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authorKumar Gala <galak@kernel.crashing.org>2006-03-28 09:43:27 +0400
committerKumar Gala <galak@kernel.crashing.org>2006-03-28 09:43:27 +0400
commit5cd272085bbc905532869f3e1fd18a7100496b56 (patch)
tree2c29f8a713e90fe55864502ed962c656014bca71 /arch/powerpc/math-emu/lfs.c
parentff2e6d7e27cf1f757ab0d97e1a9e46de47152a0e (diff)
downloadlinux-5cd272085bbc905532869f3e1fd18a7100496b56.tar.xz
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/lfs.c')
-rw-r--r--arch/powerpc/math-emu/lfs.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/lfs.c b/arch/powerpc/math-emu/lfs.c
new file mode 100644
index 000000000000..c86dee3d7655
--- /dev/null
+++ b/arch/powerpc/math-emu/lfs.c
@@ -0,0 +1,37 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+#include "single.h"
+
+int
+lfs(void *frD, void *ea)
+{
+ FP_DECL_D(R);
+ FP_DECL_S(A);
+ float f;
+
+#ifdef DEBUG
+ printk("%s: D %p, ea %p\n", __FUNCTION__, frD, ea);
+#endif
+
+ if (copy_from_user(&f, ea, sizeof(float)))
+ return -EFAULT;
+
+ __FP_UNPACK_S(A, &f);
+
+#ifdef DEBUG
+ printk("A: %ld %lu %ld (%ld) [%08lx]\n", A_s, A_f, A_e, A_c,
+ *(unsigned long *)&f);
+#endif
+
+ FP_CONV(D, S, 2, 1, R, A);
+
+#ifdef DEBUG
+ printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
+#endif
+
+ return __FP_PACK_D(frD, R);
+}