Module Name: src
Committed By: martin
Date: Mon Jun 1 20:58:16 UTC 2009
Modified Files:
src/sys/arch/alpha/alpha: locore.s vm_machdep.c
src/sys/arch/alpha/include: alpha.h
Log Message:
Do not use lwp_trampoline for cpu_setfunc, but a simplified setfunc_trampoline
that does not call lwp_startup() instead.
To generate a diff of this commit:
cvs rdiff -u -r1.113 -r1.114 src/sys/arch/alpha/alpha/locore.s
cvs rdiff -u -r1.99 -r1.100 src/sys/arch/alpha/alpha/vm_machdep.c
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/alpha/include/alpha.h
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/alpha/alpha/locore.s
diff -u src/sys/arch/alpha/alpha/locore.s:1.113 src/sys/arch/alpha/alpha/locore.s:1.114
--- src/sys/arch/alpha/alpha/locore.s:1.113 Mon Apr 28 20:23:10 2008
+++ src/sys/arch/alpha/alpha/locore.s Mon Jun 1 20:58:16 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: locore.s,v 1.113 2008/04/28 20:23:10 martin Exp $ */
+/* $NetBSD: locore.s,v 1.114 2009/06/01 20:58:16 martin Exp $ */
/*-
* Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
#include <machine/asm.h>
-__KERNEL_RCSID(0, "$NetBSD: locore.s,v 1.113 2008/04/28 20:23:10 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: locore.s,v 1.114 2009/06/01 20:58:16 martin Exp $");
#include "assym.h"
@@ -748,6 +748,16 @@
jmp zero, (pv)
END(lwp_trampoline)
+/*
+ * Simplified version of above: don't call lwp_startup()
+ */
+LEAF_NOPROFILE(setfunc_trampoline, 0)
+ mov s0, pv
+ mov s1, ra
+ mov s2, a0
+ jmp zero, (pv)
+ END(setfunc_trampoline)
+
/**************************************************************************/
/*
Index: src/sys/arch/alpha/alpha/vm_machdep.c
diff -u src/sys/arch/alpha/alpha/vm_machdep.c:1.99 src/sys/arch/alpha/alpha/vm_machdep.c:1.100
--- src/sys/arch/alpha/alpha/vm_machdep.c:1.99 Mon Mar 16 23:11:09 2009
+++ src/sys/arch/alpha/alpha/vm_machdep.c Mon Jun 1 20:58:16 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: vm_machdep.c,v 1.99 2009/03/16 23:11:09 dsl Exp $ */
+/* $NetBSD: vm_machdep.c,v 1.100 2009/06/01 20:58:16 martin Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@@ -29,7 +29,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
-__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.99 2009/03/16 23:11:09 dsl Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.100 2009/06/01 20:58:16 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -85,6 +85,7 @@
void (*func)(void *), void *arg)
{
struct user *up = l2->l_addr;
+ extern void lwp_trampoline(void);
l2->l_md.md_tf = l1->l_md.md_tf;
l2->l_md.md_flags = l1->l_md.md_flags & (MDP_FPUSED | MDP_FP_C);
@@ -150,7 +151,19 @@
l2tf->tf_regs[FRAME_A3] = 0; /* no error */
l2tf->tf_regs[FRAME_A4] = 1; /* is child */
- cpu_setfunc(l2, func, arg);
+ up = l2->l_addr;
+ up->u_pcb.pcb_hw.apcb_ksp =
+ (u_int64_t)l2->l_md.md_tf;
+ up->u_pcb.pcb_context[0] =
+ (u_int64_t)func; /* s0: pc */
+ up->u_pcb.pcb_context[1] =
+ (u_int64_t)exception_return; /* s1: ra */
+ up->u_pcb.pcb_context[2] =
+ (u_int64_t)arg; /* s2: arg */
+ up->u_pcb.pcb_context[3] =
+ (u_int64_t)l2; /* s3: lwp */
+ up->u_pcb.pcb_context[7] =
+ (u_int64_t)lwp_trampoline; /* ra: assembly magic */
}
}
@@ -158,6 +171,7 @@
cpu_setfunc(struct lwp *l, void (*func)(void *), void *arg)
{
struct user *up = l->l_addr;
+ extern void setfunc_trampoline(void);
up->u_pcb.pcb_hw.apcb_ksp =
(u_int64_t)l->l_md.md_tf;
@@ -167,10 +181,8 @@
(u_int64_t)exception_return; /* s1: ra */
up->u_pcb.pcb_context[2] =
(u_int64_t)arg; /* s2: arg */
- up->u_pcb.pcb_context[3] =
- (u_int64_t)l; /* s3: lwp */
up->u_pcb.pcb_context[7] =
- (u_int64_t)lwp_trampoline; /* ra: assembly magic */
+ (u_int64_t)setfunc_trampoline; /* ra: assembly magic */
}
/*
Index: src/sys/arch/alpha/include/alpha.h
diff -u src/sys/arch/alpha/include/alpha.h:1.23 src/sys/arch/alpha/include/alpha.h:1.24
--- src/sys/arch/alpha/include/alpha.h:1.23 Wed Nov 28 17:40:03 2007
+++ src/sys/arch/alpha/include/alpha.h Mon Jun 1 20:58:16 2009
@@ -1,4 +1,4 @@
-/* $NetBSD: alpha.h,v 1.23 2007/11/28 17:40:03 ad Exp $ */
+/* $NetBSD: alpha.h,v 1.24 2009/06/01 20:58:16 martin Exp $ */
/*
* Copyright (c) 1982, 1990, 1993
@@ -139,7 +139,6 @@
void regdump(struct trapframe *);
void regtoframe(const struct reg *, struct trapframe *);
void savectx(struct pcb *);
-void lwp_trampoline(void); /* MAGIC */
void trap(unsigned long, unsigned long, unsigned long, unsigned long,
struct trapframe *);
void trap_init(void);
