初版，Logisim转换Verilog
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Binary file not shown.
@@ -0,0 +1,428 @@
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#############################################################
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#测试jal,jalr指令，
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#############################################################
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.text
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addi s1,zero, 1 #测试jal,jalrr指令
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j jmp_next1 #jal x0,8
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addi s1,zero, 1
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addi s2,zero, 2
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addi s3,zero, 3
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jmp_next1:
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j jmp_next2
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addi s1,zero, 1
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addi s2,zero, 2
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addi s3,zero, 3
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jmp_next2:
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j jmp_next3
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addi s1,zero, 1
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addi s2,zero, 2
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addi s3,zero, 3
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jmp_next3:
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j jmp_next4
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addi s1,zero, 1
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addi s2,zero, 2
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addi s3,zero, 3
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jmp_next4:jal jmp_count
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#移位测试 需要支持超addi,sll,add,ecall,srl,sll,sra,beq,j,ecall revise date:2015/12/16 tiger
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.text
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addi s0,zero,1 #简单移位，循环测试，0号区域显示的是初始值1左移1位重复15次的值，1号区域是累加值
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addi s1,zero,1
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slli s1, s1, 31 #逻辑左移31位 s1=0x80000000
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###################################################################
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# 逻辑左移测试
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# 显示区域依次显示0x80000000 0x20000000 0x08000000 0x02000000 0x00800000 0x00200000 0x00080000 0x00020000 0x00008000 0x00002000 0x00000800 0x00000200 0x00000080 0x00000020 0x00000008 0x00000002 0x00000000
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###################################################################
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LogicalRightShift: #逻辑右移测试，将最高位1逐位向右右移直至结果为零
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srli s1, s1, 2
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beq s1, zero, shift_next1
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j LogicalRightShift
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shift_next1:
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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###################################################################
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# 逻辑右移测试
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# 显示区域依次显示0x00000004 0x00000010 0x00000040 0x00000100 0x00000400 0x00001000 0x00004000 0x00010000 0x00040000 0x00100000 0x00400000 0x01000000 0x04000000 0x10000000 0x40000000 0x00000000
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###################################################################
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addi s1,zero, 1
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LogicalLeftShift: #逻辑左移测试，将最低位1逐位向左移直至结果为零
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slli s1, s1, 2
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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beq s1, zero, ArithRightShift
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j LogicalLeftShift
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###################################################################
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# 算术右移测试
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# 显示区域依次显示0x80000000 0xf0000000 0xff000000 0xfff00000 0xffff0000 0xfffff000 0xffffff00 0xfffffff0 0xffffffff
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###################################################################
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ArithRightShift: #算术右移测试，#算术移位测试，80000000算术右移，依次显示为F0000000,FF000000,FFF00000,FFFF0000直至FFFFFFFF
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addi s1,zero,1
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slli s1, s1, 31 #逻辑左移31位 s1=0x80000000
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 3 #s1=0X80000000-->0XF0000000
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4 #0XF0000000-->0XFF000000
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4 #0XFF000000-->0XFFF00000
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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srai s1, s1, 4
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add a0,zero,s1 #display s1
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addi a7,zero,34 # display hex
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ecall # we are out of here.
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#############################################################
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#走马灯测试,测试addi,andi,sll,srl,sra,or,ori,nor,ecall LED按走马灯方式来回显示数据
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#############################################################
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.text
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addi s0,zero,1
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slli s3, s0, 31 # s3=0x80000000
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srai s3, s3, 31 # s3=0xFFFFFFFF
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add s0,zero,zero # s0=0
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addi s2,zero,12
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addi s6,zero,3 #走马灯计数
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zmd_loop:
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addi s0, s0, 1 #计算下一个走马灯的数据
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andi s0, s0, 15
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#######################################
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addi t0,zero,8
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addi t1,zero,1
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left:
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slli s3, s3, 4 #走马灯左移
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or s3, s3, s0
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add a0,zero,s3 # display s3
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addi a7,zero,34 # system call for LED display
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ecall # display
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sub t0,t0,t1
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bne t0,zero,left
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#######################################
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addi s0, s0, 1 #计算下一个走马灯的数据
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addi t6,zero,15
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and s0, s0, t6
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slli s0, s0, 28
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addi t0,zero,8
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addi t1,zero,1
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zmd_right:
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srli s3, s3, 4 #走马灯右移
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or s3, s3, s0
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add a0,zero,s3 # display s3
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addi a7,zero,34 # system call for LED display
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ecall # display
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sub t0,t0,t1
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bne t0,zero,zmd_right
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srli s0, s0, 28
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#######################################
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sub s6,s6,t1
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beq s6,zero, exit
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j zmd_loop
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exit:
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add t0,zero,zero
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xori t0,t0,-1 #test r xori
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slli t0,t0,8
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ori t0,t0,255
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add a0,zero,t0 # display t0
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addi a7,zero,34 # system call for LED display
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ecall # display
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#################################################################################
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#本程序实现0-15号字单元的降序排序,此程序可在rars 仿真器中运行
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#运行时请将rars Setting中的Memory Configuration设置为Compact，data at address 0
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#################################################################################
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.text
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sort_init:
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addi s0,zero,-1
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addi s1,zero,0
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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sw s0,0(s1)
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addi s0,s0,1
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addi s1,s1,4
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addi s0,s0,1
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|
||||
add s0,zero,zero
|
||||
addi s1,zero,60 #排序区间
|
||||
sort_loop:
|
||||
lw s3,0(s0)
|
||||
lw s4,0(s1)
|
||||
slt t0,s3,s4
|
||||
beq t0,zero,sort_next #降序排序
|
||||
sw s3, 0(s1)
|
||||
sw s4, 0(s0)
|
||||
sort_next:
|
||||
addi s1, s1, -4
|
||||
bne s0, s1, sort_loop
|
||||
|
||||
add a0,zero,s0 #display s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here. DISP: disp r0, 0
