1 files changed, 85 insertions, 0 deletions
diff --git a/OvmfPkg/QemuVideoDxe/VbeShim.sh b/OvmfPkg/QemuVideoDxe/VbeShim.sh
new file mode 100755
index 000000000..7a6eba63a
--- /dev/null
+++ b/OvmfPkg/QemuVideoDxe/VbeShim.sh
@@ -0,0 +1,85 @@
+#!/bin/sh
+###
+# @file
+# Shell script to assemble and dump the fake Int10h handler from NASM source to
+# a C array.
+#
+# Copyright (C) 2014, Red Hat, Inc.
+# Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials are licensed and made available
+# under the terms and conditions of the BSD License which accompanies this
+# distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+# WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+###
+
+set -e -u
+
+STEM=$(dirname -- "$0")/$(basename -- "$0" .sh)
+
+#
+# Install exit handler -- remove temporary files.
+#
+exit_handler()
+{
+  rm -f -- "$STEM".bin "$STEM".disasm "$STEM".offsets "$STEM".insns \
+      "$STEM".bytes
+}
+trap exit_handler EXIT
+
+#
+# Assemble the source file.
+#
+nasm -o "$STEM".bin -- "$STEM".asm
+
+#
+# Disassemble it, in order to get a binary dump associated with the source.
+# (ndisasm doesn't recognize the "--" end-of-options delimiter.)
+#
+ndisasm "$STEM".bin >"$STEM".disasm
+
+#
+# Create three files, each with one column of the disassembly.
+#
+# The first column contains the offsets, and it starts the comment.
+#
+cut -c 1-8 -- "$STEM".disasm \
+| sed -e 's,^,  /* ,' >"$STEM".offsets
+
+#
+# The second column contains the assembly-language instructions, and it closes
+# the comment. We first pad it to 30 characters.
+#
+cut -c 29- -- "$STEM".disasm \
+| sed -e 's,$,                              ,' \
+      -e 's,^\(.\{30\}\).*$,\1 */,' >"$STEM".insns
+
+#
+# The third column contains the bytes corresponding to the instruction,
+# represented as C integer constants. First strip trailing whitespace from the
+# middle column of the input disassembly, then process pairs of nibbles.
+#
+cut -c 11-28 -- "$STEM".disasm \
+| sed -e 's, \+$,,' -e 's/\(..\)/ 0x\1,/g' >"$STEM".bytes
+
+#
+# Write the output file, recombining the columns. The output should have CRLF
+# line endings.
+#
+{
+  printf '//\n'
+  printf '// THIS FILE WAS GENERATED BY "%s". DO NOT EDIT.\n' \
+      "$(basename -- "$0")"
+  printf '//\n'
+  printf '#ifndef _VBE_SHIM_H_\n'
+  printf '#define _VBE_SHIM_H_\n'
+  printf 'STATIC CONST UINT8 mVbeShim[] = {\n'
+  paste -d ' ' -- "$STEM".offsets "$STEM".insns "$STEM".bytes
+  printf '};\n'
+  printf '#endif\n'
+} \
+| unix2dos >"$STEM".h