From d046cbfa4986acb50ef6b6e5ff58e9cab543980b Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Sun, 30 Jun 2019 11:30:18 +0200 Subject: Add PICORV32_TESTBUG_nnn ifdefs for testing purposes Signed-off-by: Clifford Wolf --- picorv32.v | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/picorv32.v b/picorv32.v index 5af2326..dc041c7 100644 --- a/picorv32.v +++ b/picorv32.v @@ -1326,7 +1326,13 @@ module picorv32 #( `ifndef PICORV32_REGS always @(posedge clk) begin if (resetn && cpuregs_write && latched_rd) +`ifdef PICORV32_TESTBUG_001 + cpuregs[latched_rd ^ 1] <= cpuregs_wrdata; +`elsif PICORV32_TESTBUG_002 + cpuregs[latched_rd] <= cpuregs_wrdata ^ 1; +`else cpuregs[latched_rd] <= cpuregs_wrdata; +`endif end always @* begin @@ -1995,8 +2001,16 @@ module picorv32 #( rvfi_rd_wdata <= 0; end else if (cpuregs_write && !irq_state) begin +`ifdef PICORV32_TESTBUG_003 + rvfi_rd_addr <= latched_rd ^ 1; +`else rvfi_rd_addr <= latched_rd; +`endif +`ifdef PICORV32_TESTBUG_004 + rvfi_rd_wdata <= latched_rd ? cpuregs_wrdata ^ 1 : 0; +`else rvfi_rd_wdata <= latched_rd ? cpuregs_wrdata : 0; +`endif end else if (rvfi_valid) begin rvfi_rd_addr <= 0; @@ -2037,7 +2051,11 @@ module picorv32 #( end always @* begin +`ifdef PICORV32_TESTBUG_005 + rvfi_pc_wdata = (dbg_irq_call ? dbg_irq_ret : dbg_insn_addr) ^ 4; +`else rvfi_pc_wdata = dbg_irq_call ? dbg_irq_ret : dbg_insn_addr; +`endif rvfi_csr_mcycle_rmask = 0; rvfi_csr_mcycle_wmask = 0; -- cgit