Differential D25770 Diff 75008 head/sys/riscv/riscv/trap.c

Changeset View

Standalone View

head/sys/riscv/riscv/trap.c

Show First 20 Lines • Show All 74 Lines • ▼ Show 20 Lines

extern register_t fsu_intr_fault;		extern register_t fsu_intr_fault;

/* Called from exception.S */		/* Called from exception.S */
void do_trap_supervisor(struct trapframe *);		void do_trap_supervisor(struct trapframe *);
void do_trap_user(struct trapframe *);		void do_trap_user(struct trapframe *);

static __inline void		static __inline void
call_trapsignal(struct thread td, int sig, int code, void addr)		call_trapsignal(struct thread td, int sig, int code, void addr, int trapno)
{		{
ksiginfo_t ksi;		ksiginfo_t ksi;

ksiginfo_init_trap(&ksi);		ksiginfo_init_trap(&ksi);
ksi.ksi_signo = sig;		ksi.ksi_signo = sig;
ksi.ksi_code = code;		ksi.ksi_code = code;
ksi.ksi_addr = addr;		ksi.ksi_addr = addr;
		ksi.ksi_trapno = trapno;
trapsignal(td, &ksi);		trapsignal(td, &ksi);
}		}

int		int
cpu_fetch_syscall_args(struct thread *td)		cpu_fetch_syscall_args(struct thread *td)
{		{
struct proc *p;		struct proc *p;
register_t *ap;		register_t *ap;
▲ Show 20 Lines • Show All 120 Lines • ▼ Show 20 Lines	#endif
}		}

if (pmap_fault_fixup(map->pmap, va, ftype))		if (pmap_fault_fixup(map->pmap, va, ftype))
goto done;		goto done;

error = vm_fault_trap(map, va, ftype, VM_FAULT_NORMAL, &sig, &ucode);		error = vm_fault_trap(map, va, ftype, VM_FAULT_NORMAL, &sig, &ucode);
if (error != KERN_SUCCESS) {		if (error != KERN_SUCCESS) {
if (usermode) {		if (usermode) {
call_trapsignal(td, sig, ucode, (void *)stval);		call_trapsignal(td, sig, ucode, (void *)stval,
		frame->tf_scause & EXCP_MASK);
} else {		} else {
if (pcb->pcb_onfault != 0) {		if (pcb->pcb_onfault != 0) {
frame->tf_a[0] = error;		frame->tf_a[0] = error;
frame->tf_sepc = pcb->pcb_onfault;		frame->tf_sepc = pcb->pcb_onfault;
return;		return;
}		}
goto fatal;		goto fatal;
}		}
▲ Show 20 Lines • Show All 112 Lines • ▼ Show 20 Lines	if ((pcb->pcb_fpflags & PCB_FP_STARTED) == 0) {
*/		*/
fpe_state_clear();		fpe_state_clear();
frame->tf_sstatus &= ~SSTATUS_FS_MASK;		frame->tf_sstatus &= ~SSTATUS_FS_MASK;
frame->tf_sstatus \|= SSTATUS_FS_CLEAN;		frame->tf_sstatus \|= SSTATUS_FS_CLEAN;
pcb->pcb_fpflags \|= PCB_FP_STARTED;		pcb->pcb_fpflags \|= PCB_FP_STARTED;
break;		break;
}		}
#endif		#endif
call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)frame->tf_sepc);		call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)frame->tf_sepc,
		exception);
userret(td, frame);		userret(td, frame);
break;		break;
case EXCP_BREAKPOINT:		case EXCP_BREAKPOINT:
call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_sepc);		call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_sepc,
		exception);
userret(td, frame);		userret(td, frame);
break;		break;
default:		default:
dump_regs(frame);		dump_regs(frame);
panic("Unknown userland exception %x, trap value %lx\n",		panic("Unknown userland exception %x, trap value %lx\n",
exception, frame->tf_stval);		exception, frame->tf_stval);
}		}
}		}