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🐛 Fix remove ALU operators

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This commit is contained in:
Florian Zaruba 2017-05-12 10:42:03 +02:00
parent 74c33bf1ba
commit 5ffb9ef36c
2 changed files with 11 additions and 11 deletions
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2
include/ariane_pkg.svh
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@ -74,7 +74,7 @@ package ariane_pkg;
// jumps
JAL, JALR,
// set lower than operations
SLTS, SLTU, SLETS, SLETU,
SLTS, SLTU,
// CSR functions
MRET, SRET, URET, ECALL, CSR_WRITE, CSR_READ, CSR_SET, CSR_CLEAR,
// LSU functions

20
src/alu.sv
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@ -59,8 +59,7 @@ module alu
// COMPARATOR OPs
EQ, NE,
GEU, LTU,
GES, LTS,
SLETS, SLETU: adder_op_b_negate = 1'b1;
GES, LTS: adder_op_b_negate = 1'b1;
default: ;
endcase
@ -147,7 +146,9 @@ module alu
cmp_signed = 1'b0;
unique case (operator_i)
GES, LTS: begin
GES,
LTS,
SLTS: begin
cmp_signed = 1'b1;
end
@ -181,11 +182,9 @@ module alu
unique case (operator_i)
EQ: cmp_result = is_equal;
NE: cmp_result = (~is_equal);
// GTS, GTU: cmp_result = is_greater_equal && (~is_equal);
GES, GEU: cmp_result = is_greater_equal;
LTS, LTU: cmp_result = (~is_greater_equal);
// LES, LEU: cmp_result = (~is_greater_equal) || is_equal;
LTS, SLTS,
LTU, SLTU: cmp_result = (~is_greater_equal);
default: ;
endcase
end
@ -217,9 +216,10 @@ module alu
SRLW, SRAW: result_o = {{32{shift_result32[31]}}, shift_result32[31:0]};
// Comparison Operations
EQ, NE,
LTU, GEU,
GES, LTS : result_o = {63'b0, cmp_result};
EQ, NE,
GEU, LTU,
LTS, GES,
SLTS, SLTU: result_o = {63'b0, cmp_result};
default: ; // default case to suppress unique warning
endcase