mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-22 02:37:15 +00:00
ae500c1ff8
Highlights: - Make sure that only TLS sections are sorted into TLS segment. - Fixed multiple errors in "Section to Segment mapping". - Man page updates - ar improvements - elfcopy: avoid filter_reloc uninitialized variable for rela - elfcopy: avoid stripping relocations from static binaries - readelf: avoid printing directory in front of absolute path - readelf: add NT_FREEBSD_FEATURE_CTL FreeBSD note type - test improvements NOTES: Some of these changes originated in FreeBSD and simply reduce diffs between contrib and vendor. ELF Tool Chain ar is not (currently) used in FreeBSD, and there are improvements in both FreeBSD and ELF Tool Chain ar that are not in the other. Sponsored by: The FreeBSD Foundation
117 lines
3.4 KiB
Groff
117 lines
3.4 KiB
Groff
.\" Copyright (c) 2009,2011 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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.\" $Id: elftc_demangle.3 3645 2018-10-15 20:17:14Z jkoshy $
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.\"
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.Dd August 24, 2011
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.Dt ELFTC_DEMANGLE 3
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.Os
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.Sh NAME
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.Nm elftc_demangle
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.Nd demangle a C++ name
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.Sh LIBRARY
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.Lb libelftc
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.Sh SYNOPSIS
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.In libelftc.h
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.Ft int
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.Fo elftc_demangle
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.Fa "const char *encodedname"
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.Fa "char *buffer"
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.Fa "size_t bufsize"
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.Fa "unsigned int flags"
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.Fc
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.Sh DESCRIPTION
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Function
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.Fn elftc_demangle
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decodes a symbol name encoded according to the type encoding rules
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for the C++ language and returns a string denoting an equivalent
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C++ prototype.
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.Pp
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Argument
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.Ar encodedname
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specifies the encoded symbol name.
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Argument
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.Ar buffer
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denotes a programmer-specified area to place the prototype string in.
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Argument
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.Ar bufsize
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specifies the size of the programmer-specified area.
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Argument
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.Ar flags
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specifies the encoding style in use for argument
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.Ar encodedname .
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Supported encoding styles are:
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.Bl -tag -width ".Dv ELFTC_DEM_GNU3"
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.It Dv ELFTC_DEM_ARM
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The encoding style used by compilers adhering to the conventions of the
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C++ Annotated Reference Manual.
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.It Dv ELFTC_DEM_GNU2
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The encoding style by GNU C++ version 2.
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.It Dv ELFTC_DEM_GNU3
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The encoding style by GNU C++ version 3 and later.
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.El
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.Pp
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Argument
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.Ar flags
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may be zero, in which case the function will attempt to guess the
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encoding scheme from the contents of
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.Ar encodedname .
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.Sh RETURN VALUES
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Function
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.Fn elftc_demangle
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returns 0 on success.
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In case of an error it returns -1 and sets the
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.Va errno
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variable.
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.Sh EXAMPLES
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To decode a name that uses an unknown encoding style use:
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.Bd -literal -offset indent
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char buffer[1024];
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const char *funcname;
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funcname = ...; /* points to string to be demangled */
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if (elftc_demangle(funcname, buffer, sizeof(buffer), 0) == 0)
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printf("Demangled name: %\\n", buffer);
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else
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perror("Cannot demangle %s", funcname);
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.Ed
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.Sh ERRORS
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Function
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.Fn elftc_demangle
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may fail with the following errors:
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.Bl -tag -width ".Bq Er ENAMETOOLONG"
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.It Bq Er EINVAL
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Argument
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.Ar encodedname
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was not a valid encoded name.
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.It Bq Er ENAMETOOLONG
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The output buffer specified by arguments
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.Ar buffer
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and
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.Ar bufsize
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was too small to hold the decoded function prototype.
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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_strptr 3
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