android_kernel_xiaomi_sm8350/arch/ppc/math-emu/mtfsf.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

46 lines
752 B
C

#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include "soft-fp.h"
int
mtfsf(unsigned int FM, u32 *frB)
{
u32 mask;
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);
#ifdef DEBUG
printk("%s: %02x %p: %08lx\n", __FUNCTION__, FM, frB, __FPU_FPSCR);
#endif
return 0;
}