summaryrefslogtreecommitdiff
path: root/arch/alpha/lib/dbg_current.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/lib/dbg_current.S')
-rw-r--r--arch/alpha/lib/dbg_current.S29
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/alpha/lib/dbg_current.S b/arch/alpha/lib/dbg_current.S
new file mode 100644
index 000000000..e6d071015
--- /dev/null
+++ b/arch/alpha/lib/dbg_current.S
@@ -0,0 +1,29 @@
+/*
+ * arch/alpha/lib/dbg_current.S
+ * Contributed by Richard Henderson (rth@cygnus.com)
+ *
+ * Trap if we find current not correct.
+ */
+
+#include <asm/pal.h>
+
+ .text
+ .set noat
+
+ .globl _mcount
+ .ent _mcount
+_mcount:
+ .frame $30, 0, $28, 0
+ .prologue 0
+
+ lda $0, -0x4000($30)
+ cmpult $8, $30, $1
+ cmpule $0, $30, $2
+ and $1, $2, $3
+ bne $3, 1f
+
+ call_pal PAL_bugchk
+
+1: ret $31, ($28), 1
+
+ .end _mcount