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- /* Copyright (C) 2014-2015 Ben Kurtovic <ben.kurtovic@gmail.com>
- Released under the terms of the MIT License. See LICENSE for details. */
-
- #include "instructions.h"
- #include "inst_support.h"
-
- /* Instruction parser functions */
-
- INST_FUNC(adc)
- {
- INST_TAKES_ARGS(2, 2)
- INST_FORCE_TYPE(0, AT_REGISTER)
- switch (INST_REG(0)) {
- case REG_A:
- switch (INST_TYPE(1)) {
- case AT_REGISTER:
- switch (INST_REG(1)) {
- INST_HANDLE_MAIN_8_BIT_REGS(0x88)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- case AT_IMMEDIATE:
- INST_CHECK_IMM(1, IMM_U8)
- INST_RETURN(2, 0xCE, INST_IMM(1).uval)
- case AT_INDIRECT:
- INST_INDIRECT_HL_ONLY(1)
- INST_RETURN(1, 0x8E)
- case AT_INDEXED:
- INST_RETURN(3, INST_INDEX_BYTES(1, 0x8E))
- default:
- INST_ERROR(ARG1_TYPE)
- }
- case REG_HL:
- INST_FORCE_TYPE(1, AT_REGISTER)
- switch (INST_REG(1)) {
- case REG_BC: INST_RETURN(2, 0xED, 0x4A)
- case REG_DE: INST_RETURN(2, 0xED, 0x5A)
- case REG_HL: INST_RETURN(2, 0xED, 0x6A)
- case REG_SP: INST_RETURN(2, 0xED, 0x7A)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- default:
- INST_ERROR(ARG0_TYPE)
- }
- }
-
- INST_FUNC(add)
- {
- INST_TAKES_ARGS(2, 2)
- INST_FORCE_TYPE(0, AT_REGISTER)
- switch (INST_REG(0)) {
- case REG_A:
- switch (INST_TYPE(1)) {
- case AT_REGISTER:
- switch (INST_REG(1)) {
- INST_HANDLE_MAIN_8_BIT_REGS(0x80)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- case AT_IMMEDIATE:
- INST_CHECK_IMM(1, IMM_U8)
- INST_RETURN(2, 0xC6, INST_IMM(1).uval)
- case AT_INDIRECT:
- INST_INDIRECT_HL_ONLY(1)
- INST_RETURN(1, 0x86)
- case AT_INDEXED:
- INST_RETURN(3, INST_INDEX_BYTES(1, 0x86))
- default:
- INST_ERROR(ARG1_TYPE)
- }
- case REG_HL:
- INST_FORCE_TYPE(1, AT_REGISTER)
- switch (INST_REG(1)) {
- case REG_BC: INST_RETURN(1, 0x09)
- case REG_DE: INST_RETURN(1, 0x19)
- case REG_HL: INST_RETURN(1, 0x29)
- case REG_SP: INST_RETURN(1, 0x39)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- case REG_IX:
- case REG_IY:
- INST_FORCE_TYPE(1, AT_REGISTER)
- switch (INST_REG(1)) {
- case REG_BC: INST_RETURN(2, INST_INDEX_PREFIX(1), 0x09)
- case REG_DE: INST_RETURN(2, INST_INDEX_PREFIX(1), 0x19)
- case REG_IX:
- case REG_IY:
- if (INST_REG(0) != INST_REG(1))
- INST_ERROR(ARG1_BAD_REG)
- INST_RETURN(2, INST_INDEX_PREFIX(1), 0x29)
- case REG_SP: INST_RETURN(2, INST_INDEX_PREFIX(1), 0x39)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- default:
- INST_ERROR(ARG0_TYPE)
- }
- }
-
- INST_FUNC(and)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(bit)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(call)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(ccf)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x3F)
- }
-
- INST_FUNC(cp)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(cpd)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA9)
- }
-
- INST_FUNC(cpdr)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB9)
- }
-
- INST_FUNC(cpi)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA1)
- }
-
- INST_FUNC(cpir)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB1)
- }
-
- INST_FUNC(cpl)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x2F)
- }
-
- INST_FUNC(daa)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x27)
- }
-
- INST_FUNC(dec)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(di)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0xF3)
- }
-
- INST_FUNC(djnz)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(ei)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0xFB)
- }
-
- INST_FUNC(ex)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(exx)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0xD9)
- }
-
- INST_FUNC(halt)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x76)
- }
-
- INST_FUNC(im)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(in)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(inc)
- {
- INST_TAKES_ARGS(1, 1)
- switch (INST_TYPE(0)) {
- case AT_REGISTER:
- switch (INST_REG(0)) {
- case REG_A: INST_RETURN(1, 0x3C)
