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ppccap.c: tidy up.

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ppc64-mont.pl: missing predicate in commentary.
This commit is contained in:
Andy Polyakov 2009-12-27 11:25:24 +00:00
parent b4b48a107c
commit d741cf2267
2 changed files with 8 additions and 5 deletions
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6
crypto/bn/asm/ppc64-mont.pl
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@ -56,9 +56,9 @@
# that asynchronous signals have to be blocked upon entry to this
# subroutine. Signal masking (and complementary unmasking) has quite
# an impact on performance, naturally larger for shorter keys. It's
# so severe that shorter key performance as low as 1/3 of expected
# one. This is why this routine should be engaged for longer key
# operations only, see crypto/ppccap.c for further details.
# so severe that shorter key performance can be as low as 1/3 of
# expected one. This is why this routine can be engaged for longer
# key operations only, see crypto/ppccap.c for further details.
# Alternative is to break dependance on upper halves on GPRs...
# MacOS X is an exception from this and doesn't require signal
# masking, and that's where above improvement coefficients were

7
crypto/ppccap.c
View File

@ -11,6 +11,7 @@ static int OPENSSL_ppccap_P = 0;
static sigset_t all_masked;
#ifdef OPENSSL_BN_ASM_MONT
int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num)
{
int bn_mul_mont_fpu64(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_ULONG *np, const BN_ULONG *n0, int num);
@ -44,6 +45,7 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U
return bn_mul_mont_int(rp,ap,bp,np,n0,num);
}
#endif
static sigjmp_buf ill_jmp;
static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }
@ -55,6 +57,8 @@ void OPENSSL_cpuid_setup(void)
sigfillset(&all_masked);
sigdelset(&all_masked,SIGSEGV);
sigdelset(&all_masked,SIGILL);
sigdelset(&all_masked,SIGBUS);
sigdelset(&all_masked,SIGFPE);
if ((e=getenv("OPENSSL_ppccap")))
{
@ -69,8 +73,7 @@ void OPENSSL_cpuid_setup(void)
memset(&ill_act,0,sizeof(ill_act));
ill_act.sa_handler = ill_handler;
sigfillset(&ill_act.sa_mask);
sigdelset(&ill_act.sa_mask,SIGILL);
ill_act.sa_mask = all_masked;
sigprocmask(SIG_SETMASK,&ill_act.sa_mask,&oset);
sigaction (SIGILL,&ill_act,&ill_oact);
if (sigsetjmp(ill_jmp,0) == 0)