diff options
Diffstat (limited to 'sys/ia64')
| -rw-r--r-- | sys/ia64/ia64/machdep.c | 17 | ||||
| -rw-r--r-- | sys/ia64/include/pcb.h | 6 |
2 files changed, 22 insertions, 1 deletions
diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c index ca75d2c7ce40..5c39d05c8a36 100644 --- a/sys/ia64/ia64/machdep.c +++ b/sys/ia64/ia64/machdep.c @@ -1017,6 +1017,23 @@ freebsd4_sigreturn(struct thread *td, struct freebsd4_sigreturn_args *uap) } #endif +/* + * Construct a PCB from a trapframe. This is called from kdb_trap() where + * we want to start a backtrace from the function that caused us to enter + * the debugger. We have the context in the trapframe, but base the trace + * on the PCB. The PCB doesn't have to be perfect, as long as it contains + * enough for a backtrace. + */ +void +makectx(struct trapframe *tf, struct pcb *pcb) +{ + + pcb->pcb_special = tf->tf_special; + pcb->pcb_special.__spare = ~0UL; /* XXX see unwind.c */ + save_callee_saved(&pcb->pcb_preserved); + save_callee_saved_fp(&pcb->pcb_preserved_fp); +} + int get_mcontext(struct thread *td, mcontext_t *mc, int flags) { diff --git a/sys/ia64/include/pcb.h b/sys/ia64/include/pcb.h index 23d7e504c012..d018127561b7 100644 --- a/sys/ia64/include/pcb.h +++ b/sys/ia64/include/pcb.h @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2003 Doug Rabson + * Copyright (c) 2003,2004 Marcel Moolenaar * Copyright (c) 2000 Doug Rabson * All rights reserved. * @@ -59,6 +59,10 @@ struct pcb { #ifdef _KERNEL #define savectx(p) swapctx(p, NULL) + +struct trapframe; + +void makectx(struct trapframe *, struct pcb *); void restorectx(struct pcb *) __dead2; int swapctx(struct pcb *old, struct pcb *new); |