1 #!/bin/sh 2 ### 3 # @file 4 # Shell script to assemble and dump the fake Int10h handler from NASM source to 5 # a C array. 6 # 7 # Copyright (C) 2014, Red Hat, Inc. 8 # Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR> 9 # 10 # This program and the accompanying materials are licensed and made available 11 # under the terms and conditions of the BSD License which accompanies this 12 # distribution. The full text of the license may be found at 13 # http://opensource.org/licenses/bsd-license.php 14 # 15 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT 16 # WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 17 # 18 ### 19 20 set -e -u 21 22 STEM=$(dirname -- "$0")/$(basename -- "$0" .sh) 23 24 # 25 # Install exit handler -- remove temporary files. 26 # 27 exit_handler() 28 { 29 rm -f -- "$STEM".bin "$STEM".disasm "$STEM".offsets "$STEM".insns \ 30 "$STEM".bytes 31 } 32 trap exit_handler EXIT 33 34 # 35 # Assemble the source file. 36 # 37 nasm -o "$STEM".bin -- "$STEM".asm 38 39 # 40 # Disassemble it, in order to get a binary dump associated with the source. 41 # (ndisasm doesn't recognize the "--" end-of-options delimiter.) 42 # 43 ndisasm "$STEM".bin >"$STEM".disasm 44 45 # 46 # Create three files, each with one column of the disassembly. 47 # 48 # The first column contains the offsets, and it starts the comment. 49 # 50 cut -c 1-8 -- "$STEM".disasm \ 51 | sed -e 's,^, /* ,' >"$STEM".offsets 52 53 # 54 # The second column contains the assembly-language instructions, and it closes 55 # the comment. We first pad it to 30 characters. 56 # 57 cut -c 29- -- "$STEM".disasm \ 58 | sed -e 's,$, ,' \ 59 -e 's,^\(.\{30\}\).*$,\1 */,' >"$STEM".insns 60 61 # 62 # The third column contains the bytes corresponding to the instruction, 63 # represented as C integer constants. First strip trailing whitespace from the 64 # middle column of the input disassembly, then process pairs of nibbles. 65 # 66 cut -c 11-28 -- "$STEM".disasm \ 67 | sed -e 's, \+$,,' -e 's/\(..\)/ 0x\1,/g' >"$STEM".bytes 68 69 # 70 # Write the output file, recombining the columns. The output should have CRLF 71 # line endings. 72 # 73 { 74 printf '//\n' 75 printf '// THIS FILE WAS GENERATED BY "%s". DO NOT EDIT.\n' \ 76 "$(basename -- "$0")" 77 printf '//\n' 78 printf '#ifndef _VBE_SHIM_H_\n' 79 printf '#define _VBE_SHIM_H_\n' 80 printf 'STATIC CONST UINT8 mVbeShim[] = {\n' 81 paste -d ' ' -- "$STEM".offsets "$STEM".insns "$STEM".bytes 82 printf '};\n' 83 printf '#endif\n' 84 } \ 85 | unix2dos >"$STEM".h 86
