80 lines
2 KiB
Bash
80 lines
2 KiB
Bash
|
#!/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
|