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# Copyright (C) 1991-1999,2002,2004 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 Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 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 # Lesser General Public License for more details. # You should have received a copy of the GNU Lesser General Public # License along with the GNU C Library; if not, write to the Free # Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA # 02111-1307 USA. # errno.texi contains lines like: # @comment errno.h # @comment POSIX.1: Function not implemented # @deftypevr Macro int ENOSYS # @comment errno 78 # Descriptive paragraph... # @end deftypevr BEGIN { # Here we list the E* names that might be duplicate names for the # same integer value on some systems. This causes the code below # to generate ``#if defined (ALIAS) && ALIAS != ORIGINAL'' in the code, # so the output does not presume that these are in fact aliases. # We list here all the known potential cases on any system, # so that the C source we produce will do the right thing based # on the actual #define'd values it's compiled with. alias["EWOULDBLOCK"]= "EAGAIN"; alias["EDEADLOCK"] = "EDEADLK"; alias["ENOTSUP"] = "EOPNOTSUPP"; print "/* This file is generated from errno.texi by errlist.awk. */" print ""; print "#include <errno.h>"; print "#include <libintl.h>"; print ""; print "#ifndef ERR_REMAP"; print "# define ERR_REMAP(n) n"; print "#endif"; print ""; print "#if !defined EMIT_ERR_MAX && !defined ERRLIST_NO_COMPAT"; print "# include <errlist-compat.h>"; print "#endif"; print "#ifdef ERR_MAX"; print "# define ERRLIST_SIZE ERR_MAX + 1"; print "#else" print "# define ERRLIST_SIZE"; print "#endif"; print "const char *const _sys_errlist_internal[ERRLIST_SIZE] ="; print " {"; print " [0] = N_(\"Success\")," } $1 == "@comment" && $2 == "errno.h" { errnoh=1; next } errnoh == 1 && $1 == "@comment" \ { ++errnoh; etext = $3; for (i = 4; i <= NF; ++i) etext = etext " " $i; next; } errnoh == 2 && $1 == "@deftypevr" && $2 == "Macro" && $3 == "int" \ { e = $4; errnoh++; next; } errnoh == 3 && $1 == "@comment" && $2 == "errno" \ { errno = $3 + 0; if (alias[e]) printf "#if defined (%s) && %s != %s\n", e, e, alias[e]; else printf "#ifdef %s\n", e; errnoh = 4; desc=""; next; } errnoh == 4 && $1 == "@end" && $2 == "deftypevr" \ { printf "/*%s */\n", desc; printf " [ERR_REMAP (%s)] = N_(\"%s\"),\n", e, etext; printf "# if %s > ERR_MAX\n", e; print "# undef ERR_MAX"; printf "# define ERR_MAX %s\n", e; print "# endif"; print "#endif"; errnoh = 0; next; } errnoh == 4 \ { # This magic tag in C comments gets them copied into libc.pot. desc = desc "\nTRANS " $0; next } { errnoh=0 } END { print " };"; print ""; print "const int _sys_nerr_internal"; print " = sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0];"; print ""; print "#if !defined NOT_IN_libc && !ERRLIST_NO_COMPAT"; print "# include <errlist-compat.c>"; print "#endif"; print ""; print "#ifdef EMIT_ERR_MAX"; print "void dummy (void)" print "{ asm volatile (\" @@@ %0 @@@ \" : : \"i\" (ERR_REMAP (ERR_MAX))); }" print "#endif"; }
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