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This commit is contained in:
Anselm Levskaya 2011-12-17 01:17:40 -08:00
parent 8e98d9f3fe
commit 016740100a
1 changed files with 86 additions and 80 deletions
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166
cpux86-ta.js
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@ -5,27 +5,29 @@ var ba = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 0, 1, 2, 3,
var ca = [0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4, 5, 6, 7, 8, 0, 1, 2, 3, 4];
function CPU_X86() {
var i, da;
var i, tlb_size;
this.regs = new Array();
for (i = 0; i < 8; i++) { this.regs[i] = 0;} //8 registers
this.eip = 0;
this.cc_op = 0;
this.cc_dst = 0;
this.cc_src = 0;
this.cc_op2 = 0;
this.cc_dst2 = 0;
this.df = 1;
this.eflags = 0x2;
for (i = 0; i < 8; i++) {
this.regs[i] = 0;
}
this.eip = 0;
this.cc_op = 0;
this.cc_dst = 0;
this.cc_src = 0;
this.cc_op2 = 0;
this.cc_dst2 = 0;
this.df = 1;
this.eflags = 0x2;
this.cycle_count = 0;
this.hard_irq = 0;
this.hard_intno = -1;
this.cpl = 0;
this.cr0 = (1 << 0);
this.cr2 = 0;
this.cr3 = 0;
this.cr4 = 0;
this.idt = {base: 0,limit: 0};
this.gdt = {base: 0,limit: 0};
this.hard_irq = 0;
this.hard_intno = -1;
this.cpl = 0;
this.cr0 = (1 << 0);
this.cr2 = 0;
this.cr3 = 0;
this.cr4 = 0;
this.idt = {base: 0,limit: 0};
this.gdt = {base: 0,limit: 0};
this.segs = new Array();
for (i = 0; i < 7; i++) {this.segs[i] = {selector: 0, base: 0, limit: 0, flags: 0}; }
@ -36,12 +38,13 @@ function CPU_X86() {
this.ldt = {selector: 0,base: 0,limit: 0,flags: 0};
this.halted = 0;
this.phys_mem = null;
da = 0x100000;
this.tlb_read_kernel = new Int32Array(da);
this.tlb_write_kernel = new Int32Array(da);
this.tlb_read_user = new Int32Array(da);
this.tlb_write_user = new Int32Array(da);
for (i = 0; i < da; i++) {
tlb_size = 0x100000;
this.tlb_read_kernel = new Int32Array(tlb_size);
this.tlb_write_kernel = new Int32Array(tlb_size);
this.tlb_read_user = new Int32Array(tlb_size);
this.tlb_write_user = new Int32Array(tlb_size);
for (i = 0; i < tlb_size; i++) {
this.tlb_read_kernel[i] = -1;
this.tlb_write_kernel[i] = -1;
this.tlb_read_user[i] = -1;
@ -60,7 +63,8 @@ CPU_X86.prototype.phys_mem_resize = function(new_mem_size) {
this.phys_mem32 = new Int32Array(this.phys_mem, 0, new_mem_size / 4);
};
CPU_X86.prototype.ld8_phys = function(fa) { return this.phys_mem8[fa]; };
CPU_X
86.prototype.ld8_phys = function(fa) { return this.phys_mem8[fa]; };
CPU_X86.prototype.st8_phys = function(fa, ga) { this.phys_mem8[fa] = ga; };
CPU_X86.prototype.ld32_phys = function(fa) { return this.phys_mem32[fa >> 2]; };
CPU_X86.prototype.st32_phys = function(fa, ga) { this.phys_mem32[fa >> 2] = ga; };
@ -202,16 +206,16 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
var Na, Oa, Pa, Qa, Ra, Sa;
var phys_mem8, Ua;
var phys_mem16, phys_mem32;
var tlb_read_kernel, tlb_write_kernel, tlb_read_user, tlb_write_user, bb, cb;
var tlb_read_kernel, tlb_write_kernel, tlb_read_user, tlb_write_user, _tlb_read_, _tlb_write_;
function db() {
var eb;
fb(fa, 0, cpu.cpl == 3);
eb = bb[fa >>> 12] ^ fa;
eb = _tlb_read_[fa >>> 12] ^ fa;
return phys_mem8[eb];
}
function gb() {
var Ua;
return (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
return (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
function hb() {
var ga;
@ -223,7 +227,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
}
function ib() {
var Ua;
return (((Ua = bb[fa >>> 12]) | fa) & 1 ? hb() : phys_mem16[(fa ^ Ua) >> 1]);
return (((Ua = _tlb_read_[fa >>> 12]) | fa) & 1 ? hb() : phys_mem16[(fa ^ Ua) >> 1]);
}
function jb() {
var ga;
@ -239,17 +243,17 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
}
function kb() {
var Ua;
return (((Ua = bb[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
