| // Copyright 2023 Google LLC |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include <riscv_vector.h> |
| #include <softrvv.h> |
| #include <springbok.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "pw_unit_test/framework.h" |
| |
| namespace vec_disable_test { |
| namespace { |
| |
| int exception_occurred = false; |
| int mcause = 0x0; |
| const int MCAUSE_ILLEGAL_INSTRUCTION = 0x2; |
| const uint32_t AVL_CONST = 15; |
| |
| class VecDisableTest : public ::testing::Test { |
| protected: |
| void SetUp() override { softrvv::disable_rvv(); } |
| void TearDown() override { softrvv::enable_rvv(); } |
| }; |
| |
| // TODO(b/301981842): Re-enable the test. |
| TEST_F(VecDisableTest, DISABLED_vec_disable) { |
| uint32_t vl = 0; |
| __asm__ volatile("vsetivli %[VL], %[AVL], e32, m1, tu, mu" |
| : [VL] "=r"(vl) |
| : [AVL] "n"(AVL_CONST)); |
| ASSERT_EQ(exception_occurred, true); |
| ASSERT_EQ(mcause, MCAUSE_ILLEGAL_INSTRUCTION); |
| } |
| |
| extern "C" void __attribute__((interrupt("machine"))) exception_handler(void) { |
| uint32_t mepc; |
| __asm__ volatile("csrr %[MCAUSE], mcause" : [MCAUSE] "=r"(mcause) :); |
| if (mcause == MCAUSE_ILLEGAL_INSTRUCTION) { |
| exception_occurred = true; |
| } |
| // Read MEPC and increment to skip offending instruction |
| __asm__ volatile("csrr %[MEPC], mepc" : [MEPC] "=r"(mepc) :); |
| mepc += 4; |
| __asm__ volatile("csrw mepc, %[MEPC]" ::[MEPC] "r"(mepc)); |
| return; |
| } |
| |
| } // namespace |
| } // namespace vec_disable_test |