-
João Magalhães authoredJoão Magalhães authored
inst.rs 62.81 KiB
use crate::cpu::Cpu;
pub const INSTRUCTIONS: [Instruction; 256] = [
// 0x0 opcodes
(nop, 4, "NOP"),
(ld_bc_u16, 12, "LD BC, u16"),
(ld_mbc_a, 8, "LD [BC], A"),
(inc_bc, 8, "INC BC"),
(inc_b, 4, "INC B"),
(dec_b, 4, "DEC B"),
(ld_b_u8, 8, "LD B, u8"),
(rlca, 4, "RLCA"),
(ld_mu16_sp, 20, "LD [u16], SP"),
(add_hl_bc, 8, "ADD HL, BC"),
(ld_a_mbc, 8, "LD A, [BC]"),
(dec_bc, 8, "DEC BC"),
(inc_c, 4, "INC C"),
(dec_c, 4, "DEC C"),
(ld_c_u8, 8, "LD C, u8"),
(rrca, 4, "RRCA"),
// 0x1 opcodes
(stop, 4, "STOP"),
(ld_de_u16, 12, "LD DE, u16"),
(ld_mde_a, 8, "LD [DE], A"),
(inc_de, 8, "INC DE"),
(inc_d, 4, "INC D"),
(dec_d, 4, "DEC D"),
(ld_d_u8, 8, "LD D, u8"),
(rla, 4, "RLA"),
(jr_i8, 12, "JR i8"),
(add_hl_de, 8, "ADD HL, DE"),
(ld_a_mde, 8, "LD A, [DE]"),
(dec_de, 8, "DEC DE"),
(inc_e, 4, "INC E"),
(dec_e, 4, "DEC E"),
(ld_e_u8, 8, "LD E, u8"),
(rra, 4, "RRA"),
// 0x2 opcodes
(jr_nz_i8, 8, "JR NZ, i8"),
(ld_hl_u16, 12, "LD HL, u16"),
(ld_mhli_a, 8, "LD [HL+], A"),
(inc_hl, 8, "INC HL"),
(inc_h, 4, "INC H"),
(dec_h, 4, "DEC H"),
(ld_h_u8, 8, "LD H, u8"),
(daa, 4, "DAA"),
(jr_z_i8, 8, "JR Z, i8"),
(add_hl_hl, 8, "ADD HL, HL"),
(ld_a_mhli, 8, "LD A, [HL+] "),
(dec_hl, 8, "DEC HL"),
(inc_l, 4, "INC L"),
(dec_l, 4, "DEC L"),
(ld_l_u8, 8, "LD L, u8"),
(cpl, 4, "CPL"),
// 0x3 opcodes
(jr_nc_i8, 8, "JR NC, i8"),
(ld_sp_u16, 12, "LD SP, u16"),
(ld_mhld_a, 8, "LD [HL-], A"),
(inc_sp, 8, "INC SP"),
(inc_mhl, 12, "INC [HL]"),
(dec_mhl, 12, "DEC [HL]"),
(ld_mhl_u8, 12, "LD [HL], u8 "),
(scf, 4, "SCF"),
(jr_c_i8, 8, "JR C, i8"),
(add_hl_sp, 8, "ADD HL, SP"),
(ld_a_mhld, 8, "LD A, [HL-]"),
(dec_sp, 8, "DEC SP"),
(inc_a, 4, "INC A"),
(dec_a, 4, "DEC A"),
(ld_a_u8, 8, "LD A, u8"), (ccf, 4, "CCF"),
// 0x4 opcodes
(ld_b_b, 4, "LD B, B"),
(ld_b_c, 4, "LD B, C"),
(ld_b_d, 4, "LD B, D"),
(ld_b_e, 4, "LD B, E"),
(ld_b_h, 4, "LD B, H"),
(ld_b_l, 4, "LD B, L"),
(ld_b_mhl, 8, "LD B, [HL]"),
(ld_b_a, 4, "LD B, A"),
(ld_c_b, 4, "LD C, B"),
(ld_c_c, 4, "LD C, C"),
(ld_c_d, 4, "LD C, D"),
(ld_c_e, 4, "LD C, E"),
(ld_c_h, 4, "LD C, H"),
(ld_c_l, 4, "LD C, L"),
(ld_c_mhl, 8, "LD C, [HL]"),
(ld_c_a, 4, "LD C, A"),
// 0x5 opcodes
(ld_d_b, 4, "LD D, B"),
(ld_d_c, 4, "LD D, C"),
(ld_d_d, 4, "LD D, D"),
(ld_d_e, 4, "LD D, E"),
(ld_d_h, 4, "LD D, H"),
(ld_d_l, 4, "LD D, L"),
(ld_d_mhl, 8, "LD D, [HL]"),
(ld_d_a, 4, "LD D, A"),
(ld_e_b, 4, "LD E, B"),
(ld_e_c, 4, "LD E, C"),
(ld_e_d, 4, "LD E, D"),
(ld_e_e, 4, "LD E, E"),
(ld_e_h, 4, "LD E, H"),
(ld_e_l, 4, "LD E, L"),
(ld_e_mhl, 8, "LD E, [HL]"),
(ld_e_a, 4, "LD E, A"),
// 0x6 opcodes
(ld_h_b, 4, "LD H, B"),
(ld_h_c, 4, "LD H, C"),
(ld_h_d, 4, "LD H, D"),
(ld_h_e, 4, "LD H, E"),
(ld_h_h, 4, "LD H, H"),
(ld_h_l, 4, "LD H, L"),
(ld_h_mhl, 8, "LD H, [HL]"),
(ld_h_a, 4, "LD H, A"),
(ld_l_b, 4, "LD L, B"),
(ld_l_c, 4, "LD L, C"),
(ld_l_d, 4, "LD L, D"),
(ld_l_e, 4, "LD L, E"),
(ld_l_h, 4, "LD L, H"),
(ld_l_l, 4, "LD L, L"),
(ld_l_mhl, 8, "LD L, [HL]"),
(ld_l_a, 4, "LD L, A"),
// 0x7 opcodes
(ld_mhl_b, 8, "LD [HL], B"),
(ld_mhl_c, 8, "LD [HL], C"),
(ld_mhl_d, 8, "LD [HL], D"),
(ld_mhl_e, 8, "LD [HL], E"),
(ld_mhl_h, 8, "LD [HL], H"),
(ld_mhl_l, 8, "LD [HL], L"),
(halt, 4, "HALT"),
(ld_mhl_a, 8, "LD [HL], A"),
(ld_a_b, 4, "LD A, B"),
(ld_a_c, 4, "LD A, C"),
(ld_a_d, 4, "LD A, D"),
(ld_a_e, 4, "LD A, E"),
(ld_a_h, 4, "LD A, H"),
(ld_a_l, 4, "LD A, L"),
(ld_a_mhl, 8, "LD A, [HL]"),
(ld_a_a, 4, "LD A, A"),
// 0x8 opcodes (add_a_b, 4, "ADD A, B"),
(add_a_c, 4, "ADD A, C"),
(add_a_d, 4, "ADD A, D"),
(add_a_e, 4, "ADD A, E"),
(add_a_h, 4, "ADD A, H"),
(add_a_l, 4, "ADD A, L"),
(add_a_mhl, 8, "ADD A, [HL]"),
(add_a_a, 4, "ADD A, A"),
(adc_a_b, 4, "ADC A, B"),
(adc_a_c, 4, "ADC A, C"),
(adc_a_d, 4, "ADC A, D"),
(adc_a_e, 4, "ADC A, E"),
(adc_a_h, 4, "ADC A, H"),
(adc_a_l, 4, "ADC A, L"),
(adc_a_mhl, 8, "ADC A, [HL]"),
(adc_a_a, 4, "ADC A, A"),
// 0x9 opcodes
(sub_a_b, 4, "SUB A, B"),
(sub_a_c, 4, "SUB A, C"),
(sub_a_d, 4, "SUB A, D"),
(sub_a_e, 4, "SUB A, E"),
(sub_a_h, 4, "SUB A, H"),
(sub_a_l, 4, "SUB A, L"),
(sub_a_mhl, 8, "SUB A, [HL]"),
(sub_a_a, 4, "SUB A, A"),
(sbc_a_b, 4, "SBC A, B"),
(sbc_a_c, 4, "SBC A, C"),
(sbc_a_d, 4, "SBC A, D"),
(sbc_a_e, 4, "SBC A, E"),
(sbc_a_h, 4, "SBC A, H"),
(sbc_a_l, 4, "SBC A, L"),
(sbc_a_mhl, 8, "SBC A, [HL]"),
(sbc_a_a, 4, "SBC A, A"),
// 0xA opcodes
(and_a_b, 4, "AND A, B"),
(and_a_c, 4, "AND A, C"),
(and_a_d, 4, "AND A, D"),
(and_a_e, 4, "AND A, E"),
(and_a_h, 4, "AND A, H"),
(and_a_l, 4, "AND A, L"),
(and_a_mhl, 8, "AND A, [HL]"),
(and_a_a, 4, "AND A, A"),
(xor_a_b, 4, "XOR A, B"),
(xor_a_c, 4, "XOR A, C"),
(xor_a_d, 4, "XOR A, D"),
(xor_a_e, 4, "XOR A, E"),
(xor_a_h, 4, "XOR A, H"),
(xor_a_l, 4, "XOR A, L"),
(xor_a_mhl, 8, "XOR A, [HL]"),
(xor_a_a, 4, "XOR A, A"),
// 0xB opcodes
(or_a_b, 4, "OR A, B"),
(or_a_c, 4, "OR A, C"),
(or_a_d, 4, "OR A, D"),
(or_a_e, 4, "OR A, E"),
(or_a_h, 4, "OR A, H"),
(or_a_l, 4, "OR A, L"),
(or_a_mhl, 8, "OR A, [HL]"),
(or_a_a, 4, "OR A, A"),
(cp_a_b, 4, "CP A, B"),
(cp_a_c, 4, "CP A, C"),
(cp_a_d, 4, "CP A, D"),
(cp_a_e, 4, "CP A, E"),
(cp_a_h, 4, "CP A, H"),
(cp_a_l, 4, "CP A, L"),
(cp_a_mhl, 8, "CP A, [HL]"),
(cp_a_a, 4, "CP A, A"),
// 0xC opcodes
(ret_nz, 8, "RET NZ"),
(pop_bc, 12, "POP BC"), (jp_nz_u16, 12, "JP NZ, u16"),
(jp_u16, 16, "JP u16"),
(call_nz_u16, 12, "CALL NZ, u16"),
(push_bc, 16, "PUSH BC"),
(add_a_u8, 8, "ADD A, u8"),
(rst_00h, 16, "RST 00h"),
(ret_z, 8, "RET Z"),
(ret, 16, "RET"),
(jp_z_u16, 12, "JP Z, u16"),
(illegal, 4, "ILLEGAL"),
(call_z_u16, 12, "CALL Z, u16"),
(call_u16, 24, "CALL u16"),
(adc_a_u8, 8, "ADC A, u8 "),
(rst_08h, 16, "RST 08h"),
// 0xD opcodes
(ret_nc, 8, "RET NC"),
(pop_de, 12, "POP DE"),
(jp_nc_u16, 12, "JP NC, u16"),
(illegal, 4, "ILLEGAL"),
(call_nc_u16, 12, "CALL NC, u16 "),
(push_de, 16, "PUSH DE"),
(sub_a_u8, 8, "SUB A, u8"),
(rst_10h, 16, "RST 10h"),
(ret_c, 8, "RET C"),
(reti, 16, "RETI"),
(jp_c_u16, 12, "JP C, u16"),
(illegal, 4, "ILLEGAL"),
(call_c_u16, 12, "CALL C, u16"),
(illegal, 4, "ILLEGAL"),
(sbc_a_u8, 8, "SBC A, u8"),
(rst_18h, 16, "RST 18h"),
// 0xE opcodes
(ld_mff00u8_a, 12, "LD [FF00+u8], A"),
(pop_hl, 12, "POP HL"),
(ld_mff00c_a, 8, "LD [FF00+C], A"),
(illegal, 4, "ILLEGAL"),
(illegal, 4, "ILLEGAL"),
(push_hl, 16, "PUSH HL"),
(and_a_u8, 8, "AND A, u8"),
(rst_20h, 16, "RST 20h"),
(add_sp_i8, 16, "ADD SP, i8"),
(jp_hl, 4, "JP HL"),
(ld_mu16_a, 16, "LD [u16], A"),
(illegal, 4, "ILLEGAL"),
(illegal, 4, "ILLEGAL"),
(illegal, 4, "ILLEGAL"),
(xor_a_u8, 8, "XOR A, u8"),
(rst_28h, 16, "RST 28h"),
// 0xF opcodes
(ld_a_mff00u8, 12, "LD A, [FF00+u8]"),
(pop_af, 12, "POP AF"),
(ld_a_mff00c, 8, "LD A, [FF00+C]"),
(di, 4, "DI"),
(illegal, 4, "ILLEGAL"),
(push_af, 16, "PUSH AF"),
(or_a_u8, 8, "OR A, u8"),
(rst_30h, 16, "RST 30h"),
(ld_hl_spi8, 12, "LD HL, SP+i8"),
(ld_sp_hl, 8, "LD SP, HL"),
(ld_a_mu16, 16, "LD A [u16]"),
(ei, 4, "EI"),
(illegal, 4, "ILLEGAL"),
(illegal, 4, "ILLEGAL"),
(cp_a_u8, 8, "CP A, u8"),
(rst_38h, 16, "RST 38h"),
];
pub const EXTENDED: [Instruction; 256] = [
// 0x0 opcodes
