--- /dev/null
+##################################################################
+# TITLE: Opcode Tester
+# AUTHOR: Steve Rhoads (rhoadss@yahoo.com)
+# DATE CREATED: 1/10/02
+# FILENAME: opcodes.asm
+# PROJECT: Plasma CPU core
+# COPYRIGHT: Software placed into the public domain by the author.
+# Software 'as is' without warranty. Author liable for nothing.
+# DESCRIPTION:
+# This assembly file tests all of the opcodes supported by the
+# Plasma core.
+# This test assumes that address 0x20000000 is the UART write register
+# Successful tests will print out "A" or "AB" or "ABC" or ....
+# Missing letters or letters out of order indicate a failure.
+##################################################################
+ .text
+ .align 2
+ .globl entry
+ .ent entry
+entry:
+ .set noreorder
+
+ la $gp, _gp #initialize stack pointer
+ la $4, __bss_start #$4 = .sbss_start
+ la $5, _end #$5 = .bss_end
+ nop #no stack needed
+ nop
+
+ b StartTest
+ nop #nops required to place ISR at 0x3c
+ nop
+
+OS_AsmPatchValue:
+ #Code to place at address 0x3c
+ lui $26, 0x1000
+ ori $26, $26, 0x3c
+ jr $26
+ nop
+
+InterruptVector: #Address=0x3c
+ mfc0 $26,$14 #C0_EPC=14 (Exception PC)
+ jr $26
+ add $4,$4,5
+
+StartTest:
+ mtc0 $0,$12 #disable interrupts
+ lui $20,0x2000 #serial port write address
+ ori $21,$0,'\n' #<CR> letter
+ ori $22,$0,'X' #'X' letter
+ ori $23,$0,'\r'
+ ori $24,$0,0x0f80 #temp memory
+
+ sb $23,0($20)
+ sb $21,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #Patch interrupt vector to 0x1000003c
+ la $5, OS_AsmPatchValue
+ sub $6,$5,0x1000
+ blez $6,NoPatch
+
+ lw $6, 0($5)
+ sw $6, 0x3c($0)
+ lw $6, 4($5)
+ sw $6, 0x40($0)
+ lw $6, 8($5)
+ sw $6, 0x44($0)
+ lw $6, 12($5)
+ sw $6, 0x48($0)
+NoPatch:
+
+ ######################################
+ #Arithmetic Instructions
+ ######################################
+ArthmeticTest:
+ ori $2,$0,'A'
+ sb $2,0($20)
+ ori $2,$0,'r'
+ sb $2,0($20)
+ ori $2,$0,'i'
+ sb $2,0($20)
+ ori $2,$0,'t'
+ sb $2,0($20)
+ ori $2,$0,'h'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: ADD
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $3,$0,5
+ ori $4,$0,60
+ add $2,$3,$4
+ sb $2,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: ADDI
+ ori $2,$0,'b'
+ sb $2,0($20)
+ ori $4,$0,60
+ addi $2,$4,5
+ sb $2,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: ADDIU
+ ori $2,$0,'c'
+ sb $2,0($20)
+ ori $4,$0,50
+ addiu $5,$4,15
+ sb $5,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: ADDU
+ ori $2,$0,'d'
+ sb $2,0($20)
+ ori $3,$0,5
+ ori $4,$0,60
+ add $2,$3,$4
+ sb $2,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #e: DIV
+ ori $2,$0,'e'
+ sb $2,0($20)
+ ori $2,$0,65*117+41
+ ori $3,$0,117
+ div $2,$3
+ nop
+ mflo $4
+ sb $4,0($20) #A
+ mfhi $4
+ addi $4,$4,66-41
+ sb $4,0($20) #B
+ li $2,-67*19
+ ori $3,$0,19
+ div $2,$3
+ nop
+ mflo $4
+ sub $4,$0,$4
+ sb $4,0($20) #C
+ ori $2,$0,68*23
+ li $3,-23
+ div $2,$3
+ nop
+ mflo $4
+ sub $4,$0,$4
+ sb $4,0($20) #D
+ li $2,-69*13
+ li $3,-13
+ div $2,$3
+ mflo $4
+ sb $4,0($20) #E
