243 lines
7.8 KiB
C
243 lines
7.8 KiB
C
/* Configuration for an i386 running MS-DOS with DJGPP.
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Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "dbxcoff.h"
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/* Support generation of DWARF2 debugging info. */
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#define DWARF2_DEBUGGING_INFO
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/* Don't assume anything about the header files. */
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#define NO_IMPLICIT_EXTERN_C
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#define HANDLE_SYSV_PRAGMA
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/* Enable parsing of #pragma pack(push,<n>) and #pragma pack(pop). */
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#define HANDLE_PRAGMA_PACK_PUSH_POP 1
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#define YES_UNDERSCORES
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#include "i386/gas.h"
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/* If defined, a C expression whose value is a string containing the
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assembler operation to identify the following data as
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uninitialized global data. If not defined, and neither
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`ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
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uninitialized global data will be output in the data section if
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`-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
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used. */
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#undef BSS_SECTION_ASM_OP
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#define BSS_SECTION_ASM_OP "\t.section\t.bss"
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/* Define the name of the .data section. */
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#undef DATA_SECTION_ASM_OP
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#define DATA_SECTION_ASM_OP "\t.section .data"
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/* Define the name of the .ident op. */
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#undef IDENT_ASM_OP
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#define IDENT_ASM_OP "\t.ident\t"
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/* Enable alias attribute support. */
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#ifndef SET_ASM_OP
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#define SET_ASM_OP "\t.set\t"
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#endif
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/* Define the name of the .text section. */
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#undef TEXT_SECTION_ASM_OP
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#define TEXT_SECTION_ASM_OP "\t.section .text"
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/* Define standard DJGPP installation paths. */
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/* We override default /usr or /usr/local part with /dev/env/DJDIR which */
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/* points to actual DJGPP instalation directory. */
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/* Standard include directory */
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#undef STANDARD_INCLUDE_DIR
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#define STANDARD_INCLUDE_DIR "/dev/env/DJDIR/include/"
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/* Search for as.exe and ld.exe in DJGPP's binary directory. */
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#undef MD_EXEC_PREFIX
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#define MD_EXEC_PREFIX "/dev/env/DJDIR/bin/"
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/* Standard DJGPP library and startup files */
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#undef MD_STARTFILE_PREFIX
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#define MD_STARTFILE_PREFIX "/dev/env/DJDIR/lib/"
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/* Correctly handle absolute filename detection in cp/xref.c */
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#define FILE_NAME_ABSOLUTE_P(NAME) \
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(((NAME)[0] == '/') || ((NAME)[0] == '\\') || \
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(((NAME)[0] >= 'A') && ((NAME)[0] <= 'z') && ((NAME)[1] == ':')))
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#undef CPP_PREDEFINES
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#define CPP_PREDEFINES "-D__MSDOS__ -D__GO32__ -Asystem=msdos"
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/* Include <sys/version.h> so __DJGPP__ and __DJGPP_MINOR__ are defined. */
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#undef CPP_SPEC
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#define CPP_SPEC "-remap %(cpp_cpu) %{posix:-D_POSIX_SOURCE} \
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%{!ansi:%{!std=c*:%{!std=i*:-DMSDOS}}} %{!ansi:%{!std=c*:%{!std=i*:-DGO32}}} \
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-imacros %s../include/sys/version.h"
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/* We need to override link_command_spec in gcc.c so support -Tdjgpp.djl.
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This cannot be done in LINK_SPECS as that LINK_SPECS is processed
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before library search directories are known by the linker.
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This avoids problems when specs file is not available. An alternate way,
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suggested by Robert Hoehne, is to use SUBTARGET_EXTRA_SPECS instead.
