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Differential D18511 Diff 52336 head/sys/arm64/arm64/trap.c

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head/sys/arm64/arm64/trap.c

Show First 20 Lines • Show All 143 Lines • ▼ Show 20 Linessvc_handler(struct thread *td, struct trapframe *frame)
} else { } else {
call_trapsignal(td, SIGILL, ILL_ILLOPN, (void *)frame->tf_elr); call_trapsignal(td, SIGILL, ILL_ILLOPN, (void *)frame->tf_elr);
userret(td, frame); userret(td, frame);
} }
} }
static void static void
data_abort(struct thread *td, struct trapframe *frame, uint64_t esr, data_abort(struct thread *td, struct trapframe *frame, uint64_t esr,
uint64_t far, int lower) uint64_t far, int lower, int exec)
{ {
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 #ifdef KDB
▲ Show 20 Lines • Show All 63 Lines • ▼ Show 20 Lines if (td->td_critnest != 0 || WITNESS_CHECK(WARN_SLEEPOK |
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);
panic("data abort in critical section or under mutex"); panic("data abort in critical section or under mutex");
} }
va = trunc_page(far); va = trunc_page(far);
ftype = ((esr >> 6) & 1) ? VM_PROT_READ | VM_PROT_WRITE : VM_PROT_READ; ftype = ((esr >> 6) & 1) ? VM_PROT_READ | VM_PROT_WRITE : VM_PROT_READ;
if (exec)
ftype |= VM_PROT_EXECUTE;
/* Fault in the page. */ /* Fault in the page. */
error = vm_fault(map, va, ftype, VM_FAULT_NORMAL); error = vm_fault(map, va, ftype, VM_FAULT_NORMAL);
if (error != KERN_SUCCESS) { if (error != KERN_SUCCESS) {
if (lower) { if (lower) {
sig = SIGSEGV; sig = SIGSEGV;
if (error == KERN_PROTECTION_FAILURE) if (error == KERN_PROTECTION_FAILURE)
ucode = SEGV_ACCERR; ucode = SEGV_ACCERR;
▲ Show 20 Lines • Show All 91 Lines • ▼ Show 20 Lines#endif
printf(" esr: %.8lx\n", esr); printf(" esr: %.8lx\n", esr);
panic("VFP exception in the kernel"); panic("VFP exception in the kernel");
} }
break; break;
case EXCP_INSN_ABORT: case EXCP_INSN_ABORT:
case EXCP_DATA_ABORT: case EXCP_DATA_ABORT:
far = READ_SPECIALREG(far_el1); far = READ_SPECIALREG(far_el1);
intr_enable(); intr_enable();
data_abort(td, frame, esr, far, 0); data_abort(td, frame, esr, far, 0,
exception == EXCP_INSN_ABORT);
break; break;
case EXCP_BRK: case EXCP_BRK:
#ifdef KDTRACE_HOOKS #ifdef KDTRACE_HOOKS
if ((esr & ESR_ELx_ISS_MASK) == 0x40d && \ if ((esr & ESR_ELx_ISS_MASK) == 0x40d && \
dtrace_invop_jump_addr != 0) { dtrace_invop_jump_addr != 0) {
dtrace_invop_jump_addr(frame); dtrace_invop_jump_addr(frame);
break; break;
} }
▲ Show 20 Lines • Show All 80 Lines • ▼ Show 20 Lines#endif
break; break;
case EXCP_SVC32: case EXCP_SVC32:
case EXCP_SVC64: case EXCP_SVC64:
svc_handler(td, frame); svc_handler(td, frame);
break; break;
case EXCP_INSN_ABORT_L: case EXCP_INSN_ABORT_L:
case EXCP_DATA_ABORT_L: case EXCP_DATA_ABORT_L:
case EXCP_DATA_ABORT: case EXCP_DATA_ABORT:
data_abort(td, frame, esr, far, 1); data_abort(td, frame, esr, far, 1,
exception == EXCP_INSN_ABORT_L);
break; break;
case EXCP_UNKNOWN: case EXCP_UNKNOWN:
if (!undef_insn(0, frame)) if (!undef_insn(0, frame))
call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)far); call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)far);
userret(td, frame); userret(td, frame);
break; break;
case EXCP_SP_ALIGN: case EXCP_SP_ALIGN:
call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sp); call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sp);
▲ Show 20 Lines • Show All 66 Lines • Show Last 20 Lines