diff options
Diffstat (limited to 'isa/rv32ui/sh.S')
| -rw-r--r-- | isa/rv32ui/sh.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/isa/rv32ui/sh.S b/isa/rv32ui/sh.S index 387e181..6c47274 100644 --- a/isa/rv32ui/sh.S +++ b/isa/rv32ui/sh.S @@ -68,6 +68,23 @@ RVTEST_CODE_BEGIN TEST_ST_SRC21_BYPASS( 22, 1, 1, lh, sh, 0x0011, 8, tdat ); TEST_ST_SRC21_BYPASS( 23, 2, 0, lh, sh, 0x3001, 10, tdat ); + #--------------------------------------------------------------- + # Side effect tests + #--------------------------------------------------------------- + + # sh to a word aligned address should only affect the 2 lower bytes + # and should leave the 2 upper bytes unmodified. + # + # In this test we write 2 bytes to the lower 2 bytes of the word + # tdat11 and then ensure that the both the upper 2 bytes and + # lower 2 bytes are as expected. + TEST_CASE( 24, x3, 0x12343098, \ + la x1, tdat11; \ + li x2, 0x00003098; \ + sh x2, 0(x1); \ + lw x3, 0(x1); \ + ) + li a0, 0xbeef la a1, tdat sh a0, 6(a1) @@ -92,5 +109,6 @@ tdat7: .half 0xbeef tdat8: .half 0xbeef tdat9: .half 0xbeef tdat10: .half 0xbeef +tdat11: .word 0x12345678 RVTEST_DATA_END |