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| author | David Rubin <daviru007@icloud.com> | 2024-04-16 16:39:31 -0700 |
|---|---|---|
| committer | David Rubin <daviru007@icloud.com> | 2024-05-11 02:17:24 -0700 |
| commit | a30af172e8dc360cb0a71a5c4dfd904120555715 (patch) | |
| tree | e43bb564776492b6fa18187b4a379a82be5cdbb1 /src/arch/riscv64/Encoding.zig | |
| parent | a615fbc1f8330e455d02fdda5c6de257b0cde7f4 (diff) | |
| download | zig-a30af172e8dc360cb0a71a5c4dfd904120555715.tar.gz zig-a30af172e8dc360cb0a71a5c4dfd904120555715.zip | |
riscv: math progress
Diffstat (limited to 'src/arch/riscv64/Encoding.zig')
| -rw-r--r-- | src/arch/riscv64/Encoding.zig | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/arch/riscv64/Encoding.zig b/src/arch/riscv64/Encoding.zig index c23ba10d9b..7953bb0cca 100644 --- a/src/arch/riscv64/Encoding.zig +++ b/src/arch/riscv64/Encoding.zig @@ -16,6 +16,7 @@ pub const Mnemonic = enum { andi, slli, srli, + srai, addi, jalr, @@ -69,6 +70,7 @@ pub const Mnemonic = enum { .jalr => .{ .opcode = 0b1100111, .funct3 = 0b000, .funct7 = null }, .slli => .{ .opcode = 0b0010011, .funct3 = 0b001, .funct7 = null }, .srli => .{ .opcode = 0b0010011, .funct3 = 0b101, .funct7 = null }, + .srai => .{ .opcode = 0b0010011, .funct3 = 0b101, .funct7 = null, .offset = 1 << 10 }, .lui => .{ .opcode = 0b0110111, .funct3 = null, .funct7 = null }, @@ -123,6 +125,7 @@ pub const InstEnc = enum { .andi, .slli, .srli, + .srai, => .I, .lui, @@ -299,7 +302,7 @@ pub const Data = union(InstEnc) { .I = .{ .rd = ops[0].reg.id(), .rs1 = ops[1].reg.id(), - .imm0_11 = ops[2].imm.asBits(u12), + .imm0_11 = ops[2].imm.asBits(u12) + enc.offset, .opcode = enc.opcode, .funct3 = enc.funct3.?, @@ -374,6 +377,7 @@ const Enc = struct { opcode: u7, funct3: ?u3, funct7: ?u7, + offset: u12 = 0, }; fn verifyOps(mnem: Mnemonic, ops: []const Operand) bool { |