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- /* Target independent definitions for LynxOS.
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- 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}"
-
- /* No asm spec needed, since using GNU assembler always. */
-
- /* 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}"
-
- /* Set the appropriate names for the Lynx startfiles. */
-
- #undef STARTFILE_SPEC
- #define STARTFILE_SPEC "%{p:pinit1.o%s}%{!p:%{msystem-v:vinit1.o%s}%{!msystem-v:init1.o%s}}"
-
- #undef ENDFILE_SPEC
- #define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}"
-
- /* Override the svr3 versions. */
-
- #undef WCHAR_TYPE
- #define WCHAR_TYPE "int"
-
- #undef PTRDIFF_TYPE
- #define PTRDIFF_TYPE "long int"
-
- /* We want to output DBX (stabs) debugging information normally. */
-
- #define DBX_DEBUGGING_INFO
- #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-
- /* It is convenient to be able to generate standard coff debugging
- if requested via -gcoff. */
-
- #define SDB_DEBUGGING_INFO
-
- /* 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 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_POSIX (target_flags & MASK_POSIX)
- #define MASK_POSIX 0x20000000
-
- #define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V)
- #define MASK_SYSTEM_V 0x10000000
-
- #undef SUBTARGET_SWITCHES
- #define SUBTARGET_SWITCHES \
- {"threads", MASK_THREADS}, \
- {"posix", MASK_POSIX}, \
- {"system-v", MASK_SYSTEM_V},
-
- #undef SUBTARGET_OVERRIDE_OPTIONS
- #define SUBTARGET_OVERRIDE_OPTIONS \
- { if (TARGET_SYSTEM_V && profile_flag) \
- warning ("-msystem-v and -p are incompatible"); \
- if (TARGET_SYSTEM_V && TARGET_THREADS) \
- warning ("-msystem-v and -mthreads are incompatible"); }
-
- /* Define this so that C++ destructors will use atexit, since LynxOS
- calls exit after main returns. */
-
- #define HAVE_ATEXIT
-
- /* 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
-