[patch] soft-fp fma/fmaf on sh [BZ #13304]

[Kaz Kojima <kkojima at rr dot iij4u dot or dot jp>]

Hi,

The attached patch is to implement soft-fp fma/fmaf on sh based on
its arm implementation.  I'm going to commit it on next week.

Regards,
	kaz
--
	[BZ #13304]
	* sysdeps/sh/s_fma.c: New file.
	* sysdeps/sh/s_fmaf.c: New file.
	* sysdeps/sh/soft-fp/sfp-machine.h: New file.  Based on arm
	version.
	* sysdeps/sh/Implies: Add sh/soft-fp.

diff --git a/sysdeps/sh/Implies b/sysdeps/sh/Implies
index 780c4e2..1fdc53d 100644
--- a/sysdeps/sh/Implies
+++ b/sysdeps/sh/Implies
@@ -1,3 +1,4 @@
+sh/soft-fp
 wordsize-32
 ieee754/flt-32
 ieee754/dbl-64
diff --git a/sysdeps/sh/s_fma.c b/sysdeps/sh/s_fma.c
new file mode 100644
index 0000000..d92438d
--- /dev/null
+++ b/sysdeps/sh/s_fma.c
@@ -0,0 +1,5 @@
+#ifdef __SH_FPU_ANY__
+# include <sysdeps/ieee754/dbl-64/s_fma.c>
+#else
+# include <soft-fp/fmadf4.c>
+#endif
diff --git a/sysdeps/sh/s_fmaf.c b/sysdeps/sh/s_fmaf.c
new file mode 100644
index 0000000..3b811ae
--- /dev/null
+++ b/sysdeps/sh/s_fmaf.c
@@ -0,0 +1,5 @@
+#ifdef __SH_FPU_ANY__
+# include <sysdeps/ieee754/dbl-64/s_fmaf.c>
+#else
+# include <soft-fp/fmasf4.c>
+#endif
diff --git a/sysdeps/sh/soft-fp/sfp-machine.h b/sysdeps/sh/soft-fp/sfp-machine.h
new file mode 100644
index 0000000..9b90748
--- /dev/null
+++ b/sysdeps/sh/soft-fp/sfp-machine.h
@@ -0,0 +1,55 @@
+#define _FP_W_TYPE_SIZE		32
+#define _FP_W_TYPE		unsigned long
+#define _FP_WS_TYPE		signed long
+#define _FP_I_TYPE		long
+
+#define _FP_MUL_MEAT_S(R,X,Y)				\
+  _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_D(R,X,Y)				\
+  _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_Q(R,X,Y)				\
+  _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_MUL_MEAT_DW_S(R,X,Y)				\
+  _FP_MUL_MEAT_DW_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_DW_D(R,X,Y)				\
+  _FP_MUL_MEAT_DW_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
+#define _FP_MUL_MEAT_DW_Q(R,X,Y)				\
+  _FP_MUL_MEAT_DW_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
+
+#define _FP_DIV_MEAT_S(R,X,Y)	_FP_DIV_MEAT_1_loop(S,R,X,Y)
+#define _FP_DIV_MEAT_D(R,X,Y)	_FP_DIV_MEAT_2_udiv(D,R,X,Y)
+#define _FP_DIV_MEAT_Q(R,X,Y)	_FP_DIV_MEAT_4_udiv(Q,R,X,Y)
+
+#define _FP_NANFRAC_S		((_FP_QNANBIT_S << 1) - 1)
+#define _FP_NANFRAC_D		((_FP_QNANBIT_D << 1) - 1), -1
+#define _FP_NANFRAC_Q		((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
+#define _FP_NANSIGN_S		0
+#define _FP_NANSIGN_D		0
+#define _FP_NANSIGN_Q		0
+
+#define _FP_KEEPNANFRACP 1
+#define _FP_QNANNEGATEDP 0
+
+/* Someone please check this.  */
+#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)			\
+  do {								\
+    if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)		\
+	&& !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))	\
+      {								\
+	R##_s = Y##_s;						\
+	_FP_FRAC_COPY_##wc(R,Y);				\
+      }								\
+    else							\
+      {								\
+	R##_s = X##_s;						\
+	_FP_FRAC_COPY_##wc(R,X);				\
+      }								\
+    R##_c = FP_CLS_NAN;						\
+  } while (0)
+
+#define FP_EX_INVALID           (1 << 6)
+#define FP_EX_DIVZERO           (1 << 5)
+#define FP_EX_OVERFLOW          (1 << 4)
+#define FP_EX_UNDERFLOW         (1 << 3)
+#define FP_EX_INEXACT           (1 << 2)