2008-12-08 05:25:12 +00:00
|
|
|
/*====================================================================
|
|
|
|
|
|
|
|
filename: gdsp_interpreter.cpp
|
|
|
|
project: GCemu
|
|
|
|
created: 2004-6-18
|
|
|
|
mail: duddie@walla.com
|
|
|
|
|
|
|
|
Copyright (c) 2005 Duddie & Tratax
|
|
|
|
|
|
|
|
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.
|
|
|
|
|
|
|
|
====================================================================*/
|
|
|
|
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <stdlib.h>
|
|
|
|
|
|
|
|
#include "gdsp_interface.h"
|
|
|
|
#include "gdsp_opcodes_helper.h"
|
|
|
|
#include "Tools.h"
|
|
|
|
|
|
|
|
//-------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
SDSP g_dsp;
|
|
|
|
|
|
|
|
uint16 SDSP::r[32];
|
|
|
|
uint16 SDSP::pc = 0;
|
|
|
|
uint16 SDSP::err_pc = 0;
|
|
|
|
uint16* SDSP::iram = 0;
|
|
|
|
uint16* SDSP::dram = 0;
|
|
|
|
uint16* SDSP::irom = 0;
|
|
|
|
uint16* SDSP::drom = 0;
|
|
|
|
uint16* SDSP::coef = 0;
|
|
|
|
uint8* SDSP::cpu_ram = 0;
|
|
|
|
uint16 SDSP::cr = 0;
|
|
|
|
uint8 SDSP::reg_stack_ptr[4];
|
|
|
|
// lets make stack depth to 32 for now
|
|
|
|
uint16 SDSP::reg_stack[4][DSP_STACK_DEPTH];
|
|
|
|
void (*SDSP::irq_request)() = NULL;
|
|
|
|
bool SDSP::exception_in_progress_hack = false;
|
|
|
|
|
|
|
|
// for debugger only
|
|
|
|
uint32 SDSP::iram_crc = 0;
|
|
|
|
uint64 SDSP::step_counter = 0;
|
|
|
|
|
|
|
|
|
|
|
|
//-------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
static bool CR_HALT = true;
|
|
|
|
static bool CR_EXTERNAL_INT = false;
|
|
|
|
|
|
|
|
void UpdateCachedCR()
|
|
|
|
{
|
|
|
|
CR_HALT = (g_dsp.cr & 0x4) != 0;
|
|
|
|
CR_EXTERNAL_INT = (g_dsp.cr & 0x02) != 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//-------------------------------------------------------------------------------
|
|
|
|
void (*dsp_op[])(uint16 opc) =
|
|
|
|
{
|
|
|
|
dsp_op0, dsp_op1, dsp_op2, dsp_op3,
|
|
|
|
dsp_op4, dsp_op5, dsp_op6, dsp_op7,
|
|
|
|
dsp_op8, dsp_op9, dsp_opab, dsp_opab,
|
|
|
|
dsp_opcd, dsp_opcd, dsp_ope, dsp_opf,
|
|
|
|
};
|
|
|
|
|
|
|
|
void dbg_error(char* err_msg)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void gdsp_init()
|
|
|
|
{
|
|
|
|
g_dsp.irom = (uint16*)malloc(DSP_IROM_SIZE * sizeof(uint16));
|
|
|
|
g_dsp.iram = (uint16*)malloc(DSP_IRAM_SIZE * sizeof(uint16));
|
|
|
|
g_dsp.drom = (uint16*)malloc(DSP_DROM_SIZE * sizeof(uint16));
|
|
|
|
g_dsp.dram = (uint16*)malloc(DSP_DRAM_SIZE * sizeof(uint16));
|
|
|
|
g_dsp.coef = (uint16*)malloc(DSP_COEF_SIZE * sizeof(uint16));
|
|
|
|
|
|
|
|
for (int i = 0; i < DSP_IRAM_SIZE; i++)
|
|
|
|
{
|
|
|
|
g_dsp.iram[i] = 0x0021; // HALT opcode
|
|
|
|
}
|
|
|
|
|
|
|
|
for (int i = 0; i < DSP_DRAM_SIZE; i++)
