gcc/config/i386/openbsd.h

   1 /* Configuration for an OpenBSD i386 target.
   2    Copyright (C) 1999-2016 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* This goes away when the math-emulator is fixed */
  22 #undef TARGET_SUBTARGET_DEFAULT
  23 #define TARGET_SUBTARGET_DEFAULT \
  24   (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_NO_FANCY_MATH_387)
  25
  26 #define TARGET_OS_CPP_BUILTINS()                \
  27   do                                            \
  28     {                                           \
  29         builtin_define ("__unix__");            \
  30         builtin_define ("__OpenBSD__");         \
  31         builtin_assert ("system=unix");         \
  32         builtin_assert ("system=bsd");          \
  33         builtin_assert ("system=OpenBSD");      \
  34     }                                           \
  35   while (0)
  36
  37 /* Layout of source language data types.  */
  38
  39 /* This must agree with <machine/ansi.h> */
  40 #undef SIZE_TYPE
  41 #define SIZE_TYPE "unsigned int"
  42
  43 #undef PTRDIFF_TYPE
  44 #define PTRDIFF_TYPE "int"
  45
  46 #undef WCHAR_TYPE
  47 #define WCHAR_TYPE "int"
  48
  49 #undef WCHAR_TYPE_SIZE
  50 #define WCHAR_TYPE_SIZE 32
  51
  52 /* Assembler format: overall framework.  */
  53
  54 #undef ASM_APP_ON
  55 #define ASM_APP_ON "#APP\n"
  56
  57 #undef ASM_APP_OFF
  58 #define ASM_APP_OFF "#NO_APP\n"
  59
  60 /* Stack & calling: aggregate returns.  */
  61
  62 /* Don't default to pcc-struct-return, because gcc is the only compiler, and
  63    we want to retain compatibility with older gcc versions.  */
  64 #define DEFAULT_PCC_STRUCT_RETURN 0
  65
  66 /* Assembler format: alignment output.  */
  67
  68 /* Kludgy test: when gas is upgraded, it will have p2align, and no problems
  69    with nops.  */
  70 #ifndef HAVE_GAS_MAX_SKIP_P2ALIGN
  71 /* i386 OpenBSD still uses an older gas that doesn't insert nops by default
  72    when the .align directive demands to insert extra space in the text
  73    segment.  */
  74 #undef ASM_OUTPUT_ALIGN
  75 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
  76   if ((LOG)!=0) fprintf ((FILE), "\t.align %d,0x90\n", (LOG))
  77 #endif
  78
  79 /* Stack & calling: profiling.  */
  80
  81 /* OpenBSD's profiler recovers all information from the stack pointer.
  82    The icky part is not here, but in machine/profile.h.  */
  83 #undef FUNCTION_PROFILER
  84 #define FUNCTION_PROFILER(FILE, LABELNO)  \
  85   fputs (flag_pic ? "\tcall mcount@PLT\n": "\tcall mcount\n", FILE);
  86
  87 /* Assembler format: exception region output.  */
  88
  89 /* All configurations that don't use elf must be explicit about not using
  90    dwarf unwind information.  */
  91 #define DWARF2_UNWIND_INFO 0
  92
  93 #undef ASM_PREFERRED_EH_DATA_FORMAT
  94
  95 #undef ASM_COMMENT_START
  96 #define ASM_COMMENT_START ";#"
  97
  98 /* OpenBSD gas currently does not support quad, so do not use it.  */
  99 #undef ASM_QUAD
 100
 101 #define TARGET_HAVE_NAMED_SECTIONS false