1 files changed, 88 insertions, 0 deletions
diff --git a/lib/libc/sparc64/fpu/fpu_reg.h b/lib/libc/sparc64/fpu/fpu_reg.h
new file mode 100644
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+++ b/lib/libc/sparc64/fpu/fpu_reg.h
@@ -0,0 +1,88 @@
+/*-
+ * Copyright (c) 2002 by Thomas Moestl <tmm@FreeBSD.org>.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _LIBC_SPARC64_FPU_FPU_REG_H_
+#define _LIBC_SPARC64_FPU_FPU_REG_H_
+
+/*
+ * These are not really of type char[]. They are are arrays of functions defined
+ * in fpu_reg.S; each array member loads/stores a certain fpu register of the
+ * given size.
+ */
+extern char __fpu_ld32[];
+extern char __fpu_st32[];
+extern char __fpu_ld64[];
+extern char __fpu_st64[];
+
+/* Size of the functions in the arrays. */
+#define	FPU_LD32_SZ	8
+#define	FPU_ST32_SZ	8
+#define	FPU_LD64_SZ	8
+#define	FPU_ST64_SZ	8
+
+/* Typedefs for convenient casts in the functions below. */
+typedef void (fp_ldst32_fn)(u_int32_t *);
+typedef void (fp_ldst64_fn)(u_int64_t *);
+
+/*
+ * These are the functions that are actually used in the fpu emulation code to
+ * access the fp registers. They are usually not used more than once, so
+ * cacheing needs not be done here.
+ */
+static __inline u_int32_t
+__fpu_getreg(int r)
+{
+	u_int32_t rv;
+
+	((fp_ldst32_fn *)&__fpu_st32[r * FPU_ST32_SZ])(&rv);
+	return (rv);
+}
+
+static __inline u_int64_t
+__fpu_getreg64(int r)
+{
+	u_int64_t rv;
+
+	((fp_ldst64_fn *)&__fpu_st64[(r >> 1) * FPU_ST64_SZ])(&rv);
+	return (rv);
+}
+
+static __inline void
+__fpu_setreg(int r, u_int32_t v)
+{
+
+	((fp_ldst32_fn *)&__fpu_ld32[r * FPU_LD32_SZ])(&v);
+}
+
+static __inline void
+__fpu_setreg64(int r, u_int64_t v)
+{
+
+	((fp_ldst64_fn *)&__fpu_ld64[(r >> 1) * FPU_LD64_SZ])(&v);
+}
+
+#endif /* _LIBC_SPARC64_FPU_FPU_REG_H_ */