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picorv32
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Fixed jalr, c_jalr, and c_jr insns (bug discovered by riscv-formal)

This commit is contained in:
Clifford Wolf 2017-05-18 17:19:08 +02:00
parent 436544ccab
commit bb9ebeb9e3
1 changed files with 2 additions and 2 deletions
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4
picorv32.v
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@ -1175,7 +1175,7 @@ module picorv32 #(
reg [regindex_bits-1:0] latched_rd;
reg [31:0] current_pc;
assign next_pc = latched_store && latched_branch ? reg_out : reg_next_pc;
assign next_pc = latched_store && latched_branch ? reg_out & ~1 : reg_next_pc;
reg [3:0] pcpi_timeout_counter;
reg pcpi_timeout;
@ -1430,7 +1430,7 @@ module picorv32 #(
(* parallel_case *)
case (1'b1)
latched_branch: begin
current_pc = latched_store ? (latched_stalu ? alu_out_q : reg_out) : reg_next_pc;
current_pc = latched_store ? (latched_stalu ? alu_out_q : reg_out) & ~1 : reg_next_pc;
`debug($display("ST_RD: %2d 0x%08x, BRANCH 0x%08x", latched_rd, reg_pc + (latched_compr ? 2 : 4), current_pc);)
end
latched_store && !latched_branch: begin