X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/5e92ca6a7ad1e3440d8e8ca80603f592f73804ed..ab7ee9fcbd14c1f6ce57e5efcebbaf231a50c48c:/Decode.v diff --git a/Decode.v b/Decode.v index a34eb3b..b541046 100644 --- a/Decode.v +++ b/Decode.v @@ -10,6 +10,7 @@ module Decode( output reg [31:0] op1, output reg [31:0] op2, output reg carry, + output reg [31:0] outcpsr, output reg [31:0] outspsr, output reg [3:0] read_0, @@ -63,9 +64,10 @@ module Decode( `DECODE_BRANCH, /* Branch */ `DECODE_LDCSTC, /* Coprocessor data transfer */ `DECODE_CDP, /* Coprocessor data op */ - `DECODE_MRCMCR, /* Coprocessor register transfer */ `DECODE_SWI: /* SWI */ rpc = inpc + 8; + `DECODE_MRCMCR: /* Coprocessor register transfer */ + rpc = inpc + 12; `DECODE_ALU: /* ALU */ rpc = inpc + (insn[25] ? 8 : (insn[4] ? 12 : 8)); default: /* X everything else out */ @@ -171,6 +173,7 @@ module Decode( begin read_0 = insn[19:16]; /* Rn */ read_1 = insn[3:0]; /* Rm */ + read_2 = insn[15:12]; op0_out = regs0; if(insn[25]) begin @@ -180,6 +183,7 @@ module Decode( op1_out = shift_res; carry_out = shift_cflag_out; end + op2_out = regs2; end `DECODE_LDMSTM: /* Block data transfer */ begin @@ -222,6 +226,7 @@ module Decode( op1 <= op1_out; /* 'operand 2' - Rm */ op2 <= op2_out; /* thirdedge - Rs */ carry <= carry_out; + outcpsr <= incpsr; outspsr <= inspsr; end