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author | Ben Cheng <bccheng@google.com> | 2013-03-28 11:14:20 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2013-03-28 12:40:33 -0700 |
commit | af0c51ac87ab2a87caa03fa108f0d164987a2764 (patch) | |
tree | 4b8b470f7c5b69642fdab8d0aa1fbc148d02196b /gcc-4.8/libgcc/mkmap-flat.awk | |
parent | d87cae247d39ebf4f5a6bf25c932a14d2fdb9384 (diff) | |
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[GCC 4.8] Initial check-in of GCC 4.8.0
Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771
Diffstat (limited to 'gcc-4.8/libgcc/mkmap-flat.awk')
-rw-r--r-- | gcc-4.8/libgcc/mkmap-flat.awk | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/gcc-4.8/libgcc/mkmap-flat.awk b/gcc-4.8/libgcc/mkmap-flat.awk new file mode 100644 index 000000000..fcf35bf88 --- /dev/null +++ b/gcc-4.8/libgcc/mkmap-flat.awk @@ -0,0 +1,103 @@ +# Generate a flat list of symbols to export. +# Copyright (C) 2007-2013 Free Software Foundation, Inc. +# Contributed by Richard Henderson <rth@cygnus.com> +# +# This file is part of GCC. +# +# GCC is free software; you can redistribute it and/or modify it under +# the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 3, or (at your option) any later +# version. +# +# GCC 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 General Public +# License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GCC; see the file COPYING3. If not see +# <http://www.gnu.org/licenses/>. + +# Options: +# "-v leading_underscore=1" : Symbols in map need leading underscore. +# "-v pe_dll=1" : Create .DEF file for Windows PECOFF +# DLL link instead of map file. + +BEGIN { + state = "nm"; + excluding = 0; + if (leading_underscore) + prefix = "_"; + else + prefix = ""; +} + +# Remove comment and blank lines. +/^ *#/ || /^ *$/ { + next; +} + +# We begin with nm input. Collect the set of symbols that are present +# so that we can elide undefined symbols. + +state == "nm" && /^%%/ { + state = "ver"; + next; +} + +state == "nm" && ($1 == "U" || $2 == "U") { + next; +} + +state == "nm" && NF == 3 { + def[$3] = 1; + next; +} + +state == "nm" { + next; +} + +# Now we process a simplified variant of the Solaris symbol version +# script. We have one symbol per line, no semicolons, simple markers +# for beginning and ending each section, and %inherit markers for +# describing version inheritance. A symbol may appear in more than +# one symbol version, and the last seen takes effect. +# The magic version name '%exclude' causes all the symbols given that +# version to be dropped from the output (unless a later version overrides). + +NF == 3 && $1 == "%inherit" { + next; +} + +NF == 2 && $2 == "{" { + if ($1 == "%exclude") + excluding = 1; + next; +} + +$1 == "}" { + excluding = 0; + next; +} + +{ + sym = prefix $1; + if (excluding) + delete export[sym]; + else + export[sym] = 1; + next; +} + +END { + + if (pe_dll) { + print "LIBRARY " pe_dll; + print "EXPORTS"; + } + + for (sym in export) + if (def[sym] || (pe_dll && def["_" sym])) + print sym; +} |