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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "ureg.h"
#include "../port/error.h"
/*
* find out fault address and type of access.
* Call common fault handler.
*/
void
faultalpha(Ureg *ur)
{
ulong addr, cause;
int read, user;
char buf[ERRMAX];
uvlong x;
x = ur->a0&0xffffffff80000000LL;
if (x != 0LL && x != 0xffffffff80000000LL)
iprint("faultalpha bad addr %llux pc %llux\n", ur->a0, ur->pc);
addr = (ulong)ur->a0;
cause = (ulong)ur->a2;
addr &= ~(BY2PG-1);
read = (cause !=1);
user = (ulong)ur->status&UMODE;
/* print("fault %s pc=0x%lux addr=0x%lux 0x%lux\n",
read? (cause != 0) ? "ifetch" : "read" : "write", (ulong)ur->pc, addr, (ulong)ur->a1); /**/
if(fault(addr, read) == 0)
return;
if(user){
sprint(buf, "sys: trap: fault %s addr=0x%lux",
read? (cause != 0) ? "ifetch" : "read" : "write", (ulong)ur->a0);
postnote(up, 1, buf, NDebug);
return;
}
iprint("kernel %s vaddr=0x%lux\n", read? (cause != 0) ? "ifetch" : "read" : "write", (ulong)ur->a0);
if(0)
mmudump();
dumpregs(ur);
_dumpstack(ur);
exit(1);
}
/*
* called in sysfile.c
*/
void
evenaddr(ulong addr)
{
if(addr & 3){
postnote(up, 1, "sys: odd address", NDebug);
error(Ebadarg);
}
}
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