📄 asmaddr.h

📁 SFC游戏模拟器 snes9x 1.43 的原代码
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/*******************************************************************************  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.   (c) Copyright 1996 - 2002 Gary Henderson (gary.henderson@ntlworld.com) and                            Jerremy Koot (jkoot@snes9x.com)  (c) Copyright 2001 - 2004 John Weidman (jweidman@slip.net)  (c) Copyright 2002 - 2004 Brad Jorsch (anomie@users.sourceforge.net),                            funkyass (funkyass@spam.shaw.ca),                            Joel Yliluoma (http://iki.fi/bisqwit/)                            Kris Bleakley (codeviolation@hotmail.com),                            Matthew Kendora,                            Nach (n-a-c-h@users.sourceforge.net),                            Peter Bortas (peter@bortas.org) and                            zones (kasumitokoduck@yahoo.com)  C4 x86 assembler and some C emulation code  (c) Copyright 2000 - 2003 zsKnight (zsknight@zsnes.com),                            _Demo_ (_demo_@zsnes.com), and Nach  C4 C++ code  (c) Copyright 2003 Brad Jorsch  DSP-1 emulator code  (c) Copyright 1998 - 2004 Ivar (ivar@snes9x.com), _Demo_, Gary Henderson,                            John Weidman, neviksti (neviksti@hotmail.com),                            Kris Bleakley, Andreas Naive  DSP-2 emulator code  (c) Copyright 2003 Kris Bleakley, John Weidman, neviksti, Matthew Kendora, and                     Lord Nightmare (lord_nightmare@users.sourceforge.net  OBC1 emulator code  (c) Copyright 2001 - 2004 zsKnight, pagefault (pagefault@zsnes.com) and                            Kris Bleakley  Ported from x86 assembler to C by sanmaiwashi  SPC7110 and RTC C++ emulator code  (c) Copyright 2002 Matthew Kendora with research by                     zsKnight, John Weidman, and Dark Force  S-DD1 C emulator code  (c) Copyright 2003 Brad Jorsch with research by                     Andreas Naive and John Weidman   S-RTC C emulator code  (c) Copyright 2001 John Weidman    ST010 C++ emulator code  (c) Copyright 2003 Feather, Kris Bleakley, John Weidman and Matthew Kendora  Super FX x86 assembler emulator code   (c) Copyright 1998 - 2003 zsKnight, _Demo_, and pagefault   Super FX C emulator code   (c) Copyright 1997 - 1999 Ivar, Gary Henderson and John Weidman  SH assembler code partly based on x86 assembler code  (c) Copyright 2002 - 2004 Marcus Comstedt (marcus@mc.pp.se)    Specific ports contains the works of other authors. See headers in  individual files.   Snes9x homepage: http://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.*******************************************************************************/#define NONE 0#define READ 1#define WRITE 2#define MODIFY 3#define JUMP 4.macro GetCarry	movb _Carry, %dl	shrb %dl.endm.macro GetNotCarry	cmpb $1, _Carry.endm.macro SetZN	movb %al, _Zero	movb %al, _Negative.endm.macro Set16ZN	movb %ah, _Negative	setnz _Zero.endm.macro SetZNC	setc _Carry	movb %al, _Negative	movb %al, _Zero.endm.macro Set16ZNC	setc _Carry	setnz _Zero	movb %ah, _Negative.endm.macro SetZNCV	setc _Carry	seto _Overflow	movb %al, _Negative	movb %al, _Zero.endm.macro Set16ZNCV	setc _Carry	seto _Overflow	setnz _Zero	movb %ah, _Negative.endm.macro SetZNV	seto _Overflow	movb %al, _Negative	movb %al, _Zero.endm.macro Set16ZNV	seto _Overflow	setnz _Zero	movb %ah, _Negative.endm/************* IMMEDIATE8 ****************/.Macro Immediate8 K A	movb (PC), %al	addl MemSpeed, CYCLES	incl PC.endm/************* IMMEDIATE16 ****************/.macro Immediate16 K A	movw (PC), %ax	addl MemSpeedx2, CYCLES	addl $2, PC.endm/************* Relative ****************/.macro Relative K A	movsbl (PC), %eax	incl PC	addl MemSpeed, CYCLES	movl PC, %edx	subl PCBase, %edx	addl %eax, %edx	andl $0xffff, %edx.endm/************* RelativeLong ****************/.macro RelativeLong K A	xorl %eax, %eax	addl MemSpeedx2, CYCLES	movw (PC), %ax	addl $6, CYCLES	addl $2, PC	movl PC, %edx	subl PCBase, %edx	addl %eax, %edx	andl $0xffff, %edx.endm/************* AbsoluteIndexedIndirect8 ****************/.macro AbsoluteIndexedIndirect8 K A	xorl %edx, %edx	addl MemSpeedx2, CYCLES	movw (PC), %dx	movb %dh, OpenBus	addw XX, %dx	orl  ShiftedPB, %edx	addl $2, PC	call S9xGetWord	movl %eax, %edx	andl $0xffff, %edx.if \A&READ	movb %ah, OpenBus.endif.endm/************* AbsoluteIndirectLong8 ****************/.macro AbsoluteIndirectLong8 K A	movw (PC), %dx	addl MemSpeedx2, CYCLES	movb %dh, OpenBus	addl $2, PC	andl $0xffff, %edx	pushl %edx	call S9xGetWord	popl %edx	pushl %eax	addl $2, %edx	call S9xGetByte.if \A&READ	movb %al, OpenBus.endif	popl %edx	andl $0xff, %eax	andl $0xffff, %edx	sall $16, %eax	orl  %eax, %edx.endm.macro AbsoluteIndirect8 K A	movw (PC), %dx	addl MemSpeedx2, CYCLES	movb %dh, OpenBus	addl $2, PC	andl $0xffff, %edx	call S9xGetWord	movl %eax, %edx	andl $0xffff, %edx.if \A&READ	movb %ah, OpenBus.endif.endm.macro Absolute8 K A	movw (PC), %dx	addl MemSpeedx2, CYCLES.if \A&READ	movb %dh, OpenBus.endif	addl $2, PC	andl $0xffff, %edx	orl  ShiftedDB, %edx.endm.macro AbsoluteLong8 K A.if \A&READ	movb 2(PC), %dl	movb %dl, OpenBus.endif	movl (PC), %edx	addl MemSpeedx2, CYCLES	andl $0xffffff, %edx	addl MemSpeed, CYCLES	add $3, PC.endm.macro Direct8 K A	addl MemSpeed, CYCLES#if 0	cmpb $0, DL	je .Direct8\K	addl $6, CYCLES.Direct8\K:#endif	xorl %edx, %edx	movb (PC), %dl.if \A&READ	movb %dl, OpenBus.endif	addw DD, %dx	incl PC.endm.macro DirectIndirectIndexed8 K A	addl MemSpeed, CYCLES#if 0	cmpb $0, DD	je .DirectIndirectIndexed8\K	addl $6, CYCLES.DirectIndirectIndexed8\K:#endif	xorl %edx, %edx	movb (PC), %dl	movb %dl, OpenBus	addw DD, %dx	incl PC	call S9xGetWord.if \A&READ	movb %ah, OpenBus.endif	movl ShiftedDB, %edx	movw %ax, %dx	xorl %eax, %eax	movw YY, %ax	addl %eax, %edx.endm.macro DirectIndirectIndexedLong8 K A	addl MemSpeed, CYCLES#if 0	cmpb $0, DD	je .DirectIndirectIndexedLong8\K	addl $6, CYCLES.DirectIndirectIndexedLong8\K:#endif	xorl %edx, %edx	movb (PC), %dl	movb %dl, OpenBus	addw DD, %dx	incl PC	pushl %edx	call S9xGetWord	popl %edx	pushw %ax	addw $2, %dx	call S9xGetByte.if \A&READ	movb %al, OpenBus.endif	andl $0xff, %eax	sall $16, %eax	xorl %edx, %edx	popw %ax	movw YY, %dx	addl %eax, %edx	andl $0xffffff, %edx.endm.macro DirectIndexedIndirect8 K A	addl MemSpeed, CYCLES	addl $6, CYCLES#if 0	cmpb $0, DD	je .DirectIndexedIndirect8\K	addl $6, CYCLES.DirectIndexedIndirect8\K:#endif	xorl %edx, %edx	movb (PC), %dl	movb %dl, OpenBus	addw DD, %dx	incl PC	addw XX, %dx	call