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Add support for ktracing syscalls.

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This commit is contained in:
ragge 1996-03-09 23:37:20 +00:00
parent 5bfb840114
commit 24b2b310ae
1 changed files with 32 additions and 10 deletions
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42
sys/arch/vax/vax/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.17 1996/02/02 23:19:43 mycroft Exp $ */
/* $NetBSD: trap.c,v 1.18 1996/03/09 23:37:20 ragge Exp $ */
/*
* Copyright (c) 1994 Ludd, University of Lule}, Sweden.
@ -51,7 +51,9 @@
#include <machine/trap.h>
#include <machine/pmap.h>
#include <kern/syscalls.c>
#ifdef KTRACE
#include <sys/ktrace.h>
#endif
extern int want_resched,whichqs;
volatile int startsysc=0,ovalidstart=0,faultdebug=0,haltfault=0;
@ -388,9 +390,21 @@ if(startsysc)printf("trap syscall %s pc %x, psl %x, sp %x, pid %d, frame %x\n",
rval[0]=0;
rval[1]=frame->r1;
if(callp->sy_narg)
copyin((char*)frame->ap+4, args, callp->sy_argsize);
if(callp->sy_narg) {
err = copyin((char*)frame->ap+4, args, callp->sy_argsize);
if (err) {
#ifdef KTRACE
if (KTRPOINT(p, KTR_SYSCALL))
ktrsyscall(p->p_tracep, frame->code,
callp->sy_argsize, args);
#endif
goto bad;
}
}
#ifdef KTRACE
if (KTRPOINT(p, KTR_SYSCALL))
ktrsyscall(p->p_tracep, frame->code, callp->sy_argsize, args);
#endif
err=(*callp->sy_call)(curproc,args,rval);
exptr=curproc->p_addr->u_pcb.framep;
@ -399,23 +413,31 @@ if(startsysc)
syscallnames[exptr->code], exptr->pc, exptr->psl,exptr->sp,
curproc->p_pid,err,rval[0],rval[1],exptr);
switch(err){
bad:
switch (err) {
case 0:
exptr->r1=rval[1];
exptr->r0=rval[0];
exptr->r1 = rval[1];
exptr->r0 = rval[0];
exptr->psl &= ~PSL_C;
break;
case EJUSTRETURN:
return;
case ERESTART:
exptr->pc=exptr->pc-2;
exptr->pc = exptr->pc-2;
break;
default:
exptr->r0=err;
exptr->r0 = err;
exptr->psl |= PSL_C;
break;
}
userret(curproc, exptr->pc, exptr->psl);
#ifdef KTRACE
if (KTRPOINT(p, KTR_SYSRET))
ktrsysret(p->p_tracep, frame->code, err, rval[0]);
#endif
}
stray(scb, vec){