Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (67 commits)
  [PATCH] powerpc: Remove oprofile spinlock backtrace code
  [PATCH] powerpc: Add oprofile calltrace support to all powerpc cpus
  [PATCH] powerpc: Add oprofile calltrace support
  [PATCH] for_each_possible_cpu: ppc
  [PATCH] for_each_possible_cpu: powerpc
  [PATCH] lock PTE before updating it in 440/BookE page fault handler
  [PATCH] powerpc: Kill _machine and hard-coded platform numbers
  ppc: Fix compile error in arch/ppc/lib/strcase.c
  [PATCH] git-powerpc: WARN was a dumb idea
  [PATCH] powerpc: a couple of trivial compile warning fixes
  powerpc: remove OCP references
  powerpc: Make uImage default build output for MPC8540 ADS
  powerpc: move math-emu over to arch/powerpc
  powerpc: use memparse() for mem= command line parsing
  ppc: fix strncasecmp prototype
  [PATCH] powerpc: make ISA floppies work again
  [PATCH] powerpc: Fix some initcall return values
  [PATCH] powerpc: Workaround for pSeries RTAS bug
  [PATCH] spufs: fix __init/__exit annotations
  [PATCH] powerpc: add hvc backend for rtas
  ...

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 0000000..e87ca23
--- /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;
+}