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yaml --- r: 29623 b: refs/heads/master c: 85fe068 h: refs/heads/master i: 29621: 325e189 29619: c43bc25 29615: 966dbeb v: v3
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Daniel Jacobowitz
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Russell King
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Jun 24, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: ca195cfec9fff622a61b1b72534e73360747f735 | ||
| refs/heads/master: 85fe068123aa11d3477ce88c7d365e233b1f2e10 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,89 @@ | ||
| #ifndef _ASMARM_UCONTEXT_H | ||
| #define _ASMARM_UCONTEXT_H | ||
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| #include <asm/fpstate.h> | ||
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| /* | ||
| * struct sigcontext only has room for the basic registers, but struct | ||
| * ucontext now has room for all registers which need to be saved and | ||
| * restored. Coprocessor registers are stored in uc_regspace. Each | ||
| * coprocessor's saved state should start with a documented 32-bit magic | ||
| * number, followed by a 32-bit word giving the coproccesor's saved size. | ||
| * uc_regspace may be expanded if necessary, although this takes some | ||
| * coordination with glibc. | ||
| */ | ||
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| struct ucontext { | ||
| unsigned long uc_flags; | ||
| struct ucontext *uc_link; | ||
| stack_t uc_stack; | ||
| struct sigcontext uc_mcontext; | ||
| sigset_t uc_sigmask; /* mask last for extensibility */ | ||
| sigset_t uc_sigmask; | ||
| /* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */ | ||
| int __unused[32 - (sizeof (sigset_t) / sizeof (int))]; | ||
| /* Last for extensibility. Eight byte aligned because some | ||
| coprocessors require eight byte alignment. */ | ||
| unsigned long uc_regspace[128] __attribute__((__aligned__(8))); | ||
| }; | ||
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| #ifdef __KERNEL__ | ||
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| /* | ||
| * Coprocessor save state. The magic values and specific | ||
| * coprocessor's layouts are part of the userspace ABI. Each one of | ||
| * these should be a multiple of eight bytes and aligned to eight | ||
| * bytes, to prevent unpredictable padding in the signal frame. | ||
| */ | ||
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| #ifdef CONFIG_IWMMXT | ||
| /* iwmmxt_area is 0x98 bytes long, preceeded by 8 bytes of signature */ | ||
| #define IWMMXT_MAGIC 0x12ef842a | ||
| #define IWMMXT_STORAGE_SIZE (IWMMXT_SIZE + 8) | ||
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| struct iwmmxt_sigframe { | ||
| unsigned long magic; | ||
| unsigned long size; | ||
| struct iwmmxt_struct storage; | ||
| } __attribute__((__aligned__(8))); | ||
| #endif /* CONFIG_IWMMXT */ | ||
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| #ifdef CONFIG_VFP | ||
| #if __LINUX_ARM_ARCH__ < 6 | ||
| /* For ARM pre-v6, we use fstmiax and fldmiax. This adds one extra | ||
| * word after the registers, and a word of padding at the end for | ||
| * alignment. */ | ||
| #define VFP_MAGIC 0x56465001 | ||
| #define VFP_STORAGE_SIZE 152 | ||
| #else | ||
| #define VFP_MAGIC 0x56465002 | ||
| #define VFP_STORAGE_SIZE 144 | ||
| #endif | ||
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| struct vfp_sigframe | ||
| { | ||
| unsigned long magic; | ||
| unsigned long size; | ||
| union vfp_state storage; | ||
| }; | ||
| #endif /* CONFIG_VFP */ | ||
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| /* | ||
| * Auxiliary signal frame. This saves stuff like FP state. | ||
| * The layout of this structure is not part of the user ABI, | ||
| * because the config options aren't. uc_regspace is really | ||
| * one of these. | ||
| */ | ||
| struct aux_sigframe { | ||
| #ifdef CONFIG_IWMMXT | ||
| struct iwmmxt_sigframe iwmmxt; | ||
| #endif | ||
| #if 0 && defined CONFIG_VFP /* Not yet saved. */ | ||
| struct vfp_sigframe vfp; | ||
| #endif | ||
| /* Something that isn't a valid magic number for any coprocessor. */ | ||
| unsigned long end_magic; | ||
| } __attribute__((__aligned__(8))); | ||
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| #endif | ||
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| #endif /* !_ASMARM_UCONTEXT_H */ |