Module Name: src Committed By: riz Date: Wed May 9 20:09:15 UTC 2012
Modified Files: src/sys/arch/powerpc/powerpc [netbsd-6]: vm_machdep.c Log Message: Pull up following revision(s) (requested by matt in ticket #239): sys/arch/powerpc/powerpc/vm_machdep.c: revision 1.96 When a stack is specified, make sure the stack has enough for a previous callframe in which the LR can be stored. (atf test t_clone:clone_basic now passes). To generate a diff of this commit: cvs rdiff -u -r1.94 -r1.94.2.1 src/sys/arch/powerpc/powerpc/vm_machdep.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/powerpc/powerpc/vm_machdep.c diff -u src/sys/arch/powerpc/powerpc/vm_machdep.c:1.94 src/sys/arch/powerpc/powerpc/vm_machdep.c:1.94.2.1 --- src/sys/arch/powerpc/powerpc/vm_machdep.c:1.94 Mon Feb 13 13:44:14 2012 +++ src/sys/arch/powerpc/powerpc/vm_machdep.c Wed May 9 20:09:15 2012 @@ -1,4 +1,4 @@ -/* $NetBSD: vm_machdep.c,v 1.94 2012/02/13 13:44:14 phx Exp $ */ +/* $NetBSD: vm_machdep.c,v 1.94.2.1 2012/05/09 20:09:15 riz Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. @@ -32,7 +32,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.94 2012/02/13 13:44:14 phx Exp $"); +__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.94.2.1 2012/05/09 20:09:15 riz Exp $"); #include "opt_altivec.h" #include "opt_multiprocessor.h" @@ -108,10 +108,13 @@ cpu_lwp_fork(struct lwp *l1, struct lwp *l2->l_md.md_utf = *l1->l_md.md_utf; /* - * If specified, give the child a different stack. + * If specified, give the child a different stack. Make sure to + * reserve enough at the top to store the previous LR. */ if (stack != NULL) { - l2->l_md.md_utf->tf_fixreg[1] = (register_t)stack + stacksize; + l2->l_md.md_utf->tf_fixreg[1] = + ((register_t)stack + stacksize - STACK_ALIGNBYTES) + & ~STACK_ALIGNBYTES; } /*