|
||||
|
||||
addi s0,s0,4
|
||||
addi s1,zero,60
|
||||
bne s0, s1, sort_loop
|
||||
|
||||
addi a7,zero,10 # benchmark 测试完成，ecall 停止 # 停止后点击继续运行，将进入下方 CCAB 附加指令测试区
|
||||
|
||||
#############################################
|
||||
# insert your ccmb benchmark program here!!!
|
||||
#############################################
|
||||
|
||||
#===== [1] 运算类C：DIVU 无符号除法（divu/mflo）=====
|
||||
#依次输出0x11110000 0x08888000 0x04444000 0x02222000 0x01111000 0x00888800 0x00444400 0x00222200 0x00111100 0x00088880 0x00044440 0x00022220 0x00011110 0x00008888 0x00004444 0x00002222 0x00001111 0x00000888 0x00000444 0x00000222 0x00000111 0x00000088 0x00000044 0x00000022 0x00000011 0x00000008 0x00000004 0x00000002 0x00000001
|
||||
addi t0,zero,2 # /2
|
||||
addi s1,zero, 0x11
|
||||
slli s1,s1,8
|
||||
addi s1,s1,0x11
|
||||
slli s1,s1,16
|
||||
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall
|
||||
addi t3,zero,28 #循环次数
|
||||
|
||||
divu_branch:
|
||||
divu s1,s1,t0 #测试指令
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall #输出当前值
|
||||
addi t3,t3, -1
|
||||
bne t3,zero,divu_branch #循环
|
||||
|
||||
addi a7,zero,10 # 暂停或退出
|
||||
|
||||
#===== [2] 运算类C：REMU 无符号取余 =====
|
||||
#输出 0x87540110
|
||||
addi s1,x0,0x88
|
||||
slli s1,s1,8
|
||||
addi s1,s1,0x48
|
||||
addi s2,x0,0x87
|
||||
slli s2,s2,8
|
||||
addi s2,s2,0x54
|
||||
remu s2,s2,s1
|
||||
slli s2,s2,16
|
||||
ori s2,s2,0x110
|
||||
|
||||
add a0,zero,s2
|
||||
addi a7,zero,34 # system call for print
|
||||
ecall
|
||||
|
||||
addi a7,zero,10 # system call for exit
|
||||
|
||||
#===== [3] 存储类A：SB 存字节 =====
|
||||
#依次输出 0x00000000 0x00000001 0x00000002 0x00000003 0x00000004 0x00000005 0x00000006 0x00000007 0x00000008 0x00000009 0x0000000a 0x0000000b 0x0000000c 0x0000000d 0x0000000e 0x0000000f 0x00000010 0x00000011 0x00000012 0x00000013 0x00000014 0x00000015 0x00000016 0x00000017 0x00000018 0x00000019 0x0000001a 0x0000001b 0x0000001c 0x0000001d 0x0000001e 0x0000001f 0x03020100 0x07060504 0x0b0a0908 0x0f0e0d0c 0x13121110 0x17161514 0x1b1a1918 0x1f1e1d1c
|
||||
addi t1,zero,0 #init_addr
|
||||
addi t3,zero,32 #counter
|
||||
|
||||
#sb写入 01,02,03,04
|
||||
addi s1,zero, 0x00 #
|
||||
addi s2,zero, 0x01 #
|
||||
|
||||
sb_store:
|
||||
sb s1,(t1)
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34 # system call for print
|
||||
ecall # print
|
||||
|
||||
add s1,s1,s2 #data +1
|
||||
addi t1,t1,1 # addr ++
|
||||
addi t3,t3,-1 #counter
|
||||
bne t3,zero,sb_store
|
||||
|
||||
addi t3,zero,8
|
||||
addi t1,zero,0 # addr
|
||||
sb_branch:
|
||||
lw s1,(t1) #读出数据
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34 # system call for print
|
||||
ecall # print
|
||||
addi t1,t1,4
|
||||
addi t3,t3, -1
|
||||
bne t3,zero,sb_branch
|
||||
|
||||
addi a7,zero,10 # system call for exit
|
||||
|
||||
#===== [4] 跳转类B：BLT 小于则跳转（从负数向零累加）=====
|
||||
#依次输出0xfffffff1 0xfffffff2 0xfffffff3 0xfffffff4 0xfffffff5 0xfffffff6 0xfffffff7 0xfffffff8 0xfffffff9 0xfffffffa 0xfffffffb 0xfffffffc 0xfffffffd 0xfffffffe 0xffffffff
|
||||
addi s1,zero,-15 #初始值
|
||||
blt_branch:
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall #输出当前值
|
||||
addi s1,s1,1
|
||||
blt s1,zero,blt_branch #测试指令
|
||||
|
||||
ccab_end:
|
||||
addi a7,zero,10
|
||||
|
||||
#处理器实现中请用停机指令实现ecall
|
||||
|
||||
jmp_count: addi s0,zero, 0
|
||||
addi s0,s0, 1
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 2
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 3
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 4
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 5
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 6
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 7
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
addi s0,s0, 8
|
||||
add a0,zero,s0
|
||||
addi a7,zero,34 # display hex
|
||||
addi a7,zero,34 # display hex
|
||||
ecall # we are out of here.
