6b13f685e
 김민수
BSP 최초 추가
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#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include <asm/sfp-machine.h>
#include <math-emu/soft-fp.h>
int
mtfsf(unsigned int FM, u32 *frB)
{
u32 mask;
u32 fpscr;
if (FM == 0)
return 0;
if (FM == 0xff)
mask = 0x9fffffff;
else {
mask = 0;
if (FM & (1 << 0))
mask |= 0x90000000;
if (FM & (1 << 1))
mask |= 0x0f000000;
if (FM & (1 << 2))
mask |= 0x00f00000;
if (FM & (1 << 3))
mask |= 0x000f0000;
if (FM & (1 << 4))
mask |= 0x0000f000;
if (FM & (1 << 5))
mask |= 0x00000f00;
if (FM & (1 << 6))
mask |= 0x000000f0;
if (FM & (1 << 7))
mask |= 0x0000000f;
}
__FPU_FPSCR &= ~(mask);
__FPU_FPSCR |= (frB[1] & mask);
__FPU_FPSCR &= ~(FPSCR_VX);
if (__FPU_FPSCR & (FPSCR_VXSNAN | FPSCR_VXISI | FPSCR_VXIDI |
FPSCR_VXZDZ | FPSCR_VXIMZ | FPSCR_VXVC |
FPSCR_VXSOFT | FPSCR_VXSQRT | FPSCR_VXCVI))
__FPU_FPSCR |= FPSCR_VX;
fpscr = __FPU_FPSCR;
fpscr &= ~(FPSCR_FEX);
if (((fpscr & FPSCR_VX) && (fpscr & FPSCR_VE)) ||
((fpscr & FPSCR_OX) && (fpscr & FPSCR_OE)) ||
((fpscr & FPSCR_UX) && (fpscr & FPSCR_UE)) ||
((fpscr & FPSCR_ZX) && (fpscr & FPSCR_ZE)) ||
((fpscr & FPSCR_XX) && (fpscr & FPSCR_XE)))
fpscr |= FPSCR_FEX;
__FPU_FPSCR = fpscr;
#ifdef DEBUG
printk("%s: %02x %p: %08lx
", __func__, FM, frB, __FPU_FPSCR);
#endif
return 0;
}
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