b2c6fcf986
use of `elf_getbase()` on non-archive members. This change is needed for gcc LTO (-flto) to work properly. * Style fix: paranthesize returned values. * Document the current behaviour of `elf_getbase()`. Tested by: gerald, Steve Kargl (original patch) Obtained from: elftoolchain MFC after: 3 days
72 lines
2.2 KiB
Groff
72 lines
2.2 KiB
Groff
.\" Copyright (c) 2006,2008,2010 Joseph Koshy. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" This software is provided by Joseph Koshy ``as is'' and
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.\" any express or implied warranties, including, but not limited to, the
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.\" implied warranties of merchantability and fitness for a particular purpose
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.\" are disclaimed. in no event shall Joseph Koshy be liable
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.\" for any direct, indirect, incidental, special, exemplary, or consequential
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.\" damages (including, but not limited to, procurement of substitute goods
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.\" or services; loss of use, data, or profits; or business interruption)
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.\" however caused and on any theory of liability, whether in contract, strict
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.\" liability, or tort (including negligence or otherwise) arising in any way
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.\" out of the use of this software, even if advised of the possibility of
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.\" such damage.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd June 6, 2010
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.Dt ELF_GETBASE 3
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.Os
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.Sh NAME
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.Nm elf_getbase
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.Nd get the base offset for an object file
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.Sh LIBRARY
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.Lb libelf
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.Sh SYNOPSIS
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.In libelf.h
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.Ft off_t
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.Fn elf_getbase "Elf *elf"
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.Sh DESCRIPTION
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Function
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.Fn elf_getbase
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returns the file offset to the first byte of the object referenced by ELF
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descriptor
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.Ar elf .
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.Pp
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For descriptors referencing members of archives, the returned offset is
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the file offset of the member in its containing archive.
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For descriptors to regular objects, the returned offset is (vacuously)
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zero.
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.Sh RETURN VALUES
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Function
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.Fn elf_getbase
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returns a valid file offset if successful, or
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.Pq Vt off_t
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.Li -1
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in case of an error.
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.Sh ERRORS
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Function
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.Fn elf_getbase
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may fail with the following errors:
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.Bl -tag -width "[ELF_E_RESOURCE]"
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.It Bq Er ELF_E_ARGUMENT
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Argument
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.Ar elf
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was NULL.
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.El
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.Sh SEE ALSO
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.Xr elf 3 ,
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.Xr elf_getarhdr 3 ,
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.Xr elf_getident 3 ,
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.Xr elf_rawfile 3 ,
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.Xr gelf 3
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