changelog

这个是LINUX下的GDB调度工具的源码

	performing the write.
	(frvbf_mem_set_*): Overwrite the slot information of the interrupt
	queue element with the information in the interrupt state.
	* interrupts.c (frv_queue_interrupt): Call frv_set_interrupt_queue_slot.
	(frv_queue_fp_exception_interrupt): Initialize 'new_element'.
	(frv_set_interrupt_queue_slot): New function.
	(esr_for_data_access_exception): New function.
	(set_edr_register): edr_index is now passed in.
	(fq_for_exception): New function.
	(set_fp_exception_registers): Call fq_for_exception. Interrupt queue
	element now passed in.
	(set_exception_status_registers): Obtain slot from interrupt queue
	element. Call esr_for_data_access_exception. Use ESR14
	for data_store_error. Use ESR15 for data_access_error. Use EDR0.
	(frv_save_data_written_for_interrupts): Save slot containing the insn
	performing the write.
	* frv-sim.h (struct frv_fp_exception_info): Use frv_fsr_traps and
	frv_fsr_ftt.
	(struct frv_interrupt_state): Add 'slot' field.
	(frv_set_interrupt_queue_slot): New function.
	(frv_set_write_queue_slot): New function.

2000-03-24  Dave Brolley  <[e-mail]>

	* mloop.in (_parallel_write_init): Initialize
	frv_interrupt_state.imprecise_interrupt.
	(_parallel_write_queued): After an imprecise interrupt, only perform
	forced writes and floating point writes (for certain exceptions).
	* interrupts.c (handle_interrupt): Set
	frv_interrupt_state.imprecise_interrupt for writeback after an imprecise
	interrupt.
	(frv_process_interrupts): No need to clear f_ne_flags.
	* frv.c (frvbf_signed_integer_divide): Queue writes to GR registers and
	force them to happen even if there is an overflow exception.
	(frvbf_force_update): New function.
	* frv-sim.h (frvbf_force_update): New function.
	(struct frv_interrupt_state): Add imprecise_interrupt.
	(FRV_WRITE_QUEUE_FORCE_WRITE): New macro.
	* sem.c: Regenerate.

2000-03-23  Dave Brolley  <[e-mail]>

	* traps.c (frv_rett): Queue FRV_ILLEGAL_INSTRUCTION directly.
	* registers.c (frv_spr): MCIRL -> MCILR.
	* interrupts.c (frv_queue_non_implemented_instruction_interrupt):
	New function.
	(frv_detect_insn_access_interrupts):
	Call frv_queue_non_implemented_instruction_interrupt.
	(frv_process_interrupts): Clear accumulated NE flags.
	* frv.c (frvbf_media_cop): New function.
	(frvbf_set_ne_index): Now takes (SIM_CPU *) as first argument.  Clear
	the NE flag of the given target register.
	(frvbf_model_fr500_u_float_arith): Account for FRdouble registers.
	(frvbf_model_fr500_u_float_dual_arith): Account for FRdouble registers.
	(frvbf_model_fr500_u_float_dual_sqrt): New function.
	(frvbf_model_fr500_u_float_convert): Account for FRdouble registers.
	(frvbf_model_fr500_u_float_dual_convert): New function.
	* frv-sim.h (frvbf_media_cop): New function.
	(GET_FQ): Use H_SPR_FQST0.
	(SET_FQ): Use H_SPR_FQST0.
	(SET_FQ_OPC): Use J_SPR_FQOP0.
	(GET_MSR_EMCI): New macro.
	(frv_queue_non_implemented_instruction_interrupt): New function.
	* arch.h,cpu.h,decode.c,decode.h,model.c,sem.c: Regenerate.

2000-03-08  Dave Brolley  <[e-mail]>

	* traps.c (frv_rett): Align new_pc.
	* memory.c (frvbf_read_mem_HI): Align address.
	(frvbf_read_mem_UHI): Align address.
	(frvbf_read_mem_SI): Align address.
	(frvbf_read_mem_DI): Align address.
	(frvbf_read_mem_DF): Align address.
	(frvbf_read_imem_USI): Align address.
	(frvbf_mem_set_HI): Align address.
	(frvbf_mem_set_SI): Align address.
	(frvbf_mem_set_DI): Align address.
	(frvbf_mem_set_DF): Align address.
	(frvbf_mem_set_XI): Align address.
	* registers.c (frv_spr): Initialize FSR0.NS to 1.
	(fr500_spr): Initialize FSR0.NS to 1.
	* interrupts.c (frv_queue_mem_address_not_aligned_interrupt): Check
	whether the exception is masked.
	* frv.c (frvbf_load_quad_GR): Align address.
	(frvbf_store_quad_GR): Align address.
	(frvbf_load_quad_FRint): Align address.
	(frvbf_store_quad_FRint): Align address.
	(frvbf_load_quad_CPR): Align address.
	(frvbf_store_quad_CPR): Align address.
	* frv-sim.h (GET_ISR_EMAM): New macro.

