dwarf_new_die(3) [freebsd man page]

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

Check Out this Related Man Page

DWARF_ADD_AT_REFERENCE(3)				   BSD Library Functions Manual 				 DWARF_ADD_AT_REFERENCE(3)

NAME

     dwarf_add_AT_reference -- create and attach an attribute that references another DIE

LIBRARY

     DWARF Access Library (libdwarf, -ldwarf)

SYNOPSIS

     #include <libdwarf.h>

     Dwarf_P_Attribute
     dwarf_add_AT_reference(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_P_Die ref_die, Dwarf_Error *err);

DESCRIPTION

     Function dwarf_add_AT_reference() creates an attribute descriptor that references another debugging information entry in the same compilation
     unit.  The attribute will be of DWARF form DW_FORM_ref4 or DW_FORM_ref8 depending on the target address size, and will contain the section-
     relative offset of the referenced debugging information entry as its value.

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

     Argument die should reference a debugging information entry allocated using dwarf_new_die(3).

     Argument attr should specify the attribute code of the created attribute descriptor.

     Argument ref_die should hold the debugging information entry descriptor that the attribute should refer to.

     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_add_AT_reference() returns the created attribute descriptor.  In case of an error, function
     dwarf_add_AT_reference() returns DW_DLV_BADADDR and sets the argument err.

ERRORS

     Function dwarf_add_AT_reference() can fail with:

     [DW_DLE_ARGUMENT]	One of the arguments dbg, die or ref_die was NULL.

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

SEE ALSO

     dwarf(3), dwarf_add_AT_dataref(3), dwarf_add_AT_ref_address(3), dwarf_add_AT_signed_const(3), dwarf_add_AT_unsigned_const(3),
     dwarf_new_die(3), dwarf_producer_init(3), dwarf_producer_init_b(3)

BSD
								 September 4, 2011							       BSD

Linux and UNIX Man Pages

dwarf_new_die(3) [freebsd man page]

Check Out this Related Man Page

Featured Tech Videos