From 7d0bda78ce92f8c9cba4ec3b3e55faee79f3b8b7 Mon Sep 17 00:00:00 2001
From: tuz358 <orca00358@gmail.com>
Date: Tue, 13 Mar 2018 11:04:09 +0900
Subject: [PATCH] Add sbb_eax_imm32(0x1d) instruction

---
 include/instructions.h | 1 +
 instructions.cpp       | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/include/instructions.h b/include/instructions.h
index 05c1e7d..f02828a 100644
--- a/include/instructions.h
+++ b/include/instructions.h
@@ -39,6 +39,7 @@ public:
   void adc_eax_imm32(); // 0x15
   void sbb_rm32_r32();  // 0x19
   void sbb_r32_rm32();  // 0x1b
+  void sbb_eax_imm32(); // 0x1d
   void and_rm32_r32();  // 0x21
   void and_r32_rm32();  // 0x23
   void and_eax_imm32(); // 0x25
diff --git a/instructions.cpp b/instructions.cpp
index 7e3a85c..28a2e32 100644
--- a/instructions.cpp
+++ b/instructions.cpp
@@ -31,6 +31,7 @@ void Instructions::init_instructions(){
   this->instructions[0x15] = &Instructions::adc_eax_imm32;
   this->instructions[0x19] = &Instructions::sbb_rm32_r32;
   this->instructions[0x1b] = &Instructions::sbb_r32_rm32;
+  this->instructions[0x1d] = &Instructions::sbb_eax_imm32;  
   this->instructions[0x21] = &Instructions::and_rm32_r32;
   this->instructions[0x23] = &Instructions::and_r32_rm32;
   this->instructions[0x25] = &Instructions::and_eax_imm32;
@@ -543,6 +544,13 @@ void Instructions::sbb_r32_rm32(){
   }
 }
 
+void Instructions::sbb_eax_imm32(){
+  this->eip++;
+  uint32_t imm32 = memory.read_uint32(this->eip);
+  imm32 = swap_endian32(imm32);
+  this->registers[0] -= imm32 + get_flag(CF);
+}
+
 void Instructions::and_rm32_r32(){
   //printf("and_rm32_r32 called.\n");
   uint32_t addr, dst, imm32;