apudebug.cpp

著名SFC模拟器Snes9x的源代码。

/*
 * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 *
 * (c) Copyright 1996 - 2001 Gary Henderson ([e-mail]) and
 *                           Jerremy Koot ([e-mail])
 *
 * Super FX C emulator code 
 * (c) Copyright 1997 - 1999 Ivar ([e-mail]) and
 *                           Gary Henderson.
 * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
 *
 * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
 * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
 * C4 C code (c) Copyright 2001 Gary Henderson ([e-mail]).
 *
 * DOS port code contains the works of other authors. See headers in
 * individual files.
 *
 * Snes9x homepage: www.snes9x.com
 *
 * Permission to use, copy, modify and distribute Snes9x in both binary and
 * source form, for non-commercial purposes, is hereby granted without fee,
 * providing that this license information and copyright notice appear with
 * all copies and any derived work.
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event shall the authors be held liable for any damages
 * arising from the use of this software.
 *
 * Snes9x is freeware for PERSONAL USE only. Commercial users should
 * seek permission of the copyright holders first. Commercial use includes
 * charging money for Snes9x or software derived from Snes9x.
 *
 * The copyright holders request that bug fixes and improvements to the code
 * should be forwarded to them so everyone can benefit from the modifications
 * in future versions.
 *
 * Super NES and Super Nintendo Entertainment System are trademarks of
 * Nintendo Co., Limited and its subsidiary companies.
 */
#include "snes9x.h"
#include "spc700.h"
#include "apu.h"
#include "soundux.h"
#include "cpuexec.h"

#ifdef SPCTOOL
#include "spctool/spc700.h"
#endif

#ifdef DEBUGGER
extern int NoiseFreq [32];

FILE *apu_trace = NULL;

