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deobfuscated other devices a little bit

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This commit is contained in:
Anselm Levskaya 2011-12-23 19:28:34 -08:00
parent 1bb2a03991
commit a91f68e0e9
5 changed files with 118 additions and 99 deletions
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48
CMOS.js
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@ -3,43 +3,43 @@ Fabrix - An annotated version of the original JSLinux which is Copyright (c) 201
Clock Emulator Clock Emulator
*/ */
function Lg(a) { return ((a / 10) << 4) | (a % 10);} function formatter(a) { return ((a / 10) << 4) | (a % 10);}
function CMOS(Ng) { function CMOS(PC) {
var Og, d; var time_array, d;
Og = new Uint8Array(128); time_array = new Uint8Array(128);
this.cmos_data = Og; this.cmos_data = time_array;
this.cmos_index = 0; this.cmos_index = 0;
d = new Date(); d = new Date();
Og[0] = Lg(d.getUTCSeconds()); time_array[0] = formatter(d.getUTCSeconds());
Og[2] = Lg(d.getUTCMinutes()); time_array[2] = formatter(d.getUTCMinutes());
Og[4] = Lg(d.getUTCHours()); time_array[4] = formatter(d.getUTCHours());
Og[6] = Lg(d.getUTCDay()); time_array[6] = formatter(d.getUTCDay());
Og[7] = Lg(d.getUTCDate()); time_array[7] = formatter(d.getUTCDate());
Og[8] = Lg(d.getUTCMonth() + 1); time_array[8] = formatter(d.getUTCMonth() + 1);
Og[9] = Lg(d.getUTCFullYear() % 100); time_array[9] = formatter(d.getUTCFullYear() % 100);
Og[10] = 0x26; time_array[10] = 0x26;
Og[11] = 0x02; time_array[11] = 0x02;
Og[12] = 0x00; time_array[12] = 0x00;
Og[13] = 0x80; time_array[13] = 0x80;
Og[0x14] = 0x02; time_array[0x14] = 0x02;
Ng.register_ioport_write(0x70, 2, 1, this.ioport_write.bind(this)); PC.register_ioport_write(0x70, 2, 1, this.ioport_write.bind(this));
Ng.register_ioport_read(0x70, 2, 1, this.ioport_read.bind(this)); PC.register_ioport_read(0x70, 2, 1, this.ioport_read.bind(this));
} }
CMOS.prototype.ioport_write = function(mem8_loc, Ig) { CMOS.prototype.ioport_write = function(mem8_loc, data) {
if (mem8_loc == 0x70) { if (mem8_loc == 0x70) {
this.cmos_index = Ig & 0x7f; this.cmos_index = data & 0x7f;
} }
}; };
CMOS.prototype.ioport_read = function(mem8_loc) { CMOS.prototype.ioport_read = function(mem8_loc) {
var Pg; var data;
if (mem8_loc == 0x70) { if (mem8_loc == 0x70) {
return 0xff; return 0xff;
} else { } else {
Pg = this.cmos_data[this.cmos_index]; data = this.cmos_data[this.cmos_index];
if (this.cmos_index == 10) if (this.cmos_index == 10)
this.cmos_data[10] ^= 0x80; this.cmos_data[10] ^= 0x80;
else if (this.cmos_index == 12) else if (this.cmos_index == 12)
this.cmos_data[12] = 0x00; this.cmos_data[12] = 0x00;
return Pg; return data;
} }
}; };

10
KBD.js
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@ -3,10 +3,10 @@ Fabrix - An annotated version of the original JSLinux which is Copyright (c) 201
Keyboard Device Emulator Keyboard Device Emulator
*/ */
function KBD(Ng, ph) { function KBD(PC, reset_callback) {
Ng.register_ioport_read(0x64, 1, 1, this.read_status.bind(this)); PC.register_ioport_read(0x64, 1, 1, this.read_status.bind(this));
Ng.register_ioport_write(0x64, 1, 1, this.write_command.bind(this)); PC.register_ioport_write(0x64, 1, 1, this.write_command.bind(this));
this.reset_request = ph; this.reset_request = reset_callback;
} }
KBD.prototype.read_status = function(mem8_loc) { KBD.prototype.read_status = function(mem8_loc) {
return 0; return 0;
@ -20,3 +20,5 @@ KBD.prototype.write_command = function(mem8_loc, x) {
