1 /* Definitions of target machine for GNU compiler, NetBSD/arm ELF version. 2 Copyright (C) 2002, 2003, 2004, 2005, 2007 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 TARGET_VERSION 23 #define TARGET_VERSION fputs (" (NetBSD/earm ELF)", stderr); 24 25 #undef MULTILIB_DEFAULTS 26 #define MULTILIB_DEFAULTS { "mabi=aapcs-linux" } 27 28 #undef MUST_USE_SJLJ_EXCEPTIONS 29 #define MUST_USE_SJLJ_EXCEPTIONS (!TARGET_AAPCS_BASED) 30 31 #undef ARM_EABI_UNWIND_TABLES 32 #define ARM_EABI_UNWIND_TABLES \ 33 ((!USING_SJLJ_EXCEPTIONS && flag_exceptions) || flag_unwind_tables) 34 35 #define TARGET_LINKER_EABI_SUFFIX \ 36 (TARGET_DEFAULT_FLOAT_ABI == ARM_FLOAT_ABI_SOFT \ 37 ? "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=hard:_eabihf;:_eabi}}}" \ 38 : "%{!mabi=apcs-gnu:%{!mabi=atpcs:%{mfloat-abi=soft:_eabi;:_eabihf}}}") 39 #define TARGET_LINKER_BIG_EMULATION "armelfb_nbsd%(linker_eabi_suffix)" 40 #define TARGET_LINKER_LITTLE_EMULATION "armelf_nbsd%(linker_eabi_suffix)" 41 42 /* TARGET_BIG_ENDIAN_DEFAULT is set in 43 config.gcc for big endian configurations. */ 44 #undef TARGET_LINKER_EMULATION 45 #if TARGET_BIG_ENDIAN_DEFAULT 46 #define TARGET_LINKER_EMULATION TARGET_LINKER_BIG_EMULATION 47 #undef BE8_LINK_SPEC 48 #define BE8_LINK_SPEC " %{!mlittle-endian:%{march=armv7-a|mcpu=cortex-a5|mcpu=cortex-a8|mcpu=cortex-a9:%{!r:--be8}}}" 49 #else 50 #define TARGET_LINKER_EMULATION TARGET_LINKER_LITTLE_EMULATION 51 #endif 52 53 #undef MULTILIB_DEFAULTS 54 55 #undef ARM_DEFAULT_ABI 56 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX 57 58 #undef TARGET_OS_CPP_BUILTINS 59 #define TARGET_OS_CPP_BUILTINS() \ 60 do \ 61 { \ 62 if (TARGET_AAPCS_BASED) \ 63 TARGET_BPABI_CPP_BUILTINS(); \ 64 NETBSD_OS_CPP_BUILTINS_ELF(); \ 65 if (ARM_EABI_UNWIND_TABLES) \ 66 builtin_define ("__UNWIND_TABLES__"); \ 67 } \ 68 while (0) 69 70 #undef SUBTARGET_CPP_SPEC 71 #define SUBTARGET_CPP_SPEC NETBSD_CPP_SPEC 72 73 /* 74 * Override AAPCS types to remain compatible the existing NetBSD types. 75 */ 76 #undef WCHAR_TYPE 77 #define WCHAR_TYPE "int" 78 79 #undef SIZE_TYPE 80 #define SIZE_TYPE "long unsigned int" 81 82 #undef PTRDIFF_TYPE 83 #define PTRDIFF_TYPE "long int" 84 85 #undef SUBTARGET_EXTRA_ASM_SPEC 86 #define SUBTARGET_EXTRA_ASM_SPEC \ 87 "-matpcs %{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu} %{fpic|fpie:-k} %{fPIC|fPIE:-k}" 88 89 /* Default to full VFP if -mhard-float is specified. */ 90 #undef SUBTARGET_ASM_FLOAT_SPEC 91 #define SUBTARGET_ASM_FLOAT_SPEC \ 92 "%{mhard-float:%{!mfpu=*:-mfpu=vfp}} \ 93 %{mfloat-abi=hard:%{!mfpu=*:-mfpu=vfp}}" 94 95 #undef SUBTARGET_EXTRA_SPECS 96 #define SUBTARGET_EXTRA_SPECS \ 97 { "subtarget_extra_asm_spec", SUBTARGET_EXTRA_ASM_SPEC }, \ 98 { "subtarget_asm_float_spec", SUBTARGET_ASM_FLOAT_SPEC }, \ 99 { "netbsd_link_spec", NETBSD_LINK_SPEC_ELF }, \ 100 { "linker_eabi_suffix", TARGET_LINKER_EABI_SUFFIX }, \ 101 { "linker_emulation", TARGET_LINKER_EMULATION }, \ 102 { "linker_big_emulation", TARGET_LINKER_BIG_EMULATION }, \ 103 { "linker_little_emulation", TARGET_LINKER_LITTLE_EMULATION }, \ 104 { "be8_link_spec", BE8_LINK_SPEC }, \ 105 { "target_fix_v4bx_spec", TARGET_FIX_V4BX_SPEC }, \ 106 { "netbsd_entry_point", NETBSD_ENTRY_POINT }, 107 108 #define NETBSD_ENTRY_POINT "__start" 109 110 #undef LINK_SPEC 111 #define LINK_SPEC \ 112 "-X %{mbig-endian:-EB -m %(linker_big_emulation)} \ 113 %{mlittle-endian:-EL -m %(linker_liitle_emulation)} \ 114 %{!mbig-endian:%{!mlittle-endian:-m %(linker_emulation)}} \ 115 %(be8_link_spec) %(target_fix_v4bx_spec) \ 116 %(netbsd_link_spec)" 117