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #f: DIVU
+ ori $2,$0,'f'
+ sb $2,0($20)
+ ori $2,$0,65*13
+ ori $3,$0,13
+ divu $2,$3
+ nop
+ mflo $4
+ sb $4,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #g: MULT
+ ori $2,$0,'g'
+ sb $2,0($20)
+ ori $2,$0,5
+ ori $3,$0,13
+ mult $2,$3
+ nop
+ mflo $4
+ sb $4,0($20) #A
+ li $2,-5
+ ori $3,$0,13
+ mult $2,$3
+ mfhi $5
+ mflo $4
+ sub $4,$0,$4
+ addu $4,$4,$5
+ addi $4,$4,2
+ sb $4,0($20) #B
+ ori $2,$0,5
+ li $3,-13
+ mult $2,$3
+ mfhi $5
+ mflo $4
+ sub $4,$0,$4
+ addu $4,$4,$5
+ addi $4,$4,3
+ sb $4,0($20) #C
+ li $2,-5
+ li $3,-13
+ mult $2,$3
+ mfhi $5
+ mflo $4
+ addu $4,$4,$5
+ addi $4,$4,3
+ sb $4,0($20) #D
+ lui $4,0xfe98
+ ori $4,$4,0x62e5
+ lui $5,0x6
+ ori $5,0x8db8
+ mult $4,$5
+ mfhi $6
+ addiu $7,$6,2356+1+'E' #E
+ sb $7,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #h: MULTU
+ ori $2,$0,'h'
+ sb $2,0($20)
+ ori $2,$0,5
+ ori $3,$0,13
+ multu $2,$3
+ nop
+ mflo $4
+ sb $4,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #i: SLT
+ ori $2,$0,'i'
+ sb $2,0($20)
+ ori $2,$0,10
+ ori $3,$0,12
+ slt $4,$2,$3
+ addi $5,$4,64
+ sb $5,0($20) #A
+ slt $4,$3,$2
+ addi $5,$4,66
+ sb $5,0($20) #B
+ li $2,0xfffffff0
+ slt $4,$2,$3
+ addi $5,$4,66
+ sb $5,0($20) #C
+ slt $4,$3,$2
+ addi $5,$4,68
+ sb $5,0($20) #D
+ li $3,0xffffffff
+ slt $4,$2,$3
+ addi $5,$4,68
+ sb $5,0($20) #E
+ slt $4,$3,$2
+ addi $5,$4,70
+ sb $5,0($20) #F
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #j: SLTI
+ ori $2,$0,'j'
+ sb $2,0($20)
+ ori $2,$0,10
+ slti $4,$2,12
+ addi $5,$4,64
+ sb $5,0($20) #A
+ slti $4,$2,8
+ addi $5,$4,66
+ sb $5,0($20) #B
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #k: SLTIU
+ ori $2,$0,'k'
+ sb $2,0($20)
+ ori $2,$0,10
+ sltiu $4,$2,12
+ addi $5,$4,64
+ sb $5,0($20) #A
+ sltiu $4,$2,8
+ addi $5,$4,66
+ sb $5,0($20) #B
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #l: SLTU
+ ori $2,$0,'l'
+ sb $2,0($20)
+ ori $2,$0,10
+ ori $3,$0,12
+ slt $4,$2,$3
+ addi $5,$4,64
+ sb $5,0($20) #A
+ slt $4,$3,$2
+ addi $5,$4,66
+ sb $5,0($20) #B
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #m: SUB
+ ori $2,$0,'m'
+ sb $2,0($20)
+ ori $3,$0,70
+ ori $4,$0,5
+ sub $2,$3,$4
+ sb $2,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #n: SUBU
+ ori $2,$0,'n'
+ sb $2,0($20)
+ ori $3,$0,70
+ ori $4,$0,5
+ sub $2,$3,$4
+ sb $2,0($20) #A
+ sb $23,0($20)
+ sb $21,0($20)
+
+ ######################################
+ #Branch and Jump Instructions
+ ######################################
+BranchTest:
+ ori $2,$0,'B'
+ sb $2,0($20)
+ ori $2,$0,'r'
+ sb $2,0($20)
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $2,$0,'n'
+ sb $2,0($20)
+ ori $2,$0,'c'
+ sb $2,0($20)
+ ori $2,$0,'h'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: B
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ b $B1
+ sb $10,0($20)
+ sb $22,0($20)
+$B1:
+ sb $11,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: BAL
+ ori $2,$0,'b'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $15,$0,'X'
+ bal $BAL1
+ sb $10,0($20)
+ sb $13,0($20)
+ b $BAL2
+ sb $14,0($20)