static char *S9xMnemonics [256] = {
"NOP", "TCALL0", "SET0 $%02X", "BBS0 $%02X,$%04X",
"OR A,$%02X", "OR A,$%04X", "OR A,(X)", "OR A,($%02X+X)",
"OR A,#$%02X", "OR $%02X,$%02X", "OR1 C,$%04X,%d", "ASL $%02X",
"ASL $%04X", "PUSH PSW", "TSET1 $%04X", "BRK",
"BPL $%04X", "TCALL1", "CLR0 $%02X", "BBC0 $%02X,$%04X",
"OR A,$%02X+X", "OR A,$%04X+X", "OR A,$%04X+Y", "OR A,($%02X)+Y",
"OR $%02X,#$%02X", "OR (X),(Y)", "DECW $%02X", "ASL $%02X+X",
"ASL A", "DEC X", "CMP X,$%04X", "JMP ($%04X+X)",
"CLRP", "TCALL2", "SET1 $%02X", "BBS1 $%02X,$%04X",
"AND A,$%02X", "AND A,$%04X", "AND A,(X)", "AND A,($%02X+X)",
"AND A,$%02X", "AND $%02X,$%02X", "OR1 C,$%04X, not %d", "ROL $%02X",
"ROL $%04X", "PUSH A", "CBNE $%02X,$%04X", "BRA $%04X",
"BMI $%04X", "TCALL3", "CLR1 $%02X", "BBC1 $%02X,$%04X",
"AND A,$%02X+X", "AND A,$%04X+X", "AND A,$%04X+Y", "AND A,($%02X)+Y",
"AND $%02X,#$%02X", "AND (X),(Y)", "INCW $%02X", "ROL $%02X+X",
"ROL A", "INC X", "CMP X,$%02X", "CALL $%04X",
"SETP", "TCALL4", "SET2 $%02X", "BBS2 $%02X,$%04X",
"EOR A,$%02X", "EOR A,$%04X", "EOR A,(X)", "EOR A,($%02X+X)",
"EOR A,#$%02X", "EOR $%02X,$%02X", "AND1 C,$%04X,%d", "LSR $%02X",
"LSR $%04X", "PUSH X", "TCLR1 $%04X", "PCALL $%02X",
"BVC $%04X", "TCALL5", "CLR2 $%02X", "BBC2 $%02X,$%04X",
"EOR A,$%02X+X", "EOR A,$%04X+X", "EOR A,$%04X+Y", "EOR A,($%02X)+Y",
"EOR $%02X,#$%02X", "EOR (X),(Y)", "CMPW YA,$%02X", "LSR $%02X+X",
"LSR A", "MOV X,A", "CMP Y,$%04X", "JMP $%04X",
"CLRC", "TCALL6", "SET3 $%02X", "BBS3 $%02X,$%04X",
"CMP A,$%02X", "CMP A,$%04X", "CMP A,(X)", "CMP A,($%02X+X)",
"CMP A,#$%02X", "CMP $%02X,$%02X", "AND1 C, $%04X, not %d", "ROR $%02X",
"ROR $%04X", "PUSH Y", "DBNZ $%02X,$%04X", "RET",
"BVS $%04X", "TCALL7", "CLR3 $%02X", "BBC3 $%02X,$%04X",
"CMP A,$%02X+X", "CMP A,$%04X+X", "CMP A,$%04X+Y", "CMP A,($%02X)+Y",
"CMP $%02X,#$%02X", "CMP (X),(Y)", "ADDW YA,$%02X", "ROR $%02X+X",
"ROR A", "MOV A,X", "CMP Y,$%02X", "RETI",
"SETC", "TCALL8", "SET4 $%02X", "BBS4 $%02X,$%04X",
"ADC A,$%02X", "ADC A,$%04X", "ADC A,(X)", "ADC A,($%02X+X)",
"ADC A,#$%02X", "ADC $%02X,$%02X", "EOR1 C,%04,%d", "DEC $%02X",
"DEC $%04X", "MOV Y,#$%02X", "POP PSW", "MOV $%02X,#$%02X",
"BCC $%04X", "TCALL9", "CLR4 $%02X", "BBC4 $%02X,$%04X",
"ADC A,$%02X+X", "ADC A,$%04X+X", "ADC A,$%04X+Y", "ADC A,($%02X)+Y",
"ADC $%02X,#$%02X", "ADC (X),(Y)", "SUBW YA,$%02X", "DEC $%02X+X",
"DEC A", "MOV X,SP", "DIV YA,X", "XCN A",
"EI", "TCALL10", "SET5 $%02X", "BBS5 $%02X,$%04X",
"SBC A,$%02X", "SBC A,$%04X", "SBC A,(X)", "SBC A,($%02X+X)",
"SBC A,#$%02X", "SBC $%02X,$%02X", "MOV1 C,$%04X,%d", "INC $%02X",
"INC $%04X", "CMP Y,#$%02X", "POP A", "MOV (X)+,A",
"BCS $%04X", "TCALL11", "CLR5 $%02X", "BBC5 $%02X,$%04X",
"SBC A,$%02X+X", "SBC A,$%04X+X", "SBC A,$%04X+Y", "SBC A,($%02X)+Y",
"SBC $%02X,#$%02X", "SBC (X),(Y)", "MOVW YA,$%02X", "INC $%02X+X",
"INC A", "MOV SP,X", "DAS", "MOV A,(X)+",
"DI", "TCALL12", "SET6 $%02X", "BBS6 $%02X,$%04X",
"MOV $%02X,A", "MOV $%04X,A", "MOV (X),A", "MOV ($%02X+X),A",
"CMP X,#$%02X", "MOV $%04X,X", "MOV1 $%04X,%d,C", "MOV $%02X,Y",
"MOV $%04X,Y", "MOV X,#$%02X", "POP X", "MUL YA",
"BNE $%04X", "TCALL13", "CLR6 $%02X", "BBC6 $%02X,$%04X",
"MOV $%02X+X,A", "MOV $%04X+X,A", "MOV $%04X+Y,A", "MOV ($%02X)+Y,A",
"MOV $%02X,X", "MOV $%02X+Y,X", "MOVW $%02X,YA", "MOV $%02X+X,Y",
"DEC Y", "MOV A,Y", "CBNE $%02X+X,$%04X", "DAA",
"CLRV", "TCALL14", "SET7 $%02X", "BBS7 $%02X,$%04X",
"MOV A,$%02X", "MOV A,$%04X", "MOV A,(X)", "MOV A,($%02X+X)",
"MOV A,#$%02X", "MOV X,$%04X", "NOT1 $%04X,%d", "MOV Y,$%02X",
"MOV Y,$%04X", "NOTC", "POP Y", "SLEEP",
"BEQ $%04X", "TCALL15", "CLR7 $%02X", "BBC7 $%02X,$%04X",
"MOV A,$%02X+X", "MOV A,$%04X+X", "MOV A,$%04X+Y", "MOV A,($%02X)+Y",
"MOV X,$%02X", "MOV X,$%02X+Y", "MOV $%02X,$%02X", "MOV Y,$%02X+X",
"INC Y", "MOV Y,A", "DBNZ Y,$%04X", "STOP"
};