(rlc_b, 8, "RLC B"), (rlc_c, 8, "RLC C"),
(rlc_d, 8, "RLC D"),
(rlc_e, 8, "RLC E"),
(rlc_h, 8, "RLC H"),
(rlc_l, 8, "RLC L"),
(rlc_mhl, 16, "RLC [HL]"),
(rlc_a, 8, "RLC A"),
(rrc_b, 8, "RRC B"),
(rrc_c, 8, "RRC C"),
(rrc_d, 8, "RRC D"),
(rrc_e, 8, "RRC E"),
(rrc_h, 8, "RRC H"),
(rrc_l, 8, "RRC L"),
(rrc_mhl, 16, "RRC [HL]"),
(rrc_a, 8, "RRC A"),
// 0x1 opcodes
(rl_b, 8, "RL B"),
(rl_c, 8, "RL C"),
(rl_d, 8, "RL D"),
(rl_e, 8, "RL E"),
(rl_h, 8, "RL H"),
(rl_l, 8, "RL L"),
(rl_mhl, 16, "RL [HL]"),
(rl_a, 8, "RL A"),
(rr_b, 8, "RR B"),
(rr_c, 8, "RR C"),
(rr_d, 8, "RR D"),
(rr_e, 8, "RR E"),
(rr_h, 8, "RR H"),
(rr_l, 8, "RR L"),
(rr_mhl, 16, "RR [HL]"),
(rr_a, 8, "RR A"),
// 0x2 opcodes
(sla_b, 8, "SLA B"),
(sla_c, 8, "SLA C"),
(sla_d, 8, "SLA D"),
(sla_e, 8, "SLA E"),
(sla_h, 8, "SLA H"),
(sla_l, 8, "SLA L"),
(sla_mhl, 16, "SLA [HL]"),
(sla_a, 8, "SLA A"),
(sra_b, 8, "SRA B"),
(sra_c, 8, "SRA C"),
(sra_d, 8, "SRA D"),
(sra_e, 8, "SRA E"),
(sra_h, 8, "SRA H"),
(sra_l, 8, "SRA L"),
(sra_mhl, 16, "SRA [HL]"),
(sra_a, 8, "SRA A"),
// 0x3 opcodes
(swap_b, 8, "SWAP B"),
(swap_c, 8, "SWAP C"),
(swap_d, 8, "SWAP D"),
(swap_e, 8, "SWAP E"),
(swap_h, 8, "SWAP H"),
(swap_l, 8, "SWAP L"),
(swap_mhl, 16, "SWAP [HL]"),
(swap_a, 8, "SWAP A"),
(srl_b, 8, "SRL B"),
(srl_c, 8, "SRL B"),
(srl_d, 8, "SRL D"),
(srl_e, 8, "SRL E"),
(srl_h, 8, "SRL H"),
(srl_l, 8, "SRL L"),
(srl_mhl, 16, "SRL [HL]"),
(srl_a, 8, "SRL A"),
// 0x4 opcodes
(bit_0_b, 8, "BIT 0, B"),
(bit_0_c, 8, "BIT 0, C"),
(bit_0_d, 8, "BIT 0, D"), (bit_0_e, 8, "BIT 0, E"),
(bit_0_h, 8, "BIT 0, H"),
(bit_0_l, 8, "BIT 0, L"),
(bit_0_mhl, 12, "BIT 0, [HL]"),
(bit_0_a, 8, "BIT 0, A"),
(bit_1_b, 8, "BIT 1, B"),
(bit_1_c, 8, "BIT 1, C"),
(bit_1_d, 8, "BIT 1, D"),
(bit_1_e, 8, "BIT 1, E"),
(bit_1_h, 8, "BIT 1, H"),
(bit_1_l, 8, "BIT 1, L"),
(bit_1_mhl, 12, "BIT 1, [HL]"),
(bit_1_a, 8, "BIT 1, A"),
// 0x5 opcodes
(bit_2_b, 8, "BIT 2, B"),
(bit_2_c, 8, "BIT 2, C"),
(bit_2_d, 8, "BIT 2, D"),
(bit_2_e, 8, "BIT 2, E"),
(bit_2_h, 8, "BIT 2, H"),
(bit_2_l, 8, "BIT 2, L"),
(bit_2_mhl, 12, "BIT 2, [HL]"),
(bit_2_a, 8, "BIT 2, A"),
(bit_3_b, 8, "BIT 3, B"),
(bit_3_c, 8, "BIT 3, C"),
(bit_3_d, 8, "BIT 3, D"),
(bit_3_e, 8, "BIT 3, E"),
(bit_3_h, 8, "BIT 3, H"),
(bit_3_l, 8, "BIT 3, L"),
(bit_3_mhl, 12, "BIT 3, [HL]"),
(bit_3_a, 8, "BIT 3, A"),
// 0x6 opcodes
(bit_4_b, 8, "BIT 4, B"),
(bit_4_c, 8, "BIT 4, C"),
(bit_4_d, 8, "BIT 4, D"),
(bit_4_e, 8, "BIT 4, E"),
(bit_4_h, 8, "BIT 4, H"),
(bit_4_l, 8, "BIT 4, L"),
(bit_4_mhl, 12, "BIT 4, [HL]"),
(bit_4_a, 8, "BIT 4, A"),
(bit_5_b, 8, "BIT 5, B"),
(bit_5_c, 8, "BIT 5, C"),
(bit_5_d, 8, "BIT 5, D"),
(bit_5_e, 8, "BIT 5, E"),
(bit_5_h, 8, "BIT 5, H"),
(bit_5_l, 8, "BIT 5, L"),
(bit_5_mhl, 12, "BIT 5, [HL]"),
(bit_5_a, 8, "BIT 5, A"),
// 0x7 opcodes
(bit_6_b, 8, "BIT 6, B"),
(bit_6_c, 8, "BIT 6, C"),
(bit_6_d, 8, "BIT 6, D"),
(bit_6_e, 8, "BIT 6, E"),
(bit_6_h, 8, "BIT 6, H"),
(bit_6_l, 8, "BIT 6, L"),
(bit_6_mhl, 12, "BIT 6, [HL]"),
(bit_6_a, 8, "BIT 6, A"),
(bit_7_b, 8, "BIT 7, B"),
(bit_7_c, 8, "BIT 7, C"),
(bit_7_d, 8, "BIT 7, D"),
(bit_7_e, 8, "BIT 7, E"),
(bit_7_h, 8, "BIT 7, H"),
(bit_7_l, 8, "BIT 7, L"),
(bit_7_mhl, 12, "BIT 7, [HL]"),
(bit_7_a, 8, "BIT 7, A"),
// 0x8 opcodes
(res_0_b, 8, "RES 0, B"),
(res_0_c, 8, "RES 0, C"),
(res_0_d, 8, "RES 0, D"),
(res_0_e, 8, "RES 0, E"),
(res_0_h, 8, "RES 0, H"), (res_0_l, 8, "RES 0, L"),
(res_0_mhl, 16, "RES 0, A"),
(res_0_a, 8, "RES 0, A"),
(res_1_b, 8, "RES 1, B"),
(res_1_c, 8, "RES 1, C"),
(res_1_d, 8, "RES 1, D"),
(res_1_e, 8, "RES 1, E"),
(res_1_h, 8, "RES 1, H"),
(res_1_l, 8, "RES 1, L"),
(res_1_mhl, 16, "RES 1, A"),
(res_1_a, 8, "RES 1, A"),
// 0x9 opcodes
(res_2_b, 8, "RES 2, B"),
(res_2_c, 8, "RES 2, C"),
(res_2_d, 8, "RES 2, D"),
(res_2_e, 8, "RES 2, E"),
(res_2_h, 8, "RES 2, H"),
(res_2_l, 8, "RES 2, L"),
(res_2_mhl, 16, "RES 2, A"),
(res_2_a, 8, "RES 2, A"),
(res_3_b, 8, "RES 3, B"),
(res_3_c, 8, "RES 3, C"),
(res_3_d, 8, "RES 3, D"),
(res_3_e, 8, "RES 3, E"),
(res_3_h, 8, "RES 3, H"),
(res_3_l, 8, "RES 3, L"),
(res_3_mhl, 16, "RES 3, A"),
(res_3_a, 8, "RES 3, A"),
// 0xA opcodes
(res_4_b, 8, "RES 4, B"),
(res_4_c, 8, "RES 4, C"),
(res_4_d, 8, "RES 4, D"),
(res_4_e, 8, "RES 4, E"),
(res_4_h, 8, "RES 4, H"),
(res_4_l, 8, "RES 4, L"),
(res_4_mhl, 16, "RES 4, A"),
(res_4_a, 8, "RES 4, A"),
(res_5_b, 8, "RES 5, B"),
(res_5_c, 8, "RES 5, C"),
(res_5_d, 8, "RES 5, D"),
(res_5_e, 8, "RES 5, E"),
(res_5_h, 8, "RES 5, H"),
(res_5_l, 8, "RES 5, L"),
(res_5_mhl, 16, "RES 5, A"),
(res_5_a, 8, "RES 5, A"),
// 0xB opcodes
(res_6_b, 8, "RES 6, B"),
(res_6_c, 8, "RES 6, C"),
(res_6_d, 8, "RES 6, D"),
(res_6_e, 8, "RES 6, E"),
(res_6_h, 8, "RES 6, H"),
(res_6_l, 8, "RES 6, L"),
(res_6_mhl, 16, "RES 6, A"),
(res_6_a, 8, "RES 6, A"),
(res_7_b, 8, "RES 7, B"),
(res_7_c, 8, "RES 7, C"),
(res_7_d, 8, "RES 7, D"),
(res_7_e, 8, "RES 7, E"),
(res_7_h, 8, "RES 7, H"),
(res_7_l, 8, "RES 7, L"),
(res_7_mhl, 16, "RES 7, A"),
(res_7_a, 8, "RES 7, A"),
// 0xC opcodes
(set_0_b, 8, "SET 0, B"),
(set_0_c, 8, "SET 0, C"),
(set_0_d, 8, "SET 0, D"),
(set_0_e, 8, "SET 0, E"),
(set_0_h, 8, "SET 0, H"),
(set_0_l, 8, "SET 0, L"),
(set_0_mhl, 16, "SET 0, [HL]"), (set_0_a, 8, "SET 0, A"),
(set_1_b, 8, "SET 1, B"),
(set_1_c, 8, "SET 1, C"),
(set_1_d, 8, "SET 1, D"),
(set_1_e, 8, "SET 1, E"),
(set_1_h, 8, "SET 1, H"),
(set_1_l, 8, "SET 1, L"),
(set_1_mhl, 16, "SET 1, [HL]"),
(set_1_a, 8, "SET 1, A"),
// 0xD opcodes
(set_2_b, 8, "SET 2, B"),
(set_2_c, 8, "SET 2, C"),
(set_2_d, 8, "SET 2, D"),
(set_2_e, 8, "SET 2, E"),
(set_2_h, 8, "SET 2, H"),
(set_2_l, 8, "SET 2, L"),
(set_2_mhl, 16, "SET 2, [HL]"),
(set_2_a, 8, "SET 2, A"),
(set_3_b, 8, "SET 3, B"),
(set_3_c, 8, "SET 3, C"),
(set_3_d, 8, "SET 3, D"),
(set_3_e, 8, "SET 3, E"),
(set_3_h, 8, "SET 3, H"),
(set_3_l, 8, "SET 3, L"),
(set_3_mhl, 16, "SET 3, [HL]"),
(set_3_a, 8, "SET 3, A"),
// 0xE opcodes
(set_4_b, 8, "SET 4, B"),
(set_4_c, 8, "SET 4, C"),
(set_4_d, 8, "SET 4, D"),
(set_4_e, 8, "SET 4, E"),
(set_4_h, 8, "SET 4, H"),
(set_4_l, 8, "SET 4, L"),
(set_4_mhl, 16, "SET 4, [HL]"),
(set_4_a, 8, "SET 4, A"),
(set_5_b, 8, "SET 5, B"),
(set_5_c, 8, "SET 5, C"),
(set_5_d, 8, "SET 5, D"),
(set_5_e, 8, "SET 5, E"),
(set_5_h, 8, "SET 5, H"),
(set_5_l, 8, "SET 5, L"),
(set_5_mhl, 16, "SET 5, [HL]"),
(set_5_a, 8, "SET 5, A"),
// 0xF opcodes
(set_6_b, 8, "SET 6, B"),
(set_6_c, 8, "SET 6, C"),
(set_6_d, 8, "SET 6, D"),
(set_6_e, 8, "SET 6, E"),
(set_6_h, 8, "SET 6, H"),
(set_6_l, 8, "SET 6, L"),
(set_6_mhl, 16, "SET 6, [HL]"),
(set_6_a, 8, "SET 6, A"),
(set_7_b, 8, "SET 7, B"),
(set_7_c, 8, "SET 7, C"),
(set_7_d, 8, "SET 7, D"),
(set_7_e, 8, "SET 7, E"),
(set_7_h, 8, "SET 7, H"),
(set_7_l, 8, "SET 7, L"),
(set_7_mhl, 16, "SET 7, [HL]"),
(set_7_a, 8, "SET 7, A"),
];
pub type Instruction = (fn(&mut Cpu), u8, &'static str);
fn nop(_cpu: &mut Cpu) {}
fn illegal(_cpu: &mut Cpu) {
panic!("Illegal instruction");
}
fn ld_bc_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.set_bc(word);
}
fn ld_mbc_a(cpu: &mut Cpu) {
cpu.mmu.write(cpu.bc(), cpu.a);
}
