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Commit | Line | Data |
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90803342 LE |
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 | # | |
b26f0cf9 | 10 | # SPDX-License-Identifier: BSD-2-Clause-Patent |
90803342 LE |
11 | # |
12 | ### | |
13 | ||
14 | set -e -u | |
15 | ||
16 | STEM=$(dirname -- "$0")/$(basename -- "$0" .sh) | |
17 | ||
18 | # | |
19 | # Install exit handler -- remove temporary files. | |
20 | # | |
21 | exit_handler() | |
22 | { | |
23 | rm -f -- "$STEM".bin "$STEM".disasm "$STEM".offsets "$STEM".insns \ | |
24 | "$STEM".bytes | |
25 | } | |
26 | trap exit_handler EXIT | |
27 | ||
28 | # | |
29 | # Assemble the source file. | |
30 | # | |
31 | nasm -o "$STEM".bin -- "$STEM".asm | |
32 | ||
33 | # | |
34 | # Disassemble it, in order to get a binary dump associated with the source. | |
35 | # (ndisasm doesn't recognize the "--" end-of-options delimiter.) | |
36 | # | |
37 | ndisasm "$STEM".bin >"$STEM".disasm | |
38 | ||
39 | # | |
40 | # Create three files, each with one column of the disassembly. | |
41 | # | |
42 | # The first column contains the offsets, and it starts the comment. | |
43 | # | |
44 | cut -c 1-8 -- "$STEM".disasm \ | |
45 | | sed -e 's,^, /* ,' >"$STEM".offsets | |
46 | ||
47 | # | |
48 | # The second column contains the assembly-language instructions, and it closes | |
49 | # the comment. We first pad it to 30 characters. | |
50 | # | |
51 | cut -c 29- -- "$STEM".disasm \ | |
52 | | sed -e 's,$, ,' \ | |
53 | -e 's,^\(.\{30\}\).*$,\1 */,' >"$STEM".insns | |
54 | ||
55 | # | |
56 | # The third column contains the bytes corresponding to the instruction, | |
57 | # represented as C integer constants. First strip trailing whitespace from the | |
58 | # middle column of the input disassembly, then process pairs of nibbles. | |
59 | # | |
60 | cut -c 11-28 -- "$STEM".disasm \ | |
61 | | sed -e 's, \+$,,' -e 's/\(..\)/ 0x\1,/g' >"$STEM".bytes | |
62 | ||
63 | # | |
64 | # Write the output file, recombining the columns. The output should have CRLF | |
65 | # line endings. | |
66 | # | |
67 | { | |
68 | printf '//\n' | |
69 | printf '// THIS FILE WAS GENERATED BY "%s". DO NOT EDIT.\n' \ | |
70 | "$(basename -- "$0")" | |
71 | printf '//\n' | |
72 | printf '#ifndef _VBE_SHIM_H_\n' | |
73 | printf '#define _VBE_SHIM_H_\n' | |
74 | printf 'STATIC CONST UINT8 mVbeShim[] = {\n' | |
75 | paste -d ' ' -- "$STEM".offsets "$STEM".insns "$STEM".bytes | |
76 | printf '};\n' | |
77 | printf '#endif\n' | |
78 | } \ | |
79 | | unix2dos >"$STEM".h |