100 lines
2.6 KiB
Awk
100 lines
2.6 KiB
Awk
#!/bin/gawk -f
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#
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# Copyright (c) 2015 Elvira Khabirova <lineprinter0@gmail.com>
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# Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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# Copyright (c) 2017 Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
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# Copyright (c) 2015-2018 The strace developers.
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# All rights reserved.
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#
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# SPDX-License-Identifier: LGPL-2.1-or-later
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BEGIN {
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dirmap[2^8] = "_IOC_NONE"
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dirmap[2^9] = "_IOC_READ"
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dirmap[2^10] = "_IOC_WRITE"
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dirmap[2^10 + 2^9] = "_IOC_READ|_IOC_WRITE"
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}
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function array_get(array_idx, array_member, \
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array_return)
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{
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array_return = array[array_idx][array_member]
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if ("" == array_return) {
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printf("%s: index [%s] without %s\n",
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FILENAME, array_idx, array_member) > "/dev/stderr"
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exit 1
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}
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return array_return
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}
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function dir2str(dir, \
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r) {
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r = dirmap[dir]
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if (r == "") {
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printf("%s: ioctl direction %d is not known\n",
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FILENAME, dir) > "/dev/stderr"
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exit 1
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}
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return r
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}
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/^<[[:xdigit:]]+>/ {
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match($0, /([[:alnum:]]+)><([[:alnum:]]+)/, matches)
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level = matches[1]
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idx = "0x" matches[2]
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parent[level] = idx
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}
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/^DW_AT_name/ {
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match($0, /:[[:space:]]+([[:alpha:]_][[:alnum:]_[:space:]]*)/,
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temparray)
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array[idx]["name"] = temparray[1]
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}
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/^DW_AT_type/ {
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match($0, /:[[:space:]]+<(0x[[:xdigit:]]*)>$/, temparray)
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array[idx]["type"] = temparray[1]
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}
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/^DW_AT_upper_bound/ {
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match($0, /[[:digit:]]+/, temparray)
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array[array[idx]["parent"]]["size"] = temparray[0]
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}
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/^DW_AT_count/ {
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match($0, /[[:digit:]]+/, temparray)
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array[array[idx]["parent"]]["size"] = temparray[0] - 1
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}
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/^Abbrev Number:[^(]+\(DW_TAG_/ {
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if (match($0, /member|subrange_type|variable/, temparray)) {
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array[idx]["special"] = temparray[0]
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if (level > 1 && ("member" == temparray[0] ||
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"subrange_type" == temparray[0]))
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array[idx]["parent"] = parent[level-1]
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}
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}
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END {
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for (i in array) {
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if (array[i]["special"] == "variable" &&
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index(array_get(i, "name"), "ioc_") == 1) {
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ioc_name = substr(array_get(i, "name"),
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length("ioc_") + 1)
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type = array_get(i, "type")
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delete sizemap
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for (j in array) {
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if ("parent" in array[j] &&
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type == array_get(j, "parent")) {
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t = array_get(j, "type")
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field_name = array_get(j, "name")
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sizemap[field_name] = \
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array_get(t, "size")
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}
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}
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if (sizemap["d"] == "" ||
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sizemap["n"] == "" ||
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sizemap["s"] == "") {
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printf("%s: failed to parse %s ioctl info\n",
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FILENAME, ioc_name) > "/dev/stderr"
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exit 1
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}
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printf("{ \"%s\", \"%s\", %s, 0x%04x, 0x%02x },\n",
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HEADER_NAME, ioc_name, dir2str(sizemap["d"]),
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sizemap["n"], sizemap["s"])
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}
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}
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}
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