4753 lines
123 KiB
TypeScript
4753 lines
123 KiB
TypeScript
/*
|
||
From: https://github.com/endrift/gbajs
|
||
|
||
Copyright © 2012 – 2013, Jeffrey Pfau
|
||
All rights reserved.
|
||
|
||
Redistribution and use in source and binary forms, with or without
|
||
modification, are permitted provided that the following conditions are met:
|
||
|
||
* Redistributions of source code must retain the above copyright notice, this
|
||
list of conditions and the following disclaimer.
|
||
|
||
* Redistributions in binary form must reproduce the above copyright notice,
|
||
this list of conditions and the following disclaimer in the documentation
|
||
and/or other materials provided with the distribution.
|
||
|
||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
||
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
POSSIBILITY OF SUCH DAMAGE.
|
||
*/
|
||
|
||
import { Bus, Bus32, CPU, InstructionBased, SavesState } from "../devices";
|
||
import { EmuHalt } from "../emu";
|
||
import { hex } from "../util";
|
||
|
||
interface AddressFunction extends Function {
|
||
writesPC? : boolean;
|
||
fixedJump? : boolean;
|
||
}
|
||
|
||
interface ARMIRQInterface {
|
||
clear() : void;
|
||
swi(opcode : number) : void;
|
||
swi32(opcode : number) : void;
|
||
updateTimers() : void;
|
||
testIRQ() : void;
|
||
}
|
||
|
||
interface ARMMemoryRegion {
|
||
PAGE_MASK : number;
|
||
ICACHE_PAGE_BITS : number;
|
||
icache : ARMMemoryPage[];
|
||
}
|
||
|
||
interface ARMOperation {
|
||
next : ARMOperation;
|
||
page : ARMMemoryPage;
|
||
address : number;
|
||
opcode : number;
|
||
}
|
||
|
||
interface ARMMemoryPage {
|
||
arm : ARMOperation[];
|
||
thumb : ARMOperation[];
|
||
invalid : boolean;
|
||
}
|
||
|
||
interface ARMMMUInterface {
|
||
memory : ARMMemoryRegion[];
|
||
BASE_OFFSET : number;
|
||
OFFSET_MASK : number;
|
||
|
||
load8(a: number) : number;
|
||
loadU8(a: number) : number;
|
||
load16(a: number) : number;
|
||
loadU16(a: number) : number;
|
||
load32(a: number) : number;
|
||
store8(a: number, v: number) : void;
|
||
store16(a: number, v: number) : void;
|
||
store32(a: number, v: number) : void;
|
||
|
||
wait(a: number) : void;
|
||
wait32(a: number) : void;
|
||
waitSeq32(a: number) : void;
|
||
waitMul(a: number) : void;
|
||
waitMulti32(a: number, total: number) : void;
|
||
waitPrefetch(a: number) : void;
|
||
waitPrefetch32(a: number) : void;
|
||
|
||
addressToPage(region: number, address: number) : number;
|
||
accessPage(region: number, pageId: number) : ARMMemoryPage;
|
||
}
|
||
|
||
export interface ARMCoreState {
|
||
PC: number,
|
||
SP: number,
|
||
gprs: number[],
|
||
mode: number,
|
||
cpsrI: boolean,
|
||
cpsrF: boolean,
|
||
cpsrV: boolean,
|
||
cpsrC: boolean,
|
||
cpsrZ: boolean,
|
||
cpsrN: boolean,
|
||
bankedRegisters: number[][],
|
||
spsr: number,
|
||
bankedSPSRs: number[],
|
||
sfprs: number[],
|
||
dfprs: number[],
|
||
ifprs: number[],
|
||
cycles: number,
|
||
instructionWidth: 2 | 4
|
||
}
|
||
|
||
interface ARMCoreType {
|
||
gprs: Int32Array;
|
||
sfprs: Float32Array;
|
||
dfprs: Float64Array;
|
||
ifprs: Int32Array;
|
||
PC: number;
|
||
SP: number;
|
||
LR: number;
|
||
cycles: number;
|
||
mode: number;
|
||
shifterOperand: number;
|
||
shifterCarryOut: number|boolean;
|
||
cpsrN: number|boolean;
|
||
cpsrC: number|boolean;
|
||
cpsrZ: number|boolean;
|
||
cpsrV: number|boolean;
|
||
cpsrI: number|boolean;
|
||
cpsrF: number|boolean;
|
||
spsr: number;
|
||
mmu: ARMMMUInterface;
|
||
irq : ARMIRQInterface;
|
||
instructionWidth: 2 | 4;
|
||
|
||
hasSPSR() : boolean;
|
||
unpackCPSR(v : number) : void;
|
||
switchMode(mode : number) : void;
|
||
switchExecMode(mode : number) : void;
|
||
packCPSR() : number;
|
||
|
||
step() : void;
|
||
resetCPU(startOffset : number) : void;
|
||
freeze() : ARMCoreState;
|
||
defrost(state: ARMCoreState) : void;
|
||
|
||
raiseIRQ() : void;
|
||
raiseTrap(irqType? : number) : void;
|
||
}
|
||
|
||
export enum ARMMode {
|
||
MODE_ARM = 0,
|
||
MODE_THUMB = 1,
|
||
|
||
MODE_USER = 0x10,
|
||
MODE_FIQ = 0x11,
|
||
MODE_IRQ = 0x12,
|
||
MODE_SUPERVISOR = 0x13,
|
||
MODE_ABORT = 0x17,
|
||
MODE_UNDEFINED = 0x1B,
|
||
MODE_SYSTEM = 0x1F
|
||
}
|
||
|
||
export enum ARMRegs {
|
||
SP = 13,
|
||
LR = 14,
|
||
PC = 15,
|
||
}
|
||
|
||
export enum ARMConstants {
|
||
|
||
BANK_NONE = 0,
|
||
BANK_FIQ = 1,
|
||
BANK_IRQ = 2,
|
||
BANK_SUPERVISOR = 3,
|
||
BANK_ABORT = 4,
|
||
BANK_UNDEFINED = 5,
|
||
|
||
WORD_SIZE_ARM = 4,
|
||
WORD_SIZE_THUMB = 2,
|
||
|
||
BASE_RESET = 0x00000000,
|
||
BASE_UNDEF = 0x00000004,
|
||
BASE_SWI = 0x00000008,
|
||
BASE_PABT = 0x0000000C,
|
||
BASE_DABT = 0x00000010,
|
||
BASE_IRQ = 0x00000018,
|
||
BASE_FIQ = 0x0000001C,
|
||
}
|
||
|
||
const UNALLOC_MASK = 0x0FFFFF00;
|
||
const USER_MASK = 0xF0000000;
|
||
const PRIV_MASK = 0x000000DF; // This is out of spec? (SEH)
