From befde76cfa46c766e81f74eb5ac65d3dae2dde87 Mon Sep 17 00:00:00 2001
From: Amlal El Mahrouss <amlal@nekernel.org>
Date: Sat, 19 Apr 2025 17:33:26 +0200
Subject: dev, LibCompiler, tooling: refactor and separate components into
 modules (cppdrv, cxxdrv)

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>
---
 dev/LibCompiler/Backend/amd64.h | 58 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 dev/LibCompiler/Backend/amd64.h

(limited to 'dev/LibCompiler/Backend/amd64.h')

diff --git a/dev/LibCompiler/Backend/amd64.h b/dev/LibCompiler/Backend/amd64.h
new file mode 100644
index 0000000..8486b01
--- /dev/null
+++ b/dev/LibCompiler/Backend/amd64.h
@@ -0,0 +1,58 @@
+/* -------------------------------------------
+
+	Copyright (C) 2024-2025 Amlal EL Mahrous, all rights reserved
+
+------------------------------------------- */
+
+#pragma once
+
+#include <LibCompiler/Defines.h>
+
+// @brief AMD64 support.
+// @file Backend/amd64.hpp
+
+#define kAsmOpcodeDecl(__NAME, __OPCODE) {.fName = __NAME, .fOpcode = __OPCODE},
+
+typedef char	 i64_character_t;
+typedef uint8_t	 i64_byte_t;
+typedef uint16_t i64_hword_t;
+typedef uint32_t i64_word_t;
+
+#define kAsmRegisterPrefix "r"
+
+struct CpuOpcodeAMD64
+{
+	std::string fName;
+	i64_byte_t	fPrefixBytes[4];
+	i64_hword_t fOpcode;
+	i64_hword_t fModReg;
+	i64_word_t	fDisplacment;
+	i64_word_t	fImmediate;
+};
+
+/// these two are edge cases
+#define kAsmIntOpcode	 0xCC
+#define kasmIntOpcodeAlt 0xCD
+
+#define kAsmJumpOpcode			0x0F80
+#define kJumpLimit				30
+#define kJumpLimitStandard		0xE3
+#define kJumpLimitStandardLimit 0xEB
+
+inline std::vector<CpuOpcodeAMD64> kOpcodesAMD64 = {
+	kAsmOpcodeDecl("int", 0xCD)
+		kAsmOpcodeDecl("into", 0xCE)
+			kAsmOpcodeDecl("intd", 0xF1)
+				kAsmOpcodeDecl("int3", 0xC3)
+					kAsmOpcodeDecl("iret", 0xCF)
+						kAsmOpcodeDecl("retf", 0xCB)
+							kAsmOpcodeDecl("retn", 0xC3)
+								kAsmOpcodeDecl("ret", 0xC3)
+									kAsmOpcodeDecl("sti", 0xfb)
+										kAsmOpcodeDecl("cli", 0xfa)
+											kAsmOpcodeDecl("hlt", 0xf4)
+												kAsmOpcodeDecl("nop", 0x90)
+													kAsmOpcodeDecl("mov", 0x48)
+														kAsmOpcodeDecl("call", 0xFF)};
+
+#define kAsmRegisterLimit 16
-- 
cgit v1.2.3