Module Name: src
Committed By: reinoud
Date: Wed Sep 7 14:03:49 UTC 2011
Modified Files:
src/sys/arch/usermode/usermode: trap.c
Log Message:
Add skeleton for possible system call implementation
To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.33 src/sys/arch/usermode/usermode/trap.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/usermode/usermode/trap.c
diff -u src/sys/arch/usermode/usermode/trap.c:1.32 src/sys/arch/usermode/usermode/trap.c:1.33
--- src/sys/arch/usermode/usermode/trap.c:1.32 Wed Sep 7 10:19:40 2011
+++ src/sys/arch/usermode/usermode/trap.c Wed Sep 7 14:03:49 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: trap.c,v 1.32 2011/09/07 10:19:40 reinoud Exp $ */
+/* $NetBSD: trap.c,v 1.33 2011/09/07 14:03:49 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <rein...@netbsd.org>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.32 2011/09/07 10:19:40 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.33 2011/09/07 14:03:49 reinoud Exp $");
#include <sys/types.h>
#include <sys/param.h>
@@ -43,6 +43,9 @@
#include <machine/pmap.h>
#include <machine/thunk.h>
+#include <sys/syscallvar.h>
+#include <sys/syscallargs.h>
+
//#include <machine/ctlreg.h>
//#include <machine/trap.h>
//#include <machine/instr.h>
@@ -281,9 +284,22 @@
printf("\n");
#endif
- /* TODO MD syscall pre-fixup */
- /* TODO system call issueing */
- /* TODO MD syscall post-fixup */
+#if 0
+ /* MD syscall pre-fixup: extract `trapframe' from the MD ctx */
+ syscall_pre_fixup(info->si_addr, ctx, &pcb->pcb_tf);
+
+printf("retrieved opcode %"PRIiPTR"\n", opcode);
+
+ /* system call issueing */
+ curcpu()->ci_data.cpu_nsyscall++;
+
+ /* XXX do we want do do emulation? */
+ LWP_CACHE_CREDS(l, l->l_proc);
+ syscall(l, &pcb->pcb_tf);
+
+ /* MD syscall post-fixup : convert `trapframe' back to MD ctx */
+ syscall_post_fixup(info->si_addr, ctx, &pcb->pcb_tf);
+#endif
panic("illegal instruction encountered\n");
}
