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[official-gcc.git] / gomp-20050608-branch / gcc / config / arm / linux-eabi.h
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1 /* Configuration file for ARM GNU/Linux EABI targets.
2 Copyright (C) 2004, 2005
3 Free Software Foundation, Inc.
4 Contributed by CodeSourcery, LLC
6 This file is part of GCC.
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.
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.
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. */
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)
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
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
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
50 #undef SUBTARGET_EXTRA_LINK_SPEC
51 #define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux_eabi"
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 LINUX_TARGET_INTERPRETER
56 #define LINUX_TARGET_INTERPRETER "/lib/ld-linux.so.3"
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
63 /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
64 do not use -lfloat. */
65 #undef LIBGCC_SPEC
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")
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)); \