From: Michal Simek <monstr@monstr.eu>
Date: Thu, 5 Aug 2010 14:22:22 +0000 (-0500)
Subject: kgdb,powerpc: Replace hardcoded offset by BREAK_INSTR_SIZE
X-Git-Tag: accepted/tizen/common/20141203.182822~10905^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3f0a55e3579a500ce9f5cdab70a5741f99769118;p=platform%2Fkernel%2Flinux-arm64.git

kgdb,powerpc: Replace hardcoded offset by BREAK_INSTR_SIZE

kgdb_handle_breakpoint checks the first arch_kgdb_breakpoint
which is not known by gdb that's why is necessary jump over
it. The jump lenght is equal to BREAK_INSTR_SIZE that's
why is cleaner to use defined macro instead of hardcoded
non-described offset.

Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/kgdb.c b/arch/powerpc/kernel/kgdb.c
index 82a7b22..7f61a3a 100644
--- a/arch/powerpc/kernel/kgdb.c
+++ b/arch/powerpc/kernel/kgdb.c
@@ -129,7 +129,7 @@ static int kgdb_handle_breakpoint(struct pt_regs *regs)
 		return 0;
 
 	if (*(u32 *) (regs->nip) == *(u32 *) (&arch_kgdb_ops.gdb_bpt_instr))
-		regs->nip += 4;
+		regs->nip += BREAK_INSTR_SIZE;
 
 	return 1;
 }