From 791d0a169b912220d58e0ce4564d7bf1e68146a8 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 6 Aug 2010 10:36:02 +0200 Subject: [PATCH] microblaze: Fix sys_rt_sigreturn_wrapper Do not save return registers before rt_sigreturn is called. _user_exception(syscall handler) already setup return address that's why it is removed from rt_sigreturn_wrapper. Signed-off-by: Michal Simek --- arch/microblaze/kernel/entry.S | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/microblaze/kernel/entry.S b/arch/microblaze/kernel/entry.S index 304882e56459..ab4f1e159308 100644 --- a/arch/microblaze/kernel/entry.S +++ b/arch/microblaze/kernel/entry.S @@ -458,14 +458,8 @@ C_ENTRY(sys_execve): addik r8, r1, PTO; /* add user context as 4th arg */ C_ENTRY(sys_rt_sigreturn_wrapper): - swi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */ - swi r4, r1, PTO+PT_R4; - brlid r15, sys_rt_sigreturn /* Do real work */ + brid sys_rt_sigreturn /* Do real work */ addik r5, r1, PTO; /* add user context as 1st arg */ - lwi r3, r1, PTO+PT_R3; /* restore saved r3, r4 registers */ - lwi r4, r1, PTO+PT_R4; - bri ret_from_trap /* fall through will not work here due to align */ - nop; /* * HW EXCEPTION rutine start -- 2.39.5