inital commit

1 files changed, 42 insertions, 0 deletions

diff --git a/openssl/crypto/s390xcap.c b/openssl/crypto/s390xcap.c
new file mode 100644
index 0000000..cf8c372
--- /dev/null
+++ b/openssl/crypto/s390xcap.c
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <setjmp.h>
+#include <signal.h>
+#include "cryptlib.h"
+
+extern unsigned long OPENSSL_s390xcap_P[];
+
+static sigjmp_buf ill_jmp;
+static void ill_handler(int sig)
+{
+    siglongjmp(ill_jmp, sig);
+}
+
+unsigned long OPENSSL_s390x_facilities(void);
+
+void OPENSSL_cpuid_setup(void)
+{
+    sigset_t oset;
+    struct sigaction ill_act, oact;
+
+    if (OPENSSL_s390xcap_P[0])
+        return;
+
+    OPENSSL_s390xcap_P[0] = 1UL << (8 * sizeof(unsigned long) - 1);
+
+    memset(&ill_act, 0, sizeof(ill_act));
+    ill_act.sa_handler = ill_handler;
+    sigfillset(&ill_act.sa_mask);
+    sigdelset(&ill_act.sa_mask, SIGILL);
+    sigdelset(&ill_act.sa_mask, SIGTRAP);
+    sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
+    sigaction(SIGILL, &ill_act, &oact);
+
+    /* protection against missing store-facility-list-extended */
+    if (sigsetjmp(ill_jmp, 1) == 0)
+        OPENSSL_s390x_facilities();
+
+    sigaction(SIGILL, &oact, NULL);
+    sigprocmask(SIG_SETMASK, &oset, NULL);
+}