gcc/config/ia64/hpux.h

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 1999-2014 Free Software Foundation, Inc.
   3    Contributed by Steve Ellcey <sje@cup.hp.com> and
   4                   Reva Cuthbertson <reva@cup.hp.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* Enable HPUX ABI quirks.  */
  23 #undef  TARGET_HPUX
  24 #define TARGET_HPUX 1
  25
  26 #undef WCHAR_TYPE
  27 #define WCHAR_TYPE "unsigned int"
  28
  29 #undef WCHAR_TYPE_SIZE
  30 #define WCHAR_TYPE_SIZE 32
  31
  32 /* Target OS builtins.  */
  33 #define TARGET_OS_CPP_BUILTINS()                        \
  34 do {                                                    \
  35         builtin_assert("system=hpux");                  \
  36         builtin_assert("system=posix");                 \
  37         builtin_assert("system=unix");                  \
  38         builtin_define_std("hpux");                     \
  39         builtin_define_std("unix");                     \
  40         builtin_define("__IA64__");                     \
  41         builtin_define("_LONGLONG");                    \
  42         builtin_define("_INCLUDE_LONGLONG");            \
  43         builtin_define("__STDC_EXT__");                 \
  44         builtin_define("_UINT128_T");                   \
  45         if (c_dialect_cxx () || !flag_iso)              \
  46           {                                             \
  47             builtin_define("_HPUX_SOURCE");             \
  48             builtin_define("__STDCPP__");               \
  49             builtin_define("_INCLUDE__STDC_A1_SOURCE"); \
  50           }                                             \
  51         if (TARGET_ILP32)                               \
  52           builtin_define("_ILP32");                     \
  53 } while (0)
  54
  55 #undef CPP_SPEC
  56 #define CPP_SPEC \
  57   "%{mt|pthread:-D_REENTRANT -D_THREAD_SAFE -D_POSIX_C_SOURCE=199506L}"
  58 /* aCC defines also -DRWSTD_MULTI_THREAD, -DRW_MULTI_THREAD.  These
  59    affect only aCC's C++ library (Rogue Wave-derived) which we do not
  60    use, and they violate the user's name space.  */
  61
  62 #undef  ASM_EXTRA_SPEC
  63 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
  64
  65 #ifndef USE_GAS
  66 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
  67 #endif
  68
  69 #ifndef CROSS_DIRECTORY_STRUCTURE
  70 #undef MD_EXEC_PREFIX
  71 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
  72
  73 #undef MD_STARTFILE_PREFIX
  74 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
  75 #endif
  76
  77 #undef ENDFILE_SPEC
  78
  79 #undef STARTFILE_SPEC
  80 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s} \
  81                           %{mlp64:/usr/lib/hpux64/unix98%O%s} \
  82                           %{!mlp64:/usr/lib/hpux32/unix98%O%s}}"
  83
  84 #undef LINK_SPEC
  85 #define LINK_SPEC \
  86   "-z +Accept TypeMismatch \
  87    %{shared:-b} \
  88    %{!shared: \
  89      -u main \
  90      %{static:-noshared}}"
  91
  92 #undef  LIB_SPEC
  93 #define LIB_SPEC \
  94   "%{!shared: \
  95      %{mt|pthread:%{fopenmp|ftree-parallelize-loops=*:-lrt} -lpthread} \
  96      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
  97          %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
  98      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
  99           %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
 100      %{!symbolic:-lc}}"
 101
 102 #define MULTILIB_DEFAULTS { "milp32" }
 103
 104 /* A C expression whose value is zero if pointers that need to be extended
 105    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
 106    greater then zero if they are zero-extended and less then zero if the
 107    ptr_extend instruction should be used.  */
 108
 109 #define POINTERS_EXTEND_UNSIGNED -1
 110
 111 #define JMP_BUF_SIZE  (8 * 76)
 112
 113 #undef TARGET_DEFAULT
 114 #define TARGET_DEFAULT \
 115   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
 116
