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$Id: dwarf_add_fde_inst.3 3644 2018-10-15 19:55:01Z jkoshy $
.Dd September 26, 2011 .Dt DWARF_ADD_FDE_INST 3 .Os .Sh NAME .Nm dwarf_add_fde_inst .Nd add a call frame instruction to a DWARF frame descriptor .Sh LIBRARY .Lb libdwarf .Sh SYNOPSIS n libdwarf.h .Ft "Dwarf_P_Fde" .Fo dwarf_add_fde_inst .Fa "Dwarf_P_Fde fde" .Fa "Dwarf_Small op" .Fa "Dwarf_Unsigned val1" .Fa "Dwarf_Unsigned val2" .Fa "Dwarf_Error *err" .Fc .Sh DESCRIPTION Function .Fn dwarf_add_fde_inst adds a call frame instruction to the DWARF frame descriptor referenced by argument .Ar fde .
p Argument .Ar fde should reference a frame descriptor allocated using .Xr dwarf_new_fde 3 .
p Argument .Ar op specifies the operator for the frame instruction. The DWARF standard defines the set of legal values for this argument.
p Argument .Ar val1 specifies the first operand of the frame instruction.
p Argument .Ar val2 specifies the second operand of the frame instruction.
p If argument .Ar err is not NULL, it will be used to store error information in case of an error. .Sh RETURN VALUES On success, function .Fn dwarf_add_fde_inst returns the frame descriptor given in argument .Ar fde . In case of an error, function .Fn dwarf_add_fde_inst returns .Dv DW_DLV_BADADDR and sets the argument .Ar err . .Sh ERRORS Function .Fn dwarf_add_fde_inst can fail with: l -tag -width ".Bq Er DW_DLE_FRAME_INSTR_EXEC_ERROR" t Bq Er DW_DLE_ARGUMENT Argument .Ar fde was NULL. t Bq Er DW_DLE_FRAME_INSTR_EXEC_ERROR The frame instruction operator specified in argument .Ar op was invalid. t Bq Er DW_DLE_MEMORY An out of memory condition was encountered during the execution of the function. .El .Sh SEE ALSO .Xr dwarf 3 , .Xr dwarf_add_frame_cie 3 , .Xr dwarf_add_frame_fde 3 , .Xr dwarf_add_frame_fde_b 3 , .Xr dwarf_fde_cfa_offset 3 , .Xr dwarf_new_fde 3 .Rs .%T "The DWARF Debugging Information Format" .%V "Version 4" .%O "http://www.dwarfstd.org/" .Re