Add exception for hlt instruction

Author: mrexodia

python/icicle/Ghidra/Processors/x86/data/languages/ia.sinc

@@ -2728,7 +2728,8 @@ enterFrames: low5 is low5 { tmp:1 = low5; export tmp; }
 # as a NOP.  We treat it as a NOP as well.
 :FSETPM 	is vexMode=0 & byte=0xdb; byte=0xe4	{ } # 80287 set protected mode
 
-:HLT            is vexMode=0 & byte=0xf4                        { goto inst_start; }
+define pcodeop hlt;
+:HLT            is vexMode=0 & byte=0xf4                        { hlt(); }
 
 :IDIV rm8       is vexMode=0 & byte=0xf6;  rm8 & reg_opcode=7 ...           { rm8ext:2 = sext(rm8);
                                                   local quotient = AX s/ rm8ext;  # DE exception if quotient doesn't fit in AL

tests/hlt.py

@@ -0,0 +1,17 @@
+from icicle import *
+
+def hlt():
+    vm = Icicle("x86_64", jit=False, tracing=True)
+    page = 0x10000
+    vm.mem_map(page, 0x1000, MemoryProtection.ExecuteRead)
+    vm.mem_write(page, b"\xF4\xEB\xFE")
+    vm.reg_write("rip", page)
+    status = vm.step(1000)
+    print(status, vm.exception_code)
+    print(hex(vm.reg_read("rip")))
+
+def main():
+    hlt()
+
+if __name__ == "__main__":
+    main()