lynx.h revision 50397
119304Speter/* Target independent definitions for LynxOS. 219304Speter Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc. 319304Speter 419304SpeterThis file is part of GNU CC. 519304Speter 619304SpeterGNU CC is free software; you can redistribute it and/or modify 719304Speterit under the terms of the GNU General Public License as published by 819304Speterthe Free Software Foundation; either version 2, or (at your option) 919304Speterany later version. 1019304Speter 1119304SpeterGNU CC is distributed in the hope that it will be useful, 1219304Speterbut WITHOUT ANY WARRANTY; without even the implied warranty of 13254225SpeterMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1419304SpeterGNU General Public License for more details. 1519304Speter 1619304SpeterYou should have received a copy of the GNU General Public License 1719304Speteralong with GNU CC; see the file COPYING. If not, write to 1819304Speterthe Free Software Foundation, 59 Temple Place - Suite 330, 1919304SpeterBoston, MA 02111-1307, USA. */ 2019304Speter 2119304Speter/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical. 2219304Speter We can get quite a bit from generic svr3, but have to do some overrides. */ 2319304Speter 2419304Speter#include "svr3.h" 2519304Speter 2619304Speter/* Define various macros, depending on the combination of flags. */ 2719304Speter 2819304Speter#undef CPP_SPEC 2919304Speter#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \ 3019304Speter %{mposix:-D_POSIX_SOURCE} \ 3119304Speter %{msystem-v:-I/usr/include_v}" 3219304Speter 3319304Speter/* No asm spec needed, since using GNU assembler always. */ 3419304Speter 3519304Speter/* No linker spec needed, since using GNU linker always. */ 3619304Speter 3719304Speter#undef LIB_SPEC 3819304Speter#define LIB_SPEC "%{mthreads:-L/lib/thread/} \ 3919304Speter %{msystem-v:-lc_v} \ 4019304Speter %{!msystem-v:%{mposix:-lc_p} -lc -lm}" 4119304Speter 4219304Speter/* Set the appropriate names for the Lynx startfiles. */ 4319304Speter 4419304Speter#undef STARTFILE_SPEC 4519304Speter#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}}}" 4619304Speter 4719304Speter#undef ENDFILE_SPEC 4819304Speter#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}" 4919304Speter 50254225Speter/* Override the svr3 versions. */ 5119304Speter 5219304Speter#undef WCHAR_TYPE 5319304Speter#define WCHAR_TYPE "int" 5419304Speter 5519304Speter#undef PTRDIFF_TYPE 5619304Speter#define PTRDIFF_TYPE "long int" 5719304Speter 5819304Speter/* We want to output DBX (stabs) debugging information normally. */ 59254225Speter 60254225Speter#define DBX_DEBUGGING_INFO 6119304Speter#undef PREFERRED_DEBUGGING_TYPE 6219304Speter#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 6319304Speter 6419304Speter/* It is convenient to be able to generate standard coff debugging 6519304Speter if requested via -gcoff. */ 6619304Speter 6719304Speter#define SDB_DEBUGGING_INFO 6819304Speter 6919304Speter/* Be function-relative for block and source line stab directives. */ 7019304Speter 7119304Speter#define DBX_BLOCKS_FUNCTION_RELATIVE 1 72254225Speter 7319304Speter/* but, to make this work, functions must appear prior to line info */ 7419304Speter 7519304Speter#define DBX_FUNCTION_FIRST 7619304Speter 7719304Speter/* Generate a blank trailing N_SO to mark the end of the .o file, since 7819304Speter we can't depend upon the linker to mark .o file boundaries with 7919304Speter embedded stabs. */ 8019304Speter 8119304Speter#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ 8219304Speter fprintf (FILE, \ 8319304Speter "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO) 8419304Speter 8519304Speter#undef ASM_OUTPUT_SOURCE_LINE 8619304Speter#define ASM_OUTPUT_SOURCE_LINE(file, line) \ 8719304Speter { static int sym_lineno = 1; \ 8819304Speter fprintf (file, ".stabn 