*** Variables ***
${SCRIPT}                     ${CURDIR}/../../scripts/single-node/leon3_zephyr.resc
${UART}                       sysbus.uart
${PROMPT}                     uart:~$

*** Keywords ***
Prepare Machine
    Execute Script            ${SCRIPT}

    Create Terminal Tester    ${UART}

ASR18 Should Be Equal
    [Arguments]  ${expected}

    Register Should Be Equal  39  ${expected}

*** Test Cases ***
Should Boot Zephyr
    [Documentation]           Boots Zephyr on the Leon3 platform.
    [Tags]                    zephyr  uart
    Prepare Machine

    Start Emulation

    Wait For Prompt On Uart   ${PROMPT}

    Provides                  booted-zephyr

Should Print Version
    [Documentation]           Tests shell responsiveness in Zephyr on the Leon3 platform.
    [Tags]                    zephyr  uart
    Requires                  booted-zephyr

    Write Line To Uart        version
    Wait For Line On Uart     Zephyr version 2.6.99

Should Handle WRASR
    Prepare Machine

    # Note that these writes to memory are in the emulation target's endianness (which is big-endian here), NOT the host's.
    # For example, after `sysbus WriteDoubleWord 0x00000000 0x03100000`, the memory content as a byte array is `[0x03, 0x10, 0x00, 0x00]`.
    # sethi  %hi(0xa5a5a400), %g1
    Execute Command           sysbus WriteDoubleWord 0x40000000 0x03296969
    # or     %g1, 0x1a5, %g1
    Execute Command           sysbus WriteDoubleWord 0x40000004 0x821061a5
    # orn    %g0, %g0, %g2
    Execute Command           sysbus WriteDoubleWord 0x40000008 0x84300000
    # wr     0x1555, %asr18
    Execute Command           sysbus WriteDoubleWord 0x4000000c 0xa5803555
    # wr     %g1, %asr18
    Execute Command           sysbus WriteDoubleWord 0x40000010 0xa5800001
    # wr     %g2, 0x1555, %asr18
    Execute Command           sysbus WriteDoubleWord 0x40000014 0xa580b555
    # wr     %g1, %g2, %asr18
    Execute Command           sysbus WriteDoubleWord 0x40000018 0xa5804002
    # wr     %g2, %asr15
    Execute Command           sysbus WriteDoubleWord 0x4000001c 0x9f800002
    # nop
    Execute Command           sysbus WriteDoubleWord 0x40000020 0x01000000
    # ba .
    Execute Command           sysbus WriteDoubleWord 0x40000024 0x10800000
    # nop
    Execute Command           sysbus WriteDoubleWord 0x40000028 0x01000000

    PC Should Be Equal        0x40000000

    Execute Command           cpu Step 3
    PC Should Be Equal        0x4000000c
    ASR18 Should Be Equal     0x0

    Execute Command           cpu Step
    PC Should Be Equal        0x40000010
    ASR18 Should Be Equal     0xfffff555

    Execute Command           cpu Step
    PC Should Be Equal        0x40000014
    ASR18 Should Be Equal     0xa5a5a5a5

    Execute Command           cpu Step
    PC Should Be Equal        0x40000018
    ASR18 Should Be Equal     0xaaa

    Execute Command           cpu Step
    PC Should Be Equal        0x4000001c
    ASR18 Should Be Equal     0x5a5a5a5a

    Execute Command           cpu Step
    # If we get here, we didn't crash on the write to ASR15.
    PC Should Be Equal        0x40000020
    ASR18 Should Be Equal     0x5a5a5a5a