|
||||
|
||||
ret #persudo instruction jalr x0,x1,0
|
||||
@@ -0,0 +1,282 @@
|
||||
v2.0 raw
|
||||
00100493
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
394000ef
|
||||
00100413
|
||||
00100493
|
||||
01f49493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
0024d493
|
||||
00048463
|
||||
fedff06f
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00100493
|
||||
00249493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00048463
|
||||
fedff06f
|
||||
00100493
|
||||
01f49493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4034d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00100413
|
||||
01f41993
|
||||
41f9d993
|
||||
00000433
|
||||
00c00913
|
||||
00300b13
|
||||
00140413
|
||||
00f47413
|
||||
00800293
|
||||
00100313
|
||||
00499993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
00140413
|
||||
00f00f93
|
||||
01f47433
|
||||
01c41413
|
||||
00800293
|
||||
00100313
|
||||
0049d993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
01c45413
|
||||
406b0b33
|
||||
000b0463
|
||||
f95ff06f
|
||||
000002b3
|
||||
fff2c293
|
||||
00829293
|
||||
0ff2e293
|
||||
00500533
|
||||
02200893
|
||||
00000073
|
||||
fff00413
|
||||
00000493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
00140413
|
||||
00000433
|
||||
03c00493
|
||||
00042983
|
||||
0004aa03
|
||||
0149a2b3
|
||||
00028663
|
||||
0134a023
|
||||
01442023
|
||||
ffc48493
|
||||
fe9412e3
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00440413
|
||||
03c00493
|
||||
fc9416e3
|
||||
00a00893
|
||||
00000073
|
||||
00200293
|
||||
01100493
|
||||
00849493
|
||||
01148493
|
||||
01049493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
01c00e13
|
||||
0254d4b3
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
fffe0e13
|
||||
fe0e16e3
|
||||
00a00893
|
||||
00000073
|
||||
08800493
|
||||
00849493
|
||||
04848493
|
||||
08700913
|
||||
00891913
|
||||
05490913
|
||||
02997933
|
||||
01091913
|
||||
11096913
|
||||
01200533
|
||||
02200893
|
||||
00000073
|
||||
00a00893
|
||||
00000073
|
||||
00000313
|
||||
02000e13
|
||||
00000493
|
||||
00100913
|
||||
00930023
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
012484b3
|
||||
00130313
|
||||
fffe0e13
|
||||
fe0e12e3
|
||||
00800e13
|
||||
00000313
|
||||
00032483
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00430313
|
||||
fffe0e13
|
||||
fe0e14e3
|
||||
00a00893
|
||||
00000073
|
||||
ff100493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00148493
|
||||
fe04c8e3
|
||||
00a00893
|
||||
00000073
|
||||
00000413
|
||||
00140413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00240413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00340413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00440413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00540413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00640413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00740413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00840413
|
||||
00800533
|
||||
02200893
|
||||
02200893
|
||||
00000073
|
||||
00008067
|
||||
@@ -0,0 +1,421 @@
|
||||
.text
|
||||
addi sp, zero, 2000 #内存堆栈初始化
|
||||
|
||||
#############################################################
|
||||
#走马灯测?,测试addi,andi,slli,srli,srai,or,ori,nor,ecall LED按走马灯方式来回显示数据
|
||||
#############################################################
|
||||
|
||||
.text
|
||||
START:
|
||||
|
||||
addi s0,zero,1
|
||||
slli s3, s0, 31 # s3=0x80000000
|
||||
srai s3, s3, 31 # s3=0xFFFFFFFF
|
||||
add s0,zero,zero # s0=0
|
||||
addi s2,zero,12
|
||||
|
||||
addi s6,zero,8 #走马灯计数
|
||||
zmd_loop:
|
||||
|
||||
addi s0, s0, 1 #计算下一个走马灯的数
|
||||
andi s0, s0, 15
|
||||
|
||||
#######################################
|
||||
addi t0,zero,8
|
||||
addi t1,zero,1
|
||||
left:
|
||||
|
||||
slli s3, s3, 4 #走马灯左移
|
||||
or s3, s3, s0
|
||||
|
||||
add a0,zero,s3 # display s3
|
||||
addi a7,zero,34 # system call for LED display
|
||||
ecall # display
|
||||
|
||||
sub t0,t0,t1
|
||||
bne t0,zero,left
|
||||
#######################################
|
||||
|
||||
addi s0, s0, 1 #计算下一个走马灯的数
|
||||
addi t6,zero,15
|
||||
and s0, s0, t6
|
||||
slli s0, s0, 28
|
||||
|
||||
addi t0,zero,8
|
||||
addi t1,zero,1
|
||||
|
||||
zmd_right:
|
||||
|
||||
srli s3, s3, 4 #走马灯右移
|
||||
or s3, s3, s0
|
||||
|
||||
add a0,zero,s3 # display s3
|
||||
addi a7,zero,34 # system call for LED display
|
||||
ecall # display
|
||||
|
||||
sub t0,t0,t1
|
||||
bne t0,zero,zmd_right
|
||||
srli s0, s0, 28
|
||||
#######################################
|
||||
|
||||
sub s6,s6,t1
|
||||
beq s6,zero, exit
|
||||
j zmd_loop
|
||||
|
||||
exit:
|
||||
|
||||
add t0,zero,zero
|
||||
xori t0,t0,-1 #test nor ori
|
||||
slli t0,t0,16
|
||||
ori t0,t0,-1
|
||||
|
||||
add a0,zero,t0 # display t0
|
||||
addi a7,zero,34 # system call for LED display
|
||||
ecall # display
|
||||
|
||||
j START # loop forever
|
||||
|
||||
|
||||
#InteruptProgram1:
|
||||
#############################################################################################
|
||||
# exceptoin 1
|
||||
# 使用?s6? s5?s4?s3?s0?a0?a7
|
||||
#############################################################################################
|
||||
|
||||
################# 保护现场
|
||||
InteruptProgram1:
|
||||
sw t0, 0(sp) #保护t0现场
|
||||
addi sp, sp, 4
|
||||
sw t3, 0(sp) #保护t3现场
|
||||
addi sp, sp, 4
|
||||
sw s1, 0(sp) #保护s1现场
|
||||
addi sp, sp, 4
|
||||
sw a7, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw a0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s3, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s4, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s5, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s6, 0(sp)