- case REG_B: INST_RETURN(1, 0x04)
- case REG_C: INST_RETURN(1, 0x0C)
- case REG_D: INST_RETURN(1, 0x14)
- case REG_E: INST_RETURN(1, 0x1C)
- case REG_H: INST_RETURN(1, 0x24)
- case REG_L: INST_RETURN(1, 0x2C)
- case REG_BC: INST_RETURN(1, 0x03)
- case REG_DE: INST_RETURN(1, 0x13)
- case REG_HL: INST_RETURN(1, 0x23)
- case REG_SP: INST_RETURN(1, 0x33)
- case REG_IX: INST_RETURN(2, 0xDD, 0x23)
- case REG_IY: INST_RETURN(2, 0xFD, 0x23)
- case REG_IXH: INST_RETURN(2, 0xDD, 0x2C)
- case REG_IXL: INST_RETURN(2, 0xFD, 0x2C)
- case REG_IYH: INST_RETURN(2, 0xDD, 0x2C)
- case REG_IYL: INST_RETURN(2, 0xFD, 0x2C)
- default: INST_ERROR(ARG0_BAD_REG)
- }
- case AT_INDIRECT:
- INST_INDIRECT_HL_ONLY(0)
- INST_RETURN(1, 0x34)
- case AT_INDEXED:
- INST_RETURN(3, INST_INDEX_BYTES(0, 0x34))
- default:
- INST_ERROR(ARG0_TYPE)
- }
- }
-
- INST_FUNC(ind)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xAA)
- }
-
- INST_FUNC(indr)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xBA)
- }
-
- INST_FUNC(ini)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA2)
- }
-
- INST_FUNC(inir)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB2)
- }
-
- INST_FUNC(jp)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(jr)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(ld)
- {
- uint8_t base;
- INST_TAKES_ARGS(2, 2)
- switch (INST_TYPE(0)) {
- case AT_REGISTER:
- switch (INST_REG(0)) {
- case REG_A:
- switch (INST_TYPE(1)) {
- case AT_REGISTER:
- switch (INST_REG(1)) {
- INST_HANDLE_MAIN_8_BIT_REGS(0x78)
- case REG_I: INST_RETURN(2, 0xED, 0x57)
- case REG_R: INST_RETURN(2, 0xED, 0x5F)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- case AT_IMMEDIATE:
- INST_CHECK_IMM(1, IMM_U8)
- INST_RETURN(2, 0x3E, INST_IMM(1).uval)
- case AT_INDIRECT:
- switch (INST_INDIRECT(1).type) {
- case AT_REGISTER:
- switch (INST_INDIRECT(1).addr.reg) {
- case REG_BC: INST_RETURN(1, 0x0A)
- case REG_DE: INST_RETURN(1, 0x1A)
- case REG_HL: INST_RETURN(1, 0x7E)
- default: INST_ERROR(ARG0_BAD_REG)
- }
- case AT_IMMEDIATE:
- INST_RETURN(3, 0x3A, INST_INDIRECT_IMM(1))
- case AT_LABEL:
- INST_RETURN_INDIRECT_LABEL(1, 3, 0x3A)
- default:
- INST_ERROR(ARG1_TYPE)
- }
- case AT_INDEXED:
- INST_RETURN(3, INST_INDEX_BYTES(1, 0x7E))
- default:
- INST_ERROR(ARG1_TYPE)
- }
- case REG_B:
- base = 0x00;
- case REG_C:
- base = 0x08;
- case REG_D:
- base = 0x10;
- case REG_E:
- base = 0x18;
- switch (INST_TYPE(1)) {
- case AT_REGISTER:
- switch (INST_REG(1)) {
- INST_HANDLE_MAIN_8_BIT_REGS(base + 0x40)
- default: INST_ERROR(ARG1_BAD_REG)
- }
- case AT_IMMEDIATE:
- INST_CHECK_IMM(1, IMM_U8)
- INST_RETURN(2, base + 0x06, INST_IMM(1).uval)
- case AT_INDIRECT:
- INST_INDIRECT_HL_ONLY(1)
- INST_RETURN(1, base + 0x46)
- case AT_INDEXED:
- INST_RETURN(3, INST_INDEX_BYTES(1, base + 0x46))
- default:
- INST_ERROR(ARG1_TYPE)
- }
- case REG_H: // TODO (11 cases)
- case REG_L: // TODO (11 cases)
- case REG_I:
- INST_REG_ONLY(1, REG_A)
- INST_RETURN(2, 0xED, 0x47)
- case REG_R:
- INST_REG_ONLY(1, REG_A)
- INST_RETURN(2, 0xED, 0x4F)
- case REG_BC: // TODO ( 2 cases)
- case REG_DE: // TODO ( 2 cases)
- case REG_HL: // TODO ( 3 cases)
- case REG_IX: // TODO ( 2 cases)
- case REG_IY: // TODO ( 2 cases)
- case REG_SP: // TODO ( 5 cases)
- case REG_IXH: // TODO ( 8 cases)
- case REG_IXL: // TODO ( 8 cases)
- case REG_IYH: // TODO ( 8 cases)
- case REG_IYL: // TODO ( 8 cases)
- default: INST_ERROR(ARG0_BAD_REG)
- }
- case AT_INDIRECT:
- switch (INST_INDIRECT(0).type) {
- case AT_REGISTER:
- switch (INST_INDIRECT(0).addr.reg) {
- case REG_BC: // TODO (1 case )
- case REG_DE: // TODO (1 case )
- case REG_HL: // TODO (8 cases)
- default: INST_ERROR(ARG0_BAD_REG)
- }
- case AT_IMMEDIATE:
- // TODO (8 cases)
- case AT_LABEL:
- // TODO (same 8 cases)
- default:
- INST_ERROR(ARG0_TYPE)
- }
- case AT_INDEXED:
- // TODO (16 cases)
- default:
- INST_ERROR(ARG0_TYPE)
- }
- }
-
- INST_FUNC(ldd)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA8)
- }
-
- INST_FUNC(lddr)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB8)
- }
-
