1 files changed, 87 insertions, 0 deletions
diff --git a/sys/boot/i386/kgzldr/lib.c b/sys/boot/i386/kgzldr/lib.c
new file mode 100644
index 0000000..f763f31
--- /dev/null
+++ b/sys/boot/i386/kgzldr/lib.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 1999 Global Technology Associates, Inc.
+ * 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 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 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.
+ *
+ *	$Id:$
+ */
+
+#include <sys/types.h>
+#include <stddef.h>
+
+#include "kgzldr.h"
+
+#define MEMSIZ  0x8000		/* Memory pool size */
+
+int kgz_con;			/* Console control */
+
+static size_t memtot;		/* Memory allocated: bytes */
+static u_int memcnt;		/* Memory allocated: blocks */
+
+/*
+ * Library functions required by inflate().
+ */
+
+/*
+ * Allocate memory block.
+ */
+unsigned char *
+kzipmalloc(int size)
+{
+    static u_char mem[MEMSIZ];
+    void *ptr;
+
+    if (memtot + size > MEMSIZ)
+        return NULL;
+    ptr = mem + memtot;
+    memtot += size;
+    memcnt++;
+    return ptr;
+}
+
+/*
+ * Free allocated memory block.
+ */
+void
+kzipfree(void *ptr)
+{
+    memcnt--;
+    if (!memcnt)
+        memtot = 0;
+}
+
+/*
+ * Write a string to the console.
+ */
+void
+putstr(const char *str)
+{
+    int c;
+
+    while ((c = *str++)) {
+        if (kgz_con & KGZ_CRT)
+            crt_putchr(c);
+        if (kgz_con & KGZ_SIO)
+            sio_putchr(c);
+    }
+}