📄 spc700.s

📁 著名SFC模拟器Snes9x的源代码。
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/* * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator. * * (c) Copyright 1996 - 2001 Gary Henderson (gary@daniver.demon.co.uk) and *                           Jerremy Koot (jkoot@snes9x.com) * * Super FX C emulator code  * (c) Copyright 1997 - 1999 Ivar (Ivar@snes9x.com) 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 (gary@daniver.demon.co.uk). * * 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 "asmstruc.h"#include "spcops.h".section	.rodata.LC2:	.string	"Sound CPU in unknown state executing %s at %04X\n%s\n".textSTOP:	subl $100,%esp	pushl %esi	pushl %ebx	movl APUPC,%edx	movl APURAM,%eax	subl %eax,%edx	movl %edx,%eax	andl $65535,%eax	movl 112(%esp),%esi	pushl %eax	leal 12(%esp),%ebx	pushl %ebx#ifdef DEBUGGER	call S9xAPUOPrint#endif	pushl %ebx	movl APUPC,%edx	movl APURAM,%eax	subl %eax,%edx	movl %edx,%eax	pushl %eax	pushl %esi	pushl $.LC2	pushl $String	call sprintf	pushl $String	pushl $5	pushl $4	call S9xMessage	xorl %edx,%edx	movl CPU,%ecx	addl $40,%esp	movb %dl,APUTimerEnabled+2	movb %dl,APUTimerEnabled+1	popl %ebx	movb %dl,APUTimerEnabled	orl $1,%ecx	popl %esi	movb %dl,APUExecuting	movl %ecx,CPU	addl $100,%esp	retApuOp00:	movl APUPC,%eax	incl %eax	movl %eax,APUPC	retApuOp01:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb ApuS,%dl	addb $-2,%dl	movb APUExtraRAM+31,%al	movb %dl,ApuS	andl $255,%eax	movb APUExtraRAM+30,%dl	sall $8,%eax	andl $255,%edx	movl APURAM,%ecx	addl %eax,%edx	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp11:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+29,%al	movb APUExtraRAM+28,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp21:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+27,%al	movb APUExtraRAM+26,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp31:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+25,%al	movb APUExtraRAM+24,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp41:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+23,%al	movb APUExtraRAM+22,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp51:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+21,%al	movb APUExtraRAM+20,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp61:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+19,%al	movb APUExtraRAM+18,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp71:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+17,%al	movb APUExtraRAM+16,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp81:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+15,%al	movb APUExtraRAM+14,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp91:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+13,%al	movb APUExtraRAM+12,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpA1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+11,%al	movb APUExtraRAM+10,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpB1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+9,%al	movb APUExtraRAM+8,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpC1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+7,%al	movb APUExtraRAM+6,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpD1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+5,%al	movb APUExtraRAM+4,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpE1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+3,%al	movb APUExtraRAM+2,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOpF1:	pushl %ebx	movl APURAM,%edx	movl APUPC,%ebx	movl %edx,%eax	subl %eax,%ebx	movb ApuS,%cl	movl %ebx,%eax	andl $255,%ecx	incl %eax	movw %ax,255(%edx,%ecx)	movb APUExtraRAM+1,%al	movb APUExtraRAM+0,%dl	andl $255,%eax	movb ApuS,%bl	andl $255,%edx	sall $8,%eax	movl APURAM,%ecx	addb $-2,%bl	addl %eax,%edx	movb %bl,ApuS	addl %ecx,%edx	popl %ebx	movl %edx,APUPC	retApuOp3F:	pushl %ebx	movl APUPC,%eax	movw 1(%eax),%ax	andl $65535,%eax	movl APURAM,%edx	movl %eax,APUAddress	movl %edx,%eax	movb ApuS,%cl	movl APUPC,%ebx	addl $-3,%eax	andl $255,%ecx	subl %eax,%ebx	movw %bx,255(%edx,%ecx)	movb ApuS,%bl	movl APUAddress,%eax	movl APURAM,%edx	addb $-2,%bl	addl %edx,%eax	movb %bl,ApuS	movl %eax,APUPC	popl %ebx	retApuOp4F:	pushl %ebx	movl APUPC,%eax	movb 1(%eax),%cl	movl APURAM,%edx	movb %cl,Work8	movl %edx,%eax	movl APUPC,%ebx	movb ApuS,%cl	addl $-2,%eax	andl $255,%ecx	subl %eax,%ebx	movw %bx,255(%edx,%ecx)	movb Work8,%al	movb ApuS,%bl	andl $255,%eax	movl APURAM,%edx	addb $-2,%bl	addl $65280,%eax	movb %bl,ApuS	addl %edx,%eax	popl %ebx	movl %eax,APUPC	retApuOp02:	movl APUPC,%eax	movb 1(%eax),%cl	xorl %eax,%eax	movb %cl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $1,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%eax	addl $2,%eax	addl $8,%esp	movl %eax,APUPC	retApuOp22:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $2,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp42:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $4,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp62:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $8,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp82:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $16,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpA2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $32,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpC2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $64,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpE2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	orb $128,%al	addl $4,%esp	andl $255,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp12:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $254,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp32:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $253,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp52:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $251,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp72:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $247,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOp92:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $239,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpB2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $223,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpD2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $191,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	retApuOpF2:	movl APUPC,%eax	movb 1(%eax),%dl	xorl %eax,%eax	movb %dl,%al	pushl %eax	pushl %eax	call S9xAPUGetByteZ__FUc	addl $4,%esp	andl $127,%eax	pushl %eax	call S9xAPUSetByteZ__FUcUc	movl APUPC,%ecx	addl $2,%ecx	addl $8,%esp	movl %ecx,APUPC	ret
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