function::symdata
FUNCTION:(3stap) Context Functions FUNCTION:(3stap)NAME
function::symdata - Return the kernel symbol and module offset for the address
SYNOPSIS
symdata:string(addr:long)
ARGUMENTS
addr
The address to translate
DESCRIPTION
Returns the (function) symbol name associated with the given address if known, the offset from the start and size of the symbol, plus
module name (between brackets). If symbol is unknown, but module is known, the offset inside the module, plus the size of the module is
added. If any element is not known it will be omitted and if the symbol name is unknown it will return the hex string for the given
address.
SystemTap Tapset Reference May 2013 FUNCTION:(3stap)
Check Out this Related Man Page
GELF_GETSYMSHNDX(3) BSD Library Functions Manual GELF_GETSYMSHNDX(3)NAME
gelf_getsymshndx, gelf_update_symshndx -- read and update symbol information using extended section indices
LIBRARY
ELF Access Library (libelf, -lelf)
SYNOPSIS
#include <gelf.h>
GElf_Sym *
gelf_getsymshndx(Elf_Data *symdata, Elf_Data *xndxdata, int ndx, GElf_Sym *sym, Elf32_Word *xndxptr);
int
gelf_update_symshndx(Elf_Data *symdata, Elf_Data *xndxdata, int ndx, GElf_Sym *sym, Elf32_Word xndx);
DESCRIPTION
These functions are analogous to gelf_getsym() and gelf_update_sym() respectively, but are capable of handling symbol tables using extended
section numbering.
Argument symdata is an Elf_Data descriptor associated with a section of type SHT_SYMTAB. Argument xndxdata is an Elf_Data descriptor associ-
ated with a section of type SHT_SYMTAB_SHNDX. Argument ndx is the index of the symbol table entry being retrieved or updated. Argument sym
is a pointer to a class-independent GElf_Sym structure. GElf_Sym structures are described in detail in gelf(3).
Function gelf_getsymshndx() retrieves symbol information at index ndx from the data descriptor specified by argument symdata and stores in
class-independent form in argument sym. In addition it retrieves the extended section index for the symbol from data buffer xndxdata and
stores it into the location pointed to by argument xndxptr.
Function gelf_update_symshndx() updates the underlying symbol table entry in data descriptor symdata with the information in argument sym.
In addition it sets the extended section index in data buffer xndxdata to the value of argument xndx.
RETURN VALUES
Function gelf_getsymshndx() returns the value of argument sym if successful, or NULL in case of an error.
Function gelf_update_symshndx() returns a non-zero value if successful, or zero in case of an error.
ERRORS
These functions may fail with the following errors:
[ELF_E_ARGUMENT] Arguments symdata, xndxdata, xndxptr or sym were NULL.
[ELF_E_ARGUMENT] Argument ndx was less than zero, or too large for either of descriptors symdata or xndxdata.
[ELF_E_ARGUMENT] Data descriptor symdata was not associated with a section of type SHT_SYMTAB.
[ELF_E_ARGUMENT] Data descriptor xndxdata was not associated with a section of type SHT_SYMTAB_SHNDX.
[ELF_E_ARGUMENT] Data descriptor symdata and xndxdata were associated with different ELF objects.
SEE ALSO elf(3), elf_getdata(3), elf_getscn(3), gelf(3), gelf_getsym(3), gelf_update_sym(3)BSD November 5, 2006 BSD
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