fn inc_bc(cpu: &mut Cpu) {
cpu.set_bc(cpu.bc().wrapping_add(1));
}
fn inc_b(cpu: &mut Cpu) {
let b = cpu.b;
let value = b.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((b & 0xf) == 0xf);
cpu.b = value;
}
fn dec_b(cpu: &mut Cpu) {
let b = cpu.b;
let value = b.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((b & 0xf) == 0x0);
cpu.b = value;
}
fn ld_b_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.b = byte;
}
fn rlca(cpu: &mut Cpu) {
let carry = cpu.a >> 7;
cpu.a = cpu.a << 1 | carry;
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry(false);
cpu.set_carry(carry == 1);
}
fn ld_mu16_sp(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.mmu.write(word, cpu.sp as u8);
cpu.mmu.write(word + 1, (cpu.sp >> 8) as u8);
}
fn add_hl_bc(cpu: &mut Cpu) {
let value = add_u16_u16(cpu, cpu.hl(), cpu.bc());
cpu.set_hl(value);
}
fn ld_a_mbc(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.bc());
cpu.a = byte;
}
fn dec_bc(cpu: &mut Cpu) {
cpu.set_bc(cpu.bc().wrapping_sub(1));
}
fn inc_c(cpu: &mut Cpu) {
let c = cpu.c;
let value = cpu.c.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((c & 0xf) == 0xf);
cpu.c = value;
}
fn dec_c(cpu: &mut Cpu) {
let c = cpu.c;
let value = c.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((c & 0xf) == 0x0);
cpu.c = value;
}
fn ld_c_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.c = byte;
}
fn rrca(cpu: &mut Cpu) {
let carry = cpu.a & 0x1;
cpu.a = (cpu.a >> 1) | (carry << 7);
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry(false);
cpu.set_carry(carry == 0x1);
}
fn stop(cpu: &mut Cpu) {
cpu.stop();
}
fn ld_de_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.set_de(word);
}
fn ld_mde_a(cpu: &mut Cpu) {
cpu.mmu.write(cpu.de(), cpu.a);
}
fn inc_de(cpu: &mut Cpu) {
cpu.set_de(cpu.de().wrapping_add(1));
}
fn inc_d(cpu: &mut Cpu) {
let d = cpu.d;
let value = d.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((d & 0xf) == 0xf);
cpu.d = value;
}
fn dec_d(cpu: &mut Cpu) {
let d = cpu.d;
let value = d.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((d & 0xf) == 0x0);
cpu.d = value;
}
fn ld_d_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.d = byte;
}
fn rla(cpu: &mut Cpu) {
let carry = cpu.carry();
cpu.set_carry(cpu.a & 0x80 == 0x80);
cpu.a = cpu.a << 1 | carry as u8;
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry(false);
}
fn jr_i8(cpu: &mut Cpu) {
let byte = cpu.read_u8() as i8;
cpu.pc = (cpu.pc as i16).wrapping_add(byte as i16) as u16;
}
fn add_hl_de(cpu: &mut Cpu) {
let value = add_u16_u16(cpu, cpu.hl(), cpu.de());
cpu.set_hl(value);
}
fn ld_a_mde(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.de());
cpu.a = byte;
}
fn dec_de(cpu: &mut Cpu) {
cpu.set_de(cpu.de().wrapping_sub(1));
}
fn inc_e(cpu: &mut Cpu) {
let e = cpu.e;
let value = cpu.e.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((e & 0xf) == 0xf);
cpu.e = value;
}
fn dec_e(cpu: &mut Cpu) {
let e = cpu.e;
let value = e.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((e & 0xf) == 0x0);
cpu.e = value;
}
fn ld_e_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.e = byte;
}
fn rra(cpu: &mut Cpu) {
let carry = cpu.carry();
cpu.set_carry((cpu.a & 0x1) == 0x1);
cpu.a = cpu.a >> 1 | ((carry as u8) << 7);
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry(false);
}
fn jr_nz_i8(cpu: &mut Cpu) {
let byte = cpu.read_u8() as i8;
if cpu.zero() {
return;
}
cpu.pc = (cpu.pc as i16).wrapping_add(byte as i16) as u16;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn ld_hl_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.set_hl(word);
}
fn ld_mhli_a(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.a);
cpu.set_hl(cpu.hl().wrapping_add(1));
}
fn inc_hl(cpu: &mut Cpu) {
cpu.set_hl(cpu.hl().wrapping_add(1));
}
fn inc_h(cpu: &mut Cpu) {
let h = cpu.h;
let value = cpu.h.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((h & 0xf) == 0xf);
cpu.h = value;
}
fn dec_h(cpu: &mut Cpu) {
let h = cpu.h;
let value = h.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((h & 0xf) == 0x0);
cpu.h = value;
}
fn ld_h_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.h = byte;
}
fn daa(cpu: &mut Cpu) {
let a = cpu.a;
let mut adjust = 0;
if cpu.half_carry() {
adjust |= 0x06; }
if cpu.carry() {
// Yes, we have to adjust it.
adjust |= 0x60;
}
let res = if cpu.sub() {
a.wrapping_sub(adjust)
} else {
if a & 0x0f > 0x09 {
adjust |= 0x06;
}
if a > 0x99 {
adjust |= 0x60;
}
a.wrapping_add(adjust)
};
cpu.a = res;
cpu.set_zero(res == 0);
cpu.set_half_carry(false);
cpu.set_carry(adjust & 0x60 == 0x60);
}
fn jr_z_i8(cpu: &mut Cpu) {
let byte = cpu.read_u8() as i8;
if !cpu.zero() {
return;
}
cpu.pc = (cpu.pc as i16).wrapping_add(byte as i16) as u16;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn add_hl_hl(cpu: &mut Cpu) {
let value = add_u16_u16(cpu, cpu.hl(), cpu.hl());
cpu.set_hl(value);
}
fn ld_a_mhli(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = byte;
cpu.set_hl(cpu.hl().wrapping_add(1));
}
fn dec_hl(cpu: &mut Cpu) {
cpu.set_hl(cpu.hl().wrapping_sub(1));
}
fn inc_l(cpu: &mut Cpu) {
let l = cpu.l;
let value = l.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((l & 0xf) == 0xf);
cpu.l = value;
}
fn dec_l(cpu: &mut Cpu) {
let l = cpu.l;
let value = l.wrapping_sub(1);
cpu.set_sub(true); cpu.set_zero(value == 0);
cpu.set_half_carry((l & 0xf) == 0x0);
cpu.l = value;
}
fn ld_l_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.l = byte;
}
fn cpl(cpu: &mut Cpu) {
cpu.a = !cpu.a;
cpu.set_sub(true);
cpu.set_half_carry(true);
}
fn ld_sp_u16(cpu: &mut Cpu) {
cpu.sp = cpu.read_u16();
}
fn jr_nc_i8(cpu: &mut Cpu) {
let byte = cpu.read_u8() as i8;
if cpu.carry() {
return;
}
cpu.pc = (cpu.pc as i16).wrapping_add(byte as i16) as u16;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn ld_mhld_a(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.a);
cpu.set_hl(cpu.hl().wrapping_sub(1));
}
fn inc_sp(cpu: &mut Cpu) {
cpu.sp = cpu.sp.wrapping_add(1);
}
fn inc_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
let value = byte.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((byte & 0xf) == 0xf);
cpu.mmu.write(cpu.hl(), value);
}
fn dec_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
let value = byte.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((byte & 0xf) == 0x0);
cpu.mmu.write(cpu.hl(), value);
}
fn ld_mhl_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.mmu.write(cpu.hl(), byte);
}
fn scf(cpu: &mut Cpu) { cpu.set_sub(false);
cpu.set_half_carry(false);
cpu.set_carry(true);
}
fn jr_c_i8(cpu: &mut Cpu) {
let byte = cpu.read_u8() as i8;
if !cpu.carry() {
return;
}
cpu.pc = (cpu.pc as i16).wrapping_add(byte as i16) as u16;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn add_hl_sp(cpu: &mut Cpu) {
let value = add_u16_u16(cpu, cpu.hl(), cpu.sp());
cpu.set_hl(value);
}
fn ld_a_mhld(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = byte;
cpu.set_hl(cpu.hl().wrapping_sub(1));
}
fn dec_sp(cpu: &mut Cpu) {
cpu.sp = cpu.sp.wrapping_sub(1);
}
fn inc_a(cpu: &mut Cpu) {
let a = cpu.a;
