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[rtl] Disable definition of unused instructions

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The parameters are not used as the instructions are not yet widely
supported.
Keep definitions so they can be easily activated later.

Tracked in issue lowrisc/ibex#1228
This commit is contained in:
Tobias Wölfel 2021-01-09 14:54:39 +01:00 • committed by Tobias Wölfel
parent 90258b6d07
commit 3371732f94
1 changed files with 5 additions and 2 deletions
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7
rtl/ibex_tracer_pkg.sv
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@ -80,10 +80,13 @@ parameter logic [31:0] INSN_CTZ = { 12'b011000000001, 5'h?, 3'b001, 5'h?, {OPC
parameter logic [31:0] INSN_PCNT = { 12'b011000000010, 5'h?, 3'b001, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SEXTB = { 12'b011000000100, 5'h?, 3'b001, 5'h?, {OPCODE_OP_IMM} };
parameter logic [31:0] INSN_SEXTH = { 12'b011000000101, 5'h?, 3'b001, 5'h?, {OPCODE_OP_IMM} };
// The ZEXT.B and ZEXT.H pseudo-instructions are currently not emitted by the tracer due to a lack
// of support in the LLVM and GCC toolchains. Enabling this functionality when the time is right is
// tracked in https://github.com/lowRISC/ibex/issues/1228
// sext -- pseudoinstruction: andi rd, rs 255
parameter logic [31:0] INSN_ZEXTB = { 4'b0000, 8'b11111111, 5'h?, 3'b111, 5'h?, {OPCODE_OP_IMM} };
// parameter logic [31:0] INSN_ZEXTB = { 4'b0000, 8'b11111111, 5'h?, 3'b111, 5'h?, {OPCODE_OP_IMM} };
// sext -- pseudoinstruction: pack rd, rs zero
parameter logic [31:0] INSN_ZEXTH = { 7'b0000100, 5'b00000, 5'h?, 3'b100, 5'h?, {OPCODE_OP} };
// parameter logic [31:0] INSN_ZEXTH = { 7'b0000100, 5'b00000, 5'h?, 3'b100, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SLO = { 7'b0010000, 10'h?, 3'b001, 5'h?, {OPCODE_OP} };
parameter logic [31:0] INSN_SRO = { 7'b0010000, 10'h?, 3'b101, 5'h?, {OPCODE_OP} };