gcc/config/sparc/linux.h

   1 /* Definitions for SPARC running Linux-based GNU systems with ELF.
   2    Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   3    Contributed by Eddie C. Dost (ecd@skynet.be)
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #define LINUX_DEFAULT_ELF
  23
  24 #define HANDLE_PRAGMA_PACK_PUSH_POP
  25
  26 /* Don't assume anything about the header files.  */
  27 #define NO_IMPLICIT_EXTERN_C
  28
  29 /* GNU/Linux uses ctype from glibc.a. I am not sure how complete it is.
  30    For now, we play safe. It may change later.  */
  31
  32 #if 0
  33 #undef MULTIBYTE_CHARS
  34 #define MULTIBYTE_CHARS 1
  35 #endif
  36
  37 #undef MD_EXEC_PREFIX
  38 #undef MD_STARTFILE_PREFIX
  39
  40 /* Provide a STARTFILE_SPEC appropriate for GNU/Linux.  Here we add
  41    the GNU/Linux magical crtbegin.o file (see crtstuff.c) which
  42    provides part of the support for getting C++ file-scope static
  43    object constructed before entering `main'.  */
  44
  45 #undef  STARTFILE_SPEC
  46 #ifdef USE_GNULIBC_1
  47 #define STARTFILE_SPEC \
  48   "%{!shared: \
  49      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
  50    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
  51 #else
  52 #define STARTFILE_SPEC \
  53   "%{!shared: \
  54      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
  55    crti.o%s %{static:crtbeginT.o%s}\
  56    %{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
  57 #endif
  58
  59 /* Provide a ENDFILE_SPEC appropriate for GNU/Linux.  Here we tack on
  60    the GNU/Linux magical crtend.o file (see crtstuff.c) which
  61    provides part of the support for getting C++ file-scope static
  62    object constructed before entering `main', followed by a normal
  63    GNU/Linux "finalizer" file, `crtn.o'.  */
  64
  65 #undef  ENDFILE_SPEC
  66 #define ENDFILE_SPEC \
  67   "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
  68
  69 /* This is for -profile to use -lc_p instead of -lc.  */
  70 #undef  CC1_SPEC
  71 #define CC1_SPEC "%{profile:-p} \
  72 %{sun4:} %{target:} \
  73 %{mcypress:-mcpu=cypress} \
  74 %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \
  75 %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \
  76 "
  77
  78 /* The GNU C++ standard library requires that these macros be defined.  */
  79 #undef CPLUSPLUS_CPP_SPEC
  80 #define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
  81
  82 #undef TARGET_VERSION
  83 #define TARGET_VERSION fprintf (stderr, " (sparc GNU/Linux with ELF)");
  84
  85 #undef SUBTARGET_SWITCHES
  86 #define SUBTARGET_SWITCHES \
  87 {"long-double-64", -MASK_LONG_DOUBLE_128, N_("Use 64 bit long doubles") }, \
  88 {"long-double-128", MASK_LONG_DOUBLE_128, N_("Use 128 bit long doubles") },
  89
  90 #undef SIZE_TYPE
  91 #define SIZE_TYPE "unsigned int"
  92
  93 #undef PTRDIFF_TYPE
  94 #define PTRDIFF_TYPE "int"
  95
  96 #undef WCHAR_TYPE
  97 #define WCHAR_TYPE "int"
  98
  99 #undef WCHAR_TYPE_SIZE
 100 #define WCHAR_TYPE_SIZE 32
 101
 102 #undef CPP_PREDEFINES
 103 #define CPP_PREDEFINES "-D__ELF__ -Dunix -D__sparc__ -Dlinux -Asystem=unix -Asystem=posix"
 104
 105 #undef CPP_SUBTARGET_SPEC
 106 #ifdef USE_GNULIBC_1
 107 #define CPP_SUBTARGET_SPEC \
 108 "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
 109 %{mlong-double-128:-D__LONG_DOUBLE_128__}"
 110 #else
 111 #define CPP_SUBTARGET_SPEC \
 112 "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
 113 %{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}"
 114 #endif
 115
 116 #undef LIB_SPEC
 117 /* We no longer link with libc_p.a or libg.a by default. If you
 118    want to profile or debug the GNU/Linux C library, please add
 119    -lc_p or -ggdb to LDFLAGS at the link time, respectively.  */
 120 #if 1
 121 #ifdef USE_GNULIBC_1
 122 #define LIB_SPEC \
 123   "%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p} \
 124      %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}"
 125 #else
 126 #define LIB_SPEC \
 127   "%{shared: -lc} \
 128    %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
 129      %{profile:-lc_p} %{!profile: -lc}}"
 130 #endif
 131 #else
 132 #define LIB_SPEC \
 133   "%{!shared: \
 134      %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
 135        %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
 136 #endif
 137
 138 /* Provide a LINK_SPEC appropriate for GNU/Linux.  Here we provide support
 139    for the special GCC options -static and -shared, which allow us to
 140    link things in one of these three modes by applying the appropriate
 141    combinations of options at link-time. We like to support here for
 142    as many of the other GNU linker options as possible. But I don't
 143    have the time to search for those flags. I am sure how to add
 144    support for -soname shared_object_name. H.J.