let value = a.wrapping_add(1);
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry((a & 0xf) == 0xf);
cpu.a = value;
}
fn dec_a(cpu: &mut Cpu) {
let a = cpu.a;
let value = a.wrapping_sub(1);
cpu.set_sub(true);
cpu.set_zero(value == 0);
cpu.set_half_carry((a & 0xf) == 0x0);
cpu.a = value;
}
fn ld_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = byte;
}
fn ccf(cpu: &mut Cpu) {
cpu.set_sub(false);
cpu.set_half_carry(false);
cpu.set_carry(!cpu.carry());
}
fn ld_b_b(_cpu: &mut Cpu) {}
fn ld_b_c(cpu: &mut Cpu) {
cpu.b = cpu.c;
}
fn ld_b_d(cpu: &mut Cpu) {
cpu.b = cpu.d;
}
fn ld_b_e(cpu: &mut Cpu) {
cpu.b = cpu.e;
}
fn ld_b_h(cpu: &mut Cpu) {
cpu.b = cpu.h;
}
fn ld_b_l(cpu: &mut Cpu) {
cpu.b = cpu.l;
}
fn ld_b_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.b = byte;
}
fn ld_b_a(cpu: &mut Cpu) {
cpu.b = cpu.a;
}
fn ld_c_b(cpu: &mut Cpu) {
cpu.c = cpu.b;
}
fn ld_c_c(_cpu: &mut Cpu) {}
fn ld_c_d(cpu: &mut Cpu) {
cpu.c = cpu.d;
}
fn ld_c_e(cpu: &mut Cpu) {
cpu.c = cpu.e;
}
fn ld_c_h(cpu: &mut Cpu) {
cpu.c = cpu.h;
}
fn ld_c_l(cpu: &mut Cpu) {
cpu.c = cpu.l;
}
fn ld_c_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.c = byte;
}
fn ld_c_a(cpu: &mut Cpu) {
cpu.c = cpu.a;
}
fn ld_d_b(cpu: &mut Cpu) {
cpu.d = cpu.b;
}
fn ld_d_c(cpu: &mut Cpu) {
cpu.d = cpu.c;
}
fn ld_d_d(_cpu: &mut Cpu) {}
fn ld_d_e(cpu: &mut Cpu) {
cpu.d = cpu.e;
}
fn ld_d_h(cpu: &mut Cpu) {
cpu.d = cpu.h;
}
fn ld_d_l(cpu: &mut Cpu) {
cpu.d = cpu.l;
}
fn ld_d_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.d = byte;
}
fn ld_d_a(cpu: &mut Cpu) {
cpu.d = cpu.a;
}
fn ld_e_b(cpu: &mut Cpu) {
cpu.e = cpu.b;
}
fn ld_e_c(cpu: &mut Cpu) {
cpu.e = cpu.c;
}
fn ld_e_d(cpu: &mut Cpu) {
cpu.e = cpu.d;
}
fn ld_e_e(_cpu: &mut Cpu) {}
fn ld_e_h(cpu: &mut Cpu) {
cpu.e = cpu.h;
}
fn ld_e_l(cpu: &mut Cpu) {
cpu.e = cpu.l;
}
fn ld_e_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.e = byte;
}
fn ld_e_a(cpu: &mut Cpu) {
cpu.e = cpu.a;
}
fn ld_h_b(cpu: &mut Cpu) {
cpu.h = cpu.b;
}
fn ld_h_c(cpu: &mut Cpu) {
cpu.h = cpu.c;
}
fn ld_h_d(cpu: &mut Cpu) {
cpu.h = cpu.d;
}
fn ld_h_e(cpu: &mut Cpu) {
cpu.h = cpu.e;
}
fn ld_h_h(_cpu: &mut Cpu) {}
fn ld_h_l(cpu: &mut Cpu) {
cpu.h = cpu.l;
}
fn ld_h_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.h = byte;
}
fn ld_h_a(cpu: &mut Cpu) {
cpu.h = cpu.a;
}
fn ld_l_b(cpu: &mut Cpu) {
cpu.l = cpu.b;
}
fn ld_l_c(cpu: &mut Cpu) {
cpu.l = cpu.c;
}
fn ld_l_d(cpu: &mut Cpu) {
cpu.l = cpu.d;
}
fn ld_l_e(cpu: &mut Cpu) {
cpu.l = cpu.e;
}
fn ld_l_h(cpu: &mut Cpu) {
cpu.l = cpu.h;
}
fn ld_l_l(_cpu: &mut Cpu) {}
fn ld_l_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.l = byte;
}
fn ld_l_a(cpu: &mut Cpu) {
cpu.l = cpu.a;
}
fn ld_mhl_b(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.b);
}
fn ld_mhl_c(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.c);
}
fn ld_mhl_d(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.d);
}
fn ld_mhl_e(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.e);
}
fn ld_mhl_h(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.h);
}
fn ld_mhl_l(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.l);
}
fn halt(cpu: &mut Cpu) {
cpu.halt();
}
fn ld_mhl_a(cpu: &mut Cpu) {
cpu.mmu.write(cpu.hl(), cpu.a);}
fn ld_a_b(cpu: &mut Cpu) {
cpu.a = cpu.b;
}
fn ld_a_c(cpu: &mut Cpu) {
cpu.a = cpu.c;
}
fn ld_a_d(cpu: &mut Cpu) {
cpu.a = cpu.d;
}
fn ld_a_e(cpu: &mut Cpu) {
cpu.a = cpu.e;
}
fn ld_a_h(cpu: &mut Cpu) {
cpu.a = cpu.h;
}
fn ld_a_l(cpu: &mut Cpu) {
cpu.a = cpu.l;
}
fn ld_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = byte;
}
fn ld_a_a(_cpu: &mut Cpu) {}
fn add_a_b(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.b);
}
fn add_a_c(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.c);
}
fn add_a_d(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.d);
}
fn add_a_e(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.e);
}
fn add_a_h(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.h);
}
fn add_a_l(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.l);
}
fn add_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = add_set_flags(cpu, cpu.a, byte);
}
fn add_a_a(cpu: &mut Cpu) {
cpu.a = add_set_flags(cpu, cpu.a, cpu.a);
}
fn adc_a_b(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.b);
}
fn adc_a_c(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.c);
}
fn adc_a_d(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.d);
}
fn adc_a_e(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.e);
}
fn adc_a_h(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.h);
}
fn adc_a_l(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.l);
}
fn adc_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = add_carry_set_flags(cpu, cpu.a, byte);
}
fn adc_a_a(cpu: &mut Cpu) {
cpu.a = add_carry_set_flags(cpu, cpu.a, cpu.a);
}
fn sub_a_b(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.b);
}
fn sub_a_c(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.c);
}
fn sub_a_d(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.d);
}
fn sub_a_e(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.e);
}
fn sub_a_h(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.h);
}
fn sub_a_l(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.l);
}
fn sub_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = sub_set_flags(cpu, cpu.a, byte);
}
fn sub_a_a(cpu: &mut Cpu) {
cpu.a = sub_set_flags(cpu, cpu.a, cpu.a);
}
fn sbc_a_b(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.b);
}
fn sbc_a_c(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.c);
}
fn sbc_a_d(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.d);
}
fn sbc_a_e(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.e);
}
fn sbc_a_h(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.h);
}
fn sbc_a_l(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.l);
}
fn sbc_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a = sub_carry_set_flags(cpu, cpu.a, byte);
}
fn sbc_a_a(cpu: &mut Cpu) {
cpu.a = sub_carry_set_flags(cpu, cpu.a, cpu.a);
}
fn and_a_b(cpu: &mut Cpu) {
cpu.a &= cpu.b;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_c(cpu: &mut Cpu) {
cpu.a &= cpu.c;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_d(cpu: &mut Cpu) {
cpu.a &= cpu.d;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_e(cpu: &mut Cpu) {
cpu.a &= cpu.e;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_h(cpu: &mut Cpu) {
cpu.a &= cpu.h;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_l(cpu: &mut Cpu) {
cpu.a &= cpu.l;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a &= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn and_a_a(cpu: &mut Cpu) {
cpu.a &= cpu.a;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn xor_a_b(cpu: &mut Cpu) {
cpu.a ^= cpu.b;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_c(cpu: &mut Cpu) {
cpu.a ^= cpu.c;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_d(cpu: &mut Cpu) {
cpu.a ^= cpu.d;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_e(cpu: &mut Cpu) {
cpu.a ^= cpu.e;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_h(cpu: &mut Cpu) {
