define CTOR_SECTION_FUNCTION \
134 if (in_section != in_ctor) \
136 fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
137 in_section = in_ctor; \
141 #define DTOR_SECTION_FUNCTION \
145 if (in_section != in_dtor) \
147 fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
148 in_section = in_dtor; \
152 #define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
155 fprintf (FILE, "%s\t", ASM_LONG); \
156 assemble_name (FILE, NAME); \
157 fprintf (FILE, "\n"); \
160 /* Allow (eg) __attribute__((section "locked")) to work */
161 #define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC)\
163 fprintf (FILE, "\t.section %s\n", NAME); \
166 #define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
169 fprintf (FILE, "%s\t", ASM_LONG); \
170 assemble_name (FILE, NAME); \
171 fprintf (FILE, "\n"); \
174 /* Output at beginning of assembler file. */
175 /* The .file command should always begin the output. */
177 #undef ASM_FILE_START
178 #define ASM_FILE_START(FILE) \
180 output_file_directive (FILE, main_input_filename); \
183 /* This is how to output an assembler line
184 that says to advance the location counter
185 to a multiple of 2**LOG bytes. */
187 #undef ASM_OUTPUT_ALIGN
188 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
189 if ((LOG) != 0) fprintf ((FILE), "\t.p2align %d\n", LOG)
191 /* This is how to output a global symbol in the BSS section. */
192 #undef ASM_OUTPUT_ALIGNED_BSS
193 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
194 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
196 /* djgpp automatically calls its own version of __main, so don't define one
197 in libgcc, nor call one in main(). */
198 #define HAS_INIT_SECTION
200 /* Definitions to set wchar_t type to 'unsigned short int' to help out
201 add-on Windows compilers for DJGPP. */
202 #define WCHAR_UNSIGNED 1
203 #define WCHAR_TYPE_SIZE 16
204 #define WCHAR_TYPE "short unsigned int"
206 /* Used to be defined in xm-djgpp.h, but moved here for cross-compilers. */
207 #define LIBSTDCXX "-lstdcxx"