Date: Fri, 25 Jul 2014 17:27:55 -0500 From: Stacey Son <sson@FreeBSD.org> To: Warner Losh <imp@bsdimp.com> Cc: David Chisnall <theraven@FreeBSD.org>, freebsd-mips@FreeBSD.org Subject: Re: mips64 ld GOT problem Message-ID: <C7869A0A-8CE6-4764-9AFD-A49C93E680C1@FreeBSD.org> In-Reply-To: <48935A3D-0387-42F1-ACF0-14EB7D8F9A06@bsdimp.com> References: <77F1DDA2-A4E5-4D64-AA43-F8CBC55249C4@me.com> <48935A3D-0387-42F1-ACF0-14EB7D8F9A06@bsdimp.com>
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Hi Warner... On Jul 25, 2014, at 11:26 AM, Warner Losh <imp@bsdimp.com> wrote: >=20 > On Jul 25, 2014, at 9:24 AM, Stacey Son <sson@me.com> wrote: >=20 >> Hi all: >>=20 >> I have been trying to bootstrap clang/llvm 3.5 for mips64 (i.e. cross = build clang/llvm 3.5 for mips64 using clang/llvm 3.5) but run into the = following linker problem (see below) in about the midway point as it is = trying to link 'opt'. The assertions that fail are the following: >>=20 >> BFD 2.17.50 [FreeBSD] 2007-07-03 assertion fail = /usr/home/sson/freebsd/gnu/usr.bin/binutils/libbfd/../../../../contrib/bin= utils/bfd/elfxx-mips.c:7455 >>=20 >> BFD_ASSERT (g->assigned_gotno - g->local_gotno >> <=3D g->global_gotno); >>=20 >> BFD 2.17.50 [FreeBSD] 2007-07-03 assertion fail = /usr/home/sson/freebsd/gnu/usr.bin/binutils/libbfd/../../../../contrib/bin= utils/bfd/elfxx-mips.c:2767 >>=20 >> /* There should have been enough room in the symbol table to >> accommodate both the GOT and non-GOT symbols. */ >> BFD_ASSERT (hsd.max_non_got_dynindx <=3D hsd.min_got_dynindx); >>=20 >> BFD 2.17.50 [FreeBSD] 2007-07-03 assertion fail = /usr/home/sson/freebsd/gnu/usr.bin/binutils/libbfd/../../../../contrib/bin= utils/bfd/elfxx-mips.c:10282 >>=20 >> /* Make sure we didn't grow the global .got region. */ >> dynobj =3D elf_hash_table (info)->dynobj; >> got =3D mips_elf_got_section (dynobj, FALSE); >> g =3D mips_elf_section_data (got)->u.got_info; >>=20 >> if (g->global_gotsym !=3D NULL) >> BFD_ASSERT ((elf_hash_table (info)->dynsymcount >> - g->global_gotsym->dynindx) >> <=3D g->global_gotno); >>=20 >> Does anyone have an idea for a work around or fix? >=20 > Silly question: does using the latest binutils fix this problem? Is there a stable port of the latest binutils to mips? Does someone = have some patches? I did tried TheRaven's port of the 2.18 binutils but = it seemed that 'ld' wasn't very happy. It didn't like any of the object = files I offered it. > Failing that, perhaps we need to specify a larger GOT region that we = do today? IIRC, that=92s specified with -g on the linker line, Try = adding =93-G0=94. I have a vague recollection we always used to do this, = but moved it to be a default (or maybe other systems have the default = and we still need to add it). It doesn=92t look like it is being added = from the output that you=92ve posted. IIRC, it has to be specified on = all the compiler invocations as well. Reading the man page implies -Gvalue/--gpsize=3Dvalue is only for ECOFF = binaries. I tried it anyway and it didn't seem to help. -stacey.=
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