From: Niels Möller <nisse@lysator.liu.se>
Date: Sun, 27 Apr 2025 18:36:38 +0000 (+0200)
Subject: ppc64: Use 64-bit compare in _sha256_compress_n.
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8916a040e26770cb7b7b161c8fece2fd6e6efaa7;p=thirdparty%2Fnettle.git

ppc64: Use 64-bit compare in _sha256_compress_n.
---

diff --git a/ChangeLog b/ChangeLog
index 14ba0358..8e5a6836 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2025-04-27  Niels Möller  <nisse@lysator.liu.se>
+
+	* powerpc64/p8/sha256-compress-n.asm: Use 64-bit unsigned compare
+	for blocks == 0 check, cmpldi instruction.
+
 2025-04-09  Niels Möller  <nisse@lysator.liu.se>
 
 	* testsuite/testutils.c (test_cipher): Test encrypt and
diff --git a/powerpc64/p8/sha256-compress-n.asm b/powerpc64/p8/sha256-compress-n.asm
index 75666deb..60cb707a 100644
--- a/powerpc64/p8/sha256-compress-n.asm
+++ b/powerpc64/p8/sha256-compress-n.asm
@@ -207,8 +207,8 @@ define(`DOLOADS', `
 
 .text
 PROLOGUE(_nettle_sha256_compress_n)
-	cmpwi	0, NUMBLOCKS, 0
-	ble	0, .done
+	cmpldi	NUMBLOCKS, 0
+	ble	.done
 	mtctr	NUMBLOCKS
 
 	C Store non-volatile registers