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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/ppc/math-emu/lfs.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/ppc/math-emu/lfs.c')
-rw-r--r--arch/ppc/math-emu/lfs.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/ppc/math-emu/lfs.c b/arch/ppc/math-emu/lfs.c
new file mode 100644
index 00000000000..c86dee3d765
--- /dev/null
+++ b/arch/ppc/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);
+}