diff --git a/include/instructions.h b/include/instructions.h
index 1493371..581752e 100644
--- a/include/instructions.h
+++ b/include/instructions.h
@@ -91,6 +91,7 @@ public:
   void mov_ebp_imm32(); // 0xbd
   void mov_esi_imm32(); // 0xbe
   void mov_edi_imm32(); // 0xbf
+  void call_imm32();    // 0xe8
   void jmp_imm8();      // 0xeb
   void hlt();           // 0xf4
   void opcode_ff();     // 0xff
diff --git a/instructions.cpp b/instructions.cpp
index c5f8889..cb730e4 100644
--- a/instructions.cpp
+++ b/instructions.cpp
@@ -87,6 +87,7 @@ void Instructions::init_instructions(){
   this->instructions[0xbd] = &Instructions::mov_ebp_imm32;
   this->instructions[0xbe] = &Instructions::mov_esi_imm32;
   this->instructions[0xbf] = &Instructions::mov_edi_imm32;
+  this->instructions[0xe8] = &Instructions::call_imm32;
   this->instructions[0xeb] = &Instructions::jmp_imm8;
   this->instructions[0xf4] = &Instructions::hlt;
   this->instructions[0xff] = &Instructions::opcode_ff;
@@ -1062,6 +1063,19 @@ void Instructions::mov_edi_imm32(){
   this->eip += 4;
 }
 
+void Instructions::call_imm32(){
+  //printf("call_imm32 called.\n");
+
+  int32_t imm32 = memory.read_int32(this->eip);
+  imm32 = (int32_t)swap_endian32((uint32_t)imm32);
+  // push eip
+  this->registers[4] -= 4; // esp -= 4
+  memory.write_uint32(this->registers[4], this->eip);
+  // jmp imm32
+  this->eip += imm32;
+  this->eip += 4;
+}
+
 void Instructions::jmp_imm8() {
   //printf("jmp_imm8 called.\n");