- INST_FUNC(ldi)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA0)
- }
-
- INST_FUNC(ldir)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB0)
- }
-
- INST_FUNC(neg)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(nop)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x00)
- }
-
- INST_FUNC(or)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(otdr)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xBB)
- }
-
- INST_FUNC(otir)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xB3)
- }
-
- INST_FUNC(out)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(outd)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xAB)
- }
-
- INST_FUNC(outi)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0xA3)
- }
-
- INST_FUNC(pop)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(push)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(res)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(ret)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(reti)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0x4D)
- }
-
- INST_FUNC(retn)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0x45)
- }
-
- INST_FUNC(rl)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(rla)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x17)
- }
-
- INST_FUNC(rlc)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(rlca)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x07)
- }
-
- INST_FUNC(rld)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(2, 0xED, 0x6F)
- }
-
- INST_FUNC(rr)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(rra)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x1F)
- }
-
- INST_FUNC(rrc)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(rrca)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x0F)
- }
-
- INST_FUNC(rrd)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(rst)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sbc)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(scf)
- {
- INST_TAKES_NO_ARGS
- INST_RETURN(1, 0x37)
- }
-
- INST_FUNC(set)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sl1)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sla)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sll)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sls)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sra)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(srl)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(sub)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- INST_FUNC(xor)
- {
- // TODO
- INST_TAKES_NO_ARGS
- INST_ERROR(ARG_SYNTAX)
- INST_RETURN(1, 0xFF)
- }
-
- /*
- Return the relevant ASMInstParser function for a given mnemonic.
-
- NULL is returned if the mnemonic is not known.
- */
- ASMInstParser get_inst_parser(char mstr[MAX_MNEMONIC_SIZE])
- {
- // Exploit the fact that we can store the entire mnemonic string as a
- // single 32-bit value to do fast lookups:
- uint32_t key = (mstr[0] << 24) + (mstr[1] << 16) + (mstr[2] << 8) + mstr[3];
-
- HANDLE(adc)
- HANDLE(add)
- HANDLE(and)
- HANDLE(bit)
- HANDLE(call)
- HANDLE(ccf)
- HANDLE(cp)
- HANDLE(cpd)
- HANDLE(cpdr)
- HANDLE(cpi)
- HANDLE(cpir)
- HANDLE(cpl)
- HANDLE(daa)
- HANDLE(dec)
- HANDLE(di)
- HANDLE(djnz)
- HANDLE(ei)
- HANDLE(ex)
- HANDLE(exx)
- HANDLE(halt)
- HANDLE(im)
- HANDLE(in)
- HANDLE(inc)
- HANDLE(ind)
- HANDLE(indr)
- HANDLE(ini)
- HANDLE(inir)
- HANDLE(jp)
- HANDLE(jr)
- HANDLE(ld)
- HANDLE(ldd)
- HANDLE(lddr)
- HANDLE(ldi)
- HANDLE(ldir)
- HANDLE(neg)
- HANDLE(nop)
- HANDLE(or)
- HANDLE(otdr)
- HANDLE(otir)
- HANDLE(out)
- HANDLE(outd)
- HANDLE(outi)
- HANDLE(pop)
- HANDLE(push)
- HANDLE(res)
- HANDLE(ret)
- HANDLE(reti)
- HANDLE(retn)
- HANDLE(rl)
- HANDLE(rla)
- HANDLE(rlc)
- HANDLE(rlca)
- HANDLE(rld)
- HANDLE(rr)
- HANDLE(rra)
- HANDLE(rrc)
- HANDLE(rrca)
- HANDLE(rrd)
- HANDLE(rst)
- HANDLE(sbc)
- HANDLE(scf)
- HANDLE(set)
- HANDLE(sl1)
- HANDLE(sla)
- HANDLE(sll)
- HANDLE(sls)
- HANDLE(sra)
- HANDLE(srl)
- HANDLE(sub)
- HANDLE(xor)
-
- return NULL;
- }
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