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#include <arch.h>
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#include <arch.h>
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#include <debug.h>
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#include <debug.h>
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void exception(struct exception_regdump *pstate)
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void exception(struct exception_regdump *pstate)
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{
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{
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    int cause;
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    int excno;
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    int excno;
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    __u32 epc_shift = 0;
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    __u32 epc_shift = 0;
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    ASSERT(CPU != NULL);
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    ASSERT(CPU != NULL);
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     * do not rewrite it
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     * do not rewrite it
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     */
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     */
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    if (THREAD && !THREAD->pstate)
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    if (THREAD && !THREAD->pstate)
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        THREAD->pstate = pstate;
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        THREAD->pstate = pstate;
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    cause = cp0_cause_read();
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    excno = cp0_cause_excno(cause);
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    /* decode exception number and process the exception */
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    /* decode exception number and process the exception */
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    switch (excno = (cp0_cause_read() >> 2) & 0x1f) {
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    switch (excno) {
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        case EXC_Int:
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        case EXC_Int:
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            interrupt();
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            interrupt();
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            break;
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            break;
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        case EXC_TLBL:
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        case EXC_TLBL:
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        case EXC_TLBS:
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        case EXC_TLBS:
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            tlb_invalid(pstate);
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            tlb_invalid(pstate);
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            break;
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            break;
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        case EXC_CpU:
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        case EXC_CpU:
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#ifdef FPU_LAZY    
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#ifdef FPU_LAZY    
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            if (cp0_cause_coperr(cause) == fpu_cop_id)
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            scheduler_fpu_lazy_request();
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                scheduler_fpu_lazy_request();
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#else
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            else
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            panic("unhandled Coprocessor Unusable Exception\n");
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#endif
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#endif
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                panic("unhandled Coprocessor Unusable Exception\n");
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            break;
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            break;
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        case EXC_Mod:
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        case EXC_Mod:
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            panic("unhandled TLB Modification Exception\n");
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            panic("unhandled TLB Modification Exception\n");
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            break;
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            break;
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        case EXC_AdEL:
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        case EXC_AdEL: