bfd ChangeLog

	* elf32-xtensa.c (elf32xtensa_size_opt): New global variable.
	(xtensa_default_isa): Global variable moved here from xtensa-isa.c.
	(elf32xtensa_no_literal_movement): New global variable.
	(elf_howto_table): Add entries for new relocations.
	(elf_xtensa_reloc_type_lookup): Handle new relocations.
	(property_table_compare): When addresses are equal, compare sizes and
	various property flags.
	(property_table_matches): New.
	(xtensa_read_table_entries): Extend to read new property tables.  Add
	output_addr parameter to indicate that output addresses should be used.
	Use bfd_get_section_limit.
	(elf_xtensa_find_property_entry): New.
	(elf_xtensa_in_literal_pool): Use elf_xtensa_find_property_entry.
	(elf_xtensa_check_relocs): Handle new relocations.
	(elf_xtensa_do_reloc): Use bfd_get_section_limit.  Handle new
	relocations.  Use new xtensa-isa.h functions.
	(build_encoding_error_message): Remove encode_result parameter.  Add
	new target_address parameter used to detect alignment errors.
	(elf_xtensa_relocate_section): Use bfd_get_section_limit.  Clean up
	error handling.  Use new is_operand_relocation function.
	(elf_xtensa_combine_prop_entries, elf_xtensa_merge_private_bfd_data):
	Use underbar macro for error messages.  Formatting.
	(get_const16_opcode): New.
	(get_l32r_opcode): Add a separate flag for initialization.
	(get_relocation_opnd): Operand number is no longer explicit in the
	relocation.  Change to decode the opcode and analyze its operands.
	(get_relocation_slot): New.
	(get_relocation_opcode): Add bfd parameter.  Use bfd_get_section_limit.
	Use new xtensa-isa.h functions to handle multislot instructions.
	(is_l32r_relocation): Add bfd parameter.  Use is_operand_relocation.
	(get_asm_simplify_size, is_alt_relocation, is_operand_relocation,
	insn_decode_len, insn_decode_opcode, check_branch_target_aligned,
	check_loop_aligned, check_branch_target_aligned_address, narrowable,
	widenable, narrow_instruction, widen_instruction, op_single_fmt_table,
	get_single_format, init_op_single_format_table): New.
	(elf_xtensa_do_asm_simplify): Add error_message parameter and use it
	instead of calling _bfd_error_handler.  Use new xtensa-isa.h functions.
	(contract_asm_expansion): Add error_message parameter and pass it to
	elf_xtensa_do_asm_simplify.  Replace use of R_XTENSA_OP0 relocation
	with R_XTENSA_SLOT0_OP.
	(get_expanded_call_opcode): Extend to handle either L32R or CONST16
	instructions.  Use new xtensa-isa.h functions.
	(r_reloc struct): Add new virtual_offset field.
	(r_reloc_init): Add contents and content_length parameters.  Set
	virtual_offset field to zero.  Add contents to target_offset field for
	partial_inplace relocations.
	(r_reloc_is_defined): Check for null.
	(print_r_reloc): New debug function.
	(source_reloc struct): Replace xtensa_operand field with pair of the
	opcode and the operand position.  Add is_abs_literal field.
	(init_source_reloc): Specify operand by opcode/position pair.  Set
	is_abs_literal field.
	(source_reloc_compare): When target_offsets are equal, compare other
	fields to make sorting predictable.
	(literal_value struct): Add is_abs_literal field.
	(value_map_hash_table struct): Add has_last_loc and last_loc fields.
	(init_literal_value): New.
	(is_same_value): Replace with ...
	(literal_value_equal): ... this function.  Add comparisons of
	virtual_offset and is_abs_literal fields.
	(value_map_hash_table_init): Use bfd_zmalloc.  Check for allocation
	failure.  Initialize has_last_loc field.
	(value_map_hash_table_delete): New.
	(hash_literal_value): Rename to ...
	(literal_value_hash): ... this.  Include is_abs_literal flag and
	virtual_offset field in the hash value.
	(get_cached_value): Rename to ...
	(value_map_get_cached_value): ... this.  Update calls to
	literal_value_hash and literal_value_equal.
	(add_value_map): Check for allocation failure.  Update calls to
	value_map_get_cached_value and literal_value_hash.
	(text_action, text_action_list, text_action_t): New types.
	(find_fill_action, compute_removed_action_diff, adjust_fill_action,
	text_action_add, text_action_add_literal, offset_with_removed_text,
	offset_with_removed_text_before_fill, find_insn_action,
	print_action_list, print_removed_literals): New.
	(offset_with_removed_literals): Delete.
	(xtensa_relax_info struct): Add is_relaxable_asm_section, action_list,
	fix_array, fix_array_count, allocated_relocs, relocs_count, and
	allocated_relocs_count fields.
	(init_xtensa_relax_info): Initialize new fields.
	(reloc_bfd_fix struct): Add new translated field.
	(reloc_bfd_fix_init): Add translated parameter and use it to set the
	translated field.
	(fix_compare, cache_fix_array): New.
	(get_bfd_fix): Remove fix_list parameter and get all relax_info for the
	section via get_xtensa_relax_info.  Use cache_fix_array to set up
	sorted fix_array and use bsearch instead of linear search.
	(section_cache_t): New struct.
	(init_section_cache, section_cache_section, clear_section_cache): New.
	(ebb_t, ebb_target_enum, proposed_action, ebb_constraint): New types.
	(init_ebb_constraint, free_ebb_constraint, init_ebb, extend_ebb_bounds,
	extend_ebb_bounds_forward, extend_ebb_bounds_backward,
	insn_block_decodable_len, ebb_propose_action, ebb_add_proposed_action):
	New.
	(retrieve_contents): Use bfd_get_section_limit.
	(elf_xtensa_relax_section): Add relocations_analyzed flag.  Update call
	to compute_removed_literals.  Free value_map_hash_table when no longer
	needed.
	(analyze_relocations): Check is_relaxable_asm_section flag.  Call
	compute_text_actions for all sections.
	(find_relaxable_sections): Mark sections as relaxable if they contain
	ASM_EXPAND relocations that can be optimized.  Adjust r_reloc_init
	call.  Increment relax_info src_count field only for appropriate
	relocation types.  Remove is_literal_section check.
	(collect_source_relocs): Use bfd_get_section_limit.  Adjust calls to
	r_reloc_init and find_associated_l32r_irel.  Check
	is_relaxable_asm_section flag.  Handle L32R instructions with absolute
	literals.  Pass is_abs_literal flag to init_source_reloc.
	(is_resolvable_asm_expansion): Use bfd_get_section_limit.  Check for
	CONST16 instructions.  Adjust calls to r_reloc_init and
	pcrel_reloc_fits.  Handle weak symbols conservatively.
	(find_associated_l32r_irel): Add bfd parameter and pass it to
	is_l32r_relocation.
	(compute_text_actions, compute_ebb_proposed_actions,
	compute_ebb_actions, check_section_ebb_pcrels_fit,
	check_section_ebb_reduces, text_action_add_proposed,
	compute_fill_extra_space): New.
	(remove_literals): Replace with ...
	(compute_removed_literals): ... this function.  Call
	init_section_cache.  Use bfd_get_section_limit.  Sort internal_relocs.
	Call xtensa_read_table_entries to get the property table.  Skip
	relocations other than R_XTENSA_32 and R_XTENSA_PLT.  Use new
	is_removable_literal, remove_dead_literal, and
	identify_literal_placement functions.
	(get_irel_at_offset): Rewrite to use bsearch on sorted relocations
	instead of linear search.
	(is_removable_literal, remove_dead_literal,
	identify_literal_placement): New.
	(relocations_reach): Update check for literal not referenced by any
	PC-relative relocations.  Adjust call to pcrel_reloc_fits.
	(coalesce_shared_literal, move_shared_literal): New.
	(relax_section): Use bfd_get_section_limit.  Call
