diff options
Diffstat (limited to 'gdb/valops.c')
-rw-r--r-- | gdb/valops.c | 63 |
1 files changed, 38 insertions, 25 deletions
diff --git a/gdb/valops.c b/gdb/valops.c index 455cf7d..6a9cbdc 100644 --- a/gdb/valops.c +++ b/gdb/valops.c @@ -331,6 +331,39 @@ value_cast_pointers (struct type *type, struct value *arg2, return arg2; } +/* See value.h. */ + +gdb_mpq +value_to_gdb_mpq (struct value *value) +{ + struct type *type = check_typedef (value_type (value)); + + gdb_mpq result; + if (is_floating_type (type)) + { + double d = target_float_to_host_double (value_contents (value), + type); + mpq_set_d (result.val, d); + } + else + { + gdb_assert (is_integral_type (type) + || is_fixed_point_type (type)); + + gdb_mpz vz; + vz.read (gdb::make_array_view (value_contents (value), + TYPE_LENGTH (type)), + type_byte_order (type), type->is_unsigned ()); + mpq_set_z (result.val, vz.val); + + if (is_fixed_point_type (type)) + mpq_mul (result.val, result.val, + type->fixed_point_scaling_factor ().val); + } + + return result; +} + /* Assuming that TO_TYPE is a fixed point type, return a value corresponding to the cast of FROM_VAL to that type. */ @@ -342,34 +375,14 @@ value_cast_to_fixed_point (struct type *to_type, struct value *from_val) if (from_type == to_type) return from_val; - gdb_mpq vq; - - /* Extract the value as a rational number. */ - - if (is_floating_type (from_type)) - { - double d = target_float_to_host_double (value_contents (from_val), - from_type); - mpq_set_d (vq.val, d); - } - - else if (is_integral_type (from_type) || is_fixed_point_type (from_type)) - { - gdb_mpz vz; - - vz.read (gdb::make_array_view (value_contents (from_val), - TYPE_LENGTH (from_type)), - type_byte_order (from_type), from_type->is_unsigned ()); - mpq_set_z (vq.val, vz.val); - - if (is_fixed_point_type (from_type)) - mpq_mul (vq.val, vq.val, from_type->fixed_point_scaling_factor ().val); - } - - else + if (!is_floating_type (from_type) + && !is_integral_type (from_type) + && !is_fixed_point_type (from_type)) error (_("Invalid conversion from type %s to fixed point type %s"), from_type->name (), to_type->name ()); + gdb_mpq vq = value_to_gdb_mpq (from_val); + /* Divide that value by the scaling factor to obtain the unscaled value, first in rational form, and then in integer form. */ |