break; break;
} }
}; };

134
PCEmulator.js
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@ -38,30 +38,32 @@ PCEmulator.prototype.load_binary = function(Gg, ha) { return this.cpu.load_binar
PCEmulator.prototype.start = function() { setTimeout(this.timer_func.bind(this), 10); }; PCEmulator.prototype.start = function() { setTimeout(this.timer_func.bind(this), 10); };
PCEmulator.prototype.timer_func = function() { PCEmulator.prototype.timer_func = function() {
var La, vh, wh, xh, yh, Ng, cpu; var exit_status, Ncycles, do_reset, err_on_exit, PC, cpu;
Ng = this; PC = this;
cpu = Ng.cpu; cpu = PC.cpu;
wh = cpu.cycle_count + 100000; Ncycles = cpu.cycle_count + 100000;
xh = false;
yh = false; do_reset = false;
zh: while (cpu.cycle_count < wh) { err_on_exit = false;
Ng.pit.update_irq();
La = cpu.exec(wh - cpu.cycle_count); exec_loop: while (cpu.cycle_count < Ncycles) {
if (La == 256) { PC.pit.update_irq();
if (Ng.reset_request) { exit_status = cpu.exec(Ncycles - cpu.cycle_count);
xh = true; if (exit_status == 256) {
if (PC.reset_request) {
do_reset = true;
break; break;
} }
} else if (La == 257) { } else if (exit_status == 257) {
yh = true; err_on_exit = true;
break; break;
} else { } else {
xh = true; do_reset = true;
break; break;
} }
} }
if (!xh) { if (!do_reset) {
if (yh) { if (err_on_exit) {
setTimeout(this.timer_func.bind(this), 10); setTimeout(this.timer_func.bind(this), 10);
} else { } else {
setTimeout(this.timer_func.bind(this), 0); setTimeout(this.timer_func.bind(this), 0);
@ -70,121 +72,133 @@ PCEmulator.prototype.timer_func = function() {
}; };
PCEmulator.prototype.init_ioports = function() { PCEmulator.prototype.init_ioports = function() {
var i, Ah, Bh; var i, readw, writew;
this.ioport_readb_table = new Array(); this.ioport_readb_table = new Array();
this.ioport_writeb_table = new Array(); this.ioport_writeb_table = new Array();
this.ioport_readw_table = new Array(); this.ioport_readw_table = new Array();
this.ioport_writew_table = new Array(); this.ioport_writew_table = new Array();
this.ioport_readl_table = new Array(); this.ioport_readl_table = new Array();
this.ioport_writel_table = new Array(); this.ioport_writel_table = new Array();
Ah = this.default_ioport_readw.bind(this); readw = this.default_ioport_readw.bind(this);
Bh = this.default_ioport_writew.bind(this); writew = this.default_ioport_writew.bind(this);
for (i = 0; i < 1024; i++) { for (i = 0; i < 1024; i++) {
this.ioport_readb_table[i] = this.default_ioport_readb; this.ioport_readb_table[i] = this.default_ioport_readb;
this.ioport_writeb_table[i] = this.default_ioport_writeb; this.ioport_writeb_table[i] = this.default_ioport_writeb;
this.ioport_readw_table[i] = Ah; this.ioport_readw_table[i] = readw;
this.ioport_writew_table[i] = Bh; this.ioport_writew_table[i] = writew;
this.ioport_readl_table[i] = this.default_ioport_readl; this.ioport_readl_table[i] = this.default_ioport_readl;
this.ioport_writel_table[i] = this.default_ioport_writel; this.ioport_writel_table[i] = this.default_ioport_writel;
} }
}; };
PCEmulator.prototype.default_ioport_readb = function(Zf) { PCEmulator.prototype.default_ioport_readb = function(port_num) {
var x; var x;
x = 0xff; x = 0xff;
return x; return x;
}; };
PCEmulator.prototype.default_ioport_readw = function(Zf) { PCEmulator.prototype.default_ioport_readw = function(port_num) {
var x; var x;
x = this.ioport_readb_table[Zf](Zf); x = this.ioport_readb_table[port_num](port_num);
