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Commit a3460a59 authored by Al Viro's avatar Al Viro
Browse files

new helper: current_pt_regs() 



Normally (and that's the default) it's just task_pt_regs(current).
However, if an architecture can optimize that, it can do so by
making a macro of its own available from asm/ptrace.h.  More
importantly, some architectures have task_pt_regs() working only
for traced tasks blocked on signal delivery.  current_pt_regs()
needs to work for *all* processes, so before those architectures
start using stuff relying on current_pt_regs() they'll need a
properly working variant.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 2aa3a7f8

include/linux/ptrace.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -403,6 +403,10 @@ static inline void user_single_step_siginfo(struct task_struct *tsk, 
#define arch_ptrace_stop(code, info)		do { } while (0)

#define arch_ptrace_stop(code, info)		do { } while (0)

#endif

#endif





#ifndef current_pt_regs

#define current_pt_regs() task_pt_regs(current)

#endif



extern int task_current_syscall(struct task_struct *target, long *callno,

extern int task_current_syscall(struct task_struct *target, long *callno,

				unsigned long args[6], unsigned int maxargs,

				unsigned long args[6], unsigned int maxargs,

				unsigned long *sp, unsigned long *pc);

				unsigned long *sp, unsigned long *pc);