	translate_section_fixes.  Update calls to r_reloc_init and
	offset_with_removed_text.  Check new is_relaxable_asm_section flag.
	Add call to pin_internal_relocs.  Add special handling for
	R_XTENSA_ASM_SIMPLIFY and R_XTENSA_DIFF* relocs.  Use virtual_offset
	info to calculate new addend_displacement variable.  Replace code for
	deleting literals with more general code to perform the actions
	determined by the action_list for the section.
	(translate_section_fixes, translate_reloc_bfd_fix): New.
	(translate_reloc): Check new is_relaxable_asm_section flag.  Call
	find_removed_literal only if is_operand_relocation.  Update call to
	offset_with_removed_text.  Use new target_offset and removed_bytes
	variables.
	(move_literal): New.
	(relax_property_section):  Use bfd_get_section_limit.  Set new
	is_full_prop_section flag and handle new property tables.  Update calls
	to r_reloc_init and offset_with_removed_text.  Check
	is_relaxable_asm_section flag.  Handle expansion of zero-sized
	unreachable entries, with use of offset_with_removed_text_before_fill.
	For relocatable links, combine entries only for literal tables.
	(relax_section_symbols): Check is_relaxable_asm_section flag.  Update
	calls to offset_with_removed_text.  Translate st_size field for
	function symbols.
	(do_fix_for_relocatable_link): Change to return bfd_boolean to indicate
	failure.  Add contents parameter.  Update call to get_bfd_fix.  Update
	call to r_reloc_init.  Call _bfd_error_handler and return FALSE for
	R_XTENSA_ASM_EXPAND relocs.
	(do_fix_for_final_link): Add input_bfd and contents parameters.  Update
	call to get_bfd_fix.  Include offset from contents for partial_inplace
	relocations.
	(is_reloc_sym_weak): New.
	(pcrel_reloc_fits): Use new xtensa-isa.h functions.
	(prop_sec_len): New.
	(xtensa_is_property_section): Handle new property sections.
	(is_literal_section): Delete.
	(internal_reloc_compare): When r_offset matches, compare r_info and
	r_addend to make sorting predictable.
	(internal_reloc_matches): New.
	(xtensa_get_property_section_name): Handle new property sections.
	(xtensa_get_property_predef_flags): New.
	(xtensa_callback_required_dependence): Use bfd_get_section_limit.
	Update calls to xtensa_isa_init, is_l32r_relocation, and r_reloc_init.
	* xtensa-isa.c (xtensa_default_isa): Moved to elf32-xtensa.c.
	(xtisa_errno, xtisa_error_msg): New variables.
	(xtensa_isa_errno, xtensa_isa_error_msg): New.
	(xtensa_insnbuf_alloc): Add error handling.
	(xtensa_insnbuf_to_chars): Add num_chars parameter.  Update to
	use xtensa_format_decode.  Add error handling.
	(xtensa_insnbuf_from_chars): Add num_chars parameter.  Decode the
	instruction length to find the number of bytes to copy.
	(xtensa_isa_init): Add error handling.  Replace calls to
	xtensa_load_isa and xtensa_extend_isa with code to initialize lookup
	tables in the xtensa_modules structure.
	(xtensa_check_isa_config, xtensa_add_isa, xtensa_load_isa,
	xtensa_extend_isa): Delete.
	(xtensa_isa_free): Change to only free lookup tables.
	(opname_lookup_compare): Replace with ...
	(xtensa_isa_name_compare): ... this function.  Use strcasecmp.
	(xtensa_insn_maxlength): Rename to ...
	(xtensa_isa_maxlength): ... this.
	(xtensa_insn_length): Delete.
	(xtensa_insn_length_from_first_byte): Replace with ...
	(xtensa_isa_length_from_chars): ... this function.
	(xtensa_num_opcodes): Rename to ...
	(xtensa_isa_num_opcodes): ... this.
	(xtensa_isa_num_pipe_stages, xtensa_isa_num_formats,
	xtensa_isa_num_regfiles, xtensa_isa_num_stages,
	xtensa_isa_num_sysregs, xtensa_isa_num_interfaces,
	xtensa_isa_num_funcUnits, xtensa_format_name, xtensa_format_lookup,
	xtensa_format_decode, xtensa_format_encode, xtensa_format_length,
	xtensa_format_num_slots, xtensa_format_slot_nop_opcode,
	xtensa_format_get_slot, xtensa_format_set_slot): New functions.
	(xtensa_opcode_lookup): Add error handling.
	(xtensa_decode_insn): Replace with ...
	(xtensa_opcode_decode): ... this function, with new format and
	slot parameters.  Add error handling.
	(xtensa_encode_insn): Replace with ...
	(xtensa_opcode_encode): ... this function, which does the encoding via
	one of the entries in the "encode_fns" array.  Add error handling.
	(xtensa_opcode_name): Add error handling.
	(xtensa_opcode_is_branch, xtensa_opcode_is_jump, xtensa_opcode_is_loop,
	xtensa_opcode_is_call): New.
	(xtensa_num_operands): Replace with ...
	(xtensa_opcode_num_operands): ... this function.  Add error handling.
	(xtensa_opcode_num_stateOperands,
	xtensa_opcode_num_interfaceOperands, xtensa_opcode_num_funcUnit_uses,
	xtensa_opcode_funcUnit_use, xtensa_operand_name,
	xtensa_operand_is_visible): New.
	(xtensa_get_operand, xtensa_operand_kind): Delete.
	(xtensa_operand_inout): Add error handling and special-case for
	"sout" operands.
	(xtensa_operand_get_field, xtensa_operand_set_field): Rewritten to
	operate on one slot of an instruction.  Added error handling.
	(xtensa_operand_encode): Handle default operands with no encoding
	functions.  Check for success by comparing against decoded value.
	Add error handling.
	(xtensa_operand_decode): Handle default operands.  Return decoded value
	through argument pointer.  Add error handling.
	(xtensa_operand_is_register, xtensa_operand_regfile,
	xtensa_operand_num_regs, xtensa_operand_is_known_reg): New.
	(xtensa_operand_isPCRelative): Rename to ...
	(xtensa_operand_is_PCrelative): ... this.  Add error handling.
	(xtensa_operand_do_reloc, xtensa_operand_undo_reloc): Return value
	through argument pointer.  Add error handling.
	(xtensa_stateOperand_state, xtensa_stateOperand_inout,
	xtensa_interfaceOperand_interface, xtensa_regfile_lookup,
	xtensa_regfile_lookup_shortname, xtensa_regfile_name,
	xtensa_regfile_shortname, xtensa_regfile_view_parent,
	xtensa_regfile_num_bits, xtensa_regfile_num_entries,
	xtensa_state_lookup, xtensa_state_name, xtensa_state_num_bits,
	xtensa_state_is_exported, xtensa_sysreg_lookup,
	xtensa_sysreg_lookup_name, xtensa_sysreg_name, xtensa_sysreg_number,
	xtensa_sysreg_is_user, xtensa_interface_lookup, xtensa_interface_name,
	xtensa_interface_num_bits, xtensa_interface_inout,
	xtensa_interface_has_side_effect, xtensa_funcUnit_lookup,
	xtensa_funcUnit_name, xtensa_funcUnit_num_copies): New.
	* xtensa-modules.c: Rewrite to use new data structures.
	* reloc.c (BFD_RELOC_XTENSA_DIFF8, BFD_RELOC_XTENSA_DIFF16,
	BFD_RELOC_XTENSA_DIFF32, BFD_RELOC_XTENSA_SLOT0_OP,
	BFD_RELOC_XTENSA_SLOT1_OP, BFD_RELOC_XTENSA_SLOT2_OP,
	BFD_RELOC_XTENSA_SLOT3_OP, BFD_RELOC_XTENSA_SLOT4_OP,
	BFD_RELOC_XTENSA_SLOT5_OP, BFD_RELOC_XTENSA_SLOT6_OP,
	BFD_RELOC_XTENSA_SLOT7_OP, BFD_RELOC_XTENSA_SLOT8_OP,
	BFD_RELOC_XTENSA_SLOT9_OP, BFD_RELOC_XTENSA_SLOT10_OP,
	BFD_RELOC_XTENSA_SLOT11_OP, BFD_RELOC_XTENSA_SLOT12_OP,
	BFD_RELOC_XTENSA_SLOT13_OP, BFD_RELOC_XTENSA_SLOT14_OP,
	BFD_RELOC_XTENSA_SLOT0_ALT, BFD_RELOC_XTENSA_SLOT1_ALT,
	BFD_RELOC_XTENSA_SLOT2_ALT, BFD_RELOC_XTENSA_SLOT3_ALT,
	BFD_RELOC_XTENSA_SLOT4_ALT, BFD_RELOC_XTENSA_SLOT5_ALT,
	BFD_RELOC_XTENSA_SLOT6_ALT, BFD_RELOC_XTENSA_SLOT7_ALT,
	BFD_RELOC_XTENSA_SLOT8_ALT, BFD_RELOC_XTENSA_SLOT9_ALT,
	BFD_RELOC_XTENSA_SLOT10_ALT, BFD_RELOC_XTENSA_SLOT11_ALT,
	BFD_RELOC_XTENSA_SLOT12_ALT, BFD_RELOC_XTENSA_SLOT13_ALT,
	BFD_RELOC_XTENSA_SLOT14_ALT): Add new relocations.
	* Makefile.am (xtensa-isa.lo, xtensa-modules.lo): Update dependencies.
	* Makefile.in: Regenerate.
	* bfd-in2.h: Likewise.
	* libbfd.h: Likewise.

