1 files changed, 123 insertions, 0 deletions
diff --git a/deps/lightning/lib/jit_memory.c b/deps/lightning/lib/jit_memory.c
new file mode 100644
index 0000000..4d7f92d
--- /dev/null
+++ b/deps/lightning/lib/jit_memory.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2013-2019  Free Software Foundation, Inc.
+ *
+ * This file is part of GNU lightning.
+ *
+ * GNU lightning 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 3, or (at your option)
+ * any later version.
+ *
+ * GNU lightning 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.
+ *
+ * Authors:
+ *	Paulo Cesar Pereira de Andrade
+ */
+
+#include <lightning.h>
+#include <lightning/jit_private.h>
+#include <sys/mman.h>
+
+/*
+ * Prototypes
+ */
+static void *jit_default_alloc_func(size_t);
+static void *jit_default_realloc_func(void*, size_t);
+static void jit_default_free_func(void *);
+
+/*
+ * Initialization
+ */
+static jit_alloc_func_ptr jit_alloc_ptr = jit_default_alloc_func;
+static jit_realloc_func_ptr jit_realloc_ptr = jit_default_realloc_func;
+static jit_free_func_ptr jit_free_ptr = jit_default_free_func;
+
+/*
+ * Implementation
+ */
+jit_pointer_t
+jit_memcpy(jit_pointer_t dst, const void * src, jit_word_t size)
+{
+    if (size)
+	return (memcpy(dst, src, size));
+    return (dst);
+}
+
+jit_pointer_t
+jit_memmove(jit_pointer_t dst, const void *src , jit_word_t size)
+{
+    if (size)
+	return (memmove(dst, src, size));
+    return (dst);
+}
+
+void
+jit_set_memory_functions(jit_alloc_func_ptr alloc_ptr,
+			 jit_realloc_func_ptr realloc_ptr,
+			 jit_free_func_ptr free_ptr)
+{
+    if (alloc_ptr == NULL)
+	alloc_ptr = jit_default_alloc_func;
+    if (realloc_ptr == NULL)
+	realloc_ptr = jit_default_realloc_func;
+    if (free_ptr == NULL)
+	free_ptr = jit_default_free_func;
+    jit_alloc_ptr = alloc_ptr;
+    jit_realloc_ptr = realloc_ptr;
+    jit_free_ptr = free_ptr;
+}
+
+void
+jit_get_memory_functions(jit_alloc_func_ptr *alloc_ptr,
+			 jit_realloc_func_ptr *realloc_ptr,
+			 jit_free_func_ptr *free_ptr)
+{
+    *alloc_ptr = jit_alloc_ptr;
+    *realloc_ptr = jit_realloc_ptr;
+    *free_ptr = jit_free_ptr;
+}
+
+void
+jit_alloc(jit_pointer_t *ptr, jit_word_t size)
+{
+    *ptr = (*jit_alloc_ptr)(size);
+    memset(*ptr, 0, size);
+}
+
+void
+jit_realloc(jit_pointer_t *ptr, jit_word_t old_size, jit_word_t new_size)
+{
+    *ptr = (*jit_realloc_ptr)(*ptr, new_size);
+    if (old_size < new_size)
+	memset((jit_int8_t*)*ptr + old_size, 0, new_size - old_size);
+}
+
+void
+jit_free(jit_pointer_t *ptr)
+{
+    if (*ptr) {
+	(*jit_free_ptr)(*ptr);
+	*ptr = NULL;
+    }
+}
+
+static void *
+jit_default_alloc_func(size_t size)
+{
+    return (malloc(size));
+}
+
+static void *
+jit_default_realloc_func(void *ptr, size_t size)
+{
+    return (realloc(ptr, size));
+}
+
+static void
+jit_default_free_func(void *ptr)
+{
+    free(ptr);
+}