1 files changed, 94 insertions, 0 deletions
diff --git a/include/CompilerKit/Detail/32x0.h b/include/CompilerKit/Detail/32x0.h
new file mode 100644
index 0000000..fc3e0e9
--- /dev/null
+++ b/include/CompilerKit/Detail/32x0.h
@@ -0,0 +1,94 @@
+/* ========================================
+
+  Copyright (C) 2024-2025 Amlal El Mahrouss, Licensed under the Apache 2.0 license
+
+======================================== */
+
+#pragma once
+
+#include <CompilerKit/Detail/Config.h>
+#include <vector>
+
+// @brief Open32x0 support.
+// @file Detail/32x0.h
+
+#define CK_ASM_OPCODE(__NAME, __OPCODE, __FUNCT3, __FUNCT7) \
+  {.fName = __NAME, .fOpcode = __OPCODE, .fFunct3 = __FUNCT3, .fFunct7 = __FUNCT7},
+
+#define kAsmImmediate 0x01
+#define kAsmSyscall 0x02
+#define kAsmJump 0x03
+#define kAsmNoArgs 0x04
+
+#define kAsmByte 0
+#define kAsmHWord 1
+#define kAsmWord 2
+
+struct CpuCode32x0 {
+  const char fName[32];
+  uint8_t    fOpcode;
+  uint8_t    fSize;
+  uint8_t    fFunct3;
+  uint8_t    fFunct7;
+};
+
+#define kAsmDWordStr ".dword" /* 64 bit */
+#define kAsmWordStr ".word"   /* 32-bit */
+#define kAsmHWordStr ".half"  /* 16-bit */
+#define kAsmByteStr ".byte"   /* 8-bit */
+
+inline std::vector<CpuCode32x0> kOpcodes32x0 = {
+    CK_ASM_OPCODE("nop", 0b0100011, 0b000, kAsmNoArgs)     // nothing to do. (1C)
+    CK_ASM_OPCODE("jmp", 0b1110011, 0b001, kAsmJump)       // jump to branch (2C)
+    CK_ASM_OPCODE("mov", 0b0100011, 0b101, kAsmImmediate)  // move registers (3C)
+    CK_ASM_OPCODE("psh", 0b0111011, 0b000, kAsmImmediate)  // push to sp (2C)
+    CK_ASM_OPCODE("pop", 0b0111011, 0b001, kAsmImmediate)  // pop from sp. (1C)
+    CK_ASM_OPCODE("lea", 0b0111011, 0b010,
+                  kAsmImmediate)  // setup stack and call, store address to CR (1C).
+    CK_ASM_OPCODE("ret", 0b0111011, 0b110,
+                  kAsmImmediate)                         // return from procedure (2C).
+    CK_ASM_OPCODE("uc", 0b0111111, 0b000, kAsmSyscall)   // user call (1C)
+    CK_ASM_OPCODE("kc", 0b0111111, 0b001, kAsmSyscall)   // kernel call (1C)
+    CK_ASM_OPCODE("int", 0b0111111, 0b010, kAsmSyscall)  // raise interrupt (1C)
+};
+
+// \brief 64x0 register prefix
+// example: r32, r0
+// r32 -> sp
+// r0 -> hw zero
+
+#define kAsmRegisterPrefix "r"
+#define kAsmRegisterLimit 16
+#define kAsmPcRegister 17
+#define kAsmCrRegister 18
+#define kAsmSpRegister 5
+
+/* return address register */
+#define kAsmRetRegister 19
+
+/////////////////////////////////////////////////////////////////////////////
+
+// SYSTEM CALL ADDRESSING
+
+// | OPCODE | FUNCT3 | FUNCT7 |              OFF                 |
+
+// IMMEDIATE ADDRESSING
+
+// | OPCODE | FUNCT3 | FUNCT7 | REG      |  OFF     |
+// | OPCODE | FUNCT3 | FUNCT7 | REG      |  OFF     |       REG      |
+// | OPCODE | FUNCT3 | FUNCT7 | REG      |  REG     |       OFF      |
+
+// REG TO REG ADDRESSING
+
+// | OPCODE | FUNCT3 | FUNCT7 | REG      |  REG2    |
+
+////////////////////////////////
+
+// LOAD/CALL INTERRUPTS
+
+// SET A HANDLER IN ADDRESS: TODO: find one
+// DISABLE INTERRUPTS
+// PROCESS INTERRUPT
+// ENABLE INTERRUPTS
+
+////////////////////////////////