changelog

这个是LINUX下的GDB调度工具的源码

	(frv_insn_fetch_buffer): New global variable.

2000-06-12  Dave Brolley  <[e-mail]>

	* mloop.in (fetch_buffer): New static struct.
	(@cpu@_simulate_insn_prefetch): Rewritten.
	* cache.c (frv_cache_request_invalidate): Don't invalidate return
	buffer.
	(address_interference): Defer to any WAR request in either pipeline.

2000-06-09  Dave Brolley  <[e-mail]>

	* pipeline.c (insns_in_slot): New Array.
	(frv_pipeline_add_insn): Call COUNT_INSNS_IN_SLOT.
	* options.c (frv_options): Remove 'NONBLOCK' argument from data-cache
	option.
	(parse_cache_option): New function.
	(frv_option_handler): Call parse_cache_option.
	* frv.c (vliw_branch_taken): New variable.
	(vliw_load_stall): New variable.
	(handle_resource_wait): Update vliw_load_stall.
	(frvbf_model_insn_before): Initialize vliw_branch_taken and
	vliw_load_stall.
	(frvbf_model_insn_after): Increment PROFILE_MODEL_LOAD_STALL_CYCLES.
	(load_wait_for_FR): Update vliw_load_stall.
	(load_wait_for_GR): Update vliw_load_stall.
	(load_wait_for_FRdouble): Update vliw_load_stall.
	(load_wait_for_GRdouble): Update vliw_load_stall.
	(frvbf_model_fr500_u_branch): Count branches taken and not taken.
	(slot_names): New static array.
	(print_parallel): Now takes second argument 'verbose'. Print cycles per
	VLIW insn and instructions per cycle. Also tabulate the number of insns
	in each type of VLIW slot.
	(frv_profile_info): Call print_parallel with new second argument.
	* frv-sim.h (insn_in_slot): New array.
	(COUNT_INSNS_IN_SLOT): New macro.
	(INSNS_IN_SLOT): New macro.
	* cache.c: Remove references to non_blocking_count. Remove references to
	last_was_hit. Remove references to req_none.
	(handle_req_store): Adjust statistics before requeuing the store
	request.
	(handle_req_WAR): Don't let the WAR request affect the cache statistics.
	* cache.h: Remove references to non_blocking_count. Remove references to
	last_was_hit. Remove references to req_none.
	* model.c: Regenerate.

2000-06-08  Dave Brolley  <[e-mail]>

	* frv.c (request_complete): Copy load data from the correct return
	buffer.

