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| author | Andrew Cagney <cagney@redhat.com> | 2004-11-09 01:16:42 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 2004-11-09 01:16:42 +0000 |
| commit | cbafadeb88b139e212f4e453a8f93304c813b2df (patch) | |
| tree | 39958aeb28a32b2b09ed71a4eabe0c968b27fc81 /gdb/frame.c | |
| parent | a77a9021ea85cf83d077a32391e682c6320adc88 (diff) | |
| download | gdb-cbafadeb88b139e212f4e453a8f93304c813b2df.zip gdb-cbafadeb88b139e212f4e453a8f93304c813b2df.tar.gz gdb-cbafadeb88b139e212f4e453a8f93304c813b2df.tar.bz2 | |
2004-11-08 Andrew Cagney <cagney@gnu.org>
* sentinel-frame.c (sentinel_frame_prev_pc): New function.
(sentinel_frame_unwinder): Add the prev_pc method.
* frame.c (frame_pc_unwind): Use the per-frame pc unwinder when
available. Do not handle the sentinel-frame case.
* frame-unwind.h (frame_prev_register_ftype): Define.
(struct frame_unwind): Add prev_pc;
Diffstat (limited to 'gdb/frame.c')
| -rw-r--r-- | gdb/frame.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/gdb/frame.c b/gdb/frame.c index d9de0e6..61a9520 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -390,7 +390,15 @@ frame_pc_unwind (struct frame_info *this_frame) if (!this_frame->prev_pc.p) { CORE_ADDR pc; - if (gdbarch_unwind_pc_p (current_gdbarch)) + if (this_frame->unwind == NULL) + this_frame->unwind + = frame_unwind_find_by_frame (this_frame->next, + &this_frame->prologue_cache); + if (this_frame->unwind->prev_pc != NULL) + /* A per-frame unwinder, prefer it. */ + pc = this_frame->unwind->prev_pc (this_frame->next, + &this_frame->prologue_cache); + else if (gdbarch_unwind_pc_p (current_gdbarch)) { /* The right way. The `pure' way. The one true way. This method depends solely on the register-unwind code to @@ -410,17 +418,8 @@ frame_pc_unwind (struct frame_info *this_frame) different ways that a PC could be unwound. */ pc = gdbarch_unwind_pc (current_gdbarch, this_frame); } - else if (this_frame->level < 0) - { - /* FIXME: cagney/2003-03-06: Old code and a sentinel - frame. Do like was always done. Fetch the PC's value - directly from the global registers array (via read_pc). - This assumes that this frame belongs to the current - global register cache. The assumption is dangerous. */ - pc = read_pc (); - } else - internal_error (__FILE__, __LINE__, "No gdbarch_unwind_pc method"); + internal_error (__FILE__, __LINE__, "No unwind_pc method"); this_frame->prev_pc.value = pc; this_frame->prev_pc.p = 1; if (frame_debug) |