|
||||
addi sp, sp, 4
|
||||
|
||||
csrrsi s6,0x41,0 #s6=uepc
|
||||
sw s6, 0(sp) #uepc压栈保护
|
||||
addi sp, sp, 4
|
||||
|
||||
|
||||
################# 开中断
|
||||
csrrsi zero,0x4,1 #ustatus.MIE=1
|
||||
|
||||
################# DIVU测试
|
||||
addi t0,zero,2 # /2
|
||||
addi s1,zero, 0x11
|
||||
slli s1,s1,8
|
||||
addi s1,s1,0x11
|
||||
slli s1,s1,16
|
||||
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall
|
||||
addi t3,zero,28 #ѭ������
|
||||
|
||||
divu_branch:
|
||||
divu s1,s1,t0 #����ָ��
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall #�����ǰֵ
|
||||
addi t3,t3, -1
|
||||
bne t3,zero,divu_branch #ѭ��
|
||||
|
||||
|
||||
addi a7,zero,10
|
||||
|
||||
################# 中断服务
|
||||
addi s6,zero,1 #中断?1,2,3 不同中断号显示值不一样
|
||||
addi s4,zero,3 #循环次数初始值
|
||||
addi s5,zero,1 #计数器累加值
|
||||
|
||||
IntLoop1:
|
||||
add s0,zero,s6
|
||||
|
||||
IntLeftShift1:
|
||||
|
||||
slli s0, s0, 4
|
||||
or s3,s0,s4
|
||||
add a0,zero,s3 #display s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall
|
||||
|
||||
bne s0, zero, IntLeftShift1
|
||||
sub s4,s4,s5 #循环次数递减
|
||||
bne s4, zero, IntLoop1
|
||||
|
||||
################# 关中断
|
||||
csrrci zero,0x4,1 #ustatus.MIE=0
|
||||
|
||||
################# 恢复现场
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
|
||||
csrrw zero,0x41,s6 #uepc=s6
|
||||
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s5, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s4, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s3, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s0, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw a0, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw a7, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s1, 0(sp) #恢复s1现场
|
||||
addi sp, sp, -4
|
||||
lw t3, 0(sp) #恢复t3现场
|
||||
addi sp, sp, -4
|
||||
lw t0, 0(sp) #恢复t0现场
|
||||
|
||||
################ 中断返回
|
||||
uret #同步开中断，uepc-->pc
|
||||
|
||||
|
||||
#InteruptProgram2:
|
||||
#############################################################################################
|
||||
# exceptoin 2
|
||||
# 使用?s6? s5?s4?s3?s0?a0?a7
|
||||
#############################################################################################
|
||||
|
||||
################# 保护现场
|
||||
InteruptProgram2:
|
||||
sw t1, 0(sp) #保护t1现场
|
||||
addi sp, sp, 4
|
||||
sw t3, 0(sp) #保护t3现场
|
||||
addi sp, sp, 4
|
||||
sw s1, 0(sp) #保护s1现场
|
||||
addi sp, sp, 4
|
||||
sw s2, 0(sp) #保护s2现场
|
||||
addi sp, sp, 4
|
||||
sw a7, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw a0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s3, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s4, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s5, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s6, 0(sp)
|
||||
addi sp, sp, 4
|
||||
|
||||
csrrsi s6,0x41,0 #s6=uepc
|
||||
sw s6, 0(sp) #uepc压栈保护
|
||||
addi sp, sp, 4
|
||||
|
||||
|
||||
################# 开中断
|
||||
csrrsi zero,0x4,1 #ustatus.MIE=1
|
||||
|
||||
################# BLT测试
|
||||
addi s1,zero,-15 #初始值
|
||||
blt_branch:
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34
|
||||
ecall #输出当前值
|
||||
addi s1,s1,1
|
||||
blt s1,zero,blt_branch #当前指令
|
||||
|
||||
|
||||
addi a7,zero,10
|
||||
|
||||
################# 中断服务
|
||||
|
||||
addi s6,zero,2 #中断?1,2,3 不同中断号显示值不一样
|
||||
|
||||
addi s4,zero,3 #循环次数初始值
|
||||
addi s5,zero,1 #计数器累加值
|
||||
|
||||
IntLoop2:
|
||||
add s0,zero,s6
|
||||
|
||||
IntLeftShift2:
|
||||
|
||||
|
||||
slli s0, s0, 4
|
||||
or s3,s0,s4
|
||||
add a0,zero,s3 #display s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall
|
||||
|
||||
bne s0, zero, IntLeftShift2
|
||||
sub s4,s4,s5 #循环次数递减
|
||||
bne s4, zero, IntLoop2
|
||||
|
||||
################# 关中断
|
||||
csrrci zero,0x4,1 #ustatus.MIE=0
|
||||
|
||||
################# 恢复现场
|
||||
|
||||
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
csrrw zero,0x41,s6 #uepc=s6
|
||||
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s5, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s4, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s3, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s0, 0(sp) #恢复s0现场
|
||||
addi sp, sp, -4
|
||||
lw a0, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw a7, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s2, 0(sp) #恢复s2现场
|
||||
addi sp, sp, -4
|
||||
lw s1, 0(sp) #恢复s1现场
|
||||
addi sp, sp, -4
|
||||
lw t3, 0(sp) #恢复t3现场
|
||||
addi sp, sp, -4
|
||||
lw t1, 0(sp) #恢复t1现场
|
||||
|
||||
################ 中断返回
|
||||
uret #同步开中断，uepc-->pc
|
||||
|
||||
|
||||
#InteruptProgram3:
|
||||
#############################################################################################
|
||||
# exceptoin 3
|
||||
# 使用?s6? s5?s4?s3?s0?a0?a7
|
||||
#############################################################################################
|
||||
|
||||
|
||||
################# 保护现场
|
||||
InteruptProgram3:
|
||||
sw s1, 0(sp) #保护s1现场
|
||||
addi sp, sp, 4
|
||||
sw a7, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw a0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s0, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s3, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s4, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s5, 0(sp)
|
||||
addi sp, sp, 4
|
||||
sw s6, 0(sp)
|
||||
addi sp, sp, 4
|
||||
|
||||
csrrsi s6,0x41,0 #s6=uepc
|
||||
sw s6, 0(sp) #uepc压栈保护
|
||||
addi sp, sp, 4
|
||||
