Update copyright dates with scripts/update-copyrights.

[thirdparty/glibc.git] / sysdeps / gnu / errlist.awk

diff --git a/sysdeps/gnu/errlist.awk b/sysdeps/gnu/errlist.awk
index e6ca81a4adec35eb449dad2e366a053c81b9240c..2701c9fc0cfba51bc1d72bd15bd8ea6d2075ccdc 100644 (file)
--- a/sysdeps/gnu/errlist.awk
+++ b/sysdeps/gnu/errlist.awk
@@ -1,68 +1,110 @@
-# Copyright (C) 1991, 92, 93, 94, 95, 96 Free Software Foundation, Inc.
+# Copyright (C) 1991-2019 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.
+# 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
-# Library General Public License for more details.
+# Lesser 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.
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
 
-# errno.texinfo contains lines like:
-# @comment errno.h
-# @comment POSIX.1: Function not implemented
+# errno.texi contains lines like:
 # @deftypevr Macro int ENOSYS
-# @comment errno 78
+# @errno{ENOSYS, 78, Function not implemented}
+# Descriptive paragraph...
+# @end deftypevr
 
 BEGIN {
-    alias["EWOULDBLOCK"] = "EAGAIN";
-    alias["EDEADLOCK"] = "EDEADLK";
+
+    # 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 "const char *_sys_errlist[] =";
+
+    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 ERR_MAX 0";
+    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" \
+
+/^@errno\{/ \
   {
-    ++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;
+    etext = substr(etext, 1, length(etext)-1)
+    e = substr($1, 8, length($1)-8)
+    errno = substr($2, 1, length($2)-1) + 0
     if (alias[e])
       printf "#if defined (%s) && %s != %s\n", e, e, alias[e];
     else
       printf "#ifdef %s\n", e;
-    printf "    [%s] = N_(\"%s\"),\n", e, etext;
+    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=0 }
+errnoh == 4 \
+  {
+    # This magic tag in C comments gets them copied into libc.pot.
+    desc = desc "\nTRANS" ($0 != "" ? " " : "") $0; next
+  }
 END {
   print "  };";
   print "";
-  print "const int _sys_nerr = sizeof _sys_errlist / sizeof _sys_errlist[0];";
-  print "weak_alias (_sys_errlist, sys_errlist)";
-  print "weak_alias (_sys_nerr, sys_nerr)";
-  }
+  print "#define NERR \\";
+  print "  (sizeof _sys_errlist_internal / sizeof _sys_errlist_internal [0])";
+  print "const int _sys_nerr_internal = NERR;"
+  print "";
+  print "#if IS_IN (libc) && !defined 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";
+}