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*/
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#undef LINK_COMMAND_SPEC
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#define LINK_COMMAND_SPEC \
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"%{!fsyntax-only: \
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%{!c:%{!M:%{!MM:%{!E:%{!S:%(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \
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\t%{r} %{s} %{t} %{u*} %{x} %{z} %{Z}\
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\t%{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
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\t%{static:} %{L*} %D %o\
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\t%{!nostdlib:%{!nodefaultlibs:%G %L %G}}\
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\t%{!A:%{!nostdlib:%{!nostartfiles:%E}}}\
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\t-Tdjgpp.djl %{T*}}}}}}}\n\
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%{!c:%{!M:%{!MM:%{!E:%{!S:stubify %{v} %{o*:%*} %{!o*:a.out} }}}}}"
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/* Always just link in 'libc.a'. */
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#undef LIB_SPEC
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#define LIB_SPEC "-lc"
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/* Pick the right startup code depending on the -pg flag. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:crt0.o%s}"
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/* Make sure that gcc will not look for .h files in /usr/local/include
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unless user explicitly requests it. */
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#undef LOCAL_INCLUDE_DIR
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/* Switch into a generic section. */
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#define TARGET_ASM_NAMED_SECTION default_coff_asm_named_section
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/* Output at beginning of assembler file. */
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/* The .file command should always begin the output. */
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#undef ASM_FILE_START
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#define ASM_FILE_START(FILE) \
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do { \
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output_file_directive (FILE, main_input_filename); \
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} while (0)
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/* This is how to output an assembler line
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that says to advance the location counter
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to a multiple of 2**LOG bytes. */
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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if ((LOG) != 0) fprintf ((FILE), "\t.p2align %d\n", LOG)
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/* This is how to output a global symbol in the BSS section. */
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#undef ASM_OUTPUT_ALIGNED_BSS
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#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
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asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN))
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/* This is how to tell assembler that a symbol is weak */
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#undef ASM_WEAKEN_LABEL
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#define ASM_WEAKEN_LABEL(FILE,NAME) \
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do { fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
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fputc ('\n', FILE); } while (0)
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/* djgpp automatically calls its own version of __main, so don't define one
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in libgcc, nor call one in main(). */
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#define HAS_INIT_SECTION
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/* Definitions for types and sizes. Wide characters are 16-bits long so
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Win32 compiler add-ons will be wide character compatible. */
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#undef WCHAR_UNSIGNED
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#define WCHAR_UNSIGNED 1
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 16
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "short unsigned int"
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#undef WINT_TYPE
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#define WINT_TYPE "int"
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#undef SIZE_TYPE
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#define SIZE_TYPE "long unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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/* Used to be defined in xm-djgpp.h, but moved here for cross-compilers. */
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#define LIBSTDCXX "-lstdcxx"
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/* -mbnu210 is now ignored and obsolete. It was used to enable support for
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weak symbols, and .gnu.linkonce support. */
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#undef MASK_BNU210
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#define MASK_BNU210 (0x40000000)
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{ "no-bnu210", -MASK_BNU210, "Ignored (obsolete)" }, \
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{ "bnu210", MASK_BNU210, "Ignored (obsolete)" },
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/* Warn that -mbnu210 is now obsolete. */
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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS \
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do \
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{ \
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if (target_flags & MASK_BNU210) \
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{ \
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warning ("-mbnu210 is ignored (option is obsolete)"); \
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} \
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} \
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while (0)
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/* Support for C++ templates. */
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#undef MAKE_DECL_ONE_ONLY
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#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)
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#undef UNIQUE_SECTION
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#define UNIQUE_SECTION(DECL,RELOC) \
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do { \
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int len; \
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const char *name, *prefix; \
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char *string; \
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\
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
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/* Strip off any encoding in fnname. */ \
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STRIP_NAME_ENCODING (name, name); \
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\
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if (! DECL_ONE_ONLY (DECL)) \
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{ \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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prefix = ".text."; \
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else if (DECL_READONLY_SECTION (DECL, RELOC)) \
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prefix = ".rodata."; \
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else \
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prefix = ".data."; \
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} \
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else if (TREE_CODE (DECL) == FUNCTION_DECL) \
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prefix = ".gnu.linkonce.t."; \
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else if (DECL_READONLY_SECTION (DECL, RELOC)) \
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prefix = ".gnu.linkonce.r."; \
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else \
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prefix = ".gnu.linkonce.d."; \
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\
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len = strlen (name) + strlen (prefix); \
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string = alloca (len + 1); \
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sprintf (string, "%s%s", prefix, name); \
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\
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DECL_SECTION_NAME (DECL) = build_string (len, string); \
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} while (0)
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