|
||||
|
||||
################# 开中断
|
||||
csrrsi zero,0x4,1 #ustatus.MIE=1
|
||||
|
||||
################# SB测试
|
||||
addi t1,zero,0 #init_addr
|
||||
addi t3,zero,32 #counter
|
||||
|
||||
#sb写入 01,02,03,04
|
||||
addi s1,zero, 0x00 #
|
||||
addi s2,zero, 0x01 #
|
||||
|
||||
sb_store:
|
||||
sb s1,(t1)
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34 # system call for print
|
||||
ecall # print
|
||||
|
||||
add s1,s1,s2 #data +1
|
||||
addi t1,t1,1 # addr ++
|
||||
addi t3,t3,-1 #counter
|
||||
bne t3,zero,sb_store
|
||||
|
||||
addi t3,zero,8
|
||||
addi t1,zero,0 # addr
|
||||
sb_branch:
|
||||
lw s1,(t1) #读出数据
|
||||
add a0,zero,s1
|
||||
addi a7,zero,34 # system call for print
|
||||
ecall # print
|
||||
addi t1,t1,4
|
||||
addi t3,t3, -1
|
||||
bne t3,zero,sb_branch
|
||||
|
||||
addi a7,zero,10 # system call for exit
|
||||
|
||||
|
||||
################# 中断服务
|
||||
addi s6,zero,3 #中断?1,2,3 不同中断号显示值不一样
|
||||
addi s4,zero,3 #循环次数初始值
|
||||
addi s5,zero,1 #计数器累加值
|
||||
|
||||
IntLoop3:
|
||||
add s0,zero,s6
|
||||
|
||||
IntLeftShift3:
|
||||
|
||||
slli s0, s0, 4
|
||||
or s3,s0,s4
|
||||
add a0,zero,s3 #display s0
|
||||
addi a7,zero,34 # display hex
|
||||
ecall
|
||||
|
||||
bne s0, zero, IntLeftShift3
|
||||
sub s4,s4,s5 #循环次数递减
|
||||
bne s4, zero, IntLoop3
|
||||
|
||||
################# 关中断
|
||||
csrrci zero,0x4,1 #ustatus.MIE=0
|
||||
|
||||
|
||||
|
||||
################# 恢复现场
|
||||
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
csrrw zero,0x41,s6 #uepc=s6
|
||||
|
||||
addi sp, sp, -4
|
||||
lw s6, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s5, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s4, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s3, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s0, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw a0, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw a7, 0(sp)
|
||||
addi sp, sp, -4
|
||||
lw s1, 0(sp) #恢复s1现场
|
||||
|
||||
################ 中断返回
|
||||
uret #同步开中断，uepc-->pc
|
||||
|
||||
@@ -0,0 +1,270 @@
|
||||
7d000113
|
||||
00100413
|
||||
01f41993
|
||||
41f9d993
|
||||
00000433
|
||||
00c00913
|
||||
00800b13
|
||||
00140413
|
||||
00f47413
|
||||
00800293
|
||||
00100313
|
||||
00499993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
00140413
|
||||
00f00f93
|
||||
01f47433
|
||||
01c41413
|
||||
00800293
|
||||
00100313
|
||||
0049d993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
01c45413
|
||||
406b0b33
|
||||
000b0463
|
||||
f95ff06f
|
||||
000002b3
|
||||
fff2c293
|
||||
01029293
|
||||
fff2e293
|
||||
00500533
|
||||
02200893
|
||||
00000073
|
||||
f5dff06f
|
||||
00512023
|
||||
00410113
|
||||
01c12023
|
||||
00410113
|
||||
00912023
|
||||
00410113
|
||||
01112023
|
||||
00410113
|
||||
00a12023
|
||||
00410113
|
||||
00812023
|
||||
00410113
|
||||
01312023
|
||||
00410113
|
||||
01412023
|
||||
00410113
|
||||
01512023
|
||||
00410113
|
||||
01612023
|
||||
00410113
|
||||
04106b73
|
||||
01612023
|
||||
00410113
|
||||
0040e073
|
||||
00200293
|
||||
01100493
|
||||
00849493
|
||||
01148493
|
||||
01049493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
01c00e13
|
||||
0254d4b3
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
fffe0e13
|
||||
fe0e16e3
|
||||
00a00893
|
||||
00000073
|
||||
00100b13
|
||||
00300a13
|
||||
00100a93
|
||||
01600433
|
||||
00441413
|
||||
014469b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
fe0416e3
|
||||
415a0a33
|
||||
fe0a10e3
|
||||
0040f073
|
||||
ffc10113
|
||||
00012b03
|
||||
041b1073
|
||||
ffc10113
|
||||
00012b03
|
||||
ffc10113
|
||||
00012a83
|
||||
ffc10113
|
||||
00012a03
|
||||
ffc10113
|
||||
00012983
|
||||
ffc10113
|
||||
00012403
|
||||
ffc10113
|
||||
00012503
|
||||
ffc10113
|
||||
00012883
|
||||
ffc10113
|
||||
00012483
|
||||
ffc10113
|
||||
00012e03
|
||||
ffc10113
|
||||
00012283
|
||||
00200073
|
||||
00612023
|
||||
00410113
|
||||
01c12023
|
||||
00410113
|
||||
00912023
|
||||
00410113
|
||||
01212023
|
||||
00410113
|
||||
01112023
|
||||
00410113
|
||||
00a12023
|
||||
00410113
|
||||
00812023
|
||||
00410113
|
||||
01312023
|
||||
00410113
|
||||
01412023
|
||||
00410113
|
||||
01512023
|
||||
00410113
|
||||
01612023
|
||||
00410113
|
||||
04106b73
|
||||
01612023
|
||||
00410113
|
||||
0040e073
|
||||
ff100493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00148493
|
||||
fe04c8e3
|
||||
00a00893
|
||||
00000073
|
||||
00200b13
|
||||
00300a13
|
||||
00100a93
|
||||
01600433
|
||||
00441413
|
||||
014469b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
fe0416e3
|
||||
415a0a33
|
||||
fe0a10e3
|
||||
0040f073
|
||||
ffc10113
|
||||
00012b03
|
||||
041b1073
|
||||
ffc10113
|
||||
00012b03
|
||||
ffc10113
|
||||
00012a83
|
||||
ffc10113
|
||||
00012a03
|
||||
ffc10113
|
||||
00012983
|
||||
ffc10113
|
||||
00012903
|
||||
ffc10113
|
||||
00012483
|
||||
ffc10113
|
||||
00012e03
|
||||
ffc10113
|
||||
00012303
|
||||
ffc10113
|
||||
00012403
|
||||
ffc10113
|
||||
00012503
|
||||
ffc10113
|
||||
00012883
|
||||
00200073
|
||||
00912023
|
||||
00410113
|
||||
01112023
|
||||
00410113
|
||||
00a12023
|
||||
00410113
|
||||
00812023
|
||||
00410113
|
||||
01312023
|
||||
00410113
|
||||
01412023
|
||||
00410113
|
||||
01512023
|
||||
00410113
|
||||
01612023
|
||||
00410113
|
||||
04106b73
|
||||
01612023
|
||||
00410113
|
||||
0040e073
|
||||
00000313
|
||||
02000e13
|
||||
00000493
|
||||
00100913
|
||||
00930023
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
012484b3
|
||||
00130313
|
||||
fffe0e13
|
||||