gas ChangeLog

	* config/tc-xtensa.c (absolute_literals_supported): New global flag.
	(UNREACHABLE_MAX_WIDTH): Define.
	(XTENSA_FETCH_WIDTH): Delete.
	(cur_vinsn, xtensa_fetch_width, xt_saved_debug_type, past_xtensa_end,
	prefer_const16, prefer_l32r): New global variables.
	(LIT4_SECTION_NAME): Define.
	(lit4_state struct): Add lit4_seg_name and lit4_seg fields.
	(XTENSA_PROP_*, GET_XTENSA_PROP_*, SET_XTENSA_PROP_*): Define.
	(frag_flags struct): New.
	(xtensa_block_info struct): Move from tc-xtensa.h.  Add flags field.
	(subseg_map struct): Add cur_total_freq and cur_target_freq fields.
	(bitfield, bit_is_set, set_bit, clear_bit): Define.
	(MAX_FORMATS): Define.
	(op_placement_info struct, op_placement_table): New.
	(O_pltrel, O_hi16, O_lo16): Define.
	(directiveE enum): Rename directive_generics to directive_transform.
	Delete directive_relax.  Add directive_schedule,
	directive_absolute_literals, and directive_last_directive.
	(directive_info): Rename "generics" to "transform".  Delete "relax".
	Add "schedule" and "absolute-literals".
	(directive_state): Adjust entries to match changes in directive_info.
	(xtensa_relax_statesE, RELAX_IMMED_MAXSTEPS): Move to tc-xtensa.h.
	(xtensa_const16_opcode, xtensa_movi_opcode, xtensa_movi_n_opcode,
	xtensa_l32r_opcode, xtensa_nop_opcode, xtensa_rsr_lcount_opcode): New.
	(xtensa_j_opcode, xtensa_rsr_opcode): Delete.
	(align_only_targets, software_a0_b_retw_interlock,
	software_avoid_b_j_loop_end, maybe_has_b_j_loop_end,
	software_avoid_short_loop, software_avoid_close_loop_end,
	software_avoid_all_short_loops, specific_opcode): Delete.
	(warn_unaligned_branch_targets): New.
	(workaround_a0_b_retw, workaround_b_j_loop_end, workaround_short_loop,
	workaround_close_loop_end, workaround_all_short_loops): Default FALSE.
	(option_[no_]link_relax, option_[no_]transform,
	option_[no_]absolute_literals, option_warn_unaligned_targets,
	option_prefer_l32r, option_prefer_const16, option_target_hardware):
	New enum values.
	(option_[no_]align_only_targets, option_literal_section_name,
	option_text_section_name, option_data_section_name,
	option_bss_section_name, option_eb, option_el): Delete.
	(md_longopts): Add entries for: [no-]transform, [no-]absolute-literals,
	warn-unaligned-targets, prefer-l32r, prefer-const16, [no-]link-relax,
	and target-hardware.  Delete entries for [no-]target-align-only,
	literal-section-name, text-section-name, data-section-name, and
	bss-section-name.
	(md_parse_option): Handle new options and remove old ones.  Accept but
	ignore [no-]density options.  Warn for [no-]generics and [no-]relax
	and treat them as [no-]transform.
	(md_show_usage): Add new options and remove old ones.
	(xtensa_setup_hw_workarounds): New.
	(md_pseudo_table): Change "word" entry to use xtensa_elf_cons.  Add
	"long", "short", "loc" and "frequency" entries.
	(use_generics): Rename to ...
	(use_transform): ... this function.  Add past_xtensa_end check.
	(use_longcalls): Add past_xtensa_end check.
	(code_density_available, can_relax): Delete.
	(do_align_targets): New.
	(get_directive): Accept dashes in directive names.  Warn about
	[no-]generics and [no-]relax directives and treat them as
	[no-]transform.
	(xtensa_begin_directive): Call md_flush_pending_output only for some
	directives.  Check for directives inside instruction bundles.  Warn
	about deprecated ".begin literal" usage.  Warn and ignore [no-]density
	directives.  Handle new directives.  Check generating_literals flag
	for literal_prefix.
	(xtensa_end_directive): Check for directives inside instruction
	bundles.  Warn and ignore [no-]density directives.  Handle new
	directives.  Call xtensa_set_frag_assembly_state.
	(xtensa_loc_directive_seen, xtensa_dwarf2_directive_loc,
	xtensa_dwarf2_emit_insn): New.
	(xtensa_literal_position): Call md_flush_pending_output.  Do not check
	use_literal_section flag.
	(xtensa_literal_pseudo): Call md_flush_pending_output.  Handle absolute
	literals.  Use xtensa_elf_cons to parse the expression.
	(xtensa_literal_prefix): Do not check use_literal_section.  Support
	".lit4" sections for absolute literals.  Change prefix convention to
	replace ".text" (or ".t" in a linkonce section).  No need to call
	subseg_set.
	(xtensa_frequency_pseudo, xtensa_elf_cons, xtensa_elf_suffix): New.
	(expression_end): Handle closing braces and colons.
	(PLT_SUFFIX, plt_suffix): Delete.
	(expression_maybe_register): Use new xtensa-isa.h functions.  Use
	xtensa_elf_suffix instead of checking for plt suffix, and handle O_lo16
	and O_hi16 expressions as well.
	(tokenize_arguments): Handle closing braces and colons.
	(parse_arguments): Use new xtensa-isa.h functions.  Handle "invisible"
	operands and paired register syntax.
	(get_invisible_operands): New.
	(xg_translate_sysreg_op): Handle new Xtensa LX RSR/WSR/XSR syntax.  Use
	new xtensa-isa.h functions.
	(xtensa_translate_old_userreg_ops, xtensa_translate_zero_immed): New.
	(xg_translate_idioms): Check if inside bundle.  Use use_transform.
	Handle new Xtensa LX RSR/WSR/XSR syntax.  Remove code to widen density
	instructions.  Use xtensa_translate_zero_immed.
	(operand_is_immed, operand_is_pcrel_label): Delete.
	(get_relaxable_immed): Use new xtensa-isa.h functions.
	(get_opcode_from_buf): Add slot parameter.  Use new xtensa-isa.h
	functions.
	(xtensa_print_insn_table, print_vliw_insn): New.
	(is_direct_call_opcode): Use new xtensa-isa.h functions.
	(is_call_opcode, is_loop_opcode, is_conditional_branch_opcode,
	is_branch_or_jump_opcode): Delete.
	(is_movi_opcode, decode_reloc, encode_reloc, encode_alt_reloc): New.
	(opnum_to_reloc, reloc_to_opnum): Delete.
	(xtensa_insnbuf_set_operand, xtensa_insnbuf_get_operand): Use new
	xtensa-isa.h functions.  Operate on one slot of an instruction.
	(xtensa_insnbuf_set_immediate_field, is_negatable_branch,
	xg_get_insn_size): Delete.
	(xg_get_build_instr_size): Use xg_get_single_size.
	(xg_is_narrow_insn, xg_is_single_relaxable_insn): Update calls to
	xg_build_widen_table.  Use xg_get_single_size.
	(xg_get_max_narrow_insn_size): Delete.
	(xg_get_max_insn_widen_size, xg_get_max_insn_widen_literal_size,
	xg_is_relaxable_insn): Update calls to xg_build_widen_table.  Use
	xg_get_single_size.
	(xg_build_to_insn): Record the loc field.  Handle OP_OPERAND_HI16U and
	OP_OPERAND_LOW16U.  Check xg_valid_literal_expression.
	(xg_expand_to_stack, xg_expand_narrow): Update calls to
	xg_build_widen_table.  Use xg_get_single_size.
	(xg_immeds_fit): Use new xtensa-isa.h functions.  Update call to
	xg_check_operand.
	(xg_symbolic_immeds_fit): Likewise.  Also handle O_lo16 and O_hi16, and
	treat weak symbols conservatively.
	(xg_check_operand): Use new xtensa-isa.h functions.
	(is_dnrange): Delete.
	(xg_assembly_relax): Inline previous calls to tinsn_copy.
	(xg_finish_frag): Specify separate relax states for the frag and slot0.
	(is_branch_jmp_to_next, xg_add_branch_and_loop_targets): Use new
	xtensa-isa.h functions.
	(xg_instruction_matches_option_term, xg_instruction_matches_or_options,
	xg_instruction_matches_options): New.
	(xg_instruction_matches_rule): Handle O_register expressions.  Call
	xg_instruction_matches_options.
	(transition_rule_cmp): New.
	(xg_instruction_match): Update call to xg_build_simplify_table.
	(xg_build_token_insn): Record loc fields.
	(xg_simplify_insn): Check is_specific_opcode field and
	density_supported flag.
	(xg_expand_assembly_insn): Skip checking code_density_available.  Use
	new xtensa-isa.h functions.  Call use_transform instead of can_relax.
	(xg_assemble_literal): Add error handling for O_big.  Call
	record_alignment.  Handle O_pltrel.
	(xg_valid_literal_expression): New.
	(xg_assemble_literal_space): Add slot parameter.  Remove call to
	set_expr_symbol_offset.  Add call to record_alignment.  Update call to
	xg_finish_frag.
	(xg_emit_insn): Delete.
	(xg_emit_insn_to_buf): Add format parameter.  Update calls to
	xg_add_opcode_fix and xtensa_insnbuf_to_chars.
	(xg_add_opcode_fix): Change opcode parameter to tinsn and add format
	and slot parameters.  Handle new "alternate" relocations for absolute
	literals and CONST16 instructions.  Check for bad uses of O_lo16 and
	O_hi16.  Use new xtensa-isa.h functions.
	(xg_assemble_tokens): Delete.
	(is_register_writer): Use new xtensa-isa.h functions.
	(is_bad_loopend_opcode): Check for xtensa_rsr_lcount_opcode instead of
	old-style RSR from LCOUNT.
	(next_frag_opcode): Delete.
	(next_frag_opcode_is_loop, next_frag_format_size, frag_format_size,
	update_next_frag_state): New.
	(update_next_frag_nop_state): Delete.
	(next_frag_pre_opcode_bytes): Use next_frag_opcode_is_loop.
	(xtensa_mark_literal_pool_location): Check use_literal_section flag and
	the state of the absolute-literals directive.  Add calls to
	record_alignment and xtensa_set_frag_assembly_state.  Call
	xtensa_switch_to_non_abs_literal_fragment instead of
	xtensa_switch_to_literal_fragment.
	(build_nop): New.
	(assemble_nop): Use build_nop.  Update call to xtensa_insnbuf_to_chars.
	(get_expanded_loop_offset): Change check for undefined opcode to an
	assertion.
	(xtensa_set_frag_assembly_state, relaxable_section,
	xtensa_find_unmarked_state_frags, xtensa_find_unaligned_branch_targets,
	xtensa_find_unaligned_loops, xg_apply_tentative_value): New.
	(md_begin): Update call to xtensa_isa_init.  Initialize linkrelax to 1.
	Set lit4_seg_name.  Call xg_init_vinsn.  Initialize new global opcodes.
	Call init_op_placement_info_table and xtensa_set_frag_assembly_state.
	(xtensa_init_fix_data): New.
	(xtensa_frob_label): Reset label symbol to the current frag.  Check
	do_align_targets and generating_literals flag.  Propagate frequency
	info to new alignment frag.  Call xtensa_set_frag_assembly_state.
	(xtensa_unrecognized_line): New.
	(xtensa_flush_pending_output): Check if inside a bundle.  Add a call
	to xtensa_set_frag_assembly_state.
	(error_reset_cur_vinsn): New.
	(md_assemble): Remove check for literal frag.  Remove call to
	istack_init.  Call use_transform instead of use_generics.  Parse
	explicit instruction format specifiers.  Move code for
	a0_b_retw_interlock workaround to xg_assemble_vliw_tokens.  Call
	error_reset_cur_vinsn on errors.  Add call to get_invisible_operands.
	Add dwarf2_where call.  Remote automatic alignment for ENTRY
	instructions.  Move call to xtensa_clear_insn_labels to the end.
	Rearrange to handle bundles.
	(xtensa_cons_fix_new): Delete.
	(xtensa_handle_align): New.
	(xtensa_frag_init): Call xtensa_set_frag_assembly_state.  Remove
	assignment to is_no_density field.
	(md_pcrel_from): Use new xtensa-isa.h functions.  Use decode_reloc
	instead of reloc_to_opnum.  Handle "alternate" relocations.
	(xtensa_force_relocation, xtensa_check_inside_bundle,
	xtensa_elf_section_change_hook): New.
	(xtensa_symbol_new_hook): Delete.
	(xtensa_fix_adjustable): Check for difference of symbols with an
	offset.  Check for external and weak symbols.
	(md_apply_fix3): Remove cases for XTENSA_OP{0,1,2} relocs.
	(md_estimate_size_before_relax): Return expansion for the first slot.
	(tc_gen_reloc): Handle difference of symbols by producing
	XTENSA_DIFF{8,16,32} relocs and by writing the value of the difference
	into the output.  Handle new XTENSA_SLOT*_OP relocs by storing the
	tentative values into the output when linkrelax is set.
	(XTENSA_PROP_SEC_NAME): Define.
	(xtensa_post_relax_hook): Call xtensa_find_unmarked_state_frags.
	Create literal tables only if using literal sections.  Create new
	property tables instead of old instruction tables.  Check for unaligned
	branch targets and loops.
