diff options
Diffstat (limited to 'gdb/value.c')
| -rw-r--r-- | gdb/value.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gdb/value.c b/gdb/value.c index 9cd9a2f..110d16d 100644 --- a/gdb/value.c +++ b/gdb/value.c @@ -3214,7 +3214,8 @@ value_fn_field (struct value **arg1p, struct fn_field *f, /* Unpack a bitfield of the specified FIELD_TYPE, from the object at VALADDR, and store the result in *RESULT. - The bitfield starts at BITPOS bits and contains BITSIZE bits. + The bitfield starts at BITPOS bits and contains BITSIZE bits; if + BITSIZE is zero, then the length is taken from FIELD_TYPE. Extracting bits depends on endianness of the machine. Compute the number of least significant bits to discard. For big endian machines, @@ -3244,7 +3245,10 @@ unpack_bits_as_long (struct type *field_type, const gdb_byte *valaddr, if (bitsize) bytes_read = ((bitpos % 8) + bitsize + 7) / 8; else - bytes_read = TYPE_LENGTH (field_type); + { + bytes_read = TYPE_LENGTH (field_type); + bitsize = 8 * bytes_read; + } read_offset = bitpos / 8; @@ -3262,7 +3266,7 @@ unpack_bits_as_long (struct type *field_type, const gdb_byte *valaddr, /* If the field does not entirely fill a LONGEST, then zero the sign bits. If the field is signed, and is negative, then sign extend. */ - if ((bitsize > 0) && (bitsize < 8 * (int) sizeof (val))) + if (bitsize < 8 * (int) sizeof (val)) { valmask = (((ULONGEST) 1) << bitsize) - 1; val &= valmask; |