|
||
const STATE_MASK = 0x00000020;
|
||
|
||
|
||
///////////////////////////////////////////////////////////////////////////
|
||
|
||
function ARMCoreArm(cpu: ARMCoreType) {
|
||
this.cpu = cpu;
|
||
|
||
this.addressingMode23Immediate = [
|
||
// 000x0
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] -= offset;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
// 000xW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// 00Ux0
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] += offset;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
// 00UxW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// 0P0x0
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
return /* addr = */ gprs[rn] - offset;
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// 0P0xW
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn] - offset;
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null,
|
||
|
||
// 0PUx0
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
return /* addr = */ gprs[rn] + offset;
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// 0PUxW
|
||
function(rn, offset, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn] + offset;
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null,
|
||
];
|
||
|
||
this.addressingMode23Register = [
|
||
// I00x0
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] -= gprs[rm];
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
// I00xW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// I0Ux0
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] += gprs[rm];
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
// I0UxW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// IP0x0
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
return gprs[rn] - gprs[rm];
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// IP0xW
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn] - gprs[rm];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null,
|
||
|
||
// IPUx0
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn] + gprs[rm];
|
||
return addr;
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// IPUxW
|
||
function(rn, rm, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn] + gprs[rm];
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null
|
||
];
|
||
|
||
this.addressingMode2RegisterShifted = [
|
||
// I00x0
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
shiftOp();
|
||
gprs[rn] -= cpu.shifterOperand;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
// I00xW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// I0Ux0
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
var addr = gprs[rn];
|
||
if (!condOp || condOp()) {
|
||
shiftOp();
|
||
gprs[rn] += cpu.shifterOperand;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
// I0UxW
|
||
null,
|
||
|
||
null,
|
||
null,
|
||
|
||
// IP0x0
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
shiftOp();
|
||
return gprs[rn] - cpu.shifterOperand;
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// IP0xW
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
shiftOp();
|
||
var addr = gprs[rn] - cpu.shifterOperand;
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null,
|
||
|
||
// IPUx0
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
shiftOp();
|
||
return gprs[rn] + cpu.shifterOperand;
|
||
};
|
||
address.writesPC = false;
|
||
return address;
|
||
},
|
||
|
||
// IPUxW
|
||
function(rn, shiftOp, condOp) {
|
||
var gprs = cpu.gprs;
|
||
var address : AddressFunction = function() {
|
||
shiftOp();
|
||
var addr = gprs[rn] + cpu.shifterOperand;
|
||
if (!condOp || condOp()) {
|
||
gprs[rn] = addr;
|
||
}
|
||
return addr;
|
||
};
|
||
address.writesPC = rn == ARMRegs.PC;
|
||
return address;
|
||
},
|
||
|
||
null,
|
||
null,
|
||
];
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1ASR = function(rs, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
++cpu.cycles;
|
||
var shift = gprs[rs];
|
||
if (rs == ARMRegs.PC) {
|
||
shift += 4;
|
||
}
|
||
shift &= 0xFF;
|
||
var shiftVal = gprs[rm];
|
||
if (rm == ARMRegs.PC) {
|
||
shiftVal += 4;
|
||
}
|
||
if (shift == 0) {
|
||
cpu.shifterOperand = shiftVal;
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
} else if (shift < 32) {
|
||
cpu.shifterOperand = shiftVal >> shift;
|
||
cpu.shifterCarryOut = shiftVal & (1 << (shift - 1));
|
||
} else if (gprs[rm] >> 31) {
|
||
cpu.shifterOperand = 0xFFFFFFFF;
|
||
cpu.shifterCarryOut = 0x80000000;
|
||
} else {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = 0;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1Immediate = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
return function() {
|
||
cpu.shifterOperand = immediate;
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1ImmediateRotate = function(immediate, rotate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
