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From: Peter Wemm <peter@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 30038 for review
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http://perforce.freebsd.org/chv.cgi?CH=30038

Change 30038 by peter@peter_daintree on 2003/04/29 12:08:46

	Can't use %rdx for fiddling with PSL_T, because %rdx is the third
	register arg for the call, which clobbers the 'env' argument to exect()

Affected files ...

.. //depot/projects/hammer/lib/libc/x86_64/sys/exect.S#4 edit

Differences ...

==== //depot/projects/hammer/lib/libc/x86_64/sys/exect.S#4 (text+ko) ====

@@ -46,9 +46,9 @@
 ENTRY(exect)
 	movq	$SYS_execve,%rax
 	pushfq
-	popq	%rdx
-	orq	$ PSL_T,%rdx
-	pushq	%rdx
+	popq	%r8
+	orq	$PSL_T,%r8
+	pushq	%r8
 	popfq
 	KERNCALL
 	jmp	PIC_PLT(HIDENAME(cerror))	/* exect(file, argv, env); */