2000-06-07  Dave Brolley  <[e-mail]>

	* traps.c (frv_core_signal): Call frv_term before exiting.
	(frv_itrap): Call frv_term before exiting.
	(next_available_nesr): Make sure NECR is implemented before reading it.
	(next_valid_nesr): Ditto.
	(frvbf_check_non_excepting_load): Ditto.
	(frvbf_clear_ne_flags): Ditto.
	(frvbf_commit): Ditto.
	(frvbf_check_recovering_store): Delay cache operation if 'model_insn'.
	* sim-main.h (_sim_cpu): Add load_address, load_length, load_flag and
	store_flag members.
	(CPU_LOAD_ADDRESS): New macro.
	(CPU_LOAD_LENGTH): New macro.
	(CPU_LOAD_SIGNED): New macro.
	(CPU_LOAD_LOCK): New macro.
	* reset.c (frv_term): New function.
	(frv_power_on_reset): Use SETMEMSI if the cache is not enabled.
	(frv_hardware_reset): Use SETMEMSI if the cache is not enabled.
	(frv_software_reset): Use SETMEMSI if the cache is not enabled.
	* mloop.in (execute): Call FRV_COUNT_CYCLES to decide whether to model
	the insn. Model the insn in two passes. One before and one after
	execution.
	(cache_reqno): new static variable.
	(@cpu@_simulate_insn_prefetch): Model fetch latency by waiting for the
	cache rather than assuming a fixed latency.
	(xinit): Turn on PROFILE_MODEL_P before each vliw insn if the timer is
	enabled so that modeling data is collected by cgen during execution.
	(full-exec): Restore PROFILE_MODEL_P after each vliw insn.
	* memory.c (data_non_cache_access): Removed.
	(insn_non_cache_access): Removed.
	(frvbf_read_mem_QI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_UQI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_HI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_UHI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_SI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_DI): Delay read operation if 'model_insn'.
	(frvbf_read_mem_DF): Delay read operation if 'model_insn'.
	(frvbf_read_imem_USI): Read the cache or ememory passively.
	(frvbf_write_mem_QI): Don't check for non-cache access here.
	(frvbf_write_mem_UQI): Call frvbf_write_mem_QI.
	(frvbf_write_mem_HI): Don't check for non-cache access here.
	(frvbf_write_mem_UHI): Call frvbf_write_mem_QI.
	(frvbf_write_mem_SI): Don't check for non-cache access here.
	(frvbf_write_mem_DI): Don't check for non-cache access here.
	(frvbf_write_mem_DF): Don't check for non-cache access here.
	(frvbf_mem_set_QI): Use cycle-accurate cache write if 'model_insn'.
	(frvbf_mem_set_HI): Use cycle-accurate cache write if 'model_insn'.
	(frvbf_mem_set_SI): Use cycle-accurate cache write if 'model_insn'.
	(frvbf_mem_set_DI): Use cycle-accurate cache write if 'model_insn'.
	(frvbf_mem_set_DF): Use cycle-accurate cache write if 'model_insn'.
	(frvbf_mem_set_XI): Use cycle-accurate cache write if 'model_insn'.
	* interrupts.c (check_reset): Read the cache and memory passively.
	(frv_program_or_software_interrupt): Call frv_term before calling
	sim_engine_halt.
	* frv.c (all modeling functions): Break into two passes. One before
	execuetion and one after. call load_wait_for_* for all GR and FR
	registers.
	(frvbf_load_quad_GR): Delay performing the load if 'model_insn'.
	(frvbf_load_quad_FRint): Delay performing the load if 'model_insn'.
	(frvbf_load_quad_CPR): Delay performing the load if 'model_insn'.
	(frvbf_insn_cache_preload): Delay cache operation if 'model_insn'.
	(frvbf_data_cache_preload): Delay cache operation if 'model_insn'.
	(frvbf_insn_cache_unlock): Delay cache operation if 'model_insn'.
	(frvbf_data_cache_unlock): Delay cache operation if 'model_insn'.
	(frvbf_insn_cache_invalidate): Delay cache operation if 'model_insn'.
	(frvbf_data_cache_invalidate): Delay cache operation if 'model_insn'.
	(frvbf_data_cache_flush): Delay cache operation if 'model_insn'.
	(model_insn): New global variable.
	(fr_ptime): New array.
	(cache_request): New enumeration.
	(CACHE_QUEUE_ELEMENT): New struct type.
	(CACHE_QUEUE_SIZE): New macro.
	(cache_queue): New static struct.
	(request_cache_load): New function.
	(request_cache_flush): New function.
	(request_cache_invalidate): New function.
	(request_cache_preload): New function.
	(request_cache_unlock): New function.
	(submit_cache_request): New function.
	(activate_cache_requests): New function.
	(load_pending_for_register): New function.
	(flush_pending_for_address): New function.
	(remove_cache_queue_element): New function.
	(copy_load_data): New function.
	(request_complete): New function.
	(run_caches): New function.
	(frv_model_trace_wait_cycles): New function.
	(wait_for_flush): New function.
	(frvbf_model_insn_before): Insn prefect wait now modeled in
	frvbf_simulate_insn_prefetch. Incremement vliw_insns here. Call
