diff options
Diffstat (limited to 'arch/parisc/kernel/traps.c')
| -rw-r--r-- | arch/parisc/kernel/traps.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c index c919e6c0a687..71d31274d782 100644 --- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -627,9 +627,10 @@ void notrace handle_interruption(int code, struct pt_regs *regs) on condition */ if(user_mode(regs)){ si.si_signo = SIGFPE; - /* Set to zero, and let the userspace app figure it out from - the insn pointed to by si_addr */ - si.si_code = FPE_FIXME; + /* Let userspace app figure it out from the insn pointed + * to by si_addr. + */ + si.si_code = FPE_CONDTRAP; si.si_addr = (void __user *) regs->iaoq[0]; force_sig_info(SIGFPE, &si, current); return; @@ -836,6 +837,17 @@ void __init initialize_ivt(const void *iva) if (pdc_instr(&instr) == PDC_OK) ivap[0] = instr; + /* + * Rules for the checksum of the HPMC handler: + * 1. The IVA does not point to PDC/PDH space (ie: the OS has installed + * its own IVA). + * 2. The word at IVA + 32 is nonzero. + * 3. If Length (IVA + 60) is not zero, then Length (IVA + 60) and + * Address (IVA + 56) are word-aligned. + * 4. The checksum of the 8 words starting at IVA + 32 plus the sum of + * the Length/4 words starting at Address is zero. + */ + /* Compute Checksum for HPMC handler */ length = os_hpmc_size; ivap[7] = length; |
