Rewrite for coff
From-SVN: r7721
This commit is contained in:
Richard Stallman
parent
58376b85b1
commit
4843c18526
1 changed files with 111 additions and 40 deletions
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@ -1,32 +1,52 @@
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/* Target independent definitions for LynxOS. */
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/* Target independent definitions for LynxOS.
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Copyright (C) 1993 Free Software Foundation, Inc.
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/* ??? The -C option may need to change to whatever option the GNU assembler
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actually accepts. */
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#undef ASM_SPEC
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#define ASM_SPEC "%{mcoff:-C}"
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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, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical.
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We can get quite a bit from generic svr3, but have to do some overrides. */
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#include "svr3.h"
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/* Define various macros, depending on the combination of flags. */
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#undef CPP_SPEC
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#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} %{mposix:-D_POSIX_SOURCE} %{msystem-v:-I/usr/include_v}"
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#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \
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%{mposix:-D_POSIX_SOURCE} \
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%{msystem-v:-I/usr/include_v}"
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/* Provide required defaults for linker switches. */
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/* ??? The -k option may need to change to whatever option the GNU linker
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actually accepts. This is to produce COFF output. */
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/* ??? The -V option may need to change to whatever option the GNU linker
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actually accepts. This is to produce System-V magic numbers. */
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#undef LINK_SPEC
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#define LINK_SPEC "-P1000 %{msystem-v:-V} %{mcoff:-k}"
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/* No asm spec needed, since using GNU assembler always. */
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/* No linker spec needed, since using GNU linker always. */
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#undef LIB_SPEC
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#define LIB_SPEC "%{mthreads:-L/lib/thread/} %{msystem-v:-lc_v} %{!msystem-v:%{mposix:-lc_p} -lc}"
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#define LIB_SPEC "%{mthreads:-L/lib/thread/} \
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%{msystem-v:-lc_v} \
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%{!msystem-v:%{mposix:-lc_p} -lc}"
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/* Set the appropriate names for the Lynx startfiles. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{p:%{mcoff:pinit1.o%s} %{!mcoff:pinit.o%s}} %{!p:%{msystem-v:%{mcoff:vinit1.o%s} %{!mcoff:vinit.o%s}} %{!msystem-v:%{mcoff:init1.o%s}%{!mcoff:init.o%s}}}"
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#define STARTFILE_SPEC "%{p:pinit1.o%s}%{!p:%{msystem-v:vinit1.o%s}%{!msystem-v:init1.o%s}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "%{mcoff:initn.o%s} %{p:_etext.o%s}"
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#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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/* Override the svr3 versions. */
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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@ -34,25 +54,47 @@
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "long int"
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/* We want to output DBX debugging information. */
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/* We want to output DBX (stabs) debugging information normally. */
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#define DBX_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* We optionally want to be able to produce SDB debugging output so that
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we can create debuggable SDB/coff files. This won't be needed when
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stabs-in-coff works. */
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/* It is convenient to be able to generate standard coff debugging
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if requested via -gcoff. */
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#define SDB_DEBUGGING_INFO
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/* Generate calls to memcpy, memcmp and memset. */
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/* Be function-relative for block and source line stab directives. */
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#define TARGET_MEM_FUNCTIONS
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#define DBX_BLOCKS_FUNCTION_RELATIVE 1
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/* but, to make this work, functions must appear prior to line info */
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#define DBX_FUNCTION_FIRST
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/* Generate a blank trailing N_SO to mark the end of the .o file, since
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we can't depend upon the linker to mark .o file boundaries with
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embedded stabs. */
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#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
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fprintf (FILE, \
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"\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
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#undef ASM_OUTPUT_SOURCE_LINE
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#define ASM_OUTPUT_SOURCE_LINE(file, line) \
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{ static int sym_lineno = 1; \
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fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n", \
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line, sym_lineno, \
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XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \
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sym_lineno); \
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sym_lineno += 1; }
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/* Handle #pragma pack and sometimes #pragma weak. */
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#define HANDLE_SYSV_PRAGMA
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/* Some additional command-line options. */
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#define TARGET_THREADS (target_flags & MASK_THREADS)
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#define MASK_THREADS 0x40000000
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@ -62,15 +104,11 @@
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#define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
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#define MASK_SYSTEM_V 0x10000000
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#define TARGET_COFF (target_flags & MASK_COFF)
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#define MASK_COFF 0x08000000
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#undef SUBTARGET_SWITCHES
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#define SUBTARGET_SWITCHES \
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{"threads", MASK_THREADS}, \
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{"posix", MASK_POSIX}, \
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{"system-v", MASK_SYSTEM_V}, \
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{"coff", MASK_COFF},
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{"system-v", MASK_SYSTEM_V},
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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS \
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@ -79,22 +117,55 @@
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if (TARGET_SYSTEM_V && TARGET_THREADS) \
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warning ("-msystem-v and -mthreads are incompatible"); }
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/* Define this so that C++ destructors will use atexit. */
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/* Define this so that C++ destructors will use atexit, since LynxOS
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calls exit after main returns. */
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#define HAVE_ATEXIT
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/* This is defined only so that we can find the assembler. Everything else
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is in /bin. */
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/* Since init.o et al put all sorts of stuff into the init section,
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we can't use the standard init section support in crtbegin.o. */
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#define MD_EXEC_PREFIX "/usr/local/lib/gcc-"
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#undef INIT_SECTION_ASM_OP
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/* ??? This is needed because /bin/ld does not handle -L options correctly.
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This can be deleted if GNU ld is being used. */
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors, in_fini,
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#define LINK_LIBGCC_SPECIAL_1
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CONST_SECTION_FUNCTION \
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BSS_SECTION_FUNCTION \
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CTORS_SECTION_FUNCTION \
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DTORS_SECTION_FUNCTION \
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FINI_SECTION_FUNCTION
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/* The Lynx linker considers __main to be a possible entry point, so we
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must use a different name. */
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#undef CTORS_SECTION_ASM_OP
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#define CTORS_SECTION_ASM_OP ".section\t.ctors"
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#undef DTORS_SECTION_ASM_OP
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#define DTORS_SECTION_ASM_OP ".section\t.dtors"
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#define NAME__MAIN "____main"
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#define SYMBOL__MAIN ____main
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#define INT_ASM_OP ".long"
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/* A C statement (sans semicolon) to output an element in the table of
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global constructors. */
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#undef ASM_OUTPUT_CONSTRUCTOR
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#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
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do { \
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ctors_section (); \
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fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} while (0)
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/* A C statement (sans semicolon) to output an element in the table of
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global destructors. */
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#undef ASM_OUTPUT_DESTRUCTOR
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#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
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do { \
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dtors_section (); \
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fprintf (FILE, "\t%s\t ", INT_ASM_OP); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} while (0)
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#undef DO_GLOBAL_CTORS_BODY
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#undef DO_GLOBAL_DTORS_BODY
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