+ sb $15,0($20)
+$BAL1:
+ sb $11,0($20)
+ jr $31
+ sb $12,0($20)
+ sb $22,0($20)
+$BAL2:
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: BEQ
+ ori $2,$0,'c'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $2,$0,100
+ ori $3,$0,123
+ ori $4,$0,123
+ beq $2,$3,$BEQ1
+ sb $10,0($20)
+ sb $11,0($20)
+ beq $3,$4,$BEQ1
+ sb $12,0($20)
+ sb $22,0($20)
+$BEQ1:
+ sb $13,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: BGEZ
+ ori $2,$0,'d'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ or $15,$0,'X'
+ ori $2,$0,100
+ li $3,0xffff1234
+ ori $4,$0,123
+ bgez $3,$BGEZ1
+ sb $10,0($20)
+ sb $11,0($20)
+ bgez $2,$BGEZ1
+ sb $12,0($20)
+ sb $22,0($20)
+$BGEZ1:
+ bgez $0,$BGEZ2
+ nop
+ sb $15,0($20)
+$BGEZ2:
+ sb $13,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #e: BGEZAL
+ ori $2,$0,'e'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $15,$0,'X'
+ li $3,0xffff1234
+ bgezal $3,$BGEZAL1
+ nop
+ sb $10,0($20)
+ bgezal $0,$BGEZAL1
+ nop
+ sb $13,0($20)
+ b $BGEZAL2
+ sb $14,0($20)
+ sb $15,0($20)
+$BGEZAL1:
+ sb $11,0($20)
+ jr $31
+ sb $12,0($20)
+ sb $22,0($20)
+$BGEZAL2:
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #f: BGTZ
+ ori $2,$0,'f'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $2,$0,100
+ li $3,0xffff1234
+ bgtz $3,$BGTZ1
+ sb $10,0($20)
+ sb $11,0($20)
+ bgtz $2,$BGTZ1
+ sb $12,0($20)
+ sb $22,0($20)
+$BGTZ1:
+ sb $13,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #g: BLEZ
+ ori $2,$0,'g'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $2,$0,100
+ li $3,0xffff1234
+ blez $2,$BLEZ1
+ sb $10,0($20)
+ sb $11,0($20)
+ blez $3,$BLEZ1
+ sb $12,0($20)
+ sb $22,0($20)
+$BLEZ1:
+ blez $0,$BLEZ2
+ nop
+ sb $22,0($20)
+$BLEZ2:
+ sb $13,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #h: BLTZ
+ ori $2,$0,'h'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $2,$0,100
+ li $3,0xffff1234
+ ori $4,$0,0
+ bltz $2,$BLTZ1
+ sb $10,0($20)
+ sb $11,0($20)
+ bltz $3,$BLTZ1
+ sb $12,0($20)
+ sb $22,0($20)
+$BLTZ1:
+ bltz $4,$BLTZ2
+ nop
+ sb $13,0($20)
+$BLTZ2:
+ sb $14,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #i: BLTZAL
+ ori $2,$0,'i'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $15,$0,'X'
+ li $3,0xffff1234
+ bltzal $0,$BLTZAL1
+ nop
+ sb $10,0($20)
+ bltzal $3,$BLTZAL1
+ nop
+ sb $13,0($20)
+ b $BLTZAL2
+ sb $14,0($20)
+ sb $15,0($20)
+$BLTZAL1:
+ sb $11,0($20)
+ jr $31
+ sb $12,0($20)
+ sb $22,0($20)
+$BLTZAL2:
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #j: BNE
+ ori $2,$0,'j'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $2,$0,100
+ ori $3,$0,123
+ ori $4,$0,123
+ bne $3,$4,$BNE1
+ sb $10,0($20)
+ sb $11,0($20)
+ bne $2,$3,$BNE1
+ sb $12,0($20)
+ sb $22,0($20)
+$BNE1:
+ sb $13,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #k: J
+ ori $2,$0,'k'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $15,$0,'X'
+ j $J1
+ sb $10,0($20)
+ sb $15,0($20)
+$J1:
+ sb $11,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #l: JAL
+ ori $2,$0,'l'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $15,$0,'X'
+ jal $JAL1
+ sb $10,0($20)
