diff options
Diffstat (limited to 'arch/openrisc/kernel/traps.c')
| -rw-r--r-- | arch/openrisc/kernel/traps.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/arch/openrisc/kernel/traps.c b/arch/openrisc/kernel/traps.c index fd9a0f2b66c4..0aa6b07efda1 100644 --- a/arch/openrisc/kernel/traps.c +++ b/arch/openrisc/kernel/traps.c @@ -75,8 +75,9 @@ void show_registers(struct pt_regs *regs) in_kernel = 0; printk("CPU #: %d\n" - " PC: %08lx SR: %08lx SP: %08lx\n", - smp_processor_id(), regs->pc, regs->sr, regs->sp); + " PC: %08lx SR: %08lx SP: %08lx FPCSR: %08lx\n", + smp_processor_id(), regs->pc, regs->sr, regs->sp, + regs->fpcsr); printk("GPR00: %08lx GPR01: %08lx GPR02: %08lx GPR03: %08lx\n", 0L, regs->gpr[1], regs->gpr[2], regs->gpr[3]); printk("GPR04: %08lx GPR05: %08lx GPR06: %08lx GPR07: %08lx\n", @@ -242,6 +243,28 @@ asmlinkage void unhandled_exception(struct pt_regs *regs, int ea, int vector) die("Oops", regs, 9); } +asmlinkage void do_fpe_trap(struct pt_regs *regs, unsigned long address) +{ + int code = FPE_FLTUNK; + unsigned long fpcsr = regs->fpcsr; + + if (fpcsr & SPR_FPCSR_IVF) + code = FPE_FLTINV; + else if (fpcsr & SPR_FPCSR_OVF) + code = FPE_FLTOVF; + else if (fpcsr & SPR_FPCSR_UNF) + code = FPE_FLTUND; + else if (fpcsr & SPR_FPCSR_DZF) + code = FPE_FLTDIV; + else if (fpcsr & SPR_FPCSR_IXF) + code = FPE_FLTRES; + + /* Clear all flags */ + regs->fpcsr &= ~SPR_FPCSR_ALLF; + + force_sig_fault(SIGFPE, code, (void __user *)regs->pc); +} + asmlinkage void do_trap(struct pt_regs *regs, unsigned long address) { force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc); |