return function() {
|
||
cpu.shifterOperand = (immediate >>> rotate) | (immediate << (32 - rotate));
|
||
cpu.shifterCarryOut = cpu.shifterOperand >> 31;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1LSL = function(rs, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
++cpu.cycles;
|
||
var shift = gprs[rs];
|
||
if (rs == ARMRegs.PC) {
|
||
shift += 4;
|
||
}
|
||
shift &= 0xFF;
|
||
var shiftVal = gprs[rm];
|
||
if (rm == ARMRegs.PC) {
|
||
shiftVal += 4;
|
||
}
|
||
if (shift == 0) {
|
||
cpu.shifterOperand = shiftVal;
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
} else if (shift < 32) {
|
||
cpu.shifterOperand = shiftVal << shift;
|
||
cpu.shifterCarryOut = shiftVal & (1 << (32 - shift));
|
||
} else if (shift == 32) {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = shiftVal & 1;
|
||
} else {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = 0;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1LSR = function(rs, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
++cpu.cycles;
|
||
var shift = gprs[rs];
|
||
if (rs == ARMRegs.PC) {
|
||
shift += 4;
|
||
}
|
||
shift &= 0xFF;
|
||
var shiftVal = gprs[rm];
|
||
if (rm == ARMRegs.PC) {
|
||
shiftVal += 4;
|
||
}
|
||
if (shift == 0) {
|
||
cpu.shifterOperand = shiftVal;
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
} else if (shift < 32) {
|
||
cpu.shifterOperand = shiftVal >>> shift;
|
||
cpu.shifterCarryOut = shiftVal & (1 << (shift - 1));
|
||
} else if (shift == 32) {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = shiftVal >> 31;
|
||
} else {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = 0;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode1ROR = function(rs, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
++cpu.cycles;
|
||
var shift = gprs[rs];
|
||
if (rs == ARMRegs.PC) {
|
||
shift += 4;
|
||
}
|
||
shift &= 0xFF;
|
||
var shiftVal = gprs[rm];
|
||
if (rm == ARMRegs.PC) {
|
||
shiftVal += 4;
|
||
}
|
||
var rotate = shift & 0x1F;
|
||
if (shift == 0) {
|
||
cpu.shifterOperand = shiftVal;
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
} else if (rotate) {
|
||
cpu.shifterOperand = (gprs[rm] >>> rotate) | (gprs[rm] << (32 - rotate));
|
||
cpu.shifterCarryOut = shiftVal & (1 << (rotate - 1));
|
||
} else {
|
||
cpu.shifterOperand = shiftVal;
|
||
cpu.shifterCarryOut = shiftVal >> 31;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode23Immediate = function(instruction, immediate, condOp) {
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
return this.addressingMode23Immediate[(instruction & 0x01A00000) >> 21](rn, immediate, condOp);
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode23Register = function(instruction, rm, condOp) {
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
return this.addressingMode23Register[(instruction & 0x01A00000) >> 21](rn, rm, condOp);
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode2RegisterShifted = function(instruction, shiftOp, condOp) {
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
return this.addressingMode2RegisterShifted[(instruction & 0x01A00000) >> 21](rn, shiftOp, condOp);
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode4 = function(immediate, rn) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var addr = gprs[rn] + immediate;
|
||
return addr;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAddressingMode4Writeback = function(immediate, offset, rn, overlap) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function(writeInitial) {
|
||
var addr = gprs[rn] + immediate;
|
||
if (writeInitial && overlap) {
|
||
cpu.mmu.store32(gprs[rn] + immediate - 4, gprs[rn]);
|
||
}
|
||
gprs[rn] += offset;
|
||
return addr;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructNOP = function() {
|
||
this.writesPC = false;
|
||
return function() { };
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructADC = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var shifterOperand = (cpu.shifterOperand >>> 0) + (cpu.cpsrC ? 1 : 0);
|
||
gprs[rd] = (gprs[rn] >>> 0) + shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructADCS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var shifterOperand = (cpu.shifterOperand >>> 0) + (cpu.cpsrC ? 1 : 0);
|
||
var d = (gprs[rn] >>> 0) + shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = (gprs[rn] >> 31) == (shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (d >> 31) &&
|
||
(shifterOperand >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructADD = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = (gprs[rn] >>> 0) + (cpu.shifterOperand >>> 0);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructADDS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var d = (gprs[rn] >>> 0) + (cpu.shifterOperand >>> 0);
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = (gprs[rn] >> 31) == (cpu.shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (d >> 31) &&
