/*
* Common low level (register) ptrace helpers
*
* Copyright 2004-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ASM_GENERIC_PTRACE_H__
#define __ASM_GENERIC_PTRACE_H__
#ifndef __ASSEMBLY__
/* Helpers for working with the instruction pointer */
#ifndef GET_IP
#define GET_IP(regs) ((regs)->pc)
#endif
#ifndef SET_IP
#define SET_IP(regs, val) (GET_IP(regs) = (val))
#endif
static inline unsigned long instruction_pointer(struct pt_regs *regs)
{
return GET_IP(regs);
}
static inline void instruction_pointer_set(struct pt_regs *regs,
unsigned long val)
{
SET_IP(regs, val);
}
#ifndef profile_pc
#define profile_pc(regs) instruction_pointer(regs)
#endif
/* Helpers for working with the user stack pointer */
#ifndef GET_USP
#define GET_USP(regs) ((regs)->usp)
#endif
#ifndef SET_USP
#define SET_USP(regs, val) (GET_USP(regs) = (val))
#endif
static inline unsigned long user_stack_pointer(struct pt_regs *regs)
{
return GET_USP(regs);
}
static inline void user_stack_pointer_set(struct pt_regs *regs,
unsigned long val)
{
SET_USP(regs, val);
}
/* Helpers for working with the frame pointer */
#ifndef GET_FP
#define GET_FP(regs) ((regs)->fp)
#endif
#ifndef SET_FP
#define SET_FP(regs, val) (GET_FP(regs) = (val))
#endif
static inline unsigned long frame_pointer(struct pt_regs *regs)
{
return GET_FP(regs);
}
static inline void frame_pointer_set(struct pt_regs *regs,
unsigned long val)
{
SET_FP(regs, val);
}
#endif /* __ASSEMBLY__ */
#endif
d1538544f0fa849c5b76c7823469'>refslogtreecommitdiff
objtool: Fix IRET's opcode
The IRET opcode is 0xcf according to the Intel manual and also to objdump of my
vmlinux:
1ea8: 48 cf iretq
Fix the opcode in arch_decode_instruction().
The previous value (0xc5) seems to correspond to LDS.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170118132921.19319-1-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>