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-rw-r--r--include/bytecode/bytecode.h42
1 files changed, 38 insertions, 4 deletions
diff --git a/include/bytecode/bytecode.h b/include/bytecode/bytecode.h
index e5a70e9..600c9f2 100644
--- a/include/bytecode/bytecode.h
+++ b/include/bytecode/bytecode.h
@@ -8,12 +8,46 @@
#include <setjmp.h>
+/*doc(Opcode)
+ # Opcode
+ Variable length opcodes. Sizes range from 1 to 4 bytes.
+ # Instruction formats
+ Instructions can be in 6 different formats:
+ 1. 1 byte: Opcode
+ 2. 2 bytes: Opcode + register
+ 3. 3 bytes: Opcode + register + register
+ 4. 3 bytes:\
+ 4.1 Opcode + intermediate\
+ 4.2 Opcode + data\
+ 4.3 Opcode + index\
+ 4.4 Opcode + offset
+ 5. 4 bytes: Opcode + register + register + register
+ 6. 4 bytes: Opcode + register + offset
+*/
typedef enum {
- NOP /* To allow hot-patching */
-
-} BytecodeInstruction;
+ AMAL_OP_NOP, /* No operation. This can be used for patching */
+ AMAL_OP_SETZ, /* setz reg - Set register value to 0 */
+ AMAL_OP_MOV, /* mov dst, src - move src register to dst register */
+ AMAL_OP_MOVI, /* movi dst, src - move src intermediate to dst register */
+ AMAL_OP_MOVD, /* movd dst, src - move src data to dst register */
+ AMAL_OP_ADD, /* add dst, reg1, reg2 */
+ AMAL_OP_SUB, /* sub dst, reg1, reg2 */
+ AMAL_OP_MUL, /* mul dst, reg1, reg2 */
+ AMAL_OP_DIV, /* div dst, reg1, reg2 */
+ AMAL_OP_PUSH, /* push reg - Push register onto stack */
+ AMAL_OP_PUSHI, /* pushi int - Push intermediate onto stack */
+ AMAL_OP_PUSHD, /* pushd data - Push data onto stack */
+ AMAL_OP_CALL, /* call fi - Call a function using function index (fi). fi is u16 */
+ AMAL_OP_CALLR, /* callr reg - Call a function using a register. Used for function pointers */
+ AMAL_OP_CMP, /* cmp dst, reg1, reg2 - Set dst to 1 if reg1 equals reg2, otherwise set it to 0 */
+ AMAL_OP_JZ, /* jz reg, offset - jump to offset if reg is zero. offset is i16 */
+ AMAL_OP_JMP, /* jmp offset - unconditional jump to offset. offset is i16 */
+ AMAL_OP_RET, /* ret */
+ AMAL_OP_FUNC_START, /* func_start */
+ AMAL_OP_FUNC_END /* func_end */
+} AmalOpcode;
-typedef u8 BytecodeInstructionType;
+typedef u8 AmalOpcodeType;
typedef struct {
Buffer/*<instruction data>*/ instructions;