|
||
(cpu.shifterOperand >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructAND = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] & cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructANDS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] & cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructB = function(immediate, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
gprs[ARMRegs.PC] += immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructBIC = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] & ~cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructBICS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] & ~cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructBL = function(immediate, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
gprs[ARMRegs.LR] = gprs[ARMRegs.PC] - 4;
|
||
gprs[ARMRegs.PC] += immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructBX = function(rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
cpu.switchExecMode(gprs[rm] & 0x00000001);
|
||
gprs[ARMRegs.PC] = gprs[rm] & 0xFFFFFFFE;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructCMN = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var aluOut = (gprs[rn] >>> 0) + (cpu.shifterOperand >>> 0);
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = aluOut > 0xFFFFFFFF;
|
||
cpu.cpsrV = (gprs[rn] >> 31) == (cpu.shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (aluOut >> 31) &&
|
||
(cpu.shifterOperand >> 31) != (aluOut >> 31);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructCMP = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var aluOut = gprs[rn] - cpu.shifterOperand;
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= (cpu.shifterOperand >>> 0);
|
||
cpu.cpsrV = (gprs[rn] >> 31) != (cpu.shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (aluOut >> 31);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructEOR = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] ^ cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructEORS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] ^ cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDM = function(rs, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
var mmu = cpu.mmu;
|
||
return function() {
|
||
mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address(false);
|
||
var total = 0;
|
||
var m, i;
|
||
for (m = rs, i = 0; m; m >>= 1, ++i) {
|
||
if (m & 1) {
|
||
gprs[i] = mmu.load32(addr & 0xFFFFFFFC);
|
||
addr += 4;
|
||
++total;
|
||
}
|
||
}
|
||
mmu.waitMulti32(addr, total);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDMS = function(rs, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
var mmu = cpu.mmu;
|
||
return function() {
|
||
mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address(false);
|
||
var total = 0;
|
||
var mode = cpu.mode;
|
||
cpu.switchMode(ARMMode.MODE_SYSTEM);
|
||
var m, i;
|
||
for (m = rs, i = 0; m; m >>= 1, ++i) {
|
||
if (m & 1) {
|
||
gprs[i] = mmu.load32(addr & 0xFFFFFFFC);
|
||
addr += 4;
|
||
++total;
|
||
}
|
||
}
|
||
cpu.switchMode(mode);
|
||
mmu.waitMulti32(addr, total);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDR = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address();
|
||
gprs[rd] = cpu.mmu.load32(addr);
|
||
cpu.mmu.wait32(addr);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDRB = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address();
|
||
gprs[rd] = cpu.mmu.loadU8(addr);
|
||
cpu.mmu.wait(addr);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDRH = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address();
|
||
gprs[rd] = cpu.mmu.loadU16(addr);
|
||
cpu.mmu.wait(addr);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDRSB = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address();
|
||
gprs[rd] = cpu.mmu.load8(addr);
|
||
cpu.mmu.wait(addr);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructLDRSH = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var addr = address();
|
||
gprs[rd] = cpu.mmu.load16(addr);
|
||
cpu.mmu.wait(addr);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMLA = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(rs);
|
||
if ((gprs[rm] & 0xFFFF0000) && (gprs[rs] & 0xFFFF0000)) {
|
||
// Our data type is a double--we'll lose bits if we do it all at once!
|
||
var hi = ((gprs[rm] & 0xFFFF0000) * gprs[rs]) & 0xFFFFFFFF;
|
||
var lo = ((gprs[rm] & 0x0000FFFF) * gprs[rs]) & 0xFFFFFFFF;
|
||
gprs[rd] = (hi + lo + gprs[rn]) & 0xFFFFFFFF;
|
||
} else {
|
||
gprs[rd] = gprs[rm] * gprs[rs] + gprs[rn];
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMLAS = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(rs);
|
||
if ((gprs[rm] & 0xFFFF0000) && (gprs[rs] & 0xFFFF0000)) {
|
||
// Our data type is a double--we'll lose bits if we do it all at once!
