gcc/config/ia64/hpux.h

   1 /* Definitions of target machine GNU compiler.  IA-64 version.
   2    Copyright (C) 1999-2020 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 GCC.
   7
   8 GCC 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 3, or (at your option)
  11 any later version.
  12
  13 GCC 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 GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 /* Enable HPUX ABI quirks.  */
  23 #undef  TARGET_HPUX
  24 #define TARGET_HPUX 1
  25
  26 #undef WCHAR_TYPE
  27 #define WCHAR_TYPE "unsigned int"
  28
  29 #undef WCHAR_TYPE_SIZE
  30 #define WCHAR_TYPE_SIZE 32
  31
  32 /* Target OS builtins.  */
  33 #define TARGET_OS_CPP_BUILTINS()                        \
  34 do {                                                    \
  35         builtin_assert("system=hpux");                  \
  36         builtin_assert("system=posix");                 \
  37         builtin_assert("system=unix");                  \
  38         builtin_define_std("hpux");                     \
  39         builtin_define_std("unix");                     \
  40         builtin_define("__IA64__");                     \
  41         builtin_define("_LONGLONG");                    \
  42         builtin_define("_INCLUDE_LONGLONG");            \
  43         builtin_define("__STDC_EXT__");                 \
  44         builtin_define("_UINT128_T");                   \
  45         if (c_dialect_cxx () || !flag_iso)              \
  46           {                                             \
  47             builtin_define("_HPUX_SOURCE");             \
  48             builtin_define("__STDCPP__");               \
  49             builtin_define("_INCLUDE__STDC_A1_SOURCE"); \
  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 #ifndef USE_GAS
  66 #define AS_NEEDS_DASH_FOR_PIPED_INPUT
  67 #endif
  68
  69 #ifndef CROSS_DIRECTORY_STRUCTURE
  70 #undef MD_EXEC_PREFIX
  71 #define MD_EXEC_PREFIX "/usr/ccs/bin/"
  72
  73 #undef MD_STARTFILE_PREFIX
  74 #define MD_STARTFILE_PREFIX "/usr/ccs/lib/"
  75 #endif
  76
  77 #undef ENDFILE_SPEC
  78
  79 #undef STARTFILE_SPEC
  80 #define STARTFILE_SPEC "%{!shared:%{static:crt0%O%s} \
  81                           %{mlp64:/usr/lib/hpux64/unix98%O%s} \
  82                           %{!mlp64:/usr/lib/hpux32/unix98%O%s}}"
  83
  84 #undef LINK_SPEC
  85 #define LINK_SPEC \
  86   "-z +Accept TypeMismatch \
  87    %{shared:-b} \
  88    %{!shared: \
  89      -u main \
  90      %{static:-noshared}}"
  91
  92 #undef  LIB_SPEC
  93 #define LIB_SPEC \
  94   "%{!shared: \
  95      %{mt|pthread:%{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):-lrt} -lpthread} \
  96      %{p:%{!mlp64:-L/usr/lib/hpux32/libp} \
  97          %{mlp64:-L/usr/lib/hpux64/libp} -lprof} \
  98      %{pg:%{!mlp64:-L/usr/lib/hpux32/libp} \
  99           %{mlp64:-L/usr/lib/hpux64/libp} -lgprof} \
 100      %{!symbolic:-lc}}"
 101
 102 #define MULTILIB_DEFAULTS { "milp32" }
 103
 104 /* A C expression whose value is zero if pointers that need to be extended
 105    from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
 106    greater then zero if they are zero-extended and less then zero if the
 107    ptr_extend instruction should be used.  */
 108
 109 #define POINTERS_EXTEND_UNSIGNED -1
 110
 111 #define JMP_BUF_SIZE  (8 * 76)
 112
 113 #undef TARGET_DEFAULT
 114 #define TARGET_DEFAULT \
 115   (MASK_DWARF2_ASM | MASK_BIG_ENDIAN | MASK_ILP32)
 116
 117 /* ASM_OUTPUT_EXTERNAL_LIBCALL defaults to just a globalize_label call,
 118    but that doesn't put out the @function type information which causes
 119    shared library problems.  */
 120
 121 #undef ASM_OUTPUT_EXTERNAL_LIBCALL
 122 #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)                  \
