diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-02 05:55:55 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-02 16:32:35 -0400 |
commit | 4baa9922430662431231ac637adedddbb0cfb2d7 (patch) | |
tree | e8fb765ce3e41c01f33de34a0bc9494f0ae19818 /arch/arm/include/asm/ucontext.h | |
parent | ff4db0a043a5dee7180bdffd178e61cd02812c68 (diff) |
[ARM] move include/asm-arm to arch/arm/include/asm
Move platform independent header files to arch/arm/include/asm, leaving
those in asm/arch* and asm/plat* alone.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/ucontext.h')
-rw-r--r-- | arch/arm/include/asm/ucontext.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/arm/include/asm/ucontext.h b/arch/arm/include/asm/ucontext.h new file mode 100644 index 000000000000..bf65e9f4525d --- /dev/null +++ b/arch/arm/include/asm/ucontext.h | |||
@@ -0,0 +1,103 @@ | |||
1 | #ifndef _ASMARM_UCONTEXT_H | ||
2 | #define _ASMARM_UCONTEXT_H | ||
3 | |||
4 | #include <asm/fpstate.h> | ||
5 | |||
6 | /* | ||
7 | * struct sigcontext only has room for the basic registers, but struct | ||
8 | * ucontext now has room for all registers which need to be saved and | ||
9 | * restored. Coprocessor registers are stored in uc_regspace. Each | ||
10 | * coprocessor's saved state should start with a documented 32-bit magic | ||
11 | * number, followed by a 32-bit word giving the coproccesor's saved size. | ||
12 | * uc_regspace may be expanded if necessary, although this takes some | ||
13 | * coordination with glibc. | ||
14 | */ | ||
15 | |||
16 | struct ucontext { | ||
17 | unsigned long uc_flags; | ||
18 | struct ucontext *uc_link; | ||
19 | stack_t uc_stack; | ||
20 | struct sigcontext uc_mcontext; | ||
21 | sigset_t uc_sigmask; | ||
22 | /* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */ | ||
23 | int __unused[32 - (sizeof (sigset_t) / sizeof (int))]; | ||
24 | /* Last for extensibility. Eight byte aligned because some | ||
25 | coprocessors require eight byte alignment. */ | ||
26 | unsigned long uc_regspace[128] __attribute__((__aligned__(8))); | ||
27 | }; | ||
28 | |||
29 | #ifdef __KERNEL__ | ||
30 | |||
31 | /* | ||
32 | * Coprocessor save state. The magic values and specific | ||
33 | * coprocessor's layouts are part of the userspace ABI. Each one of | ||
34 | * these should be a multiple of eight bytes and aligned to eight | ||
35 | * bytes, to prevent unpredictable padding in the signal frame. | ||
36 | */ | ||
37 | |||
38 | #ifdef CONFIG_CRUNCH | ||
39 | #define CRUNCH_MAGIC 0x5065cf03 | ||
40 | #define CRUNCH_STORAGE_SIZE (CRUNCH_SIZE + 8) | ||
41 | |||
42 | struct crunch_sigframe { | ||
43 | unsigned long magic; | ||
44 | unsigned long size; | ||
45 | struct crunch_state storage; | ||
46 | } __attribute__((__aligned__(8))); | ||
47 | #endif | ||
48 | |||
49 | #ifdef CONFIG_IWMMXT | ||
50 | /* iwmmxt_area is 0x98 bytes long, preceeded by 8 bytes of signature */ | ||
51 | #define IWMMXT_MAGIC 0x12ef842a | ||
52 | #define IWMMXT_STORAGE_SIZE (IWMMXT_SIZE + 8) | ||
53 | |||
54 | struct iwmmxt_sigframe { | ||
55 | unsigned long magic; | ||
56 | unsigned long size; | ||
57 | struct iwmmxt_struct storage; | ||
58 | } __attribute__((__aligned__(8))); | ||
59 | #endif /* CONFIG_IWMMXT */ | ||
60 | |||
61 | #ifdef CONFIG_VFP | ||
62 | #if __LINUX_ARM_ARCH__ < 6 | ||
63 | /* For ARM pre-v6, we use fstmiax and fldmiax. This adds one extra | ||
64 | * word after the registers, and a word of padding at the end for | ||
65 | * alignment. */ | ||
66 | #define VFP_MAGIC 0x56465001 | ||
67 | #define VFP_STORAGE_SIZE 152 | ||
68 | #else | ||
69 | #define VFP_MAGIC 0x56465002 | ||
70 | #define VFP_STORAGE_SIZE 144 | ||
71 | #endif | ||
72 | |||
73 | struct vfp_sigframe | ||
74 | { | ||
75 | unsigned long magic; | ||
76 | unsigned long size; | ||
77 | union vfp_state storage; | ||
78 | }; | ||
79 | #endif /* CONFIG_VFP */ | ||
80 | |||
81 | /* | ||
82 | * Auxiliary signal frame. This saves stuff like FP state. | ||
83 | * The layout of this structure is not part of the user ABI, | ||
84 | * because the config options aren't. uc_regspace is really | ||
85 | * one of these. | ||
86 | */ | ||
87 | struct aux_sigframe { | ||
88 | #ifdef CONFIG_CRUNCH | ||
89 | struct crunch_sigframe crunch; | ||
90 | #endif | ||
91 | #ifdef CONFIG_IWMMXT | ||
92 | struct iwmmxt_sigframe iwmmxt; | ||
93 | #endif | ||
94 | #if 0 && defined CONFIG_VFP /* Not yet saved. */ | ||
95 | struct vfp_sigframe vfp; | ||
96 | #endif | ||
97 | /* Something that isn't a valid magic number for any coprocessor. */ | ||
98 | unsigned long end_magic; | ||
99 | } __attribute__((__aligned__(8))); | ||
100 | |||
101 | #endif | ||
102 | |||
103 | #endif /* !_ASMARM_UCONTEXT_H */ | ||