	wait_for_flush.
	(frvbf_model_insn_after): Call activate_cache_requests. Don't increment
	vliw_insns here anymore.
	(update_FR_latency_for_load): New function.
	(update_FRdouble_latency_for_load): New function.
	(update_FR_ptime): New function.
	(update_FRdouble_ptime): New function.
	(update_GR_latency_for_swap): New function.
	(load_wait_for_GR): New function.
	(load_wait_for_FR): New function.
	(load_wait_for_GRdouble): New function.
	(load_wait_for_FRdouble): New function.
	(frvbf_model_fr500_u_ici): New function.
	(frvbf_model_fr500_u_dci): New function.
	(frvbf_model_fr500_u_dcf): New function.
	(frvbf_model_fr500_u_icpl): New function.
	(frvbf_model_fr500_u_dcpl): New function.
	(frvbf_model_fr500_u_icul): New function.
	(frvbf_model_fr500_u_dcul): New function.
	* frv-sim.h (frv_term): New function.
	(insn_non_cache_access): Removed.
	(FRV_COUNT_CYCLES): New macro.
	(frv_save_peofile_model_p): New global variable.
	(model_insn): New enumerated global variable.
	(frv_model_advance_cycles): New function.
	(frv_model_trace_wait_cycles): New function.
	* cache.h (FRV_CACHE_REQUEST_KIND): New enumeration.
	(FRV_CACHE_WAR_REQUEST): New struct type.
	(FRV_CACHE_STORE_REQUEST): New struct type.
	(FRV_CACHE_INVALIDATE_REQUEST): New struct type.
	(FRV_CACHE_PRELOAD_REQUEST): New struct type.
	(FRV_CACHE_REQUEST): New struct type.
	(FRV_CACHE_RETURN_BUFFER): New struct type.
	(FRV_CACHE_FLUSH_STATUS): New struct type.
	(FRV_CACHE_STATUS): New struct type.
	(FRV_CACHE_STAGE): New struct type.
	(FRV_CACHE_STAGES): New enumeration.
	(FRV_CACHE_WAR): New struct type.
	(FRV_CACHE_PIPELINE): New struct type.
	(FRV_CACHE_ARS): New struct type.
	(FRV_CACHE_STATISTICS): New struct type.
	(FRV_CACHE): Add pipeline, statistics, BARS and NARS.
	(CACHE_RETURN_DATA): 'return_buffer' is now within 'status'.
	(CACHE_RETURN_DATA_ADDRESS): New macro.
	(frv_cache_read): Now takes pipe index as second argument.
	(frv_cache_enabled): New function.
	(frv_cache_request_load): New function.
	(frv_cache_request_store): New function.
	(frv_cache_request_invalidate): New function.
	(frv_cache_request_preload): New function.
	(frv_cache_request_unlock): New function.
	(frv_cache_run): New function.
	(frv_cache_read_passive_SI): New function.
	(frv_cache_data_in_buffer): New function.
	(frv_cache_data_flushed): New function.
	* cache.c (frv_cache_init): Initialize pipelines and xARS registers.
	(frv_cache_enabled): New function.
	(non_cache_access): New function.
	(write_data_to_memory): Count write accesses for each mode. Write to
	memory using sim_core_write_unaligned_1;
	(read_data_from_memory): New function.
	(fill_line_from_memory): Use read_data_from_memory.
	(copy_line_to_return_buffer): New function.
	(copy_memory_to_return_buffer): New function.
	(set_return_buffer_reqno): New function.
	(frv_cache_read): Now takes pipe index as second argument. Check for
	non-cache access.
	(frv_cache_preload): Check for non-cache access.
	(frv_cache_unlock): Check for non-cache access.
	(invalidate_return_buffer): New function.
	(frv_cache_invalidate): Check for non-cache access.
	(convert_slot_to_index): New function.
	(FREE_CHAIN_SIZE): New macro.
	(frv_cache_request_free_chain): New static variable.
	(frv_store_request_free_chain): New static variable.
	(allocate_new_cache_requests): New function.
	(new_cache_request): New function.
	(free_cache_request): New function.
	(new_store_request): New function.
	(pipeline_remove_request): New function.
	(pipeline_add_request): New function.
	(pipeline_requeue_request): New function.
	(next_priority): New function.
	(add_WAR_request): New function.
	(pipeline_next_request): New function.
	(pipeline_stage_request): New function.
	(advance_pipelines): New function.
	(frv_cache_request_load): New function.
	(frv_cache_request_store): New function.
	(frv_cache_request_invalidate): New function.
	(frv_cache_request_preload): New function.
	(frv_cache_request_unlock): New function.
	(address_interference): New function.
	(wait_for_WAR): New function.
	(wait_in_WAR): New function.
	(handle_req_load): New function.
	(handle_req_preload): New function.
	(handle_req_store): New function.
	(handle_req_invalidate): New function.
	(handle_req_unlock): New function.
	(handle_req_WAR): New function.
	(arbitrate_requests): New function.
	(move_ARS_to_WAR): New function.
	(decrease_latencies): New function.
	(frv_cache_run): New function.
	(frv_cache_read_passive_SI): New function.
	(frv_cache_data_in_buffer): New function.
	(frv_cache_data_flushed): New function.
	* arch.h,decode.c,decode.h,model.c,sem.c: Rebuild.

