linux-kernel - [tip:x86/urgent] x86/asm: Use CC_SET()/CC_OUT() in __gen

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 PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Thu, 30 Aug 2018 04:07:27 -0700
From:   tip-bot for Uros Bizjak <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     ubizjak@...il.com, mingo@...nel.org, hpa@...or.com,
        linux-kernel@...r.kernel.org, tglx@...utronix.de
Subject: [tip:x86/urgent] x86/asm: Use CC_SET()/CC_OUT() in
 __gen_sigismember()

Commit-ID:  26e609eccd37967d3681662433086894830c5d62
Gitweb:     https://git.kernel.org/tip/26e609eccd37967d3681662433086894830c5d62
Author:     Uros Bizjak <ubizjak@...il.com>
AuthorDate: Tue, 14 Aug 2018 18:59:51 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Thu, 30 Aug 2018 13:02:31 +0200

x86/asm: Use CC_SET()/CC_OUT() in __gen_sigismember()

Replace open-coded set instructions with CC_SET()/CC_OUT().

Signed-off-by: Uros Bizjak <ubizjak@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lkml.kernel.org/r/20180814165951.13538-1-ubizjak@gmail.com

---
 arch/x86/include/asm/signal.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/signal.h b/arch/x86/include/asm/signal.h
index 5f9012ff52ed..33d3c88a7225 100644
--- a/arch/x86/include/asm/signal.h
+++ b/arch/x86/include/asm/signal.h
@@ -39,6 +39,7 @@ extern void do_signal(struct pt_regs *regs);
 
 #define __ARCH_HAS_SA_RESTORER
 
+#include <asm/asm.h>
 #include <uapi/asm/sigcontext.h>
 
 #ifdef __i386__
@@ -86,9 +87,9 @@ static inline int __const_sigismember(sigset_t *set, int _sig)
 
 static inline int __gen_sigismember(sigset_t *set, int _sig)
 {
-	unsigned char ret;
-	asm("btl %2,%1\n\tsetc %0"
-	    : "=qm"(ret) : "m"(*set), "Ir"(_sig-1) : "cc");
+	bool ret;
+	asm("btl %2,%1" CC_SET(c)
+	    : CC_OUT(c) (ret) : "m"(*set), "Ir"(_sig-1));
 	return ret;
 }