#undef ABS

#define DP 0
#define ABS 1
#define IM 2
#define DP2DP 3
#define DPIM 4
#define DPREL 5
#define ABSBIT 6
#define REL 7

static uint8 Modes [256] = {
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, IM, ABS, IM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, ABS, ABS,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, IM, DPREL, REL,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, DP, ABS,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, IM, ABS, DP,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, ABS, ABS,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, IM, DPREL, IM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, DP, IM,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, DP, IM, DPIM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, IM, IM,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, DP2DP, ABSBIT, DP,
    ABS, DP, IM, IM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DPIM, IM, DP, DP,
    IM, IM, IM, IM,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, ABS, ABSBIT, DP,
    ABS, DP, IM, IM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DP, DP, DP, DP,
    IM, IM, DPREL, IM,
    IM, IM, DP, DPREL,
    DP, ABS, IM, DP,
    DP, ABS, ABSBIT, DP,
    ABS, IM, IM, IM,
    REL, IM, DP, DPREL,
    DP, ABS, ABS, DP,
    DP, DP, DP2DP, DP,
    IM, IM, REL, IM
};

static uint8 ModesToBytes [] = {
    2, 3, 1, 3, 3, 3, 3, 2
};

static FILE *SoundTracing = NULL;

void S9xOpenCloseSoundTracingFile (bool8 open)
{
    if (open && !SoundTracing)
    {
	SoundTracing = fopen ("sound_trace.log", "w");
    }
    else
    if (!open && SoundTracing)
    {
	fclose (SoundTracing);
	SoundTracing = NULL;
    }
}

void S9xTraceSoundDSP (const char *s, int i1 = 0, int i2 = 0, int i3 = 0,
		       int i4 = 0, int i5 = 0, int i6 = 0, int i7 = 0)
{
    fprintf (SoundTracing, s, i1, i2, i3, i4, i5, i6, i7);
}

int S9xTraceAPU ()
{
    char buffer [200];
    
    uint8 b = S9xAPUOPrint (buffer, IAPU.PC - IAPU.RAM);
    if (apu_trace == NULL)
	apu_trace = fopen ("apu_trace.log", "wb");

    fprintf (apu_trace, "%s\n", buffer);
    return (b);
}

int S9xAPUOPrint (char *buffer, uint16 Address)
{
    char mnem [100];
    uint8 *p = IAPU.RAM + Address;
    int mode = Modes [*p];
    int bytes = ModesToBytes [mode];
    
    switch (bytes)
    {
    case 1:
	sprintf (buffer, "%04X %02X       ", p - IAPU.RAM, *p);
	break;
    case 2:
	sprintf (buffer, "%04X %02X %02X    ", p - IAPU.RAM, *p,
		 *(p + 1));
	break;
    case 3:
	sprintf (buffer, "%04X %02X %02X %02X ", p - IAPU.RAM, *p,
		 *(p + 1), *(p + 2));
	break;
    }

    switch (mode)
    {
    case DP:
	sprintf (mnem, S9xMnemonics [*p], *(p + 1));
	break;
    case ABS:
	sprintf (mnem, S9xMnemonics [*p], *(p + 1) + (*(p + 2) << 8));
	break;
    case IM:
	sprintf (mnem, S9xMnemonics [*p]);
	break;
    case DP2DP:
	sprintf (mnem, S9xMnemonics [*p], *(p + 2), *(p + 1));;
	break;
    case DPIM:
	sprintf (mnem, S9xMnemonics [*p], *(p + 2), *(p + 1));;
	break;
    case DPREL:
	sprintf (mnem, S9xMnemonics [*p], *(p + 1),
		(int) (p + 3 - IAPU.RAM) + (signed char) *(p + 2));
	break;
    case ABSBIT:
	sprintf (mnem, S9xMnemonics [*p], (*(p + 1) + (*(p + 2) << 8)) & 0x1fff,
		*(p + 2) >> 5);
	break;
    case REL:
	sprintf (mnem, S9xMnemonics [*p],
		(int) (p + 2 - IAPU.RAM) + (signed char) *(p + 1));
	break;
    }

