gdb/gdb-rhbz1420304-s390x-17of35.patch

43 lines
1.5 KiB
Diff

commit 07c9ca3bd8e6f83bcec49c922b52422c538f60f7
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date: Tue Jun 13 15:20:28 2017 +0200
write_pieced_value: Fix buffer offset for memory pieces
In write_pieced_value, when transferring the data to target memory via a
buffer, the bit offset within the target value is not reduced to its
sub-byte fraction before using it as a bit offset into the buffer. This
is fixed.
gdb/ChangeLog:
* dwarf2loc.c (write_pieced_value): In DWARF_VALUE_MEMORY,
truncate full bytes from dest_offset_bits before using it as an
offset into the buffer.
### a/gdb/ChangeLog
### b/gdb/ChangeLog
## -1,5 +1,11 @@
2017-06-13 Andreas Arnez <arnez@linux.vnet.ibm.com>
+ * dwarf2loc.c (write_pieced_value): In DWARF_VALUE_MEMORY,
+ truncate full bytes from dest_offset_bits before using it as an
+ offset into the buffer.
+
+2017-06-13 Andreas Arnez <arnez@linux.vnet.ibm.com>
+
* dwarf2loc.c (write_pieced_value): Include transfer size in
byte-wise check.
--- a/gdb/dwarf2loc.c
+++ b/gdb/dwarf2loc.c
@@ -2058,7 +2058,7 @@ write_pieced_value (struct value *to, struct value *from)
read_memory (p->v.mem.addr + dest_offset, buffer.data (), 1);
read_memory (p->v.mem.addr + dest_offset + this_size - 1,
&buffer[this_size - 1], 1);
- copy_bitwise (buffer.data (), dest_offset_bits,
+ copy_bitwise (buffer.data (), dest_offset_bits % 8,
contents, source_offset_bits,
this_size_bits,
bits_big_endian);