From 1e9699d1071857ce374ae90de7f2fb0204ac076c Mon Sep 17 00:00:00 2001
From: tuz358 <orca00358@gmail.com>
Date: Mon, 5 Mar 2018 17:55:39 +0900
Subject: [PATCH] Add mov_esp_imm32(0xbc) instruction

---
 include/instructions.h |  1 +
 instructions.cpp       | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/include/instructions.h b/include/instructions.h
index d8abfa2..bb83add 100644
--- a/include/instructions.h
+++ b/include/instructions.h
@@ -38,6 +38,7 @@ public:
   void mov_ecx_imm32(); // 0xb9
   void mov_edx_imm32(); // 0xba
   void mov_ebx_imm32(); // 0xbb
+  void mov_esp_imm32(); // 0xbc
   void jmp_imm8();      // 0xeb
   void hlt();           // 0xf4
   void opcode_ff();     // 0xff
diff --git a/instructions.cpp b/instructions.cpp
index b0e04e6..2e5919e 100644
--- a/instructions.cpp
+++ b/instructions.cpp
@@ -31,6 +31,7 @@ void Instructions::init_instructions(){
   this->instructions[0xb9] = &Instructions::mov_ecx_imm32;
   this->instructions[0xba] = &Instructions::mov_edx_imm32;
   this->instructions[0xbb] = &Instructions::mov_ebx_imm32;
+  this->instructions[0xbc] = &Instructions::mov_esp_imm32;
   this->instructions[0xeb] = &Instructions::jmp_imm8;
   this->instructions[0xf4] = &Instructions::hlt;
   this->instructions[0xff] = &Instructions::opcode_ff;
@@ -270,6 +271,15 @@ void Instructions::mov_ebx_imm32(){
   this->eip += 4;
 }
 
+void Instructions::mov_edx_imm32(){
+  //printf("mov_esp_imm32 called.\n");
+
+  uint32_t imm32 = memory.read_uint32(this->eip);
+  imm32 = swap_endian32(imm32);
+  this->registers[4] = imm32;
+  this->eip += 4;
+}
+
 void Instructions::jmp_imm8() {
   //printf("jmp_imm8 called.\n");