diff options
Diffstat (limited to 'rtl/core/decode/decode.sv')
| -rw-r--r-- | rtl/core/decode/decode.sv | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/rtl/core/decode/decode.sv b/rtl/core/decode/decode.sv index f5668c1..e93c476 100644 --- a/rtl/core/decode/decode.sv +++ b/rtl/core/decode/decode.sv @@ -14,14 +14,16 @@ module core_decode output mul_decode mul_ctrl ); - logic execute, undefined, conditional, writeback, update_flags, branch; + logic execute, undefined, conditional, writeback, update_flags, branch, ldst, mul; assign ctrl.execute = execute; assign ctrl.undefined = undefined; assign ctrl.conditional = conditional; assign ctrl.writeback = writeback; assign ctrl.update_flags = update_flags; - assign branch_ctrl.branch = branch; + assign ctrl.branch = branch; + assign ctrl.ldst = ldst; + assign ctrl.mul = mul; //TODO logic restore_spsr; @@ -130,11 +132,14 @@ module core_decode ); always_comb begin + mul = 0; + ldst = 0; branch = 0; - writeback = 0; - update_flags = 0; + execute = cond_execute; undefined = cond_undefined; + writeback = 0; + update_flags = 0; data_ctrl = {($bits(data_ctrl)){1'bx}}; data_ctrl.uses_rn = 1; @@ -152,7 +157,6 @@ module core_decode ldst_addr = {($bits(ldst_addr)){1'bx}}; ldst_ctrl = {($bits(ldst_ctrl)){1'bx}}; - ldst_ctrl.enable = 0; // El orden de los casos es importante, NO CAMBIAR priority casez(insn `FIELD_OP) @@ -168,7 +172,7 @@ module core_decode end `GROUP_MUL: begin - mul_ctrl.enable = 1; + mul = 1; data_ctrl.rd = mul_rd; data_ctrl.rn = mul_rs; @@ -241,7 +245,7 @@ module core_decode unique casez(insn `FIELD_OP) `GROUP_LDST_SINGLE, `GROUP_LDST_MISC, `GROUP_LDST_MULT: begin - ldst_ctrl.enable = 1; + ldst = 1; data_ctrl = data_ldst; writeback = ldst_ctrl.writeback || ldst_ctrl.load; end @@ -252,6 +256,8 @@ module core_decode if(undefined) begin execute = 0; + mul = 1'bx; + ldst = 1'bx; branch = 1'bx; writeback = 1'bx; conditional = 1'bx; |