From 91fdacb2c34e05f0a31fd3b51b4cb59538157682 Mon Sep 17 00:00:00 2001 From: Andy Polyakov Date: Tue, 19 Jan 2010 12:24:59 +0000 Subject: s390x assembler update: add support for run-time facility detection. --- crypto/s390xcap.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 crypto/s390xcap.c (limited to 'crypto/s390xcap.c') diff --git a/crypto/s390xcap.c b/crypto/s390xcap.c new file mode 100644 index 0000000000..ffbe0235f9 --- /dev/null +++ b/crypto/s390xcap.c @@ -0,0 +1,37 @@ +#include +#include +#include +#include +#include + +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) return; + + 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,0) == 0) + OPENSSL_s390xcap_P = OPENSSL_s390x_facilities(); + else + OPENSSL_s390xcap_P = 1UL<<63; + + sigaction (SIGILL,&oact,NULL); + sigprocmask(SIG_SETMASK,&oset,NULL); + } -- cgit v1.2.3