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Resurrect cpu_setfunc(), and make cpu_lwp_fork() use it.

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Restores buildable status for the acorn26 kernel.

skrll@ reviewed and commented an earlier version of this diff.
This commit is contained in:
he 2008-10-25 22:12:33 +00:00
parent bd4f4705da
commit 39f71a34bc
1 changed files with 13 additions and 2 deletions
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15
sys/arch/acorn26/acorn26/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.19 2008/01/25 21:23:50 chris Exp $ */ /* $NetBSD: vm_machdep.c,v 1.20 2008/10/25 22:12:33 he Exp $ */
/*- /*-
* Copyright (c) 2000, 2001 Ben Harris * Copyright (c) 2000, 2001 Ben Harris
@ -64,7 +64,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.19 2008/01/25 21:23:50 chris Exp $"); __KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.20 2008/10/25 22:12:33 he Exp $");
#include <sys/param.h> #include <sys/param.h>
#include <sys/buf.h> #include <sys/buf.h>
@ -136,6 +136,17 @@ cpu_lwp_fork(struct lwp *l1, struct lwp *l2, void *stack, size_t stacksize,
l2->l_addr->u_pcb.pcb_tf = tf; l2->l_addr->u_pcb.pcb_tf = tf;
/* Fabricate a new switchframe */ /* Fabricate a new switchframe */
bzero(sf, sizeof(*sf)); bzero(sf, sizeof(*sf));
cpu_setfunc(l2, func, arg);
}
void
cpu_setfunc(struct lwp *l, void (*func)(void *), void *arg)
{
struct pcb *pcb = &l->l_addr->u_pcb;
struct trapframe *tf = pcb->pcb_tf;
struct switchframe *sf = (struct switchframe *)tf - 1;
sf->sf_r13 = (register_t)tf; /* Initial stack pointer */ sf->sf_r13 = (register_t)tf; /* Initial stack pointer */
sf->sf_pc = (register_t)lwp_trampoline | R15_MODE_SVC; sf->sf_pc = (register_t)lwp_trampoline | R15_MODE_SVC;