diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2006-03-28 07:43:27 +0200 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2006-03-28 07:43:27 +0200 |
| commit | 5cd272085bbc905532869f3e1fd18a7100496b56 (patch) | |
| tree | 2c29f8a713e90fe55864502ed962c656014bca71 /arch/powerpc/math-emu/mtfsf.c | |
| parent | powerpc: Fix goof in 6xx and POWER4 idle power-save functions (diff) | |
| download | linux-5cd272085bbc905532869f3e1fd18a7100496b56.tar.xz linux-5cd272085bbc905532869f3e1fd18a7100496b56.zip | |
powerpc: move math-emu over to arch/powerpc
Towards the goal of having arch/powerpc not build anything over in arch/ppc
move math-emu over. Also, killed some references to arch/ppc/ in the
arch/powerpc Makefile which should belong in drivers/ when the particular
sub-arch's move over to arch/powerpc.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/math-emu/mtfsf.c')
| -rw-r--r-- | arch/powerpc/math-emu/mtfsf.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/mtfsf.c b/arch/powerpc/math-emu/mtfsf.c new file mode 100644 index 000000000000..d70cf714994c --- /dev/null +++ b/arch/powerpc/math-emu/mtfsf.c @@ -0,0 +1,45 @@ +#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; +} |