mirror of
https://github.com/ksherlock/mpw.git
synced 2024-12-22 15:29:45 +00:00
392 lines
11 KiB
C
392 lines
11 KiB
C
/* @(#) $Id: CpuIntegration.c,v 1.10 2013-01-08 19:17:33 peschau Exp $ */
|
|
/*=========================================================================*/
|
|
/* Fellow */
|
|
/* Initialization of 68000 core */
|
|
/* Integrates the 68k emulation with custom chips */
|
|
/* */
|
|
/* Author: Petter Schau */
|
|
/* */
|
|
/* Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc. */
|
|
/* */
|
|
/* 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, 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. */
|
|
/*=========================================================================*/
|
|
|
|
#include "defs.h"
|
|
#include "fellow.h"
|
|
#include "fmem.h"
|
|
#include "CpuModule.h"
|
|
#include "CpuIntegration.h"
|
|
#include "CpuModule_Internal.h"
|
|
#include "bus.h"
|
|
#include "fileops.h"
|
|
#include "interrupt.h"
|
|
|
|
jmp_buf cpu_integration_exception_buffer;
|
|
ULO cpu_integration_chip_interrupt_number;
|
|
|
|
/* Cycles spent by chips (Blitter) as a result of an instruction */
|
|
static ULO cpu_integration_chip_cycles;
|
|
static ULO cpu_integration_chip_slowdown;
|
|
|
|
/*===========================================================================*/
|
|
/* CPU properties */
|
|
/*===========================================================================*/
|
|
|
|
ULO cpu_integration_speed; // The speed as expressed in the fellow configuration settings
|
|
ULO cpu_integration_speed_multiplier; // The cycle multiplier used to adjust the cpu-speed, calculated from cpu_integration_speed
|
|
cpu_integration_models cpu_integration_model; // The cpu model as expressed in the fellow configuration settings
|
|
|
|
/*===========================================================================*/
|
|
/* CPU properties */
|
|
/*===========================================================================*/
|
|
|
|
void cpuIntegrationSetSpeed(ULO speed)
|
|
{
|
|
cpu_integration_speed = speed;
|
|
}
|
|
|
|
ULO cpuIntegrationGetSpeed(void)
|
|
{
|
|
return cpu_integration_speed;
|
|
}
|
|
|
|
static void cpuIntegrationSetSpeedMultiplier(ULO multiplier)
|
|
{
|
|
cpu_integration_speed_multiplier = multiplier;
|
|
}
|
|
|
|
static ULO cpuIntegrationGetSpeedMultiplier(void)
|
|
{
|
|
return cpu_integration_speed_multiplier;
|
|
}
|
|
|
|
void cpuIntegrationCalculateMultiplier(void)
|
|
{
|
|
ULO multiplier = 12;
|
|
|
|
switch (cpuGetModelMajor())
|
|
{
|
|
case 0:
|
|
multiplier = 12;
|
|
break;
|
|
case 1:
|
|
multiplier = 12;
|
|
break;
|
|
case 2:
|
|
multiplier = 11;
|
|
break;
|
|
case 3:
|
|
multiplier = 11;
|
|
break;
|
|
}
|
|
|
|
if (cpuIntegrationGetSpeed() >= 8) cpuIntegrationSetSpeedMultiplier(multiplier);