cpu.a ^= cpu.h;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false); cpu.set_carry(false);
}
fn xor_a_l(cpu: &mut Cpu) {
cpu.a ^= cpu.l;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a ^= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn xor_a_a(cpu: &mut Cpu) {
cpu.a ^= cpu.a;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_b(cpu: &mut Cpu) {
cpu.a |= cpu.b;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_c(cpu: &mut Cpu) {
cpu.a |= cpu.c;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_d(cpu: &mut Cpu) {
cpu.a |= cpu.d;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_e(cpu: &mut Cpu) {
cpu.a |= cpu.e;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_h(cpu: &mut Cpu) {
cpu.a |= cpu.h;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_l(cpu: &mut Cpu) {
cpu.a |= cpu.l;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
cpu.a |= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn or_a_a(cpu: &mut Cpu) {
cpu.a |= cpu.a;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn cp_a_b(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.b);
}
fn cp_a_c(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.c);
}
fn cp_a_d(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.d);
}
fn cp_a_e(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.e);
}
fn cp_a_h(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.h);
}
fn cp_a_l(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.l);
}
fn cp_a_mhl(cpu: &mut Cpu) {
let byte = cpu.mmu.read(cpu.hl());
sub_set_flags(cpu, cpu.a, byte);
}
fn cp_a_a(cpu: &mut Cpu) {
sub_set_flags(cpu, cpu.a, cpu.a);
}
fn ret_nz(cpu: &mut Cpu) {
if cpu.zero() {
return; }
cpu.pc = cpu.pop_word();
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn pop_bc(cpu: &mut Cpu) {
let word = cpu.pop_word();
cpu.set_bc(word);
}
fn jp_nz_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if cpu.zero() {
return;
}
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn jp_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.pc = word;
}
fn call_nz_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if cpu.zero() {
return;
}
cpu.push_word(cpu.pc);
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn push_bc(cpu: &mut Cpu) {
cpu.push_word(cpu.bc());
}
fn add_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = add_set_flags(cpu, cpu.a, byte);
}
fn rst_00h(cpu: &mut Cpu) {
rst(cpu, 0x0000);
}
fn ret_z(cpu: &mut Cpu) {
if !cpu.zero() {
return;
}
cpu.pc = cpu.pop_word();
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn ret(cpu: &mut Cpu) {
cpu.pc = cpu.pop_word();
}
fn jp_z_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if !cpu.zero() {
return; }
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn call_z_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if !cpu.zero() {
return;
}
cpu.push_word(cpu.pc);
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn call_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.push_word(cpu.pc);
cpu.pc = word;
}
fn adc_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = add_carry_set_flags(cpu, cpu.a, byte);
}
fn rst_08h(cpu: &mut Cpu) {
rst(cpu, 0x0008);
}
fn ret_nc(cpu: &mut Cpu) {
if cpu.carry() {
return;
}
cpu.pc = cpu.pop_word();
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn pop_de(cpu: &mut Cpu) {
let word = cpu.pop_word();
cpu.set_de(word);
}
fn jp_nc_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if cpu.carry() {
return;
}
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn call_nc_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if cpu.carry() {
return;
}
cpu.push_word(cpu.pc);
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn push_de(cpu: &mut Cpu) {
cpu.push_word(cpu.de());
}
fn sub_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = sub_set_flags(cpu, cpu.a, byte);
}
fn rst_10h(cpu: &mut Cpu) {
rst(cpu, 0x0010);
}
fn ret_c(cpu: &mut Cpu) {
if !cpu.carry() {
return;
}
cpu.pc = cpu.pop_word();
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn reti(cpu: &mut Cpu) {
cpu.pc = cpu.pop_word();
cpu.enable_int();
}
fn jp_c_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if !cpu.carry() {
return;
}
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(4);
}
fn call_c_u16(cpu: &mut Cpu) {
let word = cpu.read_u16();
if !cpu.carry() {
return;
}
cpu.push_word(cpu.pc);
cpu.pc = word;
cpu.cycles = cpu.cycles.wrapping_add(12);
}
fn sbc_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = sub_carry_set_flags(cpu, cpu.a, byte);
}
fn rst_18h(cpu: &mut Cpu) {
rst(cpu, 0x0018);
}
fn ld_mff00u8_a(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.mmu.write(0xff00 + byte as u16, cpu.a);
}
fn pop_hl(cpu: &mut Cpu) {
let word = cpu.pop_word();
cpu.set_hl(word);
}
fn ld_mff00c_a(cpu: &mut Cpu) { cpu.mmu.write(0xff00 + cpu.c as u16, cpu.a);
}
fn push_hl(cpu: &mut Cpu) {
cpu.push_word(cpu.hl());
}
fn and_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a &= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(true);
cpu.set_carry(false);
}
fn rst_20h(cpu: &mut Cpu) {
rst(cpu, 0x0020);
}
fn add_sp_i8(cpu: &mut Cpu) {
let sp = cpu.sp as i32;
let byte = cpu.read_u8() as i8;
let byte_i32 = byte as i32;
let result = sp.wrapping_add(byte_i32);
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry((sp ^ byte_i32 ^ result) & 0x10 == 0x10);
cpu.set_carry((sp ^ byte_i32 ^ result) & 0x100 == 0x100);
cpu.sp = result as u16;
}
fn jp_hl(cpu: &mut Cpu) {
cpu.pc = cpu.hl();
}
fn ld_mu16_a(cpu: &mut Cpu) {
let word = cpu.read_u16();
cpu.mmu.write(word, cpu.a);
}
fn xor_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a ^= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn rst_28h(cpu: &mut Cpu) {
rst(cpu, 0x0028);
}
fn ld_a_mff00u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a = cpu.mmu.read(0xff00 + byte as u16);
}
fn pop_af(cpu: &mut Cpu) {
let word = cpu.pop_word();
cpu.set_af(word);
}
fn ld_a_mff00c(cpu: &mut Cpu) {
cpu.a = cpu.mmu.read(0xff00 + cpu.c as u16);
}
fn di(cpu: &mut Cpu) {
cpu.disable_int();
}
fn push_af(cpu: &mut Cpu) {
cpu.push_word(cpu.af());
}
fn or_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
cpu.a |= byte;
cpu.set_sub(false);
cpu.set_zero(cpu.a == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
}
fn rst_30h(cpu: &mut Cpu) {
rst(cpu, 0x0030);
}
fn ld_hl_spi8(cpu: &mut Cpu) {
let sp = cpu.sp as i32;
let byte = cpu.read_u8() as i8;
let byte_i32 = byte as i32;
let result = sp.wrapping_add(byte_i32);
cpu.set_sub(false);
cpu.set_zero(false);
cpu.set_half_carry((sp ^ byte_i32 ^ result) & 0x10 == 0x10);
cpu.set_carry((sp ^ byte_i32 ^ result) & 0x100 == 0x100);
cpu.set_hl(result as u16);
}
fn ld_sp_hl(cpu: &mut Cpu) {
cpu.sp = cpu.hl();
}
fn ld_a_mu16(cpu: &mut Cpu) {
let word = cpu.read_u16();
let byte = cpu.mmu.read(word);
cpu.a = byte;
}
fn ei(cpu: &mut Cpu) {
cpu.enable_int();
}
fn cp_a_u8(cpu: &mut Cpu) {
let byte = cpu.read_u8();
sub_set_flags(cpu, cpu.a, byte);
}
fn rst_38h(cpu: &mut Cpu) {
rst(cpu, 0x0038);
}
fn rlc_b(cpu: &mut Cpu) {
cpu.b = rlc(cpu, cpu.b);
}
fn rlc_c(cpu: &mut Cpu) {
