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Arm32: leave more .bfloat16 processing to common code

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With x86 support having been implemented by extending atof-ieee.c, avoid
unnecessary code duplication in md_atof(). This will then also allow to
take advantage of adjustments made there without needing to mirror them
here.
This commit is contained in:
Jan Beulich 2021-08-11 08:35:18 +02:00
parent bcd17d4f51
commit 2557e081af
1 changed files with 3 additions and 46 deletions
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49
gas/config/tc-arm.c
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@ -1247,55 +1247,12 @@ md_atof (int type, char * litP, int * sizeP)
{
case 'H':
case 'h':
/* bfloat16, despite not being part of the IEEE specification, can also
be handled by atof_ieee(). */
case 'b':
prec = 1;
break;
/* If this is a bfloat16, then parse it slightly differently, as it
does not follow the IEEE specification for floating point numbers
exactly. */
case 'b':
{
FLONUM_TYPE generic_float;
t = atof_ieee_detail (input_line_pointer, 1, 8, words, &generic_float);
if (t)
input_line_pointer = t;
else
return _("invalid floating point number");
switch (generic_float.sign)
{
/* Is +Inf. */
case 'P':
words[0] = 0x7f80;
break;
/* Is -Inf. */
case 'N':
words[0] = 0xff80;
break;
/* Is NaN. */
/* bfloat16 has two types of NaN - quiet and signalling.
Quiet NaN has bit[6] == 1 && faction != 0, whereas
signalling NaN's have bit[0] == 0 && fraction != 0.
Chosen this specific encoding as it is the same form
as used by other IEEE 754 encodings in GAS. */
case 0:
words[0] = 0x7fff;
break;
default:
break;
}
*sizeP = 2;
md_number_to_chars (litP, (valueT) words[0], sizeof (LITTLENUM_TYPE));
return NULL;
}
case 'f':
case 'F':
case 's':