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x86: x86-64 ptrace debugreg cleanup

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This cleans up the 64-bit ptrace code to separate the guts of the
debug register access from the implementation of PTRACE_PEEKUSR and
PTRACE_POKEUSR.  The new functions ptrace_[gs]et_debugreg are made
global so that the ia32 code can later be changed to call them too.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Roland McGrath 2008-01-30 13:30:52 +01:00 • committed by Ingo Molnar
commit 962ff3804d
2 changed files with 69 additions and 74 deletions
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3
include/asm-x86/ptrace.h
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@ -110,6 +110,9 @@ void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
struct task_struct;
extern unsigned long ptrace_get_debugreg(struct task_struct *child, int n);
extern int ptrace_set_debugreg(struct task_struct *child, int n, unsigned long);
extern unsigned long
convert_rip_to_linear(struct task_struct *child, struct pt_regs *regs);