mirror of https://github.com/bsnes-emu/bsnes.git
328 lines
5.6 KiB
C++
328 lines
5.6 KiB
C++
auto R65816::op_nop() {
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L op_io_irq();
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}
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auto R65816::op_wdm() {
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L op_readpc();
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}
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auto R65816::op_xba() {
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op_io();
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L op_io();
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regs.a.l ^= regs.a.h;
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regs.a.h ^= regs.a.l;
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regs.a.l ^= regs.a.h;
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regs.p.n = (regs.a.l & 0x80);
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regs.p.z = (regs.a.l == 0);
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}
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auto R65816::op_move_b(signed adjust) {
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dp = op_readpc();
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sp = op_readpc();
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regs.db = dp;
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rd.l = op_readlong((sp << 16) | regs.x.w);
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op_writelong((dp << 16) | regs.y.w, rd.l);
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op_io();
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regs.x.l += adjust;
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regs.y.l += adjust;
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L op_io();
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if(regs.a.w--) regs.pc.w -= 3;
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}
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auto R65816::op_move_w(signed adjust) {
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dp = op_readpc();
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sp = op_readpc();
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regs.db = dp;
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rd.l = op_readlong((sp << 16) | regs.x.w);
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op_writelong((dp << 16) | regs.y.w, rd.l);
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op_io();
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regs.x.w += adjust;
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regs.y.w += adjust;
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L op_io();
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if(regs.a.w--) regs.pc.w -= 3;
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}
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auto R65816::op_interrupt_e(uint16 vector) {
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op_readpc();
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op_writestack(regs.pc.h);
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op_writestack(regs.pc.l);
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op_writestack(regs.p);
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rd.l = op_readlong(vector + 0);
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regs.pc.b = 0;
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regs.p.i = 1;
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regs.p.d = 0;
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L rd.h = op_readlong(vector + 1);
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regs.pc.w = rd.w;
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}
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auto R65816::op_interrupt_n(uint16 vector) {
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op_readpc();
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op_writestack(regs.pc.b);
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op_writestack(regs.pc.h);
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op_writestack(regs.pc.l);
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op_writestack(regs.p);
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rd.l = op_readlong(vector + 0);
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regs.pc.b = 0x00;
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regs.p.i = 1;
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regs.p.d = 0;
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L rd.h = op_readlong(vector + 1);
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regs.pc.w = rd.w;
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}
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auto R65816::op_stp() {
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while(regs.wai = true) {
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L op_io();
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}
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}
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auto R65816::op_wai() {
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regs.wai = true;
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while(regs.wai) {
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L op_io();
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}
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op_io();
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}
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auto R65816::op_xce() {
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L op_io_irq();
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bool carry = regs.p.c;
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regs.p.c = regs.e;
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regs.e = carry;
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if(regs.e) {
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regs.p.m = 1;
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regs.p.x = 1;
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regs.x.h = 0x00;
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regs.y.h = 0x00;
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regs.s.h = 0x01;
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}
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}
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auto R65816::op_flag(bool& flag, bool value) {
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L op_io_irq();
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flag = value;
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}
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auto R65816::op_pflag_e(bool mode) {
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rd.l = op_readpc();
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L op_io();
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regs.p = (mode ? regs.p | rd.l : regs.p & ~rd.l);
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regs.p.m = 1;
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regs.p.x = 1;
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regs.x.h = 0x00;
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regs.y.h = 0x00;
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}
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auto R65816::op_pflag_n(bool mode) {
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rd.l = op_readpc();
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L op_io();
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regs.p = (mode ? regs.p | rd.l : regs.p & ~rd.l);
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if(regs.p.x) {
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regs.x.h = 0x00;
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regs.y.h = 0x00;
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}
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}
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auto R65816::op_transfer_b(reg16_t& from, reg16_t& to) {
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L op_io_irq();
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to.l = from.l;
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regs.p.n = (to.l & 0x80);
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regs.p.z = (to.l == 0);
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}
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auto R65816::op_transfer_w(reg16_t& from, reg16_t& to) {
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L op_io_irq();
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to.w = from.w;
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regs.p.n = (to.w & 0x8000);
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regs.p.z = (to.w == 0);
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}
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auto R65816::op_tcs_e() {
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L op_io_irq();
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regs.s.l = regs.a.l;
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}
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auto R65816::op_tcs_n() {
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L op_io_irq();
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regs.s.w = regs.a.w;
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}
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auto R65816::op_tsx_b() {
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L op_io_irq();
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regs.x.l = regs.s.l;
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regs.p.n = (regs.x.l & 0x80);
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regs.p.z = (regs.x.l == 0);
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}
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auto R65816::op_tsx_w() {
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L op_io_irq();
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regs.x.w = regs.s.w;
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regs.p.n = (regs.x.w & 0x8000);
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regs.p.z = (regs.x.w == 0);
