📄 sa1ops.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.*******************************************************************************/.macro Adc8 K	testb $Decimal, FLAGS	jnz .ADC8Decimal\K	GetCarry	adcb AL, %al	SetZNCV	movb %al, AL	jmp S9xSA1MainAsmLoop.ADC8Decimal\K:	GetCarry	adcb AL, %al	daa	movb %al, AL	SetZNCV	jmp S9xSA1MainAsmLoop.endm.macro Adc16 K	testb $Decimal, FLAGS	jnz .ADC16Decimal\K	GetCarry	adcw AA, %ax	movw %ax, AA	setc SA1_Carry	seto SA1_Overflow	setnz SA1_Zero	movb %ah, SA1_Negative	jmp S9xSA1MainAsmLoop.ADC16Decimal\K:	GetCarry	adcb AL, %al	daa	movb %al, AL	movb %ah, %al	adcb AH, %al	daa	movb %al, AH	setc SA1_Carry	seto SA1_Overflow	movw AA, %ax	movb %ah, SA1_Negative	orb %ah, %al	movb %al, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Sbc8 K	testb $Decimal, FLAGS	jnz .SBC8Decimal\K	GetNotCarry	sbbb %al, AL	movb AL, %al	setnc SA1_Carry	SetZNV	jmp S9xSA1MainAsmLoop.SBC8Decimal\K:	GetNotCarry	movb %al, %dl	movb AL, %al	sbbb %dl, %al	das	movb %al, AL	setnc SA1_Carry	SetZNV	jmp S9xSA1MainAsmLoop.endm.macro Sbc16 K	testb $Decimal, FLAGS	jnz .SBC16Decimal\K	GetNotCarry	sbbw %ax, AA	setnc SA1_Carry	setnz SA1_Zero	seto SA1_Overflow	movb AH, %al	movb %al, SA1_Negative	jmp S9xSA1MainAsmLoop.SBC16Decimal\K:	movl %eax, %edx	movw AA, %ax	GetNotCarry	sbbb %dl, %al	das	movb %al, AL	movb %ah, %al	sbbb %dh, %al	das	movb %al, AH	setnc SA1_Carry	seto SA1_Overflow	movw AA, %ax	movb %ah, SA1_Negative	orb %ah, %al	movb %al, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Ora8 K	orb AL, %al	movb %al, AL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro Ora16 K	orw AA, %ax	movw %ax, AA	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro Eor8 K	xorb AL, %al	movb %al, AL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro Eor16 K	xorw AA, %ax	movw %ax, AA	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro And8 K	andb AL, %al	movb %al, AL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro And16 K	andw AA, %ax	movw %ax, AA	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro Lda8 K	movb %al, AL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro Lda16 K	movw %ax, AA	testw %ax, %ax	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro Ldx8 K	movb %al, XL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro Ldx16 K	movw %ax, XX	testw %ax, %ax	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro Ldy8 K	movb %al, YL	SetZN	jmp S9xSA1MainAsmLoop.endm.macro Ldy16 K	movw %ax, YY	testw %ax, %ax	Set16ZN	jmp S9xSA1MainAsmLoop.endm.macro Cmp8 K	movb AL, %ah	subb %al, %ah	setnc SA1_Carry	movb %ah, SA1_Negative	movb %ah, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Cmp16 K	movw AA, %dx	subw %ax, %dx	setnc SA1_Carry	setnz SA1_Zero	movb %dh, SA1_Negative	jmp S9xSA1MainAsmLoop.endm.macro Cpx8 K	movb XL, %ah	subb %al, %ah	setnc SA1_Carry	movb %ah, SA1_Negative	movb %ah, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Cpx16 K	movw XX, %dx	subw %ax, %dx	setnc SA1_Carry	setnz SA1_Zero	movb %dh, SA1_Negative	jmp S9xSA1MainAsmLoop.endm.macro Cpy8 K	movb YL, %ah	subb %al, %ah	setnc SA1_Carry	movb %ah, SA1_Negative	movb %ah, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Cpy16 K	movw YY, %dx	subw %ax, %dx	setnc SA1_Carry	setnz SA1_Zero	movb %dh, SA1_Negative	jmp S9xSA1MainAsmLoop.endm.macro Asl8 K	pushl %edx	call S9xSA1GetByte	salb %al	SetZNC	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Asl16 K	pushl %edx	call S9xSA1GetWord	salw %ax	Set16ZNC	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Lsr8 K	pushl %edx	call S9xSA1GetByte	shrb %al	SetZNC	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Lsr16 K	pushl %edx	call S9xSA1GetWord	shrw %ax	Set16ZNC	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Rol8 K	pushl %edx	call S9xSA1GetByte	GetCarry	rclb %al	SetZNC	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Rol16 K	pushl %edx	call S9xSA1GetWord	GetCarry	rclw %ax	setc SA1_Carry	movb %ah, SA1_Negative	testw %ax, %ax	