mirror of https://gitee.com/openkylin/linux.git
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Some debug functions
|
|
*
|
|
* MIPS floating point support
|
|
*
|
|
* Copyright (C) 1994-2000 Algorithmics Ltd.
|
|
*
|
|
* Nov 7, 2000
|
|
* Modified to build and operate in Linux kernel environment.
|
|
*
|
|
* Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
|
|
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/printk.h>
|
|
#include "ieee754.h"
|
|
#include "ieee754sp.h"
|
|
#include "ieee754dp.h"
|
|
|
|
union ieee754dp ieee754dp_dump(char *m, union ieee754dp x)
|
|
{
|
|
int i;
|
|
|
|
printk("%s", m);
|
|
printk("<%08x,%08x>\n", (unsigned) (x.bits >> 32),
|
|
(unsigned) x.bits);
|
|
printk("\t=");
|
|
switch (ieee754dp_class(x)) {
|
|
case IEEE754_CLASS_QNAN:
|
|
case IEEE754_CLASS_SNAN:
|
|
printk("Nan %c", DPSIGN(x) ? '-' : '+');
|
|
for (i = DP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
|
|
break;
|
|
case IEEE754_CLASS_INF:
|
|
printk("%cInfinity", DPSIGN(x) ? '-' : '+');
|
|
break;
|
|
case IEEE754_CLASS_ZERO:
|
|
printk("%cZero", DPSIGN(x) ? '-' : '+');
|
|
break;
|
|
case IEEE754_CLASS_DNORM:
|
|
printk("%c0.", DPSIGN(x) ? '-' : '+');
|
|
for (i = DP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
|
|
printk("e%d", DPBEXP(x) - DP_EBIAS);
|
|
break;
|
|
case IEEE754_CLASS_NORM:
|
|
printk("%c1.", DPSIGN(x) ? '-' : '+');
|
|
for (i = DP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0');
|
|
printk("e%d", DPBEXP(x) - DP_EBIAS);
|
|
break;
|
|
default:
|
|
printk("Illegal/Unknown IEEE754 value class");
|
|
}
|
|
printk("\n");
|
|
return x;
|
|
}
|
|
|
|
union ieee754sp ieee754sp_dump(char *m, union ieee754sp x)
|
|
{
|
|
int i;
|
|
|
|
printk("%s=", m);
|
|
printk("<%08x>\n", (unsigned) x.bits);
|
|
printk("\t=");
|
|
switch (ieee754sp_class(x)) {
|
|
case IEEE754_CLASS_QNAN:
|
|
case IEEE754_CLASS_SNAN:
|
|
printk("Nan %c", SPSIGN(x) ? '-' : '+');
|
|
for (i = SP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
|
|
break;
|
|
case IEEE754_CLASS_INF:
|
|
printk("%cInfinity", SPSIGN(x) ? '-' : '+');
|
|
break;
|
|
case IEEE754_CLASS_ZERO:
|
|
printk("%cZero", SPSIGN(x) ? '-' : '+');
|
|
break;
|
|
case IEEE754_CLASS_DNORM:
|
|
printk("%c0.", SPSIGN(x) ? '-' : '+');
|
|
for (i = SP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
|
|
printk("e%d", SPBEXP(x) - SP_EBIAS);
|
|
break;
|
|
case IEEE754_CLASS_NORM:
|
|
printk("%c1.", SPSIGN(x) ? '-' : '+');
|
|
for (i = SP_FBITS - 1; i >= 0; i--)
|
|
printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0');
|
|
printk("e%d", SPBEXP(x) - SP_EBIAS);
|
|
break;
|
|
default:
|
|
printk("Illegal/Unknown IEEE754 value class");
|
|
}
|
|
printk("\n");
|
|
return x;
|
|
}
|