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-rw-r--r--rtl/core/alu/alu.sv139
1 files changed, 0 insertions, 139 deletions
diff --git a/rtl/core/alu/alu.sv b/rtl/core/alu/alu.sv
deleted file mode 100644
index c0ccd32..0000000
--- a/rtl/core/alu/alu.sv
+++ /dev/null
@@ -1,139 +0,0 @@
-`include "core/uarch.sv"
-`include "core/decode/isa.sv"
-
-module core_alu
-#(parameter W=16)
-(
- input alu_op op,
- input logic[W - 1:0] a,
- b,
- input logic c_in,
- c_logic,
-
- output logic[W - 1:0] q,
- output psr_flags nzcv,
- output logic v_valid
-);
-
- logic c, v, c_add, c_sub, c_rsb, v_add, v_sub, v_rsb;
- logic[W - 1:0] not_b, q_add, q_sub, q_rsb, q_and, q_bic, q_orr, q_xor;
-
- assign not_b = ~b;
-
- core_alu_add #(.W(W), .SUB(0)) op_add
- (
- .q(q_add),
- .c(c_add),
- .v(v_add),
- .c_in(c_in && !op `FIELD_ALUOP_ADD_CMN && op `FIELD_ALUOP_ADD_NOTCMN_ADC),
- .*
- );
-
- core_alu_add #(.W(W), .SUB(1)) op_sub
- (
- .q(q_sub),
- .c(c_sub),
- .v(v_sub),
- .c_in(!c_in && op `FIELD_ALUOP_SUB_SBC),
- .*
- );
-
- core_alu_add #(.W(W), .SUB(1)) op_rsb
- (
- .a(b),
- .b(a),
- .q(q_rsb),
- .c(c_rsb),
- .v(v_rsb),
- .c_in(!c_in && op `FIELD_ALUOP_RSB_RSC),
- .*
- );
-
- core_alu_and #(.W(W)) op_and
- (
- .q(q_and),
- .*
- );
-
- core_alu_and #(.W(W)) op_bic
- (
- .b(not_b),
- .q(q_bic),
- .*
- );
-
- core_alu_orr #(.W(W)) op_orr
- (
- .q(q_orr),
- .*
- );
-
- core_alu_xor #(.W(W)) op_xor
- (
- .q(q_xor),
- .*
- );
-
- always_comb begin
- unique case(op)
- `ALU_ADD, `ALU_ADC, `ALU_CMN:
- q = q_add;
-
- `ALU_SUB, `ALU_SBC, `ALU_CMP:
- q = q_sub;
-
- `ALU_RSB, `ALU_RSC:
- q = q_rsb;
-
- `ALU_AND, `ALU_TST:
- q = q_and;
-
- `ALU_BIC:
- q = q_bic;
-
- `ALU_EOR, `ALU_TEQ:
- q = q_xor;
-
- `ALU_ORR:
- q = q_orr;
-
- `ALU_MOV:
- q = b;
-
- `ALU_MVN:
- q = not_b;
- endcase
-
- v = 1'bx;
- unique case(op)
- `ALU_AND, `ALU_EOR, `ALU_TST, `ALU_TEQ, `ALU_ORR, `ALU_MOV, `ALU_BIC, `ALU_MVN:
- c = c_logic;
-
- `ALU_ADD, `ALU_ADC, `ALU_CMN: begin
- c = c_add;
- v = v_add;
- end
-
- `ALU_SUB, `ALU_SBC, `ALU_CMP: begin
- c = c_sub;
- v = v_sub;
- end
-
- `ALU_RSB, `ALU_RSC: begin
- c = c_rsb;
- v = v_rsb;
- end
- endcase
-
- unique case(op)
- `ALU_AND, `ALU_EOR, `ALU_TST, `ALU_TEQ, `ALU_ORR, `ALU_MOV, `ALU_BIC, `ALU_MVN:
- v_valid = 0;
-
- `ALU_SUB, `ALU_RSB, `ALU_ADD, `ALU_ADC, `ALU_SBC, `ALU_RSC, `ALU_CMP, `ALU_CMN:
- v_valid = 1;
- endcase
- end
-
- assign nzcv = {q[W - 1], q == 0, c, v};
-
-endmodule