projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 8082d91e ZW |
1 | #! /bin/sh |
| 2 | # Test that glibc's signal numbers match the kernel's. | |
| 688903eb | 3 | # Copyright (C) 2017-2018 Free Software Foundation, Inc. |
| 8082d91e ZW |
4 | # This file is part of the GNU C Library. |
| 5 | ||
| 6 | # The GNU C Library is free software; you can redistribute it and/or | |
| 7 | # modify it under the terms of the GNU Lesser General Public | |
| 8 | # License as published by the Free Software Foundation; either | |
| 9 | # version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | # The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | # Lesser General Public License for more details. | |
| 15 | ||
| 16 | # You should have received a copy of the GNU Lesser General Public | |
| 17 | # License along with the GNU C Library; if not, see | |
| 18 | # <http://www.gnu.org/licenses/>. | |
| 19 | ||
| 20 | set -e | |
| 21 | if [ -n "$BASH_VERSION" ]; then set -o pipefail; fi | |
| 22 | LC_ALL=C; export LC_ALL | |
| 23 | ||
| 24 | # We cannot use Linux's asm/signal.h to define signal numbers, because | |
| 25 | # it isn't sufficiently namespace-clean. Instead, this test checks | |
| 26 | # that our signal numbers match the kernel's. This script expects | |
| 27 | # "$@" to be $(CC) $(CPPFLAGS) as set by glibc's Makefiles, and $AWK | |
| 28 | # to be set in the environment. | |
| 29 | ||
| 30 | # Before doing anything else, fail if the compiler doesn't work. | |
| 31 | "$@" -E -xc -dM - < /dev/null > /dev/null | |
| 32 | ||
| 33 | tmpG=`mktemp -t signums_glibc.XXXXXXXXX` | |
| 34 | tmpK=`mktemp -t signums_kernel.XXXXXXXXX` | |
| 35 | trap "rm -f '$tmpG' '$tmpK'" 0 | |
| 36 | ||
| 37 | # Filter out constants that aren't signal numbers. | |
| 38 | # If SIGPOLL is defined as SIGIO, swap it around so SIGIO is defined as | |
| 39 | # SIGPOLL. Similarly for SIGABRT and SIGIOT. | |
| 40 | # Discard obsolete signal numbers and unrelated constants: | |
| 41 | # SIGCLD, SIGIOT, SIGSWI, SIGUNUSED. | |
| 42 | # SIGSTKSZ, SIGRTMIN, SIGRTMAX. | |
| 43 | # Then sort the list. | |
| 44 | filter_defines () | |
| 45 | { | |
| 46 | $AWK ' | |
| 47 | /^#define SIG[A-Z]+ ([0-9]+|SIG[A-Z0-9]+)$/ { signals[$2] = $3 } | |
| 48 | END { | |
| 49 | if ("SIGPOLL" in signals && "SIGIO" in signals && | |
| 50 | signals["SIGPOLL"] == "SIGIO") { | |
| 51 | signals["SIGPOLL"] = signals["SIGIO"] | |
| 52 | signals["SIGIO"] = "SIGPOLL" | |
| 53 | } | |
| 54 | if ("SIGABRT" in signals && "SIGIOT" in signals && | |
| 55 | signals["SIGABRT"] == "SIGIOT") { | |
| 56 | signals["SIGABRT"] = signals["SIGIOT"] | |
| 57 | signals["SIGIOT"] = "SIGABRT" | |
| 58 | } | |
| 59 | for (sig in signals) { | |
| 60 | if (sig !~ /^SIG(CLD|IOT|RT(MIN|MAX)|STKSZ|SWI|UNUSED)$/) { | |
| 61 | printf("#define %s %s\n", sig, signals[sig]) | |
| 62 | } | |
| 63 | } | |
| 64 | }' | sort | |
| 65 | } | |
| 66 | ||
| 67 | # $CC may contain command-line switches, so it should be word-split. | |
| 68 | printf '%s' '#define _GNU_SOURCE 1 | |
| 69 | #include <signal.h> | |
| 70 | ' | | |
| 71 | "$@" -E -xc -dM - | | |
| 72 | filter_defines > "$tmpG" | |
| 73 | ||
| 74 | printf '%s' '#define _GNU_SOURCE 1 | |
| 75 | #define __ASSEMBLER__ 1 | |
| 76 | #include <asm/signal.h> | |
| 77 | ' | | |
| 78 | "$@" -E -xc -dM - | | |
| 79 | filter_defines > "$tmpK" | |
| 80 | ||
| 81 | if cmp -s "$tmpG" "$tmpK"; then | |
| 82 | exit 0 | |
| 83 | else | |
| 84 | diff -u "$tmpG" "$tmpK" | |
| 85 | exit 1 | |
| 86 | fi |