* dwarf2-frame.c (dwarf2_frame_data): New variable.
(struct dwarf2_frame_ops): New.
(dwarf2_frame_default_init_reg): New function, based on
dwarf2_frame_init_reg.
(dwarf2_frame_init, dwarf2_frame_set_init_reg): New function.
(dwarf2_frame_init_reg): Call architecture-specific function.
(dwarf2_frame_objfile_data): Renamed from dwarf2_frame_data.
(dwarf2_frame_find_fde, add_fde): Use dwarf2_frame_objfile_data
instead of dwarf2_frame_data.
(_initialize_dwarf2_frame): Initailize new dwarf2_frame_data.
Initialize dwarf2_frame_objfile instead of old dwarf2_frame_data.
(enum dwarf2_frame_reg_rule): New.
(struct dwarf2_frame_state_reg): New.
(dwarf2_frame_sniffer, dwarf2_frame_base_sniffer): Make extern.
* dwarf2-frame.c: Update copyright.
(enum dwarf2_reg_rule): Remove.
(struct dwarf2_frame_state): Remove defenition of `struct
dwarf2_frame_state_reg'.
(read_reg): Call get_frame_arch to get the architecture instead of
using CURRENT_GDBARCH.
(execute_cfa_program): Prefix old `enum dwarf2_reg_rule' tags with
DWARF2_FRAME_.
(dwarf2_frame_init_reg): New function.
(dwarf2_frame_cache): Call get_frame_arch to get the architecture
instead of using CURRENT_GDBARCH. Call dwarf2_frame_init_reg to
initialize the register state. Prefix old `enum dwarf2_reg_rule'
tags with DWARF2_FRAME_.
(dwarf2_frame_prev_register): Call get_frame_arch to get the
architecture instead of using CURRENT_GDBARCH. Prefix old `enum
dwarf2_reg_rule' tags with DWARF2_FRAME_.
