gcc/config/pa/pa-linux.h

   1 /* Definitions for PA_RISC with ELF format
   2    Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   3    Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC 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 GCC 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 GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22
  23 #undef TARGET_OS_CPP_BUILTINS
  24 #define TARGET_OS_CPP_BUILTINS()                \
  25   do                                            \
  26     {                                           \
  27         LINUX_TARGET_OS_CPP_BUILTINS();         \
  28         builtin_assert ("machine=bigendian");   \
  29     }                                           \
  30   while (0)
  31
  32 #undef CPP_SPEC
  33 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
  34
  35 #undef  LIB_SPEC
  36 #define LIB_SPEC \
  37   "%{pthread:-lpthread} \
  38    %{shared:-lgcc -lc} \
  39    %{!shared:%{mieee-fp:-lieee} %{shared-libgcc:-lgcc} %{profile:-lc_p}%{!profile:-lc}}"
  40
  41 #undef ASM_SPEC
  42 #define ASM_SPEC \
  43   "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
  44
  45 /* Define this for shared library support because it isn't in the main
  46    linux.h file.  */
  47
  48 #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
  49
  50 #undef LINK_SPEC
  51 #define LINK_SPEC "\
  52   %{shared:-shared} \
  53   %{!shared: \
  54     %{!static: \
  55       %{rdynamic:-export-dynamic} \
  56       %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "}} \
  57       %{static:-static}}"
  58
  59 /* glibc's profiling functions don't need gcc to allocate counters.  */
  60 #define NO_DEFERRED_PROFILE_COUNTERS 1
  61
  62 /* Define the strings used for the special svr4 .type and .size directives.
  63    These strings generally do not vary from one system running svr4 to
  64    another, but if a given system (e.g. m88k running svr) needs to use
  65    different pseudo-op names for these, they may be overridden in the
  66    file which includes this one.  */
  67
  68 #undef STRING_ASM_OP
  69 #define STRING_ASM_OP   ".stringz"
  70
  71 #define TEXT_SECTION_ASM_OP "\t.text"
  72 #define DATA_SECTION_ASM_OP "\t.data"
  73 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
  74
  75 #define TARGET_ASM_FILE_START pa_linux_file_start
  76
  77 /* We want local labels to start with period if made with asm_fprintf.  */
  78 #undef LOCAL_LABEL_PREFIX
  79 #define LOCAL_LABEL_PREFIX "."
  80
  81 /* Define these to generate the Linux/ELF/SysV style of internal
  82    labels all the time - i.e. to be compatible with
  83    ASM_GENERATE_INTERNAL_LABEL in <elfos.h>.  Compare these with the
  84    ones in pa.h and note the lack of dollar signs in these.  FIXME:
  85    shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
  86
  87 #undef ASM_OUTPUT_ADDR_VEC_ELT
  88 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
  89   if (TARGET_BIG_SWITCH)                                        \
  90     fprintf (FILE, "\t.word .L%d\n", VALUE);                    \
  91   else                                                          \
  92     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
  93
  94 #undef ASM_OUTPUT_ADDR_DIFF_ELT
  95 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
  96   if (TARGET_BIG_SWITCH)                                        \
  97     fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL);          \
  98   else                                                          \
  99     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)
 100
 101 /* Use the default.  */
 102 #undef ASM_OUTPUT_LABEL
 103
 104 /* NOTE: (*targetm.asm_out.internal_label)() is defined for us by elfos.h, and
 105    does what we want (i.e. uses colons).  It must be compatible with
 106    ASM_GENERATE_INTERNAL_LABEL(), so do not define it here.  */
 107
 108 /* Use the default.  */
 109 #undef TARGET_ASM_GLOBALIZE_LABEL
 110 /* Globalizing directive for a label.  */
 111 #define GLOBAL_ASM_OP ".globl "
 112
 113 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
 114    labels in a function declaration (since pa.c seems determined to do
 115    it differently)  */
 116
 117 #undef ASM_DECLARE_FUNCTION_NAME
 118 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 119   do                                                            \
 120     {                                                           \
 121       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");       \
 122       ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));            \
 123     }                                                           \
 124   while (0)
 125
 126 /* As well as globalizing the label, we need to encode the label
 127    to ensure a plabel is generated in an indirect call.  */
 128
 129 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 130 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 131   do                                                            \
 132     {                                                           \
 133       if (!FUNCTION_NAME_P (XSTR (FUN, 0)))                     \
 134         hppa_encode_label (FUN);                                \
 135       (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
 136     }                                                           \
 137   while (0)
 138
 139 /* Linux always uses gas.  */
 140 #undef TARGET_GAS
 141 #define TARGET_GAS 1