dwarf_get_fde_instr_bytes —
retrieve instructions from FDE descritpor
DWARF Access Library (libdwarf, -ldwarf)
#include
<libdwarf.h>
int
dwarf_get_fde_instr_bytes(
Dwarf_Fde
fde,
Dwarf_Ptr *ret_inst,
Dwarf_Unsigned *ret_len,
Dwarf_Error *error);
Function
dwarf_get_fde_instr_bytes() retrieves
instruction bytes from a given FDE descriptor.
Argument
fde should reference a valid DWARF FDE
descriptor.
Argument
ret_inst should point to a location
that will be set to a pointer to an array of bytes containing the instructions
of the FDE descriptor.
Argument
ret_len should point to a location
that will hold the length in bytes of the instructions returned in argument
ret_inst.
If argument
err is not NULL, it will be used to
store error information in case of an error.
Applications can use the function
dwarf_expand_frame_instructions(3)
to parse and expand the returned instruction bytes into an array of
Dwarf_Frame_Op descriptors.
Function
dwarf_get_fde_instr_bytes() returns
DW_DLV_OK
when it succeeds. In case of an
error, it returns
DW_DLV_ERROR
and sets the
argument
err.
Function
dwarf_get_fde_instr_bytes() can fail with:
-
-
- [
DW_DLE_ARGUMENT
]
- One of the arguments fde,
ret_inst or
ret_len was NULL.
dwarf(3),
dwarf_expand_frame_instructions(3),
dwarf_get_cie_index(3),
dwarf_get_cie_info(3),
dwarf_get_cie_of_fde(3),
dwarf_get_fde_at_pc(3),
dwarf_get_fde_info_for_all_regs(3),
dwarf_get_fde_info_for_all_regs3(3),
dwarf_get_fde_info_for_cfa_reg3(3),
dwarf_get_fde_info_for_reg(3),
dwarf_get_fde_info_for_reg3(3),
dwarf_get_fde_list(3),
dwarf_get_fde_list_eh(3),
dwarf_get_fde_n(3),
dwarf_get_fde_range(3)