return (((Ua = _tlb_read_[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
}
function lb() {
var eb;
fb(fa, 1, cpu.cpl == 3);
eb = cb[fa >>> 12] ^ fa;
eb = _tlb_write_[fa >>> 12] ^ fa;
return phys_mem8[eb];
}
function mb() {
var eb;
return ((eb = cb[fa >>> 12]) == -1) ? lb() : phys_mem8[fa ^ eb];
return ((eb = _tlb_write_[fa >>> 12]) == -1) ? lb() : phys_mem8[fa ^ eb];
}
function nb() {
var ga;
@ -261,7 +265,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
}
function ob() {
var eb;
return ((eb = cb[fa >>> 12]) | fa) & 1 ? nb() : phys_mem16[(fa ^ eb) >> 1];
return ((eb = _tlb_write_[fa >>> 12]) | fa) & 1 ? nb() : phys_mem16[(fa ^ eb) >> 1];
}
function pb() {
var ga;
@ -277,18 +281,18 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
}
function qb() {
var eb;
return ((eb = cb[fa >>> 12]) | fa) & 3 ? pb() : phys_mem32[(fa ^ eb) >> 2];
return ((eb = _tlb_write_[fa >>> 12]) | fa) & 3 ? pb() : phys_mem32[(fa ^ eb) >> 2];
}
function rb(ga) {
var eb;
fb(fa, 1, cpu.cpl == 3);
eb = cb[fa >>> 12] ^ fa;
eb = _tlb_write_[fa >>> 12] ^ fa;
phys_mem8[eb] = ga;
}
function sb(ga) {
var Ua;
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if (Ua == -1) {
rb(ga);
} else {
@ -305,7 +309,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
function ub(ga) {
var Ua;
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if ((Ua | fa) & 1) {
tb(ga);
} else {
@ -326,7 +330,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
function wb(ga) {
var Ua;
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if ((Ua | fa) & 3) {
vb(ga);
} else {
@ -1941,26 +1945,26 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
function rd(sd) {
cpu.cpl = sd;
if (cpu.cpl == 3) {
bb = tlb_read_user;
cb = tlb_write_user;
_tlb_read_ = tlb_read_user;
_tlb_write_ = tlb_write_user;
} else {
bb = tlb_read_kernel;
cb = tlb_write_kernel;
_tlb_read_ = tlb_read_kernel;
_tlb_write_ = tlb_write_kernel;
}
}
function td(fa, ud) {
var eb;
if (ud) {
eb = cb[fa >>> 12];
eb = _tlb_write_[fa >>> 12];
} else {
eb = bb[fa >>> 12];
eb = _tlb_read_[fa >>> 12];
}
if (eb == -1) {
fb(fa, ud, cpu.cpl == 3);
if (ud) {
eb = cb[fa >>> 12];
eb = _tlb_write_[fa >>> 12];
} else {
eb = bb[fa >>> 12];
eb = _tlb_read_[fa >>> 12];
}
}
return eb ^ fa;
@ -2024,7 +2028,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
b = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
b = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
break;
case 0x67:
@ -2037,7 +2041,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
b = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
b = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
break;
case 0x91:
@ -2275,7 +2279,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2297,7 +2301,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2366,7 +2370,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2388,7 +2392,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2445,7 +2449,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2467,7 +2471,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2522,7 +2526,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2544,7 +2548,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2602,7 +2606,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2624,7 +2628,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2702,7 +2706,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
b = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
b = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
switch (b) {
case 0x06:
@ -2805,7 +2809,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2827,7 +2831,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -2881,7 +2885,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Ea = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Ea = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if (Da & 0x0080) {
