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comparison gcc/config/arm/linux-eabi.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 77e2b8dfacca
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-1:000000000000 0:a06113de4d67
1 /* Configuration file for ARM GNU/Linux EABI targets.
2 Copyright (C) 2004, 2005, 2006, 2007
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 3, 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 COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 /* On EABI GNU/Linux, we want both the BPABI builtins and the
23 GNU/Linux builtins. */
24 #undef TARGET_OS_CPP_BUILTINS
25 #define TARGET_OS_CPP_BUILTINS() \
26 do \
27 { \
28 TARGET_BPABI_CPP_BUILTINS(); \
29 LINUX_TARGET_OS_CPP_BUILTINS(); \
30 } \
31 while (false)
32
33 /* We default to a soft-float ABI so that binaries can run on all
34 target hardware. */
35 #undef TARGET_DEFAULT_FLOAT_ABI
36 #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_SOFT
37
38 /* We default to the "aapcs-linux" ABI so that enums are int-sized by
39 default. */
40 #undef ARM_DEFAULT_ABI
41 #define ARM_DEFAULT_ABI ARM_ABI_AAPCS_LINUX
42
43 /* Default to armv5t so that thumb shared libraries work.
44 The ARM10TDMI core is the default for armv5t, so set
45 SUBTARGET_CPU_DEFAULT to achieve this. */
46 #undef SUBTARGET_CPU_DEFAULT
47 #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm10tdmi
48
49 /* TARGET_BIG_ENDIAN_DEFAULT is set in
50 config.gcc for big endian configurations. */
51 #undef TARGET_LINKER_EMULATION
52 #if TARGET_BIG_ENDIAN_DEFAULT
53 #define TARGET_LINKER_EMULATION "armelfb_linux_eabi"
54 #else
55 #define TARGET_LINKER_EMULATION "armelf_linux_eabi"
56 #endif
57
58 #undef SUBTARGET_EXTRA_LINK_SPEC
59 #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION
60
61 /* Use ld-linux.so.3 so that it will be possible to run "classic"
62 GNU/Linux binaries on an EABI system. */
63 #undef GLIBC_DYNAMIC_LINKER
64 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
65
66 /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
67 use the GNU/Linux version, not the generic BPABI version. */
68 #undef LINK_SPEC
69 #define LINK_SPEC LINUX_TARGET_LINK_SPEC
70
71 /* Use the default LIBGCC_SPEC, not the version in linux-elf.h, as we
72 do not use -lfloat. */
73 #undef LIBGCC_SPEC
74
75 /* Clear the instruction cache from `beg' to `end'. This makes an
76 inline system call to SYS_cacheflush. */
77 #undef CLEAR_INSN_CACHE
78 #define CLEAR_INSN_CACHE(BEG, END) \
79 { \
80 register unsigned long _beg __asm ("a1") = (unsigned long) (BEG); \
81 register unsigned long _end __asm ("a2") = (unsigned long) (END); \
82 register unsigned long _flg __asm ("a3") = 0; \
83 register unsigned long _scno __asm ("r7") = 0xf0002; \
84 __asm __volatile ("swi 0 @ sys_cacheflush" \
85 : "=r" (_beg) \
86 : "0" (_beg), "r" (_end), "r" (_flg), "r" (_scno)); \
87 }