e90e147cbc
- Misleading and slightly incorrect comments in "struct pt_regs" are fixed (four instances). - Fix incorrect comment atop EMPTY_FRAME macro. - Explain in more detail what we do with stack layout during hw interrupt. - Correct comments about "partial stack frame" which are no longer true. Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> Signed-off-by: Andy Lutomirski <luto@amacapital.net> Cc: Alexei Starovoitov <ast@plumgrid.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Kees Cook <keescook@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Will Drewry <wad@chromium.org> Link: http://lkml.kernel.org/r/1423778052-21038-3-git-send-email-dvlasenk@redhat.com Link: http://lkml.kernel.org/r/e1f4429c491fe6ceeddb879dea2786e0f8920f9c.1424989793.git.luto@amacapital.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
86 lines
1.5 KiB
C
86 lines
1.5 KiB
C
#ifndef _UAPI_ASM_X86_PTRACE_H
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#define _UAPI_ASM_X86_PTRACE_H
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#include <linux/compiler.h> /* For __user */
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#include <asm/ptrace-abi.h>
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#include <asm/processor-flags.h>
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#ifndef __ASSEMBLY__
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#ifdef __i386__
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/* this struct defines the way the registers are stored on the
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stack during a system call. */
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#ifndef __KERNEL__
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struct pt_regs {
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long ebx;
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long ecx;
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long edx;
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long esi;
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long edi;
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long ebp;
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long eax;
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int xds;
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int xes;
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int xfs;
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int xgs;
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long orig_eax;
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long eip;
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int xcs;
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long eflags;
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long esp;
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int xss;
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};
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#endif /* __KERNEL__ */
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#else /* __i386__ */
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#ifndef __KERNEL__
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struct pt_regs {
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/*
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* C ABI says these regs are callee-preserved. They aren't saved on kernel entry
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* unless syscall needs a complete, fully filled "struct pt_regs".
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*/
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unsigned long r15;
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unsigned long r14;
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unsigned long r13;
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unsigned long r12;
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unsigned long rbp;
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unsigned long rbx;
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/* These regs are callee-clobbered. Always saved on kernel entry. */
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unsigned long r11;
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unsigned long r10;
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unsigned long r9;
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unsigned long r8;
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unsigned long rax;
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unsigned long rcx;
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unsigned long rdx;
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unsigned long rsi;
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unsigned long rdi;
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/*
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* On syscall entry, this is syscall#. On CPU exception, this is error code.
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* On hw interrupt, it's IRQ number:
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*/
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unsigned long orig_rax;
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/* Return frame for iretq */
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unsigned long rip;
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unsigned long cs;
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unsigned long eflags;
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unsigned long rsp;
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unsigned long ss;
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/* top of stack page */
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};
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#endif /* __KERNEL__ */
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#endif /* !__i386__ */
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#endif /* !__ASSEMBLY__ */
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#endif /* _UAPI_ASM_X86_PTRACE_H */
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