mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 20:01:55 +00:00
9a036b93a3
As far as I can tell, these fields have been set to zero on save and ignored on restore since Linux was imported into git. Rename them '__pad1' and '__pad2' to avoid confusion. This may also allow us to recycle them some day. This also adds a comment clarifying the history of those fields. I'm intentionally avoiding calling either of them '__pad0': the field formerly known as '__pad0' is now 'ss'. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/844f8490e938780c03355be4c9b69eb4c494bf4e.1426193719.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
#ifndef _ASM_X86_SIGCONTEXT_H
|
|
#define _ASM_X86_SIGCONTEXT_H
|
|
|
|
#include <uapi/asm/sigcontext.h>
|
|
|
|
#ifdef __i386__
|
|
struct sigcontext {
|
|
unsigned short gs, __gsh;
|
|
unsigned short fs, __fsh;
|
|
unsigned short es, __esh;
|
|
unsigned short ds, __dsh;
|
|
unsigned long di;
|
|
unsigned long si;
|
|
unsigned long bp;
|
|
unsigned long sp;
|
|
unsigned long bx;
|
|
unsigned long dx;
|
|
unsigned long cx;
|
|
unsigned long ax;
|
|
unsigned long trapno;
|
|
unsigned long err;
|
|
unsigned long ip;
|
|
unsigned short cs, __csh;
|
|
unsigned long flags;
|
|
unsigned long sp_at_signal;
|
|
unsigned short ss, __ssh;
|
|
|
|
/*
|
|
* fpstate is really (struct _fpstate *) or (struct _xstate *)
|
|
* depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
|
|
* bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
|
|
* of extended memory layout. See comments at the definition of
|
|
* (struct _fpx_sw_bytes)
|
|
*/
|
|
void __user *fpstate; /* zero when no FPU/extended context */
|
|
unsigned long oldmask;
|
|
unsigned long cr2;
|
|
};
|
|
#else /* __i386__ */
|
|
struct sigcontext {
|
|
unsigned long r8;
|
|
unsigned long r9;
|
|
unsigned long r10;
|
|
unsigned long r11;
|
|
unsigned long r12;
|
|
unsigned long r13;
|
|
unsigned long r14;
|
|
unsigned long r15;
|
|
unsigned long di;
|
|
unsigned long si;
|
|
unsigned long bp;
|
|
unsigned long bx;
|
|
unsigned long dx;
|
|
unsigned long ax;
|
|
unsigned long cx;
|
|
unsigned long sp;
|
|
unsigned long ip;
|
|
unsigned long flags;
|
|
unsigned short cs;
|
|
unsigned short __pad2; /* Was called gs, but was always zero. */
|
|
unsigned short __pad1; /* Was called fs, but was always zero. */
|
|
unsigned short ss;
|
|
unsigned long err;
|
|
unsigned long trapno;
|
|
unsigned long oldmask;
|
|
unsigned long cr2;
|
|
|
|
/*
|
|
* fpstate is really (struct _fpstate *) or (struct _xstate *)
|
|
* depending on the FP_XSTATE_MAGIC1 encoded in the SW reserved
|
|
* bytes of (struct _fpstate) and FP_XSTATE_MAGIC2 present at the end
|
|
* of extended memory layout. See comments at the definition of
|
|
* (struct _fpx_sw_bytes)
|
|
*/
|
|
void __user *fpstate; /* zero when no FPU/extended context */
|
|
unsigned long reserved1[8];
|
|
};
|
|
#endif /* !__i386__ */
|
|
#endif /* _ASM_X86_SIGCONTEXT_H */
|