cpu.c = rlc(cpu, cpu.c);}
fn rlc_d(cpu: &mut Cpu) {
cpu.d = rlc(cpu, cpu.d);
}
fn rlc_e(cpu: &mut Cpu) {
cpu.e = rlc(cpu, cpu.e);
}
fn rlc_h(cpu: &mut Cpu) {
cpu.h = rlc(cpu, cpu.h);
}
fn rlc_l(cpu: &mut Cpu) {
cpu.l = rlc(cpu, cpu.l);
}
fn rlc_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = rlc(cpu, byte);
cpu.mmu.write(hl, result);
}
fn rlc_a(cpu: &mut Cpu) {
cpu.a = rlc(cpu, cpu.a);
}
fn rrc_b(cpu: &mut Cpu) {
cpu.b = rrc(cpu, cpu.b);
}
fn rrc_c(cpu: &mut Cpu) {
cpu.c = rrc(cpu, cpu.c);
}
fn rrc_d(cpu: &mut Cpu) {
cpu.d = rrc(cpu, cpu.d);
}
fn rrc_e(cpu: &mut Cpu) {
cpu.e = rrc(cpu, cpu.e);
}
fn rrc_h(cpu: &mut Cpu) {
cpu.h = rrc(cpu, cpu.h);
}
fn rrc_l(cpu: &mut Cpu) {
cpu.l = rrc(cpu, cpu.l);
}
fn rrc_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = rrc(cpu, byte);
cpu.mmu.write(hl, result);
}
fn rrc_a(cpu: &mut Cpu) {
cpu.a = rrc(cpu, cpu.a);
}
fn rl_b(cpu: &mut Cpu) {
cpu.b = rl(cpu, cpu.b);
}
fn rl_c(cpu: &mut Cpu) {
cpu.c = rl(cpu, cpu.c);}
fn rl_d(cpu: &mut Cpu) {
cpu.d = rl(cpu, cpu.d);
}
fn rl_e(cpu: &mut Cpu) {
cpu.e = rl(cpu, cpu.e);
}
fn rl_h(cpu: &mut Cpu) {
cpu.h = rl(cpu, cpu.h);
}
fn rl_l(cpu: &mut Cpu) {
cpu.l = rl(cpu, cpu.l);
}
fn rl_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = rl(cpu, byte);
cpu.mmu.write(hl, result);
}
fn rl_a(cpu: &mut Cpu) {
cpu.a = rl(cpu, cpu.a);
}
fn rr_b(cpu: &mut Cpu) {
cpu.b = rr(cpu, cpu.b);
}
fn rr_c(cpu: &mut Cpu) {
cpu.c = rr(cpu, cpu.c);
}
fn rr_d(cpu: &mut Cpu) {
cpu.d = rr(cpu, cpu.d);
}
fn rr_e(cpu: &mut Cpu) {
cpu.e = rr(cpu, cpu.e);
}
fn rr_h(cpu: &mut Cpu) {
cpu.h = rr(cpu, cpu.h);
}
fn rr_l(cpu: &mut Cpu) {
cpu.l = rr(cpu, cpu.l);
}
fn rr_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = rr(cpu, byte);
cpu.mmu.write(hl, result);
}
fn rr_a(cpu: &mut Cpu) {
cpu.a = rr(cpu, cpu.a);
}
fn sla_b(cpu: &mut Cpu) {
cpu.b = sla(cpu, cpu.b);
}
fn sla_c(cpu: &mut Cpu) {
cpu.c = sla(cpu, cpu.c);}
fn sla_d(cpu: &mut Cpu) {
cpu.d = sla(cpu, cpu.d);
}
fn sla_e(cpu: &mut Cpu) {
cpu.e = sla(cpu, cpu.e);
}
fn sla_h(cpu: &mut Cpu) {
cpu.h = sla(cpu, cpu.h);
}
fn sla_l(cpu: &mut Cpu) {
cpu.l = sla(cpu, cpu.l);
}
fn sla_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = sla(cpu, byte);
cpu.mmu.write(hl, result);
}
fn sla_a(cpu: &mut Cpu) {
cpu.a = sla(cpu, cpu.a);
}
fn sra_b(cpu: &mut Cpu) {
cpu.b = sra(cpu, cpu.b);
}
fn sra_c(cpu: &mut Cpu) {
cpu.c = sra(cpu, cpu.c);
}
fn sra_d(cpu: &mut Cpu) {
cpu.d = sra(cpu, cpu.d);
}
fn sra_e(cpu: &mut Cpu) {
cpu.e = sra(cpu, cpu.e);
}
fn sra_h(cpu: &mut Cpu) {
cpu.h = sra(cpu, cpu.h);
}
fn sra_l(cpu: &mut Cpu) {
cpu.l = sra(cpu, cpu.l);
}
fn sra_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = sra(cpu, byte);
cpu.mmu.write(hl, result);
}
fn sra_a(cpu: &mut Cpu) {
cpu.a = sra(cpu, cpu.a);
}
fn swap_b(cpu: &mut Cpu) {
cpu.b = swap(cpu, cpu.b)
}
fn swap_c(cpu: &mut Cpu) {
cpu.c = swap(cpu, cpu.c)}
fn swap_d(cpu: &mut Cpu) {
cpu.d = swap(cpu, cpu.d)
}
fn swap_e(cpu: &mut Cpu) {
cpu.e = swap(cpu, cpu.e)
}
fn swap_h(cpu: &mut Cpu) {
cpu.h = swap(cpu, cpu.h)
}
fn swap_l(cpu: &mut Cpu) {
cpu.l = swap(cpu, cpu.l)
}
fn swap_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = swap(cpu, byte);
cpu.mmu.write(hl, result);
}
fn swap_a(cpu: &mut Cpu) {
cpu.a = swap(cpu, cpu.a)
}
fn srl_b(cpu: &mut Cpu) {
cpu.b = srl(cpu, cpu.b);
}
fn srl_c(cpu: &mut Cpu) {
cpu.c = srl(cpu, cpu.c);
}
fn srl_d(cpu: &mut Cpu) {
cpu.d = srl(cpu, cpu.d);
}
fn srl_e(cpu: &mut Cpu) {
cpu.e = srl(cpu, cpu.e);
}
fn srl_h(cpu: &mut Cpu) {
cpu.h = srl(cpu, cpu.h);
}
fn srl_l(cpu: &mut Cpu) {
cpu.l = srl(cpu, cpu.l);
}
fn srl_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let result = srl(cpu, byte);
cpu.mmu.write(hl, result);
}
fn srl_a(cpu: &mut Cpu) {
cpu.a = srl(cpu, cpu.a);
}
fn bit_0_b(cpu: &mut Cpu) {
bit_b(cpu, 0);
}
fn bit_0_c(cpu: &mut Cpu) {
bit_c(cpu, 0);}
fn bit_0_d(cpu: &mut Cpu) {
bit_d(cpu, 0);
}
fn bit_0_e(cpu: &mut Cpu) {
bit_e(cpu, 0);
}
fn bit_0_h(cpu: &mut Cpu) {
bit_h(cpu, 0);
}
fn bit_0_l(cpu: &mut Cpu) {
bit_l(cpu, 0);
}
fn bit_0_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 0);
}
fn bit_0_a(cpu: &mut Cpu) {
bit_a(cpu, 0);
}
fn bit_1_b(cpu: &mut Cpu) {
bit_b(cpu, 1);
}
fn bit_1_c(cpu: &mut Cpu) {
bit_c(cpu, 1);
}
fn bit_1_d(cpu: &mut Cpu) {
bit_d(cpu, 1);
}
fn bit_1_e(cpu: &mut Cpu) {
bit_e(cpu, 1);
}
fn bit_1_h(cpu: &mut Cpu) {
bit_h(cpu, 1);
}
fn bit_1_l(cpu: &mut Cpu) {
bit_l(cpu, 1);
}
fn bit_1_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 1);
}
fn bit_1_a(cpu: &mut Cpu) {
bit_a(cpu, 1);
}
fn bit_2_b(cpu: &mut Cpu) {
bit_b(cpu, 2);
}
fn bit_2_c(cpu: &mut Cpu) {
bit_c(cpu, 2);
}
fn bit_2_d(cpu: &mut Cpu) {
bit_d(cpu, 2);
}
fn bit_2_e(cpu: &mut Cpu) {
bit_e(cpu, 2);
}
fn bit_2_h(cpu: &mut Cpu) {
bit_h(cpu, 2);
}
fn bit_2_l(cpu: &mut Cpu) {
bit_l(cpu, 2);
}
fn bit_2_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 2);
}
fn bit_2_a(cpu: &mut Cpu) {
bit_a(cpu, 2);
}
fn bit_3_b(cpu: &mut Cpu) {
bit_b(cpu, 3);
}
fn bit_3_c(cpu: &mut Cpu) {
bit_c(cpu, 3);
}
fn bit_3_d(cpu: &mut Cpu) {
bit_d(cpu, 3);
}
fn bit_3_e(cpu: &mut Cpu) {
bit_e(cpu, 3);
}
fn bit_3_h(cpu: &mut Cpu) {
bit_h(cpu, 3);
}
fn bit_3_l(cpu: &mut Cpu) {
bit_l(cpu, 3);
}
fn bit_3_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 3);
}
fn bit_3_a(cpu: &mut Cpu) {
bit_a(cpu, 3);
}
fn bit_4_b(cpu: &mut Cpu) {
bit_b(cpu, 4);
}
fn bit_4_c(cpu: &mut Cpu) {
bit_c(cpu, 4);
}
fn bit_4_d(cpu: &mut Cpu) {
bit_d(cpu, 4);
}
fn bit_4_e(cpu: &mut Cpu) {
bit_e(cpu, 4);
}
fn bit_4_h(cpu: &mut Cpu) {
bit_h(cpu, 4);}
fn bit_4_l(cpu: &mut Cpu) {
bit_l(cpu, 4);
}
fn bit_4_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 4);
}
fn bit_4_a(cpu: &mut Cpu) {
bit_a(cpu, 4);
}
fn bit_5_b(cpu: &mut Cpu) {
bit_b(cpu, 5);
}
fn bit_5_c(cpu: &mut Cpu) {
bit_c(cpu, 5);
}
fn bit_5_d(cpu: &mut Cpu) {
bit_d(cpu, 5);
}
fn bit_5_e(cpu: &mut Cpu) {
bit_e(cpu, 5);
}
fn bit_5_h(cpu: &mut Cpu) {
bit_h(cpu, 5);
}
fn bit_5_l(cpu: &mut Cpu) {
bit_l(cpu, 5);
}
fn bit_5_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 5);
}
fn bit_5_a(cpu: &mut Cpu) {
bit_a(cpu, 5);
}
fn bit_6_b(cpu: &mut Cpu) {
bit_b(cpu, 6);
}
fn bit_6_c(cpu: &mut Cpu) {
bit_c(cpu, 6);
}
fn bit_6_d(cpu: &mut Cpu) {
bit_d(cpu, 6);
}
fn bit_6_e(cpu: &mut Cpu) {
bit_e(cpu, 6);
}
fn bit_6_h(cpu: &mut Cpu) {
bit_h(cpu, 6);
}
fn bit_6_l(cpu: &mut Cpu) {
bit_l(cpu, 6);
}
fn bit_6_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 6);
}
fn bit_6_a(cpu: &mut Cpu) {
bit_a(cpu, 6);
}
fn bit_7_b(cpu: &mut Cpu) {
bit_b(cpu, 7);
}
fn bit_7_c(cpu: &mut Cpu) {
bit_c(cpu, 7);
}
fn bit_7_d(cpu: &mut Cpu) {
bit_d(cpu, 7);
}
fn bit_7_e(cpu: &mut Cpu) {
bit_e(cpu, 7);
}
fn bit_7_h(cpu: &mut Cpu) {
bit_h(cpu, 7);
}
fn bit_7_l(cpu: &mut Cpu) {
bit_l(cpu, 7);
}
fn bit_7_mhl(cpu: &mut Cpu) {
bit_mhl(cpu, 7);
}
fn bit_7_a(cpu: &mut Cpu) {
bit_a(cpu, 7);
}
fn res_0_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 0);
}
fn res_0_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 0);
}
fn res_0_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 0);
}
