| #!/bin/sh | |
| ### | |
| # @file | |
| # Shell script to assemble and dump the fake Int10h handler from NASM source to | |
| # a C array. | |
| # | |
| # Copyright (C) 2020, Rebecca Cran <rebecca@bsdio.com> | |
| # 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' | sed 's/0x ,//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 |