+ sb $13,0($20)
+ b $JAL2
+ sb $14,0($20)
+ sb $15,0($20)
+$JAL1:
+ sb $11,0($20)
+ jr $31
+ sb $12,0($20)
+ sb $22,0($20)
+$JAL2:
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #m: JALR
+ ori $2,$0,'m'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $12,$0,'C'
+ ori $13,$0,'D'
+ ori $14,$0,'E'
+ ori $15,$0,'X'
+ la $3,$JALR1
+ jalr $3
+ sb $10,0($20)
+ sb $13,0($20)
+ b $JALR2
+ sb $14,0($20)
+ sb $15,0($20)
+$JALR1:
+ sb $11,0($20)
+ jr $31
+ sb $12,0($20)
+ sb $22,0($20)
+$JALR2:
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #n: JR
+ ori $2,$0,'n'
+ sb $2,0($20)
+ ori $10,$0,'A'
+ ori $11,$0,'B'
+ ori $15,$0,'X'
+ la $3,$JR1
+ jr $3
+ sb $10,0($20)
+ sb $15,0($20)
+$JR1:
+ sb $11,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #o: NOP
+ ori $2,$0,'o'
+ sb $2,0($20)
+ ori $2,$0,65
+ nop
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+# b LoadTest
+
+BreakTest:
+ #p: BREAK
+ ori $2,$0,'p'
+ sb $2,0($20)
+ ori $2,$0,'z'
+ ori $4,$0,59
+ break 0
+ addi $4,$4,1
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #q: SYSCALL
+ ori $2,$0,'q'
+ sb $2,0($20)
+ ori $4,$0,61
+ syscall 0
+ addi $4,$4,-1
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+ ######################################
+ #Load, Store, and Memory Control Instructions
+ ######################################
+LoadTest:
+ ori $2,$0,'L'
+ sb $2,0($20)
+ ori $2,$0,'o'
+ sb $2,0($20)
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $2,$0,'d'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: LB
+ ori $2,$0,'a'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x414243fc
+ sw $3,16($2)
+ lb $4,16($2)
+ sb $4,0($20)
+ lb $4,17($2)
+ sb $4,0($20)
+ lb $4,18($2)
+ sb $4,0($20)
+ lb $2,19($2)
+ sra $3,$2,8
+ addi $3,$3,0x45
+ sb $3,0($20)
+ addi $2,$2,0x49
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: LBU
+ ori $2,$0,'b'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x41424344
+ sw $3,16($2)
+ lb $4,16($2)
+ sb $4,0($20)
+ lb $4,17($2)
+ sb $4,0($20)
+ lb $4,18($2)
+ sb $4,0($20)
+ lb $2,19($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: LH
+ ori $2,$0,'c'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x00410042
+ sw $3,16($2)
+ lh $4,16($2)
+ sb $4,0($20)
+ lh $2,18($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: LHU
+ ori $2,$0,'d'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x00410042
+ sw $3,16($2)
+ lh $4,16($2)
+ sb $4,0($20)
+ lh $2,18($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #e: LW
+ ori $2,$0,'e'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,'A'
+ sw $3,16($2)
+ ori $3,$0,0
+ lw $2,16($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #f: LWL & LWR
+ ori $2,$0,'f'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,'A'
+ sw $3,16($2)
+ ori $3,$0,0
+ lwl $2,16($2)
+ lwr $2,16($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #g: SB
+ ori $2,$0,'g'
+ sb $2,0($20)
+ ori $2,$0,'A'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #h: SH
+ ori $2,$0,'h'
+ sb $2,0($20)
+ or $4,$0,$24
+ ori $2,$0,0x4142
+ sh $2,16($4)
+ lb $3,16($4)
