xref: /linux/arch/powerpc/math-emu/mtfsfi.c (revision e58e871becec2d3b04ed91c0c16fe8deac9c9dfa)
1 #include <linux/types.h>
2 #include <linux/errno.h>
3 #include <linux/uaccess.h>
4 
5 #include <asm/sfp-machine.h>
6 #include <math-emu/soft-fp.h>
7 
8 int
9 mtfsfi(unsigned int crfD, unsigned int IMM)
10 {
11 	u32 mask = 0xf;
12 
13 	if (!crfD)
14 		mask = 9;
15 
16 	__FPU_FPSCR &= ~(mask << ((7 - crfD) << 2));
17 	__FPU_FPSCR |= (IMM & 0xf) << ((7 - crfD) << 2);
18 
19 #ifdef DEBUG
20 	printk("%s: %d %x: %08lx\n", __func__, crfD, IMM, __FPU_FPSCR);
21 #endif
22 
23 	return 0;
24 }
25