From: Nick Mathewson <nickm@torproject.org>
Date: Thu, 22 May 2025 16:05:12 +0000 (-0400)
Subject: polyval: clean up cpuid code
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=81ab782a6375d6c788573ef2c04c93cc89cb5cc4;p=thirdparty%2Ftor.git

polyval: clean up cpuid code

(Based on comments by Alex Xu)
---

diff --git a/src/ext/polyval/polyval.c b/src/ext/polyval/polyval.c
index 900a50385b..69e6e0c2c5 100644
--- a/src/ext/polyval/polyval.c
+++ b/src/ext/polyval/polyval.c
@@ -431,10 +431,10 @@ PV_DECLARE(, , u128_from_bytes_ctmul,
 void
 polyval_detect_implementation(void)
 {
-  unsigned int eax, ebc, ecx, edx;
+  unsigned int eax, ebx, ecx, edx;
   use_pclmul = false;
-  if (__get_cpuid(1, &eax, &ebc, &ecx, &edx)) {
-    if (0 != (ecx & (1<<1))) {
+  if (__get_cpuid(1, &eax, &ebx, &ecx, &edx)) {
+    if (0 != (ecx & bit_PCLMUL)) {
       use_pclmul = true;
     }
   }