1 files changed, 58 insertions, 0 deletions
diff --git a/src/x86.h b/src/x86.h
new file mode 100644
index 0000000..484e5c2
--- /dev/null
+++ b/src/x86.h
@@ -0,0 +1,58 @@
+//|_   _   _.     _  ._  |_   _.  _ |
+//| | (/_ (_| \/ (/_ | | | | (_| (_ |<
+
+#pragma once
+#include "typedef.h"
+
+enum X86Regs_t : U8 {
+  eax = 0,
+  ecx,
+  edx,
+  ebx,
+  esp,
+  ebp,
+  esi,
+  edi
+};
+
+enum X64Regs_t : U8 {
+  rax = 0,
+  rcx,
+  rdx,
+  rbx,
+  rsp,
+  rbp,
+  rsi,
+  rdi,
+  r8,
+  r9,
+  r10,
+  r11,
+  r12,
+  r13,
+  r14,
+  r15
+};
+
+union REG64 {
+  REG64() = default;
+  REG64( U64 x ) : u64( x ) {}
+  REG64( U32 x ) { u64 = x; }
+
+  REG64( I64 x ) : u64( *(U64*)( &x ) ) {}
+  REG64( I32 x ) { u64 = *(U32*)( &x ); } 
+  
+  U32 u32[2];
+  U64 u64;
+};
+
+constexpr U32 x86_encode_mov_imm32( U32 reg ) { return ( 0xb8 + reg ); }
+constexpr U32 x86_encode_push_reg( U32 reg ) { return 0x50 | ( reg & 7 ); }
+constexpr U32 x86_encoded_pop_reg( U32 reg ) { return 0x58 | ( reg & 7 ); }
+
+enum X86Instructions_t : U8 {
+  RET_NEAR = 0xc3,
+  RET_FAR = 0xcb,
+  RET_NEAR_IMM16 = 0xc2,
+  RET_FAR_IMM16 = 0xca,
+};
+\ No newline at end of file