diff options
Diffstat (limited to 'gdb/dwarf2')
| -rw-r--r-- | gdb/dwarf2/expr.c | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/gdb/dwarf2/expr.c b/gdb/dwarf2/expr.c index 2a1b851..ee1522b 100644 --- a/gdb/dwarf2/expr.c +++ b/gdb/dwarf2/expr.c @@ -211,14 +211,33 @@ rw_pieced_value (value *v, value *from, bool check_optimized) ULONGEST reg_bits = 8 * register_size (arch, gdb_regnum); int optim, unavail; - if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG - && p->offset + p->size < reg_bits) + if (p->offset + p->size < reg_bits) { - /* Big-endian, and we want less than full size. */ - bits_to_skip += reg_bits - (p->offset + p->size); + /* We want less than full size. */ + + if (p->op == DW_OP_piece) + { + gdb_assert (p->offset == 0); + + /* If the piece is located in a register, but does not + occupy the entire register, the placement of the piece + within that register is defined by the ABI. */ + bits_to_skip + += 8 * gdbarch_dwarf2_reg_piece_offset (arch, gdb_regnum, + p->size / 8); + } + else if (p->op == DW_OP_bit_piece) + { + /* If the location is a register, the offset is from the + least significant bit end of the register. */ + if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG) + bits_to_skip += reg_bits - (p->offset + p->size); + else + bits_to_skip += p->offset; + } + else + error (_("Don't know how to get part of implicit pointer")); } - else - bits_to_skip += p->offset; this_size = bits_to_bytes (bits_to_skip, this_size_bits); buffer.resize (this_size); |