void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
{
siginfo_t info;
if (user_mode(regs)) {
info.si_signo = si_signo;
info.si_errno = 0;
info.si_code = si_code;
info.si_addr = get_trap_ip(regs);
force_sig_info(si_signo, &info, current);
report_user_fault(regs, si_signo);
} else {
const struct exception_table_entry *fixup;
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
if (fixup)
regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
else {
enum bug_trap_type btt;
btt = report_bug(regs->psw.addr & PSW_ADDR_INSN, regs);
if (btt == BUG_TRAP_TYPE_WARN)
return;
die(regs, str);
}
}
}
static noinline void do_no_context(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
unsigned long address;
/* Are we prepared to handle this kernel fault? */
fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
if (fixup) {
regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
return;
}
/*
* Oops. The kernel tried to access some bad page. We'll have to
* terminate things with extreme prejudice.
*/
address = regs->int_parm_long & __FAIL_ADDR_MASK;
if (!user_space_fault(regs->int_parm_long))
printk(KERN_ALERT "Unable to handle kernel pointer dereference"
" at virtual kernel address %p\n", (void *)address);
else
printk(KERN_ALERT "Unable to handle kernel paging request"
" at virtual user address %p\n", (void *)address);
die(regs, "Oops");
do_exit(SIGKILL);
}
static noinline void do_no_context(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
/* Are we prepared to handle this kernel fault? */
fixup = search_exception_tables(regs->psw.addr);
if (fixup) {
regs->psw.addr = extable_fixup(fixup);
return;
}
/*
* Oops. The kernel tried to access some bad page. We'll have to
* terminate things with extreme prejudice.
*/
if (get_fault_type(regs) == KERNEL_FAULT)
printk(KERN_ALERT "Unable to handle kernel pointer dereference"
" in virtual kernel address space\n");
else
printk(KERN_ALERT "Unable to handle kernel paging request"
" in virtual user address space\n");
dump_fault_info(regs);
die(regs, "Oops");
do_exit(SIGKILL);
}
static int mpc7448_machine_check_exception(struct pt_regs *regs)
{
const struct exception_table_entry *entry;
/* Are we prepared to handle this fault */
if ((entry = search_exception_tables(regs->nip)) != NULL) {
tsi108_clear_pci_cfg_error();
regs->msr |= MSR_RI;
regs->nip = extable_fixup(entry);
return 1;
}
return 0;
}
