From 4843c185260968f8762602cc39991e4b6319475a Mon Sep 17 00:00:00 2001 From: Richard Stallman Date: Mon, 11 Jul 1994 21:07:46 +0000 Subject: [PATCH] Rewrite for coff From-SVN: r7721 --- gcc/config/lynx.h | 161 +++++++++++++++++++++++++++++++++------------- 1 file changed, 116 insertions(+), 45 deletions(-) diff --git a/gcc/config/lynx.h b/gcc/config/lynx.h index fde0e729be0..0819b684e3e 100644 --- a/gcc/config/lynx.h +++ b/gcc/config/lynx.h @@ -1,32 +1,52 @@ -/* Target independent definitions for LynxOS. */ +/* Target independent definitions for LynxOS. + Copyright (C) 1993 Free Software Foundation, Inc. -/* ??? The -C option may need to change to whatever option the GNU assembler - actually accepts. */ -#undef ASM_SPEC -#define ASM_SPEC "%{mcoff:-C}" +This file is part of GNU CC. + +GNU CC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU CC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical. + We can get quite a bit from generic svr3, but have to do some overrides. */ + +#include "svr3.h" + +/* Define various macros, depending on the combination of flags. */ #undef CPP_SPEC -#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} %{mposix:-D_POSIX_SOURCE} %{msystem-v:-I/usr/include_v}" +#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \ + %{mposix:-D_POSIX_SOURCE} \ + %{msystem-v:-I/usr/include_v}" + +/* No asm spec needed, since using GNU assembler always. */ -/* Provide required defaults for linker switches. */ -/* ??? The -k option may need to change to whatever option the GNU linker - actually accepts. This is to produce COFF output. */ -/* ??? The -V option may need to change to whatever option the GNU linker - actually accepts. This is to produce System-V magic numbers. */ -#undef LINK_SPEC -#define LINK_SPEC "-P1000 %{msystem-v:-V} %{mcoff:-k}" +/* No linker spec needed, since using GNU linker always. */ #undef LIB_SPEC -#define LIB_SPEC "%{mthreads:-L/lib/thread/} %{msystem-v:-lc_v} %{!msystem-v:%{mposix:-lc_p} -lc}" +#define LIB_SPEC "%{mthreads:-L/lib/thread/} \ + %{msystem-v:-lc_v} \ + %{!msystem-v:%{mposix:-lc_p} -lc}" + +/* Set the appropriate names for the Lynx startfiles. */ #undef STARTFILE_SPEC -#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}}}" +#define STARTFILE_SPEC "%{p:pinit1.o%s}%{!p:%{msystem-v:vinit1.o%s}%{!msystem-v:init1.o%s}}" #undef ENDFILE_SPEC -#define ENDFILE_SPEC "%{mcoff:initn.o%s} %{p:_etext.o%s}" +#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}" -#undef SIZE_TYPE -#define SIZE_TYPE "unsigned int" +/* Override the svr3 versions. */ #undef WCHAR_TYPE #define WCHAR_TYPE "int" @@ -34,25 +54,47 @@ #undef PTRDIFF_TYPE #define PTRDIFF_TYPE "long int" -/* We want to output DBX debugging information. */ +/* We want to output DBX (stabs) debugging information normally. */ #define DBX_DEBUGGING_INFO #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG -/* We optionally want to be able to produce SDB debugging output so that - we can create debuggable SDB/coff files. This won't be needed when - stabs-in-coff works. */ +/* It is convenient to be able to generate standard coff debugging + if requested via -gcoff. */ #define SDB_DEBUGGING_INFO -/* Generate calls to memcpy, memcmp and memset. */ +/* Be function-relative for block and source line stab directives. */ + +#define DBX_BLOCKS_FUNCTION_RELATIVE 1 + +/* but, to make this work, functions must appear prior to line info */ -#define TARGET_MEM_FUNCTIONS +#define DBX_FUNCTION_FIRST + +/* Generate a blank trailing N_SO to mark the end of the .o file, since + we can't depend upon the linker to mark .o file boundaries with + embedded stabs. */ + +#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ + fprintf (FILE, \ + "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO) + +#undef ASM_OUTPUT_SOURCE_LINE +#define ASM_OUTPUT_SOURCE_LINE(file, line) \ + { static int sym_lineno = 1; \ + fprintf (file, ".stabn 68,0,%d,.LM%d-%s\n.LM%d:\n", \ + line, sym_lineno, \ + XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0), \ + sym_lineno); \ + sym_lineno += 1; } /* Handle #pragma pack and sometimes #pragma weak. */ #define HANDLE_SYSV_PRAGMA +/* Some additional command-line options. */ + #define TARGET_THREADS (target_flags & MASK_THREADS) #define MASK_THREADS 0x40000000 @@ -62,15 +104,11 @@ #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V) #define MASK_SYSTEM_V 0x10000000 -#define TARGET_COFF (target_flags & MASK_COFF) -#define MASK_COFF 0x08000000 - #undef SUBTARGET_SWITCHES #define SUBTARGET_SWITCHES \ {"threads", MASK_THREADS}, \ {"posix", MASK_POSIX}, \ - {"system-v", MASK_SYSTEM_V}, \ - {"coff", MASK_COFF}, + {"system-v", MASK_SYSTEM_V}, #undef SUBTARGET_OVERRIDE_OPTIONS #define SUBTARGET_OVERRIDE_OPTIONS \ @@ -79,22 +117,55 @@ if (TARGET_SYSTEM_V && TARGET_THREADS) \ warning ("-msystem-v and -mthreads are incompatible"); } -/* Define this so that C++ destructors will use atexit. */ +/* Define this so that C++ destructors will use atexit, since LynxOS + calls exit after main returns. */ #define HAVE_ATEXIT -/* This is defined only so that we can find the assembler. Everything else - is in /bin. */ - -#define MD_EXEC_PREFIX "/usr/local/lib/gcc-" - -/* ??? This is needed because /bin/ld does not handle -L options correctly. - This can be deleted if GNU ld is being used. */ - -#define LINK_LIBGCC_SPECIAL_1 - -/* The Lynx linker considers __main to be a possible entry point, so we - must use a different name. */ - -#define NAME__MAIN "____main" -#define SYMBOL__MAIN ____main +/* Since init.o et al put all sorts of stuff into the init section, + we can't use the standard init section support in crtbegin.o. */ + +#undef INIT_SECTION_ASM_OP + +#undef EXTRA_SECTIONS +#define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors, in_fini, + +#undef EXTRA_SECTION_FUNCTIONS +#define EXTRA_SECTION_FUNCTIONS \ + CONST_SECTION_FUNCTION \ + BSS_SECTION_FUNCTION \ + CTORS_SECTION_FUNCTION \ + DTORS_SECTION_FUNCTION \ + FINI_SECTION_FUNCTION + +#undef CTORS_SECTION_ASM_OP +#define CTORS_SECTION_ASM_OP ".section\t.ctors" +#undef DTORS_SECTION_ASM_OP +#define DTORS_SECTION_ASM_OP ".section\t.dtors" + +#define INT_ASM_OP ".long" + +/* A C statement (sans semicolon) to output an element in the table of + global constructors. */ +#undef ASM_OUTPUT_CONSTRUCTOR +#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ + do { \ + ctors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +/* A C statement (sans semicolon) to output an element in the table of + global destructors. */ +#undef ASM_OUTPUT_DESTRUCTOR +#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ + do { \ + dtors_section (); \ + fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "\n"); \ + } while (0) + +#undef DO_GLOBAL_CTORS_BODY +#undef DO_GLOBAL_DTORS_BODY -- 2.34.1