+ sb $3,0($20)
+ lb $2,17($4)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #i: SW
+ ori $2,$0,'i'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x41424344
+ sw $3,16($2)
+ lb $4,16($2)
+ sb $4,0($20)
+ lb $4,17($2)
+ sb $4,0($20)
+ lb $4,18($2)
+ sb $4,0($20)
+ lb $2,19($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #j: SWL & SWR
+ ori $2,$0,'j'
+ sb $2,0($20)
+ or $2,$0,$24
+ li $3,0x41424344
+ swl $3,16($2)
+ swr $3,16($2)
+ lb $4,16($2)
+ sb $4,0($20)
+ lb $4,17($2)
+ sb $4,0($20)
+ lb $4,18($2)
+ sb $4,0($20)
+ lb $2,19($2)
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+ ######################################
+ #Logical Instructions
+ ######################################
+LogicalTest:
+ ori $2,$0,'L'
+ sb $2,0($20)
+ ori $2,$0,'o'
+ sb $2,0($20)
+ ori $2,$0,'g'
+ sb $2,0($20)
+ ori $2,$0,'i'
+ sb $2,0($20)
+ ori $2,$0,'c'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: AND
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $2,$0,0x0741
+ ori $3,$0,0x60f3
+ and $4,$2,$3
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: ANDI
+ ori $2,$0,'b'
+ sb $2,0($20)
+ ori $2,$0,0x0741
+ andi $4,$2,0x60f3
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: LUI
+ ori $2,$0,'c'
+ sb $2,0($20)
+ lui $2,0x41
+ srl $3,$2,16
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: NOR
+ ori $2,$0,'d'
+ sb $2,0($20)
+ li $2,0xf0fff08e
+ li $3,0x0f0f0f30
+ nor $4,$2,$3
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #e: OR
+ ori $2,$0,'e'
+ sb $2,0($20)
+ ori $2,$0,0x40
+ ori $3,$0,0x01
+ or $4,$2,$3
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #f: ORI
+ ori $2,$0,'f'
+ sb $2,0($20)
+ ori $2,$0,0x40
+ ori $4,$2,0x01
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #g: XOR
+ ori $2,$0,'g'
+ sb $2,0($20)
+ ori $2,$0,0xf043
+ ori $3,$0,0xf002
+ xor $4,$2,$3
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #h: XORI
+ ori $2,$0,'h'
+ sb $2,0($20)
+ ori $2,$0,0xf043
+ xor $4,$2,0xf002
+ sb $4,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+ ######################################
+ #Move Instructions
+ ######################################
+MoveTest:
+ ori $2,$0,'M'
+ sb $2,0($20)
+ ori $2,$0,'o'
+ sb $2,0($20)
+ ori $2,$0,'v'
+ sb $2,0($20)
+ ori $2,$0,'e'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: MFHI
+ ori $2,$0,'a'
+ sb $2,0($20)
+ ori $2,$0,65
+ mthi $2
+ mfhi $3
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: MFLO
+ ori $2,$0,'b'
+ sb $2,0($20)
+ ori $2,$0,65
+ mtlo $2
+ mflo $3
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: MTHI
+ ori $2,$0,'c'
+ sb $2,0($20)
+ ori $2,$0,65
+ mthi $2
+ mfhi $3
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: MTLO
+ ori $2,$0,'d'
+ sb $2,0($20)
+ ori $2,$0,65
+ mtlo $2
+ mflo $3
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+ ######################################
+ #Shift Instructions
+ ######################################
+ShiftTest:
+ ori $2,$0,'S'
+ sb $2,0($20)
+ ori $2,$0,'h'
+ sb $2,0($20)
+ ori $2,$0,'i'
+ sb $2,0($20)
+ ori $2,$0,'f'
+ sb $2,0($20)
