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c4e648430f
Gold plugins may wish to further process an input file added by a plugin. For example, the plugin may need to assign a unique segment for sections in a plugin-generated input file. This patch adds a plugin callback that the linker will call when reading symbols from a new input file added after the all_symbols_read event (i.e. an input file added by a plugin). 2017-12-11 Stephen Crane <sjc@immunant.com> * plugin-api.h: Add new plugin hook to allow processing of input files added by a plugin. (ld_plugin_new_input_handler): New function hook type. (ld_plugin_register_new_input): New interface. (LDPT_REGISTER_NEW_INPUT_HOOK): New enum val. (tv_register_new_input): New member. * plugin.cc (Plugin::load): Include hooks for register_new_input in transfer vector. (Plugin::new_input): New function. (register_new_input): New function. (Plugin_manager::claim_file): Call Plugin::new_input if in replacement phase. * plugin.h (Plugin::set_new_input_handler): New function. * testsuite/plugin_new_section_layout.c: New plugin to test new_input plugin API. * testsuite/plugin_final_layout.sh: Add new input test. * testsuite/Makefile.am (plugin_layout_new_file): New test case. * testsuite/Makefile.in: Regenerate.
95 lines
2.5 KiB
Bash
Executable File
95 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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# plugin_final_layout.sh -- test
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# Copyright (C) 2011-2017 Free Software Foundation, Inc.
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# Written by Sriraman Tallam <tmsriram@google.com>.
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# This file is part of gold.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# This program 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
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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# The goal of this program is to verify if --section-ordering-file works as
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# intended. File plugin_final_layout.cc is in this test.
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set -e
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check()
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{
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awk "
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BEGIN { saw1 = 0; saw2 = 0; err = 0; }
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/.*$2\$/ { saw1 = 1; }
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/.*$3\$/ {
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saw2 = 1;
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if (!saw1)
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{
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printf \"layout of $2 and $3 is not right in file $1\\n\";
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err = 1;
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exit 1;
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}
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}
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END {
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if (!saw1 && !err)
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{
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printf \"did not see $2 in file $1\\n\";
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exit 1;
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}
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if (!saw2 && !err)
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{
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printf \"did not see $3 in file $1\\n\";
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exit 1;
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}
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}" $1
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}
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# With readelf -l, an ELF Section to Segment mapping is printed as :
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##############################################
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# Section to Segment mapping:
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# Segment Sections...
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# ...
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# 0x .text.plugin_created_unique
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# ...
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##############################################
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# Check of .text.plugin_created_unique is the only section in the segment.
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check_unique_segment()
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{
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awk "
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BEGIN { saw_section = 0; saw_unique = 0; }
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/$2/ { saw_section = 1; }
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/[ ]*0[0-9][ ]*$2[ ]*\$/ { saw_unique = 1; }
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END {
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if (!saw_section)
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{
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printf \"Section $2 not seen in output file $1\\n\";
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exit 1;
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}
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else if (!saw_unique)
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{
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printf \"Unique segment not seen for: $2 in file $1\\n\";
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exit 1;
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}
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}" $1
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}
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check plugin_final_layout.stdout "_Z3foov" "_Z3barv"
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check plugin_final_layout.stdout "_Z3barv" "_Z3bazv"
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check_unique_segment plugin_final_layout_readelf.stdout ".text.plugin_created_unique"
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check plugin_layout_new_file.stdout "_Z3foov" "_Z3barv"
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check plugin_layout_new_file.stdout "_Z3barv" "_Z3bazv"
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check_unique_segment plugin_layout_new_file_readelf.stdout ".text.plugin_created_unique"
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