1/* Operating system specific defines to be used when targeting GCC for some 2 generic System V Release 4 system. 3 Copyright (C) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 4 2000, 2001 Free Software Foundation, Inc. 5 Contributed by Ron Guilmette (rfg@monkeys.com). 6 7This file is part of GCC. 8 9GCC is free software; you can redistribute it and/or modify 10it under the terms of the GNU General Public License as published by 11the Free Software Foundation; either version 2, or (at your option) 12any later version. 13 14GCC is distributed in the hope that it will be useful, 15but WITHOUT ANY WARRANTY; without even the implied warranty of 16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17GNU General Public License for more details. 18 19You should have received a copy of the GNU General Public License 20along with GCC; see the file COPYING. If not, write to 21the Free Software Foundation, 51 Franklin Street, Fifth Floor, 22Boston, MA 02110-1301, USA. 23 24 To use this file, make up a line like that in config.gcc: 25 26 tm_file="$tm_file elfos.h svr4.h MACHINE/svr4.h" 27 28 where MACHINE is replaced by the name of the basic hardware that you 29 are targeting for. Then, in the file MACHINE/svr4.h, put any really 30 system-specific defines (or overrides of defines) which you find that 31 you need. 32*/ 33 34/* Define a symbol indicating that we are using svr4.h. */ 35#define USING_SVR4_H 36 37/* Cpp, assembler, linker, library, and startfile spec's. */ 38 39/* This defines which switch letters take arguments. On svr4, most of 40 the normal cases (defined in gcc.c) apply, and we also have -h* and 41 -z* options (for the linker). Note however that there is no such 42 thing as a -T option for svr4. */ 43 44#undef SWITCH_TAKES_ARG 45#define SWITCH_TAKES_ARG(CHAR) \ 46 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 47 || (CHAR) == 'h' \ 48 || (CHAR) == 'x' \ 49 || (CHAR) == 'z') 50 51/* This defines which multi-letter switches take arguments. On svr4, 52 there are no such switches except those implemented by GCC itself. */ 53 54#define WORD_SWITCH_TAKES_ARG(STR) \ 55 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 56 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \ 57 && strcmp (STR, "Tbss")) 58 59/* Provide an ASM_SPEC appropriate for svr4. Here we try to support as 60 many of the specialized svr4 assembler options as seems reasonable, 61 given that there are certain options which we can't (or shouldn't) 62 support directly due to the fact that they conflict with other options 63 for other svr4 tools (e.g. ld) or with other options for GCC itself. 64 For example, we don't support the -o (output file) or -R (remove 65 input file) options because GCC already handles these things. We 66 also don't support the -m (run m4) option for the assembler because 67 that conflicts with the -m (produce load map) option of the svr4 68 linker. We do however allow passing arbitrary options to the svr4 69 assembler via the -Wa, option. 70 71 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,* 72 option. 73 74 The svr4 assembler wants '-' on the command line if it's expected to 75 read its stdin. 76*/ 77 78#undef ASM_SPEC 79#define ASM_SPEC \ 80 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}" 81 82#define AS_NEEDS_DASH_FOR_PIPED_INPUT 83 84/* Under svr4, the normal location of the `ld' and `as' programs is the 85 /usr/ccs/bin directory. */ 86 87#ifndef CROSS_DIRECTORY_STRUCTURE 88#undef MD_EXEC_PREFIX 89#define MD_EXEC_PREFIX "/usr/ccs/bin/" 90#endif 91 92/* Under svr4, the normal location of the various *crt*.o files is the 93 /usr/ccs/lib directory. */ 94 95#ifndef CROSS_DIRECTORY_STRUCTURE 96#undef MD_STARTFILE_PREFIX 97#define MD_STARTFILE_PREFIX "/usr/ccs/lib/" 98#endif 99 100/* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default 101 standard C library (unless we are building a shared library). */ 102 103#undef LIB_SPEC 104#define LIB_SPEC "%{!shared:%{!symbolic:-lc}}" 105 106/* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own 107 magical crtend.o file (see crtstuff.c) which provides part of