[PATCH 6/7] Make get_frame_info() more robust

[Franck Bui-Huu <vagabon.xyz@gmail.com>]

Now get_frame_info() wants to detect move sp instruction first. It
assumes that the save ra in the stack instruction can't happen
before allocating frame size space into the stack.

Signed-off-by: Franck Bui-Huu <vagabon.xyz@gmail.com>
---
 arch/mips/kernel/process.c |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index da332d7..309bfa4 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -321,17 +321,15 @@ static int get_frame_info(struct mips_fr
 
 		if (is_jal_jalr_jr_ins(ip))
 			break;
-		if (is_sp_move_ins(ip)) {
-			if (info->frame_size)
-				continue;
-			info->frame_size = - ip->i_format.simmediate;
+		if (!info->frame_size) {
+			if (is_sp_move_ins(ip))
+				info->frame_size = - ip->i_format.simmediate;
+			continue;
 		}
-
-		if (is_ra_save_ins(ip)) {
-			if (info->pc_offset != -1)
-				continue;
+		if (info->pc_offset == -1 && is_ra_save_ins(ip)) {
 			info->pc_offset =
 				ip->i_format.simmediate / sizeof(long);
+			break;
 		}
 	}
 	if (info->frame_size && info->pc_offset >= 0) /* nested */
-- 
1.4.2.rc2