fe0e12e3
|
||||
00800e13
|
||||
00000313
|
||||
00032483
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00430313
|
||||
fffe0e13
|
||||
fe0e14e3
|
||||
00a00893
|
||||
00000073
|
||||
00300b13
|
||||
00300a13
|
||||
00100a93
|
||||
01600433
|
||||
00441413
|
||||
014469b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
fe0416e3
|
||||
415a0a33
|
||||
fe0a10e3
|
||||
0040f073
|
||||
ffc10113
|
||||
00012b03
|
||||
041b1073
|
||||
ffc10113
|
||||
00012b03
|
||||
ffc10113
|
||||
00012a83
|
||||
ffc10113
|
||||
00012a03
|
||||
ffc10113
|
||||
00012483
|
||||
ffc10113
|
||||
00012983
|
||||
ffc10113
|
||||
00012403
|
||||
ffc10113
|
||||
00012503
|
||||
ffc10113
|
||||
00012883
|
||||
00200073
|
||||
@@ -0,0 +1,276 @@
|
||||
00100493
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
0100006f
|
||||
00100493
|
||||
00200913
|
||||
00300993
|
||||
380000ef
|
||||
00100413
|
||||
00100493
|
||||
01f49493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
0024d493
|
||||
00048463
|
||||
fedff06f
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00100493
|
||||
00249493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00048463
|
||||
fedff06f
|
||||
00100493
|
||||
01f49493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4034d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
4044d493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00100413
|
||||
01f41993
|
||||
41f9d993
|
||||
00000433
|
||||
00c00913
|
||||
00300b13
|
||||
00140413
|
||||
00f47413
|
||||
00800293
|
||||
00100313
|
||||
00499993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
00140413
|
||||
00f00f93
|
||||
01f47433
|
||||
01c41413
|
||||
00800293
|
||||
00100313
|
||||
0049d993
|
||||
0089e9b3
|
||||
01300533
|
||||
02200893
|
||||
00000073
|
||||
406282b3
|
||||
fe0294e3
|
||||
01c45413
|
||||
406b0b33
|
||||
000b0463
|
||||
f95ff06f
|
||||
000002b3
|
||||
fff2c293
|
||||
00829293
|
||||
0ff2e293
|
||||
00500533
|
||||
02200893
|
||||
00000073
|
||||
fff00413
|
||||
00000493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
0084a023
|
||||
00140413
|
||||
00448493
|
||||
00140413
|
||||
00000433
|
||||
03c00493
|
||||
00042983
|
||||
0004aa03
|
||||
0149a2b3
|
||||
00028663
|
||||
0134a023
|
||||
01442023
|
||||
ffc48493
|
||||
fe9412e3
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00440413
|
||||
03c00493
|
||||
fc9416e3
|
||||
00a00893
|
||||
00200293
|
||||
01100493
|
||||
00849493
|
||||
01148493
|
||||
01049493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
01c00e13
|
||||
0254d4b3
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
fffe0e13
|
||||
fe0e16e3
|
||||
00a00893
|
||||
08800493
|
||||
00849493
|
||||
04848493
|
||||
08700913
|
||||
00891913
|
||||
05490913
|
||||
02997933
|
||||
01091913
|
||||
11096913
|
||||
01200533
|
||||
02200893
|
||||
00000073
|
||||
00a00893
|
||||
00000313
|
||||
02000e13
|
||||
00000493
|
||||
00100913
|
||||
00930023
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
012484b3
|
||||
00130313
|
||||
fffe0e13
|
||||
fe0e12e3
|
||||
00800e13
|
||||
00000313
|
||||
00032483
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00430313
|
||||
fffe0e13
|
||||
fe0e14e3
|
||||
00a00893
|
||||
ff100493
|
||||
00900533
|
||||
02200893
|
||||
00000073
|
||||
00148493
|
||||
fe04c8e3
|
||||
00a00893
|
||||
00000413
|
||||
00140413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00240413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00340413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00440413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00540413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00640413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00740413
|
||||
00800533
|
||||
02200893
|
||||
00000073
|
||||
00840413
|
||||
00800533
|
||||
02200893
|
||||
02200893
|
||||
00000073
|
||||
00008067
|
||||
@@ -0,0 +1,273 @@
|
||||
// Compile together with cpu21_riscv_redirect_int_bpb.v.
|
||||
// Example:
|
||||
// iverilog -g2012 -o cpu21_sim cpu21_riscv_redirect_int_bpb.v tb_cpu21_riscv_redirect_int_bpb.v
|
||||
// vvp cpu21_sim
|
||||
// The simulation writes cpu21_riscv_redirect_int_bpb.vcd for GTKWave.
|
||||
//
|
||||
// The program image is loaded into the ROM model with $readmemh from
|
||||
// ROM_FILE. A failed $readmemh only prints a warning and leaves the memory
|
||||
// untouched, so a wrong path used to make the ROM look like all-NOP
|
||||
// (0x00000013). The simulator working directory is not fixed (Vivado xsim
|
||||
// runs in <proj>.sim/sim_1/behav/xsim), so this testbench probes a list of
|
||||
// candidate paths and reports which one worked. An explicit path always
|
||||
// wins:
|
||||
// vvp cpu21_sim +ROM_FILE=<path> (iverilog/vvp)
|
||||
// xelab ... -generic_top "ROM_FILE=<path>" (Vivado xsim)
|
||||
module tb_cpu21_riscv_redirect_int_bpb #(
|
||||
parameter ROM_FILE = "risc-v-benchmark_ccab.hex"
|
||||
// risc-v-benchmark_ccab.hex
|
||||
// cpu21_riscv_redirect_int_bpb_rom.hex
|
||||
);
|
||||
localparam integer ROM_WORDS = 1024;
|
||||
localparam integer RAM_WORDS = 1024;
|
||||
localparam integer PATH_LEN = 512;
|
||||
// Sentinel that cannot appear as the first ROM word of a RISC-V image.
|
||||
localparam [31:0] EMPTY_ROM_WORD = 32'hFFFF_FFFF;
|
||||
|
||||
// Interrupt entry addresses, shared by the DUT instance and the trace
|
||||
// condition below. The DUT addresses the ROM with PC[11:2], so these three
|
||||
// entries live at words 43 / 120 / 192 of the program image (the first
|
||||
// "sw ..., 0(sp)" of each handler prologue).
|
||||
localparam [31:0] IRQ1_VECTOR = 32'h0000_30ac;
|
||||
localparam [31:0] IRQ2_VECTOR = 32'h0000_31e0;
|
||||
localparam [31:0] IRQ3_VECTOR = 32'h0000_3300;
|
||||
|
||||
reg clk;
|
||||
reg reset;
|
||||
reg [ 31:0] instr_i;
|
||||
reg [ 31:0] data_rdata_i;
|
||||
reg [ 2:0] irq_i;
|
||||
reg go_i;
|
||||
|
||||
reg [ 31:0] rom [0:ROM_WORDS-1];
|
||||
reg [ 31:0] ram [0:RAM_WORDS-1];
|
||||
|
||||
wire [ 31:0] instr_addr_o;
|
||||
wire [ 31:0] data_addr_o;
|
||||
wire [ 31:0] data_wdata_o;
|
||||
wire [ 3:0] data_wstrb_o;
|
||||
wire data_we_o;
|
||||
wire [ 31:0] led_data_o;
|
||||
wire led_valid_o;
|
||||
wire [ 31:0] if_pc_o;
|
||||
wire [ 31:0] id_pc_o;
|
||||
wire [ 31:0] ex_pc_o;
|
||||
wire [ 31:0] mem_pc_o;
|
||||
wire [ 31:0] wb_pc_o;
|
||||
wire [ 31:0] if_ir_o;
|
||||
wire [ 31:0] id_ir_o;
|
||||
wire [ 31:0] ex_ir_o;
|
||||
wire [ 31:0] mem_ir_o;
|
||||
wire [ 31:0] wb_ir_o;
|
||||
wire [ 31:0] rdin_o;
|
||||
wire [ 31:0] mdin_o;
|
||||
wire reg_write_o;
|
||||
wire mem_write_o;
|
||||
wire halted_o;
|
||||
|
||||
wire [ 2:0] irq_pending_o;
|
||||
wire [ 1:0] irq_current_level_o;
|
||||
wire [ 31:0] uepc_o;
|
||||
wire [ 31:0] ustatus_o;
|
||||
wire bpb_predict_hit_o;
|
||||
wire bpb_predict_taken_o;
|
||||
wire bpb_mispredict_o;
|
||||
|
||||
wire [ 15:0] cycle_count_o;
|
||||
wire [ 15:0] stall_count_o;
|
||||
wire [ 15:0] bubble_count_o;
|
||||
wire [ 15:0] conditional_taken_count_o;
|
||||
wire [ 15:0] unconditional_branch_count_o;
|
||||
wire [ 15:0] prediction_success_count_o;
|
||||
wire [ 15:0] prediction_failure_count_o;
|
||||
|
||||
integer i;
|
||||
integer tb_cycle;
|
||||
reg rom_loaded;
|
||||
reg [8*PATH_LEN-1:0] rom_file_path;
|
||||
|
||||
cpu21_riscv_redirect_int_bpb #(
|
||||
.RESET_PC (32'h0000_0000),
|
||||
.IRQ1_VECTOR(IRQ1_VECTOR),
|
||||
.IRQ2_VECTOR(IRQ2_VECTOR),
|
||||
.IRQ3_VECTOR(IRQ3_VECTOR),
|
||||
// The interrupt test program writes MIE only inside its handlers, so
|
||||
// the testbench starts with MIE already set (ustatus[0] = 1).
|
||||
.USTATUS_INIT(32'h0000_0001)
|
||||
) dut (
|
||||
.clk (clk),
|
||||
.reset (reset),
|
||||
.instr_i (instr_i),
|
||||
.data_rdata_i (data_rdata_i),
|
||||
.irq_i (irq_i),
|
||||
.go_i (go_i),
|
||||
.instr_addr_o (instr_addr_o),
|
||||
.data_addr_o (data_addr_o),
|
||||
.data_wdata_o (data_wdata_o),
|
||||
.data_wstrb_o (data_wstrb_o),
|
||||
.data_we_o (data_we_o),
|
||||
.led_data_o (led_data_o),
|
||||
.led_valid_o (led_valid_o),
|
||||
.if_pc_o (if_pc_o),
|
||||
.id_pc_o (id_pc_o),
|
||||
.ex_pc_o (ex_pc_o),
|
||||
.mem_pc_o (mem_pc_o),
|
||||
.wb_pc_o (wb_pc_o),
|
||||
.if_ir_o (if_ir_o),
|
||||
.id_ir_o (id_ir_o),
|
||||
.ex_ir_o (ex_ir_o),
|
||||
.mem_ir_o (mem_ir_o),
|
||||
.wb_ir_o (wb_ir_o),
|
||||
.rdin_o (rdin_o),
|
||||
.mdin_o (mdin_o),
|
||||
.reg_write_o (reg_write_o),
|
||||
.mem_write_o (mem_write_o),
|
||||
.halted_o (halted_o),
|
||||
.irq_pending_o (irq_pending_o),
|
||||
.irq_current_level_o (irq_current_level_o),
|
||||
.uepc_o (uepc_o),
|
||||
.ustatus_o (ustatus_o),
|
||||
.bpb_predict_hit_o (bpb_predict_hit_o),
|
||||
.bpb_predict_taken_o (bpb_predict_taken_o),
|
||||
.bpb_mispredict_o (bpb_mispredict_o),
|
||||
.cycle_count_o (cycle_count_o),
|
||||
.stall_count_o (stall_count_o),
|
||||
.bubble_count_o (bubble_count_o),
|
||||
.conditional_taken_count_o (conditional_taken_count_o),
|
||||
.unconditional_branch_count_o(unconditional_branch_count_o),
|
||||
.prediction_success_count_o (prediction_success_count_o),
|
||||
.prediction_failure_count_o (prediction_failure_count_o)
|
||||
);
|
||||
|
||||
always #5 clk = ~clk;
|
||||
|
||||
// The Logisim ROM uses PC[11:2] as its word address. This also maps
|
||||
// the three original interrupt vectors to the same ROM entries.
|
||||
always @* begin
|
||||
instr_i = 32'h00000013;
|
||||
if (instr_addr_o[11:2] < ROM_WORDS) instr_i = rom[instr_addr_o[11:2]];
|
||||
end
|
||||
|
||||
// Asynchronous read model for data memory.
|
||||
always @* begin
|
||||
data_rdata_i = 32'b0;
|
||||
if (data_addr_o[11:2] < RAM_WORDS) data_rdata_i = ram[data_addr_o[11:2]];
|
||||
end
|
||||
|
||||
// Synchronous write model with byte enables.
