dwarf_fde_cfa_offset —
add a DW_CFA_offset frame instruction to a DWARF
frame descriptor
DWARF Access Library (libdwarf, -ldwarf)
#include
<libdwarf.h>
Dwarf_P_Fde
dwarf_fde_cfa_offset(
Dwarf_P_Fde
fde,
Dwarf_Unsigned reg,
Dwarf_Signed offset,
Dwarf_Error *err);
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.
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.
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.
dwarf(3),
dwarf_add_fde_inst(3),
dwarf_add_frame_cie(3),
dwarf_add_frame_fde(3),
dwarf_add_frame_fde_b(3),
dwarf_new_fde(3)