switch (Ea >> 6) {
@ -2903,7 +2907,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if ((n + 1) > 15)
Dc(6);
fa = (Nb + (n++)) >> 0;
Dd = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
Dd = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
if ((Dd & 7) == 5) {
n += 4;
@ -5387,6 +5391,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
regs[7] = (Yf & ~Xf) | ((Yf + (cpu.df << 2)) & Xf);
}
}
cpu = this;
phys_mem8 = this.phys_mem8;
phys_mem16 = this.phys_mem16;
@ -5395,12 +5400,12 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
tlb_write_user = this.tlb_write_user;
tlb_read_kernel = this.tlb_read_kernel;
tlb_write_kernel = this.tlb_write_kernel;
if (cpu.cpl == 3) {
bb = tlb_read_user;
cb = tlb_write_user;
if (cpu.cpl == 3) { //current privilege level
_tlb_read_ = tlb_read_user;
_tlb_write_ = tlb_write_user;
} else {
bb = tlb_read_kernel;
cb = tlb_write_kernel;
_tlb_read_ = tlb_read_kernel;
_tlb_write_ = tlb_write_kernel;
}
if (cpu.halted) {
if (cpu.hard_irq != 0 && (cpu.eflags & 0x00000200)) {
@ -5433,15 +5438,16 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
}
Kb = 0;
Mb = 0;
Bg: do {
eip = (eip + Kb - Mb) >> 0;
Nb = (eip + Na) >> 0;
Lb = bb[Nb >>> 12];
Lb = _tlb_read_[Nb >>> 12];
if (((Lb | Nb) & 0xfff) >= (4096 - 15 + 1)) {
var Cg;
if (Lb == -1)
fb(Nb, 0, cpu.cpl == 3);
Lb = bb[Nb >>> 12];
Lb = _tlb_read_[Nb >>> 12];
Mb = Kb = Nb ^ Lb;
b = phys_mem8[Kb++];
Cg = Nb & 0xfff;
@ -5451,7 +5457,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
Mb = Kb = this.mem_size;
for (Ha = 0; Ha < ga; Ha++) {
fa = (Nb + Ha) >> 0;
phys_mem8[Kb + Ha] = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
phys_mem8[Kb + Ha] = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
Kb++;
}
@ -5560,7 +5566,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
} else {
fa = Pb(Ea);
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if (Ua == -1) {
rb(ga);
} else {
@ -5577,7 +5583,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
} else {
fa = Pb(Ea);
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if ((Ua | fa) & 3) {
vb(ga);
} else {
@ -5593,7 +5599,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
ga = (regs[Fa & 3] >> ((Fa & 4) << 1));
} else {
fa = Pb(Ea);
ga = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
ga = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
Ga = (Ea >> 3) & 7;
Ua = (Ga & 4) << 1;
@ -5605,7 +5611,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
ga = regs[Ea & 7];
} else {
fa = Pb(Ea);
ga = (((Ua = bb[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
ga = (((Ua = _tlb_read_[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
}
regs[(Ea >> 3) & 7] = ga;
break Fd;
@ -6428,7 +6434,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
if (Qa) {
fa = (regs[4] - 4) >> 0;
{
Ua = cb[fa >>> 12];
Ua = _tlb_write_[fa >>> 12];
if ((Ua | fa) & 3) {
vb(ga);
} else {
@ -6450,7 +6456,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
case 0x5f:
if (Qa) {
fa = regs[4];
ga = (((Ua = bb[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
ga = (((Ua = _tlb_read_[fa >>> 12]) | fa) & 3 ? jb() : phys_mem32[(fa ^ Ua) >> 2]);
regs[4] = (fa + 4) >> 0;
} else {
ga = Ad();
@ -7327,7 +7333,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
ga = (regs[Fa & 3] >> ((Fa & 4) << 1)) & 0xff;
} else {
fa = Pb(Ea);
ga = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
ga = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
regs[Ga] = ga;
break Fd;
@ -7350,7 +7356,7 @@ CPU_X86.prototype.exec_internal = function(ua, va) {
ga = (regs[Fa & 3] >> ((Fa & 4) << 1));
} else {
fa = Pb(Ea);
ga = (((Ua = bb[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
ga = (((Ua = _tlb_read_[fa >>> 12]) == -1) ? db() : phys_mem8[fa ^ Ua]);
}
regs[Ga] = (((ga) << 24) >> 24);
break Fd;