 123 do {                                                            \
 124   (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));     \
 125   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, XSTR (FUN, 0), "function");  \
 126 } while (0)
 127
 128 #undef PAD_VARARGS_DOWN
 129 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))
 130
 131 #define REGISTER_TARGET_PRAGMAS() \
 132   c_register_pragma (0, "builtin", ia64_hpux_handle_builtin_pragma)
 133
 134 /* Tell ia64.c that we are using the HP linker and we should delay output of
 135    function extern declarations so that we don't output them for functions
 136    which are never used (and may not be defined).  */
 137
 138 #undef TARGET_HPUX_LD
 139 #define TARGET_HPUX_LD  1
 140
 141 /* The HPUX dynamic linker objects to weak symbols with no
 142    definitions, so do not use them in gthr-posix.h.  */
 143 #define GTHREAD_USE_WEAK 0
 144
 145 #undef CTORS_SECTION_ASM_OP
 146 #define CTORS_SECTION_ASM_OP  "\t.section\t.init_array,\t\"aw\",\"init_array\""
 147
 148 #undef DTORS_SECTION_ASM_OP
 149 #define DTORS_SECTION_ASM_OP  "\t.section\t.fini_array,\t\"aw\",\"fini_array\""
 150
 151 /* The init_array/fini_array technique does not permit the use of
 152    initialization priorities.  */
 153 #define SUPPORTS_INIT_PRIORITY 0
 154
 155 #undef READONLY_DATA_SECTION_ASM_OP
 156 #define READONLY_DATA_SECTION_ASM_OP "\t.section\t.rodata,\t\"a\",\t\"progbits\""
 157
 158 #undef DATA_SECTION_ASM_OP
 159 #define DATA_SECTION_ASM_OP "\t.section\t.data,\t\"aw\",\t\"progbits\""
 160
 161 #undef SDATA_SECTION_ASM_OP
 162 #define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\t\"asw\",\t\"progbits\""
 163
 164 #undef BSS_SECTION_ASM_OP
 165 #define BSS_SECTION_ASM_OP "\t.section\t.bss,\t\"aw\",\t\"nobits\""
 166
 167 #undef SBSS_SECTION_ASM_OP
 168 #define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\t\"asw\",\t\"nobits\""
 169
 170 #undef TEXT_SECTION_ASM_OP
 171 #define TEXT_SECTION_ASM_OP "\t.section\t.text,\t\"ax\",\t\"progbits\""
 172
 173 /* It is illegal to have relocations in shared segments on HPUX.
 174    Pretend flag_pic is always set.  */
 175 #undef  TARGET_ASM_RELOC_RW_MASK
 176 #define TARGET_ASM_RELOC_RW_MASK  ia64_hpux_reloc_rw_mask
 177
 178 /* ia64 HPUX has the float and long double forms of math functions.
 179    We redefine this hook so the version from elfos.h header won't be used.  */
 180 #undef TARGET_LIBC_HAS_FUNCTION
 181 #define TARGET_LIBC_HAS_FUNCTION default_libc_has_function
 182
 183 #undef TARGET_INIT_LIBFUNCS
 184 #define TARGET_INIT_LIBFUNCS ia64_hpux_init_libfuncs
 185
 186 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode)
 187
 188 /* HP-UX uses PROFILE_HOOK instead of FUNCTION_PROFILER but we need a
 189    FUNCTION_PROFILER defined because its use is not ifdefed.  When using
 190    PROFILE_HOOK, the profile call comes after the prologue.  */
 191
 192 #undef FUNCTION_PROFILER
 193 #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0)
 194
 195 #undef PROFILE_HOOK
 196 #define PROFILE_HOOK(LABEL) ia64_profile_hook (LABEL)
 197
 198 #undef  PROFILE_BEFORE_PROLOGUE
 199
 200 #undef NO_PROFILE_COUNTERS
 201 #define NO_PROFILE_COUNTERS 0
 202
 203 /* The HP-UX linker has a bug that causes calls from functions in
 204    .text.unlikely to functions in .text to cause a segfault.  Until
 205    it is fixed, prevent code from being put into .text.unlikely or
 206    .text.hot.  */
 207
 208 #define TARGET_ASM_FUNCTION_SECTION ia64_hpux_function_section
 209
 210 #define TARGET_POSIX_IO
 211
 212 /* Define this to be nonzero if static stack checking is supported.  */
 213 #define STACK_CHECK_STATIC_BUILTIN 1
 214
 215 /* Minimum amount of stack required to recover from an anticipated stack
 216    overflow detection.  */
 217 #define STACK_CHECK_PROTECT (24 * 1024)