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, 59 Temple Place - Suite 330,
  22 Boston, MA 02111-1307, 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   "+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 #undef SUBTARGET_SWITCHES
  95 #define SUBTARGET_SWITCHES \
  96   { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
  97   { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
  98
  99 #define MULTILIB_DEFAULTS { "milp32" }
 100
 101 /* A C expression whose value is zero if pointers that need to be extended
 102    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
 103    greater then zero if they are zero-extended and less then zero if the
 104    ptr_extend instruction should be used.  */
 105
 106 #define POINTERS_EXTEND_UNSIGNED -1
 107
 108 #define JMP_BUF_SIZE  (8 * 76)
 109
 110 #undef TARGET_DEFAULT
 111 #define TARGET_DEFAULT \
 112   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32 | MASK_INLINE_FLOAT_DIV_THR)
 113
 114 /* This needs to be set to force structure arguments with a single
 115    integer field to be treated as structures and not as the type of
 116    their field.  Without this a structure with a single char will be
 117    returned just like a char variable, instead of being returned at the
 118    top of the register as specified for big-endian IA64.  */
 119
 120 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
 121   (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
 122
 123 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 124    but that doesn't put out the @function type information which causes
 125    shared library problems.  */
 126
 127 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 128 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 129 do {                                                            \
 130   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 131   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 132 } while (0)
 133
 134 #undef FUNCTION_ARG_PADDING
 135 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
 136         ia64_hpux_function_arg_padding ((MODE), (TYPE))
 137
 138 #undef PAD_VARARGS_DOWN
 139 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 140
 141 #define REGISTER_TARGET_PRAGMAS() \
 142   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 143
 144 /* Tell ia64.c that we are using the HP linker and we should delay output of
 145    function extern declarations so that we don't output them for functions
 146    which are never used (and may not be defined).  */
 147
 148 #undef TARGET_HPUX_LD
 149 #define TARGET_HPUX_LD  1
 150
 151 /* The HPUX dynamic linker objects to weak symbols with no
 152    definitions, so do not use them in gthr-posix.h.  */
 153 #define GTHREAD_USE_WEAK 0
 154
 155 /* Put out the needed function declarations at the end.  */
 156
 157 #define TARGET_ASM_FILE_END ia64_hpux_file_end
 158
 159 #undef CTORS_SECTION_ASM_OP
 160 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 161
 162 #undef DTORS_SECTION_ASM_OP
 163 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 164
 165 /* The init_array/fini_array technique does not permit the use of
 166    initialization priorities.  */
 167 #define SUPPORTS_INIT_PRIORITY 0
 168
 169 #undef READONLY_DATA_SECTION_ASM_OP
 170 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 171
 172 #undef DATA_SECTION_ASM_OP
 173 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 174
 175 #undef SDATA_SECTION_ASM_OP
 176 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 177
 178 #undef BSS_SECTION_ASM_OP
 179 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 180
 181 #undef SBSS_SECTION_ASM_OP
 182 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 183
 184 #undef TEXT_SECTION_ASM_OP
 185 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 186
 187 /* It is illegal to have relocations in shared segments on HPUX.
 188    Pretend flag_pic is always set.  */
 189 #undef  TARGET_ASM_SELECT_SECTION
 190 #define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
 191 #undef  TARGET_ASM_UNIQUE_SECTION
 192 #define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
 193 #undef  TARGET_ASM_SELECT_RTX_SECTION
 194 #define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
 195 #define TARGET_RWRELOC  true
 196
 197 /* ia64 HPUX has the float and long double forms of math functions.  */
 198 #undef TARGET_C99_FUNCTIONS
 199 #define TARGET_C99_FUNCTIONS  1
 200
 201 #undef TARGET_INIT_LIBFUNCS
 202 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
 203
 204 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
 205
 206 /* Put all *xf routines in libgcc, regardless of long double size.  */
 207 #undef LIBGCC2_HAS_XF_MODE
 208 #define LIBGCC2_HAS_XF_MODE 1
 209
 210 /* Put all *tf routines in libgcc, regardless of long double size.  */
 211 #undef LIBGCC2_HAS_TF_MODE
 212 #define LIBGCC2_HAS_TF_MODE 1