fbc4ba4b4e
At some point in the past few years, binutils became more aggressive at removing unused symbols. To function as a symbol requirement, a relocation record must now be in a section marked with @progbits and must not be in a section which gets discarded during the link (either via --gc-sections or via /DISCARD/). Update REQUIRE_SYMBOL() to generate relocation records meeting these criteria. To minimise the impact upon the final binary size, we use existing symbols (specified via the REQUIRING_SYMBOL() macro) as the relocation targets where possible. We use R_386_NONE or R_X86_64_NONE relocation types to prevent any actual unwanted relocation taking place. Where no suitable symbol exists for REQUIRING_SYMBOL() (such as in config.c), the macro PROVIDE_REQUIRING_SYMBOL() can be used to generate a one-byte-long symbol to act as the relocation target. If there are versions of binutils for which this approach fails, then the fallback will probably involve killing off REQUEST_SYMBOL(), redefining REQUIRE_SYMBOL() to use the current definition of REQUEST_SYMBOL(), and postprocessing the linked ELF file with something along the lines of "nm -u | wc -l" to check that there are no undefined symbols remaining. Signed-off-by: Michael Brown <mcb30@ipxe.org>
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*
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* Copyright (C) 2012 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* 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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* General Public License for more details.
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*
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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, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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/** @file
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*
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* Self-test collection
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*
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*/
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/* Drag in all applicable self-tests */
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PROVIDE_REQUIRING_SYMBOL();
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REQUIRE_OBJECT ( memset_test );
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REQUIRE_OBJECT ( memcpy_test );
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REQUIRE_OBJECT ( string_test );
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REQUIRE_OBJECT ( math_test );
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REQUIRE_OBJECT ( vsprintf_test );
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REQUIRE_OBJECT ( list_test );
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REQUIRE_OBJECT ( byteswap_test );
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REQUIRE_OBJECT ( base64_test );
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REQUIRE_OBJECT ( base16_test );
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REQUIRE_OBJECT ( settings_test );
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REQUIRE_OBJECT ( time_test );
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REQUIRE_OBJECT ( tcpip_test );
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REQUIRE_OBJECT ( ipv4_test );
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REQUIRE_OBJECT ( ipv6_test );
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REQUIRE_OBJECT ( crc32_test );
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REQUIRE_OBJECT ( md5_test );
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REQUIRE_OBJECT ( sha1_test );
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REQUIRE_OBJECT ( sha256_test );
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REQUIRE_OBJECT ( aes_cbc_test );
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REQUIRE_OBJECT ( hmac_drbg_test );
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REQUIRE_OBJECT ( hash_df_test );
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REQUIRE_OBJECT ( bigint_test );
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REQUIRE_OBJECT ( rsa_test );
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REQUIRE_OBJECT ( x509_test );
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REQUIRE_OBJECT ( ocsp_test );
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REQUIRE_OBJECT ( cms_test );
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REQUIRE_OBJECT ( pnm_test );
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REQUIRE_OBJECT ( deflate_test );
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REQUIRE_OBJECT ( png_test );
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REQUIRE_OBJECT ( dns_test );
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REQUIRE_OBJECT ( uri_test );
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REQUIRE_OBJECT ( profile_test );
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