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FreeBSD 11.0 - man page for dwarf_fde_cfa_offset (freebsd section 3)

DWARF_FDE_CFA_OFFSET(3) 				   BSD Library Functions Manual 				   DWARF_FDE_CFA_OFFSET(3)

NAME
dwarf_fde_cfa_offset -- add a DW_CFA_offset frame instruction to a DWARF frame descriptor
LIBRARY
DWARF Access Library (libdwarf, -ldwarf)
SYNOPSIS
#include <libdwarf.h> Dwarf_P_Fde dwarf_fde_cfa_offset(Dwarf_P_Fde fde, Dwarf_Unsigned reg, Dwarf_Signed offset, Dwarf_Error *err);
DESCRIPTION
Function dwarf_fde_cfa_offset() appends a DW_CFA_offset frame instruction to the frame descriptor referenced by argument fde. Argument fde should reference a frame descriptor allocated using dwarf_new_fde(3). Argument reg specifies the register operand for the frame instruction. Argument offset specifies the offset operand for the frame instruction. 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_fde_cfa_offset() returns the frame descriptor given in argument fde. In case of an error, function dwarf_fde_cfa_offset() returns DW_DLV_BADADDR and sets the argument err.
ERRORS
Function dwarf_fde_cfa_offset() can fail with: [DW_DLE_ARGUMENT] Argument fde was NULL. [DW_DLE_MEMORY] An out of memory condition was encountered during the execution of the function.
SEE ALSO
dwarf(3), dwarf_add_fde_inst(3), dwarf_add_frame_fde(3), dwarf_add_frame_fde_b(3), dwarf_add_frame_cie(3), dwarf_new_fde(3)
BSD
September 26, 2011 BSD