feat(v5te): implement clz

src/arm/v5te.zig

@@ -19,6 +19,8 @@ pub const arm = struct {
 
     const cop = @import("cpu/arm/coprocessor.zig");
 
+    const clz = @import("cpu/arm/misc_instructions.zig").clz;
+
     /// Determine index into ARM InstrFn LUT
     pub fn idx(opcode: u32) u12 {
         // FIXME: omit these?
@@ -40,6 +42,8 @@ pub const arm = struct {
                 handler.* = switch (@as(u2, i >> 10)) {
                     0b00 => if (i == 0x121) blk: {
                         break :blk branchExchange(InstrFn);
+                    } else if (i == 0x161) blk: {
+                        break :blk clz(InstrFn);
                     } else if (i & 0xFCF == 0x009) blk: {
                         const A = i >> 5 & 1 == 1;
                         const S = i >> 4 & 1 == 1;