+ ori $2,$0,'t'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #a: SLL
+ ori $2,$0,'a'
+ sb $2,0($20)
+ li $2,0x40414243
+ sll $3,$2,8
+ srl $3,$3,24
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #b: SLLV
+ ori $2,$0,'b'
+ sb $2,0($20)
+ li $2,0x40414243
+ ori $3,$0,8
+ sllv $3,$2,$3
+ srl $3,$3,24
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #c: SRA
+ ori $2,$0,'c'
+ sb $2,0($20)
+ li $2,0x40414243
+ sra $3,$2,16
+ sb $3,0($20)
+ li $2,0x84000000
+ sra $3,$2,25
+ sub $3,$3,0x80
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #d: SRAV
+ ori $2,$0,'d'
+ sb $2,0($20)
+ li $2,0x40414243
+ ori $3,$0,16
+ srav $3,$2,$3
+ sb $3,0($20)
+ ori $3,$0,25
+ li $2,0x84000000
+ srav $3,$2,$3
+ sub $3,$3,0x80
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #e: SRL
+ ori $2,$0,'e'
+ sb $2,0($20)
+ li $2,0x40414243
+ srl $3,$2,16
+ sb $3,0($20)
+ li $2,0x84000000
+ srl $3,$2,25
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+ #f: SRLV
+ ori $2,$0,'f'
+ sb $2,0($20)
+ li $2,0x40414243
+ ori $3,$0,16
+ srlv $4,$2,$3
+ sb $4,0($20)
+ ori $3,$0,25
+ li $2,0x84000000
+ srlv $3,$2,$3
+ sb $3,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+ ori $2,$0,'D'
+ sb $2,0($20)
+ ori $2,$0,'o'
+ sb $2,0($20)
+ ori $2,$0,'n'
+ sb $2,0($20)
+ ori $2,$0,'e'
+ sb $2,0($20)
+ sb $23,0($20)
+ sb $21,0($20)
+
+
+$DONE:
+ j $DONE
+ nop
+
+ .set reorder
+ .end entry
+
--- /dev/null
+/*-------------------------------------------------------------------\r
+-- TITLE: Plasma CPU test code\r
+-- AUTHOR: Steve Rhoads (rhoadss@yahoo.com)\r
+-- DATE CREATED: 4/21/01\r
+-- FILENAME: test.c\r
+-- PROJECT: Plasma CPU core\r
+-- COPYRIGHT: Software placed into the public domain by the author.\r
+-- Software 'as is' without warranty. Author liable for nothing.\r
+-- DESCRIPTION:\r
+-- The executable image of this file is used as input to the VHDL.\r
+--\r
+-- This file must not contain any global or static data since\r
+-- there isn't a loader to relocate the .data segment and since\r
+-- having static data causes the opcodes to begin at a different\r
+-- location in the resulting executable file.\r
+--\r
+-- Save the opcodes in "code.txt".\r
+--\r
+-- Testing subversion.\r
+--------------------------------------------------------------------*/\r
+#ifndef WIN32\r
+#undef putchar\r
+#define putchar(C) *(volatile unsigned char*)0x20000000=(unsigned char)(C)\r
+#endif\r
+\r
+void print_hex(unsigned long num);\r
+\r
+char text[]="Testing the Plasma core.\n";\r
+char buf[20];\r
+int xyz=0xbadbeef;\r
+int abc;\r
+\r
+char *strcpy2(char *s, const char *t)\r
+{\r
+ char *tmp=s;\r
+ while((int)(*s++=*t++)) ;\r
+ return(tmp);\r
+}\r
+\r
+static void itoa2(long n, char *s, int base, long *digits)\r
+{\r
+ long i,j,sign;\r
+ unsigned long n2;\r
+ char number[20];\r
+ for(i=0;i<15;++i) {\r
+ number[i]=' ';\r
+ }\r
+ number[15]=0;\r
+ if(n>=0||base!=10) {\r
+ sign=1;\r
+ } else {\r
+ sign=-1;\r
+ }\r
+ n2=n*sign;\r
+ for(j=14;j>=0;--j) {\r
+ i=n2%base;\r
+ n2/=base;\r
+ number[j]=i<10?'0'+i:'a'+i-10;\r
+ if(n2==0&&15-j>=*digits) break;\r
+ } \r
