-/* 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"
#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
#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 \
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
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