09-05-2009
readelf (usually on linux but -- any ELF object file on any platform that supports ELF)
will read a shared library. Shared libraries are the product of link edit -- ld. They are not the product of ar. They don't retain the names of source files for the symbols in the ELF file by default. Or if you think I'm not correct read the ELF file specs yourself. Search for "source"
http://www.skyfree.org/linux/references/ELF_Format.pdf
Note: The .line specification is for debugging executable images and relating a source file and the object code to one another. When objectds are compiled in debug mode.
Last edited by jim mcnamara; 09-05-2009 at 09:38 PM..
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LEARN ABOUT NETBSD
elf_cntl
ELF_CNTL(3) BSD Library Functions Manual ELF_CNTL(3)
NAME
elf_cntl -- control an elf file descriptor
LIBRARY
ELF Access Library (libelf, -lelf)
SYNOPSIS
#include <libelf.h>
int
elf_cntl(Elf *elf, Elf_Cmd cmd);
DESCRIPTION
Function elf_cntl() controls the ELF library's subsequent use of the file descriptor used to create ELF descriptor elf.
Argument cmd informs the library of the action to be taken:
ELF_C_FDDONE This value instructs the ELF library not to perform any further I/O on the file descriptor associated with argument elf. For
ELF descriptors opened with mode ELF_C_WRITE or ELF_C_RDWR subsequent elf_update() operations on the descriptor will fail.
ELF_C_FDREAD This value instructs the ELF library to read in all necessary data associated with ELF descriptor elf into memory so that the
underlying file descriptor can be safely closed with command ELF_C_FDDONE.
Argument elf must be an ELF descriptor associated with a file system object (e.g., an ar(1) archive, an ELF file, or other data file).
IMPLEMENTATION NOTES
Due to use of mmap(2) internally, this function is a no-op for for ELF objects opened in ELF_C_READ mode.
RETURN VALUES
Function elf_cntl() returns 0 on success, or -1 if an error was detected.
ERRORS
[ELF_E_ARCHIVE] Argument elf is a descriptor for an archive member.
[ELF_E_ARGUMENT] Argument elf was NULL.
[ELF_E_ARGUMENT] Argument cmd was not recognized.
[ELF_E_MODE] An ELF_C_FDREAD operation was requested on an ELF descriptor opened for writing.
SEE ALSO
elf(3), elf_begin(3), elf_end(3), elf_next(3), elf_update(3), gelf(3)
BSD
August 9, 2006 BSD