| Line 1088... |
Line 1088... |
execute_engine.state_nxt <= SYS_WAIT;
|
execute_engine.state_nxt <= SYS_WAIT;
|
end if;
|
end if;
|
|
|
when opcode_fop_c => -- floating-point operations
|
when opcode_fop_c => -- floating-point operations
|
-- ------------------------------------------------------------
|
-- ------------------------------------------------------------
|
if (CPU_EXTENSION_RISCV_Zfinx = true) then
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (decode_aux.is_float_op = '1') then
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_fpu_c; -- use FPU CP
|
ctrl_nxt(ctrl_cp_id_msb_c downto ctrl_cp_id_lsb_c) <= cp_sel_fpu_c; -- use FPU CP
|
execute_engine.is_cp_op_nxt <= '1'; -- this is a CP operation
|
execute_engine.is_cp_op_nxt <= '1'; -- this is a CP operation
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
ctrl_nxt(ctrl_alu_func1_c downto ctrl_alu_func0_c) <= alu_func_cmd_copro_c;
|
execute_engine.state_nxt <= ALU_WAIT;
|
execute_engine.state_nxt <= ALU_WAIT;
|
else
|
else
|
| Line 2108... |
Line 2108... |
-- --------------------------------------------------------------------------------
|
-- --------------------------------------------------------------------------------
|
else
|
else
|
|
|
-- floating-point (FPU) exception flags --
|
-- floating-point (FPU) exception flags --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
if (CPU_EXTENSION_RISCV_Zfinx = true) and (execute_engine.state = ALU_WAIT) then
|
if (CPU_EXTENSION_RISCV_Zfinx = true) then
|
csr.fflags <= csr.fflags or fpu_flags_i; -- accumulate flags ("accrued exception flags")
|
csr.fflags <= csr.fflags or fpu_flags_i; -- accumulate flags ("accrued exception flags")
|
end if;
|
end if;
|
|
|
-- mcause, mepc, mtval: machine trap cause, PC and value register --
|
-- mcause, mepc, mtval: machine trap cause, PC and value register --
|
-- --------------------------------------------------------------------
|
-- --------------------------------------------------------------------
|