Wed May 24 14:40:34 2000  Andrew Cagney  <[e-mail]>

	* configure: Regenerated to track ../common/aclocal.m4 changes.

2000-05-19  Dave Brolley  <[e-mail]>

	* traps.c (frv_rett): Check for exceptions in the order specified in the
	architecture spec. Allow privileged_instruction interrrupt to be handled
	normally.
	* registers.c (frv_register_control_init): Handle bfd_mach_frvtomcat.
	* frv.c (frvbf_signed_integer_divide): Use updated dtt to decide whether
	to clear the NE flag.
	(frvbf_model_tomcat_u_exec): New function.
	* frv-sim.h (frvbf_division_exception): Now returns updated dtt.
	* Makefile.in (stamp-cpu): Add 'tomcat' to 'mach' value.
	* arch.c,arch.h,cpu.h,cpuall.h,model.h,decode.c,sem.c: Regenerate.

2000-05-18  Dave Brolley  <[e-mail]>

	* sim-if.c (elf-bfd.h): #include it.
	(sim_open): Set machine amd architecture based on elf flags.

2000-04-04  Dave Brolley  <[e-mail]>

	* frv-sim.h (frv_h_psr_esr_set_handler): Removed.
	Delete '#if 0' blocks.
	* frv.c: Delete '#if 0' blocks.
	(spr_psr_set_handler): Remove special handling for circular referencing of handlers for
	PSR.S and PSR.ESR.
	(frv_h_psr_esr_set_handler): Removed.
	* interrupts.c: Delete '#if 0' blocks.
	* memory.c: Delete '#if 0' blocks.
	* cpu.c,cpu.h: Regenerate.

2000-04-03  Dave Brolley  <[e-mail]>

	* traps.c (frvbf_check_recovering_store): Invalidate data cache line
	containing the target address.
	(clear_nesr_neear): No longer takes hi_available and lo_available.
	Remove bogus check for available GR registers.
	(frvbf_clear_ne_flags): Update call to clear_nesr_neear.
	(frvbf_commit): Update call to clear_nesr_neear.
	* interrupts.c (next_available_esr): Removed.
	(next_available_edr): Removed.
	(next_available_fq): Removed.
	* frv.c (frvbf_fetch_register): Remove "FIXME" comment.
	(frvbf_store_register): Remove "FIXME" comment.
	* frv-sim.h (UART_INCHAR_ADDR): Removed.
	(UART_OUTCHAR_ADDR):  Removed.
	(UART_STATUS_ADDR):  Removed.
	(UART_INPUT_READY):  Removed.
	(UART_OUTPUT_READY):  Removed.
	(FRV_DEVICE_ADDR):  Removed.
	(FRV_DEVICE_LEN):  Removed.
	(SET_NESR): Call frvbf_force_update.
	(SET_NEEAR): Call frvbf_force_update.
	(SET_NE_FLAGS): Call frvbf_force_update.

2000-03-30  Dave Brolley  <[e-mail]>

	* configure: Regenerated.

2000-03-30  Dave Brolley  <[e-mail]>

	* registers.c (fr500_spr): Define ESR14-15 and EPCSR14-15 for fr500.
	* memory.c (frvbf_write_mem_*): Save slot containing the insn