1 files changed, 47 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/sample/c32echo.c b/contrib/syslinux-4.02/sample/c32echo.c
new file mode 100644
index 0000000..cfde885
--- /dev/null
+++ b/contrib/syslinux-4.02/sample/c32echo.c
@@ -0,0 +1,47 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2002-2008 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * c32echo.c
+ *
+ * Simple COM32 program which only prints out its own command line
+ */
+
+#include <com32.h>
+
+#define NULL ((void *)0)
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+    asm volatile ("cld; rep; stosb":"+D" (buf), "+c"(len):"a"(ch):"memory");
+}
+
+int __start(void)
+{
+    com32sys_t inreg;
+    const char *p;
+
+    memset(&inreg, 0, sizeof inreg);
+    inreg.eax.b[1] = 0x02;	/* Write Character */
+
+    for (p = __com32.cs_cmdline; *p; p++) {
+	inreg.edx.b[0] = *p;
+	__com32.cs_intcall(0x21, &inreg, NULL);
+    }
+
+    inreg.edx.b[0] = '\r';
+    __com32.cs_intcall(0x21, &inreg, NULL);
+    inreg.edx.b[0] = '\n';
+    __com32.cs_intcall(0x21, &inreg, NULL);
+
+    return 0;
+}