| 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
| ||
|
Message-ID: <56F7819E.5020502@gmail.com> Date: Sun, 27 Mar 2016 14:45:50 +0800 From: "zhaoxiu.zeng" <zhaoxiu.zeng@...il.com> To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>, Denys Vlasenko <dvlasenk@...hat.com> Cc: linux-kernel@...r.kernel.org, x86@...nel.org Subject: [PATCH 11/31] Add x86-specific parity functions From: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com> --- arch/x86/include/asm/bitops.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h index 7766d1c..d3210c0 100644 --- a/arch/x86/include/asm/bitops.h +++ b/arch/x86/include/asm/bitops.h @@ -501,6 +501,18 @@ static __always_inline int fls64(__u64 x) #include <asm-generic/bitops/const_hweight.h> +#define __arch_parity32(x) (__arch_hweight32(x) & 1) +#define __arch_parity4(x) (__arch_parity32((x) & 0xf)) +#define __arch_parity8(x) (__arch_parity32((x) & 0xff)) +#define __arch_parity16(x) (__arch_parity32((x) & 0xffff)) +#ifdef CONFIG_X86_32 +#define __arch_parity64(x) (__arch_parity32((unsigned int)((x) >> 32) ^ (unsigned int)(x))) +#else +#define __arch_parity64(x) (__arch_hweight64(x) & 1) +#endif + +#include <asm-generic/bitops/const_parity.h> + #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic-setbit.h> -- 2.5.5
Powered by blists - more mailing lists