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}
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auto R65816::op_txs_e() {
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L op_io_irq();
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regs.s.l = regs.x.l;
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}
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auto R65816::op_txs_n() {
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L op_io_irq();
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regs.s.w = regs.x.w;
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}
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auto R65816::op_push_b(reg16_t& reg) {
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op_io();
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L op_writestack(reg.l);
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}
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auto R65816::op_push_w(reg16_t& reg) {
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op_io();
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op_writestack(reg.h);
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L op_writestack(reg.l);
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}
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auto R65816::op_phd_e() {
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op_io();
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op_writestackn(regs.d.h);
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L op_writestackn(regs.d.l);
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regs.s.h = 0x01;
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}
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auto R65816::op_phd_n() {
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op_io();
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op_writestackn(regs.d.h);
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L op_writestackn(regs.d.l);
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}
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auto R65816::op_phb() {
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op_io();
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L op_writestack(regs.db);
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}
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auto R65816::op_phk() {
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op_io();
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L op_writestack(regs.pc.b);
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}
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auto R65816::op_php() {
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op_io();
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L op_writestack(regs.p);
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}
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auto R65816::op_pull_b(reg16_t& reg) {
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op_io();
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op_io();
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L reg.l = op_readstack();
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regs.p.n = (reg.l & 0x80);
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regs.p.z = (reg.l == 0);
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}
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auto R65816::op_pull_w(reg16_t& reg) {
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op_io();
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op_io();
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reg.l = op_readstack();
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L reg.h = op_readstack();
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regs.p.n = (reg.w & 0x8000);
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regs.p.z = (reg.w == 0);
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}
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auto R65816::op_pld_e() {
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op_io();
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op_io();
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regs.d.l = op_readstackn();
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L regs.d.h = op_readstackn();
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regs.p.n = (regs.d.w & 0x8000);
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regs.p.z = (regs.d.w == 0);
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regs.s.h = 0x01;
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}
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auto R65816::op_pld_n() {
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op_io();
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op_io();
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regs.d.l = op_readstackn();
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L regs.d.h = op_readstackn();
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regs.p.n = (regs.d.w & 0x8000);
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regs.p.z = (regs.d.w == 0);
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}
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auto R65816::op_plb() {
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op_io();
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op_io();
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L regs.db = op_readstack();
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regs.p.n = (regs.db & 0x80);
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regs.p.z = (regs.db == 0);
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}
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auto R65816::op_plp_e() {
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op_io();
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op_io();
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L regs.p = op_readstack() | 0x30;
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if(regs.p.x) {
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regs.x.h = 0x00;
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regs.y.h = 0x00;
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}
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}
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auto R65816::op_plp_n() {
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op_io();
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op_io();
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L regs.p = op_readstack();
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if(regs.p.x) {
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regs.x.h = 0x00;
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regs.y.h = 0x00;
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}
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}
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auto R65816::op_pea_e() {
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aa.l = op_readpc();
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aa.h = op_readpc();
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op_writestackn(aa.h);
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L op_writestackn(aa.l);
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regs.s.h = 0x01;
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}
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auto R65816::op_pea_n() {
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aa.l = op_readpc();
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aa.h = op_readpc();
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op_writestackn(aa.h);
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L op_writestackn(aa.l);
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}
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auto R65816::op_pei_e() {
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dp = op_readpc();
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op_io_cond2();
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aa.l = op_readdp(dp + 0);
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aa.h = op_readdp(dp + 1);
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op_writestackn(aa.h);
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L op_writestackn(aa.l);
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regs.s.h = 0x01;
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}
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auto R65816::op_pei_n() {
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dp = op_readpc();
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op_io_cond2();
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aa.l = op_readdp(dp + 0);
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aa.h = op_readdp(dp + 1);
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op_writestackn(aa.h);
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L op_writestackn(aa.l);
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}
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auto R65816::op_per_e() {
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aa.l = op_readpc();
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aa.h = op_readpc();
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op_io();
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rd.w = regs.pc.d + (int16)aa.w;
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op_writestackn(rd.h);
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L op_writestackn(rd.l);
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regs.s.h = 0x01;
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}
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auto R65816::op_per_n() {
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aa.l = op_readpc();
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aa.h = op_readpc();
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op_io();
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rd.w = regs.pc.d + (int16)aa.w;
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op_writestackn(rd.h);
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L op_writestackn(rd.l);
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}
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