mtfsf.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * BK Id: SCCS/s.mtfsf.c 1.6 05/17/01 18:14:23 cort
- */
- #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: %08lxn", __FUNCTION__, FM, frB, __FPU_FPSCR);
- #endif
- return 0;
- }