diff options
Diffstat (limited to 'rv64cpu/tb/unit/tb_hazard_unit.cc')
| -rw-r--r-- | rv64cpu/tb/unit/tb_hazard_unit.cc | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/rv64cpu/tb/unit/tb_hazard_unit.cc b/rv64cpu/tb/unit/tb_hazard_unit.cc index 69ebab9..d43ccc5 100644 --- a/rv64cpu/tb/unit/tb_hazard_unit.cc +++ b/rv64cpu/tb/unit/tb_hazard_unit.cc @@ -42,9 +42,13 @@ void reset(Vhazard_unit* dut) { dut->ex_reg_write_en = 0; dut->ex_is_load = 0; dut->ex_branch_taken = 0; + dut->ex_branch_target = 0; dut->mem_rd_addr = 0; dut->mem_reg_write_en = 0; dut->mem_stall_req = 0; + dut->trap_flush_req = 0; + dut->trap_pc_sel = 0; + dut->trap_target_pc = 0; dut->wb_rd_addr = 0; dut->wb_reg_write_en = 0; dut->eval(); @@ -69,6 +73,8 @@ int main(int argc, char** argv) { check(dut->id_ex_flush_en == 0, "NoHazard_NoIDEXFlush"); check(dut->id_ex_stall_en == 0, "NoHazard_NoIDEXStall"); check(dut->ex_mem_stall_en == 0, "NoHazard_NoEXMEMStall"); + check(dut->pc_redirect_sel == 0, "NoHazard_NoRedirect"); + check(dut->pc_redirect_is_trap == 0, "NoHazard_NoTrapRedirect"); // ----------------------- // 2. Forward A from MEM stage @@ -231,11 +237,15 @@ int main(int argc, char** argv) { // ----------------------- reset(dut); dut->ex_branch_taken = 1; + dut->ex_branch_target = 0x400; dut->eval(); check(dut->if_id_flush_en == 1, "Branch_IFID_Flush"); check(dut->id_ex_flush_en == 1, "Branch_IDEX_Flush"); check(dut->if_stall_en == 0, "Branch_IF_NoStall"); check(dut->if_id_stall_en == 0, "Branch_IFID_NoStall"); + check(dut->pc_redirect_sel == 1, "Branch_Redirect_Valid"); + check(dut->pc_redirect_is_trap == 0, "Branch_Redirect_NotTrap"); + check(dut->pc_redirect_target == 0x400, "Branch_Redirect_Target"); // ----------------------- // 15. Branch overrides load-use stall @@ -282,12 +292,48 @@ int main(int argc, char** argv) { // ----------------------- reset(dut); dut->ex_branch_taken = 1; + dut->ex_branch_target = 0x410; dut->mem_stall_req = 1; dut->eval(); check(dut->if_id_flush_en == 1, "Branch_MemStall_IFID_Flush"); check(dut->id_ex_flush_en == 1, "Branch_MemStall_IDEX_Flush"); check(dut->if_stall_en == 0, "Branch_MemStall_IF_NoStall"); + // ----------------------- + // 19. Trap redirect overrides branch and stalls + // ----------------------- + reset(dut); + dut->trap_pc_sel = 1; + dut->trap_flush_req = 1; + dut->trap_target_pc = 0x800; + dut->ex_branch_taken = 1; + dut->ex_branch_target = 0x900; + dut->mem_stall_req = 1; + dut->eval(); + check(dut->pc_redirect_sel == 1, "Trap_Redirect_Valid"); + check(dut->pc_redirect_is_trap == 1, "Trap_Redirect_IsTrap"); + check(dut->pc_redirect_target == 0x800, "Trap_Redirect_Target"); + check(dut->if_id_flush_en == 1, "Trap_Flush_IFID"); + check(dut->id_ex_flush_en == 1, "Trap_Flush_IDEX"); + check(dut->if_stall_en == 0, "Trap_Clears_IF_Stall"); + check(dut->if_id_stall_en == 0, "Trap_Clears_IFID_Stall"); + check(dut->id_ex_stall_en == 0, "Trap_Clears_IDEX_Stall"); + check(dut->ex_mem_stall_en == 0, "Trap_Clears_EXMEM_Stall"); + + // ----------------------- + // 20. Trap flush overrides load-use stall even without redirect + // ----------------------- + reset(dut); + dut->trap_flush_req = 1; + dut->ex_is_load = 1; + dut->ex_rd_addr = 4; + dut->id_rs1_addr = 4; + dut->eval(); + check(dut->if_id_flush_en == 1, "TrapFlush_IFID"); + check(dut->id_ex_flush_en == 1, "TrapFlush_IDEX"); + check(dut->if_stall_en == 0, "TrapFlush_NoIFStall"); + check(dut->if_id_stall_en == 0, "TrapFlush_NoIFIDStall"); + std::cout << "----------------------------------" << std::endl; std::cout << "\033[32mAll " << pass_count << " tests passed!\033[0m" << std::endl; std::cout << "----------------------------------" << std::endl; |