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| author | Tim Newsome <tim@sifive.com> | 2022-06-02 11:08:30 -0700 |
|---|---|---|
| committer | Tim Newsome <tim@sifive.com> | 2022-06-06 09:05:26 -0700 |
| commit | 62a1beccc7a65f982af4a49be5300617b694f5b2 (patch) | |
| tree | 14f0db751a901df73290c7e6ccf523c01cdb6d52 | |
| parent | 30e5368a7bb341dcff001ec8a56fcfd0ae8fda2f (diff) | |
| download | riscv-tests-62a1beccc7a65f982af4a49be5300617b694f5b2.zip riscv-tests-62a1beccc7a65f982af4a49be5300617b694f5b2.tar.gz riscv-tests-62a1beccc7a65f982af4a49be5300617b694f5b2.tar.bz2 | |
Add unaligned test cases for lw
The test passes if either the target register contains the correct
value, or the target raises a misaligned load exception.
| -rw-r--r-- | isa/rv64ui/lw.S | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/isa/rv64ui/lw.S b/isa/rv64ui/lw.S index 40a73f1..bb1cbb4 100644 --- a/isa/rv64ui/lw.S +++ b/isa/rv64ui/lw.S @@ -74,8 +74,31 @@ RVTEST_CODE_BEGIN li x2, 2; \ ) + # Test unaligned accesses, if the target supports them. + # Assume little-endian + TEST_LD_OP( 1000, lw, 0x0000000000ff00ff, 0, tdat ); + TEST_LD_OP( 1001, lw, 0x000000000000ff00, 1, tdat ); + TEST_LD_OP( 1002, lw, 0xffffffffff0000ff, 2, tdat ); + TEST_LD_OP( 1003, lw, 0x0000000000ff0000, 3, tdat ); + +skip_unaligned_tests: TEST_PASSFAIL + .align 2 + .global mtvec_handler +mtvec_handler: + # Only unaligned access tests should trap + li t0, 1000 + blt TESTNUM, t0, fail + + li t0, CAUSE_MISALIGNED_LOAD + csrr t1, mcause + bne t0, t1, fail + + la t0, skip_unaligned_tests + csrw mepc, t0 + mret + RVTEST_CODE_END .data |