gcc/config/pa/pa-linux.h

   1 /* Definitions for PA_RISC with ELF format
   2    Copyright (C) 1999-2020 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20
  21 #undef TARGET_OS_CPP_BUILTINS
  22 #define TARGET_OS_CPP_BUILTINS()                \
  23   do                                            \
  24     {                                           \
  25         GNU_USER_TARGET_OS_CPP_BUILTINS();      \
  26         builtin_assert ("machine=bigendian");   \
  27     }                                           \
  28   while (0)
  29
  30 #undef CPP_SPEC
  31 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
  32
  33 #undef ASM_SPEC
  34 #define ASM_SPEC \
  35   ""
  36
  37 /* Define this for shared library support because it isn't in the main
  38    linux.h file.  */
  39
  40 #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
  41
  42 #undef LINK_SPEC
  43 #define LINK_SPEC "\
  44   %{shared:-shared} \
  45   %{!shared: \
  46     %{!static: \
  47       %{rdynamic:-export-dynamic} \
  48       -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
  49       %{static:-static}}"
  50
  51 /* glibc's profiling functions don't need gcc to allocate counters.  */
  52 #define NO_DEFERRED_PROFILE_COUNTERS 1
  53
  54 /* Define the strings used for the special svr4 .type and .size directives.
  55    These strings generally do not vary from one system running svr4 to
  56    another, but if a given system (e.g. m88k running svr) needs to use
  57    different pseudo-op names for these, they may be overridden in the
  58    file which includes this one.  */
  59
  60 #undef STRING_ASM_OP
  61 #define STRING_ASM_OP   "\t.stringz\t"
  62
  63 #define TEXT_SECTION_ASM_OP "\t.text"
  64 #define DATA_SECTION_ASM_OP "\t.data"
  65 #define BSS_SECTION_ASM_OP "\t.section\t.bss"
  66
  67 #define TARGET_ASM_FILE_START pa_linux_file_start
  68
  69 /* We want local labels to start with period if made with asm_fprintf.  */
  70 #undef LOCAL_LABEL_PREFIX
  71 #define LOCAL_LABEL_PREFIX "."
  72
  73 /* Define these to generate the Linux/ELF/SysV style of internal
  74    labels all the time - i.e. to be compatible with
  75    ASM_GENERATE_INTERNAL_LABEL in <elfos.h>.  Compare these with the
  76    ones in pa.h and note the lack of dollar signs in these.  FIXME:
  77    shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */
  78
  79 #undef ASM_OUTPUT_ADDR_VEC_ELT
  80 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
  81   fprintf (FILE, "\t.word .L%d\n", VALUE)
  82
  83 #undef ASM_OUTPUT_ADDR_DIFF_ELT
  84 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
  85   fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
  86
  87 /* Use the default.  */
  88 #undef ASM_OUTPUT_LABEL
  89
  90 /* NOTE: (*targetm.asm_out.internal_label)() is defined for us by elfos.h, and
  91    does what we want (i.e. uses colons).  It must be compatible with
  92    ASM_GENERATE_INTERNAL_LABEL(), so do not define it here.  */
  93
  94 /* Use the default.  */
  95 #undef ASM_OUTPUT_INTERNAL_LABEL
  96
  97 /* Use the default.  */
  98 #undef TARGET_ASM_GLOBALIZE_LABEL
  99 /* Globalizing directive for a label.  */
 100 #define GLOBAL_ASM_OP ".globl "
 101
 102 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
 103    labels in a function declaration (since pa.c seems determined to do
 104    it differently).  */
 105
 106 #undef ASM_DECLARE_FUNCTION_NAME
 107 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 108   do                                                            \
 109     {                                                           \
 110       ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");       \
 111       ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));            \
 112       pa_output_function_label (FILE);                          \
 113     }                                                           \
 114   while (0)
 115
 116 /* Output function prologue for linux.  */
 117 #undef TARGET_ASM_FUNCTION_PROLOGUE
 118 #define TARGET_ASM_FUNCTION_PROLOGUE pa_linux_output_function_prologue
 119
 120 /* As well as globalizing the label, we need to encode the label
 121    to ensure a plabel is generated in an indirect call.  */
 122
 123 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 124 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 125   do                                                            \
 126     {                                                           \
 127       if (!FUNCTION_NAME_P (XSTR (FUN, 0)))                     \
 128         pa_encode_label (FUN);                                  \
 129       (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
 130     }                                                           \
 131   while (0)
 132
 133 #undef TARGET_GAS
 134 #define TARGET_GAS 1
 135
 136 #undef TARGET_SYNC_LIBCALL
 137 #define TARGET_SYNC_LIBCALL 1
 138
 139 /* The SYNC operations are implemented as library functions, not
 140    INSN patterns.  As a result, the HAVE defines for the patterns are
 141    not defined.  We need to define them to generate the corresponding
 142    __GCC_HAVE_SYNC_COMPARE_AND_SWAP_* and __GCC_ATOMIC_*_LOCK_FREE
 143    defines.  */
 144
 145 #define HAVE_sync_compare_and_swapqi 1
 146 #define HAVE_sync_compare_and_swaphi 1
 147 #define HAVE_sync_compare_and_swapsi 1
 148 #define HAVE_sync_compare_and_swapdi 1
 149
 150 /* It's not possible to enable GNU_stack notes since the kernel needs
 151    an executable stack for signal returns and syscall restarts.  */
 152
 153 #undef NEED_INDICATE_EXEC_STACK
 154 #define NEED_INDICATE_EXEC_STACK 0