Open64: osprey/kg++fe/gnu/config/ia64/hpux.h Source File

00001 /* Definitions of target machine GNU compiler.  IA-64 version.
00002    Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
00003    Contributed by Steve Ellcey <sje@cup.hp.com> and
00004                   Reva Cuthbertson <reva@cup.hp.com>
00005 
00006 This file is part of GNU CC.
00007 
00008 GNU CC is free software; you can redistribute it and/or modify
00009 it under the terms of the GNU General Public License as published by
00010 the Free Software Foundation; either version 2, or (at your option)
00011 any later version.
00012 
00013 GNU CC is distributed in the hope that it will be useful,
00014 but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016 GNU General Public License for more details.
00017 
00018 You should have received a copy of the GNU General Public License
00019 along with GNU CC; see the file COPYING.  If not, write to
00020 the Free Software Foundation, 59 Temple Place - Suite 330,
00021 Boston, MA 02111-1307, USA.  */
00022 
00023 /* This macro is a C statement to print on `stderr' a string describing the
00024    particular machine description choice.  */
00025 
00026 #define TARGET_VERSION fprintf (stderr, " (IA-64) HP-UX");
00027 
00028 /* Target OS builtins.  */
00029 /* -D__fpreg=long double is needed to compensate for
00030    the lack of __fpreg which is a primative type in
00031    HP C but does not exist in GNU C.  */
00032 #define TARGET_OS_CPP_BUILTINS()      \
00033 do {              \
00034   builtin_assert("system=hpux");      \
00035   builtin_assert("system=posix");     \
00036   builtin_assert("system=unix");      \
00037   builtin_define_std("hpux");     \
00038   builtin_define_std("unix");     \
00039   builtin_define("__IA64__");     \
00040   builtin_define("_LONGLONG");      \
00041   builtin_define("_UINT128_T");     \
00042   builtin_define("__fpreg=long double");    \
00043   builtin_define("__float80=long double");  \
00044   builtin_define("__float128=long double"); \
00045   if (c_language == clk_cplusplus || !flag_iso) \
00046     {           \
00047       builtin_define("_HPUX_SOURCE");   \
00048       builtin_define("__STDC_EXT__");   \
00049     }           \
00050 } while (0)
00051 
00052 #undef  ASM_EXTRA_SPEC
00053 #define ASM_EXTRA_SPEC "%{milp32:-milp32} %{mlp64:-mlp64}"
00054 
00055 #undef ENDFILE_SPEC
00056 
00057 #undef STARTFILE_SPEC
00058 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s}}"
00059 
00060 #undef LINK_SPEC
00061 #define LINK_SPEC \
00062   "+Accept TypeMismatch \
00063    %{shared:-b} \
00064    %{!shared: \
00065      -u main \
00066      %{static:-noshared}}"
00067 
00068 #undef  LIB_SPEC
00069 #define LIB_SPEC \
00070   "%{!shared: \
00071      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
00072    %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
00073      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
00074     %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
00075      %{!symbolic:-lc}}"
00076 
00077 #ifndef CROSS_COMPILE
00078 #undef LIBGCC_SPEC
00079 #define LIBGCC_SPEC \
00080   "%{shared-libgcc:%{!mlp64:-lgcc_s_hpux32}%{mlp64:-lgcc_s_hpux64} -lgcc} \
00081    %{!shared-libgcc:-lgcc}"
00082 #endif
00083 
00084 #undef SUBTARGET_SWITCHES
00085 #define SUBTARGET_SWITCHES \
00086   { "ilp32",    MASK_ILP32,     "Generate ILP32 code" }, \
00087   { "lp64",    -MASK_ILP32,     "Generate LP64 code" },
00088 
00089 /* A C expression whose value is zero if pointers that need to be extended
00090    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
00091    greater then zero if they are zero-extended and less then zero if the
00092    ptr_extend instruction should be used.  */
00093 
00094 #define POINTERS_EXTEND_UNSIGNED -1
00095 
00096 #define JMP_BUF_SIZE  (8 * 76)
00097 
00098 #undef TARGET_DEFAULT
00099 #define TARGET_DEFAULT (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
00100 
00101 /* This needs to be set to force structure arguments with a single
00102    field to be treated as structures and not as the type of their
00103    field.  Without this a structure with a single char will be
00104    returned just like a char variable and that is wrong on HP-UX
00105    IA64.  */
00106 
00107 #define MEMBER_TYPE_FORCES_BLK(FIELD, MODE) (TREE_CODE (TREE_TYPE (FIELD)) != REAL_TYPE || (MODE == TFmode && !INTEL_EXTENDED_IEEE_FORMAT))
00108 
00109 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
00110    but that doesn't put out the @function type information which causes
00111    shared library problems.  */
00112 
00113 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
00114 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)      \
00115 do {                \
00116   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0)); \
00117   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
00118 } while (0)
00119 
00120 #undef FUNCTION_ARG_PADDING
00121 #define FUNCTION_ARG_PADDING(MODE, TYPE) \
00122   ia64_hpux_function_arg_padding ((MODE), (TYPE))
00123 
00124 #undef PAD_VARARGS_DOWN
00125 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
00126 
00127 #define REGISTER_TARGET_PRAGMAS(PFILE) \
00128   cpp_register_pragma (PFILE, 0, "builtin", ia64_hpux_handle_builtin_pragma)
00129 
00130 /* Tell ia64.c that we are using the HP linker and we should delay output of
00131    function extern declarations so that we don't output them for functions
00132    which are never used (and may not be defined).  */
00133 
00134 #undef TARGET_HPUX_LD
00135 #define TARGET_HPUX_LD  1
00136 
00137 /* Put out the needed function declarations at the end.  */
00138 
00139 #define ASM_FILE_END(STREAM) ia64_hpux_asm_file_end(STREAM)
00140 
00141 #undef CTORS_SECTION_ASM_OP
00142 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
00143 
00144 #undef DTORS_SECTION_ASM_OP
00145 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
00146 
00147 #undef READONLY_DATA_SECTION_ASM_OP
00148 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
00149 
00150 #undef DATA_SECTION_ASM_OP
00151 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
00152 
00153 #undef SDATA_SECTION_ASM_OP
00154 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
00155 
00156 #undef BSS_SECTION_ASM_OP
00157 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
00158 
00159 #undef SBSS_SECTION_ASM_OP
00160 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
00161 
00162 #undef TEXT_SECTION_ASM_OP
00163 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
00164 
00165 /* It is illegal to have relocations in shared segments on HPUX.
00166    Pretend flag_pic is always set.  */
00167 #undef  TARGET_ASM_SELECT_SECTION
00168 #define TARGET_ASM_SELECT_SECTION  ia64_rwreloc_select_section
00169 #undef  TARGET_ASM_UNIQUE_SECTION
00170 #define TARGET_ASM_UNIQUE_SECTION  ia64_rwreloc_unique_section
00171 #undef  TARGET_ASM_SELECT_RTX_SECTION
00172 #define TARGET_ASM_SELECT_RTX_SECTION  ia64_rwreloc_select_rtx_section
00173 #undef  TARGET_SECTION_TYPE_FLAGS
00174 #define TARGET_SECTION_TYPE_FLAGS  ia64_rwreloc_section_type_flags