    sprintf (buffer, "%s %-20s A:%02X X:%02X Y:%02X S:%02X P:%c%c%c%c%c%c%c%c %03dl %04dl %04dl",
	     buffer, mnem,
	     APURegisters.YA.B.A, APURegisters.X, APURegisters.YA.B.Y,
	     APURegisters.S,
	     APUCheckNegative () ? 'N' : 'n',
	     APUCheckOverflow () ? 'V' : 'v',
	     APUCheckDirectPage () ? 'P' : 'p',
	     APUCheckBreak () ? 'B' : 'b',
	     APUCheckHalfCarry () ? 'H' : 'h',
	     APUCheckInterrupt () ? 'I' : 'i',
	     APUCheckZero () ? 'Z' : 'z',
	     APUCheckCarry () ? 'C' : 'c',
	     CPU.V_Counter,
	     CPU.Cycles,
	     APU.Cycles);
		
    return (bytes);
}

const char *as_binary (uint8 data)
{
    static char buf [9];

    for (int i = 7; i >= 0; i--)
	buf [7 - i] = ((data & (1 << i)) != 0) + '0';

    buf [8] = 0;
    return (buf);
}

void S9xPrintAPUState ()
{
    printf ("Master volume left: %d, right: %d\n",
	    SoundData.master_volume_left, SoundData.master_volume_right);
    printf ("Echo: %s %s, Delay: %d Feedback: %d Left: %d Right: %d\n",
	    SoundData.echo_write_enabled ? "on" : "off",
	    as_binary (SoundData.echo_enable),
	    SoundData.echo_buffer_size >> 9,
	    SoundData.echo_feedback, SoundData.echo_volume_left,
	    SoundData.echo_volume_right);

    printf ("Noise: %s, Frequency: %d\n", as_binary (APU.DSP [APU_NON]),
	    NoiseFreq [APU.DSP [APU_FLG] & 0x1f]);
    extern int FilterTaps [8];

    printf ("Filter: ");
    for (int i = 0; i < 8; i++)
	printf ("%03d, ", FilterTaps [i]);
    printf ("\n");
    for (int J = 0; J < 8; J++)
    {
	register Channel *ch = &SoundData.channels[J];

	printf ("%d: ", J);
	if (ch->state == SOUND_SILENT)
	{
	    printf ("off\n");
	}
	else
	if (!(so.sound_switch & (1 << J)))
	    printf ("muted by user using channel on/off toggle\n");
	else
	{
	    int freq = ch->hertz;
	    if (APU.DSP [APU_NON] & (1 << J)) //ch->type == SOUND_NOISE)
	    {
		freq = NoiseFreq [APU.DSP [APU_FLG] & 0x1f];
		printf ("noise, ");
	    }
	    else
		printf ("sample %d, ", APU.DSP [APU_SRCN + J * 0x10]);

	    printf ("freq: %d", freq);
	    if (J > 0 && (SoundData.pitch_mod & (1 << J)) &&
		ch->type != SOUND_NOISE)
	    {
		printf ("(mod), ");
	    }
	    else
		printf (", ");

	    printf ("left: %d, right: %d, ",
		    ch->volume_left, ch->volume_right);

	    static char* envelope [] = 
	    {
		"silent", "attack", "decay", "sustain", "release", "gain",
		"inc_lin", "inc_bent", "dec_lin", "dec_exp"
	    };
	    printf ("%s envx: %d, target: %d, %ld", ch->state > 9 ? "???" : envelope [ch->state],
		    ch->envx, ch->envx_target, ch->erate);
	    printf ("\n");
	}
    }
}
#endif