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st_sym_value(3)						       st_sym_value(3)

NAME
       st_sym_value,  st_sym_type,  st_sym_class, st_sym_to_file, st_sym_name,
       st_sym_name_copy, st_free_name, st_sym_to_outer_scope_sym,  st_end_sym,
       st_proc_end_sym,	     st_external_name_sym,     st_frame_offset_to_sym,
       st_sym_size,   st_is_sym_weak,	 st_is_sym_local,    st_is_sym_global,
       st_get_mangled_name_flag, st_set_mangled_name_flag - access information
       about the symbols in an object, and access or set  symbol  name	deman‐
       gling controls

SYNOPSIS
       #include <st.h>

       st_status_t st_sym_value(
	       st_obj_t *obj,
	       st_sym_t sym,
	       unsigned long *value ); st_status_t st_sym_type(
	       st_obj_t *obj,
	       st_sym_t sym,
	       unsigned int *sym_type ); st_status_t st_sym_class(
	       st_obj_t *obj,
	       st_sym_t sym,
	       unsigned int *sym_class ); st_status_t st_sym_to_file(
	       st_obj_t *obj,
	       st_sym_t sym,
	       st_file_t *file ); st_status_t st_sym_name(
	       st_obj_t *obj,
	       st_sym_t sym,
	       char **name) ); st_status_t st_sym_name_copy(
	       st_obj_t *obj,
	       st_sym_t sym,
	       char *name_buf,
	       int buflen,
	       int *truncated ); void st_free_name(
	       st_obj_t *obj,
	       char *name ); st_status_t st_sym_to_outer_scope_sym(
	       st_obj_t *obj,
	       st_sym_t sym,
	       st_sym_t *osym ); st_status_t st_end_sym(
	       st_obj_t *obj,
	       st_sym_t sym,
	       st_sym_t *esym ); st_status_t st_proc_end_sym(
	       st_obj_t *obj,
	       st_sym_t sym,
	       st_sym_t *esym ); st_status_t st_external_name_sym(
	       st_obj_t *obj,
	       const char *name,
	       st_sym_t *osym ); st_status_t st_frame_offset_to_sym(
	       st_obj_t *obj,
	       st_proc_t proc,
	       int frame_offset,
	       st_sym_t *osym,
	       int *byte_offset ); st_status_t st_sym_size(
	       st_obj_t *obj,
	       st_sym_t sym,
	       unsigned long *size ); st_status_t st_is_sym_weak(
	       st_obj_t *obj,
	       st_sym_t symbol,
	       st_bool_t *weak ); st_status_t st_is_sym_local(
	       st_obj_t *obj,
	       st_sym_t symbol,
	       st_bool_t *local ); st_status_t st_is_sym_global(
	       st_obj_t *obj,
	       st_sym_t symbol,
	       st_bool_t *global ); st_status_t st_set_mangled_name_flag(
	       st_obj_t *obj,
	       unsigned int flag,

       ); st_status_t st_get_mangled_name_flag(
	       st_obj_t *obj,
	       unsigned int *flag,

       );

LIBRARY
       Symbol Table and Object File Access Library (libst.a)

PARAMETERS
       Specifies  an object handle, as returned by the st_obj_open() function.
       Specifies  a  symbol   handle.	 Specifies   an	  address   to	 which
       st_sym_value()  returns the value of the specified symbol. The value of
       a symbol depends on its type and class. For procedures,	data  symbols,
       or  bss symbols, the value is the address. For members of structures or
       unions, the value is the offset to the field  from  the	start  of  the
       structure.  For	local  symbols or arguments, the value is its relative
       offset from the procedure's frame pointer.   Specifies  an  address  to
       which  st_sym_type()  returns  the type of the specified symbol. Symbol
       types are defined in /usr/include/symconst.h. Each symbol type  defini‐
       tion  begins  with  the	prefix	st, for example, stProc.  Specifies an
       address to which st_sym_class() returns the class of the specified sym‐
       bol. Symbol classes are defined in /usr/include/symconst.h. Each symbol
       class definition begins with the prefix sc, for example, scText.	 Spec‐
       ifies  an  address  to which st_sym_to_file() returns the handle of the
       file that contains the given symbol.  Specifies	an  address  to	 which
       st_sym_name()  returns a pointer to a null-terminated string containing
       the name of the given symbol.  Specifies the address  of	 a  buffer  to
       which st_sym_name_copy() returns a copy of the specified symbol's name.
       Specifies   the	 length	  of   the   buffer   (name_buf)   to	 which
       st_sym_name_copy()  returns a copy of the specified symbol's name.  You
       should add one for the name string's null  terminator  to  this	count.
       Specifies  an address to which st_sym_name_copy() returns the number of
       characters by which the symbol name returned to	name_buf  exceeds  the
       number  specified  in  buflen.  If  the name exceeds buflen characters,
       st_sym_name_copy() truncates it.	 Specifies an  address	for  a	symbol
       handle.	 st_sym_to_outer_scope_sym()  returns the symbol handle of the
       block or procedure  that	 contains  the	specified  symbol.   st_exter‐
       nal_name_sym()  returns the symbol handle of the named external symbol.
       st_frame_offset_to_sym() returns the symbol handle corresponding to the
       specified frame offset in the given procedure.  Specifies an address to
       which st_end_sym() or st_proc_end_sym() returns the ending symbol  han‐
       dle  of	the block or procedure, respectively, that contains the speci‐
       fied symbol.  Specifies a positive number that  is  a  relative	offset
       from  the  virtual  frame  pointer  for	a  procedure  (often the stack
       pointer) that st_frame_offset_to_sym() uses to obtain a symbol  handle.
       Specifies an address to which st_frame_offset_to_sym() returns the off‐
       set into the variable to which frame_offset corresponds.	 Specifies  an
       address	to  which st_sym_size() returns the size in bytes of the given
       symbol.	Specify Boolean variables for  return  values.	 Specifies  an
       address	to  which st_get_mangled_name_flag() returns the current state
       of the specified object's name-demangling flags, or an address contain‐
       ing  the flag values that st_set_mangled_name_flag() is to write to the
       specified object's name-demangling flags. Valid	name-demangling	 flags
       are defined in /usr/include/cmplrs/demangle_string.h.

