Commit 70b76d39 authored by Andy Polyakov's avatar Andy Polyakov
Browse files

ppccap.c: fix compiler warning and perform sanity check outside signal masking. 

ppc64-mont.pl: clarify comment and fix spelling.
parent 6a9d28f9

crypto/bn/asm/ppc64-mont.pl

+2 −2
Original line number Diff line number Diff line
@@ -56,10 +56,10 @@ 
# 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 can be as low as 1/3 of

# so severe that 512-bit 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...

# Alternative is to break dependence 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

# collected.

crypto/ppccap.c

+3 −1
Original line number Diff line number Diff line
@@ -25,7 +25,7 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U 
#else

		/* boundary of 32 was experimentally determined on

		   Linux 2.6.22, might have to be adjusted on AIX... */

		if ((num>=32) && (OPENSSL_ppccap_P&PPC_FPU64))

		if (num>=32 && (num&3)==0 && (OPENSSL_ppccap_P&PPC_FPU64))

			{

			sigset_t oset;

			int ret;
@@ -50,6 +50,8 @@ int bn_mul_mont(BN_ULONG *rp, const BN_ULONG *ap, const BN_ULONG *bp, const BN_U 
static sigjmp_buf ill_jmp;

static void ill_handler (int sig) { siglongjmp(ill_jmp,sig); }



void OPENSSL_ppc64_probe(void);



void OPENSSL_cpuid_setup(void)

	{

	char *e;