simon-git: putty (master): Simon Tatham

[Commits to Tartarus hosted VCS]

TL;DR:
  1ec8a84 Add CPUID leaf checks prior to SHA checks

Repository:     https://git.tartarus.org/simon/putty.git
On the web:     https://git.tartarus.org/?p=simon/putty.git
Branch updated: master
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2018-03-22 20:11:19

commit 1ec8a84cf69a53e3c02d54280ff48d22ae571abb
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=1ec8a84cf69a53e3c02d54280ff48d22ae571abb;hp=a27f55e819f2c39ed45425625a0fa63e06089d76
Author: Pavel I. Kryukov <kryukov at frtk.ru>
Date:   Thu Mar 22 21:57:38 2018 +0300

    Add CPUID leaf checks prior to SHA checks
    
    Some old CPUs do not support CPUID to be called with eax=7
    To prevent failures, call CPUID with eax=0 to get the highest possible
    eax value (leaf) and compare it to 7.
    
    GCC does this check internally with __get_cpuid_count function
    
    Thanks to Jeffrey Walton for noticing.

 sshsha.c | 8 ++++++++
 1 file changed, 8 insertions(+)