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s390x assembler update: add support for run-time facility detection […
…from HEAD].
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Andy Polyakov
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Jan 19, 2010
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,37 @@ | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
#include <setjmp.h> | ||
#include <signal.h> | ||
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extern unsigned long OPENSSL_s390xcap_P; | ||
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static sigjmp_buf ill_jmp; | ||
static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); } | ||
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unsigned long OPENSSL_s390x_facilities(void); | ||
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void OPENSSL_cpuid_setup(void) | ||
{ | ||
sigset_t oset; | ||
struct sigaction ill_act,oact; | ||
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if (OPENSSL_s390xcap_P) return; | ||
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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); | ||
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/* 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; | ||
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sigaction (SIGILL,&oact,NULL); | ||
sigprocmask(SIG_SETMASK,&oset,NULL); | ||
} |
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