diff options
| -rw-r--r-- | i386/i386/trap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/i386/i386/trap.c b/i386/i386/trap.c index 200cbcc..9d4d43d 100644 --- a/i386/i386/trap.c +++ b/i386/i386/trap.c @@ -395,6 +395,11 @@ printf("user trap %d error %d sub %08x\n", type, code, subcode); return 0; } #endif /* MACH_KDB */ + /* Make the content of the debug status register (DR6) + available to user space. */ + if (thread->pcb) + thread->pcb->ims.ids.dr[6] = get_dr6() & 0x600F; + set_dr6(0); exc = EXC_BREAKPOINT; code = EXC_I386_SGL; break; |