diff options
Diffstat (limited to 'isa/rv32ui/lbu.S')
-rw-r--r-- | isa/rv32ui/lbu.S | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/isa/rv32ui/lbu.S b/isa/rv32ui/lbu.S new file mode 100644 index 0000000..d4192fb --- /dev/null +++ b/isa/rv32ui/lbu.S @@ -0,0 +1,90 @@ +#***************************************************************************** +# lbu.S +#----------------------------------------------------------------------------- +# +# Test lbu instruction. +# + +#include "riscv_test.h" +#include "test_macros.h" + +RVTEST_RV32U +RVTEST_CODE_BEGIN + + #------------------------------------------------------------- + # Basic tests + #------------------------------------------------------------- + + TEST_LD_OP( 2, lbu, 0x000000ff, 0, tdat ); + TEST_LD_OP( 3, lbu, 0x00000000, 1, tdat ); + TEST_LD_OP( 4, lbu, 0x000000f0, 2, tdat ); + TEST_LD_OP( 5, lbu, 0x0000000f, 3, tdat ); + + # Test with negative offset + + TEST_LD_OP( 6, lbu, 0x000000ff, -3, tdat4 ); + TEST_LD_OP( 7, lbu, 0x00000000, -2, tdat4 ); + TEST_LD_OP( 8, lbu, 0x000000f0, -1, tdat4 ); + TEST_LD_OP( 9, lbu, 0x0000000f, 0, tdat4 ); + + # Test with a negative base + + TEST_CASE( 10, x3, 0x000000ff, \ + la x1, tdat; \ + addi x1, x1, -32; \ + lbu x3, 32(x1); \ + ) + + # Test with unaligned base + + TEST_CASE( 11, x3, 0x00000000, \ + la x1, tdat; \ + addi x1, x1, -6; \ + lbu x3, 7(x1); \ + ) + + #------------------------------------------------------------- + # Bypassing tests + #------------------------------------------------------------- + + TEST_LD_DEST_BYPASS( 12, 0, lbu, 0x000000f0, 1, tdat2 ); + TEST_LD_DEST_BYPASS( 13, 1, lbu, 0x0000000f, 1, tdat3 ); + TEST_LD_DEST_BYPASS( 14, 2, lbu, 0x00000000, 1, tdat1 ); + + TEST_LD_SRC1_BYPASS( 15, 0, lbu, 0x000000f0, 1, tdat2 ); + TEST_LD_SRC1_BYPASS( 16, 1, lbu, 0x0000000f, 1, tdat3 ); + TEST_LD_SRC1_BYPASS( 17, 2, lbu, 0x00000000, 1, tdat1 ); + + #------------------------------------------------------------- + # Test write-after-write hazard + #------------------------------------------------------------- + + TEST_CASE( 18, x2, 2, \ + la x3, tdat; \ + lbu x2, 0(x3); \ + li x2, 2; \ + ) + + TEST_CASE( 19, x2, 2, \ + la x3, tdat; \ + lbu x2, 0(x3); \ + nop; \ + li x2, 2; \ + ) + + TEST_PASSFAIL + +RVTEST_CODE_END + + .data +RVTEST_DATA_BEGIN + + TEST_DATA + +tdat: +tdat1: .byte 0xff +tdat2: .byte 0x00 +tdat3: .byte 0xf0 +tdat4: .byte 0x0f + +RVTEST_DATA_END |