re PR target/49868 (Implement named address space to place/access data in flash memory)
gcc/
PR target/49868
* config/avr/avr.h (base_arch_s): Add field n_segments.
(ADDR_SPACE_PGM1, ADDR_SPACE_PGM2, ADDR_SPACE_PGM3,
ADDR_SPACE_PGM4, ADDR_SPACE_PGM5, ADDR_SPACE_PGMX): New address spaces.
(AVR_HAVE_ELPM, AVR_HAVE_ELPMX): New defines.
(INIT_EXPANDERS): New define.
* config/avr/avr-protos.h (avr_mem_pgmx_p): New.
(avr_init_expanders): New.
(avr_emit_movmemhi, avr_out_movmem): New.
(avr_xload_libgcc_p): New.
* config/avr/avr-c.c (avr_register_target_pragmas): Register
address spaces __pgm1, __pgm2, __pgm3, __pgm4 __pgm5, __pgmx.
(avr_cpu_cpp_builtins): Add built-in defines __PGM1,
__PGM2, __PGM3, __PGM4, __PGM5, __PGMX.
* config/avr/avr-devices.c (avr_arch_types): Set field n_segments.
* config/avr/avr.c (AVR_SECTION_PROGMEM): Change define to cover
3 bits instead of just 1.
(xstring_empty, xstring_e, rampz_rtx): New static GTYed variables.
(progmem_section): Change from section to array of sections.
(progmem_section_prefix): New static variable.
(avr_file_start): Print set for __RAMPZ__
(avr_option_override): Move initialization of RTXes from here...
(avr_init_expanders): ...to this new function.
(avr_pgm_segment): New static function.
(avr_decl_pgm_p): Handle error_mark_node.
(avr_mem_pgmx_p, avr_decl_pgmx_p): New static functions.
(avr_out_xload, avr_find_unused_d_reg): New static functions.
(expand_prologue, expand_epilogue): Use rampz_rtx.
(print_operand): Hande CONST_STRING.
(avr_xload_libgcc_p): New static function.
(avr_out_lpm_no_lpmx, avr_out_lpm): Handle ELPM.
(avr_progmem_p): Return 2 for 24-bit flash address space.
(avr_out_sbxx_branch): Clean-up code from ASn macros.
(out_movqi_r_mr, out_movqi_mr_r): Ditto. And recognize RAMPZ's
address and print symbolically.
(avr_asm_named_section, avr_section_type_flags,
avr_encode_section_info, avr_asm_select_section,
avr_addr_space_address_mode, avr_addr_space_pointer_mode,
avr_addr_space_legitimate_address_p, avr_addr_space_convert,
avr_addr_space_legitimize_address): Handle new address spaces.
(avr_output_progmem_section_asm_op): New static function.
(avr_asm_init_sections): Initialize progmem_section[].
(adjust_insn_length): Handle ADJUST_LEN_XLOAD, ADJUST_LEN_MOVMEM.
(avr_const_address_lo16): New static function.
(avr_assemble_integer): Use it to handle 3-byte integers.
(avr_emit_movmemhi, avr_out_movmem): New functions.
* config/avr/predicates.md (nox_general_operand): Handle new
address spaces.
* config/avr/avr.md (unspec): Add UNSPEC_MOVMEM.
(adjust_len): Add xload, movmem.
(SP_ADDR): New define_constants.
(isa): Add "lpm", "lpmx", "elpm", "elpmx".
(enabled): Handle them.
(load<mode>_libgcc): New expander.
(*load.<mode>.libgcc): Rename to load_<mode>_libgcc.
(xload8_A, xload<mode>_A): New insn-and-splits.
(xload_8, xload_<mode>_libgcc, xload_<mode>, loadmem_elpm): New insns.
(mov<mode>): Handle new address spaces.
(movmemhi): Rewrite using avr_emit_movmemhi.
(MOVMEM_r_d): New mode attribute.
(movmem_<mode>, movmem_qi_elpm): New insns.
(setmemhi, *clrmemqi, *clrmemhi, strlenhi, *strlenhi): Unquote
C-code. Use label instead of hard-coded instrunction lengths.
libgcc/
PR target/49868
* config/avr/t-avr (LIB1ASMFUNCS): Add _xload_2 _xload_3 _xload_4.
* config/avr/lib1funcs.S (__xload_2, __xload_3, __xload_4):
New functions.
From-SVN: r181482
7bc6df2ca1