1/* Configuration file for ARM BPABI targets. 2 Copyright (C) 2004-2015 Free Software Foundation, Inc. 3 Contributed by CodeSourcery, LLC 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 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26/* Use the AAPCS ABI by default. */ 27#define ARM_DEFAULT_ABI ARM_ABI_AAPCS 28 29/* Assume that AAPCS ABIs should adhere to the full BPABI. */ 30#define TARGET_BPABI (TARGET_AAPCS_BASED) 31 32/* BPABI targets use EABI frame unwinding tables. */ 33#undef ARM_UNWIND_INFO 34#define ARM_UNWIND_INFO 1 35 36/* Section 4.1 of the AAPCS requires the use of VFP format. */ 37#undef FPUTYPE_DEFAULT 38#define FPUTYPE_DEFAULT "vfp" 39 40/* TARGET_BIG_ENDIAN_DEFAULT is set in 41 config.gcc for big endian configurations. */ 42#if TARGET_BIG_ENDIAN_DEFAULT 43#define TARGET_ENDIAN_DEFAULT MASK_BIG_END 44#else 45#define TARGET_ENDIAN_DEFAULT 0 46#endif 47 48/* EABI targets should enable interworking by default. */ 49#undef TARGET_DEFAULT 50#define TARGET_DEFAULT (MASK_INTERWORK | TARGET_ENDIAN_DEFAULT) 51 52/* The ARM BPABI functions return a boolean; they use no special 53 calling convention. */ 54#define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) TARGET_BPABI 55 56/* The BPABI integer comparison routines return { -1, 0, 1 }. */ 57#define TARGET_LIB_INT_CMP_BIASED !TARGET_BPABI 58 59#define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*"\ 60 "|march=armv4|mcpu=fa526|mcpu=fa626:--fix-v4bx}" 61 62#if TARGET_BIG_ENDIAN_DEFAULT 63#define BE8_LINK_SPEC \ 64 " %{!mlittle-endian:%{march=armv7-a|mcpu=cortex-a5 \ 65 |mcpu=cortex-a7 \ 66 |mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15 \ 67 |mcpu=cortex-a12|mcpu=cortex-a17 \ 68 |mcpu=cortex-a15.cortex-a7 \ 69 |mcpu=cortex-a17.cortex-a7 \ 70 |mcpu=marvell-pj4 \ 71 |mcpu=cortex-a53 \ 72 |mcpu=cortex-a57 \ 73 |mcpu=cortex-a57.cortex-a53 \ 74 |mcpu=cortex-a72 \ 75 |mcpu=cortex-a72.cortex-a53 \ 76 |mcpu=exynos-m1 \ 77 |mcpu=xgene1 \ 78 |mcpu=cortex-m1.small-multiply \ 79 |mcpu=cortex-m0.small-multiply \ 80 |mcpu=cortex-m0plus.small-multiply \ 81 |mcpu=generic-armv7-a \ 82 |march=armv7ve \ 83 |march=armv7-m|mcpu=cortex-m3 \ 84 |march=armv7e-m|mcpu=cortex-m4|mcpu=cortex-m7 \ 85 |march=armv6-m|mcpu=cortex-m0 \ 86 |march=armv8-a \ 87 :%{!r:--be8}}}" 88#else 89#define BE8_LINK_SPEC \ 90 " %{mbig-endian:%{march=armv7-a|mcpu=cortex-a5 \ 91 |mcpu=cortex-a7 \ 92 |mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15 \ 93 |mcpu=cortex-a12|mcpu=cortex-a17 \ 94 |mcpu=cortex-a15.cortex-a7 \ 95 |mcpu=cortex-a17.cortex-a7 \ 96 |mcpu=cortex-a53 \ 97 |mcpu=cortex-a57 \ 98 |mcpu=cortex-a57.cortex-a53 \ 99 |mcpu=cortex-a72 \ 100 |mcpu=cortex-a72.cortex-a53 \ 101 |mcpu=exynos-m1 \ 102 |mcpu=xgene1 \ 103 |mcpu=cortex-m1.small-multiply \ 104 |mcpu=cortex-m0.small-multiply \ 105 |mcpu=cortex-m0plus.small-multiply \ 106 |mcpu=marvell-pj4 \ 107 |mcpu=generic-armv7-a \ 108 |march=armv7ve \ 109 |march=armv7-m|mcpu=cortex-m3 \ 110 |march=armv7e-m|mcpu=cortex-m4|mcpu=cortex-m7 \ 111 |march=armv6-m|mcpu=cortex-m0 \ 112 |march=armv8-a \ 113 :%{!r:--be8}}}" 114#endif 115 116/* Tell the assembler to build BPABI binaries. */ 117#undef SUBTARGET_EXTRA_ASM_SPEC 118#define SUBTARGET_EXTRA_ASM_SPEC \ 119 "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=5}" TARGET_FIX_V4BX_SPEC 120 121#ifndef SUBTARGET_EXTRA_LINK_SPEC 122#define SUBTARGET_EXTRA_LINK_SPEC "" 123#endif 124 125/* Split out the EABI common values so other targets can use it. */ 126#define EABI_LINK_SPEC \ 127 TARGET_FIX_V4BX_SPEC BE8_LINK_SPEC 128 129/* The generic link spec in elf.h does not support shared libraries. */ 130#define BPABI_LINK_SPEC \ 131 "%{mbig-endian:-EB} %{mlittle-endian:-EL} " \ 132 "%{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic} " \ 133 "-X" SUBTARGET_EXTRA_LINK_SPEC EABI_LINK_SPEC 134 135#undef LINK_SPEC 136#define LINK_SPEC BPABI_LINK_SPEC 137 138/* The BPABI requires that we always use an out-of-line implementation 139 of RTTI comparison, even if the target supports weak symbols, 140 because the same object file might be used on a target that does 141 not support merging symbols across DLL boundaries. This macro is 142 broken out separately so that it can be used within 143 TARGET_OS_CPP_BUILTINS in configuration files for systems based on 144 the BPABI. */ 145#define TARGET_BPABI_CPP_BUILTINS() \ 146 do \ 147 { \ 148 builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \ 149 } \ 150 while (false) 151 152#undef TARGET_OS_CPP_BUILTINS 153#define TARGET_OS_CPP_BUILTINS() \ 154 TARGET_BPABI_CPP_BUILTINS() 155 156/* The BPABI specifies the use of .{init,fini}_array. Therefore, we 157 do not want GCC to put anything into the .{init,fini} sections. */ 158#undef INIT_SECTION_ASM_OP 159#undef FINI_SECTION_ASM_OP 160#define INIT_ARRAY_SECTION_ASM_OP ARM_EABI_CTORS_SECTION_OP 161#define FINI_ARRAY_SECTION_ASM_OP ARM_EABI_DTORS_SECTION_OP 162 163/* The legacy _mcount implementation assumes r11 points to a 164 4-word APCS frame. This is generally not true for EABI targets, 165 particularly not in Thumb mode. We assume the mcount 166 implementation does not require a counter variable (No Counter). 167 Note that __gnu_mcount_nc will be entered with a misaligned stack. 168 This is OK because it uses a special calling convention anyway. */ 169 170#undef NO_PROFILE_COUNTERS 171#define NO_PROFILE_COUNTERS 1 172#undef ARM_FUNCTION_PROFILER 173#define ARM_FUNCTION_PROFILER(STREAM, LABELNO) \ 174{ \ 175 fprintf (STREAM, "\tpush\t{lr}\n"); \ 176 fprintf (STREAM, "\tbl\t__gnu_mcount_nc\n"); \ 177} 178 179#undef SUBTARGET_FRAME_POINTER_REQUIRED 180#define SUBTARGET_FRAME_POINTER_REQUIRED 0 181 182/* __gnu_mcount_nc restores the original LR value before returning. Ensure 183 that there is no unnecessary hook set up. */ 184#undef PROFILE_HOOK 185