|
|
|
|
{
|
|
|
|
g_dsp.dram[i] = 0x0021; // HALT opcode
|
|
|
|
}
|
|
|
|
|
|
|
|
for (int i = 0; i < 32; i++)
|
|
|
|
{
|
|
|
|
g_dsp.r[i] = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
|
|
{
|
|
|
|
g_dsp.reg_stack_ptr[i] = 0;
|
|
|
|
|
|
|
|
for (int j = 0; j < DSP_STACK_DEPTH; j++)
|
|
|
|
{
|
|
|
|
g_dsp.reg_stack[i][j] = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// copied from a real console after the custom UCode has been loaded
|
|
|
|
g_dsp.r[0x08] = 0xffff;
|
|
|
|
g_dsp.r[0x09] = 0xffff;
|
|
|
|
g_dsp.r[0x0a] = 0xffff;
|
|
|
|
g_dsp.r[0x0b] = 0xffff;
|
|
|
|
|
|
|
|
g_dsp.cr = 0x804;
|
|
|
|
gdsp_ifx_init();
|
|
|
|
|
|
|
|
UpdateCachedCR();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void gdsp_reset()
|
|
|
|
{
|
|
|
|
// _assert_msg_(0, "gdsp_reset()");
|
|
|
|
_assert_msg_(MASTER_LOG, !g_dsp.exception_in_progress_hack, "assert while exception");
|
|
|
|
g_dsp.pc = DSP_RESET_VECTOR;
|
|
|
|
g_dsp.exception_in_progress_hack = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
uint8 gdsp_exceptions = 0;
|
|
|
|
void gdsp_generate_exception(uint8 level)
|
|
|
|
{
|
|
|
|
gdsp_exceptions |= 1 << level;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool gdsp_load_rom(char* fname)
|
|
|
|
{
|
|
|
|
FILE* pFile = fopen(fname, "rb");
|
|
|
|
|
|
|
|
if (pFile)
|
|
|
|
{
|
|
|
|
fread(g_dsp.irom, 1, DSP_IRAM_SIZE, pFile);
|
|
|
|
fclose(pFile);
|
|
|
|
return(true);
|
|
|
|
}
|
|
|
|
|
|
|
|
return(false);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool gdsp_load_coef(char* fname)
|
|
|
|
{
|
|
|
|
FILE* pFile = fopen(fname, "rb");
|
|
|
|
|
|
|
|
if (pFile)
|
|
|
|
{
|
|
|
|
fread(g_dsp.coef, 1, DSP_COEF_SIZE, pFile);
|
|
|
|
fclose(pFile);
|
|
|
|
return(true);
|
|
|
|
}
|
|
|
|
|
|
|
|
return(false);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void gdsp_write_cr(uint16 val)
|
|
|
|
{
|
|
|
|
// reset
|
|
|
|
if (val & 0x0001)
|
|
|
|
{
|
|
|
|
gdsp_reset();
|
|
|
|
}
|
|
|
|
|
|
|
|
val &= ~0x0001;
|
|
|
|
|
|
|
|
// update cr
|
|
|
|
g_dsp.cr = val;
|
|
|
|
|
|
|
|
UpdateCachedCR();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
uint16 gdsp_read_cr()
|
|
|
|
{
|
|
|
|
if (g_dsp.pc & 0x8000)
|
|
|
|
{
|
|
|
|
g_dsp.cr |= 0x800;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
g_dsp.cr &= ~0x800;
|
|
|
|
}
|
|
|
|
|
|
|
|
UpdateCachedCR();
|
|
|
|
|
|
|
|
return(g_dsp.cr);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
// special loop step.. because exception in loop or loopi fails
|
|
|
|
// dunno how we have to fix it
|
|
|
|
// atm we execute this instructions directly inside the loop command
|
|
|
|
// so it cant be interrupted by an exception
|
|
|
|
