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 /* Target OS builtins.  */
  34 #define TARGET_OS_CPP_BUILTINS()                        \
  35 do {                                                    \
  36         builtin_assert("system=hpux");                  \
  37         builtin_assert("system=posix");                 \
  38         builtin_assert("system=unix");                  \
  39         builtin_define_std("hpux");                     \
  40         builtin_define_std("unix");                     \
  41         builtin_define("__IA64__");                     \
  42         builtin_define("_LONGLONG");                    \
  43         builtin_define("_INCLUDE_LONGLONG");            \
  44         builtin_define("_UINT128_T");                   \
  45         if (c_dialect_cxx () || !flag_iso)              \
  46           {                                             \
  47             builtin_define("_HPUX_SOURCE");             \
  48             builtin_define("__STDC_EXT__");             \
  49             builtin_define("__STDCPP__");               \
  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 #undef ENDFILE_SPEC
  66
  67 #undef STARTFILE_SPEC
  68 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s}}"
  69
  70 #undef LINK_SPEC
  71 #define LINK_SPEC \
  72   "+Accept TypeMismatch \
  73    %{shared:-b} \
  74    %{!shared: \
  75      -u main \
  76      %{static:-noshared}}"
  77
  78 #undef  LIB_SPEC
  79 #define LIB_SPEC \
  80   "%{!shared: \
  81      %{mt|pthread:-lpthread} \
  82      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
  83          %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
  84      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
  85           %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
  86      %{!symbolic:-lc}}"
  87
  88 #ifndef CROSS_COMPILE
  89 #undef LIBGCC_SPEC
  90 #define LIBGCC_SPEC \
  91   "%{shared-libgcc:%{!mlp64:-lgcc_s}%{mlp64:-lgcc_s_hpux64} -lgcc} \
  92    %{!shared-libgcc:-lgcc}"
  93 #endif
  94
  95 #undef SUBTARGET_SWITCHES
  96 #define SUBTARGET_SWITCHES \
  97   { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
  98   { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
  99
 100 #define MULTILIB_DEFAULTS { "milp32" }
 101
 102 /* A C expression whose value is zero if pointers that need to be extended
 103    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
 104    greater then zero if they are zero-extended and less then zero if the
 105    ptr_extend instruction should be used.  */
 106
 107 #define POINTERS_EXTEND_UNSIGNED -1
 108
 109 #define JMP_BUF_SIZE  (8 * 76)
 110
 111 #undef TARGET_DEFAULT
 112 #define TARGET_DEFAULT \
 113   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32 | MASK_INLINE_FLOAT_DIV_THR)
 114
 115 /* This needs to be set to force structure arguments with a single
 116    integer field to be treated as structures and not as the type of
 117    their field.  Without this a structure with a single char will be
 118    returned just like a char variable, instead of being returned at the
 119    top of the register as specified for big-endian IA64.  */
 120
 121 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) \
 122   (!FLOAT_MODE_P (MODE) || (MODE) == TFmode)
 123
 124 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 125    but that doesn't put out the @function type information which causes
 126    shared library problems.  */
 127
 128 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 129 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 130 do {                                                            \
 131   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 132   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 133 } while (0)
 134
 135 #undef FUNCTION_ARG_PADDING
 136 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
 137         ia64_hpux_function_arg_padding ((MODE), (TYPE))
 138
 139 #undef PAD_VARARGS_DOWN
 140 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 141
 142 #define REGISTER_TARGET_PRAGMAS() \
 143   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 144
 145 /* Tell ia64.c that we are using the HP linker and we should delay output of
 146    function extern declarations so that we don't output them for functions
 147    which are never used (and may not be defined).  */
 148
 149 #undef TARGET_HPUX_LD
 150 #define TARGET_HPUX_LD  1
 151
 152 /* The HPUX dynamic linker objects to weak symbols with no
 153    definitions, so do not use them in gthr-posix.h.  */
 154 #define GTHREAD_USE_WEAK 0
 155
 156 /* Put out the needed function declarations at the end.  */
 157
 158 #define TARGET_ASM_FILE_END ia64_hpux_file_end
 159
 160 #undef CTORS_SECTION_ASM_OP
 161 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 162
 163 #undef DTORS_SECTION_ASM_OP
 164 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 165
 166 /* The init_array/fini_array technique does not permit the use of
 167    initialization priorities.  */
 168 #define SUPPORTS_INIT_PRIORITY 0
 169
 170 #undef READONLY_DATA_SECTION_ASM_OP
 171 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 172
 173 #undef DATA_SECTION_ASM_OP
 174 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 175
 176 #undef SDATA_SECTION_ASM_OP
 177 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 178
 179 #undef BSS_SECTION_ASM_OP
 180 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 181
 182 #undef SBSS_SECTION_ASM_OP
 183 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 184
 185 #undef TEXT_SECTION_ASM_OP
 186 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 187
 188 /* It is illegal to have relocations in shared segments on HPUX.
 189    Pretend flag_pic is always set.  */
 190 #undef  TARGET_ASM_SELECT_SECTION
 191 #define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
 192 #undef  TARGET_ASM_UNIQUE_SECTION
 193 #define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
 194 #undef  TARGET_ASM_SELECT_RTX_SECTION
 195 #define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
 196 #define TARGET_RWRELOC  true
 197
 198 /* ia64 HPUX has the float and long double forms of math functions.  */
 199 #undef TARGET_C99_FUNCTIONS
 200 #define TARGET_C99_FUNCTIONS  1
 201
 202 #undef TARGET_INIT_LIBFUNCS
 203 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
 204
 205 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)