setnz SA1_Zero	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Ror8 K	pushl %edx	call S9xSA1GetByte	GetCarry	rcrb %al	SetZNC	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Ror16 K	pushl %edx	call S9xSA1GetWord	GetCarry	rcrw %ax	setc SA1_Carry	movb %ah, SA1_Negative	testw %ax, %ax	setnz SA1_Zero	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Bit8 K	call S9xSA1GetByte	movb %al, SA1_Negative	testb $0x40, %al	setnz SA1_Overflow	andb AL, %al	movb %al, SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Bit16 K	call S9xSA1GetWord	movb %ah, SA1_Negative	testb $0x40, %ah	setnz SA1_Overflow	andw AA, %ax	setnz SA1_Zero	jmp S9xSA1MainAsmLoop.endm.macro Dec8 K	pushl %edx	call S9xSA1GetByte	decb %al	SetZN	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Dec16 K	pushl %edx	call S9xSA1GetWord	decw %ax	Set16ZN	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Inc8 K	pushl %edx	call S9xSA1GetByte	incb %al	SetZN	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Inc16 K	pushl %edx	call S9xSA1GetWord	incw %ax	Set16ZN	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Sta8 K	movb AL, %al	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Sta16 K	movw AA, %ax	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Stx8 K	movb XL, %al	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Stx16 K	movw XX, %ax	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Sty8 K	movb YL, %al	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Sty16 K	movw YY, %ax	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Stz8 K	xorb %al, %al	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Stz16 K	xorl %eax, %eax	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Trb8 K	pushl %edx	call S9xSA1GetByte	movb AL, %dl	testb %al, %dl	setnz SA1_Zero	xorb $0xff, %dl	andb %dl, %al	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Trb16 K	pushl %edx	call S9xSA1GetWord	movw AA, %dx	testw %ax, %dx	setnz SA1_Zero	xorl $0xffffffff, %edx	andl %edx, %eax	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro Tsb8 K	pushl %edx	call S9xSA1GetByte	movb AL, %dl	testb %al, %dl	setnz SA1_Zero	orb %dl, %al	popl %edx	call S9xSA1SetByte	jmp S9xSA1MainAsmLoop.endm.macro Tsb16 K	pushl %edx	call S9xSA1GetWord	movw AA, %dx	testw %ax, %dx	setnz SA1_Zero	orw %dx, %ax	popl %edx	call S9xSA1SetWord	jmp S9xSA1MainAsmLoop.endm.macro CheckForIrq K	testb $0xff, SA1IRQActive	jz .CheckForIrqS9xSA1Exit\K	testb $IRQ, FLAGS	jnz .CheckForIrqS9xSA1Exit\K	call S9xSA1Opcode_IRQ.CheckForIrqS9xSA1Exit\K:.endm.macro S9xSA1FixCycles K	testw $Emulation, FLAGS16	jz .S9xSA1FixCyclesNoEmulation\K	movl $S9xSA1OpcodesM1X1, SA1Opcodes	jmp .S9xSA1FixCyclesS9xSA1Exit\K.S9xSA1FixCyclesNoEmulation\K:		testb $MemoryFlag, FLAGS	jz .S9xSA1FixCyclesNoMemory\K	testb $IndexFlag, FLAGS	jz .S9xSA1FixCyclesNoIndex\K	movl $S9xSA1OpcodesM1X1, SA1Opcodes	jmp .S9xSA1FixCyclesS9xSA1Exit\K.S9xSA1FixCyclesNoIndex\K:	movl $S9xSA1OpcodesM1X0, SA1Opcodes	jmp .S9xSA1FixCyclesS9xSA1Exit\K.S9xSA1FixCyclesNoMemory\K:	testb $IndexFlag, FLAGS	jz .S9xSA1FixCyclesNoIndex2\K	movl $S9xSA1OpcodesM0X1, SA1Opcodes	jmp .S9xSA1FixCyclesS9xSA1Exit\K.S9xSA1FixCyclesNoIndex2\K:	movl $S9xSA1OpcodesM0X0, SA1Opcodes.S9xSA1FixCyclesS9xSA1Exit\K:.endm.macro S9xSA1UnpackStatus K	movb FLAGS, %al	movb %al, SA1_Negative	testb $Zero, %al	setz SA1_Zero	testb $Carry, FLAGS	setnz SA1_Carry	testb $Overflow, FLAGS	setnz SA1_Overflow.endm.macro S9xSA1PackStatus K	movb SA1_Carry, %al	andb $~(Zero | Negative | Carry | Overflow), FLAGS	orb %al, FLAGS	movb SA1_Negative, %al	andb $0x80, %al	orb %al, FLAGS	movb SA1_Overflow, %al	salb $6, %al	orb %al, FLAGS	testb $0xff, SA1_Zero	setz %al	salb %al	orb %al, FLAGS.endm.macro CPUShutdown K//	cmpb $0, Shutdown//	jz .NoShutdown\K	cmpl PC, SA1WaitAddress	jnz .NoShutdown\K	cmpl $1, SA1WaitCounter	jl .NotYet\K	movb $0, SA1Executing	jp .NoShutdown\K.NotYet\K:	incl SA1WaitCounter.NoShutdown\K:.endm
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