	(finish_vinsn, find_vinsn_conflicts, check_t1_t2_reads_and_writes,
	new_resource_table, clear_resource_table, resize_resource_table,
	resources_available, reserve_resources, release_resources,
	opcode_funcUnit_use_unit, opcode_funcUnit_use_stage,
	resources_conflict, xg_find_narrowest_format, relaxation_requirements,
	bundle_single_op, emit_single_op, xg_assemble_vliw_tokens): New.
	(xtensa_end): Call xtensa_flush_pending_output.  Set past_xtensa_end
	flag.  Update checks for workaround options.  Call
	xtensa_mark_narrow_branches and xtensa_mark_zcl_first_insns.
	(xtensa_cleanup_align_frags): Add special case for branch targets.
	Check for and mark unreachable frags.
	(xtensa_fix_target_frags): Remove use of align_only_targets flag.
	Use RELAX_LOOP_END_BYTES in special case for negatable branch at the
	end of a zero-overhead loop body.
	(frag_can_negate_branch): Handle instructions with multiple slots.
	Use new xtensa-isa.h functions
	(xtensa_mark_narrow_branches, is_narrow_branch_guaranteed_in_range,
	xtensa_mark_zcl_first_insns): New.
	(xtensa_fix_a0_b_retw_frags, xtensa_fix_b_j_loop_end_frags): Error if
	transformations are disabled.
	(next_instrs_are_b_retw): Use new xtensa-isa.h functions.  Handle
	multislot instructions.
	(xtensa_fix_close_loop_end_frags, xtensa_fix_short_loop_frags):
	Likewise.  Also error if transformations are disabled.
	(unrelaxed_frag_max_size): New.
	(unrelaxed_frag_min_insn_count, unrelax_frag_has_b_j): Use new
	xtensa-isa.h functions.
	(xtensa_sanity_check, is_empty_loop, is_local_forward_loop): Use
	xtensa_opcode_is_loop instead of is_loop_opcode.
	(get_text_align_power): Replace as_fatal with assertion.
	(get_text_align_fill_size): Iterate instead of using modulus when
	use_nops is false.
	(get_noop_aligned_address): Assert that this is for a machine-dependent
	RELAX_ALIGN_NEXT_OPCODE frag.  Use next_frag_opcode_is_loop,
	xg_get_single_size, and frag_format_size.
	(get_widen_aligned_address): Rename to ...
	(get_aligned_diff): ... this function.  Add max_diff parameter.
	Remove handling of rs_align/rs_align_code frags.  Use
	next_frag_format_size, get_text_align_power, get_text_align_fill_size,
	next_frag_opcode_is_loop, and xg_get_single_size.  Compute max_diff
	and pass it back to caller.
	(xtensa_relax_frag): Use relax_frag_loop_align.  Add code for new
	RELAX_SLOTS, RELAX_MAYBE_UNREACHABLE, RELAX_MAYBE_DESIRE_ALIGN,
	RELAX_FILL_NOP, and RELAX_UNREACHABLE frag types.  Check relax_seen.
	(relax_frag_text_align): Rename to ...
	(relax_frag_loop_align): ... this function.  Assume loops can only be
	in the first slot of an instruction.
	(relax_frag_add_nop): Use assemble_nop instead of constructing an OR
	instruction.  Remove call to frag_wane.
	(relax_frag_narrow): Rename to ...
	(relax_frag_for_align): ... this function.  Extend to handle
	RELAX_FILL_NOP and RELAX_UNREACHABLE, as well as RELAX_SLOTS with
	RELAX_NARROW for the first slot.
	(find_address_of_next_align_frag, bytes_to_stretch): New.
	(future_alignment_required): Use find_address_of_next_align_frag and
	bytes_to_stretch.  Look ahead to subsequent frags to make smarter
	alignment decisions.
	(relax_frag_immed): Add format, slot, and estimate_only parameters.
	Check if transformations are enabled for b_j_loop_end workaround.
	Use new xtensa-isa.h functions and handle multislot instructions.
	Update call to xg_assembly_relax.
	(md_convert_frag): Handle new RELAX_SLOTS, RELAX_UNREACHABLE,
	RELAX_MAYBE_UNREACHABLE, RELAX_MAYBE_DESIRE_ALIGN, and RELAX_FILL_NOP
	frag types.
	(convert_frag_narrow): Add segP, format and slot parameters.  Call
	convert_frag_immed for branch instructions.  Adjust calls to
	tinsn_from_chars, tinsn_immed_from_frag, and xg_emit_insn_to_buf.  Use
	xg_get_single_size and xg_get_single_format.
	(convert_frag_fill_nop): New.
	(convert_frag_immed): Add format and slot parameters.  Handle multislot
	instructions and use new xtensa-isa.h functions.  Update calls to
	tinsn_immed_from_frag and xg_assembly_relax.  Check if transformations
	enabled for b_j_loop_end workaround.  Use build_nop instead of
	assemble_nop.  Check is_specific_opcode flag.  Check for unreachable
	frags.  Use xg_get_single_size.  Handle O_pltrel.
	(fix_new_exp_in_seg): Remove check for old plt flag.
	(convert_frag_immed_finish_loop): Update calls to tinsn_from_chars and
	xtensa_insnbuf_to_chars.  Call tinsn_immed_from_frag.  Change check
	for loop opcode to an assertion.  Mark all frags up to the end of the
	loop as not transformable.
	(get_last_insn_flags, set_last_insn_flags): Use get_subseg_info.
	(get_subseg_info): New.
	(xtensa_move_literals): Call xtensa_set_frag_assembly_state.  Add null
	check for dest_seg.
	(xtensa_switch_to_literal_fragment): Rewrite to handle absolute
	literals and use xtensa_switch_to_non_abs_literal_fragment otherwise.
	(xtensa_switch_to_non_abs_literal_fragment): New.
	(cache_literal_section): Add is_code parameter and pass it through to
	retrieve_literal_seg.
	(retrieve_literal_seg): Add is_code parameter and use it to set the
	flags on the literal section.  Handle case where head parameter is 0.
	(get_frag_is_no_transform, set_frag_is_specific_opcode,
	set_frag_is_no_transform): New.
	(xtensa_create_property_segments): Add end_property_function parameter
	and pass it through to add_xt_block_frags.  Call bfd_get_section_flags
	and skip SEC_DEBUGGING and !SEC_ALLOC sections.
	(xtensa_create_xproperty_segments, section_has_xproperty): New.
	(add_xt_block_frags): Add end_property_function parameter and call it
	if it is non-zero.  Call xtensa_frag_flags_init.
	(xtensa_frag_flags_is_empty, xtensa_frag_flags_init,
	get_frag_property_flags, frag_flags_to_number,
	xtensa_frag_flags_combinable, xt_block_aligned_size,
	xtensa_xt_block_combine, add_xt_prop_frags,
	init_op_placement_info_table, opcode_fits_format_slot,
	xg_get_single_size, xg_get_single_format): New.
	(istack_push): Inline call to tinsn_copy.
	(tinsn_copy): Delete.
	(tinsn_has_invalid_symbolic_operands): Handle O_hi16 and O_lo16 and
	CONST16 opcodes.  Handle O_big, O_illegal, and O_absent.
	(tinsn_has_complex_operands): Handle O_hi16 and O_lo16.
	(tinsn_to_insnbuf): Use xg_get_single_format and new xtensa-isa.h
	functions.  Handle invisible operands.
	(tinsn_to_slotbuf): New.
	(tinsn_check_arguments): Use new xtensa-isa.h functions.
	(tinsn_from_chars): Add slot parameter.  Rewrite using xg_init_vinsn,
	vinsn_from_chars, and xg_free_vinsn.
	(tinsn_from_insnbuf): New.
	(tinsn_immed_from_frag): Add slot parameter and handle multislot
	instructions.  Handle symbol differences.
	(get_num_stack_text_bytes): Use xg_get_single_size.
	(xg_init_vinsn, xg_clear_vinsn, vinsn_has_specific_opcodes,
	xg_free_vinsn, vinsn_to_insnbuf, vinsn_from_chars, expr_is_register,
	get_expr_register, set_expr_symbol_offset_diff): New.
	* config/tc-xtensa.h (MAX_SLOTS): Define.
	(xtensa_relax_statesE): Move from tc-xtensa.c. Add
	RELAX_CHECK_ALIGN_NEXT_OPCODE, RELAX_MAYBE_DESIRE_ALIGN, RELAX_SLOTS,
	RELAX_FILL_NOP, RELAX_UNREACHABLE, RELAX_MAYBE_UNREACHABLE, and
	RELAX_NONE types.
	(RELAX_IMMED_MAXSTEPS): Move from tc-xtensa.c.
	(xtensa_frag_type struct): Add is_assembly_state_set,
	use_absolute_literals, relax_seen, is_unreachable, is_specific_opcode,
	is_align, is_text_align, alignment, and is_first_loop_insn fields.
	Replace is_generics and is_relax fields by is_no_transform field.
	Delete is_text and is_longcalls fields.  Change text_expansion and
	literal_expansion to arrays of MAX_SLOTS entries.  Add arrays of
	per-slot information: literal_frags, slot_subtypes, slot_symbols,
	slot_sub_symbols, and slot_offsets.  Add fr_prev field.
	(xtensa_fix_data struct): New.
	(xtensa_symfield_type struct): Delete plt field.
	(xtensa_block_info struct): Move definition to tc-xtensa.h.  Add
	forward declaration here.
	(xt_section_type enum): Delete xt_insn_sec.  Add xt_prop_sec.
	(XTENSA_SECTION_RENAME): Undefine.
	(TC_FIX_TYPE, TC_INIT_FIX_DATA, TC_FORCE_RELOCATION, NO_PSEUDO_DOT,
	tc_unrecognized_line, md_do_align, md_elf_section_change_hook,
	HANDLE_ALIGN, TC_LINKRELAX_FIXUP, SUB_SEGMENT_ALIGN): Define.
	(TC_CONS_FIX_NEW, tc_symbol_new_hook): Delete.
	(unit_num_copies_func, opcode_num_units_func,
	opcode_funcUnit_use_unit_func, opcode_funcUnit_use_stage_func): New.
	(resource_table struct): New.
	* config/xtensa-istack.h (MAX_INSN_ARGS): Increase from 6 to 10.
	(TInsn struct): Add keep_wide, loc, fixup, record_fix, subtype,
	literal_space, symbol, sub_symbol, offset, and literal_frag fields.
	(tinsn_copy): Delete prototype.
	(vliw_insn struct): New.
	* config/xtensa-relax.c (insn_pattern_struct): Add options field.
	(widen_spec_list): Add option conditions for density and boolean
	instructions.  Add expansions using CONST16 and conditions for using
	CONST16 vs. L32R.  Use new Xtensa LX RSR/WSR syntax.  Add entries for
	predicted branches.
	(simplify_spec_list): Add option conditions for density instructions.
	Add entry for NOP instruction.
	(append_transition): Add cmp function pointer parameter and use it to
	insert the new entry in order.
	(operand_function_LOW16U, operand_function_HI16U): New.
	(xg_has_userdef_op_fn, xg_apply_userdef_op_fn): Handle
	OP_OPERAND_LOW16U and OP_OPERAND_HI16U.
	(enter_opname, split_string): Use xstrdup instead of strdup.
	(init_insn_pattern): Initialize new options field.
	(clear_req_or_option_list, clear_req_option_list,
	clone_req_or_option_list, clone_req_option_list, parse_option_cond):
	New.
	(parse_insn_pattern): Parse option conditions.
	(transition_applies): New.
	(build_transition): Use new xtensa-isa.h functions.  Fix incorrectly
	swapped last arguments in calls to append_constant_value_condition.
	Call clone_req_option_list.  Add warning about invalid opcode.
	Handle LOW16U and HI16U function names.
	(build_transition_table): Add cmp parameter and use it in calls to
	append_transition.  Use new xtensa-isa.h functions.  Check
	transition_applies before adding entries.
	(xg_build_widen_table, xg_build_simplify_table): Add cmp parameter and
	pass it through to build_transition_table.
	* config/xtensa-relax.h (ReqOrOptionList, ReqOrOption, ReqOptionList,
	ReqOption, transition_cmp_fn): New types.
	(OpType enum): Add OP_OPERAND_LOW16U and OP_OPERAND_HI16U.
	(transition_rule struct): Add options field.
	* doc/as.texinfo (Overview): Update Xtensa options.
	* doc/c-xtensa.texi (Xtensa Options): Delete --[no-]density,
	--[no-]relax, and --[no-]generics options.  Update descriptions of
	--text-section-literals and --[no-]longcalls.  Add
	--[no-]absolute-literals and --[no-]transform.
	(Xtensa Syntax): Add description of syntax for FLIX instructions.
	Remove use of "generic" and "specific" terminology for opcodes.
	(Xtensa Registers): Generalize the syntax description to include
	user-defined register files.
	(Xtensa Automatic Alignment): Update.
	(Xtensa Branch Relaxation): Mention limitation of unconditional jumps.
	(Xtensa Call Relaxation): Linker can now remove most of the overhead.
	(Xtensa Directives): Remove confusing rules about precedence.
	(Density Directive, Relax Directive): Delete.
	(Schedule Directive): New.
	(Generics Directive): Rename to ...
	(Transform Directive): ... this node.
	(Literal Directive): Update for absolute literals.  Missing
	literal_position directive is now an error.
	(Literal Position Directive): Update for absolute literals.
	(Freeregs Directive): Delete.
	(Absolute Literals Directive): New.
	(Frame Directive): Minor editing.
	* Makefile.am (DEPTC_xtensa_elf, DEPOBJ_xtensa_elf, DEP_xtensa_elf):
	Update dependencies.
	* Makefile.in: Regenerate.