|
||
var hi = ((gprs[rm] & 0xFFFF0000) * gprs[rs]) & 0xFFFFFFFF;
|
||
var lo = ((gprs[rm] & 0x0000FFFF) * gprs[rs]) & 0xFFFFFFFF;
|
||
gprs[rd] = (hi + lo + gprs[rn]) & 0xFFFFFFFF;
|
||
} else {
|
||
gprs[rd] = gprs[rm] * gprs[rs] + gprs[rn];
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMOV = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMOVS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMRS = function(rd, r, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
if (r) {
|
||
gprs[rd] = cpu.spsr;
|
||
} else {
|
||
gprs[rd] = cpu.packCPSR();
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMSR = function(rm, r, instruction, immediate, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
var c = instruction & 0x00010000;
|
||
//var x = instruction & 0x00020000;
|
||
//var s = instruction & 0x00040000;
|
||
var f = instruction & 0x00080000;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var operand;
|
||
if (instruction & 0x02000000) {
|
||
operand = immediate;
|
||
} else {
|
||
operand = gprs[rm];
|
||
}
|
||
var mask = (c ? 0x000000FF : 0x00000000) |
|
||
//(x ? 0x0000FF00 : 0x00000000) | // Irrelevant on ARMv4T
|
||
//(s ? 0x00FF0000 : 0x00000000) | // Irrelevant on ARMv4T
|
||
(f ? 0xFF000000 : 0x00000000);
|
||
if (r) {
|
||
mask &= USER_MASK | PRIV_MASK | STATE_MASK;
|
||
//console.log(hex(r), hex(mask & 0x7fffffff), hex(cpu.spsr), hex(operand));
|
||
cpu.spsr = (cpu.spsr & ~mask) | (operand & mask);
|
||
} else {
|
||
if (mask & USER_MASK) {
|
||
cpu.cpsrN = operand >> 31;
|
||
cpu.cpsrZ = operand & 0x40000000;
|
||
cpu.cpsrC = operand & 0x20000000;
|
||
cpu.cpsrV = operand & 0x10000000;
|
||
}
|
||
if (cpu.mode != ARMMode.MODE_USER && (mask & PRIV_MASK)) {
|
||
cpu.switchMode((operand & 0x0000000F) | 0x00000010);
|
||
cpu.cpsrI = operand & 0x00000080;
|
||
cpu.cpsrF = operand & 0x00000040;
|
||
}
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMUL = function(rd, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
if ((gprs[rm] & 0xFFFF0000) && (gprs[rs] & 0xFFFF0000)) {
|
||
// Our data type is a double--we'll lose bits if we do it all at once!
|
||
var hi = ((gprs[rm] & 0xFFFF0000) * gprs[rs]) | 0;
|
||
var lo = ((gprs[rm] & 0x0000FFFF) * gprs[rs]) | 0;
|
||
gprs[rd] = hi + lo;
|
||
} else {
|
||
gprs[rd] = gprs[rm] * gprs[rs];
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMULS = function(rd, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
if ((gprs[rm] & 0xFFFF0000) && (gprs[rs] & 0xFFFF0000)) {
|
||
// Our data type is a double--we'll lose bits if we do it all at once!
|
||
var hi = ((gprs[rm] & 0xFFFF0000) * gprs[rs]) | 0;
|
||
var lo = ((gprs[rm] & 0x0000FFFF) * gprs[rs]) | 0;
|
||
gprs[rd] = hi + lo;
|
||
} else {
|
||
gprs[rd] = gprs[rm] * gprs[rs];
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMVN = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = ~cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructMVNS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = ~cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructORR = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] | cpu.shifterOperand;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructORRS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] | cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructRSB = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = cpu.shifterOperand - gprs[rn];
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructRSBS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var d = cpu.shifterOperand - gprs[rn];
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (cpu.shifterOperand >>> 0) >= (gprs[rn] >>> 0);
|
||
cpu.cpsrV = (cpu.shifterOperand >> 31) != (gprs[rn] >> 31) &&
|
||
(cpu.shifterOperand >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructRSC = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var n = (gprs[rn] >>> 0) + (cpu.cpsrC ? 0 : 1);
|
||
gprs[rd] = (cpu.shifterOperand >>> 0) - n;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructRSCS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var n = (gprs[rn] >>> 0) + (cpu.cpsrC ? 0 : 1);
|
||
var d = (cpu.shifterOperand >>> 0) - n;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (cpu.shifterOperand >>> 0) >= (d >>> 0);
|
||
cpu.cpsrV = (cpu.shifterOperand >> 31) != (n >> 31) &&
|
||
(cpu.shifterOperand >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSBC = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var shifterOperand = (cpu.shifterOperand >>> 0) + (cpu.cpsrC ? 0 : 1);
|
||
gprs[rd] = (gprs[rn] >>> 0) - shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSBCS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var shifterOperand = (cpu.shifterOperand >>> 0) + (cpu.cpsrC ? 0 : 1);