void gdsp_loop_step()
|
|
|
|
{
|
|
|
|
g_dsp.err_pc = g_dsp.pc;
|
|
|
|
uint16 opc = dsp_fetch_code();
|
|
|
|
dsp_op[opc >> 12](opc);
|
|
|
|
}
|
|
|
|
|
|
|
|
u16 HLE_ROM_80E7_81F8();
|
|
|
|
void hacks();
|
|
|
|
void gdsp_step()
|
|
|
|
{
|
|
|
|
g_dsp.step_counter++;
|
|
|
|
|
|
|
|
if (g_dsp.pc == 0x80e7)
|
|
|
|
{
|
|
|
|
//g_dsp.pc = HLE_ROM_80E7_81F8();
|
|
|
|
}
|
|
|
|
|
|
|
|
g_dsp.err_pc = g_dsp.pc;
|
|
|
|
|
|
|
|
#if PROFILE
|
|
|
|
ProfilerAddDelta(g_dsp.err_pc, 1);
|
|
|
|
if (g_dsp.step_counter == 1)
|
|
|
|
{
|
|
|
|
ProfilerInit();
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((g_dsp.step_counter & 0xFFFFF) == 0)
|
|
|
|
{
|
|
|
|
ProfilerDump(g_dsp.step_counter);
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
uint16 opc = dsp_fetch_code();
|
|
|
|
dsp_op[opc >> 12](opc);
|
|
|
|
|
|
|
|
uint16& rLoopCounter = g_dsp.r[DSP_REG_ST0 + 3];
|
|
|
|
|
|
|
|
if (rLoopCounter > 0)
|
|
|
|
{
|
|
|
|
const uint16& rCallAddress = g_dsp.r[DSP_REG_ST0 + 0];
|
|
|
|
const uint16& rLoopAddress = g_dsp.r[DSP_REG_ST0 + 2];
|
|
|
|
|
|
|
|
if (g_dsp.pc == (rLoopAddress + 1))
|
|
|
|
{
|
|
|
|
rLoopCounter--;
|
|
|
|
|
|
|
|
if (rLoopCounter > 0)
|
|
|
|
{
|
|
|
|
g_dsp.pc = rCallAddress;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
// end of loop
|
|
|
|
dsp_reg_load_stack(0);
|
|
|
|
dsp_reg_load_stack(2);
|
|
|
|
dsp_reg_load_stack(3);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// check if there is an external interrupt
|
|
|
|
if (CR_EXTERNAL_INT)
|
|
|
|
{
|
|
|
|
if (dsp_SR_is_flag_set(FLAG_ENABLE_INTERUPT) && (g_dsp.exception_in_progress_hack == false))
|
|
|
|
{
|
|
|
|
// level 7 is the interrupt exception
|
|
|
|
gdsp_generate_exception(7);
|
|
|
|
g_dsp.cr &= ~0x0002;
|
|
|
|
UpdateCachedCR();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// check exceptions
|
|
|
|
if ((gdsp_exceptions > 0) && (!g_dsp.exception_in_progress_hack))
|
|
|
|
{
|
|
|
|
for (uint8 i=0; i<8; i++)
|
|
|
|
{
|
|
|
|
if (gdsp_exceptions & (1<<i))
|
|
|
|
{
|
|
|
|
_assert_msg_(MASTER_LOG, !g_dsp.exception_in_progress_hack, "assert while exception");
|
|
|
|
|
|
|
|
dsp_reg_store_stack(DSP_STACK_C, g_dsp.pc);
|
|
|
|
dsp_reg_store_stack(DSP_STACK_D, g_dsp.r[R_SR]);
|
|
|
|
|
|
|
|
g_dsp.pc = i * 2;
|
|
|
|
gdsp_exceptions &= ~(1<<i);
|
|
|
|
|
|
|
|
g_dsp.exception_in_progress_hack = true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool gdsp_running;
|
|
|
|
extern volatile uint32 dsp_running;
|
|
|
|
|
|
|
|
bool gdsp_run()
|
|
|
|
{
|
|
|
|
gdsp_running = true;
|
|
|
|
|
|
|
|
while (!CR_HALT)
|
|
|
|
{
|
|
|
|
gdsp_step();
|
|
|
|
}
|
|
|
|
|
|
|
|
gdsp_running = false;
|
|
|
|
return(true);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