 117 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 118    but that doesn't put out the @function type information which causes
 119    shared library problems.  */
 120
 121 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 122 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 123 do {                                                            \
 124   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 125   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 126 } while (0)
 127
 128 #undef FUNCTION_ARG_PADDING
 129 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
 130         ia64_hpux_function_arg_padding ((MODE), (TYPE))
 131
 132 #undef PAD_VARARGS_DOWN
 133 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 134
 135 #define REGISTER_TARGET_PRAGMAS() \
 136   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 137
 138 /* Tell ia64.c that we are using the HP linker and we should delay output of
 139    function extern declarations so that we don't output them for functions
 140    which are never used (and may not be defined).  */
 141
 142 #undef TARGET_HPUX_LD
 143 #define TARGET_HPUX_LD  1
 144
 145 /* The HPUX dynamic linker objects to weak symbols with no
 146    definitions, so do not use them in gthr-posix.h.  */
 147 #define GTHREAD_USE_WEAK 0
 148
 149 #undef CTORS_SECTION_ASM_OP
 150 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 151
 152 #undef DTORS_SECTION_ASM_OP
 153 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 154
 155 /* The init_array/fini_array technique does not permit the use of
 156    initialization priorities.  */
 157 #define SUPPORTS_INIT_PRIORITY 0
 158
 159 #undef READONLY_DATA_SECTION_ASM_OP
 160 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 161
 162 #undef DATA_SECTION_ASM_OP
 163 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 164
 165 #undef SDATA_SECTION_ASM_OP
 166 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 167
 168 #undef BSS_SECTION_ASM_OP
 169 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 170
 171 #undef SBSS_SECTION_ASM_OP
 172 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 173
 174 #undef TEXT_SECTION_ASM_OP
 175 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 176
 177 /* It is illegal to have relocations in shared segments on HPUX.
 178    Pretend flag_pic is always set.  */
 179 #undef  TARGET_ASM_RELOC_RW_MASK
 180 #define TARGET_ASM_RELOC_RW_MASK  ia64_hpux_reloc_rw_mask
 181
 182 /* ia64 HPUX has the float and long double forms of math functions.
 183    We redefine this hook so the version from elfos.h header won't be used.  */
 184 #undef TARGET_LIBC_HAS_FUNCTION
 185 #define TARGET_LIBC_HAS_FUNCTION default_libc_has_function
 186
 187 #undef TARGET_INIT_LIBFUNCS
 188 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
 189
 190 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
 191
 192 /* HP-UX headers are C++-compatible.  */
 193 #define NO_IMPLICIT_EXTERN_C
 194
 195 /* HP-UX uses PROFILE_HOOK instead of FUNCTION_PROFILER but we need a
 196    FUNCTION_PROFILER defined because its use is not ifdefed.  When using
 197    PROFILE_HOOK, the profile call comes after the prologue.  */
 198
 199 #undef FUNCTION_PROFILER
 200 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
 201
 202 #undef PROFILE_HOOK
 203 #define PROFILE_HOOK(LABEL) ia64_profile_hook (LABEL)
 204
 205 #undef  PROFILE_BEFORE_PROLOGUE
 206
 207 #undef NO_PROFILE_COUNTERS
 208 #define NO_PROFILE_COUNTERS 0
 209
 210 /* The HP-UX linker has a bug that causes calls from functions in
 211    .text.unlikely to functions in .text to cause a segfault.  Until
 212    it is fixed, prevent code from being put into .text.unlikely or
 213    .text.hot.  */
 214
 215 #define TARGET_ASM_FUNCTION_SECTION ia64_hpux_function_section
 216
 217 #define TARGET_POSIX_IO
 218
 219 /* Define this to be nonzero if static stack checking is supported.  */
 220 #define STACK_CHECK_STATIC_BUILTIN 1
 221
 222 /* Minimum amount of stack required to recover from an anticipated stack
 223    overflow detection.  */
 224 #define STACK_CHECK_PROTECT (24 * 1024)