|
|
else if (cpuIntegrationGetSpeed() >= 4) cpuIntegrationSetSpeedMultiplier(multiplier - 1);
|
|
else if (cpuIntegrationGetSpeed() >= 2) cpuIntegrationSetSpeedMultiplier(multiplier - 2);
|
|
else if (cpuIntegrationGetSpeed() >= 1) cpuIntegrationSetSpeedMultiplier(multiplier - 3);
|
|
else cpuIntegrationSetSpeedMultiplier(multiplier - 4);
|
|
}
|
|
|
|
BOOLE cpuIntegrationSetModel(cpu_integration_models model)
|
|
{
|
|
BOOLE needreset = (cpu_integration_model != model);
|
|
cpu_integration_model = model;
|
|
|
|
switch (cpu_integration_model)
|
|
{
|
|
case M68000: cpuSetModel(0, 0); break;
|
|
case M68010: cpuSetModel(1, 0); break;
|
|
case M68020: cpuSetModel(2, 0); break;
|
|
case M68030: cpuSetModel(3, 0); break;
|
|
case M68EC20: cpuSetModel(2, 1); break;
|
|
case M68EC30: cpuSetModel(3, 1); break;
|
|
}
|
|
return needreset;
|
|
}
|
|
|
|
cpu_integration_models cpuIntegrationGetModel(void)
|
|
{
|
|
return cpu_integration_model;
|
|
}
|
|
|
|
void cpuIntegrationSetChipCycles(ULO chip_cycles)
|
|
{
|
|
cpu_integration_chip_cycles = chip_cycles;
|
|
}
|
|
|
|
ULO cpuIntegrationGetChipCycles(void)
|
|
{
|
|
return cpu_integration_chip_cycles;
|
|
}
|
|
|
|
void cpuIntegrationSetChipSlowdown(ULO chip_slowdown)
|
|
{
|
|
cpu_integration_chip_slowdown = chip_slowdown;
|
|
}
|
|
|
|
ULO cpuIntegrationGetChipSlowdown(void)
|
|
{
|
|
return cpu_integration_chip_slowdown;
|
|
}
|
|
|
|
void cpuIntegrationSetChipInterruptNumber(ULO chip_interrupt_number)
|
|
{
|
|
cpu_integration_chip_interrupt_number = chip_interrupt_number;
|
|
}
|
|
|
|
ULO cpuIntegrationGetChipInterruptNumber(void)
|
|
{
|
|
return cpu_integration_chip_interrupt_number;
|
|
}
|
|
|
|
// A wrapper for cpuSetIrqLevel that restarts the
|
|
// scheduling of cpu events if the cpu was stoppped
|
|
void cpuIntegrationSetIrqLevel(ULO new_interrupt_level, ULO chip_interrupt_number)
|
|
{
|
|
if (cpuSetIrqLevel(new_interrupt_level))
|
|
{
|
|
cpuEvent.cycle = busGetCycle();
|
|
}
|
|
cpuIntegrationSetChipInterruptNumber(chip_interrupt_number);
|
|
}
|
|
|
|
/*=========================================*/
|
|
/* Exception mid-instruction exit function */
|
|
/*=========================================*/
|
|
|
|
void cpuIntegrationMidInstructionExceptionFunc(void)
|
|
{
|
|
longjmp(cpu_integration_exception_buffer, -1);
|
|
}
|
|
|
|
/*===================================================*/
|
|
/* Handles reset exception event from the cpu-module */
|
|
/*===================================================*/
|
|
|
|
void cpuIntegrationResetExceptionFunc(void)
|
|
{
|
|
fellowSoftReset();
|
|
}
|
|
|
|
/*=========*/
|
|
/* Logging */
|
|
/*=========*/
|
|
|
|
#ifdef CPU_INSTRUCTION_LOGGING
|
|
|
|
FILE *CPUINSTRUCTIONLOG;
|
|
int cpu_disable_instruction_log = TRUE;
