leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86: kprobes remove fix_riprel #ifdef

Browse Source 
Move #ifdef around function definiton into the function and
unconditionally return on X86_32.  Saves an ifdef from the
one callsite.

[ mingo@elte.hu: minor cleanup. ]

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Harvey Harrison 2008-01-30 13:32:16 +01:00 committed by Ingo Molnar
parent 9930927f36
commit 31f80e45ea
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/x86/kernel/kprobes.c
View File

@ -263,15 +263,16 @@ static int __kprobes is_IF_modifier(kprobe_opcode_t *insn)
return 0;
}
#ifdef CONFIG_X86_64
/*
* Adjust the displacement if the instruction uses the %rip-relative
* addressing mode.
* If it does, Return the address of the 32-bit displacement word.
* If not, return null.
* Only applicable to 64-bit x86.
*/
static void __kprobes fix_riprel(struct kprobe *p)
{
#ifdef CONFIG_X86_64
u8 *insn = p->ainsn.insn;
s64 disp;
int need_modrm;
@ -335,15 +336,15 @@ static void __kprobes fix_riprel(struct kprobe *p)
*(s32 *)insn = (s32) disp;
}
}
}
#endif
}
static void __kprobes arch_copy_kprobe(struct kprobe *p)
{
memcpy(p->ainsn.insn, p->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
#ifdef CONFIG_X86_64
fix_riprel(p);
#endif
if (can_boost(p->addr))
p->ainsn.boostable = 0;
else