diff options
| -rw-r--r-- | gdb/ChangeLog | 3 | ||||
| -rw-r--r-- | gdb/i387-tdep.c | 23 |
2 files changed, 8 insertions, 18 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 87761f7..fad9d4a 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,8 @@ 2001-10-28 Mark Kettenis <kettenis@gnu.org> + * i387-tdep.c (print_i387_value): Use extract_typed_floating to + convert RAW to a DOUBLEST instead of extract_floating. + * gdbtypes.c (_initialize_gdbtypes): Set floating-point type for builtin_type_i387_ext to floatformat_i387_ext. diff --git a/gdb/i387-tdep.c b/gdb/i387-tdep.c index 5842c00..bb69b80 100644 --- a/gdb/i387-tdep.c +++ b/gdb/i387-tdep.c @@ -165,25 +165,12 @@ static void print_i387_value (char *raw) { DOUBLEST value; - int len = TARGET_LONG_DOUBLE_BIT / TARGET_CHAR_BIT; - char *tmp = alloca (len); - /* This code only works on targets where ... */ - gdb_assert (TARGET_LONG_DOUBLE_FORMAT == &floatformat_i387_ext); - - /* Take care of the padding. FP reg is 80 bits. The same value in - memory is 96 bits. */ - gdb_assert (FPU_REG_RAW_SIZE < len); - memcpy (tmp, raw, FPU_REG_RAW_SIZE); - memset (tmp + FPU_REG_RAW_SIZE, 0, len - FPU_REG_RAW_SIZE); - - /* Extract the value as a DOUBLEST. */ - /* Use extract_floating() rather than floatformat_to_doublest(). - The latter is lossy in nature. Once GDB gets a host/target - independent and non-lossy FP it will become possible to bypass - extract_floating() and call floatformat*() directly. Note also - the assumptions about TARGET_LONG_DOUBLE above. */ - value = extract_floating (tmp, len); + /* Using extract_typed_floating here might affect the representation + of certain numbers such as NaNs, even if GDB is running natively. + This is fine since our caller already detects such special + numbers and we print the hexadecimal representation anyway. */ + value = extract_typed_floating (raw, builtin_type_i387_ext); /* We try to print 19 digits. The last digit may or may not contain garbage, but we'd better print one too many. We need enough room |