ZS-86: Dealt with sledding and KS-asm issues

Large ints as constant operands are weird in ks-asm.  Need to use
positive value, in hex, for less than max-signed-int, and negative
hex values for values between max-signed-int and max-unsigned-int.

src/pinner_x86.cpp

@@ -9,6 +9,7 @@
 #include <iostream>   // std::cout
 #include <string>     // std::string, std::to_string
 #include <fstream>
+#include <irdb-util>
 
 namespace zipr
 {
@@ -25,6 +26,27 @@ static int ceildiv(int a, int b)
         return  (a+b-1)/b;
 }
 
+
+//
+// Convert a 32-bit integer into a string that keystone will accept
+// without indicating an overflow.
+// return a string
+inline string to_ks_string(uint32_t val) 
+{
+	// Ks is very funky about what integers it accepts.
+	// 31-bit integers work in hex
+	if(val <= 0x7fffffff) 
+	{
+		return "0x"+to_hex_string(val);
+	}
+	// and negative 31-bit integers work in hex.
+	else
+	{
+		return "-0x"+to_hex_string(-val);
+	}
+}
+
+
 #define ALLOF(a) begin(a),end(a)
 
 ZiprPinnerX86_t::ZiprPinnerX86_t(Zipr_SDK::Zipr_t* p_parent) : 
@@ -534,7 +556,7 @@ Instruction_t* ZiprPinnerX86_t::Emit68Sled(RangeAddress_t addr, Sled_t sled, Ins
 
 	for(int i=0;i<number_of_pushed_values;i++)
 	{
-		string cmp_str="cmp "+decoration+" ["+stack_reg+"+ "+to_string(i*stack_push_size)+"], "+to_string(pushed_values[i]);
+		string cmp_str="cmp "+decoration+" ["+stack_reg+"+ "+to_string(i*stack_push_size)+"], "+to_ks_string(pushed_values[i]);
 		Instruction_t* cmp=addNewAssembly(m_firp, nullptr, cmp_str); 
 		Instruction_t *jne=addNewAssembly(m_firp, nullptr, "jne 0"); 
 		cmp->setFallthrough(jne);