180 lines
5.5 KiB
C
180 lines
5.5 KiB
C
/* Target independent definitions for LynxOS.
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Copyright (C) 1993, 1994, 1995, 1996 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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/* 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} \
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%{mposix:-D_POSIX_SOURCE} \
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%{msystem-v:-I/usr/include_v}"
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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/} \
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%{msystem-v:-lc_v} \
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%{!msystem-v:%{mposix:-lc_p} -lc -lm}"
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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:%{mthreads:thread/pinit1.o%s}%{!mthreads:pinit1.o%s}}%{!p:%{msystem-v:vinit1.o%s -e_start}%{!msystem-v:%{mthreads:thread/init1.o%s}%{!mthreads:init1.o%s}}}"
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#undef ENDFILE_SPEC
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#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
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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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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "long int"
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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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#undef PREFERRED_DEBUGGING_TYPE
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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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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/* Be function-relative for block and source line stab directives. */
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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-", \
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line, sym_lineno); \
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assemble_name (file, \
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XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
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fprintf (file, "\n.LM%d:\n", 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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#define TARGET_POSIX (target_flags & MASK_POSIX)
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#define MASK_POSIX 0x20000000
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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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#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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#undef SUBTARGET_OVERRIDE_OPTIONS
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#define SUBTARGET_OVERRIDE_OPTIONS \
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do { \
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if (TARGET_SYSTEM_V && profile_flag) \
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warning ("-msystem-v and -p are incompatible"); \
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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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} while (0)
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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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/* 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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#undef INIT_SECTION_ASM_OP
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_fini
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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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CTORS_SECTION_FUNCTION \
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DTORS_SECTION_FUNCTION \
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FINI_SECTION_FUNCTION
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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 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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/* LynxOS doesn't have mcount. */
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#undef FUNCTION_PROFILER
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#define FUNCTION_PROFILER(file, profile_label_no)
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