|
|
|
|
void cpuInstructionLogOpen(void)
|
|
{
|
|
if (CPUINSTRUCTIONLOG == NULL)
|
|
{
|
|
char filename[MAX_PATH];
|
|
fileopsGetGenericFileName(filename, "WinFellow", "cpuinstructions.log");
|
|
CPUINSTRUCTIONLOG = fopen(filename, "w");
|
|
}
|
|
}
|
|
|
|
void cpuIntegrationPrintBusCycle(void)
|
|
{
|
|
fprintf(CPUINSTRUCTIONLOG, "%I64u:%.5u ", bus.frame_no, bus.cycle);
|
|
}
|
|
|
|
void cpuIntegrationInstructionLogging(void)
|
|
{
|
|
char saddress[256], sdata[256], sinstruction[256], soperands[256];
|
|
|
|
if (cpu_disable_instruction_log) return;
|
|
cpuInstructionLogOpen();
|
|
/*
|
|
fprintf(CPUINSTRUCTIONLOG,
|
|
"D0:%.8X D1:%.8X D2:%.8X D3:%.8X D4:%.8X D5:%.8X D6:%.8X D7:%.8X\n",
|
|
cpuGetDReg(0),
|
|
cpuGetDReg(1),
|
|
cpuGetDReg(2),
|
|
cpuGetDReg(3),
|
|
cpuGetDReg(4),
|
|
cpuGetDReg(5),
|
|
cpuGetDReg(6),
|
|
cpuGetDReg(7));
|
|
|
|
fprintf(CPUINSTRUCTIONLOG,
|
|
"A0:%.8X A1:%.8X A2:%.8X A3:%.8X A4:%.8X A5:%.8X A6:%.8X A7:%.8X\n",
|
|
cpuGetAReg(0),
|
|
cpuGetAReg(1),
|
|
cpuGetAReg(2),
|
|
cpuGetAReg(3),
|
|
cpuGetAReg(4),
|
|
cpuGetAReg(5),
|
|
cpuGetAReg(6),
|
|
cpuGetAReg(7));
|
|
*/
|
|
saddress[0] = '\0';
|
|
sdata[0] = '\0';
|
|
sinstruction[0] = '\0';
|
|
soperands[0] = '\0';
|
|
cpuDisOpcode(cpuGetPC(), saddress, sdata, sinstruction, soperands);
|
|
fprintf(CPUINSTRUCTIONLOG, "SSP:%.6X USP:%.6X SP:%.4X %s %s\t%s\t%s\n", cpuGetSspDirect(), cpuGetUspDirect(), cpuGetSR(), saddress, sdata, sinstruction, soperands);
|
|
}
|
|
|
|
void cpuIntegrationExceptionLogging(STR *description, ULO original_pc, UWO opcode)
|
|
{
|
|
if (cpu_disable_instruction_log) return;
|
|
cpuInstructionLogOpen();
|
|
|
|
cpuIntegrationPrintBusCycle();
|
|
fprintf(CPUINSTRUCTIONLOG, "%s for opcode %.4X at PC %.8X from PC %.8X\n", description, opcode, original_pc, cpuGetPC());
|
|
}
|
|
|
|
void cpuIntegrationInterruptLogging(ULO level, ULO vector_address)
|
|
{
|
|
if (cpu_disable_instruction_log) return;
|
|
cpuInstructionLogOpen();
|
|
|
|
cpuIntegrationPrintBusCycle();
|
|
fprintf(CPUINSTRUCTIONLOG, "Irq %u to %.6X (%s)\n", level, vector_address, interruptGetInterruptName(cpuIntegrationGetChipInterruptNumber()));
|
|
}
|
|
|
|
#endif
|
|
|
|
void cpuIntegrationExecuteInstructionEventHandler68000Fast(void)
|
|
{
|
|
ULO cycles;
|
|
cycles = cpuExecuteInstruction();
|
|
|
|
if (cpuGetStop())
|
|
{
|
|
cpuEvent.cycle = BUS_CYCLE_DISABLE;
|
|
}
|
|
else
|
|
{
|
|
cpuEvent.cycle += ((cycles*cpuIntegrationGetChipSlowdown())>>1) + cpuIntegrationGetChipCycles();
|
|
}
|
|
cpuIntegrationSetChipCycles(0);
|
|
}
|
|
|
|
void cpuIntegrationExecuteInstructionEventHandler68000General(void)
|
|
{
|
|
ULO cycles = 0;
|
|
ULO time_used = 0;
|
|
|
|
do
|
|
{
|
|
cycles = cpuExecuteInstruction();
|
|
cycles = cycles*cpuIntegrationGetChipSlowdown(); // Compensate for blitter time