the 108 support for getting C++ file-scope static object constructed before 109 entering `main', followed by the normal svr3/svr4 "finalizer" file, 110 which is either `gcrtn.o' or `crtn.o'. */ 111 112#undef ENDFILE_SPEC 113#define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o%s}%{!pg:crtn.o%s}" 114 115/* Provide a LINK_SPEC appropriate for svr4. Here we provide support 116 for the special GCC options -static, -shared, and -symbolic which 117 allow us to link things in one of these three modes by applying the 118 appropriate combinations of options at link-time. We also provide 119 support here for as many of the other svr4 linker options as seems 120 reasonable, given that some of them conflict with options for other 121 svr4 tools (e.g. the assembler). In particular, we do support the 122 -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*, -l*, 123 -o*, -r, -s, -u*, and -L* options are directly supported by gcc.c 124 itself. We don't directly support the -m (generate load map) 125 option because that conflicts with the -m (run m4) option of the 126 svr4 assembler. We also don't directly support the svr4 linker's 127 -I* or -M* options because these conflict with existing GCC 128 options. We do however allow passing arbitrary options to the svr4 129 linker via the -Wl, option, in gcc.c. We don't support the svr4 130 linker's -a option at all because it is totally useless and because 131 it conflicts with GCC's own -a option. 132 133 Note that gcc doesn't allow a space to follow -Y in a -YP,* option. 134 135 When the -G link option is used (-shared and -symbolic) a final link is 136 not being done. */ 137 138#undef LINK_SPEC 139#ifdef CROSS_DIRECTORY_STRUCTURE 140#define LINK_SPEC "%{h*} %{v:-V} \ 141 %{b} \ 142 %{static:-dn -Bstatic} \ 143 %{shared:-G -dy -z text} \ 144 %{symbolic:-Bsymbolic -G -dy -z text} \ 145 %{G:-G} \ 146 %{YP,*} \ 147 %{Qy:} %{!Qn:-Qy}" 148#else 149#define LINK_SPEC "%{h*} %{v:-V} \ 150 %{b} \ 151 %{static:-dn -Bstatic} \ 152 %{shared:-G -dy -z text} \ 153 %{symbolic:-Bsymbolic -G -dy -z text} \ 154 %{G:-G} \ 155 %{YP,*} \ 156 %{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ 157 %{!p:-Y P,/usr/ccs/lib:/usr/lib}} \ 158 %{Qy:} %{!Qn:-Qy}" 159#endif 160 161/* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o 162 or /usr/ccs/lib/values-Xa.o for each final link step (depending 163 upon the other gcc options selected, such as -ansi). These files 164 each contain one (initialized) copy of a special variable called 165 `_lib_version'. Each one of these files has `_lib_version' initialized 166 to a different (enum) value. The SVR4 library routines query the 167 value of `_lib_version' at run to decide how they should behave. 168 Specifically, they decide (based upon the value of `_lib_version') 169 if they will act in a strictly ANSI conforming manner or not. */ 170 171#undef STARTFILE_SPEC 172#define STARTFILE_SPEC "%{!shared: \ 173 %{!symbolic: \ 174 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\ 175 %{pg:gcrti.o%s}%{!pg:crti.o%s} \ 176 %{ansi:values-Xc.o%s} \ 177 %{!ansi:values-Xa.o%s} \ 178 crtbegin.o%s" 179 180/* The numbers used to denote specific machine registers in the System V 181 Release 4 DWARF debugging information are quite likely to be totally 182 different from the numbers used in BSD stabs debugging information 183 for the same kind of target machine. Thus, we undefine the macro 184 DBX_REGISTER_NUMBER here as an extra inducement to get people to 185 provide proper machine-specific definitions of DBX_REGISTER_NUMBER 186 (which is also used to provide DWARF registers numbers in dwarfout.c) 187 in their tm.h files which include this file. */ 188 189#undef DBX_REGISTER_NUMBER 190 191/* Define the actual types of some ANSI-mandated types. (These 192 definitions should work for most SVR4 systems). */ 193 194#undef SIZE_TYPE 195#define SIZE_TYPE "unsigned int" 196 197#undef PTRDIFF_TYPE 198#define PTRDIFF_TYPE "int" 199 200#undef WCHAR_TYPE 201#define WCHAR_TYPE "long int" 202 203#undef WCHAR_TYPE_SIZE 204#define WCHAR_TYPE_SIZE BITS_PER_WORD 205 206#define TARGET_POSIX_IO 207