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x86/headers: Separate out legacy user-space structure definitions 

Better separate the user-space struct sigcontext definitions
from the kernel definitions, so that we can unify the kernel
definitions with sigcontext32.h.

Acked-by: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/1441438363-9999-5-git-send-email-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-09-05 09:32:32 +02:00
parent cbf5f4fbf4
commit 128f8257a1
1 changed files with 59 additions and 60 deletions
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117
arch/x86/include/uapi/asm/sigcontext.h
View File

@ -124,36 +124,6 @@ struct _fpstate {
};
};
# ifndef __KERNEL__
/*
* User-space might still rely on the old definition:
*/
struct sigcontext {
unsigned short gs, __gsh;
unsigned short fs, __fsh;
unsigned short es, __esh;
unsigned short ds, __dsh;
unsigned long edi;
unsigned long esi;
unsigned long ebp;
unsigned long esp;
unsigned long ebx;
unsigned long edx;
unsigned long ecx;
unsigned long eax;
unsigned long trapno;
unsigned long err;
unsigned long eip;
unsigned short cs, __csh;
unsigned long eflags;
unsigned long esp_at_signal;
unsigned short ss, __ssh;
struct _fpstate __user *fpstate;
unsigned long oldmask;
unsigned long cr2;
};
# endif /* !__KERNEL__ */
#else /* __x86_64__: */
/*
@ -186,10 +156,65 @@ struct _fpstate {
};
};
# ifndef __KERNEL__
#endif /* __x86_64__ */
struct _header {
__u64 xfeatures;
__u64 reserved1[2];
__u64 reserved2[5];
};
struct _ymmh_state {
/* 16x YMM registers, 16 bytes each: */
__u32 ymmh_space[64];
};
/*
* User-space might still rely on the old definition:
* Extended state pointed to by sigcontext::fpstate.
*
* In addition to the fpstate, information encoded in _xstate::xstate_hdr
* indicates the presence of other extended state information supported
* by the CPU and kernel:
*/
struct _xstate {
struct _fpstate fpstate;
struct _header xstate_hdr;
struct _ymmh_state ymmh;
/* New processor state extensions go here: */
};
/*
* The old user-space sigcontext definition, just in case user-space still
* relies on it. The kernel definition (in asm/sigcontext.h) has unified
* field names but otherwise the same layout.
*/
#ifndef __KERNEL__
# ifdef __i386__
struct sigcontext {
unsigned short gs, __gsh;
unsigned short fs, __fsh;
unsigned short es, __esh;
unsigned short ds, __dsh;
unsigned long edi;
unsigned long esi;
unsigned long ebp;
unsigned long esp;
unsigned long ebx;
unsigned long edx;
unsigned long ecx;
unsigned long eax;
unsigned long trapno;
unsigned long err;
unsigned long eip;
unsigned short cs, __csh;
unsigned long eflags;
unsigned long esp_at_signal;
unsigned short ss, __ssh;
struct _fpstate __user *fpstate;
unsigned long oldmask;
unsigned long cr2;
};
# else /* __x86_64__: */
struct sigcontext {
__u64 r8;
__u64 r9;
@ -223,33 +248,7 @@ struct sigcontext {
# endif
__u64 reserved1[8];
};
# endif /* __x86_64__ */
#endif /* !__KERNEL__ */
#endif /* __x86_64__ */
struct _header {
__u64 xfeatures;
__u64 reserved1[2];
__u64 reserved2[5];
};
struct _ymmh_state {
/* 16x YMM registers, 16 bytes each: */
__u32 ymmh_space[64];
};
/*
* Extended state pointed to by sigcontext::fpstate.
*
* In addition to the fpstate, information encoded in _xstate::xstate_hdr
* indicates the presence of other extended state information supported
* by the CPU and kernel:
*/
struct _xstate {
struct _fpstate fpstate;
struct _header xstate_hdr;
struct _ymmh_state ymmh;
/* New processor state extensions go here: */
};
#endif /* _UAPI_ASM_X86_SIGCONTEXT_H */