|
||
var d = (gprs[rn] >>> 0) - shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= (d >>> 0);
|
||
cpu.cpsrV = (gprs[rn] >> 31) != (shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSMLAL = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.cycles += 2;
|
||
cpu.mmu.waitMul(rs);
|
||
var hi = (gprs[rm] & 0xFFFF0000) * gprs[rs];
|
||
var lo = (gprs[rm] & 0x0000FFFF) * gprs[rs];
|
||
var carry = (gprs[rn] >>> 0) + hi + lo;
|
||
gprs[rn] = carry;
|
||
gprs[rd] += Math.floor(carry * SHIFT_32);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSMLALS = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.cycles += 2;
|
||
cpu.mmu.waitMul(rs);
|
||
var hi = (gprs[rm] & 0xFFFF0000) * gprs[rs];
|
||
var lo = (gprs[rm] & 0x0000FFFF) * gprs[rs];
|
||
var carry = (gprs[rn] >>> 0) + hi + lo;
|
||
gprs[rn] = carry;
|
||
gprs[rd] += Math.floor(carry * SHIFT_32);
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !((gprs[rd] & 0xFFFFFFFF) || (gprs[rn] & 0xFFFFFFFF));
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSMULL = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >> 0) * (gprs[rs] >> 0);
|
||
var lo = ((gprs[rm] & 0x0000FFFF) >> 0) * (gprs[rs] >> 0);
|
||
gprs[rn] = ((hi & 0xFFFFFFFF) + (lo & 0xFFFFFFFF)) & 0xFFFFFFFF;
|
||
gprs[rd] = Math.floor(hi * SHIFT_32 + lo * SHIFT_32);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSMULLS = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >> 0) * (gprs[rs] >> 0);
|
||
var lo = ((gprs[rm] & 0x0000FFFF) >> 0) * (gprs[rs] >> 0);
|
||
gprs[rn] = ((hi & 0xFFFFFFFF) + (lo & 0xFFFFFFFF)) & 0xFFFFFFFF;
|
||
gprs[rd] = Math.floor(hi * SHIFT_32 + lo * SHIFT_32);
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !((gprs[rd] & 0xFFFFFFFF) || (gprs[rn] & 0xFFFFFFFF));
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSTM = function(rs, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
var mmu = cpu.mmu;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
mmu.wait32(gprs[ARMRegs.PC]);
|
||
var addr = address(true);
|
||
var total = 0;
|
||
var m, i;
|
||
for (m = rs, i = 0; m; m >>= 1, ++i) {
|
||
if (m & 1) {
|
||
mmu.store32(addr, gprs[i]);
|
||
addr += 4;
|
||
++total;
|
||
}
|
||
}
|
||
mmu.waitMulti32(addr, total);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSTMS = function(rs, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
var mmu = cpu.mmu;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
mmu.wait32(gprs[ARMRegs.PC]);
|
||
var mode = cpu.mode;
|
||
var addr = address(true);
|
||
var total = 0;
|
||
var m, i;
|
||
cpu.switchMode(ARMMode.MODE_SYSTEM);
|
||
for (m = rs, i = 0; m; m >>= 1, ++i) {
|
||
if (m & 1) {
|
||
mmu.store32(addr, gprs[i]);
|
||
addr += 4;
|
||
++total;
|
||
}
|
||
}
|
||
cpu.switchMode(mode);
|
||
mmu.waitMulti32(addr, total);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSTR = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
var addr = address();
|
||
cpu.mmu.store32(addr, gprs[rd]);
|
||
cpu.mmu.wait32(addr);
|
||
cpu.mmu.wait32(gprs[ARMRegs.PC]);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSTRB = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
var addr = address();
|
||
cpu.mmu.store8(addr, gprs[rd]);
|
||
cpu.mmu.wait(addr);
|
||
cpu.mmu.wait32(gprs[ARMRegs.PC]);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSTRH = function(rd, address, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
var addr = address();
|
||
cpu.mmu.store16(addr, gprs[rd]);
|
||
cpu.mmu.wait(addr);
|
||
cpu.mmu.wait32(gprs[ARMRegs.PC]);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSUB = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
gprs[rd] = gprs[rn] - cpu.shifterOperand;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSUBS = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var d = gprs[rn] - cpu.shifterOperand;
|
||
if (rd == ARMRegs.PC && cpu.hasSPSR()) {
|
||
cpu.unpackCPSR(cpu.spsr);
|
||
} else {
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= (cpu.shifterOperand >>> 0);
|
||
cpu.cpsrV = (gprs[rn] >> 31) != (cpu.shifterOperand >> 31) &&
|
||
(gprs[rn] >> 31) != (d >> 31);
|
||
}
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSWI = function(immediate, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
if (condOp && !condOp()) {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
return;
|
||
}
|
||
cpu.irq.swi32(immediate);
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSWP = function(rd, rn, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.mmu.wait32(gprs[rn]);
|
||
cpu.mmu.wait32(gprs[rn]);
|
||
var d = cpu.mmu.load32(gprs[rn]);
|
||
cpu.mmu.store32(gprs[rn], gprs[rm]);
|
||
gprs[rd] = d;
|
||
