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- #!/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>
- #
- # SPDX-License-Identifier: BSD-2-Clause-Patent
- #
- ###
- 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
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