160 lines
4.4 KiB
Awk
160 lines
4.4 KiB
Awk
# Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public License
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# as published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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# You should have received a copy of the GNU Library General Public
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# License along with the GNU C Library; see the file COPYING.LIB. If not,
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# write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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# Boston, MA 02111-1307, USA.
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# errno.texinfo contains lines like:
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# @comment errno.h
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# @comment POSIX.1: Function not implemented
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# @deftypevr Macro int ENOSYS
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# @comment errno 123
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BEGIN {
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print "/* This file generated by errnos.awk. */";
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print "";
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print "/* The Hurd uses Mach error system 0x10, currently only subsystem 0. */";
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print "#ifndef _HURD_ERRNO";
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print "#define _HURD_ERRNO(n)\t((0x10 << 26) | ((n) & 0x3fff))";
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print "#endif";
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print "";
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print "#ifdef _ERRNO_H\n";
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print "enum __error_t_codes\n{";
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errnoh = 0;
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maxerrno = 0;
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in_mach_errors = "";
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in_math = 0;
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edom = erange = "";
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print "#undef EDOM\n#undef ERANGE";
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}
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$1 == "@comment" && $2 == "errno.h" { errnoh=1; next }
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$1 == "@comment" && errnoh == 1 \
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{
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++errnoh;
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etext = "";
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for (i = 3; i <= NF; ++i)
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etext = etext " " $i;
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next;
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}
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errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" \
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{ ++errnoh; e = $4; next; }
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errnoh == 3 && $1 == "@comment" && $2 == "errno" {
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if (e == "EWOULDBLOCK")
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{
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print "#define EWOULDBLOCK EAGAIN /* Operation would block */";
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next;
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}
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errno = $3 + 0;
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if (errno == 0)
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next;
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if (errno > maxerrno) maxerrno = errno;
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x = sprintf ("%-40s/*%s */", sprintf ("%-24s%s", "#define\t" e,
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"_HURD_ERRNO (" errno ")"),
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etext);
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if (e == "EDOM")
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edom = x;
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else if (e == "ERANGE")
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erange = x;
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printf "\t%-16s= _HURD_ERRNO (%d),\n", e, errno;
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print x;
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next;
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}
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{ errnoh=0 }
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NF == 3 && $1 == "#define" && $2 == "MACH_SEND_IN_PROGRESS" \
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{
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in_mach_errors = FILENAME;
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print "\n\t/* Errors from <mach/message.h>. */";
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}
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NF == 3 && $1 == "#define" && $2 == "KERN_SUCCESS" \
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{
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in_mach_errors = FILENAME;
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print "\n\t/* Errors from <mach/kern_return.h>. */";
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next;
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}
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in_mach_errors != "" && $2 == "MACH_IPC_COMPAT" \
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{
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in_mach_errors = "";
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}
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in_mach_errors == FILENAME && NF == 3 && $1 == "#define" \
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{
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printf "\t%-32s= %s,\n", "E" $2, $3;
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}
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$1 == "#define" && $2 == "_MACH_MIG_ERRORS_H_" \
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{
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in_mig_errors = 1;
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print "\n\t/* Errors from <mach/mig_errors.h>. */";
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next;
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}
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in_mig_errors && $1 == "#endif" && $3 == "_MACH_MIG_ERRORS_H_" \
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{
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in_mig_errors = 0;
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}
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(in_mig_errors && $1 == "#define" && $3 <= -300) || \
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(in_device_errors && $1 == "#define") \
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{
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printf "%-32s", sprintf ("\t%-24s= %s,", "E" $2, $3);
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for (i = 4; i <= NF; ++i)
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printf " %s", $i;
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printf "\n";
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}
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$1 == "#define" && $2 == "D_SUCCESS" \
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{
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in_device_errors = 1;
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print "\n\t/* Errors from <device/device_types.h>. */";
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next;
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}
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in_device_errors && $1 == "#endif" \
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{
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in_device_errors = 0;
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}
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END \
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{
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print "";
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print "};";
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print "";
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printf "#define\t_HURD_ERRNOS\t%d\n", maxerrno+1;
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print "";
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print "\
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/* User-visible type of error codes. It is ok to use `int' or\n\
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`kern_return_t' for these, but with `error_t' the debugger prints\n\
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symbolic values. */";
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print "#ifdef __USE_GNU";
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print "typedef enum __error_t_codes error_t;"
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print "#define __error_t_defined\t1"
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print "#endif";
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print "";
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print "/* errno is a per-thread variable. */";
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print "#include <hurd/threadvar.h>";
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print "#define errno (*__hurd_errno_location ())";
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print "#define __set_errno(val) errno = (val)";
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print "";
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print "#endif /* <errno.h> included. */";
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print "";
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print "#if !defined (_ERRNO_H) && defined (__need_Emath)";
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print edom; print erange;
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print "#endif /* <errno.h> not included and need math error codes. */";
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}
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