fn res_0_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 0);
}
fn res_0_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 0);
}
fn res_0_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 0);
}
fn res_0_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 0);
cpu.mmu.write(hl, value);
}
fn res_0_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 0);
}
fn res_1_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 1);
}
fn res_1_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 1);
}
fn res_1_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 1);
}
fn res_1_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 1);
}
fn res_1_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 1);
}
fn res_1_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 1);
}
fn res_1_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 1);
cpu.mmu.write(hl, value);
}
fn res_1_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 1);
}
fn res_2_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 2);
}
fn res_2_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 2);
}
fn res_2_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 2);
}
fn res_2_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 2);
}
fn res_2_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 2);
}
fn res_2_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 2);
}
fn res_2_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 2);
cpu.mmu.write(hl, value);
}
fn res_2_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 2);
}
fn res_3_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 3);
}
fn res_3_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 3);
}
fn res_3_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 3);
}
fn res_3_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 3);
}
fn res_3_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 3);
}
fn res_3_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 3);
}
fn res_3_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 3);
cpu.mmu.write(hl, value);
}
fn res_3_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 3);
}
fn res_4_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 4);
}
fn res_4_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 4);
}
fn res_4_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 4);
}
fn res_4_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 4);
}
fn res_4_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 4);
}
fn res_4_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 4);
}
fn res_4_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 4);
cpu.mmu.write(hl, value);
}
fn res_4_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 4);
}
fn res_5_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 5);
}
fn res_5_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 5);
}
fn res_5_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 5);
}
fn res_5_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 5);
}
fn res_5_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 5);
}
fn res_5_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 5);
}
fn res_5_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 5);
cpu.mmu.write(hl, value);
}
fn res_5_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 5);
}
fn res_6_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 6);
}
fn res_6_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 6);
}
fn res_6_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 6);
}
fn res_6_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 6);
}
fn res_6_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 6);
}
fn res_6_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 6);
}
fn res_6_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 6);
cpu.mmu.write(hl, value);
}
fn res_6_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 6);
}
fn res_7_b(cpu: &mut Cpu) {
cpu.b = res(cpu.b, 7);
}
fn res_7_c(cpu: &mut Cpu) {
cpu.c = res(cpu.c, 7);
}
fn res_7_d(cpu: &mut Cpu) {
cpu.d = res(cpu.d, 7);
}
fn res_7_e(cpu: &mut Cpu) {
cpu.e = res(cpu.e, 7);
}
fn res_7_h(cpu: &mut Cpu) {
cpu.h = res(cpu.h, 7);
}
fn res_7_l(cpu: &mut Cpu) {
cpu.l = res(cpu.l, 7);
}
fn res_7_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = res(byte, 7);
cpu.mmu.write(hl, value);
}
fn res_7_a(cpu: &mut Cpu) {
cpu.a = res(cpu.a, 7);
}
fn set_0_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 0);
}
fn set_0_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 0);
}
fn set_0_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 0);
}
fn set_0_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 0);
}
fn set_0_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 0);
}
fn set_0_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 0);
}
fn set_0_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 0);
cpu.mmu.write(hl, value);
}
fn set_0_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 0);
}
fn set_1_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 1);
}
fn set_1_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 1);
}
fn set_1_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 1);
}
fn set_1_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 1);
}
fn set_1_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 1);
}
fn set_1_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 1);
}
fn set_1_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 1);
cpu.mmu.write(hl, value);
}
fn set_1_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 1);
}
fn set_2_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 2);
}
fn set_2_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 2);
}
fn set_2_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 2);
}
fn set_2_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 2);
}
fn set_2_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 2);
}
fn set_2_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 2);
}
fn set_2_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 2);
cpu.mmu.write(hl, value);
}
fn set_2_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 2);
}
fn set_3_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 3);
}
fn set_3_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 3);
}
fn set_3_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 3);
}
fn set_3_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 3);
}
fn set_3_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 3);
}
fn set_3_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 3);
}
fn set_3_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 3);
cpu.mmu.write(hl, value);
}
fn set_3_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 3);
}
fn set_4_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 4);
}
fn set_4_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 4);
}
fn set_4_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 4);
}
fn set_4_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 4);
}
fn set_4_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 4);
}
fn set_4_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 4);
