dwarf_die_link(3) [freebsd man page]

DWARF_DIE_LINK(3)					   BSD Library Functions Manual 					 DWARF_DIE_LINK(3)

NAME

     dwarf_die_link -- link a debugging information entry

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     Dwarf_P_Die
     dwarf_die_link(Dwarf_P_Die die, Dwarf_P_Die parent, Dwarf_P_Die child, Dwarf_P_Die left, Dwarf_P_Die right, Dwarf_Error *err);

DESCRIPTION

     Function dwarf_die_link() links debugging information entries together.

     Argument die should specify the debugging information entry to be updated.

     Argument parent specifies the new parent link for the debugging information entry.

     Argument child specifies the new first child link for the debugging information entry.

     Argument left specifies the new left sibling link for the debugging information entry.

     Argument right specifies the new right sibling link for the debugging information entry.

     Only one of arguments parent, child, left and right is allowed to be non-NULL.  Existing links to parent, child, left or right debugging
     information entries, if any, will be unlinked before the specified link is established.

     If argument err is not NULL, it will be used to store error information in case of an error.

RETURN VALUES

     On success, function dwarf_die_link() returns the debugging information entry provided in argument die.  In case of an error, function
     dwarf_die_link() returns DW_DLV_BADADDR and sets the argument err.

ERRORS

     The function dwarf_die_link() can fail with:

     [DW_DLE_ARGUMENT]	Argument die was NULL.

     [DW_DLE_ARGUMENT]	More than one of the arguments parent, child, left and right were non-NULL.

SEE ALSO

     dwarf(3), dwarf_add_die_to_debug(3), dwarf_new_die(3)

BSD
								 September 4, 2011							       BSD

DWARF_NEW_DIE(3)					   BSD Library Functions Manual 					  DWARF_NEW_DIE(3)

NAME

     dwarf_new_die -- allocate a new debugging information entry

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     Dwarf_P_Die
     dwarf_new_die(Dwarf_P_Debug dbg, Dwarf_Tag tag, Dwarf_P_Die parent, Dwarf_P_Die child, Dwarf_P_Die left, Dwarf_P_Die right,
	 Dwarf_Error *err);

DESCRIPTION

     Function dwarf_new_die() allocates a new DWARF debugging information entry and links it to another debugging information entry.

     Argument dbg should reference a DWARF producer instance allocated using dwarf_producer_init(3) or dwarf_producer_init_b(3).

     Argument tag should specify the tag of the newly created debugging information entry.  Valid values for this argument are those for the
     DW_TAG_* symbols defined in <libdwarf.h>.

     Argument parent specifies the parent link of the debugging information entry.

     Argument child specifies the first child link of the debugging information entry.

     Argument left specifies the left sibling link of the debugging information entry.

     Argument right specifies the right sibling link of the debugging information entry.

     Only one of arguments parent, child, left and right is allowed to be non-NULL.  Application code can subsequently call the function
     dwarf_die_link(3) to change the links for the created debugging information entry.

     If argument err is not NULL, it will be used to store error information in case of an error.

RETURN VALUES

     On success, function dwarf_new_die() returns the newly created debugging information entry.  In case of an error, function dwarf_new_die()
     returns DW_DLV_BADADDR and sets the argument err.

ERRORS

     Function dwarf_new_die() can fail with:

     [DW_DLE_ARGUMENT]	Argument dbg was NULL.

     [DW_DLE_ARGUMENT]	More than one of the arguments parent, child, left and right were non-NULL.

     [DW_DLE_MEMORY]	An out of memory condition was encountered during the execution of the function.

EXAMPLES

     To create debugging information entries and add them to the producer instance, use:

	   Dwarf_P_Debug dbg;
	   Dwarf_P_Die die1, die2;
	   Dwarf_Error de;

	   /* ... assume dbg refers to a DWARF producer instance ... */

	   die1 = dwarf_new_die(dbg, DW_TAG_compilation_unit, NULL, NULL, NULL,
	       NULL, &de);
	   if (die1 == NULL) {
		   warnx("dwarf_new_die failed: %s", dwarf_errmsg(-1));
		   return;
	   }

	   die2 = dwarf_new_die(dbg, DW_TAG_base_type, die1, NULL, NULL,
	       NULL, &de);
	   if (die1 == NULL) {
		   warnx("dwarf_new_die failed: %s", dwarf_errmsg(-1));
		   return;
	   }

	   if (dwarf_add_die_to_debug(dbg, die1, &de) != DW_DLV_OK) {
		   warnx("dwarf_add_die_to_debug failed: %s", dwarf_errmsg(-1));
		   return;
	   }

SEE ALSO

     dwarf(3), dwarf_add_die_to_debug(3), dwarf_die_link(3), dwarf_producer_init(3), dwarf_producer_init_b(3)

BSD
								 September 4, 2011							       BSD