gas/testsuite ChangeLog

	* gas/xtensa/all.exp: Adjust expected error message for j_too_far.
	Change entry_align test to expect an error.
	* gas/xtensa/entry_misalign2.s: Use no-transform instead of
	no-generics directives.

include ChangeLog

	* xtensa-config.h (XSHAL_USE_ABSOLUTE_LITERALS,
	XCHAL_HAVE_PREDICTED_BRANCHES, XCHAL_INST_FETCH_WIDTH): New.
	(XCHAL_EXTRA_SA_SIZE, XCHAL_EXTRA_SA_ALIGN): Delete.
	* xtensa-isa-internal.h (ISA_INTERFACE_VERSION): Delete.
	(config_sturct struct): Delete.
	(XTENSA_OPERAND_IS_REGISTER, XTENSA_OPERAND_IS_PCRELATIVE,
	XTENSA_OPERAND_IS_INVISIBLE, XTENSA_OPERAND_IS_UNKNOWN,
	XTENSA_OPCODE_IS_BRANCH, XTENSA_OPCODE_IS_JUMP,
	XTENSA_OPCODE_IS_LOOP, XTENSA_OPCODE_IS_CALL,
	XTENSA_STATE_IS_EXPORTED, XTENSA_INTERFACE_HAS_SIDE_EFFECT): Define.
	(xtensa_format_encode_fn, xtensa_get_slot_fn, xtensa_set_slot_fn): New.
	(xtensa_insn_decode_fn): Rename to ...
	(xtensa_opcode_decode_fn): ... this.
	(xtensa_immed_decode_fn, xtensa_immed_encode_fn, xtensa_do_reloc_fn,
	xtensa_undo_reloc_fn): Update.
	(xtensa_encoding_template_fn): Delete.
	(xtensa_opcode_encode_fn, xtensa_format_decode_fn,
	xtensa_length_decode_fn): New.
	(xtensa_format_internal, xtensa_slot_internal): New types.
	(xtensa_operand_internal): Delete operand_kind, inout, isPCRelative,
	get_field, and set_field fields.  Add name, field_id, regfile,
	num_regs, and flags fields.
	(xtensa_arg_internal): New type.
	(xtensa_iclass_internal): Change operands field to array of
	xtensa_arg_internal.  Add num_stateOperands, stateOperands,
	num_interfaceOperands, and interfaceOperands fields.
	(xtensa_opcode_internal): Delete length, template, and iclass fields.
	Add iclass_id, flags, encode_fns, num_funcUnit_uses, and funcUnit_uses.
	(opname_lookup_entry): Delete.
	(xtensa_regfile_internal, xtensa_interface_internal,
	xtensa_funcUnit_internal, xtensa_state_internal,
	xtensa_sysreg_internal, xtensa_lookup_entry): New.
	(xtensa_isa_internal): Replace opcode_table field with opcodes field.
	Change type of opname_lookup_table.  Delete num_modules,
	module_opcode_base, module_decode_fn, config, and has_density fields.
	Add num_formats, formats, format_decode_fn, length_decode_fn,
	num_slots, slots, num_fields, num_operands, operands, num_iclasses,
	iclasses, num_regfiles, regfiles, num_states, states,
	state_lookup_table, num_sysregs, sysregs, sysreg_lookup_table,
	max_sysreg_num, sysreg_table, num_interfaces, interfaces,
	interface_lookup_table, num_funcUnits, funcUnits and
	funcUnit_lookup_table fields.
	(xtensa_isa_module, xtensa_isa_modules): Delete.
	(xtensa_isa_name_compare): New prototype.
	(xtisa_errno, xtisa_error_msg): New.
	* xtensa-isa.h (XTENSA_ISA_VERSION): Define.
	(xtensa_isa): Change type.
	(xtensa_operand): Delete.
	(xtensa_format, xtensa_regfile, xtensa_state, xtensa_sysreg,
	xtensa_interface, xtensa_funcUnit, xtensa_isa_status,
	xtensa_funcUnit_use): New types.
	(libisa_module_specifier): Delete.
	(xtensa_isa_errno, xtensa_isa_error_msg): New prototypes.
	(xtensa_insnbuf_free, xtensa_insnbuf_to_chars,
	xtensa_insnbuf_from_chars): Update prototypes.
	(xtensa_load_isa, xtensa_extend_isa, xtensa_default_isa,
	xtensa_insn_maxlength, xtensa_num_opcodes, xtensa_decode_insn,
	xtensa_encode_insn, xtensa_insn_length,
	xtensa_insn_length_from_first_byte, xtensa_num_operands,
	xtensa_operand_kind, xtensa_encode_result,
	xtensa_operand_isPCRelative): Delete.
	(xtensa_isa_init, xtensa_operand_inout, xtensa_operand_get_field,
	xtensa_operand_set_field, xtensa_operand_encode,
	xtensa_operand_decode, xtensa_operand_do_reloc,
	xtensa_operand_undo_reloc): Update prototypes.
	(xtensa_isa_maxlength, xtensa_isa_length_from_chars,
	xtensa_isa_num_pipe_stages, xtensa_isa_num_formats,
	xtensa_isa_num_opcodes, xtensa_isa_num_regfiles, xtensa_isa_num_states,
	xtensa_isa_num_sysregs, xtensa_isa_num_interfaces,
	xtensa_isa_num_funcUnits, xtensa_format_name, xtensa_format_lookup,
	xtensa_format_decode, xtensa_format_encode, xtensa_format_length,
	xtensa_format_num_slots, xtensa_format_slot_nop_opcode,
	xtensa_format_get_slot, xtensa_format_set_slot, xtensa_opcode_decode,
	xtensa_opcode_encode, xtensa_opcode_is_branch, xtensa_opcode_is_jump,
	xtensa_opcode_is_loop, xtensa_opcode_is_call,
	xtensa_opcode_num_operands, xtensa_opcode_num_stateOperands,
	xtensa_opcode_num_interfaceOperands, xtensa_opcode_num_funcUnit_uses,
	xtensa_opcode_funcUnit_use, xtensa_operand_name,
	xtensa_operand_is_visible, xtensa_operand_is_register,
	xtensa_operand_regfile, xtensa_operand_num_regs,
	xtensa_operand_is_known_reg, xtensa_operand_is_PCrelative,
	xtensa_stateOperand_state, xtensa_stateOperand_inout,
	xtensa_interfaceOperand_interface, xtensa_regfile_lookup,
	xtensa_regfile_lookup_shortname, xtensa_regfile_name,
	xtensa_regfile_shortname, xtensa_regfile_view_parent,
	xtensa_regfile_num_bits, xtensa_regfile_num_entries,
	xtensa_state_lookup, xtensa_state_name, xtensa_state_num_bits,
	xtensa_state_is_exported, xtensa_sysreg_lookup,
	xtensa_sysreg_lookup_name, xtensa_sysreg_name, xtensa_sysreg_number,
	xtensa_sysreg_is_user, xtensa_interface_lookup, xtensa_interface_name,
	xtensa_interface_num_bits, xtensa_interface_inout,
	xtensa_interface_has_side_effect, xtensa_funcUnit_lookup,
	xtensa_funcUnit_name, xtensa_funcUnit_num_copies): New prototypes.
	* elf/xtensa.h (R_XTENSA_DIFF8, R_XTENSA_DIFF16, R_XTENSA_DIFF32,
	R_XTENSA_SLOT*_OP, R_XTENSA_SLOT*_ALT): New relocations.
	(XTENSA_PROP_SEC_NAME): Define.
	(property_table_entry): Add flags field.
	(XTENSA_PROP_*, GET_XTENSA_PROP_*, SET_XTENSA_PROP_*): Define.

ld ChangeLog

	* ld.texinfo (Xtensa): Describe new linker relaxation to optimize
	assembler-generated longcall sequences.  Describe new --size-opt
	option.
	* emulparams/elf32xtensa.sh (OTHER_SECTIONS): Add .xt.prop section.
	* emultempl/xtensaelf.em (remove_section,
	replace_insn_sec_with_prop_sec, replace_instruction_table_sections,
	elf_xtensa_after_open): New.
	(OPTION_OPT_SIZEOPT, OPTION_LITERAL_MOVEMENT,
	OPTION_NO_LITERAL_MOVEMENT): Define.
	(elf32xtensa_size_opt, elf32xtensa_no_literal_movement): New globals.
	(PARSE_AND_LIST_LONGOPTS): Add size-opt and [no-]literal-movement.
	(PARSE_AND_LIST_OPTIONS): Add --size-opt.
	(PARSE_AND_LIST_ARGS_CASES): Handle OPTION_OPT_SIZEOPT,
	OPTION_LITERAL_MOVEMENT, and OPTION_NO_LITERAL_MOVEMENT.
	(LDEMUL_AFTER_OPEN): Set to elf_xtensa_after_open.
	* scripttempl/elfxtensa.sc: Update with changes from elf.sc.
	* Makefile.am (eelf32xtensa.c): Update dependencies.
	* Makefile.in: Regenerate.

ld/testsuite ChangeLog

	* ld-xtensa/lcall1.s: Use .literal directive.
	* ld-xtensa/lcall2.s: Align function entry.
	* ld-xtensa/coalesce2.s: Likewise.

opcodes ChangeLog

	* xtensa-dis.c (state_names): Delete.
	(fetch_data): Use xtensa_isa_maxlength.
	(print_xtensa_operand): Replace operand parameter with opcode/operand
	pair.  Remove print_sr_name parameter.  Use new xtensa-isa.h functions.
	(print_insn_xtensa): Use new xtensa-isa.h functions.  Handle multislot
	instruction bundles.  Use xmalloc instead of malloc.