S9xGetWord.if \A&READ	movb %ah, OpenBus.endif	movl ShiftedDB, %edx	movw %ax, %dx.endm.macro DirectIndexedX8 K A	addl MemSpeed, CYCLES	addl $6, CYCLES#if 0	cmpb $0, DD	je .DirectIndexedX8\K	addl $6, CYCLES.DirectIndexedX8\K:#endif	xorl %edx, %edx	movb (PC), %dl	addw DD, %dx	incl PC.if \A&READ 	movb %dl, OpenBus.endif	addw XX, %dx   testw $Emulation, FLAGS16	jz .DirectIndexedX8done\K   andw $0x00ff, %dx     /* Zero page indexed wraps in emulation mode */.DirectIndexedX8done\K:.endm.macro DirectIndexedY8 K A	addl MemSpeed, CYCLES	addl $6, CYCLES#if 0	cmpb $0, DD	je .DirectIndexedY8\K	addl $6, CYCLES.DirectIndexedY8\K:#endif	xorl %edx, %edx	movb (PC), %dl.if \A&READ	movb %dl, OpenBus.endif		addw DD, %dx	incl PC	addw YY, %dx    testw $Emulation, FLAGS16	jz .DirectIndexedY8done\K    andw $0x00ff, %dx.DirectIndexedY8done\K:.endm.macro AbsoluteIndexedX8 K A	movl ShiftedDB, %edx	xorl %eax, %eax	movw (PC), %dx	movw XX, %ax.if \A&READ	movb %dh, OpenBus.endif	addl $2, PC	addl %eax, %edx	addl MemSpeedx2, CYCLES	andl $0xffffff, %edx.endm.macro AbsoluteIndexedY8 K A	movl ShiftedDB, %edx	xorl %eax, %eax	movw (PC), %dx	movw YY, %ax.if \A&READ	movb %dh, OpenBus.endif	addl $2, PC	addl %eax, %edx	addl MemSpeedx2, CYCLES	andl $0xffffff, %edx.endm.macro AbsoluteLongIndexedX8 K A.if \A&READ	movb 2(PC), %dl	movb %dl, OpenBus.endif	movl (PC), %edx	xorl %eax, %eax	addl $3, PC	movw XX, %ax	addl MemSpeedx2, CYCLES	addl %eax, %edx	addl MemSpeed, CYCLES	andl $0xffffff, %edx.endm.macro DirectIndirect8 K A#if 0	cmpb $0, DL	je .DirectIndirect8\K	addl $6, CYCLES.DirectIndirect8\K:#endif	xorl %edx, %edx	addl MemSpeed, CYCLES	movb (PC), %dl	movb %dl, OpenBus	addw DD, %dx	incl PC	call S9xGetWord.if \A&READ	movb %ah, OpenBus.endif	movl ShiftedDB, %edx	movw %ax, %dx.endm.macro DirectIndirectLong8 K A#if 0	cmpb $0, DL	je .DirectIndirectLong8\K	addl $6, CYCLES.DirectIndirectLong8\K:#endif	xorl %edx, %edx	addl MemSpeed, CYCLES	movb (PC), %dl	movb %dl, OpenBus	addw DD, %dx	incl PC	pushl %edx	call S9xGetWord	popl %edx	pushw %ax	addw $2, %dx	call S9xGetByte.if \A&READ	movb %al, OpenBus.endif	andl $0xff, %eax	sall $16, %eax	popw %ax	movl %eax, %edx.endm.macro StackRelative8 K A	xorl %edx, %edx	addl MemSpeed, CYCLES	movb (PC), %dl.if \A&READ	movb %dl, OpenBus.endif	addl $6, CYCLES	addw SS, %dx	incl PC.endm.macro StackRelativeIndirectIndexed8 K A	xorl %edx, %edx	addl MemSpeed, CYCLES	movb (PC), %dl	movb %dl, OpenBus	addl $12, CYCLES	addw SS, %dx	incl PC	call S9xGetWord.if \A&READ	movb %ah, OpenBus.endif	movl ShiftedDB, %edx	movw %ax, %dx	xorl %eax, %eax	movw YY, %ax	addl %eax, %edx	andl $0xffffff, %edx.endm.macro BranchCheck0 K	cmpb $0, BranchSkip	jz .BranchCheck0S9xExit\K	movb $0, BranchSkip	cmpb $0, SoundSkipMethod	jne .BranchCheck0S9xExit\K	movl PC, %eax	subl PCBase, %eax	cmpw %dx, %ax	jbe .BranchCheck0S9xExit\K	jmp MainAsmLoop.BranchCheck0S9xExit\K:.endm.macro BranchCheck1 K	cmpb $0, BranchSkip	jz .BranchCheck1S9xExit\K	movb $0, BranchSkip	movb SoundSkipMethod, %al	cmpb $0, %al	jne .BranchCheck1Not0\K	movl PC, %eax	subl PCBase, %eax	cmpw %dx, %ax	jbe .BranchCheck1S9xExit\K	jmp MainAsmLoop.BranchCheck1Not0\K:	cmpb $1, %al	jne .BranchCheck1Not1\K	jmp MainAsmLoop.BranchCheck1Not1\K:	cmpb $3, %al	jne .BranchCheck1S9xExit\K	movl PC, %eax	