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Commit aa5add93 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Ingo Molnar
Browse files

x86/ptrace: Remove unused regs_get_argument_nth API 



Because of dropping function argument syntax from kprobe-tracer,
we don't need this API anymore.

Signed-off-by: default avatarMasami Hiramatsu <mhiramat@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michael Neuling <mikey@neuling.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linuxppc-dev@ozlabs.org
LKML-Reference: <20100105224656.19431.92588.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 14640106

arch/x86/include/asm/ptrace.h

+0 −4
Original line number Diff line number Diff line
@@ -274,10 +274,6 @@ static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, 
		return 0;

}



/* Get Nth argument at function call */

extern unsigned long regs_get_argument_nth(struct pt_regs *regs,

					   unsigned int n);



/*

 * These are defined as per linux/ptrace.h, which see.

 */

arch/x86/kernel/ptrace.c

+0 −24
Original line number Diff line number Diff line
@@ -140,30 +140,6 @@ static const int arg_offs_table[] = { 
#endif

};



/**

 * regs_get_argument_nth() - get Nth argument at function call

 * @regs:	pt_regs which contains registers at function entry.

 * @n:		argument number.

 *

 * regs_get_argument_nth() returns @n th argument of a function call.

 * Since usually the kernel stack will be changed right after function entry,

 * you must use this at function entry. If the @n th entry is NOT in the

 * kernel stack or pt_regs, this returns 0.

 */

unsigned long regs_get_argument_nth(struct pt_regs *regs, unsigned int n)

{

	if (n < ARRAY_SIZE(arg_offs_table))

		return *(unsigned long *)((char *)regs + arg_offs_table[n]);

	else {

		/*

		 * The typical case: arg n is on the stack.

		 * (Note: stack[0] = return address, so skip it)

		 */

		n -= ARRAY_SIZE(arg_offs_table);

		return regs_get_kernel_stack_nth(regs, 1 + n);

	}

}



/*

 * does not yet catch signals sent when the child dies.

 * in exit.c or in signal.c.