207 lines
11 KiB
Plaintext
207 lines
11 KiB
Plaintext
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*** Variables ***
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${csr_script}= SEPARATOR=
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... if request.IsRead: ${\n}${SPACE}
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... cpu.DebugLog('CSR read!') ${\n}
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... elif request.IsWrite: ${\n}${SPACE}
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... cpu.DebugLog('CSR written: {}!'.format(hex(request.Value)))
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${xadd}= SEPARATOR=
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... src_reg_a = (instruction >> 3) & 0xF ${\n}
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... src_reg_b = (instruction >> 12) & 0xF ${\n}
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... res = cpu.GetRegister(src_reg_a).RawValue + cpu.GetRegister(src_reg_b).RawValue ${\n}
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... state['res'] = res
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${xmv}= SEPARATOR=
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... dst_reg = (instruction >> 3) & 0xF ${\n}
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... cpu.SetRegister(dst_reg, state['res'])
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*** Keywords ***
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Create Machine
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Execute Command mach create
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Execute Command machine LoadPlatformDescriptionFromString "cpu: CPU.RiscV64 @ sysbus { cpuType: \\"rv64imac_zicsr\\"; timeProvider: empty }"
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Execute Command machine LoadPlatformDescriptionFromString "mem: Memory.MappedMemory @ sysbus 0x0 { size: 0x1000 }"
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Execute Command sysbus.cpu PC 0x0
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Load Code To Memory
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# li x1, 0x147
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Execute Command sysbus WriteDoubleWord 0x0 0x14700093
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# csrw 0xf0d, x1
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Execute Command sysbus WriteDoubleWord 0x4 0xf0d09073
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# csrr x2, 0xf0d
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Execute Command sysbus WriteDoubleWord 0x8 0xf0d02173
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*** Test Cases ***
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Should Install Custom 16-bit Instruction
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Create Machine
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Create Log Tester 1
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001110" "cpu.DebugLog('custom instruction executed!')"
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Execute Command logLevel 0
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Execute Command sysbus WriteWord 0x0 0xb38e
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Execute Command log "--- start ---"
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Execute Command sysbus.cpu Step
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Execute Command log "--- stop ---"
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Wait For Log Entry --- start ---
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Wait For Log Entry custom instruction executed!
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Wait For Log Entry --- stop ---
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Should Not Install Custom Instructions With Invalid Length Encoding
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Create Machine
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# 16 bit
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Run Keyword And Expect Error *Pattern 0xB38F is invalid for 16 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxAA, AA != 11*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001111" "cpu.DebugLog('custom instruction executed!')"
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# 32 bit
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Run Keyword And Expect Error *Pattern 0xB38F0F82 is invalid for 32 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxxxxxxxxxxxxxxBBB11, BBB != 111*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "10110011100011110000111110000010" "cpu.DebugLog('custom instruction executed!')"
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Run Keyword And Expect Error *Pattern 0xB38F0F9F is invalid for 32 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxxxxxxxxxxxxxxBBB11, BBB != 111*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "10110011100011110000111110011111" "cpu.DebugLog('custom instruction executed!')"
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Run Keyword And Expect Error *Pattern 0xB38F0F9E is invalid for 32 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxxxxxxxxxxxxxxBBB11, BBB != 111*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "10110011100011110000111110011110" "cpu.DebugLog('custom instruction executed!')"
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# 64 bit
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Run Keyword And Expect Error *Pattern 0xB38F0F82B38F0FBB is invalid for 64 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0111111*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001111000011111000001010110011100011110000111110111011" "cpu.DebugLog('custom instruction executed!')"
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Run Keyword And Expect Error *Pattern 0xB38F0F82B38F0FFF is invalid for 64 bits long instruction. Expected instruction in format: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0111111*
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... Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001111000011111000001010110011100011110000111111111111" "cpu.DebugLog('custom instruction executed!')"
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Should Install Custom 32-bit Instruction
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Create Machine
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Create Log Tester 1
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "10110011100011110000111110000011" "cpu.DebugLog('custom instruction executed!')"
