gcc/config/arm/netbsd-eabi.h

   1 /* Definitions of target machine for GNU compiler, NetBSD/arm ELF version.
   2    Copyright (C) 2002-2022 Free Software Foundation, Inc.
   3    Contributed by Wasabi Systems, Inc.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 /* Run-time Target Specification.  */
  22 #undef MULTILIB_DEFAULTS
  23 #define MULTILIB_DEFAULTS { "mabi=aapcs-linux" }
  24
  25 #define TARGET_LINKER_EABI_SUFFIX_SOFT \
  26   "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=hard:_eabihf;:_eabi}}}"
  27 #define TARGET_LINKER_EABI_SUFFIX_HARD \
  28   "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=soft:_eabi;:_eabihf}}}"
  29
  30 #define TARGET_LINKER_EABI_SUFFIX                       \
  31   (TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT       \
  32    ? TARGET_LINKER_EABI_SUFFIX_SOFT                     \
  33    : TARGET_LINKER_EABI_SUFFIX_HARD)
  34
  35 #define TARGET_LINKER_BIG_EMULATION "armelfb_nbsd%(linker_eabi_suffix)"
  36 #define TARGET_LINKER_LITTLE_EMULATION "armelf_nbsd%(linker_eabi_suffix)"
  37
  38 /* TARGET_BIG_ENDIAN_DEFAULT is set in
  39    config.gcc for big endian configurations.  */
  40 #undef  TARGET_LINKER_EMULATION
  41 #if TARGET_BIG_ENDIAN_DEFAULT
  42 #define TARGET_LINKER_EMULATION TARGET_LINKER_BIG_EMULATION
  43 #else
  44 #define TARGET_LINKER_EMULATION TARGET_LINKER_LITTLE_EMULATION
  45 #endif
  46
  47 #undef ARM_DEFAULT_ABI
  48 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
  49
  50 #undef ARM_UNWIND_INFO
  51 #define ARM_UNWIND_INFO 0
  52 #undef DWARF2_UNWIND_INFO
  53 #define DWARF2_UNWIND_INFO 1
  54
  55 #undef TARGET_OS_CPP_BUILTINS
  56 #define TARGET_OS_CPP_BUILTINS()                \
  57   do                                            \
  58     {                                           \
  59       if (TARGET_AAPCS_BASED)                   \
  60         TARGET_BPABI_CPP_BUILTINS();            \
  61       NETBSD_OS_CPP_BUILTINS_ELF();             \
  62       if (DWARF2_UNWIND_INFO)                   \
  63         builtin_define ("__ARM_DWARF_EH__");    \
  64     }                                           \
  65   while (0)
  66
  67 #undef SUBTARGET_CPP_SPEC
  68 #define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC
  69
  70 /*
  71  * Override AAPCS types to remain compatible the existing NetBSD types.
  72  */
  73 #undef WCHAR_TYPE
  74 #define WCHAR_TYPE "int"
  75
  76 #undef SIZE_TYPE
  77 #define SIZE_TYPE "long unsigned int"
  78
  79 #undef PTRDIFF_TYPE
  80 #define PTRDIFF_TYPE "long int"
  81
  82 #undef SUBTARGET_EXTRA_ASM_SPEC
  83 #define SUBTARGET_EXTRA_ASM_SPEC                \
  84   "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} "     \
  85   "%{fpic|fpie:-k} "                            \
  86   "%{fPIC|fPIE:-k}"
  87
  88 #undef SUBTARGET_EXTRA_SPECS
  89 #define SUBTARGET_EXTRA_SPECS                                           \
  90   { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC },             \
  91   { "linker_eabi_suffix",       TARGET_LINKER_EABI_SUFFIX },            \
  92   { "linker_emulation",         TARGET_LINKER_EMULATION },              \
  93   { "linker_big_emulation",     TARGET_LINKER_BIG_EMULATION },          \
  94   { "linker_little_emulation",  TARGET_LINKER_LITTLE_EMULATION },       \
  95   { "target_fix_v4bx_spec",     TARGET_FIX_V4BX_SPEC },                 \
  96   NETBSD_SUBTARGET_EXTRA_SPECS
  97
  98 #define NETBSD_ENTRY_POINT "__start"
  99
 100 #undef LINK_SPEC
 101 #define LINK_SPEC                                               \
 102   "-X %{mbig-endian:-EB -m %(linker_big_emulation)} "           \
 103   "%{mlittle-endian:-EL -m %(linker_liitle_emulation)} "        \
 104   "%{!mbig-endian:%{!mlittle-endian:-m %(linker_emulation)}} "  \
 105   "%(target_fix_v4bx_spec) %(netbsd_link_spec)"