1 /* Definitions of target machine for GNU compiler, NetBSD/arm ELF version. 2 Copyright (C) 2002-2020 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 ARM_DWARF_UNWIND_TABLES 53 #define ARM_DWARF_UNWIND_TABLES 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 (ARM_DWARF_UNWIND_TABLES) \ 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 "-matpcs %{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} " \ 85 "%{fpic|fpie:-k} " \ 86 "%{fPIC|fPIE:-k}" 87 88 /* Default to full VFP if -mhard-float is specified. */ 89 #undef SUBTARGET_ASM_FLOAT_SPEC 90 #define SUBTARGET_ASM_FLOAT_SPEC \ 91 "%{mhard-float:%{!mfpu=*:-mfpu=vfp}} \ 92 %{mfloat-abi=hard:%{!mfpu=*:-mfpu=vfp}}" 93 94 #undef SUBTARGET_EXTRA_SPECS 95 #define SUBTARGET_EXTRA_SPECS \ 96 { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \ 97 { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \ 98 { "linker_eabi_suffix", TARGET_LINKER_EABI_SUFFIX }, \ 99 { "linker_emulation", TARGET_LINKER_EMULATION }, \ 100 { "linker_big_emulation", TARGET_LINKER_BIG_EMULATION }, \ 101 { "linker_little_emulation", TARGET_LINKER_LITTLE_EMULATION }, \ 102 { "be8_link_spec", BE8_LINK_SPEC }, \ 103 { "target_fix_v4bx_spec", TARGET_FIX_V4BX_SPEC }, \ 104 NETBSD_SUBTARGET_EXTRA_SPECS 105 106 #define NETBSD_ENTRY_POINT "__start" 107 108 #undef LINK_SPEC 109 #define LINK_SPEC \ 110 "-X %{mbig-endian:-EB -m %(linker_big_emulation)} " \ 111 "%{mlittle-endian:-EL -m %(linker_liitle_emulation)} " \ 112 "%{!mbig-endian:%{!mlittle-endian:-m %(linker_emulation)}} " \ 113 "%(be8_link_spec) " \ 114 "%(target_fix_v4bx_spec) %(netbsd_link_spec)" 115