Module Name: src
Committed By: reinoud
Date: Fri Sep 2 14:56:48 UTC 2011
Modified Files:
src/sys/arch/usermode/dev: cpu.c
src/sys/arch/usermode/include: pcb.h
Log Message:
Update trapframe and add system call switchframe
To generate a diff of this commit:
cvs rdiff -u -r1.23 -r1.24 src/sys/arch/usermode/dev/cpu.c
cvs rdiff -u -r1.6 -r1.7 src/sys/arch/usermode/include/pcb.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/usermode/dev/cpu.c
diff -u src/sys/arch/usermode/dev/cpu.c:1.23 src/sys/arch/usermode/dev/cpu.c:1.24
--- src/sys/arch/usermode/dev/cpu.c:1.23 Mon Aug 29 12:46:58 2011
+++ src/sys/arch/usermode/dev/cpu.c Fri Sep 2 14:56:48 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.c,v 1.23 2011/08/29 12:46:58 reinoud Exp $ */
+/* $NetBSD: cpu.c,v 1.24 2011/09/02 14:56:48 reinoud Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <[email protected]>
@@ -29,7 +29,7 @@
#include "opt_cpu.h"
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.23 2011/08/29 12:46:58 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.24 2011/09/02 14:56:48 reinoud Exp $");
#include <sys/param.h>
#include <sys/conf.h>
@@ -286,6 +286,7 @@
panic("%s: shouldn't return", __func__);
}
+extern void syscall(struct lwp *l);
void
cpu_lwp_fork(struct lwp *l1, struct lwp *l2, void *stack, size_t stacksize,
void (*func)(void *), void *arg)
@@ -321,6 +322,8 @@
pcb2->pcb_ucp.uc_flags = _UC_STACK | _UC_CPU;
thunk_makecontext(&pcb2->pcb_ucp, (void (*)(void))cpu_lwp_trampoline,
2, func, arg);
+ thunk_makecontext_1(&pcb2->pcb_syscall_ucp, (void (*)(void))syscall,
+ l2);
}
void
@@ -328,7 +331,6 @@
{
}
-int syscall(lwp_t *l, struct trapframe *tr);
void
cpu_startup(void)
{
@@ -345,10 +347,11 @@
panic("getcontext failed");
uvm_lwp_setuarea(&lwp0, (vaddr_t)&lwp0pcb);
- /* init trapframe (going nowhere!), maybe a panic func? */
- lwp0pcb.pcb_tf.tf_syscall = syscall;
+ /* init switchframes */
memcpy(&lwp0pcb.pcb_userland_ucp, &lwp0pcb.pcb_ucp, sizeof(ucontext_t));
-// thunk_makecontext_trapframe2go(&lwp0pcb.pcb_userland_ucp, NULL, NULL);
+ memcpy(&lwp0pcb.pcb_syscall_ucp, &lwp0pcb.pcb_ucp, sizeof(ucontext_t));
+ thunk_makecontext_1(&lwp0pcb.pcb_syscall_ucp, (void (*)(void))syscall,
+ &lwp0);
}
void
Index: src/sys/arch/usermode/include/pcb.h
diff -u src/sys/arch/usermode/include/pcb.h:1.6 src/sys/arch/usermode/include/pcb.h:1.7
--- src/sys/arch/usermode/include/pcb.h:1.6 Mon Aug 29 12:37:53 2011
+++ src/sys/arch/usermode/include/pcb.h Fri Sep 2 14:56:48 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pcb.h,v 1.6 2011/08/29 12:37:53 reinoud Exp $ */
+/* $NetBSD: pcb.h,v 1.7 2011/09/02 14:56:48 reinoud Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <[email protected]>
@@ -37,15 +37,17 @@
* XXX move to frame.h?
*/
+/* XXX NOT USED YET */
typedef struct trapframe {
- int (*tf_syscall)(lwp_t *, struct trapframe *);
- int tf_reason; /* XXX unused */
- uintptr_t tf_io[8]; /* to transport info */
+// int (*tf_syscall)(lwp_t *, struct trapframe *);
+// int tf_reason; /* XXX unused */
+// uintptr_t tf_io[8]; /* to transport info */
} trapframe_t;
struct pcb {
ucontext_t pcb_ucp; /* lwp switchframe */
+ ucontext_t pcb_syscall_ucp; /* syscall switchframe */
ucontext_t pcb_userland_ucp; /* userland switchframe */
bool pcb_needfree;
struct trapframe pcb_tf;