|
||||
always @(posedge clk) begin
|
||||
if (!reset && data_we_o && (data_addr_o[11:2] < RAM_WORDS)) begin
|
||||
if (data_wstrb_o[0]) ram[data_addr_o[11:2]][7:0] <= data_wdata_o[7:0];
|
||||
if (data_wstrb_o[1]) ram[data_addr_o[11:2]][15:8] <= data_wdata_o[15:8];
|
||||
if (data_wstrb_o[2]) ram[data_addr_o[11:2]][23:16] <= data_wdata_o[23:16];
|
||||
if (data_wstrb_o[3]) ram[data_addr_o[11:2]][31:24] <= data_wdata_o[31:24];
|
||||
end
|
||||
end
|
||||
|
||||
always @(posedge clk) begin
|
||||
if (reset) begin
|
||||
tb_cycle = 0;
|
||||
end else begin
|
||||
tb_cycle = tb_cycle + 1;
|
||||
if ((tb_cycle <= 20) || data_we_o || led_valid_o ||
|
||||
(irq_pending_o != 3'b000) ||
|
||||
(instr_addr_o == IRQ1_VECTOR) ||
|
||||
(instr_addr_o == IRQ2_VECTOR) ||
|
||||
(instr_addr_o == IRQ3_VECTOR)) begin
|
||||
$display(
|
||||
"t=%0t cyc=%0d PC=%08h ID=%08h EX=%08h MEM=%08h WB=%08h irq=%b pend=%b uepc=%08h LEDv=%b LED=%08h memwe=%b addr=%08h wdata=%08h wstrb=%b",
|
||||
$time, tb_cycle, if_pc_o, id_ir_o, ex_ir_o, mem_ir_o, wb_ir_o, irq_i, irq_pending_o,
|
||||
uepc_o, led_valid_o, led_data_o, data_we_o, data_addr_o, data_wdata_o, data_wstrb_o);
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
// Try to load the ROM image from "fname". "loaded" is 1 when the file
|
||||
// existed and contained at least one word. A sentinel in rom[0] makes a
|
||||
// silent load failure impossible to miss.
|
||||
task load_rom_image;
|
||||
input [8*PATH_LEN-1:0] fname;
|
||||
output loaded;
|
||||
integer fh;
|
||||
begin
|
||||
loaded = 1'b0;
|
||||
fh = $fopen(fname, "r");
|
||||
if (fh != 0) begin
|
||||
$fclose(fh);
|
||||
rom[0] = EMPTY_ROM_WORD;
|
||||
$readmemh(fname, rom);
|
||||
if (rom[0] === EMPTY_ROM_WORD) begin
|
||||
// Opened but empty: restore the default NOP fill.
|
||||
rom[0] = 32'h0000_0013;
|
||||
end else begin
|
||||
rom_file_path = fname;
|
||||
loaded = 1'b1;
|
||||
$display("NOTE: ROM image loaded from \"%0s\".", fname);
|
||||
end
|
||||
end
|
||||
end
|
||||
endtask
|
||||
|
||||
initial begin
|
||||
clk = 1'b0;
|
||||
reset = 1'b1;
|
||||
irq_i = 3'b000;
|
||||
go_i = 1'b0;
|
||||
tb_cycle = 0;
|
||||
|
||||
for (i = 0; i < ROM_WORDS; i = i + 1) rom[i] = 32'h00000013;
|
||||
for (i = 0; i < RAM_WORDS; i = i + 1) ram[i] = 32'b0;
|
||||
|
||||
// Seed a few words so memory activity is visible in the waveform.
|
||||
ram[1] = 32'h1234_5678;
|
||||
ram[2] = 32'h89ab_cdef;
|
||||
|
||||
// Probe the usual locations for the ROM image. The first readable
|
||||
// candidate wins; failed probes below are harmless (the ROM keeps its
|
||||
// 0x00000013 fill until a real image is found).
|
||||
$display("NOTE: searching for ROM image \"%0s\" ...", ROM_FILE);
|
||||
|
||||
rom_loaded = 1'b0;
|
||||
if ($value$plusargs("ROM_FILE=%s", rom_file_path)) load_rom_image(rom_file_path, rom_loaded);
|
||||
if (!rom_loaded) load_rom_image(ROM_FILE, rom_loaded);
|
||||
if (!rom_loaded) load_rom_image({"testbench/", ROM_FILE}, rom_loaded);
|
||||
if (!rom_loaded) load_rom_image({"../testbench/", ROM_FILE}, rom_loaded);
|
||||
if (!rom_loaded) load_rom_image({"../../../testbench/", ROM_FILE}, rom_loaded);
|
||||
if (!rom_loaded) load_rom_image({"../../../../../testbench/", ROM_FILE}, rom_loaded);
|
||||
if (!rom_loaded)
|
||||
$display(
|
||||
"WARNING: no ROM image found for \"%0s\" - the ROM stays filled with NOPs (0x00000013).",
|
||||
ROM_FILE
|
||||
);
|
||||
|
||||
$dumpfile("cpu21_riscv_redirect_int_bpb.vcd");
|
||||
$dumpvars(0, tb_cpu21_riscv_redirect_int_bpb);
|
||||
|
||||
#22 reset = 1'b0;
|
||||
|
||||
// Button-like interrupt pulses. The DUT synchronizes and latches them.
|
||||
repeat (80) @(negedge clk);
|
||||
irq_i[0] = 1'b1;
|
||||
@(negedge clk);
|
||||
irq_i[0] = 1'b0;
|
||||
|
||||
repeat (180) @(negedge clk);
|
||||
irq_i[1] = 1'b1;
|
||||
@(negedge clk);
|
||||
irq_i[1] = 1'b0;
|
||||
|
||||
repeat (180) @(negedge clk);
|
||||
irq_i[2] = 1'b1;
|
||||
@(negedge clk);
|
||||
irq_i[2] = 1'b0;
|
||||
|
||||
repeat (5560) @(negedge clk);
|
||||
$display(
|
||||
"FINAL: tb_cycles=%0d dut_cycles=%0d stalls=%0d bubbles=%0d cond_taken=%0d uncond=%0d pred_ok=%0d pred_fail=%0d halted=%b",
|
||||
tb_cycle, cycle_count_o, stall_count_o, bubble_count_o, conditional_taken_count_o,
|
||||
unconditional_branch_count_o, prediction_success_count_o, prediction_failure_count_o,
|
||||
halted_o);
|
||||
$finish;
|
||||
end
|
||||
endmodule
|
||||
|
||||
Reference in New Issue
Block a user