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-rw-r--r--arch/mips/kernel/scall64-o32.S12
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 13b964f..25bb840 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -113,15 +113,19 @@ trace_a_syscall:
move s0, t2 # Save syscall pointer
move a0, sp
/*
- * syscall number is in v0 unless we called syscall(__NR_###)
+ * absolute syscall number is in v0 unless we called syscall(__NR_###)
* where the real syscall number is in a0
* note: NR_syscall is the first O32 syscall but the macro is
* only defined when compiling with -mabi=32 (CONFIG_32BIT)
* therefore __NR_O32_Linux is used (4000)
*/
- addiu a1, v0, __NR_O32_Linux
- bnez v0, 1f /* __NR_syscall at offset 0 */
- lw a1, PT_R4(sp)
+ .set push
+ .set reorder
+ subu t1, v0, __NR_O32_Linux
+ move a1, v0
+ bnez t1, 1f /* __NR_syscall at offset 0 */
+ lw a1, PT_R4(sp) /* Arg1 for __NR_syscall case */
+ .set pop
1: jal syscall_trace_enter
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