target: check args to mrc/mcr.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

diff --git a/src/target/target.c b/src/target/target.c
index d4662f71176b09b8368a23b970a48ff8496a40f8..9b07df18bde6da8ed400e6650e6d9164f3bb8760 100644 (file)
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -722,6 +722,30 @@ static int arm_cp_check(struct target_s *target, int cpnum, uint32_t op1, uint32
                return ERROR_FAIL;
        }
 
+       if (op1>7)
+       {
+               LOG_ERROR("Illegal op1");
+               return ERROR_FAIL;
+       }
+
+       if (op2>7)
+       {
+               LOG_ERROR("Illegal op2");
+               return ERROR_FAIL;
+       }
+
+       if (CRn>15)
+       {
+               LOG_ERROR("Illegal CRn");
+               return ERROR_FAIL;
+       }
+
+       if (CRm>7)
+       {
+               LOG_ERROR("Illegal CRm");
+               return ERROR_FAIL;
+       }
+
        return ERROR_OK;
 }