Add the initial structure of SIGILL handling and CPU-specific interface.

1 files changed, 36 insertions, 0 deletions

diff --git a/risu_i386.c b/risu_i386.c
new file mode 100644
index 0000000..673a711
--- /dev/null
+++ b/risu_i386.c
@@ -0,0 +1,36 @@
+/* Copyright 2010 Linaro Limited */
+
+#include <stdio.h>
+
+#include "risu.h"
+
+int send_register_info(int sock, void *uc)
+{
+   return send_data_pkt(sock, "S", 1);
+}
+
+static unsigned char cmd;
+
+/* Read register info from the socket and compare it with that from the
+ * ucontext. Return 0 for match, 1 for end-of-test, 2 for mismatch.
+ * NB: called from a signal handler.
+ */
+int recv_and_compare_register_info(int sock, void *uc)
+{
+   recv_data_pkt(sock, &cmd, 1);
+   int resp = (cmd == 'S') ? 1 : 2;
+   send_response_byte(sock, resp);
+   return resp;
+}
+
+/* Print a useful report on the status of the last comparison
+ * done in recv_and_compare_register_info(). This is called on
+ * exit, so need not restrict itself to signal-safe functions.
+ * Should return 0 if it was a good match (ie end of test)
+ * and 1 for a mismatch.
+ */
+int report_match_status(void)
+{
+   fprintf(stderr, "match status: command %c\n", cmd);
+   return (cmd == 'S') ? 0 : 1;
+}