}
fn set_4_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 4);
cpu.mmu.write(hl, value);
}
fn set_4_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 4);
}
fn set_5_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 5);
}
fn set_5_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 5);
}
fn set_5_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 5);
}
fn set_5_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 5);
}
fn set_5_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 5);
}
fn set_5_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 5);
}
fn set_5_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 5);
cpu.mmu.write(hl, value);
}
fn set_5_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 5);
}
fn set_6_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 6);
}
fn set_6_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 6);
}
fn set_6_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 6);
}
fn set_6_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 6);
}
fn set_6_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 6);
}
fn set_6_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 6);
}
fn set_6_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 6);
cpu.mmu.write(hl, value);
}
fn set_6_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 6);
}
fn set_7_b(cpu: &mut Cpu) {
cpu.b = set(cpu.b, 7);
}
fn set_7_c(cpu: &mut Cpu) {
cpu.c = set(cpu.c, 7);
}
fn set_7_d(cpu: &mut Cpu) {
cpu.d = set(cpu.d, 7);
}
fn set_7_e(cpu: &mut Cpu) {
cpu.e = set(cpu.e, 7);
}
fn set_7_h(cpu: &mut Cpu) {
cpu.h = set(cpu.h, 7);
}
fn set_7_l(cpu: &mut Cpu) {
cpu.l = set(cpu.l, 7);
}
fn set_7_mhl(cpu: &mut Cpu) {
let hl = cpu.hl();
let byte = cpu.mmu.read(hl);
let value = set(byte, 7);
cpu.mmu.write(hl, value);
}
fn set_7_a(cpu: &mut Cpu) {
cpu.a = set(cpu.a, 7);
}
/// Helper function to set one bit in a u8.
fn set(value: u8, bit: u8) -> u8 {
value | (1u8 << (bit as usize))
}
/// Helper function to clear one bit in a u8.
fn res(value: u8, bit: u8) -> u8 {
value & !(1u8 << (bit as usize))
}
/// Helper function that rotates (shifts) left the given
/// byte (probably from a register) and updates the
/// proper flag registers.
fn rl(cpu: &mut Cpu, value: u8) -> u8 {
let carry = cpu.carry();
cpu.set_carry((value & 0x80) == 0x80);
let result = (value << 1) | carry as u8;
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
result
}
fn rlc(cpu: &mut Cpu, value: u8) -> u8 {
cpu.set_carry((value & 0x80) == 0x80);
let result = (value << 1) | (value >> 7);
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
result
}
/// Helper function that rotates (shifts) right the given
/// byte (probably from a register) and updates the
/// proper flag registers.
fn rr(cpu: &mut Cpu, value: u8) -> u8 {
let carry = cpu.carry();
cpu.set_carry((value & 0x1) == 0x1);
let result = (value >> 1) | ((carry as u8) << 7);
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
result
}
fn rrc(cpu: &mut Cpu, value: u8) -> u8 {
cpu.set_carry((value & 0x1) == 0x1);
let result = (value >> 1) | (value << 7);
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
result
}
/// Helper function to test one bit in a u8.
/// Returns true if bit is 0.
fn bit_zero(val: u8, bit: u8) -> bool {
(val & (1u8 << (bit as usize))) == 0
}
fn bit_a(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.a, bit));
cpu.set_half_carry(true);
}
fn bit_b(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.b, bit));
cpu.set_half_carry(true);
}
fn bit_c(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.c, bit));
cpu.set_half_carry(true);
}
fn bit_d(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.d, bit));
cpu.set_half_carry(true);
}
fn bit_e(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false); cpu.set_zero(bit_zero(cpu.e, bit));
cpu.set_half_carry(true);
}
fn bit_h(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.h, bit));
cpu.set_half_carry(true);
}
fn bit_l(cpu: &mut Cpu, bit: u8) {
cpu.set_sub(false);
cpu.set_zero(bit_zero(cpu.l, bit));
cpu.set_half_carry(true);
}
fn bit_mhl(cpu: &mut Cpu, bit: u8) {
let byte = cpu.mmu.read(cpu.hl());
cpu.set_sub(false);
cpu.set_zero(bit_zero(byte, bit));
cpu.set_half_carry(true);
}
fn add_set_flags(cpu: &mut Cpu, first: u8, second: u8) -> u8 {
let first = first as u32;
let second = second as u32;
let result = first.wrapping_add(second);
let result_b = result as u8;
cpu.set_sub(false);
cpu.set_zero(result_b == 0);
cpu.set_half_carry((first ^ second ^ result) & 0x10 == 0x10);
cpu.set_carry((result & 0x100) == 0x100);
result_b
}
fn add_carry_set_flags(cpu: &mut Cpu, first: u8, second: u8) -> u8 {
let first = first as u32;
let second = second as u32;
let carry = cpu.carry() as u32;
let result = first.wrapping_add(second).wrapping_add(carry);
let result_b = result as u8;
cpu.set_sub(false);
cpu.set_zero(result_b == 0);
cpu.set_half_carry((first ^ second ^ result) & 0x10 == 0x10);
cpu.set_carry((result & 0x100) == 0x100);
result_b
}
fn sub_set_flags(cpu: &mut Cpu, first: u8, second: u8) -> u8 {
let first = first as u32;
let second = second as u32;
let result = first.wrapping_sub(second);
let result_b = result as u8;
cpu.set_sub(true);
cpu.set_zero(result_b == 0);
cpu.set_half_carry((first ^ second ^ result) & 0x10 == 0x10);
cpu.set_carry((result & 0x100) == 0x100);
result_b
}
fn sub_carry_set_flags(cpu: &mut Cpu, first: u8, second: u8) -> u8 { let first = first as u32;
let second = second as u32;
let carry = cpu.carry() as u32;
let result = first.wrapping_sub(second).wrapping_sub(carry);
let result_b = result as u8;
cpu.set_sub(true);
cpu.set_zero(result_b == 0);
cpu.set_half_carry((first ^ second ^ result) & 0x10 == 0x10);
cpu.set_carry((result & 0x100) == 0x100);
result_b
}
fn add_u16_u16(cpu: &mut Cpu, first: u16, second: u16) -> u16 {
let first = first as u32;
let second = second as u32;
let result = first.wrapping_add(second);
cpu.set_sub(false);
cpu.set_half_carry((first ^ second ^ result) & 0x1000 == 0x1000);
cpu.set_carry((result & 0x10000) == 0x10000);
result as u16
}
fn swap(cpu: &mut Cpu, value: u8) -> u8 {
cpu.set_sub(false);
cpu.set_zero(value == 0);
cpu.set_half_carry(false);
cpu.set_carry(false);
(value << 4) | (value >> 4)
}
/// Helper function to shift an `u8` to the left and update CPU
/// flags.
fn sla(cpu: &mut Cpu, value: u8) -> u8 {
let result = value << 1;
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
cpu.set_carry((value & 0x80) == 0x80);
result
}
fn sra(cpu: &mut Cpu, value: u8) -> u8 {
let result = (value >> 1) | (value & 0x80);
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
cpu.set_carry((value & 0x1) == 0x1);
result
}
fn srl(cpu: &mut Cpu, value: u8) -> u8 {
let result = value >> 1;
cpu.set_sub(false);
cpu.set_zero(result == 0);
cpu.set_half_carry(false);
cpu.set_carry((value & 0x1) == 0x1);
result
}
/// Helper function for RST instructions, pushes the
/// current PC to the stack and jumps to the provided
/// address.
fn rst(cpu: &mut Cpu, addr: u16) {
cpu.push_word(cpu.pc);
cpu.pc = addr;
}