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head/sys/arm64/arm64/trap.c
| Show First 20 Lines • Show All 150 Lines • ▼ Show 20 Lines | data_abort(struct thread *td, struct trapframe *frame, uint64_t esr, | ||||
| uint64_t far, int lower) | uint64_t far, int lower) | ||||
| { | { | ||||
| struct vm_map *map; | struct vm_map *map; | ||||
| struct proc *p; | struct proc *p; | ||||
| struct pcb *pcb; | struct pcb *pcb; | ||||
| vm_prot_t ftype; | vm_prot_t ftype; | ||||
| vm_offset_t va; | vm_offset_t va; | ||||
| int error, sig, ucode; | int error, sig, ucode; | ||||
| #ifdef KDB | |||||
| bool handled; | |||||
| #endif | |||||
| /* | /* | ||||
| * According to the ARMv8-A rev. A.g, B2.10.5 "Load-Exclusive | * According to the ARMv8-A rev. A.g, B2.10.5 "Load-Exclusive | ||||
| * and Store-Exclusive instruction usage restrictions", state | * and Store-Exclusive instruction usage restrictions", state | ||||
| * of the exclusive monitors after data abort exception is unknown. | * of the exclusive monitors after data abort exception is unknown. | ||||
| */ | */ | ||||
| clrex(); | clrex(); | ||||
| ▲ Show 20 Lines • Show All 54 Lines • ▼ Show 20 Lines | if (lower) { | ||||
| } | } | ||||
| printf("Fatal data abort:\n"); | printf("Fatal data abort:\n"); | ||||
| print_registers(frame); | print_registers(frame); | ||||
| printf(" far: %16lx\n", far); | printf(" far: %16lx\n", far); | ||||
| printf(" esr: %.8lx\n", esr); | printf(" esr: %.8lx\n", esr); | ||||
| #ifdef KDB | #ifdef KDB | ||||
| if (debugger_on_panic || kdb_active) | if (debugger_on_panic) { | ||||
| if (kdb_trap(ESR_ELx_EXCEPTION(esr), 0, frame)) | kdb_why = KDB_WHY_TRAP; | ||||
| handled = kdb_trap(ESR_ELx_EXCEPTION(esr), 0, | |||||
| frame); | |||||
| kdb_why = KDB_WHY_UNSET; | |||||
| if (handled) | |||||
| return; | return; | ||||
| } | |||||
| #endif | #endif | ||||
| panic("vm_fault failed: %lx", frame->tf_elr); | panic("vm_fault failed: %lx", frame->tf_elr); | ||||
| } | } | ||||
| } | } | ||||
| if (lower) | if (lower) | ||||
| userret(td, frame); | userret(td, frame); | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 215 Lines • Show Last 20 Lines | |||||