linux-kernel - [PATCH 06/31] Add ia64-specific parity functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <56F776E2.4090609@gmail.com>
Date:	Sun, 27 Mar 2016 14:00:02 +0800
From:	"zhaoxiu.zeng" <zhaoxiu.zeng@...il.com>
To:	Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>
Cc:	linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org
Subject: [PATCH 06/31] Add ia64-specific parity functions

From: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com>

Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com>
---
 arch/ia64/include/asm/bitops.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/ia64/include/asm/bitops.h b/arch/ia64/include/asm/bitops.h
index 71e8145..de13d89 100644
--- a/arch/ia64/include/asm/bitops.h
+++ b/arch/ia64/include/asm/bitops.h
@@ -439,6 +439,22 @@ static __inline__ unsigned long __arch_hweight64(unsigned long x)
 
 #include <asm-generic/bitops/const_hweight.h>
 
+/*
+ * parityN: returns the parity of a N-bit word,
+ * i.e. the number of 1-bits in x modulo 2.
+ */
+static __inline__ unsigned int __arch_parity64(unsigned long x)
+{
+	return (unsigned int)ia64_popcnt(x) & 1;
+}
+
+#define __arch_parity32(x) ((unsigned int) __arch_parity64((x) & 0xfffffffful))
+#define __arch_parity16(x) ((unsigned int) __arch_parity64((x) & 0xfffful))
+#define __arch_parity8(x)  ((unsigned int) __arch_parity64((x) & 0xfful))
+#define __arch_parity4(x)  ((unsigned int) __arch_parity64((x) & 0xful))
+
+#include <asm-generic/bitops/const_parity.h>
+
 #endif /* __KERNEL__ */
 
 #include <asm-generic/bitops/find.h>
-- 
2.5.5