2000-03-08  Dave Brolley  <[e-mail]>

	* traps.c (frvbf_division_exception): Check for masked overflow and
	set NE flags, if necessary.
	(frvbf_check_recovering_store): Queue writes to the hardware.
	(check_registers_available): Removed.
	(which_registers_available): Call frv_{fr,gr}_registers_available.
	(frvbf_clear_ne_flags): Call check_register_access.
	(frvbf_commit): Call check_register_access.
	* registers.h (frv_fr_registers_available): New function.
	(frv_gr_registers_available): New function.
	(frv_check_register_access): New function.
	(frv_check_gr_access): New function.
	(frv_check_fr_access): New function.
	* registers.c (frv_spr): Correct initial value of ISR.
	(fr500_spr): Correct initial value of ISR.
	(frv_fr_registers_available): New function.
	(frv_gr_registers_available): New function.
	(frv_check_register_access): New function.
	(frv_check_gr_access): New function.
	(frv_check_fr_access): New function.
	* interrupts.c (frv_queue_division_exception_interrupt): New function.
	(set_isr_exception_fields): New function.
	(set_exception_status_registers): Set ISR fields for division exception.
	(frv_save_data_written_for_interrupts): Handle CGEN_FN_SF_WRITE.
	* frv.c (frvbf_h_gr_get_handler): New function.
	(frvbf_h_gr_set_handler): New function.
	(frvbf_h_fr_get_handler): New function.
	(frvbf_h_fr_set_handler): New function.
	(frvbf_h_spr_get_handler): Remove special handling for ISR.
	(frvbf_h_spr_set_handler): Remove special handling for ISR.
	(spr_isr_get_handler): Removed.
	(spr_isr_set_handler): Removed.
	(frvbf_signed_integer_divide): New funciton.
	(frvbf_unsigned_integer_divide): New funciton.
	* frv-sim.h (frvbf_h_gr_get_handler): New function.
	(frvbf_h_gr_set_handler): New function.
	(frvbf_h_fr_get_handler): New function.
	(frvbf_h_fr_set_handler): New function.
	(frvbf_signed_integer_divide): New funciton.
	(frvbf_unsigned_integer_divide): New funciton.
	(frv_dtt): New enumeration.
	(struct frv_interrupt_queue_element): Add dtt member.
	(GET_ISR): New macro.
	(SET_ISR): New macro.
	(GET_ISR_EDEM): New macro.
	(SET_ISR_DTT): New macro.
	(SET_ISR_AEXC): New macro.
	(frvbf_division_exception): Add 2 'int' arguments.
	(frvbf_check_non_excepting_divide): Removed.
	* cpu.c,cpu.h,decode.c,decode.h,model.c,sem.c: Regenerate.

