1 /* Configuration file for ARM BPABI targets. 2 Copyright (C) 2004, 2005 3 Free Software Foundation, Inc. 4 Contributed by CodeSourcery, LLC 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 2, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING. If not, write to 20 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 21 Boston, MA 02110-1301, USA. */ 22 23 /* Use the AAPCS ABI by default. */ 24 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS 25 26 /* Assume that AAPCS ABIs should adhere to the full BPABI. */ 27 #define TARGET_BPABI (TARGET_AAPCS_BASED) 28 29 /* BPABI targets use EABI frame unwinding tables. */ 30 #define TARGET_UNWIND_INFO 1 31 32 /* Section 4.1 of the AAPCS requires the use of VFP format. */ 33 #undef FPUTYPE_DEFAULT 34 #define FPUTYPE_DEFAULT FPUTYPE_VFP 35 36 /* EABI targets should enable interworking by default. */ 37 #undef TARGET_DEFAULT 38 #define TARGET_DEFAULT MASK_INTERWORK 39 40 /* The ARM BPABI functions return a boolean; they use no special 41 calling convention. */ 42 #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) TARGET_BPABI 43 44 /* The BPABI integer comparison routines return { -1, 0, 1 }. */ 45 #define TARGET_LIB_INT_CMP_BIASED !TARGET_BPABI 46 47 /* Tell the assembler to build BPABI binaries. */ 48 #undef SUBTARGET_EXTRA_ASM_SPEC 49 #define SUBTARGET_EXTRA_ASM_SPEC "%{mabi=apcs-gnu|mabi=atpcs:-meabi=gnu;:-meabi=4}" 50 51 /* The generic link spec in elf.h does not support shared libraries. */ 52 #undef LINK_SPEC 53 #define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} " \ 54 "%{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic} " \ 55 "-X" 56 57 #if defined (__thumb__) 58 #define RENAME_LIBRARY_SET ".thumb_set" 59 #else 60 #define RENAME_LIBRARY_SET ".set" 61 #endif 62 63 /* Make __aeabi_AEABI_NAME an alias for __GCC_NAME. */ 64 #define RENAME_LIBRARY(GCC_NAME, AEABI_NAME) \ 65 __asm__ (".globl\t__aeabi_" #AEABI_NAME "\n" \ 66 RENAME_LIBRARY_SET "\t__aeabi_" #AEABI_NAME \ 67 ", __" #GCC_NAME "\n"); 68 69 /* Give some libgcc functions an additional __aeabi name. */ 70 #ifdef L_muldi3 71 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, lmul) 72 #endif 73 #ifdef L_muldi3 74 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (muldi3, lmul) 75 #endif 76 #ifdef L_fixdfdi 77 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixdfdi, d2lz) 78 #endif 79 #ifdef L_fixunsdfdi 80 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunsdfdi, d2ulz) 81 #endif 82 #ifdef L_fixsfdi 83 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixsfdi, f2lz) 84 #endif 85 #ifdef L_fixunssfdi 86 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (fixunssfdi, f2ulz) 87 #endif 88 #ifdef L_floatdidf 89 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdidf, l2d) 90 #endif 91 #ifdef L_floatdisf 92 #define DECLARE_LIBRARY_RENAMES RENAME_LIBRARY (floatdisf, l2f) 93 #endif 94 95 /* The BPABI requires that we always use an out-of-line implementation 96 of RTTI comparison, even if the target supports weak symbols, 97 because the same object file might be used on a target that does 98 not support merging symbols across DLL boundaries. This macro is 99 broken out separately so that it can be used within 100 TARGET_OS_CPP_BUILTINS in configuration files for systems based on 101 the BPABI. */ 102 #define TARGET_BPABI_CPP_BUILTINS() \ 103 do \ 104 { \ 105 builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \ 106 } \ 107 while (false) 108 109 #undef TARGET_OS_CPP_BUILTINS 110 #define TARGET_OS_CPP_BUILTINS() \ 111 TARGET_BPABI_CPP_BUILTINS() 112 113 /* The BPABI specifies the use of .{init,fini}_array. Therefore, we 114 do not want GCC to put anything into the .{init,fini} sections. */ 115 #undef INIT_SECTION_ASM_OP 116 #undef FINI_SECTION_ASM_OP 117 #define INIT_ARRAY_SECTION_ASM_OP ARM_EABI_CTORS_SECTION_OP 118 #define FINI_ARRAY_SECTION_ASM_OP ARM_EABI_DTORS_SECTION_OP 119