subl PCBase, %eax	cmpw %dx, %ax	jbe .BranchCheck13a\K	jmp MainAsmLoop.BranchCheck13a\K:	movl PCBase, %eax	andl $0xffff, %edx	addl %edx, %eax	movl %eax, PC.BranchCheck1S9xExit\K:.endm.macro BranchCheck2 K	cmpb $0, BranchSkip	jz .BranchCheck2S9xExit\K	movb $0, BranchSkip	movb SoundSkipMethod, %al	cmpb $0, %al	jne .BranchCheck2Not0\K	movl PC, %eax	subl PCBase, %eax	cmpw %dx, %ax	jbe .BranchCheck2S9xExit\K	jmp MainAsmLoop.BranchCheck2Not0\K:	cmpb $1, %al	jne .BranchCheck2Not1\K	movl PCBase, %eax	andl $0xffff, %edx	addl %edx, %eax	movl %eax, PC	jmp MainAsmLoop.BranchCheck2Not1\K:	cmpb $3, %al	jne .BranchCheck2S9xExit\K	movl PC, %eax	subl PCBase, %eax	cmpw %dx, %ax	jbe .BranchCheck23a\K	jmp MainAsmLoop.BranchCheck23a\K:	movl PCBase, %eax	andl $0xffff, %edx	addl %edx, %eax	movl %eax, PC.BranchCheck2S9xExit\K:.endm#if 0.macro PushByte K	addl $8, CYCLES	xorl %edx, %edx	movl RAM, %ecx	movw SS, %dx	movb %al, (%ecx, %edx)	decw SS.endm.macro PushWord K	addl $16, CYCLES	xorl %edx, %edx	movl RAM, %ecx	movw SS, %dx	decl %ecx	movw %ax, (%ecx, %edx)	subw $2, %dx	movw %dx, SS.endm.macro PullByte K	addl $8, CYCLES	xorl %edx, %edx	movl RAM, %eax	movw SS, %dx	incl %edx	movw %dx, SS	movb (%eax, %edx), %al.endm.macro PullWord K	addl $16, CYCLES	xorl %edx, %edx	movl RAM, %eax	movw SS, %edx	addw $2, %dx	movw %dx, SS	movw -1(%eax, %edx), %ax.endm#else.macro PushByte K	movl SS, %edx	andl $0xffff, %edx	call S9xSetByte	decw SS.endm.macro PushByteE K	movl SS, %edx	andl $0x00ff, %edx	movb $0x01, %dh	movw %dx, SS	call S9xSetByte.endm#if 0.macro PushWord K	movl SS, %edx	decl %edx	andl $0xffff, %edx	call S9xSetWord	subw $2, SS.endm#endif#if 1.macro PushWord K	xorl %edx, %edx	movw SS, %dx	pushl %eax	pushl %edx	movb %ah, %al	call S9xSetByte	popl %edx	popl %eax	decw %dx	call S9xSetByte         	subw $2, SS      .endm#endif.macro PushWordE K	xorl %edx, %edx	movw SS, %dx	pushl %eax	pushl %edx	movb %ah, %al	call S9xSetByte	popl %edx	popl %eax	decw %dx	movb $0x01, %dh	call S9xSetByte         	subw $2, SS      .endm.macro PushWordENew K	xorl %edx, %edx	movw SS, %dx	pushl %eax	pushl %edx	movb %ah, %al	call S9xSetByte	popl %edx	popl %eax	decw %dx	call S9xSetByte	movb $0x01, %dh	subw $2, SS      .endm.macro PullByte K	movl SS, %edx	incl %edx	movw %dx, SS	andl $0xffff, %edx	call S9xGetByte.endm.macro PullByteE K	movl SS, %edx	incl %edx	andl $0xffff, %edx	movb $0x01, %dh	call S9xGetByte	movw %dx, SS.endm#if 0.macro PullWord K          movl SS, %edx            incl %edx            andl $0xffff, %edx            call S9xGetWord            addw $2, SS .endm#else.macro PullWord K	movl SS, %edx	incw %dx	andl $0xffff, %edx 	pushl %edx	call S9xGetByte	movb %al, OpenBus	popl %edx	incw %dx	call S9xGetByte	movb %al, %ah	movb OpenBus, %al	movw %dx, SS.endm#endif.macro PullWordE K	movl SS, %edx	andl $0xffff, %edx 	incw %dx	movb $0x01, %dh	pushl %edx	call S9xGetByte	popl %edx	movb %al, OpenBus	incw %dx	movb $0x01, %dh	call S9xGetByte	movb %al, %ah	movb OpenBus, %al	movw %dw, SS.endm.macro PullWordENew K	movl SS, %edx	incw %dx	andl $0xffff, %edx 	pushl %edx	call S9xGetByte	movb %al, OpenBus	popl %edx	incw %dx	call S9xGetByte	movb %al, %ah	movb OpenBus, %al	movb $0x01, %dh	movw %dx, SS.endm#endif
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