[src/trunk]: src/crypto/external/bsd/openssl/dist/crypto PR/53838: Scole Mail...

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6dae3ca92399
branches:  trunk
changeset: 447293:6dae3ca92399
user:      christos <christos%NetBSD.org@localhost>
date:      Sun Jan 06 22:20:50 2019 +0000

description:
PR/53838: Scole Mail: OPENSSL_rdtsc() is reading a time counter
for randomness, and the powerpc code uses mftbu and mftb for access.
The 601 is different than other powerpcs. It doesn't have a time
base register (TBR), but a real time clock (RTC) so it needs to
use different calls like mfrtcu/mfrtcl instead.

diffstat:

 crypto/external/bsd/openssl/dist/crypto/ppccpuid.pl |  11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diffs (21 lines):

diff -r 3c1865a64992 -r 6dae3ca92399 crypto/external/bsd/openssl/dist/crypto/ppccpuid.pl
--- a/crypto/external/bsd/openssl/dist/crypto/ppccpuid.pl       Sun Jan 06 19:44:54 2019 +0000
+++ b/crypto/external/bsd/openssl/dist/crypto/ppccpuid.pl       Sun Jan 06 22:20:50 2019 +0000
@@ -132,6 +132,17 @@
        mftb    r3
 ___
 $code.=<<___   if ($flavour !~ /64/);
+       mfspr   r0,287
+       srwi    r0,r0,0x10
+       cmplwi  r0,0x1
+       bgt     .Loop_rdtsc
+.Loop_rdtsc_601:       
+       mfrtcu  r5
+       mfrtcl  r3
+       mfrtcu  r4
+       cmplw   r4,r5
+       bne     .Loop_rdtsc_601
+       blr
 Loop_rdtsc:
        mftbu   r5
        mftb    r3