Zf = (Zf + 1) & (1024 - 1); port_num = (port_num + 1) & (1024 - 1);
x |= this.ioport_readb_table[Zf](Zf) << 8; x |= this.ioport_readb_table[port_num](port_num) << 8;
return x; return x;
}; };
PCEmulator.prototype.default_ioport_readl = function(Zf) { PCEmulator.prototype.default_ioport_readl = function(port_num) {
var x; var x;
x = -1; x = -1;
return x; return x;
}; };
PCEmulator.prototype.default_ioport_writeb = function(Zf, x) {}; PCEmulator.prototype.default_ioport_writeb = function(port_num, x) {};
PCEmulator.prototype.default_ioport_writew = function(Zf, x) { PCEmulator.prototype.default_ioport_writew = function(port_num, x) {
this.ioport_writeb_table[Zf](Zf, x & 0xff); this.ioport_writeb_table[port_num](port_num, x & 0xff);
Zf = (Zf + 1) & (1024 - 1); port_num = (port_num + 1) & (1024 - 1);
this.ioport_writeb_table[Zf](Zf, (x >> 8) & 0xff); this.ioport_writeb_table[port_num](port_num, (x >> 8) & 0xff);
}; };
PCEmulator.prototype.default_ioport_writel = function(Zf, x) {}; PCEmulator.prototype.default_ioport_writel = function(port_num, x) {};
PCEmulator.prototype.ld8_port = function(Zf) { PCEmulator.prototype.ld8_port = function(port_num) {
var x; var x;
x = this.ioport_readb_table[Zf & (1024 - 1)](Zf); x = this.ioport_readb_table[port_num & (1024 - 1)](port_num);
return x; return x;
}; };
PCEmulator.prototype.ld16_port = function(Zf) { PCEmulator.prototype.ld16_port = function(port_num) {
var x; var x;
x = this.ioport_readw_table[Zf & (1024 - 1)](Zf); x = this.ioport_readw_table[port_num & (1024 - 1)](port_num);
return x; return x;
}; };
PCEmulator.prototype.ld32_port = function(Zf) { PCEmulator.prototype.ld32_port = function(port_num) {
var x; var x;
x = this.ioport_readl_table[Zf & (1024 - 1)](Zf); x = this.ioport_readl_table[port_num & (1024 - 1)](port_num);
return x; return x;
}; };
PCEmulator.prototype.st8_port = function(Zf, x) { this.ioport_writeb_table[Zf & (1024 - 1)](Zf, x); }; PCEmulator.prototype.st8_port = function(port_num, x) { this.ioport_writeb_table[port_num & (1024 - 1)](port_num, x); };
PCEmulator.prototype.st16_port = function(Zf, x) { this.ioport_writew_table[Zf & (1024 - 1)](Zf, x); }; PCEmulator.prototype.st16_port = function(port_num, x) { this.ioport_writew_table[port_num & (1024 - 1)](port_num, x); };
PCEmulator.prototype.st32_port = function(Zf, x) { this.ioport_writel_table[Zf & (1024 - 1)](Zf, x); }; PCEmulator.prototype.st32_port = function(port_num, x) { this.ioport_writel_table[port_num & (1024 - 1)](port_num, x); };
PCEmulator.prototype.register_ioport_read = function(start, tg, cc, Ch) { PCEmulator.prototype.register_ioport_read = function(start, len, iotype, io_callback) {
var i; var i;
switch (cc) { switch (iotype) {
case 1: case 1:
for (i = start; i < start + tg; i++) { for (i = start; i < start + len; i++) {
this.ioport_readb_table[i] = Ch; this.ioport_readb_table[i] = io_callback;
} }
break; break;
case 2: case 2:
for (i = start; i < start + tg; i += 2) { for (i = start; i < start + len; i += 2) {
this.ioport_readw_table[i] = Ch; this.ioport_readw_table[i] = io_callback;
} }
break; break;
case 4: case 4:
for (i = start; i < start + tg; i += 4) { for (i = start; i < start + len; i += 4) {
this.ioport_readl_table[i] = Ch; this.ioport_readl_table[i] = io_callback;
} }
break; break;
} }
}; };
PCEmulator.prototype.register_ioport_write = function(start, tg, cc, Ch) { PCEmulator.prototype.register_ioport_write = function(start, len, iotype, io_callback) {
var i; var i;
