svn commit: r287031 - head/sys/arm64/arm64

[Andrew Turner]

Author: andrew
Date: Sun Aug 23 13:18:56 2015
New Revision: 287031
URL: https://svnweb.freebsd.org/changeset/base/287031

Log:
  Handle the breakpoint instruction in userland by sending a SIGTRAP signal.

Modified:
  head/sys/arm64/arm64/trap.c

Modified: head/sys/arm64/arm64/trap.c
==============================================================================
--- head/sys/arm64/arm64/trap.c	Sun Aug 23 08:22:00 2015	(r287030)
+++ head/sys/arm64/arm64/trap.c	Sun Aug 23 13:18:56 2015	(r287031)
@@ -327,6 +327,7 @@ el0_excp_unknown(struct trapframe *frame
 void
 do_el0_sync(struct trapframe *frame)
 {
+	struct thread *td;
 	uint32_t exception;
 	uint64_t esr;
 
@@ -368,6 +369,11 @@ do_el0_sync(struct trapframe *frame)
 	case EXCP_UNKNOWN:
 		el0_excp_unknown(frame);
 		break;
+	case EXCP_BRK:
+		td = curthread;
+		call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_elr);
+		userret(td, frame);
+		break;
 	default:
 		print_registers(frame);
 		panic("Unknown userland exception %x esr_el1 %lx\n", exception,