lynx.h revision 18334
1/* Target independent definitions for LynxOS. 2 Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. 3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU CC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 59 Temple Place - Suite 330, 19Boston, MA 02111-1307, USA. */ 20 21/* LynxOS is a multi-platform Unix, similar to SVR3, but not identical. 22 We can get quite a bit from generic svr3, but have to do some overrides. */ 23 24#include "svr3.h" 25 26/* Define various macros, depending on the combination of flags. */ 27 28#undef CPP_SPEC 29#define CPP_SPEC "%{mthreads:-D_MULTITHREADED} \ 30 %{mposix:-D_POSIX_SOURCE} \ 31 %{msystem-v:-I/usr/include_v}" 32 33/* No asm spec needed, since using GNU assembler always. */ 34 35/* No linker spec needed, since using GNU linker always. */ 36 37#undef LIB_SPEC 38#define LIB_SPEC "%{mthreads:-L/lib/thread/} \ 39 %{msystem-v:-lc_v} \ 40 %{!msystem-v:%{mposix:-lc_p} -lc -lm}" 41 42/* Set the appropriate names for the Lynx startfiles. */ 43 44#undef STARTFILE_SPEC 45#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}}}" 46 47#undef ENDFILE_SPEC 48#define ENDFILE_SPEC "%{p:_etext.o%s}%{!p:initn.o%s}" 49 50/* Override the svr3 versions. */ 51 52#undef WCHAR_TYPE 53#define WCHAR_TYPE "int" 54 55#undef PTRDIFF_TYPE 56#define PTRDIFF_TYPE "long int" 57 58/* We want to output DBX (stabs) debugging information normally. */ 59 60#define DBX_DEBUGGING_INFO 61#undef PREFERRED_DEBUGGING_TYPE 62#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG 63 64/* It is convenient to be able to generate standard coff debugging 65 if requested via -gcoff. */ 66 67#define SDB_DEBUGGING_INFO 68 69/* Be function-relative for block and source line stab directives. */ 70 71#define DBX_BLOCKS_FUNCTION_RELATIVE 1 72 73/* but, to make this work, functions must appear prior to line info */ 74 75#define DBX_FUNCTION_FIRST 76 77/* Generate a blank trailing N_SO to mark the end of the .o file, since 78 we can't depend upon the linker to mark .o file boundaries with 79 embedded stabs. */ 80 81#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \ 82 fprintf (FILE, \ 83 "\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO) 84 85#undef ASM_OUTPUT_SOURCE_LINE 86#define ASM_OUTPUT_SOURCE_LINE(file, line) \ 87 { static int sym_lineno = 1; \ 88 fprintf (file, ".stabn 68,0,%d,.LM%d-", \ 89 line, sym_lineno); \ 90 assemble_name (file, \ 91 XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \ 92 fprintf (file, "\n.LM%d:\n", sym_lineno); \ 93 sym_lineno += 1; } 94 95/* Handle #pragma pack and sometimes #pragma weak. */ 96 97#define HANDLE_SYSV_PRAGMA 98 99/* Some additional command-line options. */ 100 101#define TARGET_THREADS (target_flags & MASK_THREADS) 102#define MASK_THREADS 0x40000000 103 104#define TARGET_POSIX (target_flags & MASK_POSIX) 105#define MASK_POSIX 0x20000000 106 107#define TARGET_SYSTEM_V (target_flags & MASK_SYSTEM_V) 108#define MASK_SYSTEM_V 0x10000000 109 110#undef SUBTARGET_SWITCHES 111#define SUBTARGET_SWITCHES \ 112 {"threads", MASK_THREADS}, \ 113 {"posix", MASK_POSIX}, \ 114 {"system-v", MASK_SYSTEM_V}, 115 116#undef SUBTARGET_OVERRIDE_OPTIONS 117#define SUBTARGET_OVERRIDE_OPTIONS \ 118do { \ 119 if (TARGET_SYSTEM_V && profile_flag) \ 120 warning ("-msystem-v and -p are incompatible"); \ 121 if (TARGET_SYSTEM_V && TARGET_THREADS) \ 122 warning ("-msystem-v and -mthreads are incompatible"); \ 123} while (0) 124 125/* Define this so that C++ destructors will use atexit, since LynxOS 126 calls exit after main returns. */ 127 128#define HAVE_ATEXIT 129 130/* Since init.o et al put all sorts of stuff into the init section, 131 we can't use the standard init section support in crtbegin.o. */ 132 133#undef INIT_SECTION_ASM_OP 134 135#undef EXTRA_SECTIONS 136#define EXTRA_SECTIONS in_const, in_bss, in_ctors, in_dtors, in_fini, 137 138#undef EXTRA_SECTION_FUNCTIONS 139#define EXTRA_SECTION_FUNCTIONS \ 140 CONST_SECTION_FUNCTION \ 141 BSS_SECTION_FUNCTION \ 142 CTORS_SECTION_FUNCTION \ 143 DTORS_SECTION_FUNCTION \ 144 FINI_SECTION_FUNCTION 145 146#undef CTORS_SECTION_ASM_OP 147#define CTORS_SECTION_ASM_OP ".section\t.ctors" 148#undef DTORS_SECTION_ASM_OP 149#define DTORS_SECTION_ASM_OP ".section\t.dtors" 150 151#define INT_ASM_OP ".long" 152 153/* A C statement (sans semicolon) to output an element in the table of 154 global constructors. */ 155#undef ASM_OUTPUT_CONSTRUCTOR 156#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \ 157 do { \ 158 ctors_section (); \ 159 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ 160 assemble_name (FILE, NAME); \ 161 fprintf (FILE, "\n"); \ 162 } while (0) 163 164/* A C statement (sans semicolon) to output an element in the table of 165 global destructors. */ 166#undef ASM_OUTPUT_DESTRUCTOR 167#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \ 168 do { \ 169 dtors_section (); \ 170 fprintf (FILE, "\t%s\t ", INT_ASM_OP); \ 171 assemble_name (FILE, NAME); \ 172 fprintf (FILE, "\n"); \ 173 } while (0) 174 175#undef DO_GLOBAL_CTORS_BODY 176#undef DO_GLOBAL_DTORS_BODY 177 178/* LynxOS doesn't have mcount. */ 179#undef FUNCTION_PROFILER 180#define FUNCTION_PROFILER(file, profile_label_no) 181