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authorJan Kratochvil <jan.kratochvil@redhat.com>2011-01-03 13:11:06 +0000
committerJan Kratochvil <jan.kratochvil@redhat.com>2011-01-03 13:11:06 +0000
commitebedcab50d2c7699ced23f4cf4eae712c0a9ca40 (patch)
treef203ddc5ac237d64a2233448d8837045355078c0 /gdb/frame.c
parent42ea3d7a0895f6748f2f888d6e993bc0ba6cc013 (diff)
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* frame.c (get_prev_frame_1) <UNWIND_INNER_ID>: New variables this_pc_in_block, morestack_msym and morestack_name. Check for "__morestack" minimal symbol there. gdb/testsuite/ * gdb.base/morestack.exp: New file. * gdb.base/morestack.c: New file.
Diffstat (limited to 'gdb/frame.c')
-rw-r--r--gdb/frame.c24
1 files changed, 18 insertions, 6 deletions
diff --git a/gdb/frame.c b/gdb/frame.c
index e36ba91..87122cd 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -1502,14 +1502,26 @@ get_prev_frame_1 (struct frame_info *this_frame)
&& frame_id_inner (get_frame_arch (this_frame->next), this_id,
get_frame_id (this_frame->next)))
{
- if (frame_debug)
+ CORE_ADDR this_pc_in_block;
+ struct minimal_symbol *morestack_msym;
+ const char *morestack_name = NULL;
+
+ /* gcc -fsplit-stack __morestack can continue the stack anywhere. */
+ this_pc_in_block = get_frame_address_in_block (this_frame);
+ morestack_msym = lookup_minimal_symbol_by_pc (this_pc_in_block);
+ if (morestack_msym)
+ morestack_name = SYMBOL_LINKAGE_NAME (morestack_msym);
+ if (!morestack_name || strcmp (morestack_name, "__morestack") != 0)
{
- fprintf_unfiltered (gdb_stdlog, "-> ");
- fprint_frame (gdb_stdlog, NULL);
- fprintf_unfiltered (gdb_stdlog, " // this frame ID is inner }\n");
+ if (frame_debug)
+ {
+ fprintf_unfiltered (gdb_stdlog, "-> ");
+ fprint_frame (gdb_stdlog, NULL);
+ fprintf_unfiltered (gdb_stdlog, " // this frame ID is inner }\n");
+ }
+ this_frame->stop_reason = UNWIND_INNER_ID;
+ return NULL;
}
- this_frame->stop_reason = UNWIND_INNER_ID;
- return NULL;
}
/* Check that this and the next frame are not identical. If they