ARM: SECCOMP support

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>

1 files changed, 13 insertions, 2 deletions

diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 7885722bdf4..0385a8207b6 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -295,7 +295,6 @@ ENTRY(vector_swi)
 
         get_thread_info tsk
         adr     tbl, sys_call_table             @ load syscall table pointer
-        ldr     ip, [tsk, #TI_FLAGS]            @ check for syscall tracing
 
 #if defined(CONFIG_OABI_COMPAT)
         /*
@@ -312,8 +311,20 @@ ENTRY(vector_swi)
         eor     scno, scno, #__NR_SYSCALL_BASE  @ check OS number
 #endif
 
+        ldr     r10, [tsk, #TI_FLAGS]           @ check for syscall tracing
         stmdb   sp!, {r4, r5}                   @ push fifth and sixth args
-        tst     ip, #_TIF_SYSCALL_TRACE         @ are we tracing syscalls?
+
+#ifdef CONFIG_SECCOMP
+        tst     r10, #_TIF_SECCOMP
+        beq     1f
+        mov     r0, scno
+        bl      __secure_computing      
+        add     r0, sp, #S_R0 + S_OFF           @ pointer to regs
+        ldmia   r0, {r0 - r3}                   @ have to reload r0 - r3
+1:
+#endif
+
+        tst     r10, #_TIF_SYSCALL_TRACE                @ are we tracing syscalls?
         bne     __sys_trace
 
         cmp     scno, #NR_syscalls              @ check upper syscall limit