gcc/config/ia64/hpux.h

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005
   3    Free Software Foundation, Inc.
   4    Contributed by Steve Ellcey <sje@cup.hp.com> and
   5                   Reva Cuthbertson <reva@cup.hp.com>
   6
   7 This file is part of GCC.
   8
   9 GCC 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 GCC 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 GCC; see the file COPYING.  If not, write to
  21 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  22 Boston, MA 02110-1301, USA.  */
  23
  24 /* This macro is a C statement to print on `stderr' a string describing the
  25    particular machine description choice.  */
  26
  27 #define TARGET_VERSION fprintf (stderr, " (IA-64) HP-UX");
  28
  29 /* Enable HPUX ABI quirks.  */
  30 #undef  TARGET_HPUX
  31 #define TARGET_HPUX 1
  32
  33 #undef WCHAR_TYPE
  34 #define WCHAR_TYPE "unsigned int"
  35
  36 #undef WCHAR_TYPE_SIZE
  37 #define WCHAR_TYPE_SIZE 32
  38
  39 /* Target OS builtins.  */
  40 #define TARGET_OS_CPP_BUILTINS()                        \
  41 do {                                                    \
  42         builtin_assert("system=hpux");                  \
  43         builtin_assert("system=posix");                 \
  44         builtin_assert("system=unix");                  \
  45         builtin_define_std("hpux");                     \
  46         builtin_define_std("unix");                     \
  47         builtin_define("__IA64__");                     \
  48         builtin_define("_LONGLONG");                    \
  49         builtin_define("_INCLUDE_LONGLONG");            \
  50         builtin_define("_UINT128_T");                   \
  51         if (c_dialect_cxx () || !flag_iso)              \
  52           {                                             \
  53             builtin_define("_HPUX_SOURCE");             \
  54             builtin_define("__STDC_EXT__");             \
  55             builtin_define("__STDCPP__");               \
  56           }                                             \
  57         if (TARGET_ILP32)                               \
  58           builtin_define("_ILP32");                     \
  59 } while (0)
  60
  61 #undef CPP_SPEC
  62 #define CPP_SPEC \
  63   "%{mt|pthread:-D_REENTRANT -D_THREAD_SAFE -D_POSIX_C_SOURCE=199506L}"
  64 /* aCC defines also -DRWSTD_MULTI_THREAD, -DRW_MULTI_THREAD.  These
  65    affect only aCC's C++ library (Rogue Wave-derived) which we do not
  66    use, and they violate the user's name space.  */
  67
  68 #undef  ASM_EXTRA_SPEC
  69 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
  70
  71 #undef ENDFILE_SPEC
  72
  73 #undef STARTFILE_SPEC
  74 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s}}"
  75
  76 #undef LINK_SPEC
  77 #define LINK_SPEC \
  78   "-z +Accept TypeMismatch \
  79    %{shared:-b} \
  80    %{!shared: \
  81      -u main \
  82      %{static:-noshared}}"
  83
  84 #undef  LIB_SPEC
  85 #define LIB_SPEC \
  86   "%{!shared: \
  87      %{mt|pthread:-lpthread} \
  88      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
  89          %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
  90      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
  91           %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
  92      %{!symbolic:-lc}}"
  93
  94 #define MULTILIB_DEFAULTS { "milp32" }
  95
  96 /* A C expression whose value is zero if pointers that need to be extended
  97    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
  98    greater then zero if they are zero-extended and less then zero if the
  99    ptr_extend instruction should be used.  */
 100
 101 #define POINTERS_EXTEND_UNSIGNED -1
 102
 103 #define JMP_BUF_SIZE  (8 * 76)
 104
 105 #undef TARGET_DEFAULT
 106 #define TARGET_DEFAULT \
 107   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
 108
 109 /* This needs to be set to force structure arguments with a single
 110    integer field to be treated as structures and not as the type of
 111    their field.  Without this a structure with a single char will be
 112    returned just like a char variable, instead of being returned at the
