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- # Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
- # This file is part of the GNU C Library.
-
- # The GNU C Library is free software; you can redistribute it and/or
- # modify it under the terms of the GNU Library General Public License
- # as published by the Free Software Foundation; either version 2 of
- # the License, or (at your option) any later version.
-
- # The GNU C Library is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- # Library General Public License for more details.
-
- # You should have received a copy of the GNU Library General Public
- # License along with the GNU C Library; see the file COPYING.LIB. If
- # not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- # Cambridge, MA 02139, USA.
-
- # errno.texinfo contains lines like:
- # @comment errno.h
- # @comment POSIX.1: Function not implemented
- # @deftypevr Macro int ENOSYS
-
- BEGIN {
- printf "/* This file generated by";
- for (i = 0; i < ARGC; ++i)
- printf " %s", ARGV[i];
- printf ". */\n";
- print "";
- print "/* The Hurd uses Mach error system 0x10, currently only subsystem 0. */";
- print "#ifndef _HURD_ERRNO";
- print "#define _HURD_ERRNO(n)\t((0x10 << 26) | ((n) & 0x3fff))";
- print "#endif";
- print "";
- print "#ifdef _ERRNO_H\n";
- print "enum __error_t_codes\n{";
- errnoh = 0;
- maxerrno = 0;
- in_mach_errors = 0;
- in_math = 0;
- edom = erange = "";
- print "#undef EDOM\n#undef ERANGE";
- }
-
- $1 == "@comment" && $2 == "errno.h" { errnoh=1; next }
- $1 == "@comment" && errnoh == 1 \
- {
- ++errnoh;
- etext = "";
- for (i = 3; i <= NF; ++i)
- etext = etext " " $i;
- next;
- }
-
- errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" \
- { ++errnoh; e = $4; next; }
-
- errnoh == 3 && $1 == "@comment" && $2 == "errno" {
- errno = $3 + 0;
- if (errno > maxerrno) maxerrno = errno;
- if (e == "EWOULDBLOCK")
- {
- print "#define EWOULDBLOCK EAGAIN /* Operation would block */";
- next;
- }
- x = sprintf ("%-40s/*%s */", sprintf ("%-24s%s", "#define\t" e,
- "_HURD_ERRNO (" errno ")"),
- etext);
- if (e == "EDOM")
- edom = x;
- else if (e == "ERANGE")
- erange = x;
- printf "\t%-16s= _HURD_ERRNO (%d),\n", e, errno;
- print x;
- next;
- }
- { errnoh=0 }
-
- NF == 3 && $1 == "#define" && $2 == "MACH_SEND_IN_PROGRESS" \
- {
- in_mach_errors = 1;
- print "\n\t/* Errors from <mach/message.h>. */";
- }
- NF == 3 && $1 == "#define" && $2 == "KERN_SUCCESS" \
- {
- in_mach_errors = 1;
- print "\n\t/* Errors from <mach/kern_return.h>. */";
- next;
- }
-
- in_mach_errors && $2 == "MACH_IPC_COMPAT" \
- {
- in_mach_errors = 0;
- }
-
- in_mach_errors == 1 && NF == 3 && $1 == "#define" \
- {
- printf "\t%-32s= %s,\n", "E" $2, $3;
- }
-
- $1 == "#define" && $2 == "_MACH_MIG_ERRORS_H_" \
- {
- in_mig_errors = 1;
- print "\n\t/* Errors from <mach/mig_errors.h>. */";
- next;
- }
- in_mig_errors && $1 == "#endif" && $3 == "_MACH_MIG_ERRORS_H_" \
- {
- in_mig_errors = 0;
- }
-
- (in_mig_errors && $1 == "#define" && $3 <= -300) || \
- (in_device_errors && $1 == "#define") \
- {
- printf "%-32s", sprintf ("\t%-24s= %s,", "E" $2, $3);
- for (i = 4; i <= NF; ++i)
- printf " %s", $i;
- printf "\n";
- }
-
- $1 == "#define" && $2 == "D_SUCCESS" \
- {
- in_device_errors = 1;
- print "\n\t/* Errors from <device/device_types.h>. */";
- next;
- }
- in_device_errors && $1 == "#endif" \
- {
- in_device_errors = 0;
- }
-
-
- END \
- {
- print "";
- print "};";
- print "";
- printf "#define\t_HURD_ERRNOS\t%d\n", maxerrno+1;
- print "";
- print "\
- /* User-visible type of error codes. It is ok to use `int' or\n\
- `kern_return_t' for these, but with `error_t' the debugger prints\n\
- symbolic values. */";
- print "#ifdef __USE_GNU";
- print "typedef enum __error_t_codes error_t;"
- print "#endif";
- print "";
- print "/* errno is a per-thread variable. */";
- print "#include <hurd/threadvar.h>";
- print "#define errno (*__hurd_errno_location ())";
- print "";
- print "#endif /* <errno.h> included. */";
- print "";
- print "#if !defined (_ERRNO_H) && defined (__need_Emath)";
- print edom; print erange;
- print "#endif /* <errno.h> not included and need math error codes. */";
- }
-