diff options
Diffstat (limited to 'arch/powerpc/math-emu/stfs.c')
-rw-r--r-- | arch/powerpc/math-emu/stfs.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/stfs.c b/arch/powerpc/math-emu/stfs.c new file mode 100644 index 00000000000..e87ca23c6dc --- /dev/null +++ b/arch/powerpc/math-emu/stfs.c @@ -0,0 +1,41 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" +#include "single.h" + +int +stfs(void *frS, void *ea) +{ + FP_DECL_D(A); + FP_DECL_S(R); + float f; + int err; + +#ifdef DEBUG + printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea); +#endif + + __FP_UNPACK_D(A, frS); + +#ifdef DEBUG + printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); +#endif + + FP_CONV(S, D, 1, 2, R, A); + +#ifdef DEBUG + printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c); +#endif + + err = _FP_PACK_CANONICAL(S, 1, R); + if (!err || !__FPU_TRAP_P(err)) { + __FP_PACK_RAW_1(S, &f, R); + if (copy_to_user(ea, &f, sizeof(float))) + return -EFAULT; + } + + return err; +} |