+ case 0x10: /* sex.b */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ signed char bv = cpu.asregs.regs[b];
+
+ MOXIE_TRACE_INSN ("sex.b");
+ cpu.asregs.regs[a] = (int) bv;
+ }
+ break;
+ case 0x11: /* sex.s */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ signed short bv = cpu.asregs.regs[b];
+
+ MOXIE_TRACE_INSN ("sex.s");
+ cpu.asregs.regs[a] = (int) bv;
+ }
+ break;
+ case 0x12: /* zex.b */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ signed char bv = cpu.asregs.regs[b];
+
+ MOXIE_TRACE_INSN ("zex.b");
+ cpu.asregs.regs[a] = (int) bv & 0xff;
+ }
+ break;
+ case 0x13: /* zex.s */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ signed short bv = cpu.asregs.regs[b];
+
+ MOXIE_TRACE_INSN ("zex.s");
+ cpu.asregs.regs[a] = (int) bv & 0xffff;
+ }
+ break;
+ case 0x14: /* umul.x */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ unsigned av = cpu.asregs.regs[a];
+ unsigned bv = cpu.asregs.regs[b];
+ unsigned long long r =
+ (unsigned long long) av * (unsigned long long) bv;
+
+ MOXIE_TRACE_INSN ("umul.x");
+ cpu.asregs.regs[a] = r >> 32;
+ }
+ break;
+ case 0x15: /* mul.x */
+ {
+ int a = (inst >> 4) & 0xf;
+ int b = inst & 0xf;
+ unsigned av = cpu.asregs.regs[a];
+ unsigned bv = cpu.asregs.regs[b];
+ signed long long r =
+ (signed long long) av * (signed long long) bv;
+
+ MOXIE_TRACE_INSN ("mul.x");
+ cpu.asregs.regs[a] = r >> 32;
+ }
+ break;