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Oops. This is a part of Ian Dall's gdb-ns32k changes I forgot to commit.

This commit is contained in:
matthias 1998-03-19 22:06:40 +00:00
parent dd370f11a3
commit 01ecf0f5b8
1 changed files with 38 additions and 7 deletions
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45
gnu/dist/opcodes/ns32k-dis.c vendored
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@ -292,6 +292,37 @@ bit_extract (buffer, offset, count)
return result;
}
/* Like bit extract but the buffer is valid and doen't need to be
* fetched
*/
static int
bit_extract_simple (buffer, offset, count)
bfd_byte *buffer;
int offset;
int count;
{
int result;
int mask;
int bit;
buffer += offset >> 3;
offset &= 7;
bit = 1;
result = 0;
while (count--)
{
if ((*buffer & (1 << offset)))
result |= bit;
if (++offset == 8)
{
offset = 0;
buffer++;
}
bit <<= 1;
}
return result;
}
static void
bit_copy (buffer, offset, count, to)
char *buffer;
@ -807,14 +838,14 @@ int invalid_float(p, len)
register val;
if ( len == 4 )
val = (bit_extract(p, 23, 8)/*exponent*/ == 0xff
|| (bit_extract(p, 23, 8)/*exponent*/ == 0 &&
bit_extract(p, 0, 23)/*mantisa*/ != 0));
val = (bit_extract_simple(p, 23, 8)/*exponent*/ == 0xff
|| (bit_extract_simple(p, 23, 8)/*exponent*/ == 0 &&
bit_extract_simple(p, 0, 23)/*mantisa*/ != 0));
else if ( len == 8 )
val = (bit_extract(p, 52, 11)/*exponent*/ == 0x7ff
|| (bit_extract(p, 52, 11)/*exponent*/ == 0
&& (bit_extract(p, 0, 32)/*low mantisa*/ != 0
|| bit_extract(p, 32, 20)/*high mantisa*/ != 0)));
val = (bit_extract_simple(p, 52, 11)/*exponent*/ == 0x7ff
|| (bit_extract_simple(p, 52, 11)/*exponent*/ == 0
&& (bit_extract_simple(p, 0, 32)/*low mantisa*/ != 0
|| bit_extract_simple(p, 32, 20)/*high mantisa*/ != 0)));
else
val = 1;
return (val);