diff options
| author | Andrew Cagney <cagney@redhat.com> | 2004-12-12 16:26:17 +0000 |
|---|---|---|
| committer | Andrew Cagney <cagney@redhat.com> | 2004-12-12 16:26:17 +0000 |
| commit | 39ee2ff0da5594221eb8fc5789e002a3b14df2f2 (patch) | |
| tree | fb1b6ad601398d6f01b6f681912cd16c6bc51722 /gdb | |
| parent | 91a533d47bb2463f9eac1d541e9ccf4b89bdd216 (diff) | |
| download | gdb-39ee2ff0da5594221eb8fc5789e002a3b14df2f2.zip gdb-39ee2ff0da5594221eb8fc5789e002a3b14df2f2.tar.gz gdb-39ee2ff0da5594221eb8fc5789e002a3b14df2f2.tar.bz2 | |
2004-12-12 Andrew Cagney <cagney@gnu.org>
* frame.c (get_prev_frame): When unwinding normal frames, check
that the PC isn't zero.
* hppa-tdep.c (hppa_stub_frame_unwind_cache): Delete check for a
zero PC.
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/frame.c | 12 | ||||
| -rw-r--r-- | gdb/hppa-tdep.c | 3 |
3 files changed, 17 insertions, 3 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 2b42da6..59161b4 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,10 @@ 2004-12-12 Andrew Cagney <cagney@gnu.org> + * frame.c (get_prev_frame): When unwinding normal frames, check + that the PC isn't zero. + * hppa-tdep.c (hppa_stub_frame_unwind_cache): Delete check for a + zero PC. + * MAINTAINERS: Reword description of what "Target Instruction Set Architectures" covers. diff --git a/gdb/frame.c b/gdb/frame.c index b229730..99ad24d 100644 --- a/gdb/frame.c +++ b/gdb/frame.c @@ -1257,6 +1257,18 @@ get_prev_frame (struct frame_info *this_frame) return NULL; } + /* Assume that the only way to get a zero PC is through something + like a SIGSEGV or a dummy frame, and hence that NORMAL frames + will never unwind a zero PC. */ + if (this_frame->level > 0 + && get_frame_type (this_frame) == NORMAL_FRAME + && get_frame_type (get_next_frame (this_frame)) == NORMAL_FRAME + && get_frame_pc (this_frame) == 0) + { + frame_debug_got_null_frame (gdb_stdlog, this_frame, "zero PC"); + return NULL; + } + return get_prev_frame_1 (this_frame); } diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c index b04b3c6..58fe249 100644 --- a/gdb/hppa-tdep.c +++ b/gdb/hppa-tdep.c @@ -2105,9 +2105,6 @@ hppa_stub_frame_unwind_cache (struct frame_info *next_frame, if (*this_cache) return *this_cache; - if (frame_pc_unwind (next_frame) == 0) - return NULL; - info = FRAME_OBSTACK_ZALLOC (struct hppa_stub_unwind_cache); *this_cache = info; info->saved_regs = trad_frame_alloc_saved_regs (next_frame); |