mirror of https://gitee.com/openkylin/linux.git
56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
|
#include <linux/types.h>
|
||
|
|
#include <linux/errno.h>
|
||
|
|
#include <asm/uaccess.h>
|
||
|
|
|
||
|
|
#include "soft-fp.h"
|
||
|
|
#include "double.h"
|
||
|
|
#include "single.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
fdivs(void *frD, void *frA, void *frB)
|
||
|
|
{
|
||
|
|
FP_DECL_D(A);
|
||
|
|
FP_DECL_D(B);
|
||
|
|
FP_DECL_D(R);
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
__FP_UNPACK_D(A, frA);
|
||
|
|
__FP_UNPACK_D(B, frB);
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
|
||
|
|
printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (A_c == FP_CLS_ZERO && B_c == FP_CLS_ZERO) {
|
||
|
|
ret |= EFLAG_VXZDZ;
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("%s: FPSCR_VXZDZ raised\n", __FUNCTION__);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
if (A_c == FP_CLS_INF && B_c == FP_CLS_INF) {
|
||
|
|
ret |= EFLAG_VXIDI;
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("%s: FPSCR_VXIDI raised\n", __FUNCTION__);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
if (B_c == FP_CLS_ZERO && A_c != FP_CLS_ZERO) {
|
||
|
|
ret |= EFLAG_DIVZERO;
|
||
|
|
if (__FPU_TRAP_P(EFLAG_DIVZERO))
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
FP_DIV_D(R, A, B);
|
||
|
|
|
||
|
|
#ifdef DEBUG
|
||
|
|
printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return (ret | __FP_PACK_DS(frD, R));
|
||
|
|
}
|