1 files changed, 95 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/cmenu/libmenu/syslnx.c b/contrib/syslinux-4.02/com32/cmenu/libmenu/syslnx.c
new file mode 100644
index 0000000..53e2401
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/cmenu/libmenu/syslnx.c
@@ -0,0 +1,95 @@
+/* -*- c -*- ------------------------------------------------------------- *
+ *
+ *   Copyright 2004-2005 Murali Krishnan Ganapathy - 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.
+ *
+ * ----------------------------------------------------------------------- */
+
+#include <string.h>
+#include <com32.h>
+#include "syslnx.h"
+
+com32sys_t inreg, outreg;	// Global registers for this module
+
+char issyslinux(void)
+{
+    REG_EAX(inreg) = 0x00003000;
+    REG_EBX(inreg) = REG_ECX(inreg) = REG_EDX(inreg) = 0xFFFFFFFF;
+    __intcall(0x21, &inreg, &outreg);
+    return (REG_EAX(outreg) == 0x59530000) &&
+	(REG_EBX(outreg) == 0x4c530000) &&
+	(REG_ECX(outreg) == 0x4e490000) && (REG_EDX(outreg) == 0x58550000);
+}
+
+void runsyslinuxcmd(const char *cmd)
+{
+    strcpy(__com32.cs_bounce, cmd);
+    REG_AX(inreg) = 0x0003;	// Run command
+    REG_BX(inreg) = OFFS(__com32.cs_bounce);
+    REG_ES(inreg) = SEG(__com32.cs_bounce);
+    __intcall(0x22, &inreg, &outreg);
+}
+
+void gototxtmode(void)
+{
+    REG_AX(inreg) = 0x0005;
+    __intcall(0x22, &inreg, &outreg);
+}
+
+void syslinux_idle(void)
+{
+    REG_AX(inreg) = 0x0013;
+    __intcall(0x22, &inreg, &outreg);
+}
+
+unsigned int getversion(char *deriv, unsigned int *numfun)
+{
+    REG_AX(inreg) = 0x0001;
+    __intcall(0x22, &inreg, &outreg);
+    if (deriv)
+	*deriv = REG_DL(outreg);
+    if (numfun)
+	*numfun = REG_AX(outreg);
+    return REG_CX(outreg);
+}
+
+void runsyslinuximage(const char *cmd, long ipappend)
+{
+    unsigned int numfun = 0;
+    char *ptr, *cmdline;
+
+    (void)ipappend;		// XXX: Unused?!
+
+    getversion(NULL, &numfun);
+    // Function 16h not supported Fall back to runcommand
+    if (numfun < 0x16)
+	runsyslinuxcmd(cmd);
+    // Try the Run Kernel Image function
+    // Split command line into
+    strcpy(__com32.cs_bounce, cmd);
+    ptr = __com32.cs_bounce;
+    // serach for first space or end of string
+    while ((*ptr) && (*ptr != ' '))
+	ptr++;
+    if (!*ptr)
+	cmdline = ptr;		// no command line
+    else {
+	*ptr++ = '\0';		// terminate kernal name
+	cmdline = ptr + 1;
+	while (*cmdline != ' ')
+	    cmdline++;		// find first non-space
+    }
+    // Now call the interrupt
+    REG_BX(inreg) = OFFS(cmdline);
+    REG_ES(inreg) = SEG(cmdline);
+    REG_SI(inreg) = OFFS(__com32.cs_bounce);
+    REG_DS(inreg) = SEG(__com32.cs_bounce);
+    REG_EDX(inreg) = 0;
+
+    __intcall(0x22, &inreg, &outreg);	// If successful does not return
+}