X-Git-Url: http://git.joshuawise.com/firearm.git/blobdiff_plain/ae281afdd15d606536d5b445b49cbc3bafcb9b7c..03cf736e2c85ee881927ceef1fae0542c85077da:/ARM_Constants.v

diff --git a/ARM_Constants.v b/ARM_Constants.v
index a635c5e..2398e8d 100644
--- a/ARM_Constants.v
+++ b/ARM_Constants.v
@@ -24,7 +24,7 @@
 `define ALU_ADD 4'b0100
 `define ALU_ADC 4'b0101
 `define ALU_SBC 4'b0110
-`define ALU_RBC 4'b0111
+`define ALU_RSC 4'b0111
 `define ALU_TST 4'b1000
 `define ALU_TEQ 4'b1001
 `define ALU_CMP 4'b1010
@@ -45,3 +45,35 @@
 `define CPSR_V	28
 `define CPSR_I	7
 `define CPSR_F	6
+
+`define SHIFT_LSL 2'b00
+`define SHIFT_LSR 2'b01
+`define SHIFT_ASR 2'b10
+`define SHIFT_ROR 2'b11
+
+`define DECODE_ALU_MULT		32'b????000000??????????????1001????	/* Multiply -- must come before ALU, because it pattern matches a specific case of ALU */
+`define DECODE_ALU_MUL_LONG	32'b????00001???????????????1001????	/* Multiply long */
+`define DECODE_ALU_MRS		32'b????00010?001111????000000000000	/* MRS (Transfer PSR to register) */
+`define DECODE_ALU_MSR		32'b????00010?101001111100000000????	/* MSR (Transfer register to PSR) */
+`define DECODE_ALU_MSR_FLAGS	32'b????00?10?1010001111????????????	/* MSR (Transfer register or immediate to PSR, flag bits only) */
+`define DECODE_ALU_SWP		32'b????00010?00????????00001001????	/* Atomic swap */
+`define DECODE_ALU_BX		32'b????000100101111111111110001????	/* Branch and exchange */
+`define DECODE_ALU_HDATA_REG	32'b????000??0??????????00001??1????	/* Halfword transfer - register offset */
+`define DECODE_ALU_HDATA_IMM	32'b????000??1??????????00001??1????	/* Halfword transfer - immediate offset */
+`define DECODE_ALU		32'b????00??????????????????????????	/* ALU */
+`define DECODE_LDRSTR_UNDEFINED	32'b????011????????????????????1????	/* Undefined. I hate ARM */
+`define DECODE_LDRSTR		32'b????01??????????????????????????	/* Single data transfer */
+`define DECODE_LDMSTM		32'b????100?????????????????????????	/* Block data transfer */
+`define DECODE_BRANCH		32'b????101?????????????????????????	/* Branch */
+`define DECODE_LDCSTC		32'b????110?????????????????????????	/* Coprocessor data transfer */
+`define DECODE_CDP		32'b????1110???????????????????0????	/* Coprocessor data op */
+`define DECODE_MRCMCR		32'b????1110???????????????????1????	/* Coprocessor register transfer */
+`define DECODE_SWI		32'b????1111????????????????????????	/* SWI */
+
+`define MODE_USR 5'b10000
+`define MODE_FIQ 5'b10001
+`define MODE_IRQ 5'b10010
+`define MODE_SVC 5'b10011
+`define MODE_ABT 5'b10111
+`define MODE_UND 5'b11011
+`define MODE_SYS 5'b11111