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bc4e831ccd
Extend the s390x capability vector to store the longer facility list available from z13 onwards. The bits indicating the vector extensions are set to zero, if the kernel does not enable the vector facility. Also add capability bits returned by the crypto instructions' query functions. Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com> Reviewed-by: Andy Polyakov <appro@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4542)
68 lines
1.9 KiB
C
68 lines
1.9 KiB
C
/*
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* Copyright 2010-2017 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <setjmp.h>
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#include <signal.h>
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#include "internal/cryptlib.h"
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#include "s390x_arch.h"
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static sigjmp_buf ill_jmp;
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static void ill_handler(int sig)
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{
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siglongjmp(ill_jmp, sig);
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}
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void OPENSSL_s390x_facilities(void);
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void OPENSSL_vx_probe(void);
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struct OPENSSL_s390xcap_st OPENSSL_s390xcap_P;
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void OPENSSL_cpuid_setup(void)
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{
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sigset_t oset;
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struct sigaction ill_act, oact;
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if (OPENSSL_s390xcap_P.stfle[0])
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return;
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/* set a bit that will not be tested later */
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OPENSSL_s390xcap_P.stfle[0] |= S390X_CAPBIT(0);
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memset(&ill_act, 0, sizeof(ill_act));
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ill_act.sa_handler = ill_handler;
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sigfillset(&ill_act.sa_mask);
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sigdelset(&ill_act.sa_mask, SIGILL);
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sigdelset(&ill_act.sa_mask, SIGFPE);
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sigdelset(&ill_act.sa_mask, SIGTRAP);
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sigprocmask(SIG_SETMASK, &ill_act.sa_mask, &oset);
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sigaction(SIGILL, &ill_act, &oact);
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sigaction(SIGFPE, &ill_act, &oact);
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/* protection against missing store-facility-list-extended */
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if (sigsetjmp(ill_jmp, 1) == 0)
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OPENSSL_s390x_facilities();
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/* protection against disabled vector facility */
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if ((OPENSSL_s390xcap_P.stfle[2] & S390X_CAPBIT(S390X_VX))
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&& (sigsetjmp(ill_jmp, 1) == 0)) {
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OPENSSL_vx_probe();
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} else {
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OPENSSL_s390xcap_P.stfle[2] &= ~(S390X_CAPBIT(S390X_VX)
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| S390X_CAPBIT(S390X_VXD)
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| S390X_CAPBIT(S390X_VXE));
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}
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sigaction(SIGFPE, &oact, NULL);
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sigaction(SIGILL, &oact, NULL);
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sigprocmask(SIG_SETMASK, &oset, NULL);
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}
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