blob: b95e62d2079cf472cebff4deacce893eab684003 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/* $Id: fcmpq.c,v 1.5 1999/05/28 13:43:33 jj Exp $
* arch/sparc64/math-emu/fcmpq.c
*
* Copyright (C) 1997, 1999 Jakub Jelinek (jj@ultra.linux.cz)
* Copyright (C) 1999 David S. Miller (davem@redhat.com)
*
*/
#include "sfp-util.h"
#include "soft-fp.h"
#include "quad.h"
int FCMPQ(void *rd, void *rs2, void *rs1)
{
FP_DECL_EX;
FP_DECL_Q(A); FP_DECL_Q(B);
long ret;
long fccno = (long)rd;
unsigned long fsr;
FP_UNPACK_RAW_QP(A, rs1);
FP_UNPACK_RAW_QP(B, rs2);
FP_CMP_Q(ret, B, A, 3);
if (ret == 3 && (FP_ISSIGNAN_Q(A) || FP_ISSIGNAN_Q(B)))
FP_SET_EXCEPTION(FP_EX_INVALID);
if (!FP_INHIBIT_RESULTS) {
rd = (void *)(((long)rd)&~3);
if (ret == -1) ret = 2;
fsr = current->tss.xfsr[0];
switch (fccno) {
case 0: fsr &= ~0xc00; fsr |= (ret << 10); break;
case 1: fsr &= ~0x300000000UL; fsr |= (ret << 32); break;
case 2: fsr &= ~0xc00000000UL; fsr |= (ret << 34); break;
case 3: fsr &= ~0x3000000000UL; fsr |= (ret << 36); break;
}
current->tss.xfsr[0] = fsr;
}
FP_HANDLE_EXCEPTIONS;
}
|