2000-02-29  Dave Brolley  <[e-mail]>

	* traps.c (frv_itrap): Use GET_H_GR, SET_H_GR, GET_H_FR.
	(frv_rett): Use hardware access macros. Write PSR as a whole.
	(next_available_nesr): Check that NECR is valid.
	(next_valid_nesr): Check that NECR is valid.
	(frvbf_check_non_excepting_load): User new NECR access macros. Don't
	call hardware access functions. Use cover macros.
	(check_registers_available): New function.
	(clear_nesr_near): Check register availability.
	(clear_ne_flags): Check register availability.
	(frvbf_clear_ne_flags): Check register availability.
	(frvbf_commit): Check register availability.
	(which_registers_available): New function.
	* sim-main.h (registers.h): #include it.
	(register_control): New cpu field.
	(CPU_REGISTER_CONTROL): New macro.
	* reset.c (frv_initialize): Set HSR0 fields for cache here.
	(frv_power_on_reset): Initialize SPR registers and RSTR.
	(frv_hardware_reset): Initialize SPR registers and RSTR.
	(frv_software_reset): Reset SPR registers and RSTR.
	* options.c (frv_option_handler): Don't set HSR0 fields for cache here.
	Call frv_cache_init.
	* mloop.in (main loop): Check for insn access interrupts before
	executing the insn.
	* interrupts.c (frv_queue_external_interrupt): Use GET_H_PSR_ET.
	(frv_detect_insn_access_interrupts): Don't call hardware access
	functions directly. Use cover macros.
	(check_reset): Don't reset RSTR here.
	(next_available_esr): ESFR -> ESFR_FLAG.
	(next_available_edr): ESFR -> ESFR_FLAG.
	(clear_exception_status_registers): Use GET_ESFR and SET_ESFR.
	ESFR -> ESFR_FLAG.
	(frv_break_interrupt): Don't call hardware access functions directly.
	Use cover macros.
	(frv_program_or_software_interrupt): Ditto.
	(frv_external_interrupt): Ditto.
	* frv.c (frvbf_fetch_register): Don't call 'get' functions directly.
	(frvbf_store_register): Don't call 'set' functions directly.
	(frvbf_h_gr_double_get_handler): Use GET_H_GR.
	(frvbf_h_gr_double_set_handler): Use SET_H_GR.
	(frvbf_h_fr_double_get_handler): Use GET_H_FR.
	(frvbf_h_fr_double_set_handler): Use SET_H_FR.
	(frvbf_h_fr_int_get_handler): Use GET_H_FR.
	(frvbf_h_fr_int_set_handler): Use SET_H_FR.
	(frvbf_h_cpr_double_get_handler): Use GET_H_CPR.
	(frvbf_h_cpr_double_set_handler): Use SET_H_CPR.
	(frvbf_h_gr_quad_set_handler): Use SET_H_GR.
	(frvbf_h_fr_quad_set_handler): Use SET_H_FR.
	(frvbf_h_spr_get_handler): Check SPR access. Call renamed functions.
	Support shadow registers.
	(frvbf_h_spr_set_handler): Check SPR access. Call renamed functions.
	Support shadow registers.
	(spr_psr_get_handler): Renamed from frvbf_h_psr_get_handler.
	(spr_psr_set_handler): Renamed from frvbf_h_psr_set_handler.
	(spr_tbr_get_handler): Renamed from frvbf_h_tbr_get_handler.
	(spr_tbr_set_handler): Renamed from frvbf_h_tbr_set_handler.
	(spr_bpsr_get_handler): Renamed from frvbf_h_bpsr_get_handler.
	(spr_bpsr_set_handler): Renamed from frvbf_h_bpsr_set_handler.
	(spr_ccr_get_handler): Renamed from frvbf_h_ccr_get_handler.
	(spr_ccr_set_handler): Renamed from frvbf_h_ccr_set_handler.
	(spr_lr_get_handler): Renamed from frvbf_h_lr_get_handler.
	(spr_lr_set_handler): Renamed from frvbf_h_lr_set_handler.
	(spr_cccr_get_handler): Renamed from frvbf_h_cccr_get_handler.
	(spr_cccr_set_handler): Renamed from frvbf_h_cccr_set_handler.
	(spr_isr_get_handler): Renamed from frvbf_h_isr_get_handler.
	(spr_isr_set_handler): Renamed from frvbf_h_isr_set_handler.
	(spr_sr_get_handler): Renamed from frvbf_h_sr_get_handler.
	(spr_sr_set_handler): Renamed from frvbf_h_sr_set_handler.
	(frvbf_h_psr_esr_set_handler): Update to conform to FRV architecture
	version 1.3a.
	(spr_ccr_get_handler): Don't reference the hardware directly.
	(spr_ccr_set_handler): Don't reference the hardware directly.
	(spr_cccr_get_handler): Don't reference the hardware directly.
	(spr_cccr_set_handler): Don't reference the hardware directly.
	(spr_sr_get_handler): New function.
	(spr_sr_set_handler): New function.
	(frvbf_switch_supervisor_user_context): Temporarily switch to
	supervisor mode.
	(frvbf_store_quad_GR): Don't call handler directly.
	(frvbf_store_quad_FRint): Don't call handler directly.
	(frvbf_store_quad_CPR): Don't call handler directly.
	(frvbf_clear_all_accumulators): Removed.
	(frvbf_clear_accumulators): New function.
	(frvbf_model_fr500_u_media): Expand busy_adjustment to 8 members.
	Account for in_ACCGi and out_ACCGk.
	* frv-sim.h (RSTR_HARDWARE_RESET): New macro.
	(RSTR_SOFTWARE_RESET): New macro.
	(spr_psr_get_handler): Renamed from frvbf_h_psr_get_handler.
	(spr_psr_set_handler): Renamed from frvbf_h_psr_set_handler.
	(spr_tbr_get_handler): Renamed from frvbf_h_tbr_get_handler.
	(spr_tbr_set_handler): Renamed from frvbf_h_tbr_set_handler.
	(spr_bpsr_get_handler): Renamed from frvbf_h_bpsr_get_handler.
	(spr_bpsr_set_handler): Renamed from frvbf_h_bpsr_set_handler.
	(spr_ccr_get_handler): Renamed from frvbf_h_ccr_get_handler.
	(spr_ccr_set_handler): Renamed from frvbf_h_ccr_set_handler.
	(spr_lr_get_handler): Renamed from frvbf_h_lr_get_handler.
	(spr_lr_set_handler): Renamed from frvbf_h_lr_set_handler.
	(spr_cccr_get_handler): Renamed from frvbf_h_cccr_get_handler.
	(spr_cccr_set_handler): Renamed from frvbf_h_cccr_set_handler.
	(spr_isr_get_handler): Renamed from frvbf_h_isr_get_handler.
	(spr_isr_set_handler): Renamed from frvbf_h_isr_set_handler.
	(spr_sr_get_handler): Renamed from frvbf_h_sr_get_handler.
	(spr_sr_set_handler): Renamed from frvbf_h_sr_set_handler.
	(frvbf_clear_all_accumulators): Removed.
	(frvbf_clear_accumulators): New function.
	(GET_HSR0): Use GET_H_SPR.
	(SET_HSR0): Use SET_H_SPR.
	(CLEAR_HSR0_ICE): New macro.
	(CLEAR_HSR0_DCE): New macro.
	(GET_IHSR8): Use GET_H_SPR.
	(GET_PSR): New macro.
	(SET_PSR_ET): New macro.
	(GET_PSR_PS): New macro.
	(SET_PSR_S): New macro.
	(GET_ESFR): Changed to reference entire register.
	(SET_ESFR): Changed to reference entire register.
	(GET_ESFR_FLAG): New macro.
	(SET_ESFR_FLAG): New macro.
	(NECR_ELOS): Removed.
	(NECR_NEN): Removed.
	(NECR_VALID): Removed.
	(GET_NECR): New macro.
	(GET_NECR_ELOS): New macro.
	(GET_NECR_NEN): New macro.
	(GET_NECR_VALID): New macro.
	(NESR_RANGE): Removed.
	(GET_NESR): Use GET_H_SPR.
	(GET_NE_FLAGS): Use GET_H_SPR.
	* cache.h (CACHE_INITIALIZED): New macro.
	* Makefile.in (SIM_OBJS): Add registers.o.
	(SIM_EXTRA_DEPS): Add registers.h.
	(registers.o): New target.
	* cpu.c,cpu.h,decode.c,decode.h,model.c,sem.c: Regenerate.