 145
 146    I took out %{v:%{!V:-V}}. It is too much :-(. They can use
 147    -Wl,-V.
 148
 149    When the -shared link option is used a final link is not being
 150    done.  */
 151
 152 /* If ELF is the default format, we should not use /lib/elf.  */
 153
 154 #undef  LINK_SPEC
 155 #ifdef USE_GNULIBC_1
 156 #ifndef LINUX_DEFAULT_ELF
 157 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
 158   %{!shared: \
 159     %{!ibcs: \
 160       %{!static: \
 161         %{rdynamic:-export-dynamic} \
 162         %{!dynamic-linker:-dynamic-linker /lib/elf/ld-linux.so.1} \
 163         %{!rpath:-rpath /lib/elf/}} %{static:-static}}}"
 164 #else
 165 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
 166   %{!shared: \
 167     %{!ibcs: \
 168       %{!static: \
 169         %{rdynamic:-export-dynamic} \
 170         %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.1}} \
 171         %{static:-static}}}"
 172 #endif
 173 #else
 174 #define LINK_SPEC "-m elf32_sparc -Y P,/usr/lib %{shared:-shared} \
 175   %{!mno-relax:%{!r:-relax}} \
 176   %{!shared: \
 177     %{!ibcs: \
 178       %{!static: \
 179         %{rdynamic:-export-dynamic} \
 180         %{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.2}} \
 181         %{static:-static}}}"
 182 #endif
 183
 184 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
 185    It's safe to pass -s always, even if -g is not used.  */
 186 #undef ASM_SPEC
 187 #define ASM_SPEC \
 188   "%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s %{fpic:-K PIC} \
 189    %{fPIC:-K PIC} %(asm_relax)"
 190
 191 /* Same as sparc.h */
 192 #undef DBX_REGISTER_NUMBER
 193 #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
 194
 195 #undef ASM_OUTPUT_ALIGNED_LOCAL
 196 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
 197 do {                                                                    \
 198   fputs ("\t.local\t", (FILE));         \
 199   assemble_name ((FILE), (NAME));                                       \
 200   putc ('\n', (FILE));                                                  \
 201   ASM_OUTPUT_ALIGNED_COMMON (FILE, NAME, SIZE, ALIGN);                  \
 202 } while (0)
 203
 204 #undef COMMON_ASM_OP
 205 #define COMMON_ASM_OP "\t.common\t"
 206
 207 #undef  LOCAL_LABEL_PREFIX
 208 #define LOCAL_LABEL_PREFIX  "."
 209
 210 /* This is how to output a definition of an internal numbered label where
 211    PREFIX is the class of label and NUM is the number within the class.  */
 212
 213 #undef  ASM_OUTPUT_INTERNAL_LABEL
 214 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 215   fprintf (FILE, ".L%s%d:\n", PREFIX, NUM)
 216
 217 /* This is how to output a reference to an internal numbered label where
 218    PREFIX is the class of label and NUM is the number within the class.  */
 219
 220 #undef  ASM_OUTPUT_INTERNAL_LABELREF
 221 #define ASM_OUTPUT_INTERNAL_LABELREF(FILE,PREFIX,NUM)   \
 222   fprintf (FILE, ".L%s%d", PREFIX, NUM)
 223
 224 /* This is how to store into the string LABEL
 225    the symbol_ref name of an internal numbered label where
 226    PREFIX is the class of label and NUM is the number within the class.
 227    This is suitable for output with `assemble_name'.  */
 228
 229 #undef  ASM_GENERATE_INTERNAL_LABEL
 230 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 231   sprintf (LABEL, "*.L%s%ld", PREFIX, (long)(NUM))
 232
 233 \f
 234 /* Define for support of TFmode long double.
 235    Sparc ABI says that long double is 4 words.  */
 236 #define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64)
 237
 238 /* Constant which presents upper bound of the above value.  */
 239 #define MAX_LONG_DOUBLE_TYPE_SIZE 128
 240
 241 /* Define this to set long double type size to use in libgcc2.c, which can
 242    not depend on target_flags.  */
 243 #ifdef __LONG_DOUBLE_128__
 244 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128
 245 #else
 246 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64
 247 #endif
 248
 249 #if !defined(USE_GNULIBC_1) && defined(HAVE_LD_EH_FRAME_HDR)
 250 #define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
 251 #endif
 252 \f
 253 /* Don't be different from other Linux platforms in this regard.  */
 254 #define HANDLE_PRAGMA_PACK_PUSH_POP