Adding quad float gcc intrinsic implementation for SPARC

Sparc-Gcc generates q_xxx intrinsic calls for quad float ("long double")
code. The routines from glibc's glibc-2.9/sysdeps/sparc/sparc32/soft-fp/*
where taken and ported to uclibc.

Signed-off-by: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: Austin Foxley <austinf@cetoncorp.com>

1 files changed, 205 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc/soft-fp/soft-fp.h b/libc/sysdeps/linux/sparc/soft-fp/soft-fp.h
new file mode 100644
index 000000000..40f0dbd54
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/soft-fp/soft-fp.h
@@ -0,0 +1,205 @@
+/* Software floating-point emulation.
+   Copyright (C) 1997,1998,1999,2000,2002,2003,2005,2006,2007
+	Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson (rth@cygnus.com),
+		  Jakub Jelinek (jj@ultra.linux.cz),
+		  David S. Miller (davem@redhat.com) and
+		  Peter Maydell (pmaydell@chiark.greenend.org.uk).
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   In addition to the permissions in the GNU Lesser General Public
+   License, the Free Software Foundation gives you unlimited
+   permission to link the compiled version of this file into
+   combinations with other programs, and to distribute those
+   combinations without any restriction coming from the use of this
+   file.  (The Lesser General Public License restrictions do apply in
+   other respects; for example, they cover modification of the file,
+   and distribution when not linked into a combine executable.)
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#ifndef SOFT_FP_H
+#define SOFT_FP_H
+
+#include "sfp-machine.h"
+
+/* Allow sfp-machine to have its own byte order definitions. */
+#ifndef __BYTE_ORDER
+#ifdef _LIBC
+#include <endian.h>
+#else
+#error "endianness not defined by sfp-machine.h"
+#endif
+#endif
+
+#define _FP_WORKBITS		3
+#define _FP_WORK_LSB		((_FP_W_TYPE)1 << 3)
+#define _FP_WORK_ROUND		((_FP_W_TYPE)1 << 2)
+#define _FP_WORK_GUARD		((_FP_W_TYPE)1 << 1)
+#define _FP_WORK_STICKY		((_FP_W_TYPE)1 << 0)
+
+#ifndef FP_RND_NEAREST
+# define FP_RND_NEAREST		0
+# define FP_RND_ZERO		1
+# define FP_RND_PINF		2
+# define FP_RND_MINF		3
+#endif
+#ifndef FP_ROUNDMODE
+# define FP_ROUNDMODE		FP_RND_NEAREST
+#endif
+
+/* By default don't care about exceptions. */
+#ifndef FP_EX_INVALID
+#define FP_EX_INVALID		0
+#endif
+#ifndef FP_EX_OVERFLOW
+#define FP_EX_OVERFLOW		0
+#endif
+#ifndef FP_EX_UNDERFLOW
+#define FP_EX_UNDERFLOW		0
+#endif
+#ifndef FP_EX_DIVZERO
+#define FP_EX_DIVZERO		0
+#endif
+#ifndef FP_EX_INEXACT
+#define FP_EX_INEXACT		0
+#endif
+#ifndef FP_EX_DENORM
+#define FP_EX_DENORM		0
+#endif
+
+#ifdef _FP_DECL_EX
+#define FP_DECL_EX					\
+  int _fex = 0;						\
+  _FP_DECL_EX
+#else
+#define FP_DECL_EX int _fex = 0
+#endif
+
+#ifndef FP_INIT_ROUNDMODE
+#define FP_INIT_ROUNDMODE do {} while (0)
+#endif
+
+#ifndef FP_HANDLE_EXCEPTIONS
+#define FP_HANDLE_EXCEPTIONS do {} while (0)
+#endif
+
+#ifndef FP_INHIBIT_RESULTS
+/* By default we write the results always.
+ * sfp-machine may override this and e.g.
+ * check if some exceptions are unmasked
+ * and inhibit it in such a case.
+ */
+#define FP_INHIBIT_RESULTS 0
+#endif
+
+#define FP_SET_EXCEPTION(ex)				\
+  _fex |= (ex)
+
+#define FP_UNSET_EXCEPTION(ex)				\
+  _fex &= ~(ex)
+
+#define FP_CLEAR_EXCEPTIONS				\
+  _fex = 0
+
+#define _FP_ROUND_NEAREST(wc, X)			\
+do {							\
+    if ((_FP_FRAC_LOW_##wc(X) & 15) != _FP_WORK_ROUND)	\
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND);		\
+} while (0)
+
+#define _FP_ROUND_ZERO(wc, X)		(void)0
+
+#define _FP_ROUND_PINF(wc, X)				\
+do {							\
+    if (!X##_s && (_FP_FRAC_LOW_##wc(X) & 7))		\
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);		\
+} while (0)
+
+#define _FP_ROUND_MINF(wc, X)				\
+do {							\
+    if (X##_s && (_FP_FRAC_LOW_##wc(X) & 7))		\
+      _FP_FRAC_ADDI_##wc(X, _FP_WORK_LSB);		\
+} while (0)
+
+#define _FP_ROUND(wc, X)			\
+do {						\
+	if (_FP_FRAC_LOW_##wc(X) & 7)		\
+	  FP_SET_EXCEPTION(FP_EX_INEXACT);	\
+	switch (FP_ROUNDMODE)			\
+	{					\
+	  case FP_RND_NEAREST:			\
+	    _FP_ROUND_NEAREST(wc,X);		\
+	    break;				\
+	  case FP_RND_ZERO:			\
+	    _FP_ROUND_ZERO(wc,X);		\
+	    break;				\
+	  case FP_RND_PINF:			\
+	    _FP_ROUND_PINF(wc,X);		\
+	    break;				\
+	  case FP_RND_MINF:			\
+	    _FP_ROUND_MINF(wc,X);		\
+	    break;				\
+	}					\
+} while (0)
+
+#define FP_CLS_NORMAL		0
+#define FP_CLS_ZERO		1
+#define FP_CLS_INF		2
+#define FP_CLS_NAN		3
+
+#define _FP_CLS_COMBINE(x,y)	(((x) << 2) | (y))
+
+#include "op-1.h"
+#include "op-2.h"
+#include "op-4.h"
+#include "op-8.h"
+#include "op-common.h"
+
+/* Sigh.  Silly things longlong.h needs.  */
+#define UWtype		_FP_W_TYPE
+#define W_TYPE_SIZE	_FP_W_TYPE_SIZE
+
+typedef int QItype __attribute__((mode(QI)));
+typedef int SItype __attribute__((mode(SI)));
+typedef int DItype __attribute__((mode(DI)));
+typedef unsigned int UQItype __attribute__((mode(QI)));
+typedef unsigned int USItype __attribute__((mode(SI)));
+typedef unsigned int UDItype __attribute__((mode(DI)));
+#if _FP_W_TYPE_SIZE == 32
+typedef unsigned int UHWtype __attribute__((mode(HI)));
+#elif _FP_W_TYPE_SIZE == 64
+typedef USItype UHWtype;
+#endif
+
+#ifndef CMPtype
+#define CMPtype		int
+#endif
+
+#define SI_BITS		(__CHAR_BIT__ * (int)sizeof(SItype))
+#define DI_BITS		(__CHAR_BIT__ * (int)sizeof(DItype))
+
+#ifndef umul_ppmm
+#include "longlong.h"
+#endif
+
+#ifdef _LIBC
+#include <stdlib.h>
+#else
+extern void abort (void);
+#endif
+
+#endif