diff options
Diffstat (limited to 'gdb/dwarfread.c')
| -rw-r--r-- | gdb/dwarfread.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/gdb/dwarfread.c b/gdb/dwarfread.c index 2e52295..1cd34cd 100644 --- a/gdb/dwarfread.c +++ b/gdb/dwarfread.c @@ -856,7 +856,27 @@ struct_type (dip, thisdie, enddie, objfile) list -> field.name = savestring (mbr.at_name, strlen (mbr.at_name)); list -> field.type = decode_die_type (&mbr); list -> field.bitpos = 8 * locval (mbr.at_location); - list -> field.bitsize = 0; + /* Handle bit fields. */ + list -> field.bitsize = mbr.at_bit_size; +#if BITS_BIG_ENDIAN + /* For big endian bits, the at_bit_offset gives the additional + bit offset from the MSB of the containing anonymous object to + the MSB of the field. We don't have to do anything special + since we don't need to know the size of the anonymous object. */ + list -> field.bitpos += mbr.at_bit_offset; +#else + /* For little endian bits, we need to have a non-zero at_bit_size, + so that we know we are in fact dealing with a bitfield. Compute + the bit offset to the MSB of the anonymous object, subtract off + the number of bits from the MSB of the field to the MSB of the + object, and then subtract off the number of bits of the field + itself. The result is the bit offset of the LSB of the field. */ + if (mbr.at_bit_size > 0) + { + list -> field.bitpos += + mbr.at_byte_size * 8 - mbr.at_bit_offset - mbr.at_bit_size; + } +#endif nfields++; break; default: |