1 /* Configuration file for ARM GNU/Linux EABI targets. 2 Copyright (C) 2004, 2005, 2006 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 /* On EABI GNU/Linux, we want both the BPABI builtins and the 24 GNU/Linux builtins. */ 25 #undef TARGET_OS_CPP_BUILTINS 26 #define TARGET_OS_CPP_BUILTINS() \ 27 do \ 28 { \ 29 TARGET_BPABI_CPP_BUILTINS(); \ 30 LINUX_TARGET_OS_CPP_BUILTINS(); \ 31 } \ 32 while (false) 33 34 /* We default to a soft-float ABI so that binaries can run on all 35 target hardware. */ 36 #undef TARGET_DEFAULT_FLOAT_ABI 37 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT 38 39 /* We default to the "aapcs-linux" ABI so that enums are int-sized by 40 default. */ 41 #undef ARM_DEFAULT_ABI 42 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX 43 44 /* Default to armv5t so that thumb shared libraries work. 45 The ARM10TDMI core is the default for armv5t, so set 46 SUBTARGET_CPU_DEFAULT to achieve this. */ 47 #undef SUBTARGET_CPU_DEFAULT 48 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi 49 50 #undef SUBTARGET_EXTRA_LINK_SPEC 51 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi" 52 53 /* Use ld-linux.so.3 so that it will be possible to run "classic" 54 GNU/Linux binaries on an EABI system. */ 55 #undef GLIBC_DYNAMIC_LINKER 56 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3" 57 58 /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to 59 use the GNU/Linux version, not the generic BPABI version. */ 60 #undef LINK_SPEC 61 #define LINK_SPEC LINUX_TARGET_LINK_SPEC 62 63 /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we 64 do not use -lfloat. */ 65 #undef LIBGCC_SPEC 66 67 /* Use the AAPCS type for wchar_t, or the previous Linux default for 68 non-AAPCS. */ 69 #undef WCHAR_TYPE 70 #define WCHAR_TYPE (TARGET_AAPCS_BASED ? "unsigned int" : "long int") 71 72 /* Clear the instruction cache from `beg' to `end'. This makes an 73 inline system call to SYS_cacheflush. It is modified to work with 74 both the original and EABI-only syscall interfaces. */ 75 #undef CLEAR_INSN_CACHE 76 #define CLEAR_INSN_CACHE(BEG, END) \ 77 { \ 78 register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \ 79 register unsigned long _end __asm ("a2") = (unsigned long) (END); \ 80 register unsigned long _flg __asm ("a3") = 0; \ 81 register unsigned long _scno __asm ("r7") = 0xf0002; \ 82 __asm __volatile ("swi 0x9f0002 @ sys_cacheflush" \ 83 : "=r" (_beg) \ 84 : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \ 85 } 86