diff options
Diffstat (limited to 'rtl/core/decode/decode.sv')
| -rw-r--r-- | rtl/core/decode/decode.sv | 33 |
1 files changed, 30 insertions, 3 deletions
diff --git a/rtl/core/decode/decode.sv b/rtl/core/decode/decode.sv index e93c476..850ddd0 100644 --- a/rtl/core/decode/decode.sv +++ b/rtl/core/decode/decode.sv @@ -11,10 +11,12 @@ module core_decode output snd_decode snd_ctrl, output data_decode data_ctrl, output ldst_decode ldst_ctrl, - output mul_decode mul_ctrl + output mul_decode mul_ctrl, + output coproc_decode coproc_ctrl ); - logic execute, undefined, conditional, writeback, update_flags, branch, ldst, mul; + logic execute, undefined, conditional, writeback, + update_flags, branch, ldst, mul, coproc; assign ctrl.execute = execute; assign ctrl.undefined = undefined; @@ -22,6 +24,7 @@ module core_decode assign ctrl.writeback = writeback; assign ctrl.update_flags = update_flags; assign ctrl.branch = branch; + assign ctrl.coproc = coproc; assign ctrl.ldst = ldst; assign ctrl.mul = mul; @@ -131,10 +134,23 @@ module core_decode .* ); + logic coproc_writeback, coproc_update_flags; + reg_num coproc_rd; + + core_decode_coproc group_coproc + ( + .rd(coproc_rd), + .decode(coproc_ctrl), + .writeback(coproc_writeback), + .update_flags(coproc_update_flags), + .* + ); + always_comb begin mul = 0; ldst = 0; branch = 0; + coproc = 0; execute = cond_execute; undefined = cond_undefined; @@ -234,8 +250,18 @@ module core_decode restore_spsr = ldst_mult_restore_spsr; end + `GROUP_CP: begin + coproc = 1; + writeback = coproc_writeback; + update_flags = coproc_update_flags; + + data_ctrl.op = `ALU_MOV; + data_ctrl.rn = coproc_rd; + data_ctrl.rd = coproc_rd; + data_ctrl.uses_rn = coproc_ctrl.load; + end + /*`GROUP_SWP: ; - `GROUP_CP: ; `INSN_MRS: ; `GROUP_MSR: ; `INSN_SWI: ;*/ @@ -259,6 +285,7 @@ module core_decode mul = 1'bx; ldst = 1'bx; branch = 1'bx; + coproc = 1'bx; writeback = 1'bx; conditional = 1'bx; update_flags = 1'bx; |