Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / i386 / interface / pxe / pxe_exit_hook.c

diff --git a/qemu/roms/ipxe/src/arch/i386/interface/pxe/pxe_exit_hook.c b/qemu/roms/ipxe/src/arch/i386/interface/pxe/pxe_exit_hook.c
new file mode 100644 (file)
index 0000000..9d18965
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/i386/interface/pxe/pxe_exit_hook.c
@@ -0,0 +1,61 @@
+/** @file
+ *
+ * PXE exit hook
+ *
+ */
+
+/*
+ * Copyright (C) 2010 Shao Miller <shao.miller@yrdsb.edu.on.ca>.
+ *
+ * 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; either version 2 of the
+ * License, or any later version.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <realmode.h>
+#include <pxe.h>
+
+/** PXE exit hook */
+extern segoff_t __data16 ( pxe_exit_hook );
+#define pxe_exit_hook __use_data16 ( pxe_exit_hook )
+
+/**
+ * FILE EXIT HOOK
+ *
+ * @v file_exit_hook                   Pointer to a struct
+ *                                     s_PXENV_FILE_EXIT_HOOK
+ * @v s_PXENV_FILE_EXIT_HOOK::Hook     SEG16:OFF16 to jump to
+ * @ret #PXENV_EXIT_SUCCESS            Successfully set hook
+ * @ret #PXENV_EXIT_FAILURE            We're not an NBP build
+ * @ret s_PXENV_FILE_EXIT_HOOK::Status PXE status code
+ *
+ */
+static PXENV_EXIT_t
+pxenv_file_exit_hook ( struct s_PXENV_FILE_EXIT_HOOK *file_exit_hook ) {
+       DBG ( "PXENV_FILE_EXIT_HOOK" );
+
+       /* We'll jump to the specified SEG16:OFF16 during exit */
+       pxe_exit_hook.segment = file_exit_hook->Hook.segment;
+       pxe_exit_hook.offset = file_exit_hook->Hook.offset;
+       file_exit_hook->Status = PXENV_STATUS_SUCCESS;
+       return PXENV_EXIT_SUCCESS;
+}
+
+/** PXE file API */
+struct pxe_api_call pxe_file_api_exit_hook __pxe_api_call =
+       PXE_API_CALL ( PXENV_FILE_EXIT_HOOK, pxenv_file_exit_hook,
+                      struct s_PXENV_FILE_EXIT_HOOK );