mirror of
https://github.com/ossrs/srs.git
synced 2025-03-09 15:49:59 +00:00
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/*
|
|
* Copyright 2010-2017 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <setjmp.h>
|
|
#include <signal.h>
|
|
#include "internal/cryptlib.h"
|
|
#include "s390x_arch.h"
|
|
|
|
static sigjmp_buf ill_jmp;
|
|
static void ill_handler(int sig)
|
|
{
|
|
siglongjmp(ill_jmp, sig);
|
|
}
|
|
|
|
void OPENSSL_s390x_facilities(void);
|
|
void OPENSSL_vx_probe(void);
|
|
|
|
struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
|
|
|
|
void OPENSSL_cpuid_setup(void)
|
|
{
|
|
sigset_t oset;
|
|
struct sigaction ill_act, oact;
|
|
|
|
if (OPENSSL_s390xcap_P.stfle[0])
|
|
return;
|
|
|
|
/* set a bit that will not be tested later */
|
|
OPENSSL_s390xcap_P.stfle[0] |= S390X_CAPBIT(0);
|
|
|
|
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, SIGFPE);
|
|
sigdelset(&ill_act.sa_mask, SIGTRAP);
|
|
sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
|
|
sigaction(SIGILL, &ill_act, &oact);
|
|
sigaction(SIGFPE, &ill_act, &oact);
|
|
|
|
/* protection against missing store-facility-list-extended */
|
|
if (sigsetjmp(ill_jmp, 1) == 0)
|
|
OPENSSL_s390x_facilities();
|
|
|
|
/* protection against disabled vector facility */
|
|
if ((OPENSSL_s390xcap_P.stfle[2] & S390X_CAPBIT(S390X_VX))
|
|
&& (sigsetjmp(ill_jmp, 1) == 0)) {
|
|
OPENSSL_vx_probe();
|
|
} else {
|
|
OPENSSL_s390xcap_P.stfle[2] &= ~(S390X_CAPBIT(S390X_VX)
|
|
| S390X_CAPBIT(S390X_VXD)
|
|
| S390X_CAPBIT(S390X_VXE));
|
|
}
|
|
|
|
sigaction(SIGFPE, &oact, NULL);
|
|
sigaction(SIGILL, &oact, NULL);
|
|
sigprocmask(SIG_SETMASK, &oset, NULL);
|
|
}
|