|
|
time_used += (cpuIntegrationGetChipCycles()<<12) + (cycles<<cpuIntegrationGetSpeedMultiplier());
|
|
}
|
|
while (time_used < 8192 && !cpuGetStop());
|
|
|
|
if (cpuGetStop())
|
|
{
|
|
cpuEvent.cycle = BUS_CYCLE_DISABLE;
|
|
}
|
|
else
|
|
{
|
|
cpuEvent.cycle += (time_used>>12);
|
|
}
|
|
cpuIntegrationSetChipCycles(0);
|
|
}
|
|
|
|
void cpuIntegrationExecuteInstructionEventHandler68020(void)
|
|
{
|
|
ULO time_used = 0;
|
|
do
|
|
{
|
|
cpuExecuteInstruction();
|
|
time_used += (cpuIntegrationGetChipCycles()<<12) + (4<<cpuIntegrationGetSpeedMultiplier());
|
|
}
|
|
while (time_used < 8192 && !cpuGetStop());
|
|
|
|
if (cpuGetStop())
|
|
{
|
|
cpuEvent.cycle = BUS_CYCLE_DISABLE;
|
|
}
|
|
else
|
|
{
|
|
cpuEvent.cycle += (time_used>>12);
|
|
}
|
|
cpuIntegrationSetChipCycles(0);
|
|
}
|
|
|
|
void cpuIntegrationSetDefaultConfig(void)
|
|
{
|
|
cpuIntegrationSetModel(M68000);
|
|
cpuIntegrationSetChipCycles(0);
|
|
cpuIntegrationSetChipSlowdown(1);
|
|
cpuIntegrationSetSpeed(4);
|
|
|
|
cpuSetCheckPendingInterruptsFunc(interruptRaisePending);
|
|
cpuSetMidInstructionExceptionFunc(cpuIntegrationMidInstructionExceptionFunc);
|
|
cpuSetResetExceptionFunc(cpuIntegrationResetExceptionFunc);
|
|
|
|
#ifdef CPU_INSTRUCTION_LOGGING
|
|
cpuSetInstructionLoggingFunc(cpuIntegrationInstructionLogging);
|
|
cpuSetExceptionLoggingFunc(cpuIntegrationExceptionLogging);
|
|
cpuSetInterruptLoggingFunc(cpuIntegrationInterruptLogging);
|
|
#endif
|
|
}
|
|
|
|
/*=========================*/
|
|
/* Fellow lifecycle events */
|
|
/*=========================*/
|
|
|
|
void cpuIntegrationSaveState(FILE *F)
|
|
{
|
|
cpuSaveState(F);
|
|
|
|
fwrite(&cpu_integration_chip_slowdown, sizeof(cpu_integration_chip_slowdown), 1, F);
|
|
// Everything else is configuration options which will be set when the associated config-file is loaded.
|
|
}
|
|
|
|
void cpuIntegrationLoadState(FILE *F)
|
|
{
|
|
cpuLoadState(F);
|
|
|
|
fread(&cpu_integration_chip_slowdown, sizeof(cpu_integration_chip_slowdown), 1, F);
|
|
// Everything else is configuration options which will be set when the associated config-file is loaded.
|
|
}
|
|
|
|
void cpuIntegrationEmulationStart(void)
|
|
{
|
|
cpuIntegrationCalculateMultiplier();
|
|
}
|
|
|
|
void cpuIntegrationEmulationStop(void)
|
|
{
|
|
}
|
|
|
|
void cpuIntegrationHardReset(void)
|
|
{
|
|
cpuIntegrationSetChipCycles(0);
|
|
cpuIntegrationSetChipSlowdown(1);
|
|
cpuSetInitialPC(memoryInitialPC());
|
|
cpuSetInitialSP(memoryInitialSP());
|
|
cpuHardReset();
|
|
}
|
|
|
|
void cpuIntegrationStartup(void)
|
|
{
|
|
cpuStartup();
|
|
cpuIntegrationSetDefaultConfig();
|
|
cpuCreateMulTimeTables();
|
|
}
|
|
|
|
void cpuIntegrationShutdown(void)
|
|
{
|
|
cpuProfileWrite();
|
|
}
|