diff options
Diffstat (limited to 'include/bytecode')
| -rw-r--r-- | include/bytecode/bytecode.h | 66 |
1 files changed, 35 insertions, 31 deletions
diff --git a/include/bytecode/bytecode.h b/include/bytecode/bytecode.h index adad291..1e4c35d 100644 --- a/include/bytecode/bytecode.h +++ b/include/bytecode/bytecode.h @@ -9,48 +9,52 @@ #include <setjmp.h> /*doc(Opcode) - Variable length opcodes. Sizes range from 1 to 4 bytes. + Variable length opcodes. Sizes range from 1 to 5 bytes. # Instruction formats Instructions can be in 7 different formats: 1. 1 byte: Opcode(u8) - 2. 2 bytes: Opcode(u8) + register(u8) - 3. 3 bytes: Opcode(u8) + register(u8) + register(u8) + 2. 2 bytes: Opcode(u8) + register(i8) + 3. 3 bytes: Opcode(u8) + register(i8) + register(i8) 4. 3 bytes:\ 4.1 Opcode(u8) + intermediate(u16)\ 4.2 Opcode(u8) + data(u16)\ 4.3 Opcode(u8) + offset(i16)\ - 4.4 Opcode(u8) + num_reg(u16)\ - 4.5 Opcode(u8) + register(u8) + num_args(u8) - 5. 4 bytes: Opcode(u8) + register(u8) + register(u8) + register(u8) + 4.4 Opcode(u8) + register(i8) + num_args(u8) + 5. 4 bytes: Opcode(u8) + register(i8) + register(i8) + register(i8) 6. 4 bytes:\ - 6.1 Opcode(u8) + register(u8) + offset(i16)\ - 6.2 Opcode(u8) + register(u8) + intermediate(u16)\ - 6.3 Opcode(u8) + register(u8) + data(u16) - 7. 4 bytes: Opcode(u8) + index(u16) + num_args(u8) + 6.1 Opcode(u8) + register(i8) + offset(i16)\ + 6.2 Opcode(u8) + register(i8) + intermediate(u16)\ + 6.3 Opcode(u8) + register(i8) + data(u16)\ + 6.4 Opcode(u8) + num_param_reg(u8) + num_local_var_reg(u16) + 7. 5 bytes: Opcode(u8) + index(u16) + num_args(u8) + register(i8) + # Registers + Registers have a range of 128. Local variables start from register 0 and increment while parameters start from -1 + and decrement. */ typedef enum { AMAL_OP_NOP, /* No operation (do nothing). This can be used for patching code */ - 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 - Add reg1 and reg2 and put the result in dst */ - AMAL_OP_SUB, /* sub dst, reg1, reg2 - Substract reg2 from reg1 and put the result in dst */ - AMAL_OP_IMUL, /* imul dst, reg1, reg2 - Signed multiplication */ - AMAL_OP_MUL, /* mul dst, reg1, reg2 - Unsigned multiplication */ - AMAL_OP_IDIV, /* idiv dst, reg1, reg2 - Signed division */ - AMAL_OP_DIV, /* div dst, reg1, reg2 - Unsigned division */ - 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, num_args - Call a function using function index (fi) and num_args arguments. fi is u16 and num_args is u8 */ - AMAL_OP_CALLR, /* callr reg, num_args - Call a function using a register. Used for function pointers. num_args is u8 */ - 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 reg - Return from the function with reg result */ - AMAL_OP_FUNC_START, /* func_start num_reg - Start of a function which has num_reg registers allocated. num_reg is a u16 */ - AMAL_OP_FUNC_END /* func_end - End of a function. Implementation should do a ret here */ + 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 - Add reg1 and reg2 and put the result in dst */ + AMAL_OP_SUB, /* sub dst, reg1, reg2 - Substract reg2 from reg1 and put the result in dst */ + AMAL_OP_IMUL, /* imul dst, reg1, reg2 - Signed multiplication */ + AMAL_OP_MUL, /* mul dst, reg1, reg2 - Unsigned multiplication */ + AMAL_OP_IDIV, /* idiv dst, reg1, reg2 - Signed division */ + AMAL_OP_DIV, /* div dst, reg1, reg2 - Unsigned division */ + 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, num_args, dst - Call a function using function index (fi) and num_args arguments. The result is stored in register dst. fi is u16 and num_args is u8 */ + AMAL_OP_CALLR, /* callr reg, num_args - Call a function using a register. Used for function pointers. num_args is u8 */ + AMAL_OP_CALLE, /* calle efi, num_args, dst - Call an extern function using extern function index (efi) and num_args arguments. The result is stored in register dst. efi is u16 and num_args is u8 */ + 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 reg - Return from the function with reg result */ + AMAL_OP_FUNC_START, /* func_start num_param_reg, num_local_var_reg - Start of a function which has num_param_reg parameter registers allocated and num_local_var_reg local variable registers allocated. num_param_reg is u8 and num_local_var_reg is u16 */ + AMAL_OP_FUNC_END /* func_end - End of a function. Implementation should do a ret here */ } AmalOpcode; typedef u8 AmalOpcodeType; |