switch (cc) { switch (iotype) {
case 1: case 1:
for (i = start; i < start + tg; i++) { for (i = start; i < start + len; i++) {
this.ioport_writeb_table[i] = Ch; this.ioport_writeb_table[i] = io_callback;
} }
break; break;
case 2: case 2:
for (i = start; i < start + tg; i += 2) { for (i = start; i < start + len; i += 2) {
this.ioport_writew_table[i] = Ch; this.ioport_writew_table[i] = io_callback;
} }
break; break;
case 4: case 4:
for (i = start; i < start + tg; i += 4) { for (i = start; i < start + len; i += 4) {
this.ioport_writel_table[i] = Ch; this.ioport_writel_table[i] = io_callback;
} }
break; break;
} }
}; };
PCEmulator.prototype.ioport80_write = function(mem8_loc, Ig) {}; PCEmulator.prototype.ioport80_write = function(mem8_loc, data) {};
PCEmulator.prototype.reset = function() { this.request_request = 1; }; PCEmulator.prototype.reset = function() { this.request_request = 1; };

14
PIC.js
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@ -3,9 +3,9 @@ Fabrix - An annotated version of the original JSLinux which is Copyright (c) 201
8259 PIC (Programmable Interrupt Controller) Emulation Code 8259 PIC (Programmable Interrupt Controller) Emulation Code
*/ */
function PIC(Ng, Zf) { function PIC(PC, port_num) {
Ng.register_ioport_write(Zf, 2, 1, this.ioport_write.bind(this)); PC.register_ioport_write(port_num, 2, 1, this.ioport_write.bind(this));
Ng.register_ioport_read(Zf, 2, 1, this.ioport_read.bind(this)); PC.register_ioport_read(port_num, 2, 1, this.ioport_read.bind(this));
this.reset(); this.reset();
} }
PIC.prototype.reset = function() { PIC.prototype.reset = function() {
@ -173,10 +173,10 @@ PIC.prototype.ioport_read = function(Ug) {
}; };
function PIC_Controller(Ng, Wg, Ug, Xg) { function PIC_Controller(PC, Wg, Ug, Xg) {
this.pics = new Array(); this.pics = new Array();
this.pics[0] = new PIC(Ng, Wg); this.pics[0] = new PIC(PC, Wg);
this.pics[1] = new PIC(Ng, Ug); this.pics[1] = new PIC(PC, Ug);
this.pics[0].elcr_mask = 0xf8; this.pics[0].elcr_mask = 0xf8;
this.pics[1].elcr_mask = 0xde; this.pics[1].elcr_mask = 0xde;
this.irq_requested = 0; this.irq_requested = 0;
@ -226,3 +226,5 @@ PIC_Controller.prototype.get_hard_intno = function() {
this.update_irq(); this.update_irq();
return intno; return intno;
}; };

11
PIT.js
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@ -3,7 +3,7 @@ Fabrix - An annotated version of the original JSLinux which is Copyright (c) 201
PIT Emulator PIT Emulator
*/ */
function PIT(Ng, ah, bh) { function PIT(PC, ah, bh) {
var s, i; var s, i;
this.pit_channels = new Array(); this.pit_channels = new Array();
for (i = 0; i < 3; i++) { for (i = 0; i < 3; i++) {
@ -15,10 +15,10 @@ function PIT(Ng, ah, bh) {
} }
this.speaker_data_on = 0; this.speaker_data_on = 0;
this.set_irq = ah; this.set_irq = ah;
Ng.register_ioport_write(0x40, 4, 1, this.ioport_write.bind(this)); PC.register_ioport_write(0x40, 4, 1, this.ioport_write.bind(this));
Ng.register_ioport_read(0x40, 3, 1, this.ioport_read.bind(this)); PC.register_ioport_read(0x40, 3, 1, this.ioport_read.bind(this));
Ng.register_ioport_read(0x61, 1, 1, this.speaker_ioport_read.bind(this)); PC.register_ioport_read(0x61, 1, 1, this.speaker_ioport_read.bind(this));
Ng.register_ioport_write(0x61, 1, 1, this.speaker_ioport_write.bind(this)); PC.register_ioport_write(0x61, 1, 1, this.speaker_ioport_write.bind(this));
} }
@ -214,3 +214,4 @@ PIT.prototype.update_irq = function() {
this.set_irq(1); this.set_irq(1);
this.set_irq(0); this.set_irq(0);
}; };