bool gdsp_runx(uint16 cnt)
|
|
|
|
{
|
|
|
|
gdsp_running = true;
|
|
|
|
|
|
|
|
while (!(g_dsp.cr & 0x4) && gdsp_running)
|
|
|
|
{
|
|
|
|
gdsp_step();
|
|
|
|
cnt--;
|
|
|
|
|
|
|
|
if (cnt == 0)
|
|
|
|
{
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
gdsp_running = false;
|
|
|
|
return(true);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void gdsp_stop()
|
|
|
|
{
|
|
|
|
gdsp_running = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
//
|
|
|
|
// From fires for fires :)
|
|
|
|
//
|
|
|
|
//
|
|
|
|
|
|
|
|
|
|
|
|
#include "disassemble.h"
|
|
|
|
#include "WaveFile.h"
|
|
|
|
#include "Mixer.h"
|
|
|
|
|
|
|
|
uint16 r30 = 0, r31 = 0;
|
|
|
|
extern WaveFileWriter g_wave_writer;
|
|
|
|
|
|
|
|
extern uint16 dsp_swap16(uint16 x);
|
|
|
|
void Hacks()
|
|
|
|
{
|
|
|
|
// if (g_wave_writer.GetAudioSize() > 1024*1024*1)
|
|
|
|
|
|
|
|
/* if (g_dsp.pc == 0x165)
|
|
|
|
{
|
|
|
|
PanicAlert("Opcode_06");
|
|
|
|
|
|
|
|
}
|
|
|
|
if (g_dsp.pc == 0x43b)
|
|
|
|
{
|
|
|
|
PanicAlert("Opcode_14");
|
|
|
|
|
|
|
|
}
|
|
|
|
if (g_dsp.pc == 0xb37)
|
|
|
|
{
|
|
|
|
PanicAlert("Opcode_08");
|
|
|
|
|
|
|
|
}*/
|
|
|
|
/* if (g_dsp.pc == 0x1bc)
|
|
|
|
{
|
|
|
|
r30 = g_dsp.r[30];
|
|
|
|
r31 = g_dsp.r[31];
|
|
|
|
}
|
|
|
|
else if (g_dsp.pc == 0x384)
|
|
|
|
{
|
|
|
|
// if ((r30 == 0x1bc) && (r31 == 0xaff))
|
|
|
|
{
|
|
|
|
//PanicAlert("%x, %x", r30, r31);
|
|
|
|
|
|
|
|
const int numSamples = 0x280;
|
|
|
|
static short Buffer[numSamples];
|
|
|
|
|
|
|
|
uint16 bufferAddr = 0x280; //dsp_dmem_read(0xe44);
|
|
|
|
for (int i=0; i<numSamples; i++)
|
|
|
|
{
|
|
|
|
Buffer[i] = dsp_dmem_read(bufferAddr+i);
|
|
|
|
}
|
|
|
|
|
|
|
|
g_wave_writer.AddStereoSamples(Buffer, numSamples/2); // 2 channels
|
|
|
|
|
|
|
|
if (g_wave_writer.GetAudioSize() > 1024*1024*2)
|
|
|
|
{
|
|
|
|
//PanicAlert("%x", bufferAddr);
|
|
|
|
g_wave_writer.Stop();
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} */
|
|
|
|
|
|
|
|
if (g_dsp.pc == 0x468)
|
|
|
|
{
|
|
|
|
int numSamples = g_dsp.r[25] / 2;
|
|
|
|
uint16 bufferAddr = g_dsp.r[27];
|
|
|
|
|
|
|
|
// PanicAlert("%x %x", bufferAddr, numSamples);
|
|
|
|
|
|
|
|
short samples[1024];
|
|
|
|
for (int i=0; i<numSamples; i++)
|
|
|
|
{
|
|
|
|
samples[i] = dsp_dmem_read(bufferAddr+i);
|
|
|
|
}
|
|
|
|
Mixer_PushSamples(samples, numSamples / 2, 32000); //sample_rate);
|
|
|
|
|
|
|
|
g_wave_writer.AddStereoSamples(samples, numSamples/2); // 2 channels
|
|
|
|
|
|
|
|
if (g_wave_writer.GetAudioSize() > 1024*1024*2)
|
|
|
|
{
|
|
|
|
//PanicAlert("%x", bufferAddr);
|
|
|
|
g_wave_writer.Stop();
|
|
|
|
exit(1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|