Mario Limonciello
d1aaae2539
In order for pre-commit to be useful, everything needs to meet a common baseline. Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
59 lines
2.4 KiB
ArmAsm
59 lines
2.4 KiB
ArmAsm
/*
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* See the dyninst/COPYRIGHT file for copyright information.
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*
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* We provide the Paradyn Tools (below described as "Paradyn")
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* on an AS IS basis, and do not warrant its validity or performance.
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* We reserve the right to update, modify, or discontinue this
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* software at any time. We shall have no obligation to supply such
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* updates or modifications or any other form of support to you.
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*
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* By your use of Paradyn, you understand and agree that we (or any
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* other person or entity with proprietary rights in Paradyn) are
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* under no obligation to provide either maintenance services,
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* update services, notices of latent defects, or correction of
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* defects for Paradyn.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* This function is used to help support TLS when rewriting static binaries.
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* It is originally provided by the dynamic linker (which is unavailable to
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* static binaries). One TLS model is to call the function with a module
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* index in order to retrieve a TLS variable (see general dynamic). This model
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* is unnecessarily general for static binaries but does exist in some non-PIC
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* relocatable files. The GNU ld approach is to perform code transformations to
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* relax the TLS model. In order to keep the rewriter for static binaries
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* simple, the approach of emulating a call to ___tls_get_addr was used instead
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* of implementing these link-time code transformations.
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*/
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#if defined(DYNINST_RT_STATIC_LIB)
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.text
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.globl ___tls_get_addr
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.globl __tls_get_addr
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__tls_get_addr:
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___tls_get_addr:
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mov (%rdi), %rax /* Get the TLS offset of the variable */
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add %fs:0, %rax /* Get the absolute address of the variable */
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ret
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#endif
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.section .note.GNU-stack,"",@progbits
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