1 files changed, 22 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 76bf2cea61d7..534227f4da30 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -42,6 +42,7 @@
 #include <asm/cacheflush.h>
 #include <asm/blackfin.h>
 #include <asm/cplbinit.h>
+#include <asm/fixed_code.h>
 
 u16 _bfin_swrst;
 
@@ -404,6 +405,27 @@ void __init setup_arch(char **cmdline_p)
 
         printk(KERN_INFO "Hardware Trace Enabled\n");
         bfin_write_TBUFCTL(0x03);
+
+        /* Copy atomic sequences to their fixed location, and sanity check that
+           these locations are the ones that we advertise to userspace.  */
+        memcpy((void *)FIXED_CODE_START, &fixed_code_start,
+               FIXED_CODE_END - FIXED_CODE_START);
+        BUG_ON((char *)&sigreturn_stub - (char *)&fixed_code_start
+               != SIGRETURN_STUB - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_xchg32 - (char *)&fixed_code_start
+               != ATOMIC_XCHG32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_cas32 - (char *)&fixed_code_start
+               != ATOMIC_CAS32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_add32 - (char *)&fixed_code_start
+               != ATOMIC_ADD32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_sub32 - (char *)&fixed_code_start
+               != ATOMIC_SUB32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_ior32 - (char *)&fixed_code_start
+               != ATOMIC_IOR32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_and32 - (char *)&fixed_code_start
+               != ATOMIC_AND32 - FIXED_CODE_START);
+        BUG_ON((char *)&atomic_xor32 - (char *)&fixed_code_start
+               != ATOMIC_XOR32 - FIXED_CODE_START);
 }
 
 static int __init topology_init(void)