mirror of https://github.com/bsnes-emu/bsnes.git
177 lines
3.0 KiB
C++
177 lines
3.0 KiB
C++
auto R65816::op_branch(bool flag, bool value) {
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if(flag != value) {
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L rd.l = readpc();
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} else {
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rd.l = readpc();
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aa.w = regs.pc.d + (int8)rd.l;
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io6(aa.w);
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L io();
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regs.pc.w = aa.w;
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}
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}
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auto R65816::op_bra() {
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rd.l = readpc();
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aa.w = regs.pc.d + (int8)rd.l;
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io6(aa.w);
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L io();
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regs.pc.w = aa.w;
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}
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auto R65816::op_brl() {
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rd.l = readpc();
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rd.h = readpc();
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L io();
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regs.pc.w = regs.pc.d + (int16)rd.w;
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}
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auto R65816::op_jmp_addr() {
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rd.l = readpc();
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L rd.h = readpc();
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regs.pc.w = rd.w;
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}
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auto R65816::op_jmp_long() {
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rd.l = readpc();
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rd.h = readpc();
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L rd.b = readpc();
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regs.pc.d = rd.d & 0xffffff;
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}
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auto R65816::op_jmp_iaddr() {
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aa.l = readpc();
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aa.h = readpc();
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rd.l = readaddr(aa.w + 0);
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L rd.h = readaddr(aa.w + 1);
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regs.pc.w = rd.w;
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}
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auto R65816::op_jmp_iaddrx() {
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aa.l = readpc();
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aa.h = readpc();
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io();
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rd.l = readpbr(aa.w + regs.x.w + 0);
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L rd.h = readpbr(aa.w + regs.x.w + 1);
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regs.pc.w = rd.w;
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}
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auto R65816::op_jmp_iladdr() {
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aa.l = readpc();
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aa.h = readpc();
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rd.l = readaddr(aa.w + 0);
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rd.h = readaddr(aa.w + 1);
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L rd.b = readaddr(aa.w + 2);
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regs.pc.d = rd.d & 0xffffff;
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}
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auto R65816::op_jsr_addr() {
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aa.l = readpc();
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aa.h = readpc();
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io();
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regs.pc.w--;
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writestack(regs.pc.h);
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L writestack(regs.pc.l);
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regs.pc.w = aa.w;
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}
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auto R65816::op_jsr_long_e() {
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aa.l = readpc();
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aa.h = readpc();
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writestackn(regs.pc.b);
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io();
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aa.b = readpc();
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regs.pc.w--;
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writestackn(regs.pc.h);
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L writestackn(regs.pc.l);
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regs.pc.d = aa.d & 0xffffff;
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regs.s.h = 0x01;
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}
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auto R65816::op_jsr_long_n() {
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aa.l = readpc();
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aa.h = readpc();
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writestackn(regs.pc.b);
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io();
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aa.b = readpc();
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regs.pc.w--;
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writestackn(regs.pc.h);
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L writestackn(regs.pc.l);
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regs.pc.d = aa.d & 0xffffff;
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}
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auto R65816::op_jsr_iaddrx_e() {
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aa.l = readpc();
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writestackn(regs.pc.h);
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writestackn(regs.pc.l);
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aa.h = readpc();
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io();
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rd.l = readpbr(aa.w + regs.x.w + 0);
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L rd.h = readpbr(aa.w + regs.x.w + 1);
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regs.pc.w = rd.w;
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regs.s.h = 0x01;
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}
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auto R65816::op_jsr_iaddrx_n() {
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aa.l = readpc();
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writestackn(regs.pc.h);
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writestackn(regs.pc.l);
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aa.h = readpc();
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io();
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rd.l = readpbr(aa.w + regs.x.w + 0);
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L rd.h = readpbr(aa.w + regs.x.w + 1);
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regs.pc.w = rd.w;
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}
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auto R65816::op_rti_e() {
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io();
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io();
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regs.p = readstack() | 0x30;
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rd.l = readstack();
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L rd.h = readstack();
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regs.pc.w = rd.w;
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}
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auto R65816::op_rti_n() {
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io();
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io();
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regs.p = 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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rd.l = readstack();
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rd.h = readstack();
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L rd.b = readstack();
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regs.pc.d = rd.d & 0xffffff;
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}
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auto R65816::op_rts() {
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io();
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io();
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rd.l = readstack();
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rd.h = readstack();
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L io();
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regs.pc.w = ++rd.w;
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}
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auto R65816::op_rtl_e() {
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io();
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io();
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rd.l = readstackn();
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rd.h = readstackn();
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L rd.b = readstackn();
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regs.pc.b = rd.b;
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regs.pc.w = ++rd.w;
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regs.s.h = 0x01;
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}
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auto R65816::op_rtl_n() {
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io();
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io();
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rd.l = readstackn();
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rd.h = readstackn();
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L rd.b = readstackn();
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regs.pc.b = rd.b;
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regs.pc.w = ++rd.w;
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}
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