[MIPS] Fix register handling in syscalls when debugging.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 5a16401..3d338ca 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -124,6 +124,8 @@
li a1, 0
jal do_syscall_trace
+ move t0, s0
+ RESTORE_STATIC
ld a0, PT_R4(sp) # Restore argument registers
ld a1, PT_R5(sp)
ld a2, PT_R6(sp)
@@ -132,7 +134,7 @@
ld a5, PT_R9(sp)
ld a6, PT_R10(sp)
ld a7, PT_R11(sp) # For indirect syscalls
- jalr s0
+ jalr t0
li t0, -EMAXERRNO - 1 # error?
sltu t0, t0, v0