1 files changed, 688 insertions, 134 deletions

diff --git a/include/xtensa-isa.h b/include/xtensa-isa.h
index 54f750c..2dc11b9 100644
--- a/include/xtensa-isa.h
+++ b/include/xtensa-isa.h
@@ -1,5 +1,5 @@
 /* Interface definition for configurable Xtensa ISA support.
-   Copyright 2003 Free Software Foundation, Inc.
+   Copyright 2003, 2004 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -20,209 +20,763 @@
 #ifndef XTENSA_LIBISA_H
 #define XTENSA_LIBISA_H
 
-/* Use the statically-linked version for the GNU tools.  */
-#define STATIC_LIBISA 1
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+/* Use the statically-linked version for the GNU tools.  */
+#define STATIC_LIBISA 1
+
+/* Version number: This is intended to help support code that works with
+   versions of this library from multiple Xtensa releases.  */
+
+#define XTENSA_ISA_VERSION 7000
+
 #ifndef uint32
 #define uint32 unsigned int
 #endif
 
-/* This file defines the interface to the Xtensa ISA library.  This library
-   contains most of the ISA-specific information for a particular Xtensa
-   processor.  For example, the set of valid instructions, their opcode
-   encodings and operand fields are all included here.  To support Xtensa's
-   configurability and user-defined instruction extensions (i.e., TIE), the
-   library is initialized by loading one or more dynamic libraries; only a
-   small set of interface code is present in the statically-linked portion
-   of the library.
+/* This file defines the interface to the Xtensa ISA library.  This
+   library contains most of the ISA-specific information for a
+   particular Xtensa processor.  For example, the set of valid
+   instructions, their opcode encodings and operand fields are all
+   included here.
 
-   This interface basically defines four abstract data types.
+   This interface basically defines a number of abstract data types.
 
    . an instruction buffer - for holding the raw instruction bits
    . ISA info - information about the ISA as a whole
-   . opcode info - information about individual instructions
-   . operand info - information about specific instruction operands
-
-   It would be nice to implement these as classes in C++, but the library is
-   implemented in C to match the expectations of the GNU tools.
-   Instead, the interface defines a set of functions to access each data
-   type.  With the exception of the instruction buffer, the internal
-   representations of the data structures are hidden.  All accesses must be
-   made through the functions defined here.  */
+   . instruction formats - instruction size and slot structure
+   . opcodes - information about individual instructions
+   . operands - information about register and immediate instruction operands
+   . stateOperands - information about processor state instruction operands
+   . interfaceOperands - information about interface instruction operands
+   . register files - register file information
+   . processor states - internal processor state information
+   . system registers - "special registers" and "user registers"
+   . interfaces - TIE interfaces that are external to the processor
+   . functional units - TIE shared functions
+
+   The interface defines a set of functions to access each data type.
+   With the exception of the instruction buffer, the internal
+   representations of the data structures are hidden.  All accesses must
+   be made through the functions defined here.  */
+
+typedef struct xtensa_isa_opaque { int unused; } *xtensa_isa;
+
+
+/* Opcodes, formats, regfiles, states, sysregs, ctypes, and protos are
+   represented here using sequential integers beginning with 0.  The
+   specific values are only fixed for a particular instantiation of an
+   xtensa_isa structure, so these values should only be used
+   internally.  */
 
-typedef void* xtensa_isa;
-typedef void* xtensa_operand;
-
-
-/* Opcodes are represented here using sequential integers beginning with 0.
-   The specific value used for a particular opcode is only fixed for a
-   particular instantiation of an xtensa_isa structure, so these values
-   should only be used internally.  */
 typedef int xtensa_opcode;
-
-/* Define a unique value for undefined opcodes ("static const int" doesn't
-   seem to work for this because EGCS 1.0.3 on i686-Linux without -O won't
-   allow it to be used as an initializer).  */
-#define XTENSA_UNDEFINED -1
+typedef int xtensa_format;
+typedef int xtensa_regfile;
+typedef int xtensa_state;
+typedef int xtensa_sysreg;
+typedef int xtensa_interface;
+typedef int xtensa_funcUnit;
 
 
-typedef int libisa_module_specifier;
+/* Define a unique value for undefined items.  */
 
-extern xtensa_isa xtensa_isa_init (void);
+#define XTENSA_UNDEFINED -1
 
 
+/* Overview of using this interface to decode/encode instructions:
+
+   Each Xtensa instruction is associated with a particular instruction
+   format, where the format defines a fixed number of slots for
+   operations.  The formats for the core Xtensa ISA have only one slot,
+   but FLIX instructions may have multiple slots.  Within each slot,
+   there is a single opcode and some number of associated operands.
+
+   The encoding and decoding functions operate on instruction buffers,
+   not on the raw bytes of the instructions.  The same instruction
+   buffer data structure is used for both entire instructions and
+   individual slots in those instructions -- the contents of a slot need
+   to be extracted from or inserted into the buffer for the instruction
+   as a whole.
+
+   Decoding an instruction involves first finding the format, which
+   identifies the number of slots, and then decoding each slot
+   separately.  A slot is decoded by finding the opcode and then using
+   the opcode to determine how many operands there are.  For example:
+
+   xtensa_insnbuf_from_chars
+   xtensa_format_decode
+   for each slot {
+     xtensa_format_get_slot
+     xtensa_opcode_decode
+     for each operand {
+       xtensa_operand_get_field
+       xtensa_operand_decode
+     }
+   }
+
+   Encoding an instruction is roughly the same procedure in reverse:
+
+   xtensa_format_encode
+   for each slot {
+     xtensa_opcode_encode
+     for each operand {
+       xtensa_operand_encode
+       xtensa_operand_set_field
+     }
+     xtensa_format_set_slot
+   }
+   xtensa_insnbuf_to_chars
+*/
+
+
+/* Error handling.  */
+
+/* Error codes.  The code for the most recent error condition can be
+   retrieved with the "errno" function.  For any result other than
+   xtensa_isa_ok, an error message containing additional information
+   about the problem can be retrieved using the "error_msg" function.
+   The error messages are stored in an internal buffer, which should not
+   should be freed and may be overwritten by subsequent operations.  */
+
+typedef enum xtensa_isa_status_enum
+{
+  xtensa_isa_ok = 0,
+  xtensa_isa_bad_format,
+  xtensa_isa_bad_slot,
+  xtensa_isa_bad_opcode,
+  xtensa_isa_bad_operand,
+  xtensa_isa_bad_field,
+  xtensa_isa_bad_iclass,
+  xtensa_isa_bad_regfile,
+  xtensa_isa_bad_sysreg,
+  xtensa_isa_bad_state,
+  xtensa_isa_bad_interface,
+  xtensa_isa_bad_funcUnit,
+  xtensa_isa_wrong_slot,
+  xtensa_isa_no_field,
+  xtensa_isa_out_of_memory,
+  xtensa_isa_buffer_overflow,
+  xtensa_isa_internal_error,
+  xtensa_isa_bad_value
+} xtensa_isa_status;
+
+extern xtensa_isa_status
+xtensa_isa_errno (xtensa_isa isa);
+
+extern char *
+xtensa_isa_error_msg (xtensa_isa isa);
+
+
 /* Instruction buffers.  */
 
 typedef uint32 xtensa_insnbuf_word;
 typedef xtensa_insnbuf_word *xtensa_insnbuf;
 
-/* Get the size in words of the xtensa_insnbuf array.  */
-extern int xtensa_insnbuf_size (xtensa_isa); 
 
-/* Allocate (with malloc) an xtensa_insnbuf of the right size.  */
-extern xtensa_insnbuf xtensa_insnbuf_alloc (xtensa_isa);
+/* Get the size in "insnbuf_words" of the xtensa_insnbuf array.  */
 
-/* Release (with free) an xtensa_insnbuf of the right size.  */
-extern void xtensa_insnbuf_free (xtensa_insnbuf);
+extern int
+xtensa_insnbuf_size (xtensa_isa isa); 
 
-/* Inward and outward conversion from memory images (byte streams) to our
-   internal instruction representation.  */
-extern void xtensa_insnbuf_to_chars (xtensa_isa, const xtensa_insnbuf,
-				     char *);
 
-extern void xtensa_insnbuf_from_chars (xtensa_isa, xtensa_insnbuf,
-				       const char *);
+/* Allocate an xtensa_insnbuf of the right size.  */
 
+extern xtensa_insnbuf
+xtensa_insnbuf_alloc (xtensa_isa isa);
 
-/* ISA information.  */
 
-/* Load the ISA information from a shared library.  If successful, this returns
-   a value which identifies the ISA for use in subsequent calls to the ISA
-   library; otherwise, it returns NULL.  Multiple ISAs can be loaded to support
-   heterogeneous multiprocessor systems.  */
-extern xtensa_isa xtensa_load_isa (libisa_module_specifier);
+/* Release an xtensa_insnbuf.  */
+
+extern void
+xtensa_insnbuf_free (xtensa_isa isa, xtensa_insnbuf buf);
+
 
-/* Extend an existing set of ISA information by loading an additional shared
-   library of ISA information.  This is primarily intended for loading TIE
-   extensions.  If successful, the return value is non-zero.  */
-extern int xtensa_extend_isa (xtensa_isa, libisa_module_specifier);
+/* Conversion between raw memory (char arrays) and our internal
+   instruction representation.  This is complicated by the Xtensa ISA's
+   variable instruction lengths.  When converting to chars, the buffer
+   must contain a valid instruction so we know how many bytes to copy;
+   thus, the "to_chars" function returns the number of bytes copied or
+   XTENSA_UNDEFINED on error.  The "from_chars" function first reads the
+   minimal number of bytes required to decode the instruction length and
+   then proceeds to copy the entire instruction into the buffer; if the
+   memory does not contain a valid instruction, it copies the maximum
+   number of bytes required for the longest Xtensa instruction.  The
+   "num_chars" argument may be used to limit the number of bytes that
+   can be read or written.  Otherwise, if "num_chars" is zero, the
+   functions may read or write past the end of the code.  */
 
-/* The default ISA.  This variable is set automatically to the ISA most
-   recently loaded and is provided as a convenience.  An exception is the GNU
-   opcodes library, where there is a fixed interface that does not allow
-   passing the ISA as a parameter and the ISA must be taken from this global
-   variable.  (Note: Since this variable is just a convenience, it is not
-   exported when libisa is built as a DLL, due to the hassle of dealing with
-   declspecs.)  */
-extern xtensa_isa xtensa_default_isa;
+extern int
+xtensa_insnbuf_to_chars (xtensa_isa isa, const xtensa_insnbuf insn,
+			 char *cp, int num_chars);
+
+extern void
+xtensa_insnbuf_from_chars (xtensa_isa isa, xtensa_insnbuf insn,
+			   const char *cp, int num_chars);
+
+
+/* ISA information.  */
+
+/* Initialize the ISA information.  */
+
+extern xtensa_isa
+xtensa_isa_init (xtensa_isa_status *errno_p, char **error_msg_p);
 
 
 /* Deallocate an xtensa_isa structure.  */
-extern void xtensa_isa_free (xtensa_isa);
+
+extern void
+xtensa_isa_free (xtensa_isa isa);
+
 
 /* Get the maximum instruction size in bytes.  */
-extern int xtensa_insn_maxlength (xtensa_isa); 
 