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Execute Command logLevel 0
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Execute Command sysbus WriteDoubleWord 0x0 0xb38f0f83
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Execute Command log "--- start ---"
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Execute Command sysbus.cpu Step
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Execute Command log "--- stop ---"
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Wait For Log Entry --- start ---
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Wait For Log Entry custom instruction executed!
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Wait For Log Entry --- stop ---
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Should Install Custom 64-bit Instruction
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Create Machine
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Create Log Tester 1
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001111000011111000001010110011100011110000111110111111" "cpu.DebugLog('custom instruction executed!')"
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Execute Command logLevel 0
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Execute Command sysbus WriteDoubleWord 0x0 0xb38f0fbf
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Execute Command sysbus WriteDoubleWord 0x4 0xb38f0f82
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Execute Command log "--- start ---"
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Execute Command sysbus.cpu Step
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Execute Command log "--- stop ---"
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Wait For Log Entry --- start ---
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Wait For Log Entry custom instruction executed!
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Wait For Log Entry --- stop ---
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Should Override An Existing 32-bit Instruction
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Create Machine
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Create Log Tester 1
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# normally this instruction means "li x1, 0x147"
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# but we override it with a custom implementation
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "00010100011100000000000010010011" "cpu.DebugLog('custom instruction executed!')"
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Execute Command logLevel 0
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Execute Command sysbus WriteDoubleWord 0x0 0x14700093
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Register Should Be Equal 1 0x0
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Execute Command log "--- start ---"
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Execute Command sysbus.cpu Step
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Execute Command log "--- stop ---"
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Register Should Be Equal 1 0x0
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Wait For Log Entry --- start ---
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Wait For Log Entry custom instruction executed!
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Wait For Log Entry --- stop ---
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Should Install Custom 32-bit Instructions Sharing State
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Create Machine
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Create Log Tester 1
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "1011001110001111bbbb11111aaaa011" "${xadd}"
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Execute Command sysbus.cpu InstallCustomInstructionHandlerFromString "0011001110001111000011111aaaa011" "${xmv}"
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# li x1, 0x147
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Execute Command sysbus WriteDoubleWord 0x0 0x14700093
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# li x2, 0x19
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Execute Command sysbus WriteDoubleWord 0x4 0x01900113
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# add values of x1 and x2 and store in the local register
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Execute Command sysbus WriteDoubleWord 0x8 0xB38F2F8B
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# move the local register to x3
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Execute Command sysbus WriteDoubleWord 0xC 0x338F0F9B
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Register Should Be Equal 1 0x0
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Register Should Be Equal 2 0x0
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Register Should Be Equal 3 0x0
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Execute Command sysbus.cpu Step 2
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Register Should Be Equal 1 0x147
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Register Should Be Equal 2 0x19
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Register Should Be Equal 3 0x0
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Execute Command sysbus.cpu Step
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Register Should Be Equal 1 0x147
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Register Should Be Equal 2 0x19
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Register Should Be Equal 3 0x0
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Execute Command sysbus.cpu Step
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Register Should Be Equal 1 0x147
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Register Should Be Equal 2 0x19
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Register Should Be Equal 3 0x160
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Should Register Simple Custom CSR
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Create Machine
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Execute Command sysbus.cpu CSRValidation 0
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Execute Command sysbus.cpu RegisterCustomCSR "test csr" 0xf0d 3
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Load Code To Memory
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Register Should Be Equal 1 0x0
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Register Should Be Equal 2 0x0
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Execute Command sysbus.cpu Step 3
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PC Should Be Equal 0xc
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Register Should Be Equal 1 0x147
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Register Should Be Equal 2 0x147
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Should Register Custom CSR
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Create Machine
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Create Log Tester 1
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Execute Command sysbus.cpu CSRValidation 0
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Execute Command sysbus.cpu RegisterCSRHandlerFromString 0xf0d "${csr_script}"
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Execute Command logLevel 0
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Load Code To Memory
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Execute Command sysbus.cpu Step 3
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${pc}= Execute Command sysbus.cpu PC
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Should Be Equal 0xc ${pc.replace('\n', '')}
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Register Should Be Equal 1 0x147
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Register Should Be Equal 2 0x147
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Wait For Log Entry CSR written: 0x147L!
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Wait For Log Entry CSR read!
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