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head/sys/riscv/riscv/trap.c
| Show First 20 Lines • Show All 152 Lines • ▼ Show 20 Lines | dump_regs(struct trapframe *frame) | ||||
| printf("gp == 0x%016lx\n", frame->tf_gp); | printf("gp == 0x%016lx\n", frame->tf_gp); | ||||
| printf("tp == 0x%016lx\n", frame->tf_tp); | printf("tp == 0x%016lx\n", frame->tf_tp); | ||||
| printf("sepc == 0x%016lx\n", frame->tf_sepc); | printf("sepc == 0x%016lx\n", frame->tf_sepc); | ||||
| printf("sstatus == 0x%016lx\n", frame->tf_sstatus); | printf("sstatus == 0x%016lx\n", frame->tf_sstatus); | ||||
| } | } | ||||
| static void | static void | ||||
| svc_handler(struct trapframe *frame) | ecall_handler(struct trapframe *frame) | ||||
| { | { | ||||
| struct thread *td; | struct thread *td; | ||||
| td = curthread; | td = curthread; | ||||
| KASSERT(td->td_frame == frame, | KASSERT(td->td_frame == frame, | ||||
| ("%s: td_frame %p != frame %p", __func__, td->td_frame, frame)); | ("%s: td_frame %p != frame %p", __func__, td->td_frame, frame)); | ||||
| syscallenter(td); | syscallenter(td); | ||||
| syscallret(td); | syscallret(td); | ||||
| } | } | ||||
| static void | static void | ||||
| data_abort(struct trapframe *frame, int usermode) | page_fault_handler(struct trapframe *frame, int usermode) | ||||
| { | { | ||||
| struct vm_map *map; | struct vm_map *map; | ||||
| uint64_t stval; | uint64_t stval; | ||||
| struct thread *td; | struct thread *td; | ||||
| struct pcb *pcb; | struct pcb *pcb; | ||||
| vm_prot_t ftype; | vm_prot_t ftype; | ||||
| vm_offset_t va; | vm_offset_t va; | ||||
| struct proc *p; | struct proc *p; | ||||
| ▲ Show 20 Lines • Show All 101 Lines • ▼ Show 20 Lines | #endif | ||||
| case EXCP_FAULT_LOAD: | case EXCP_FAULT_LOAD: | ||||
| case EXCP_FAULT_STORE: | case EXCP_FAULT_STORE: | ||||
| case EXCP_FAULT_FETCH: | case EXCP_FAULT_FETCH: | ||||
| dump_regs(frame); | dump_regs(frame); | ||||
| panic("Memory access exception at 0x%016lx\n", frame->tf_sepc); | panic("Memory access exception at 0x%016lx\n", frame->tf_sepc); | ||||
| break; | break; | ||||
| case EXCP_STORE_PAGE_FAULT: | case EXCP_STORE_PAGE_FAULT: | ||||
| case EXCP_LOAD_PAGE_FAULT: | case EXCP_LOAD_PAGE_FAULT: | ||||
| data_abort(frame, 0); | page_fault_handler(frame, 0); | ||||
| break; | break; | ||||
| case EXCP_BREAKPOINT: | case EXCP_BREAKPOINT: | ||||
| #ifdef KDTRACE_HOOKS | #ifdef KDTRACE_HOOKS | ||||
| if (dtrace_invop_jump_addr != NULL && | if (dtrace_invop_jump_addr != NULL && | ||||
| dtrace_invop_jump_addr(frame) == 0) | dtrace_invop_jump_addr(frame) == 0) | ||||
| break; | break; | ||||
| #endif | #endif | ||||
| #ifdef KDB | #ifdef KDB | ||||
| ▲ Show 20 Lines • Show All 46 Lines • ▼ Show 20 Lines | do_trap_user(struct trapframe *frame) | ||||
| case EXCP_FAULT_FETCH: | case EXCP_FAULT_FETCH: | ||||
| call_trapsignal(td, SIGBUS, BUS_ADRERR, (void *)frame->tf_sepc, | call_trapsignal(td, SIGBUS, BUS_ADRERR, (void *)frame->tf_sepc, | ||||
| exception); | exception); | ||||
| userret(td, frame); | userret(td, frame); | ||||
| break; | break; | ||||
| case EXCP_STORE_PAGE_FAULT: | case EXCP_STORE_PAGE_FAULT: | ||||
| case EXCP_LOAD_PAGE_FAULT: | case EXCP_LOAD_PAGE_FAULT: | ||||
| case EXCP_INST_PAGE_FAULT: | case EXCP_INST_PAGE_FAULT: | ||||
| data_abort(frame, 1); | page_fault_handler(frame, 1); | ||||
| break; | break; | ||||
| case EXCP_USER_ECALL: | case EXCP_USER_ECALL: | ||||
| frame->tf_sepc += 4; /* Next instruction */ | frame->tf_sepc += 4; /* Next instruction */ | ||||
| svc_handler(frame); | ecall_handler(frame); | ||||
| break; | break; | ||||
| case EXCP_ILLEGAL_INSTRUCTION: | case EXCP_ILLEGAL_INSTRUCTION: | ||||
| #ifdef FPE | #ifdef FPE | ||||
| if ((pcb->pcb_fpflags & PCB_FP_STARTED) == 0) { | if ((pcb->pcb_fpflags & PCB_FP_STARTED) == 0) { | ||||
| /* | /* | ||||
| * May be a FPE trap. Enable FPE usage | * May be a FPE trap. Enable FPE usage | ||||
| * for this thread and try again. | * for this thread and try again. | ||||
| */ | */ | ||||
| Show All 22 Lines | |||||