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 7 This file is part of GNU CC. 8 9 GNU CC is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2, or (at your option) 12 any later version. 13 14 GNU CC is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GNU CC; see the file COPYING. If not, write to 21 the Free Software Foundation, 59 Temple Place - Suite 330, 22 Boston, MA 02111-1307, 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. For example, CPP_PREDEFINES is defined here with only the 32 defined -Dunix and -DSVR4. You should probably override that in your 33 target-specific MACHINE/svr4.h file with a set of defines that 34 includes these, but also contains an appropriate define for the type 35 of hardware that you are targeting. 36 */ 37 38 /* Define a symbol indicating that we are using svr4.h. */ 39 #define USING_SVR4_H 40 41 /* Cpp, assembler, linker, library, and startfile spec's. */ 42 43 /* This defines which switch letters take arguments. On svr4, most of 44 the normal cases (defined in gcc.c) apply, and we also have -h* and 45 -z* options (for the linker). Note however that there is no such 46 thing as a -T option for svr4. */ 47 48 #define SWITCH_TAKES_ARG(CHAR) \ 49 (DEFAULT_SWITCH_TAKES_ARG (CHAR) \ 50 || (CHAR) == 'h' \ 51 || (CHAR) == 'x' \ 52 || (CHAR) == 'z') 53 54 /* This defines which multi-letter switches take arguments. On svr4, 55 there are no such switches except those implemented by GCC itself. */ 56 57 #define WORD_SWITCH_TAKES_ARG(STR) \ 58 (DEFAULT_WORD_SWITCH_TAKES_ARG (STR) \ 59 && strcmp (STR, "Tdata") && strcmp (STR, "Ttext") \ 60 && strcmp (STR, "Tbss")) 61 62 /* You should redefine CPP_PREDEFINES in any file which includes this one. 63 The definition should be appropriate for the type of target system 64 involved, and it should include any -A (assertion) options which are 65 appropriate for the given target system. */ 66 #undef CPP_PREDEFINES 67 68 /* Provide an ASM_SPEC appropriate for svr4. Here we try to support as 69 many of the specialized svr4 assembler options as seems reasonable, 70 given that there are certain options which we can't (or shouldn't) 71 support directly due to the fact that they conflict with other options 72 for other svr4 tools (e.g. ld) or with other options for GCC itself. 73 For example, we don't support the -o (output file) or -R (remove 74 input file) options because GCC already handles these things. We 75 also don't support the -m (run m4) option for the assembler because 76 that conflicts with the -m (produce load map) option of the svr4 77 linker. We do however allow passing arbitrary options to the svr4 78 assembler via the -Wa, option. 79 80 Note that gcc doesn't allow a space to follow -Y in a -Ym,* or -Yd,* 81 option. 82 */ 83 84 #undef ASM_SPEC 85 #define ASM_SPEC \ 86 "%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}" 87 88 /* svr4 assemblers need the `-' (indicating input from stdin) to come after 89 the -o option (and its argument) for some reason. If we try to put it 90 before the -o option, the assembler will try to read the file named as 91 the output file in the -o option as an input file (after it has already 92 written some stuff to it) and the binary stuff contained therein will 93 cause totally confuse the assembler, resulting in many spurious error 94 messages. */ 95 96 #undef ASM_FINAL_SPEC 97 #define ASM_FINAL_SPEC "%|" 98 99 /* Under svr4, the normal location of the `ld' and `as' programs is the 100 /usr/ccs/bin directory. */ 101 102 #ifndef CROSS_COMPILE 103 #undef MD_EXEC_PREFIX 104 #define MD_EXEC_PREFIX "/usr/ccs/bin/" 105 #endif 106 107 /* Under svr4, the normal location of the various *crt*.o files is the 108 /usr/ccs/lib directory. */ 109 110 #ifndef CROSS_COMPILE 111 #undef MD_STARTFILE_PREFIX 112 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/" 113 #endif 114 115 /* Provide a LIB_SPEC appropriate for svr4. Here we tack on the default 116 standard C library (unless we are building a shared library). */ 117 118 #undef LIB_SPEC 119 #define LIB_SPEC "%{!shared:%{!symbolic:-lc}}" 120 121 /* Provide an ENDFILE_SPEC appropriate for svr4. Here we tack on our own 122 magical crtend.o file (see crtstuff.c) which provides part of the 123 support for getting C++ file-scope static object constructed before 124 entering `main', followed by the normal svr3/svr4 "finalizer" file, 125 which is either `gcrtn.o' or `crtn.o'. */ 126 127 #undef ENDFILE_SPEC 128 #define ENDFILE_SPEC "crtend.o%s %{pg:gcrtn.o%s}%{!pg:crtn.o%s}" 129 130 /* Provide a LINK_SPEC appropriate for svr4. Here we provide support 131 for the special GCC options -static, -shared, and -symbolic which 132 allow us to link things in one of these three modes by applying the 133 appropriate combinations of options at link-time. We also provide 134 support here for as many of the other svr4 linker options as seems 135 reasonable, given that some of them conflict with options for other 136 svr4 tools (e.g. the assembler). In particular, we do support the 137 -z*, -V, -b, -t, -Qy, -Qn, and -YP* options here, and the -e*, -l*, 138 -o*, -r, -s, -u*, and -L* options are directly supported by gcc.c 139 itself. We don't directly support the -m (generate load map) 140 option because that conflicts with the -m (run m4) option of the 141 svr4 assembler. We also don't directly support the svr4 linker's 142 -I* or -M* options because these conflict with existing GCC 143 options. We do however allow passing arbitrary options to the svr4 144 linker via the -Wl, option, in gcc.c. We don't support the svr4 145 linker's -a option at all because it is totally useless and because 146 it conflicts with GCC's own -a option. 147 148 Note that gcc doesn't allow a space to follow -Y in a -YP,* option. 149 150 When the -G link option is used (-shared and -symbolic) a final link is 151 not being done. */ 152 153 #undef LINK_SPEC 154 #ifdef CROSS_COMPILE 155 #define LINK_SPEC "%{h*} %{v:-V} \ 156 %{b} \ 157 %{static:-dn -Bstatic} \ 158 %{shared:-G -dy -z text} \ 159 %{symbolic:-Bsymbolic -G -dy -z text} \ 160 %{G:-G} \ 161 %{YP,*} \ 162 %{Qy:} %{!Qn:-Qy}" 163 #else 164 #define LINK_SPEC "%{h*} %{v:-V} \ 165 %{b} \ 166 %{static:-dn -Bstatic} \ 167 %{shared:-G -dy -z text} \ 168 %{symbolic:-Bsymbolic -G -dy -z text} \ 169 %{G:-G} \ 170 %{YP,*} \ 171 %{!YP,*:%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \ 172 %{!p:-Y P,/usr/ccs/lib:/usr/lib}} \ 173 %{Qy:} %{!Qn:-Qy}" 174 #endif 175 176 /* Gcc automatically adds in one of the files /usr/ccs/lib/values-Xc.o 177 or /usr/ccs/lib/values-Xa.o for each final link step (depending 178 upon the other gcc options selected, such as -ansi). These files 179 each contain one (initialized) copy of a special variable called 180 `_lib_version'. Each one of these files has `_lib_version' initialized 181 to a different (enum) value. The SVR4 library routines query the 182 value of `_lib_version' at run to decide how they should behave. 183 Specifically, they decide (based upon the value of `_lib_version') 184 if they will act in a strictly ANSI conforming manner or not. */ 185 186 #undef STARTFILE_SPEC 187 #define STARTFILE_SPEC "%{!shared: \ 188 %{!symbolic: \ 189 %{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}}}\ 190 %{pg:gcrti.o%s}%{!pg:crti.o%s} \ 191 %{ansi:values-Xc.o%s} \ 192 %{!ansi:values-Xa.o%s} \ 193 crtbegin.o%s" 194 195 /* The numbers used to denote specific machine registers in the System V 196 Release 4 DWARF debugging information are quite likely to be totally 197 different from the numbers used in BSD stabs debugging information 198 for the same kind of target machine. Thus, we undefine the macro 199 DBX_REGISTER_NUMBER here as an extra inducement to get people to 200 provide proper machine-specific definitions of DBX_REGISTER_NUMBER 201 (which is also used to provide DWARF registers numbers in dwarfout.c) 202 in their tm.h files which include this file. */ 203 204 #undef DBX_REGISTER_NUMBER 205 206 /* Define the actual types of some ANSI-mandated types. (These 207 definitions should work for most SVR4 systems). */ 208 209 #undef SIZE_TYPE 210 #define SIZE_TYPE "unsigned int" 211 212 #undef PTRDIFF_TYPE 213 #define PTRDIFF_TYPE "int" 214 215 #undef WCHAR_TYPE 216 #define WCHAR_TYPE "long int" 217 218 #undef WCHAR_TYPE_SIZE 219 #define WCHAR_TYPE_SIZE BITS_PER_WORD 220 221 /* This causes trouble, because it requires the host machine 222 to support ANSI C. */ 223 /* #define MULTIBYTE_CHARS */ 224 225 #define TARGET_HAS_F_SETLKW 226