first commit

src/instructions/instructions.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "../VM/VM.h"
+
+///@param program_pos position in vm->program next afrer opcode
+///@returns number of bytes read
+typedef i32 (*InstructionImplFunc_t)(VM* vm, size_t program_pos);
+
+typedef struct Instruction {
+    const char* name;
+    InstructionImplFunc_t implementation;
+} Instruction;
+
+#define Instruction_construct(NAME) {\
+    .name = #NAME, \
+    .implementation = NAME##_impl \
+}
+
+/// @brief get instruction info from table
+/// @param opcode any byte
+/// @return ptr to struct or NULL
+const Instruction* Instruction_getFromOpcode(u8 opcode);
+
+i32 NOP_impl(VM* vm, size_t pos);
+i32 PUSH_impl(VM* vm, size_t pos);
+i32 MOV_impl(VM* vm, size_t pos);
+i32 ADD_impl(VM* vm, size_t pos);
+i32 SUB_impl(VM* vm, size_t pos);
+i32 MUL_impl(VM* vm, size_t pos);
+i32 DIV_impl(VM* vm, size_t pos);
+i32 MOD_impl(VM* vm, size_t pos);
+i32 SYS_impl(VM* vm, size_t pos);
+i32 EXIT_impl(VM* vm, size_t pos);
+i32 JMP_impl(VM* vm, size_t pos);
+i32 CALL_impl(VM* vm, size_t pos);