void
dumpregs(Ureg* ureg)
{
vlong mca, mct;
dumpregs2(ureg);
/*
* Processor control registers.
* If machine check exception, time stamp counter, page size extensions
* or enhanced virtual 8086 mode extensions are supported, there is a
* CR4. If there is a CR4 and machine check extensions, read the machine
* check address and machine check type registers if RDMSR supported.
*/
iprint(" CR0 %8.8lux CR2 %8.8lux CR3 %8.8lux",
getcr0(), getcr2(), getcr3());
if(m->cpuiddx & 0x9A){
iprint(" CR4 %8.8lux", getcr4());
if((m->cpuiddx & 0xA0) == 0xA0){
rdmsr(0x00, &mca);
rdmsr(0x01, &mct);
iprint("\n MCA %8.8llux MCT %8.8llux", mca, mct);
}
}
iprint("\n ur %#p up %#p\n", ureg, up);
}
void
dumpregs(Ureg* ureg)
{
dumpregs2(ureg);
/*
* Processor control registers.
* If machine check exception, time stamp counter, page size extensions
* or enhanced virtual 8086 mode extensions are supported, there is a
* CR4. If there is a CR4 and machine check extensions, read the machine
* check address and machine check type registers if RDMSR supported.
*/
iprint(" CR0 %8.8lux CR2 %8.8lux CR3 %8.8lux",
getcr0(), getcr2(), getcr3());
if(m->cpuiddx & (Mce|Tsc|Pse|Vmex)){
iprint(" CR4 %8.8lux\n", getcr4());
if(ureg->trap == 18)
dumpmcregs();
}
iprint("\n ur %#p up %#p\n", ureg, up);
}
static void
fault386(Ureg* ureg, void*)
{
ulong addr;
int read, user, n, insyscall;
char buf[ERRMAX];
addr = getcr2();
read = !(ureg->ecode & 2);
user = (ureg->cs & 0xFFFF) == UESEL;
if(!user){
if(vmapsync(addr))
return;
if(addr >= USTKTOP)
panic("kernel fault: bad address pc=0x%.8lux addr=0x%.8lux", ureg->pc, addr);
if(up == nil)
panic("kernel fault: no user process pc=0x%.8lux addr=0x%.8lux", ureg->pc, addr);
}
if(up == nil)
panic("user fault: up=0 pc=0x%.8lux addr=0x%.8lux", ureg->pc, addr);
insyscall = up->insyscall;
up->insyscall = 1;
n = fault(addr, read);
if(n < 0){
if(!user){
dumpregs(ureg);
panic("fault: 0x%lux", addr);
}
checkpages();
checkfault(addr, ureg->pc);
sprint(buf, "sys: trap: fault %s addr=0x%lux",
read ? "read" : "write", addr);
postnote(up, 1, buf, NDebug);
}
up->insyscall = insyscall;
}
