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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

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DWARF_ADD_AT_SIGNED_CONST(3)				   BSD Library Functions Manual 			      DWARF_ADD_AT_SIGNED_CONST(3)

NAME
dwarf_add_AT_signed_const, dwarf_add_AT_unsigned_const -- create and attach constant class attributes LIBRARY
DWARF Access Library (libdwarf, -ldwarf) SYNOPSIS
#include <libdwarf.h> Dwarf_P_Attribute dwarf_add_AT_signed_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_Signed value, Dwarf_Error *err); Dwarf_P_Attribute dwarf_add_AT_unsigned_const(Dwarf_P_Debug dbg, Dwarf_P_Die die, Dwarf_Half attr, Dwarf_Unsigned value, Dwarf_Error *err); DESCRIPTION
These functions create attribute descriptors belonging to the 'constant' class and attach them to the debugging information entry referenced by argument die. 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 specifies the attribute code of the created attribute descriptor. Function dwarf_add_AT_signed_const() creates an attribute descriptor with the signed value specified in argument value. Function dwarf_add_AT_unsigned_const() creates an attribute descriptor with the unsigned value specified in argument value. The attribute created by these function will have one of the DWARF forms DW_FORM_data1, DW_FORM_data2, DW_FORM_data4 or DW_FORM_data8, depending on the size of the value specified in argument value. If argument err is not NULL, it will be used by these functions to store error information in case of an error. RETURN VALUES
On success, these functions return the created attribute descriptor. In case of an error, these functions return DW_DLV_BADADDR and set the argument err. ERRORS
These functions can fail with: [DW_DLE_ARGUMENT] Either of the arguments dbg or die was NULL. [DW_DLE_MEMORY] An out of memory condition was encountered during execution. SEE ALSO
dwarf(3), dwarf_add_AT_const_value_signedint(3), dwarf_add_AT_const_value_unsignedint(3), dwarf_add_AT_dataref(3), dwarf_add_AT_ref_address(3), dwarf_add_AT_targ_address_b(3), dwarf_new_die(3), dwarf_producer_init(3), dwarf_producer_init_b(3) BSD
September 4, 2011 BSD

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