++cpu.cycles;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructSWPB = function(rd, rn, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.mmu.wait(gprs[rn]);
|
||
cpu.mmu.wait(gprs[rn]);
|
||
var d = cpu.mmu.loadU8(gprs[rn]);
|
||
cpu.mmu.store8(gprs[rn], gprs[rm]);
|
||
gprs[rd] = d;
|
||
++cpu.cycles;
|
||
}
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructTEQ = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var aluOut = gprs[rn] ^ cpu.shifterOperand;
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructTST = function(rd, rn, shiftOp, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
shiftOp();
|
||
var aluOut = gprs[rn] & cpu.shifterOperand;
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = cpu.shifterCarryOut;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructUMLAL = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.cycles += 2;
|
||
cpu.mmu.waitMul(rs);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >>> 0) * (gprs[rs] >>> 0);
|
||
var lo = (gprs[rm] & 0x0000FFFF) * (gprs[rs] >>> 0);
|
||
var carry = (gprs[rn] >>> 0) + hi + lo;
|
||
gprs[rn] = carry;
|
||
gprs[rd] += carry * SHIFT_32;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructUMLALS = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
cpu.cycles += 2;
|
||
cpu.mmu.waitMul(rs);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >>> 0) * (gprs[rs] >>> 0);
|
||
var lo = (gprs[rm] & 0x0000FFFF) * (gprs[rs] >>> 0);
|
||
var carry = (gprs[rn] >>> 0) + hi + lo;
|
||
gprs[rn] = carry;
|
||
gprs[rd] += carry * SHIFT_32;
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !((gprs[rd] & 0xFFFFFFFF) || (gprs[rn] & 0xFFFFFFFF));
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructUMULL = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >>> 0) * (gprs[rs] >>> 0);
|
||
var lo = ((gprs[rm] & 0x0000FFFF) >>> 0) * (gprs[rs] >>> 0);
|
||
gprs[rn] = ((hi & 0xFFFFFFFF) + (lo & 0xFFFFFFFF)) & 0xFFFFFFFF;
|
||
gprs[rd] = (hi * SHIFT_32 + lo * SHIFT_32) >>> 0;
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructUMULLS = function(rd, rn, rs, rm, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var SHIFT_32 = 1/0x100000000;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
++cpu.cycles;
|
||
cpu.mmu.waitMul(gprs[rs]);
|
||
var hi = ((gprs[rm] & 0xFFFF0000) >>> 0) * (gprs[rs] >>> 0);
|
||
var lo = ((gprs[rm] & 0x0000FFFF) >>> 0) * (gprs[rs] >>> 0);
|
||
gprs[rn] = ((hi & 0xFFFFFFFF) + (lo & 0xFFFFFFFF)) & 0xFFFFFFFF;
|
||
gprs[rd] = (hi * SHIFT_32 + lo * SHIFT_32) >>> 0;
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !((gprs[rd] & 0xFFFFFFFF) || (gprs[rn] & 0xFFFFFFFF));
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructVFP3Register = function(condOp, opcode, nOperandReg, destReg, sz, opcode2, mOperandReg) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var fpregs = sz ? cpu.dfprs : cpu.sfprs;
|
||
//console.log("VFP3Register: " + hex(opcode) + " " + hex(nOperandReg) + " " + hex(destReg) + " " + hex(number) + " " + hex(opcode2) + " " + hex(mOperandReg));
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
switch (opcode) {
|
||
case 2: // VMUL
|
||
switch (opcode2) {
|
||
case 0:
|
||
fpregs[destReg] = fpregs[nOperandReg] * fpregs[mOperandReg];
|
||
return;
|
||
}
|
||
break;
|
||
case 3: // VADD/VSUB
|
||
switch (opcode2) {
|
||
case 0:
|
||
fpregs[destReg] = fpregs[nOperandReg] + fpregs[mOperandReg];
|
||
return;
|
||
case 2:
|
||
fpregs[destReg] = fpregs[nOperandReg] - fpregs[mOperandReg];
|
||
return;
|
||
}
|
||
break;
|
||
case 8: // VDIV
|
||
switch (opcode2) {
|
||
case 0:
|
||
fpregs[destReg] = fpregs[nOperandReg] / fpregs[mOperandReg];
|
||
return;
|
||
}
|
||
break;
|
||
}
|
||
console.log("Unsupported instruction: " + hex(opcode) + " " + hex(opcode2));
|
||
};
|
||
};
|
||
|
||
/*
|
||
if ConditionPassed() then
|
||
EncodingSpecificOperations(); CheckVFPEnabled(TRUE);
|
||
if to_integer then
|
||
if dp_operation then
|
||
S[d] = FPToFixed(D[m], 32, 0, unsigned, round_zero, TRUE);
|
||
else
|
||
S[d] = FPToFixed(S[m], 32, 0, unsigned, round_zero, TRUE);
|
||
else
|
||
if dp_operation then
|
||
D[d] = FixedToFP(S[m], 64, 0, unsigned, round_nearest, TRUE);
|
||
else
|
||
S[d] = FixedToFP(S[m], 32, 0, unsigned, round_nearest, TRUE);
|
||
*/
|
||
ARMCoreArm.prototype.constructVCVT = function(condOp, d, m, to_integer, dp_operation, unsigned, round_zero, round_nearest) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var sregs = cpu.sfprs;
|
||
var dregs = cpu.dfprs;
|
||
var iregs = cpu.ifprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var src : number;
|
||
var dest : number;
|
||
// get source
|
||
if (to_integer && dp_operation) {
|
||
src = dregs[m];
|
||
} else if (to_integer) {
|
||
src = sregs[m];
|
||
} else {
|
||
src = iregs[m];
|
||
}
|
||