2000-02-17  Dave Brolley  <[e-mail]>

	* interrupts.c (frv_interrupt_table): Update priority order and handler
	offsets to conform to the architecture version 1.3a.
	* frv-sim.h (frv_interrupt_kind): Update priority order to conform
	to the architecture version 1.3a.

2000-02-17  Dave Brolley  <[e-mail]>

	* interrupts.c (frv_interrupt_table): Update priority order and handler
	offsets to conform to the latest specifications.
	(frv_queue_interrupt): Correct comment. Identical interrupts can be
	queued. New variable 'iclass' used to test for external interrupts.
	* frv-sim.h (frv_interrupt_kind): Update priority order to conform
	to the latest specifications.

2000-01-20  Dave Brolley  <[e-mail]>

	* sim-if.c (sim_open): Move frv-specific initialization to
	frv_initialize in reset.c.
	* interrupts.c (check_reset): Use RSTR_ADDRESS. Check and reset RSTR
	status bits for hardware vs software reset.
	* reset.c: New file.
	* frv-sim.h (frv_initialize): New function.
	(frv_power_on_reset): New function.
	(frv_hardware_reset): New function.
	(frv_software_reset): New function.
	(RSTR_ADDRESS): New macro.
	(RSTR_INITIAL_VALUE): New macro.
	(GET_RSTR_HR): New macro.
	(GET_RSTR_SR): New macro.
	(SET_RSTR_H): New macro.
	(SET_RSTR_S): New macro.
	(CLEAR_RSTR_P): New macro.
	(CLEAR_RSTR_H): New macro.
	(CLEAR_RSTR_S): New macro.
	(CLEAR_RSTR_HR): New macro.
	(CLEAR_RSTR_SR): New macro.

2000-01-03  Dave Brolley  <[e-mail]>