tests/fp/fp-test: add floating point tests

By leveraging berkeley's softfloat and testfloat.

With this we get decent coverage of softfloat.c:

$ ./fp-test -r even:	67.22% coverage
$ ./fp-test -r all:	73.11% coverage

Note that we do not yet test parts of softfloat.c that aren't
in the original softfloat library, namely:

- denormal inputs
- *_to_int16/uint16 conversions
- scalbn for fixed point
- muladd variants
- min/max
- exp2
- log2
- float*_compare (except float16_compare)
Signed-off-by: NEmilio G. Cota <cota@braap.org>
[rth: Add the new modules to git_submodules.]
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>

configure

@@ -296,6 +296,8 @@ if test -e "$source_path/.git"
 then
     git_update=yes
     git_submodules="ui/keycodemapdb"
+    git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
+    git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
 else
     git_update=no
     git_submodules=""
@@ -7449,12 +7451,14 @@ fi
 
 # build tree in object directory in case the source is not in the current directory
 DIRS="tests tests/tcg tests/tcg/cris tests/tcg/lm32 tests/libqos tests/qapi-schema tests/tcg/xtensa tests/qemu-iotests tests/vm"
+DIRS="$DIRS tests/fp"
 DIRS="$DIRS docs docs/interop fsdev scsi"
 DIRS="$DIRS pc-bios/optionrom pc-bios/spapr-rtas pc-bios/s390-ccw"
 DIRS="$DIRS roms/seabios roms/vgabios"
 FILES="Makefile tests/tcg/Makefile qdict-test-data.txt"
 FILES="$FILES tests/tcg/cris/Makefile tests/tcg/cris/.gdbinit"
 FILES="$FILES tests/tcg/lm32/Makefile tests/tcg/xtensa/Makefile po/Makefile"
+FILES="$FILES tests/fp/Makefile"
 FILES="$FILES pc-bios/optionrom/Makefile pc-bios/keymaps"
 FILES="$FILES pc-bios/spapr-rtas/Makefile"
 FILES="$FILES pc-bios/s390-ccw/Makefile"

tests/Makefile.include

@@ -670,6 +670,9 @@ tests/test-bufferiszero$(EXESUF): tests/test-bufferiszero.o $(test-util-obj-y)
 tests/atomic_add-bench$(EXESUF): tests/atomic_add-bench.o $(test-util-obj-y)
 tests/atomic64-bench$(EXESUF): tests/atomic64-bench.o $(test-util-obj-y)
 
+tests/fp/%:
+	$(MAKE) -C $(dir $@) $(notdir $@)
+
 tests/test-qdev-global-props$(EXESUF): tests/test-qdev-global-props.o \
 	hw/core/qdev.o hw/core/qdev-properties.o hw/core/hotplug.o\
 	hw/core/bus.o \

tests/fp/.gitignore

+fp-test

tests/fp/platform.h

+#ifndef QEMU_TESTFLOAT_PLATFORM_H
+#define QEMU_TESTFLOAT_PLATFORM_H
+/*
+ * Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of
+ * California.  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.
+ *
+ *  3. Neither the name of the University nor the names of its contributors may
+ *     be used to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "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 REGENTS 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.
+ */
+#include "config-host.h"
+
+#ifndef HOST_WORDS_BIGENDIAN
+#define LITTLEENDIAN 1
+/* otherwise do not define it */
+#endif
+
+#define INLINE static inline
+
+#endif /* QEMU_TESTFLOAT_PLATFORM_H */