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[PATCH 1/2] Handle DW_OP_GNU_implicit_pointer in dwarf assembler
DW_OP_GNU_implicit_pointer refers to a DIE with an offset of different
sizes in different dwarf versions. In v2, the size is the pointer size,
while in v3 and above, it is the ref_addr size. This patch fixes
dwarf assembler to emit the correct size of offset. We've already fixed
this size issue in gdb,
https://sourceware.org/ml/gdb-patches/2011-09/msg00451.html
gdb/testsuite:
2017-01-24 Yao Qi <yao.qi@linaro.org>
* lib/dwarf.exp (Dwarf::_location): Handle
DW_OP_GNU_implicit_pointer with proper size.
---
gdb/testsuite/lib/dwarf.exp | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/gdb/testsuite/lib/dwarf.exp b/gdb/testsuite/lib/dwarf.exp
index f7e4236..1883c86 100644
--- a/gdb/testsuite/lib/dwarf.exp
+++ b/gdb/testsuite/lib/dwarf.exp
@@ -845,6 +845,7 @@ namespace eval Dwarf {
proc _location {body} {
variable _constants
variable _cu_label
+ variable _cu_version
variable _cu_addr_size
variable _cu_offset_size
@@ -918,7 +919,11 @@ namespace eval Dwarf {
# Here label is a section offset.
set label [lindex $line 1]
- _op .${_cu_offset_size}byte $label
+ if { $_cu_version == 2 } {
+ _op .${_cu_addr_size}byte $label
+ } else {
+ _op .${_cu_offset_size}byte $label
+ }
_op .sleb128 [lindex $line 2]
}
--
1.9.1