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# RISC-V Compliance Test I-CSRRWI-01

#

# Copyright (c) 2017, Codasip Ltd.

# Copyright (c) 2018, Imperas Software Ltd. Additions

# All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are met:

#      * Redistributions of source code must retain the above copyright

#        notice, this list of conditions and the following disclaimer.

#      * Redistributions in binary form must reproduce the above copyright

#        notice, this list of conditions and the following disclaimer in the

#        documentation and/or other materials provided with the distribution.

#      * Neither the name of the Codasip Ltd., Imperas Software Ltd. nor the

#        names of its contributors may be used to endorse or promote products

#        derived from this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Codasip Ltd., Imperas Software Ltd.

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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

# Specification: RV32I Base Integer Instruction Set, Version 2.0

# Description: Testing instruction CSRRWI.

#include "compliance_test.h"

#include "compliance_io.h"

#include "test_macros.h"

# Test Virtual Machine (TVM) used by program.

RV_COMPLIANCE_RV32M

# Test code region.

RV_COMPLIANCE_CODE_BEGIN

    RVTEST_IO_INIT

    RVTEST_IO_ASSERT_GPR_EQ(x0, 0x00000000)

    RVTEST_IO_WRITE_STR("# Test Begin Reserved regs ra(x1) a0(x10) t0(x5)\n")

    # ---------------------------------------------------------------------------------------------

    RVTEST_IO_WRITE_STR("# Test part A - general test of CSRRWI\n");

    # Address for test results

    la      x15, test_A_res

    # Register initialization

    csrrw   x0, mscratch, x0

    # Test

    csrrwi  x2, mscratch, 1

    csrrwi  x4, mscratch, 0

    csrrwi  x6, mscratch, 0x1F

    csrrwi  x28, mscratch, 0x0F

    csrrwi  x30, mscratch, 0x10

    csrrwi  x31, mscratch, 0

    # Store results

    sw      x0, 0(x15)

    sw      x2, 4(x15)

    sw      x4, 8(x15)

    sw      x6, 12(x15)

    sw      x28, 16(x15)

    sw      x30, 20(x15)

    sw      x31, 24(x15)

    //

    // Assert

    //

    RVTEST_IO_CHECK()

    RVTEST_IO_ASSERT_GPR_EQ(x0, 0x00000000)

    RVTEST_IO_ASSERT_GPR_EQ(x2, 0x00000000)

    RVTEST_IO_ASSERT_GPR_EQ(x4, 0x00000001)

    RVTEST_IO_ASSERT_GPR_EQ(x6, 0x00000000)

    RVTEST_IO_ASSERT_GPR_EQ(x28, 0x0000001F)

    RVTEST_IO_ASSERT_GPR_EQ(x30, 0x0000000F)

    RVTEST_IO_ASSERT_GPR_EQ(x31, 0x00000010)

    RVTEST_IO_WRITE_STR("# Test part A1  - Complete\n");

    # ---------------------------------------------------------------------------------------------

    RVTEST_IO_WRITE_STR("# Test part B - testing writing to x0\n");

    # Address for test results

    la      x1, test_B_res

    # Test

    csrrwi  x0, mscratch, 0xF

    csrrwi  x0, mscratch, 0

    # store results

    sw      x0, 0(x1)

    RVTEST_IO_ASSERT_GPR_EQ(x0, 0x00000000)

    RVTEST_IO_WRITE_STR("# Test part A2  - Complete\n");

    RVTEST_IO_WRITE_STR("# Test End\n")

 # ---------------------------------------------------------------------------------------------

    # HALT

    RV_COMPLIANCE_HALT

RV_COMPLIANCE_CODE_END

# Input data section.

    .data

    .align 4

# Output data section.

RV_COMPLIANCE_DATA_BEGIN

    .align 4

test_A_res:

    .fill 7, 4, -1

test_B_res:

    .fill 1, 4, -1

RV_COMPLIANCE_DATA_END     # End of test output data region.