68,0,%d,.LM%d-", \ 8919304Speter line, sym_lineno); \ 9019304Speter assemble_name (file, \ 91254225Speter XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ 9219304Speter fprintf (file, "\n.LM%d:\n", sym_lineno); \ 9319304Speter sym_lineno += 1; } 9419304Speter 9519304Speter/* Handle #pragma pack and sometimes #pragma weak. */ 9619304Speter 9719304Speter#define HANDLE_SYSV_PRAGMA 9819304Speter 9919304Speter/* Some additional command-line options. */ 10019304Speter 10119304Speter#define TARGET_THREADS (target_flags & MASK_THREADS) 10219304Speter#define MASK_THREADS 0x40000000 10319304Speter 10419304Speter#define TARGET_POSIX (target_flags & MASK_POSIX) 10519304Speter#define MASK_POSIX 0x20000000 10619304Speter 10719304Speter#define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V) 10819304Speter#define MASK_SYSTEM_V 0x10000000 10919304Speter 11019304Speter#undef SUBTARGET_SWITCHES 11119304Speter#define SUBTARGET_SWITCHES \ 11219304Speter {"threads", MASK_THREADS}, \ 11319304Speter {"posix", MASK_POSIX}, \ 11419304Speter {"system-v", MASK_SYSTEM_V}, 115254225Speter 11619304Speter#undef SUBTARGET_OVERRIDE_OPTIONS 117254225Speter#define SUBTARGET_OVERRIDE_OPTIONS \ 11819304Speterdo { \ 11919304Speter if (TARGET_SYSTEM_V && profile_flag) \ 12019304Speter warning ("-msystem-v and -p are incompatible"); \ 12119304Speter if (TARGET_SYSTEM_V && TARGET_THREADS) \ 12219304Speter warning ("-msystem-v and -mthreads are incompatible"); \ 12319304Speter} while (0) 12419304Speter 12519304Speter/* Define this so that C++ destructors will use atexit, since LynxOS 12619304Speter calls exit after main returns. */ 12719304Speter 12819304Speter#define HAVE_ATEXIT 12919304Speter 13019304Speter/* Since init.o et al put all sorts of stuff into the init section, 13119304Speter we can't use the standard init section support in crtbegin.o. */ 13219304Speter 13319304Speter#undef INIT_SECTION_ASM_OP 13419304Speter 13519304Speter#undef EXTRA_SECTIONS 13619304Speter#define EXTRA_SECTIONS in_const, in_ctors, in_dtors, in_fini 13719304Speter 13819304Speter#undef EXTRA_SECTION_FUNCTIONS 13919304Speter#define EXTRA_SECTION_FUNCTIONS \ 14019304Speter CONST_SECTION_FUNCTION \ 14119304Speter CTORS_SECTION_FUNCTION \ 14219304Speter DTORS_SECTION_FUNCTION \ 14319304Speter FINI_SECTION_FUNCTION 14419304Speter 14519304Speter#undef CTORS_SECTION_ASM_OP 14619304Speter#define CTORS_SECTION_ASM_OP ".section\t.ctors" 14719304Speter#undef DTORS_SECTION_ASM_OP 14819304Speter#define DTORS_SECTION_ASM_OP ".section\t.dtors" 14919304Speter 15019304Speter#define INT_ASM_OP ".long" 15119304Speter 15219304Speter/* A C statement (sans semicolon) to output an element in the table of 15319304Speter global constructors. */ 15419304Speter#undef ASM_OUTPUT_CONSTRUCTOR 15519304Speter#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ 15619304Speter do { \ 15719304Speter ctors_section (); \ 15819304Speter fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ 15919304Speter assemble_name (FILE, NAME); \ 16019304Speter fprintf (FILE, "\n"); \ 16119304Speter } while (0) 16219304Speter 16319304Speter/* A C statement (sans semicolon) to output an element in the table of 16419304Speter global destructors. */ 16519304Speter#undef ASM_OUTPUT_DESTRUCTOR 16619304Speter#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ 16719304Speter do { \ 16819304Speter dtors_section (); \ 16919304Speter fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ 17019304Speter assemble_name (FILE, NAME); \ 17119304Speter fprintf (FILE, "\n"); \ 17219304Speter } while (0) 17319304Speter 17419304Speter#undef DO_GLOBAL_CTORS_BODY 17519304Speter#undef DO_GLOBAL_DTORS_BODY 17619304Speter 17719304Speter/* LynxOS doesn't have mcount. */ 17819304Speter#undef FUNCTION_PROFILER 17919304Speter#define FUNCTION_PROFILER(file, profile_label_no) 18019304Speter