-/* Get the total number of opcodes for this processor.  */
-extern int xtensa_num_opcodes (xtensa_isa);
+extern int
+xtensa_isa_maxlength (xtensa_isa isa); 
+
+
+/* Decode the length in bytes of an instruction in raw memory (not an
+   insnbuf).  This function reads only the minimal number of bytes
+   required to decode the instruction length.  Returns
+   XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_isa_length_from_chars (xtensa_isa isa, const char *cp);
+
+
+/* Get the number of stages in the processor's pipeline.  The pipeline
+   stage values returned by other functions in this library will range
+   from 0 to N-1, where N is the value returned by this function.
+   Note that the stage numbers used here may not correspond to the
+   actual processor hardware, e.g., the hardware may have additional
+   stages before stage 0.  Returns XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_isa_num_pipe_stages (xtensa_isa isa); 
+
+
+/* Get the number of various entities that are defined for this processor.  */
+
+extern int
+xtensa_isa_num_formats (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_opcodes (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_regfiles (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_states (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_sysregs (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_interfaces (xtensa_isa isa);
+
+extern int
+xtensa_isa_num_funcUnits (xtensa_isa isa);
+
+
+/* Instruction formats.  */
+
+/* Get the name of a format.  Returns null on error.  */
+
+extern const char *
+xtensa_format_name (xtensa_isa isa, xtensa_format fmt);
+
+
+/* Given a format name, return the format number.  Returns
+   XTENSA_UNDEFINED if the name is not a valid format.  */
+
+extern xtensa_format
+xtensa_format_lookup (xtensa_isa isa, const char *fmtname);
+
+
+/* Decode the instruction format from a binary instruction buffer.
+   Returns XTENSA_UNDEFINED if the format is not recognized.  */
+
+extern xtensa_format
+xtensa_format_decode (xtensa_isa isa, const xtensa_insnbuf insn);
+
+
+/* Set the instruction format field(s) in a binary instruction buffer.
+   All the other fields are set to zero.  Returns non-zero on error.  */
+
+extern int
+xtensa_format_encode (xtensa_isa isa, xtensa_format fmt, xtensa_insnbuf insn);
+
+
+/* Find the length (in bytes) of an instruction.  Returns
+   XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_format_length (xtensa_isa isa, xtensa_format fmt);
+
+
+/* Get the number of slots in an instruction.  Returns XTENSA_UNDEFINED
+   on error.  */
+
+extern int
+xtensa_format_num_slots (xtensa_isa isa, xtensa_format fmt);
+
+
+/* Get the opcode for a no-op in a particular slot.
+   Returns XTENSA_UNDEFINED on error.  */
+
+extern xtensa_opcode
+xtensa_format_slot_nop_opcode (xtensa_isa isa, xtensa_format fmt, int slot);
+
+
+/* Get the bits for a specified slot out of an insnbuf for the
+   instruction as a whole and put them into an insnbuf for that one
+   slot, and do the opposite to set a slot.  Return non-zero on error.  */
+
+extern int
+xtensa_format_get_slot (xtensa_isa isa, xtensa_format fmt, int slot,
+			const xtensa_insnbuf insn, xtensa_insnbuf slotbuf);
+
+extern int
+xtensa_format_set_slot (xtensa_isa isa, xtensa_format fmt, int slot,
+			xtensa_insnbuf insn, const xtensa_insnbuf slotbuf);
+
+
+/* Opcode information.  */
 
 /* Translate a mnemonic name to an opcode.  Returns XTENSA_UNDEFINED if
    the name is not a valid opcode mnemonic.  */
-extern xtensa_opcode xtensa_opcode_lookup (xtensa_isa, const char *);
 
-/* Decode a binary instruction buffer.  Returns the opcode or
-   XTENSA_UNDEFINED if the instruction is illegal.  */
-extern xtensa_opcode xtensa_decode_insn (xtensa_isa, const xtensa_insnbuf);
+extern xtensa_opcode
+xtensa_opcode_lookup (xtensa_isa isa, const char *opname);
 
 
-/* Opcode information.  */
+/* Decode the opcode for one instruction slot from a binary instruction
+   buffer.  Returns the opcode or XTENSA_UNDEFINED if the opcode is
+   illegal.  */
+
+extern xtensa_opcode
+xtensa_opcode_decode (xtensa_isa isa, xtensa_format fmt, int slot,
+		      const xtensa_insnbuf slotbuf);
+
 
-/* Set the opcode field(s) in a binary instruction buffer.  The operand
-   fields are set to zero.  */
-extern void xtensa_encode_insn (xtensa_isa, xtensa_opcode, xtensa_insnbuf);
+/* Set the opcode field(s) for an instruction slot.  All other fields
+   in the slot are set to zero.  Returns non-zero if the opcode cannot
+   be encoded.  */
 
-/* Get the mnemonic name for an opcode.  */
-extern const char * xtensa_opcode_name (xtensa_isa, xtensa_opcode);
+extern int
+xtensa_opcode_encode (xtensa_isa isa, xtensa_format fmt, int slot,
+		      xtensa_insnbuf slotbuf, xtensa_opcode opc);
 
-/* Find the length (in bytes) of an instruction.  */
-extern int xtensa_insn_length (xtensa_isa, xtensa_opcode);
 
-/* Find the length of an instruction by looking only at the first byte.  */
-extern int xtensa_insn_length_from_first_byte (xtensa_isa, char);
+/* Get the mnemonic name for an opcode.  Returns null on error.  */
 
-/* Find the number of operands for an instruction.  */
-extern int xtensa_num_operands (xtensa_isa, xtensa_opcode);
+extern const char *
+xtensa_opcode_name (xtensa_isa isa, xtensa_opcode opc);
 
-/* Get the information about operand number "opnd" of a particular opcode.  */
-extern xtensa_operand xtensa_get_operand (xtensa_isa, xtensa_opcode, int);
 
+/* Check various properties of opcodes.  These functions return 0 if
+   the condition is false, 1 if the condition is true, and
+   XTENSA_UNDEFINED on error.  The instructions are classified as
+   follows:
+
+   branch: conditional branch; may fall through to next instruction (B*)
+   jump: unconditional branch (J, JX, RET*, RF*)
+   loop: zero-overhead loop (LOOP*)
+   call: unconditional call; control returns to next instruction (CALL*)
+
+   For the opcodes that affect control flow in some way, the branch
+   target may be specified by an immediate operand or it may be an
+   address stored in a register.  You can distinguish these by
+   checking if the instruction has a PC-relative immediate
+   operand.  */
+
+extern int
+xtensa_opcode_is_branch (xtensa_isa isa, xtensa_opcode opc);
+
+extern int
+xtensa_opcode_is_jump (xtensa_isa isa, xtensa_opcode opc);
+
+extern int
+xtensa_opcode_is_loop (xtensa_isa isa, xtensa_opcode opc);
+
+extern int
+xtensa_opcode_is_call (xtensa_isa isa, xtensa_opcode opc);
+
+
+/* Find the number of ordinary operands, state operands, and interface
+   operands for an instruction.  These return XTENSA_UNDEFINED on
+   error.  */
+
+extern int
+xtensa_opcode_num_operands (xtensa_isa isa, xtensa_opcode opc);
+
+
+extern int
+xtensa_opcode_num_stateOperands (xtensa_isa isa, xtensa_opcode opc);
+
+extern int
+xtensa_opcode_num_interfaceOperands (xtensa_isa isa, xtensa_opcode opc);
+
+
+/* Get functional unit usage requirements for an opcode.  Each "use"
+   is identified by a <functional unit, pipeline stage> pair.  The
+   "num_funcUnit_uses" function returns the number of these "uses" or
+   XTENSA_UNDEFINED on error.  The "funcUnit_use" function returns
+   a pointer to a "use" pair or null on error.  */
+
+typedef struct xtensa_funcUnit_use_struct
+{
+  xtensa_funcUnit unit;
+  int stage;
+} xtensa_funcUnit_use;
+
+extern int
+xtensa_opcode_num_funcUnit_uses (xtensa_isa isa, xtensa_opcode opc);
+
+extern xtensa_funcUnit_use *
+xtensa_opcode_funcUnit_use (xtensa_isa isa, xtensa_opcode opc, int u);
+
+
 /* Operand information.  */
 
-/* Find the kind of operand.  There are three possibilities:
-   1) PC-relative immediates (e.g., "l", "L").  These can be identified with
-      the xtensa_operand_isPCRelative function.
-   2) non-PC-relative immediates ("i").
-   3) register-file short names (e.g., "a", "b", "m" and others defined
-      via TIE).  */
-extern char * xtensa_operand_kind (xtensa_operand);
+/* Get the name of an operand.  Returns null on error.  */
+
+extern const char *
+xtensa_operand_name (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
+
+/* Some operands are "invisible", i.e., not explicitly specified in
+   assembly language.  When assembling an instruction, you need not set
+   the values of invisible operands, since they are either hardwired or
+   derived from other field values.  The values of invisible operands
+   can be examined in the same way as other operands, but remember that
+   an invisible operand may get its value from another visible one, so
+   the entire instruction must be available before examining the
+   invisible operand values.  This function returns 1 if an operand is
+   visible, 0 if it is invisible, or XTENSA_UNDEFINED on error.  Note
+   that whether an operand is visible is orthogonal to whether it is
+   "implicit", i.e., whether it is encoded in a field in the
+   instruction.  */
+
+extern int
+xtensa_operand_is_visible (xtensa_isa isa, xtensa_opcode opc, int opnd);
 
-/* Check if an operand is an input ('<'), output ('>'), or inout ('=')
+
+/* Check if an operand is an input ('i'), output ('o'), or inout ('m')
    operand.  Note: The output operand of a conditional assignment
-   (e.g., movnez) appears here as an inout ('=') even if it is declared
-   in the TIE code as an output ('>'); this allows the compiler to
-   properly handle register allocation for conditional assignments.  */
-extern char xtensa_operand_inout (xtensa_operand);
+   (e.g., movnez) appears here as an inout ('m') even if it is declared
+   in the TIE code as an output ('o'); this allows the compiler to
+   properly handle register allocation for conditional assignments.
+   Returns 0 on error.  */
+
+extern char
+xtensa_operand_inout (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
 
 /* Get and set the raw (encoded) value of the field for the specified
    operand.  The "set" function does not check if the value fits in the
-   field; that is done by the "encode" function below.  */
-extern uint32 xtensa_operand_get_field (xtensa_operand, const xtensa_insnbuf);
+   field; that is done by the "encode" function below.  Both of these
+   functions return non-zero on error, e.g., if the field is not defined
+   for the specified slot.  */
+
+extern int
+xtensa_operand_get_field (xtensa_isa isa, xtensa_opcode opc, int opnd,
+			  xtensa_format fmt, int slot,
+			  const xtensa_insnbuf slotbuf, uint32 *valp);
 
-extern void xtensa_operand_set_field (xtensa_operand, xtensa_insnbuf, uint32);
+extern int 
+xtensa_operand_set_field (xtensa_isa isa, xtensa_opcode opc, int opnd,
+			  xtensa_format fmt, int slot,
+			  xtensa_insnbuf slotbuf, uint32 val);
 
