Start of FFI implementation based on libffi.

* Makefile (OBJS): Add ffi.o.

* configure (have_libffi): New variable.
(gen_config_make): Generate have_libffi make variable.
New check for availability of libffi.

* ffi.c, ffi.h: New files.

* lib.c (init): Call ffi_init.

1 files changed, 51 insertions, 0 deletions

diff --git a/ffi.h b/ffi.h
new file mode 100644
index 00000000..1c437fd6
--- /dev/null
+++ b/ffi.h
@@ -0,0 +1,51 @@
+/* Copyright 2017
+ * Kaz Kylheku <kaz@kylheku.com>
+ * Vancouver, Canada
+ * 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
+ */
+
+extern val uint8_s, int8_s;
+extern val uint16_s, int16_s;
+extern val uint32_s, int32_s;
+extern val uint64_s, int64_s;
+
+extern val char_s, uchar_s;
+extern val short_s, ushort_s;
+extern val int_s, uint_s;
+extern val long_s, ulong_s;
+
+extern val float_s, double_s;
+
+extern val wstr_s;
+
+extern val ptr_in_s, ptr_out_s, ptr_in_out_s;
+
+extern val void_s;
+
+extern val ffi_type_s, ffi_call_desc_s;
+
+val ffi_type_compile(val syntax);
+val ffi_make_call_desc(val ntotal, val nfixed, val rettype, val argtypes);
+val ffi_call_wrap(val ffi_call_desc, val fptr, val args);
+void ffi_init(void);