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| author | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 22:34:58 +0200 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 22:34:58 +0200 |
| commit | 86579dd06deecfa6ac88d5e84e4d63c397cd6f6d (patch) | |
| tree | b4475d3ccde53015ad84a06e4e55e64591171b75 /arch/powerpc/math-emu/mtfsf.c | |
| parent | [GFS2] Update ioctl() to new interface (diff) | |
| parent | [PATCH] splice exports (diff) | |
| download | linux-86579dd06deecfa6ac88d5e84e4d63c397cd6f6d.tar.xz linux-86579dd06deecfa6ac88d5e84e4d63c397cd6f6d.zip | |
Merge branch 'master'
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; +} |