DESCRIPTION
       These functions return information about the symbols in an object. Sym‐
       bols may represent files,  procedures,  or  local  or  global  symbols.
       Return  the value, type, and class of a given symbol.  Returns the han‐
       dle of the file that contains  the  given  symbol.   The	 st_sym_name()
       function	 returns  a pointer to a null-terminated string containing the
       name of the given symbol. If the symbol represents a C++ name and name-
       demangling  is  enabled	(the default), st_sym_name() dynamically allo‐
       cates the buffer in which it stores the name. Otherwise, it  sets  name
       to the address of the string in the object.  In either case, the caller
       should not modify the returned name buffer,  but	 instead  should  make
       modifications to a copy of the name.

	      To  release a buffer that may have been dynamically allocated by
	      st_sym_name(), use the st_free_name() function.  Ensure that you
	      specify the same symbol handle to st_free_name() that you previ‐
	      ously specified to st_sym_name(). Otherwise,  you	 may  inadver‐
	      tently  release  memory  used for some other purpose.  Returns a
	      copy of the specified symbol name to a user-supplied buffer.  If
	      the  name	 string, including its null terminator, exceeds buflen
	      characters, st_sym_name_copy() truncates it, returning the  num‐
	      ber  of  truncated  characters in truncated. For C++ names, this
	      function is useful because it avoids returning dynamically allo‐
	      cated   buffers	that  must  later  be  released	 by  calls  to
	      st_free_name(). For non-C++ names,  however,  it	involves  more
	      overhead.	  Returns  the symbol handle of the enclosing block or
	      procedure for the specified symbol.  This	 function  is  helpful
	      when  you	 are  processing  local	 symbols or alternate entries.
	      Return the ending symbol	handle	of  the	 block	or  procedure,
	      respectively, containing the specified symbol.  Returns the sym‐
	      bol handle for the named external symbol.	  Returns  the	symbol
	      corresponding  to the specified frame offset in the given proce‐
	      dure.  The frame offset must be a positive number and a relative
	      offset  from  the	 virtual  frame	 pointer for a procedure. Fre‐
	      quently, but not always, this is the stack pointer. For example,
	      if an instruction references a local variable with 20($sp), then
	      the frame offset would be	 20.  The  symbol  that	 st_frame_off‐
	      set_to_sym()  returns  may  be a parameter to the procedure or a
	      local symbol. The st_frame_offset_to_sym() function  sets	 byte-
	      offset  to the offset (always greater or equal to zero) into the
	      variable to which the frame_offset corresponds. The  byte_offset
	      from  a  variable may span compiler temporaries on the stack. To
	      check this case, use st_sym_size() to obtain  the	 size  of  the
	      returned	symbol and compare it to the byte offset.  Returns the
	      size in bytes of the specified symbol.  These routines are Bool‐
	      ean  functions that return a flag that indicates whether a given
	      symbol belongs to each category. Note that only  global  symbols
	      can  be  weak. If st_is_sym_weak() is passed a local symbol han‐
	      dle, it returns ST_E_INVALID_SYM to indicate that the given sym‐
	      bol  cannot  be  weak.   The  st_get_mangled_name_flag  function
	      returns the current state of the name-demangling flags  for  the
	      specified object.

	      The st_set_mangled_name_flag() function sets the name-demangling
	      flags for the specified object to the  value  contained  in  the
	      address specified in the flag parameter.

	      Name  demangling is enabled or disabled at the object level only
	      for C++ files. By default, name demangling is  enabled  when  an
	      object  is  opened.  The name demangling flags have an effect on
	      the C++ name translations that are performed when functions such
	      as  st_sym_name()	 are  called.  Valid name-demangling flags are
	      defined in /usr/include/cmplrs/demangle_string.h.

RETURN VALUES
       All functions indicate success by returning a value of 0 (zero). A pos‐
       itive  return  value  is	 an errno value from a system call. A negative
       return value is a library error	or  informational  code.  The  library
       codes are documented in st.h.

       Return  parameters  are	set  to	 0 or -1 when an error occurs. Address
       parameters are set to 0 while file and procedure handles are set to -1.
       An  exception  to  this	is  if	a NULL pointer for the object or other
       return parameter is input. In these cases, the return  parameters  will
       be  unchanged.  A  nonzero  return status is the recommended method for
       detecting an error return from a libst function.

FILES
       Header file that contains all definitions and function  prototypes  for
       libst.a	functions Header file that controls name-demangling operations
       for C++ objects Header file that defines symbol types Header file  that
       defines symbol classes

SEE ALSO
       Commands: atom(1)

       Functions:    libst_intro(3),	st_addr_to_file(3),   st_file_lang(3),
       st_obj_calls(3),		st_obj_open(3),		 st_obj_file_start(3),
       st_objlist_append(3), st_proc_addr(3)

							       st_sym_value(3)
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