1#!/bin/sh -e
2#
3# Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
4# Copyright (c) 2015-2018 The strace developers.
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15# 3. The name of the author may not be used to endorse or promote products
16#    derived from this software without specific prior written permission.
17#
18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28
29export LC_ALL=C
30
31MPERS_AWK="${0%/*}/mpers.awk"
32ARCH_FLAG=$1
33CC_ARCH_FLAG=$2
34PARSER_FILE=$3
35
36READELF="${READELF:-readelf}"
37CC="${CC-gcc}"
38CFLAGS="$CFLAGS -gdwarf-2 -c"
39CPP="${CPP-$CC -E}"
40CPPFLAGS="$CPPFLAGS -MM -MG"
41
42VAR_NAME='mpers_target_var'
43BITS_DIR="mpers-${ARCH_FLAG}"
44
45mkdir -p ${BITS_DIR}
46set -- $(sed -r -n \
47	's/^#[[:space:]]*include[[:space:]]+DEF_MPERS_TYPE\(([^)[:space:]]*)\)$/\1/p' \
48		"${PARSER_FILE}")
49for m_type; do
50	f_h="${BITS_DIR}/${m_type}.h"
51	f_c="${BITS_DIR}/${m_type}.c"
52	f_i="${BITS_DIR}/${m_type}.i"
53	f_o="${BITS_DIR}/${m_type}.o"
54	f_d1="${BITS_DIR}/${m_type}.d1"
55	f_d2="${BITS_DIR}/${m_type}.d2"
56	sed -e '
57		/DEF_MPERS_TYPE('"${m_type}"')$/n
58		/DEF_MPERS_TYPE/d
59		/^[[:space:]]*#[[:space:]]*include[[:space:]]*"xlat\//d
60		/^#[[:space:]]*include[[:space:]][[:space:]]*MPERS_DEFS$/ {s//'"${m_type} ${VAR_NAME}"';/;q}
61		' "${PARSER_FILE}" > "${f_c}"
62	$CPP $CPPFLAGS "${f_c}" > "${f_i}"
63	grep -F -q "${m_type}.h" "${f_i}" ||
64		continue
65	sed -i -e '/DEF_MPERS_TYPE/d' "${f_c}"
66	$CC $CFLAGS $CC_ARCH_FLAG "${f_c}" -o "${f_o}"
67	$READELF --debug-dump=info "${f_o}" > "${f_d1}"
68	sed -r -n '
69		/^[[:space:]]*<1>/,/^[[:space:]]*<1><[^>]+>: Abbrev Number: 0/!d
70		/^[[:space:]]*<[^>]*><[^>]*>: Abbrev Number: 0/d
71		s/^[[:space:]]*<[[:xdigit:]]+>[[:space:]]+//
72		s/^[[:space:]]*((<[[:xdigit:]]+>){2}):[[:space:]]+/\1\n/
73		s/[[:space:]]+$//
74		p' "${f_d1}" > "${f_d2}"
75	gawk -v VAR_NAME="$VAR_NAME" -v ARCH_FLAG="${ARCH_FLAG}" \
76		-f "$MPERS_AWK" "${f_d2}" > "${f_h}"
77done
78