 113    top of the register as specified for big-endian IA64.  */
 114
 115 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
 116   (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
 117
 118 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 119    but that doesn't put out the @function type information which causes
 120    shared library problems.  */
 121
 122 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 123 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 124 do {                                                            \
 125   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 126   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 127 } while (0)
 128
 129 #undef FUNCTION_ARG_PADDING
 130 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
 131         ia64_hpux_function_arg_padding ((MODE), (TYPE))
 132
 133 #undef PAD_VARARGS_DOWN
 134 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 135
 136 #define REGISTER_TARGET_PRAGMAS() \
 137   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 138
 139 /* Tell ia64.c that we are using the HP linker and we should delay output of
 140    function extern declarations so that we don't output them for functions
 141    which are never used (and may not be defined).  */
 142
 143 #undef TARGET_HPUX_LD
 144 #define TARGET_HPUX_LD  1
 145
 146 /* The HPUX dynamic linker objects to weak symbols with no
 147    definitions, so do not use them in gthr-posix.h.  */
 148 #define GTHREAD_USE_WEAK 0
 149
 150 /* Put out the needed function declarations at the end.  */
 151
 152 #define TARGET_ASM_FILE_END ia64_hpux_file_end
 153
 154 #undef CTORS_SECTION_ASM_OP
 155 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 156
 157 #undef DTORS_SECTION_ASM_OP
 158 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 159
 160 /* The init_array/fini_array technique does not permit the use of
 161    initialization priorities.  */
 162 #define SUPPORTS_INIT_PRIORITY 0
 163
 164 #undef READONLY_DATA_SECTION_ASM_OP
 165 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 166
 167 #undef DATA_SECTION_ASM_OP
 168 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 169
 170 #undef SDATA_SECTION_ASM_OP
 171 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 172
 173 #undef BSS_SECTION_ASM_OP
 174 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 175
 176 #undef SBSS_SECTION_ASM_OP
 177 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 178
 179 #undef TEXT_SECTION_ASM_OP
 180 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 181
 182 /* It is illegal to have relocations in shared segments on HPUX.
 183    Pretend flag_pic is always set.  */
 184 #undef  TARGET_ASM_SELECT_SECTION
 185 #define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
 186 #undef  TARGET_ASM_UNIQUE_SECTION
 187 #define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
 188 #undef  TARGET_ASM_SELECT_RTX_SECTION
 189 #define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
 190 #define TARGET_RWRELOC  true
 191
 192 /* ia64 HPUX has the float and long double forms of math functions.  */
 193 #undef TARGET_C99_FUNCTIONS
 194 #define TARGET_C99_FUNCTIONS  1
 195
 196 #undef TARGET_INIT_LIBFUNCS
 197 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
 198
 199 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
 200
 201 /* Put all *xf routines in libgcc, regardless of long double size.  */
 202 #undef LIBGCC2_HAS_XF_MODE
 203 #define LIBGCC2_HAS_XF_MODE 1
 204
 205 /* Put all *tf routines in libgcc, regardless of long double size.  */
 206 #undef LIBGCC2_HAS_TF_MODE
 207 #define LIBGCC2_HAS_TF_MODE 1
 208
 209 /* HP-UX headers are C++-compatible.  */
 210 #define NO_IMPLICIT_EXTERN_C
 211
 212 /* HP-UX uses PROFILE_HOOK instead of FUNCTION_PROFILER but we need a
 213    FUNCTION_PROFILER defined because its use is not ifdefed.  When using
 214    PROFILE_HOOK, the profile call comes after the prologue.  */
 215
 216 #undef FUNCTION_PROFILER
 217 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
 218
 219 #undef PROFILE_HOOK
 220 #define PROFILE_HOOK(LABEL) ia64_profile_hook (LABEL)
 221
 222 #undef  PROFILE_BEFORE_PROLOGUE
 223
 224 #undef NO_PROFILE_COUNTERS
 225 #define NO_PROFILE_COUNTERS 0