diff options
Diffstat (limited to 'sys/ia64/ia64/machdep.c')
| -rw-r--r-- | sys/ia64/ia64/machdep.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sys/ia64/ia64/machdep.c b/sys/ia64/ia64/machdep.c index fab204a..7386ce3 100644 --- a/sys/ia64/ia64/machdep.c +++ b/sys/ia64/ia64/machdep.c @@ -149,6 +149,8 @@ vm_offset_t phys_avail[100]; /* must be 2 less so 0 0 can signal end of chunks */ #define PHYS_AVAIL_ARRAY_END ((sizeof(phys_avail) / sizeof(vm_offset_t)) - 2) +void mi_startup(void); /* XXX should be in a MI header */ + static void identifycpu(void); struct kva_md_info kmi; @@ -441,7 +443,7 @@ calculate_frequencies(void) } void -ia64_init(u_int64_t arg1, u_int64_t arg2) +ia64_init(void) { int phys_avail_cnt; vm_offset_t kernstart, kernend; @@ -762,6 +764,20 @@ ia64_init(u_int64_t arg1, u_int64_t arg2) } #endif ia64_set_tpr(0); + + /* + * Save our current context so that we have a known (maybe even + * sane) context as the initial context for new threads that are + * forked from us. If any of those threads (including thread0) + * does something wrong, we may be lucky and return here where + * we're ready for them with a nice panic. + */ + if (!savectx(thread0.td_pcb)) + mi_startup(); + + /* We should not get here. */ + panic("ia64_init: Whooaa there!"); + /* NOTREACHED */ } void |