 
-/* Encode and decode operands.  The raw bits in the operand field
-   may be encoded in a variety of different ways.  These functions hide the
-   details of that encoding.  The encode function has a special return type
-   (xtensa_encode_result) to indicate success or the reason for failure; the
-   encoded value is returned through the argument pointer.  The decode function
-   has no possibility of failure and returns the decoded value.  */
+/* Encode and decode operands.  The raw bits in the operand field may
+   be encoded in a variety of different ways.  These functions hide
+   the details of that encoding.  The result values are returned through
+   the argument pointer.  The return value is non-zero on error.  */
 
-typedef enum
-{
-  xtensa_encode_result_ok,
-  xtensa_encode_result_align,
-  xtensa_encode_result_not_in_table,
-  xtensa_encode_result_too_low,
-  xtensa_encode_result_too_high,
-  xtensa_encode_result_not_ok,
-  xtensa_encode_result_max = xtensa_encode_result_not_ok
-} xtensa_encode_result;
+extern int
+xtensa_operand_encode (xtensa_isa isa, xtensa_opcode opc, int opnd,
+		       uint32 *valp);
+
+extern int
+xtensa_operand_decode (xtensa_isa isa, xtensa_opcode opc, int opnd,
+		       uint32 *valp);
+
+
+/* An operand may be either a register operand or an immediate of some
+   sort (e.g., PC-relative or not).  The "is_register" function returns
+   0 if the operand is an immediate, 1 if it is a register, and
+   XTENSA_UNDEFINED on error.  The "regfile" function returns the
+   regfile for a register operand, or XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_operand_is_register (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
+extern xtensa_regfile
+xtensa_operand_regfile (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
+
+/* Register operands may span multiple consecutive registers, e.g., a
+   64-bit data type may occupy two 32-bit registers.  Only the first
+   register is encoded in the operand field.  This function specifies
+   the number of consecutive registers occupied by this operand.  For
+   non-register operands, the return value is undefined.  Returns
+   XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_operand_num_regs (xtensa_isa isa, xtensa_opcode opc, int opnd);
+				 
+
+/* Some register operands do not completely identify the register being
+   accessed.  For example, the operand value may be added to an internal
+   state value.  By definition, this implies that the corresponding
+   regfile is not allocatable.  Unknown registers should generally be
+   treated with worst-case assumptions.  The function returns 0 if the
+   register value is unknown, 1 if known, and XTENSA_UNDEFINED on
+   error.  */
+
+extern int
+xtensa_operand_is_known_reg (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
+
+/* Check if an immediate operand is PC-relative.  Returns 0 for register
+   operands and non-PC-relative immediates, 1 for PC-relative
+   immediates, and XTENSA_UNDEFINED on error.  */
+ 
+extern int
+xtensa_operand_is_PCrelative (xtensa_isa isa, xtensa_opcode opc, int opnd);
+
+
+/* For PC-relative offset operands, the interpretation of the offset may
+   vary between opcodes, e.g., is it relative to the current PC or that
+   of the next instruction?  The following functions are defined to
+   perform PC-relative relocations and to undo them (as in the
+   disassembler).  The "do_reloc" function takes the desired address
+   value and the PC of the current instruction and sets the value to the
+   corresponding PC-relative offset (which can then be encoded and
+   stored into the operand field).  The "undo_reloc" function takes the
+   unencoded offset value and the current PC and sets the value to the
+   appropriate address.  The return values are non-zero on error.  Note
+   that these functions do not replace the encode/decode functions; the
+   operands must be encoded/decoded separately and the encode functions
+   are responsible for detecting invalid operand values.  */
+
+extern int
+xtensa_operand_do_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd,
+			 uint32 *valp, uint32 pc);
+
+extern int
+xtensa_operand_undo_reloc (xtensa_isa isa, xtensa_opcode opc, int opnd,
+			   uint32 *valp, uint32 pc);
+
+
+/* State Operands.  */
+
+/* Get the state accessed by a state operand.  Returns XTENSA_UNDEFINED
+   on error.  */
+
+extern xtensa_state
+xtensa_stateOperand_state (xtensa_isa isa, xtensa_opcode opc, int stOp);
+
+
+/* Check if a state operand is an input ('i'), output ('o'), or inout
+   ('m') operand.  Returns 0 on error.  */
+
+extern char
+xtensa_stateOperand_inout (xtensa_isa isa, xtensa_opcode opc, int stOp);
+
+
+/* Interface Operands.  */
+
+/* Get the external interface accessed by an interface operand.
+   Returns XTENSA_UNDEFINED on error.  */
+
+extern xtensa_interface
+xtensa_interfaceOperand_interface (xtensa_isa isa, xtensa_opcode opc,
+				   int ifOp);
+
+
+/* Register Files.  */
+
+/* Regfiles include both "real" regfiles and "views", where a view
+   allows a group of adjacent registers in a real "parent" regfile to be
+   viewed as a single register.  A regfile view has all the same
+   properties as its parent except for its (long) name, bit width, number
+   of entries, and default ctype.  You can use the parent function to
+   distinguish these two classes.  */
+
+/* Look up a regfile by either its name or its abbreviated "short name".
+   Returns XTENSA_UNDEFINED on error.  The "lookup_shortname" function
+   ignores "view" regfiles since they always have the same shortname as
+   their parents.  */
+
+extern xtensa_regfile
+xtensa_regfile_lookup (xtensa_isa isa, const char *name);
+
+extern xtensa_regfile
+xtensa_regfile_lookup_shortname (xtensa_isa isa, const char *shortname);
+
+
+/* Get the name or abbreviated "short name" of a regfile.
+   Returns null on error.  */
+
+extern const char *
+xtensa_regfile_name (xtensa_isa isa, xtensa_regfile rf);
+
+extern const char *
+xtensa_regfile_shortname (xtensa_isa isa, xtensa_regfile rf);
+
+
+/* Get the parent regfile of a "view" regfile.  If the regfile is not a
+   view, the result is the same as the input parameter.  Returns
+   XTENSA_UNDEFINED on error.  */
+
+extern xtensa_regfile
+xtensa_regfile_view_parent (xtensa_isa isa, xtensa_regfile rf);
+
+
+/* Get the bit width of a regfile or regfile view.
+   Returns XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_regfile_num_bits (xtensa_isa isa, xtensa_regfile rf);
+
+
+/* Get the number of regfile entries.  Returns XTENSA_UNDEFINED on
+   error.  */
+
+extern int
+xtensa_regfile_num_entries (xtensa_isa isa, xtensa_regfile rf);
+
+
+/* Processor States.  */
+
+/* Look up a state by name.  Returns XTENSA_UNDEFINED on error.  */
+
+extern xtensa_state
+xtensa_state_lookup (xtensa_isa isa, const char *name);
+
+
+/* Get the name for a processor state.  Returns null on error.  */
+
+extern const char *
+xtensa_state_name (xtensa_isa isa, xtensa_state st);
+
+
+/* Get the bit width for a processor state.
+   Returns XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_state_num_bits (xtensa_isa isa, xtensa_state st);
+
+
+/* Check if a state is exported from the processor core.  Returns 0 if
+   the condition is false, 1 if the condition is true, and
+   XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_state_is_exported (xtensa_isa isa, xtensa_state st);
+
+
+/* Sysregs ("special registers" and "user registers").  */
+
+/* Look up a register by its number and whether it is a "user register"
+   or a "special register".  Returns XTENSA_UNDEFINED if the sysreg does
+   not exist.  */
+
+extern xtensa_sysreg
+xtensa_sysreg_lookup (xtensa_isa isa, int num, int is_user);
+
+
+/* Check if there exists a sysreg with a given name.
+   If not, this function returns XTENSA_UNDEFINED.  */
+
+extern xtensa_sysreg
+xtensa_sysreg_lookup_name (xtensa_isa isa, const char *name);
+
+
+/* Get the name of a sysreg.  Returns null on error.  */
+
+extern const char *
+xtensa_sysreg_name (xtensa_isa isa, xtensa_sysreg sysreg);
+
+
+/* Get the register number.  Returns XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_sysreg_number (xtensa_isa isa, xtensa_sysreg sysreg);
+
+
+/* Check if a sysreg is a "special register" or a "user register".
+   Returns 0 for special registers, 1 for user registers and
+   XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_sysreg_is_user (xtensa_isa isa, xtensa_sysreg sysreg);
+
+
+/* Interfaces.  */
+
+/* Find an interface by name.  The return value is XTENSA_UNDEFINED if
+   the specified interface is not found.  */
+
+extern xtensa_interface
+xtensa_interface_lookup (xtensa_isa isa, const char *ifname);
+
+
+/* Get the name of an interface.  Returns null on error.  */
+
+extern const char *
+xtensa_interface_name (xtensa_isa isa, xtensa_interface intf);
+
+
+/* Get the bit width for an interface.
+   Returns XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_interface_num_bits (xtensa_isa isa, xtensa_interface intf);
+
+
+/* Check if an interface is an input ('i') or output ('o') with respect
+   to the Xtensa processor core.  Returns 0 on error.  */
+
+extern char
+xtensa_interface_inout (xtensa_isa isa, xtensa_interface intf);
+
+
+/* Check if accessing an interface has potential side effects.
+   Currently "data" interfaces have side effects and "control"
+   interfaces do not.  Returns 1 if there are side effects, 0 if not,
+   and XTENSA_UNDEFINED on error.  */
+
+extern int
+xtensa_interface_has_side_effect (xtensa_isa isa, xtensa_interface intf);
+
+
+/* Functional Units.  */
+
+/* Find a functional unit by name.  The return value is XTENSA_UNDEFINED if
+   the specified unit is not found.  */
+
+extern xtensa_funcUnit
+xtensa_funcUnit_lookup (xtensa_isa isa, const char *fname);
 
-extern xtensa_encode_result xtensa_operand_encode (xtensa_operand, uint32 *);
 
-extern uint32 xtensa_operand_decode (xtensa_operand, uint32);
+/* Get the name of a functional unit.  Returns null on error.  */
 
+extern const char *
+xtensa_funcUnit_name (xtensa_isa isa, xtensa_funcUnit fun);
 
-/* For PC-relative offset operands, the interpretation of the offset may vary
-   between opcodes, e.g., is it relative to the current PC or that of the next
-   instruction?  The following functions are defined to perform PC-relative
-   relocations and to undo them (as in the disassembler).  The first function
-   takes the desired address and the PC of the current instruction and returns
-   the unencoded value to be stored in the offset field.  The second function
-   takes the unencoded offset value and the current PC and returns the address.
-   Note that these functions do not replace the encode/decode functions; the
-   operands must be encoded/decoded separately.  */
 
-extern int xtensa_operand_isPCRelative (xtensa_operand);
+/* Functional units may be replicated.  See how many instances of a
+   particular function unit exist.  Returns XTENSA_UNDEFINED on error.  */
 
-extern uint32 xtensa_operand_do_reloc (xtensa_operand, uint32, uint32);
+extern int
+xtensa_funcUnit_num_copies (xtensa_isa isa, xtensa_funcUnit fun);
 
-extern uint32 xtensa_operand_undo_reloc	(xtensa_operand, uint32, uint32);
 
 #ifdef __cplusplus
 }