1 files changed, 42 insertions, 0 deletions
diff --git a/arch/ppc/math-emu/fmul.c b/arch/ppc/math-emu/fmul.c
new file mode 100644
index 000000000000..66c7e79aae2e
--- /dev/null
+++ b/arch/ppc/math-emu/fmul.c
@@ -0,0 +1,42 @@
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <asm/uaccess.h>
+
+#include "soft-fp.h"
+#include "double.h"
+
+int
+fmul(void *frD, void *frA, void *frB)
+{
+	FP_DECL_D(A);
+	FP_DECL_D(B);
+	FP_DECL_D(R);
+	int ret = 0;
+
+#ifdef DEBUG
+	printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB);
+#endif
+
+	__FP_UNPACK_D(A, frA);
+	__FP_UNPACK_D(B, frB);
+
+#ifdef DEBUG
+	printk("A: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
+	       A_s, A_f1, A_f0, A_e, A_c, A_f1, A_f0, A_e + 1023);
+	printk("B: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
+	       B_s, B_f1, B_f0, B_e, B_c, B_f1, B_f0, B_e + 1023);
+#endif
+
+	if ((A_c == FP_CLS_INF && B_c == FP_CLS_ZERO) ||
+	    (A_c == FP_CLS_ZERO && B_c == FP_CLS_INF))
+		ret |= EFLAG_VXIMZ;
+
+	FP_MUL_D(R, A, B);
+
+#ifdef DEBUG
+	printk("D: %ld %lu %lu %ld (%ld) [%08lx.%08lx %lx]\n",
+	       R_s, R_f1, R_f0, R_e, R_c, R_f1, R_f0, R_e + 1023);
+#endif
+
+	return (ret | __FP_PACK_D(frD, R));
+}