mirror of
https://github.com/golang/go
synced 2024-10-04 16:21:22 -06:00
23bf408d41
R=r CC=golang-dev https://golang.org/cl/1021043
172 lines
3.4 KiB
Bash
Executable File
172 lines
3.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Generate Go code listing errors and other #defined constant
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# values (ENAMETOOLONG etc.), by asking the preprocessor
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# about the definitions.
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unset LANG
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export LC_ALL=C
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export LC_CTYPE=C
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case "$GOARCH" in
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arm)
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GCC=arm-gcc
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;;
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*)
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GCC=gcc
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;;
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esac
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uname=$(uname)
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includes_Linux='
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#define _FILE_OFFSET_BITS 64
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#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/epoll.h>
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#include <linux/ptrace.h>
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#include <linux/wait.h>
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'
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includes_Darwin='
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#define __DARWIN_UNIX03 0
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#define KERNEL
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#define _DARWIN_USE_64_BIT_INODE
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#include <sys/wait.h>
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#include <sys/event.h>
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'
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includes_FreeBSD='
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#include <sys/wait.h>
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#include <sys/event.h>
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'
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includes='
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#include <sys/types.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <sys/signal.h>
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#include <signal.h>
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'
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ccflags=""
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next=false
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for i
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do
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if $next; then
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ccflags="$ccflags $i"
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next=false
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elif [ "$i" = "-f" ]; then
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next=true
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fi
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done
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# Write godefs input.
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(
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indirect="includes_$(uname)"
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echo "${!indirect} $includes"
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echo
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echo 'enum {'
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# The gcc command line prints all the #defines
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# it encounters while processing the input
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echo "${!indirect} $includes" | $GCC -x c - -E -dM $ccflags |
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awk '
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$1 != "#define" || $2 ~ /\(/ {next}
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$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
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$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
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$2 ~ /^E[A-Z0-9_]+$/ ||
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$2 ~ /^SIG[^_]/ ||
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$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP)_/ ||
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$2 == "SOMAXCONN" ||
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$2 == "NAME_MAX" ||
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$2 ~ /^(O|F|FD|NAME|S|PTRACE)_/ ||
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$2 ~ /^W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", $2, $2)}
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$2 ~ /^__WCOREFLAG$/ {next}
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$2 ~ /^__W[A-Z0-9]+$/ {printf("\t$%s = %s,\n", substr($2,3), $2)}
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{next}
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' | sort
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echo '};'
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) >_const.c
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# Pull out just the error names for later.
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errors=$(
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echo '#include <errno.h>' | $GCC -x c - -E -dM $ccflags |
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awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
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sort
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)
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echo '// mkerrors.sh' "$@"
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echo '// MACHINE GENERATED BY THE COMMAND ABOVE; DO NOT EDIT'
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echo
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godefs -c $GCC "$@" -gsyscall "$@" _const.c
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# Run C program to print error strings.
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(
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/bin/echo "
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#include <stdio.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#define nelem(x) (sizeof(x)/sizeof((x)[0]))
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enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
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int errors[] = {
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"
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for i in $errors
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do
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/bin/echo ' '$i,
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done
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# Use /bin/echo to avoid builtin echo,
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# which interprets \n itself
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/bin/echo '
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};
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int
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main(void)
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{
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int i, j, e;
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char buf[1024];
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printf("\n\n// Error table\n");
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printf("var errors = [...]string {\n");
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for(i=0; i<nelem(errors); i++) {
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e = errors[i];
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for(j=0; j<i; j++)
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if(errors[j] == e) // duplicate value
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goto next;
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strcpy(buf, strerror(e));
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// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
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if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
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buf[0] += a - A;
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printf("\t%d: \"%s\",\n", e, buf);
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next:;
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}
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printf("}\n\n");
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return 0;
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}
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'
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) >_errors.c
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$GCC $ccflags -static -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.c
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