[LV-kern-commit] kernel-2.4/arch/vax/kernel syscall.c,1.11,1.12 entry.S,1.10,1.11

[<ai...@us...>]

Update of /cvsroot/linux-vax/kernel-2.4/arch/vax/kernel
In directory sc8-pr-cvs1:/tmp/cvs-serv22224

Modified Files:
	syscall.c entry.S 
Log Message:
add syscall tracing


Index: syscall.c
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.4/arch/vax/kernel/syscall.c,v
retrieving revision 1.11
retrieving revision 1.12
diff -u -d -r1.11 -r1.12
--- syscall.c	12 Feb 2003 02:37:33 -0000	1.11
+++ syscall.c	5 Oct 2003 07:54:43 -0000	1.12
@@ -31,6 +31,7 @@
    Later we'll probably re-write this in asm.  */
 
 extern unsigned long *sys_call_table[256];
+extern void syscall_trace(void);
 
 void syscall_handler(struct pt_regs *regs, void *excep_info)
 {
@@ -38,6 +39,9 @@
 	unsigned int *user_ap;
 	unsigned int nr_args;
 
+	if (current->ptrace & PT_TRACESYS)
+	  syscall_trace();
+
 	chmk_arg = *(unsigned int *)(excep_info);
 
 	if (chmk_arg >= NR_syscalls) {
@@ -119,7 +123,8 @@
 		: "r0","r1","r2","r3","r4","r5" /* clobbers*/ );
 
 //	printk("syscall %d returned %ld (0x%08lx)\n", chmk_arg, regs->r0, regs->r0);
-
+	if (current->ptrace & PT_TRACESYS)
+	  syscall_trace();
 	return;
 }
 

Index: entry.S
===================================================================
RCS file: /cvsroot/linux-vax/kernel-2.4/arch/vax/kernel/entry.S,v
retrieving revision 1.10
retrieving revision 1.11
diff -u -d -r1.10 -r1.11
--- entry.S	3 Oct 2003 11:47:06 -0000	1.10
+++ entry.S	5 Oct 2003 07:54:43 -0000	1.11
@@ -11,6 +11,8 @@
 #include <linux/sys.h>
 #include <asm/mtpr.h>
 
+tsk_ptrace	= 24
+	
 /* irqvec_handler is the generic handler for all interrupts and
    exceptions for which a driver (or other code) has registered
    a handler. Except machine checks. We are responsible for 
@@ -199,7 +201,16 @@
             that we just scheduled away from on this CPU). */
          pushl %r0
          calls $1, schedule_tail
+	 mfpr $0, %r0
+	 bicl2 $0x00001fff,%r0
+         movl tsk_ptrace(%r0), %r0
+	 cmpl $0x02, %r0
+	 bneq tracesys_exit
          brb ret_from_syscall
+
+tracesys_exit:	
+	calls $0, syscall_trace
+	brb ret_from_syscall
 	
 /* irqvec_stray is the generic handler for all exceptions and interrupts
    for which there is no registered handler.  We just save all registers,