| 51,8 → 51,12 |
|---|
| cpu_priority_high(); |
| cp0_status_write(cp0_status_read() & ~ (cp0_status_exl_exception_bit | |
| cp0_status_um_bit)); |
| |
| /* Save pstate so that the threads can access it */ |
| if (THREAD) |
| /* If THREAD->pstate is set, this is nested exception, |
| * do not rewrite it |
| */ |
| if (THREAD && !THREAD->pstate) |
| THREAD->pstate = pstate; |
| |
| /* decode exception number and process the exception */ |
| 64,6 → 68,13 |
|---|
| case EXC_TLBS: |
| tlb_invalid(pstate); |
| break; |
| case EXC_CpU: |
| #ifdef FPU_LAZY |
| scheduler_fpu_lazy_request(); |
| #else |
| panic("unhandled Coprocessor Unusable Exception\n"); |
| #endif |
| break; |
| case EXC_Mod: |
| panic("unhandled TLB Modification Exception\n"); |
| break; |
| 87,13 → 98,6 |
|---|
| case EXC_RI: |
| panic("unhandled Reserved Instruction Exception\n"); |
| break; |
| case EXC_CpU: |
| #ifdef FPU_LAZY |
| scheduler_fpu_lazy_request(); |
| #else |
| panic("unhandled Coprocessor Unusable Exception\n"); |
| #endif |
| break; |
| case EXC_Ov: |
| panic("unhandled Arithmetic Overflow Exception\n"); |
| break; |
| 117,8 → 121,12 |
|---|
| } |
| |
| pstate->epc += epc_shift; |
| /* Probable not needed, but just for sure that nobody |
| * will continue accessing it */ |
| /* Set to NULL, so that we can still support nested |
| * exceptions |
| * TODO: We should probably set EXL bit before this command, |
| * nesting. On the other hand, if some exception occurs between |
| * here and ERET, it won't set anything on the pstate anyway. |
| */ |
| if (THREAD) |
| THREAD->pstate = NULL; |
| } |