gcc/config/ia64/hpux.h

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2003 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 GNU CC.
   7
   8 GNU CC 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 2, or (at your option)
  11 any later version.
  12
  13 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 /* This macro is a C statement to print on `stderr' a string describing the
  24    particular machine description choice.  */
  25
  26 #define TARGET_VERSION fprintf (stderr, " (IA-64) HP-UX");
  27
  28 /* Target OS builtins.  */
  29 /* -D__fpreg=long double is needed to compensate for
  30    the lack of __fpreg which is a primitive type in
  31    HP C but does not exist in GNU C.  */
  32 #define TARGET_OS_CPP_BUILTINS()                        \
  33 do {                                                    \
  34         builtin_assert("system=hpux");                  \
  35         builtin_assert("system=posix");                 \
  36         builtin_assert("system=unix");                  \
  37         builtin_define_std("hpux");                     \
  38         builtin_define_std("unix");                     \
  39         builtin_define("__IA64__");                     \
  40         builtin_define("_LONGLONG");                    \
  41         builtin_define("_UINT128_T");                   \
  42         builtin_define("__fpreg=long double");          \
  43         builtin_define("__float80=long double");        \
  44         builtin_define("__float128=long double");       \
  45         if (c_language == clk_cplusplus || !flag_iso)   \
  46           {                                             \
  47             builtin_define("_HPUX_SOURCE");             \
  48             builtin_define("__STDC_EXT__");             \
  49           }                                             \
  50 } while (0)
  51
  52 #undef  ASM_EXTRA_SPEC
  53 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
  54
  55 #undef ENDFILE_SPEC
  56
  57 #undef STARTFILE_SPEC
  58 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s}}"
  59
  60 #ifndef CROSS_COMPILE
  61 #define STARTFILE_PREFIX_SPEC \
  62   "%{mlp64: /usr/ccs/lib/hpux64/} \
  63    %{!mlp64: /usr/ccs/lib/hpux32/}"
  64 #endif
  65
  66 #undef LINK_SPEC
  67 #define LINK_SPEC \
  68   "+Accept TypeMismatch \
  69    %{shared:-b} \
  70    %{!shared: \
  71      -u main \
  72      %{static:-noshared}}"
  73
  74 #undef  LIB_SPEC
  75 #define LIB_SPEC \
  76   "%{!shared: \
  77      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
  78          %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
  79      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
  80           %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
  81      %{!symbolic:-lc}}"
  82
  83 #ifndef CROSS_COMPILE
  84 #undef LIBGCC_SPEC
  85 #define LIBGCC_SPEC \
  86   "%{shared-libgcc:%{!mlp64:-lgcc_s_hpux32}%{mlp64:-lgcc_s_hpux64} -lgcc} \
  87    %{!shared-libgcc:-lgcc}"
  88 #endif
  89
  90 #undef SUBTARGET_SWITCHES
  91 #define SUBTARGET_SWITCHES \
  92   { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
  93   { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
  94
  95 /* A C expression whose value is zero if pointers that need to be extended
  96    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
  97    greater then zero if they are zero-extended and less then zero if the
  98    ptr_extend instruction should be used.  */
  99
 100 #define POINTERS_EXTEND_UNSIGNED -1
 101
 102 #define JMP_BUF_SIZE  (8 * 76)
 103
 104 #undef TARGET_DEFAULT
 105 #define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
 106
 107 /* This needs to be set to force structure arguments with a single
 108    field to be treated as structures and not as the type of their
 109    field.  Without this a structure with a single char will be
 110    returned just like a char variable and that is wrong on HP-UX
 111    IA64.  */
 112
 113 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) (TREE_CODE (TREE_TYPE (FIELD)) != REAL_TYPE || (MODE == TFmode && !INTEL_EXTENDED_IEEE_FORMAT))
 114
 115 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 116    but that doesn't put out the @function type information which causes
 117    shared library problems.  */
 118
 119 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 120 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 121 do {                                                            \
 122   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 123   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 124 } while (0)
 125
 126 #undef FUNCTION_ARG_PADDING
 127 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
 128         ia64_hpux_function_arg_padding ((MODE), (TYPE))
 129
 130 #undef PAD_VARARGS_DOWN
 131 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 132
 133 #define REGISTER_TARGET_PRAGMAS() \
 134   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 135
 136 /* Tell ia64.c that we are using the HP linker and we should delay output of
 137    function extern declarations so that we don't output them for functions
 138    which are never used (and may not be defined).  */
 139
 140 #undef TARGET_HPUX_LD
 141 #define TARGET_HPUX_LD  1
 142
 143 /* Put out the needed function declarations at the end.  */
 144
 145 #define ASM_FILE_END(STREAM) ia64_hpux_asm_file_end(STREAM)
 146
 147 #undef CTORS_SECTION_ASM_OP
 148 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 149
 150 #undef DTORS_SECTION_ASM_OP
 151 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 152
 153 #undef READONLY_DATA_SECTION_ASM_OP
 154 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 155
 156 #undef DATA_SECTION_ASM_OP
 157 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 158
 159 #undef SDATA_SECTION_ASM_OP
 160 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 161
 162 #undef BSS_SECTION_ASM_OP
 163 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 164
 165 #undef SBSS_SECTION_ASM_OP
 166 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 167
 168 #undef TEXT_SECTION_ASM_OP
 169 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 170
 171 /* It is illegal to have relocations in shared segments on HPUX.
 172    Pretend flag_pic is always set.  */
 173 #undef  TARGET_ASM_SELECT_SECTION
 174 #define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
 175 #undef  TARGET_ASM_UNIQUE_SECTION
 176 #define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
 177 #undef  TARGET_ASM_SELECT_RTX_SECTION
 178 #define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
 179 #undef  TARGET_SECTION_TYPE_FLAGS
 180 #define TARGET_SECTION_TYPE_FLAGS  ia64_rwreloc_section_type_flags