+ if(sign==-1) {\r
+ number[--j]='-';\r
+ }\r
+ if(*digits==0||*digits<15-j) {\r
+ strcpy2(s,&number[j]);\r
+ *digits=15-j;\r
+ } else {\r
+ strcpy2(s,&number[15-*digits]);\r
+ }\r
+}\r
+\r
+void print(long num,long base,long digits)\r
+{\r
+ char *ptr,buffer[128];\r
+ itoa2(num,buffer,base,&digits);\r
+ ptr=buffer;\r
+ while(*ptr) {\r
+ putchar(*ptr++); /* Put the character out */\r
+ if(ptr[-1]=='\n') *--ptr='\r';\r
+ }\r
+} \r
+\r
+void print_string(char *p)\r
+{\r
+ int i;\r
+ for(i=0;p[i];++i) {\r
+ putchar(p[i]);\r
+ }\r
+}\r
+\r
+int prime()\r
+{\r
+ int i,j;\r
+ //show all prime numbers less than 1000\r
+ for(i=3;i<1000;i+=2) {\r
+ for(j=3;j<i;j+=2) {\r
+ if(i%j==0) {\r
+ j=0;\r
+ break;\r
+ }\r
+ }\r
+ if(j) {\r
+ print(i,10,0);\r
+ putchar(' ');\r
+ }\r
+ }\r
+ putchar('\n');\r
+ return 0;\r
+}\r
+\r
+int main(void)\r
+{\r
+ long i,j;\r
+ char char_buf[16];\r
+ short short_buf[16];\r
+ long long_buf[16];\r
+\r
+#if 1 \r
+ //test shift\r
+ j=0x12345678;\r
+ for(i=0;i<32;++i) {\r
+ print_hex(j>>i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ j=0x92345678;\r
+ for(i=0;i<32;++i) {\r
+ print_hex(j>>i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ j=0x12345678;\r
+ for(i=0;i<32;++i) {\r
+ print_hex(j<<i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ putchar('\n');\r
+#endif\r
+ \r
+#if 1 \r
+ //test multiply and divide\r
+ j=7;\r
+ for(i=0;i<=10;++i) {\r
+ print(j*i,10,0);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ j=0x321;\r
+ for(i=0;i<=5;++i) {\r
+ print_hex(j*(i+0x12345));\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ j=0x54321;\r
+ for(i=0;i<=5;++i) {\r
+ print_hex(j*(i+0x123));\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ j=0x12345;\r
+ for(i=1;i<10;++i) {\r
+ print_hex(j/i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ for(i=1;i<10;++i) {\r
+ print_hex(j%i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ putchar('\n');\r
+#endif\r
+\r
+#if 1\r
+ //test addition and subtraction\r
+ j=0x1234;\r
+ for(i=0;i<10;++i) {\r
+ print_hex(j+i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ for(i=0;i<10;++i) {\r
+ print_hex(j-i);\r
+ putchar(' ');\r
+ }\r
+ putchar('\n');\r
+ putchar('\n');\r
+#endif\r
+ \r
+#if 1 \r
+ //test bit operations\r
+ i=0x1234;\r
+ j=0x4321;\r
+ print_hex(i&j);\r
+ putchar(' ');\r
+ print_hex(i|j);\r
+ putchar(' ');\r
+ print_hex(i^j);\r
+ putchar(' ');\r
+ print_hex(~i);\r
+ putchar(' ');\r
+ print_hex(i+0x12);\r
+ putchar(' ');\r
+ print_hex(i-0x12);\r
+ putchar('\n');\r
+ putchar('\n');\r
+#endif\r
+ \r
+#if 1 \r
+ //test memory access\r
+ for(i=0;i<10;++i) {\r
+ char_buf[i]=i;\r
+ short_buf[i]=i;\r
+ long_buf[i]=i;\r
+ }\r
+ for(i=0;i<10;++i) {\r
+ j=char_buf[i];\r
+ print(j,10,0);\r
+ putchar(' ');\r
+ j=short_buf[i];\r
+ print(j,10,0);\r
+ putchar(' ');\r
+ j=long_buf[i];\r
+ print(j,10,0);\r
+ putchar('\n');\r
+ }\r
+ putchar('\n');\r
+#endif\r
+ \r
+ prime();\r
+ \r
+ putchar('d'); putchar('o'); putchar('n'); putchar('e'); putchar('\n');\r
+\r
+ for(;;) ;\r
+}\r
+\r
projects / fpga / virtex2 / plasma.git / commitdiff