.include /mit/6.004/bsim/beta.uasm
.include /mit/6.004/bsim/lab5checkoff.uasm

count_bull_cows:
	PUSH(LP)
	PUSH(BP)
	MOVE(SP, BP)

|.breakpoint

	LD(BP, -12, R0)
	LD(BP, -16, R1)	

	
|	PUSH(R0) | a
	PUSH(R1) | b
	PUSH(R2) | bulls
	PUSH(R3) | cows
	PUSH(R4) | i
	PUSH(R5) | j
	PUSH(R6) | mask
	PUSH(R7) | tmp
	PUSH(R8) | tmp
	PUSH(R9) | tmp
	PUSH(R10) | atry
	PUSH(R11) | btemp;
	PUSH(R12) | btry;
			
	CMOVE(0, R2)
	CMOVE(0, R3)
|.breakpoint	
	CMOVE(0xF, R6)
	CMOVE(0,R4)
	
	bullsloop:
	AND(R6, R0, R7)
	AND(R6, R1, R8)
	CMPEQ(R7, R8, R9)
	BEQ(R9, nobull)
	ADDC(R2, 1, R2)
	OR(R0, R6, R0)
	OR(R1, R6, R1)
	nobull:
	SHLC(R6, 4, R6)
	ADDC(R4, 1, R4)
	CMPLTC(R4, 4, R9)
	BNE(R9, bullsloop)
|.breakpoint
	
	CMOVE(0, R4)
	cowsloop:
	ANDC(R0, 0xF, R10)
	SHRC(R0, 4, R0)
	CMPEQC(R10, 0xF, R9)
	BNE(R9, bull)
	MOVE(R1, R11)
	CMOVE(0xF, R6)
	CMOVE(0, R5)
	jloop:
	ANDC(R11, 0xF, R12)
	SHRC(R11, 4, R11)
	CMPEQ(R10, R12, R9)
	BEQ(R9, nocow)
	ADDC(R3, 1, R3)
	OR(R1, R6, R1)
	BEQ(R31, endjloop)
	nocow:
	SHLC(R6, 4, R6)
	ADDC(R5, 1, R5)
	CMPLTC(R5, 4, R9)
	BNE(R9, jloop)
	endjloop:
	bull:
	ADDC(R4, 1, R4)
	CMPLTC(R4, 4, R9)
	BNE(R9, cowsloop)
|.breakpoint	
		
	
	SHLC(R2, 4, R0)
	ADD(R3, R0, R0)
	
	POP(R12)
	POP(R11)
	POP(R10)
	POP(R9)
	POP(R8)
	POP(R7)
	POP(R6)
	POP(R5)
	POP(R4)
	POP(R3)
	POP(R2)
	POP(R1)
	
	MOVE(BP,SP)
	POP(BP)
	POP(LP)
	RTN()
	
	
StackBase: LONG(.+4)
	. = .+0x1000