From c906108c21474dfb4ed285bcc0ac6fe02cd400cc Mon Sep 17 00:00:00 2001 From: Stan Shebs Date: Fri, 16 Apr 1999 01:35:26 +0000 Subject: Initial creation of sourceware repository --- sim/ppc/cpu.h | 254 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 sim/ppc/cpu.h (limited to 'sim/ppc/cpu.h') diff --git a/sim/ppc/cpu.h b/sim/ppc/cpu.h new file mode 100644 index 0000000..840f581 --- /dev/null +++ b/sim/ppc/cpu.h @@ -0,0 +1,254 @@ +/* This file is part of the program psim. + + Copyright (C) 1994-1997, Andrew Cagney + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + */ + + +#ifndef _CPU_H_ +#define _CPU_H_ + +#include "basics.h" +#include "registers.h" +#include "device.h" +#include "corefile.h" +#include "vm.h" +#include "events.h" +#include "interrupts.h" +#include "psim.h" +#include "idecode.h" +#include "itable.h" +#include "os_emul.h" +#include "mon.h" +#include "model.h" + +#ifndef CONST_ATTRIBUTE +#define CONST_ATTRIBUTE __attribute__((__const__)) +#endif + +/* typedef struct _cpu cpu; + + Declared in basics.h because it is used opaquely throughout the + code */ + + +/* Create a cpu object */ + +INLINE_CPU\ +(cpu *) cpu_create +(psim *system, + core *memory, + cpu_mon *monitor, + os_emul *cpu_emulation, + int cpu_nr); + +INLINE_CPU\ +(void) cpu_init +(cpu *processor); + +/* Find our way home */ + +INLINE_CPU\ +(psim *) cpu_system +(cpu *processor) CONST_ATTRIBUTE; + +INLINE_CPU\ +(cpu_mon *) cpu_monitor +(cpu *processor) CONST_ATTRIBUTE; + +INLINE_CPU\ +(os_emul *) cpu_os_emulation +(cpu *processor); + +INLINE_CPU\ +(int) cpu_nr +(cpu *processor) CONST_ATTRIBUTE; + + +/* manipulate the processors program counter and execution state. + + The program counter is not included in the register file. Instead + it is extracted and then later restored (set, reset, halt). This + is to give the user of the cpu (and the compiler) the chance to + minimize the need to load/store the cpu's PC value. (Especially in + the case of a single processor) */ + +INLINE_CPU\ +(void) cpu_set_program_counter +(cpu *processor, + unsigned_word new_program_counter); + +INLINE_CPU\ +(unsigned_word) cpu_get_program_counter +(cpu *processor); + +INLINE_CPU\ +(void) cpu_restart +(cpu *processor, + unsigned_word nia); + +INLINE_CPU\ +(void) cpu_halt +(cpu *processor, + unsigned_word nia, + stop_reason reason, + int signal); + +EXTERN_CPU\ +(void) cpu_error +(cpu *processor, + unsigned_word cia, + const char *fmt, + ...) __attribute__ ((format (printf, 3, 4))); + + +/* The processors local concept of time */ + +INLINE_CPU\ +(signed64) cpu_get_time_base +(cpu *processor); + +INLINE_CPU\ +(void) cpu_set_time_base +(cpu *processor, + signed64 time_base); + +INLINE_CPU\ +(signed32) cpu_get_decrementer +(cpu *processor); + +INLINE_CPU\ +(void) cpu_set_decrementer +(cpu *processor, + signed32 decrementer); + + +#if WITH_IDECODE_CACHE_SIZE +/* Return the cache entry that matches the given CIA. No guarentee + that the cache entry actually contains the instruction for that + address */ + +INLINE_CPU\ +(idecode_cache) *cpu_icache_entry +(cpu *processor, + unsigned_word cia); + +INLINE_CPU\ +(void) cpu_flush_icache +(cpu *processor); +#endif + + +/* reveal the processors VM: + + At first sight it may seem better to, instead of exposing the cpu's + inner vm maps, to have the cpu its self provide memory manipulation + functions. (eg cpu_instruction_fetch() cpu_data_read_4()) + + Unfortunatly in addition to these functions is the need (for the + debugger) to be able to read/write to memory in ways that violate + the vm protection (eg store breakpoint instruction in the + instruction map). */ + +INLINE_CPU\ +(vm_data_map *) cpu_data_map +(cpu *processor); + +INLINE_CPU\ +(vm_instruction_map *) cpu_instruction_map +(cpu *processor); + +INLINE_CPU\ +(void) cpu_page_tlb_invalidate_entry +(cpu *processor, + unsigned_word ea); + +INLINE_CPU\ +(void) cpu_page_tlb_invalidate_all +(cpu *processor); + + +/* reveal the processors interrupt state */ + +INLINE_CPU\ +(interrupts *) cpu_interrupts +(cpu *processor); + + +/* grant access to the reservation information */ + +typedef struct _memory_reservation { + int valid; + unsigned_word addr; + unsigned_word data; +} memory_reservation; + +INLINE_CPU\ +(memory_reservation *) cpu_reservation +(cpu *processor); + + +/* Registers: + + This model exploits the PowerPC's requirement for a synchronization + to occure after (or before) the update of any context controlling + register. All context sync points must call the sync function + below to when ever a synchronization point is reached */ + +INLINE_CPU\ +(registers *) cpu_registers +(cpu *processor) CONST_ATTRIBUTE; + +INLINE_CPU\ +(void) cpu_synchronize_context +(cpu *processor, + unsigned_word cia); + +#define IS_PROBLEM_STATE(PROCESSOR) \ +(CURRENT_ENVIRONMENT == OPERATING_ENVIRONMENT \ + ? (cpu_registers(PROCESSOR)->msr & msr_problem_state) \ + : 1) + +#define IS_64BIT_MODE(PROCESSOR) \ +(WITH_TARGET_WORD_BITSIZE == 64 \ + ? (CURRENT_ENVIRONMENT == OPERATING_ENVIRONMENT \ + ? (cpu_registers(PROCESSOR)->msr & msr_64bit_mode) \ + : 1) \ + : 0) + +#define IS_FP_AVAILABLE(PROCESSOR) \ +(CURRENT_ENVIRONMENT == OPERATING_ENVIRONMENT \ + ? (cpu_registers(PROCESSOR)->msr & msr_floating_point_available) \ + : 1) + + + +INLINE_CPU\ +(void) cpu_print_info +(cpu *processor, + int verbose); + +INLINE_CPU\ +(model_data *) cpu_model +(cpu *processor) CONST_ATTRIBUTE; + + +#if (CPU_INLINE & INCLUDE_MODULE) +# include "cpu.c" +#endif + +#endif -- cgit v1.1