Differential D37255 Diff 112615 sys/arm64/arm64/trap.c

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sys/arm64/arm64/trap.c

Show First 20 Lines • Show All 236 Lines • ▼ Show 20 Lines	if (!lower && test_bs_fault((void *)frame->tf_elr)) {
return;		return;
}		}

print_registers(frame);		print_registers(frame);
print_gp_register("far", far);		print_gp_register("far", far);
panic("Unhandled EL%d external data abort", lower ? 0: 1);		panic("Unhandled EL%d external data abort", lower ? 0: 1);
}		}

static void		/*
		* It is unsafe to access the stack canary value stored in "td" until
		* kernel map translation faults are handled, see the pmap_klookup() call below.
		* Thus, stack-smashing detection with per-thread canaries must be disabled in
		* this function.
		*/
		static void NO_PERTHREAD_SSP
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)
{		{
struct vm_map *map;		struct vm_map *map;
struct pcb *pcb;		struct pcb *pcb;
vm_prot_t ftype;		vm_prot_t ftype;
int error, sig, ucode;		int error, sig, ucode;
#ifdef KDB		#ifdef KDB
▲ Show 20 Lines • Show All 191 Lines • ▼ Show 20 Lines	else if ((exception & ISS_FP_UFF) != 0)
code = FPE_FLTUND;		code = FPE_FLTUND;
else if ((exception & ISS_FP_IXF) != 0)		else if ((exception & ISS_FP_IXF) != 0)
code = FPE_FLTRES;		code = FPE_FLTRES;
}		}
call_trapsignal(td, SIGFPE, code, addr, exception);		call_trapsignal(td, SIGFPE, code, addr, exception);
}		}
#endif		#endif

void		/*
		* See the comment above data_abort().
		*/
		void NO_PERTHREAD_SSP
do_el1h_sync(struct thread td, struct trapframe frame)		do_el1h_sync(struct thread td, struct trapframe frame)
{		{
uint32_t exception;		uint32_t exception;
uint64_t esr, far;		uint64_t esr, far;
int dfsc;		int dfsc;

kasan_mark(frame, sizeof(frame), sizeof(frame), 0);		kasan_mark(frame, sizeof(frame), sizeof(frame), 0);

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