1 files changed, 60 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/samples/entrydump.c b/contrib/syslinux-4.02/com32/samples/entrydump.c
new file mode 100644
index 0000000..d50859f
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/samples/entrydump.c
@@ -0,0 +1,60 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 2004-2008 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.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * entry.c
+ *
+ * Dump the entry point registers
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <inttypes.h>
+#include <console.h>
+#include <syslinux/config.h>
+
+struct stack_frame {
+    uint16_t gs, fs, es, ds;
+    uint32_t edi, esi, ebp, esp;
+    uint32_t ebx, edx, ecx, eax;
+    uint32_t eflags;
+    uint16_t ret_ip, ret_cs;
+    uint16_t pxe_ip, pxe_cs;
+};
+
+int main(void)
+{
+    const union syslinux_derivative_info *di;
+    const struct stack_frame *sf;
+
+    openconsole(&dev_null_r, &dev_stdcon_w);
+
+    di = syslinux_derivative_info();
+
+    if (di->c.filesystem != SYSLINUX_FS_PXELINUX) {
+	printf("Not running under PXELINUX (fs = %02x)\n", di->c.filesystem);
+	return 1;
+    }
+
+    sf = (const struct stack_frame *)di->pxe.stack;
+
+    printf("EAX: %08x  EBX: %08x  ECX: %08x  EDX: %08x\n"
+	   "ESP: %08x  EBP: %08x  ESI: %08x  EDI: %08x\n"
+	   "SS: %04x   DS: %04x   ES: %04x   FS: %04x   GS:  %04x\n"
+	   "EFLAGS: %08x   RET: %04x:%04x   PXE: %04x:%04x\n",
+	   sf->eax, sf->ebx, sf->ecx, sf->edx,
+	   sf->esp + 4, sf->ebp, sf->esi, sf->edi,
+	   di->rr.r.fs, sf->ds, sf->es, sf->fs, sf->gs,
+	   sf->eflags, sf->ret_cs, sf->ret_ip, sf->pxe_cs, sf->pxe_ip);
+
+    return 0;
+}