Date: Tue, 26 Apr 2005 14:28:59 GMT From: David Xu <davidxu@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 76008 for review Message-ID: <200504261428.j3QESx6d010465@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=76008 Change 76008 by davidxu@davidxu_tiger on 2005/04/26 14:28:17 Eliminate a branch. Affected files ... .. //depot/projects/davidxu_thread/src/sys/i386/i386/sysenter.s#2 edit Differences ... ==== //depot/projects/davidxu_thread/src/sys/i386/i386/sysenter.s#2 (text+ko) ==== @@ -28,7 +28,7 @@ MEXITCOUNT movl PCPU(CURPCB),%eax testl $PCB_FULLCTX,PCB_FLAGS(%eax) - jnz 2f + jnz 1f /* * Check for ASTs atomically with returning. Disabling CPU * interrupts provides sufficient locking even in the SMP case, @@ -37,10 +37,7 @@ cli movl PCPU(CURTHREAD),%eax testl $TDF_ASTPENDING | TDF_NEEDRESCHED,TD_FLAGS(%eax) - jz 1f - sti - jmp 2f -1: + jnz 1f .globl sysenter_popl_fs sysenter_popl_fs: popl %fs @@ -68,6 +65,8 @@ #endif sysexit -2: /* Requested full context restore, use doreti for that */ +1: + /* Requested full context restore, use doreti for that */ + sti andq $~PCB_FULLCTX,PCB_FLAGS(%rax) jmp doreti
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