// convert
|
||
if (to_integer) {
|
||
dest = round_zero ? Math.floor(src) : Math.round(src);
|
||
} else {
|
||
dest = src;
|
||
}
|
||
// store result
|
||
if (to_integer) {
|
||
iregs[d] = dest;
|
||
} else if (dp_operation) {
|
||
dregs[d] = dest;
|
||
} else {
|
||
sregs[d] = dest;
|
||
}
|
||
};
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVCVTF = function(condOp, d, m, double_to_single) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var sregs = cpu.sfprs;
|
||
var dregs = cpu.dfprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
var n = double_to_single ? dregs[m] : sregs[m];
|
||
// store result
|
||
if (double_to_single) {
|
||
sregs[d] = n;
|
||
} else {
|
||
dregs[d] = n;
|
||
}
|
||
};
|
||
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVLDR = function(condOp, destReg, address, single_reg) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var iregs = cpu.ifprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let addr = address();
|
||
if (single_reg) {
|
||
iregs[destReg] = cpu.mmu.load32(addr);
|
||
} else {
|
||
iregs[destReg] = cpu.mmu.load32(addr);
|
||
iregs[destReg+1] = cpu.mmu.load32(addr+4);
|
||
}
|
||
cpu.mmu.wait32(addr);
|
||
cpu.mmu.wait32(cpu.gprs[ARMRegs.PC]);
|
||
};
|
||
};
|
||
|
||
ARMCoreArm.prototype.constructVSTR = function(condOp, srcReg, address, single_reg) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var iregs = cpu.ifprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let addr = address();
|
||
if (single_reg) {
|
||
cpu.mmu.store32(addr, iregs[srcReg]);
|
||
} else {
|
||
cpu.mmu.store32(addr, iregs[srcReg]);
|
||
cpu.mmu.store32(addr+4, iregs[srcReg+1]);
|
||
}
|
||
cpu.mmu.wait32(addr);
|
||
cpu.mmu.wait32(cpu.gprs[ARMRegs.PC]);
|
||
};
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVPUSH = function(condOp, d, regs, single_regs) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var iregs = cpu.ifprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let addr = cpu.gprs[ARMRegs.SP] - regs * 4;
|
||
cpu.gprs[ARMRegs.SP] = addr;
|
||
for (let i = 0; i < regs; ++i) {
|
||
cpu.mmu.store32(addr, iregs[d+i]);
|
||
addr += 4;
|
||
}
|
||
};
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVPOP = function(condOp, d, regs, single_regs) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var iregs = cpu.ifprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let addr = cpu.gprs[ARMRegs.SP];
|
||
cpu.gprs[ARMRegs.SP] += regs * 4;
|
||
for (let i = 0; i < regs; ++i) {
|
||
iregs[d+i] = cpu.mmu.load32(addr);
|
||
addr += 4;
|
||
}
|
||
};
|
||
}
|
||
|
||
function FPCompare(op1: number, op2: number) {
|
||
/* assert N IN {32,64};
|
||
fpscr_val = if fpscr_controlled then FPSCR else StandardFPSCRValue();
|
||
(type1,sign1,value1) = FPUnpack(op1, fpscr_val);
|
||
(type2,sign2,value2) = FPUnpack(op2, fpscr_val); */
|
||
if (isNaN(op1) || isNaN(op2)) {
|
||
return 0b0011;
|
||
}
|
||
if (op1 == op2) return 0b0110;
|
||
if (op1 < op2) return 0b1000;
|
||
else return 0b0010;
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVCMP = function(condOp, d, Vd, sz, E, m, Vm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var sregs = cpu.sfprs;
|
||
var dregs = cpu.dfprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let op1, op2;
|
||
if (sz) {
|
||
op1 = dregs[d];
|
||
op2 = dregs[m];
|
||
} else {
|
||
op1 = sregs[d];
|
||
op2 = sregs[m];
|
||
}
|
||
let result = FPCompare(op1, op2);
|
||
cpu.cpsrN = (result & 8) != 0;
|
||
cpu.cpsrZ = (result & 4) != 0;
|
||
cpu.cpsrC = (result & 2) != 0;
|
||
cpu.cpsrV = (result & 1) != 0;
|
||
}
|
||
}
|
||
|
||
ARMCoreArm.prototype.constructVCMP0 = function(condOp, d, Vd, sz, E) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var sregs = cpu.sfprs;
|
||
var dregs = cpu.dfprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
let op1, op2=0;
|
||
if (sz) {
|
||
op1 = dregs[d];
|
||
} else {
|
||
op1 = sregs[d];
|
||
}
|
||
let result = FPCompare(op1, op2);
|
||
cpu.cpsrN = (result & 8) != 0;
|
||
cpu.cpsrZ = (result & 4) != 0;
|
||
cpu.cpsrC = (result & 2) != 0;
|
||
cpu.cpsrV = (result & 1) != 0;
|
||
}
|
||
}
|
||
ARMCoreArm.prototype.constructVMOV = function(condOp, to_arm_reg, n, t) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch32(cpu.gprs[ARMRegs.PC]);
|
||
if (condOp && !condOp()) {
|
||
return;
|
||
}
|
||
if (to_arm_reg) {
|
||
cpu.gprs[t] = cpu.ifprs[n];
|
||
} else {
|
||
cpu.ifprs[n] = cpu.gprs[t];
|
||
}
|
||
}
|
||
}
|
||
|
||
///////////////////////////////////////////////////////////////////////////
|
||
|
||
function ARMCoreThumb(cpu) {
|
||
this.cpu = cpu;
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADC = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var m = (gprs[rm] >>> 0) + (cpu.cpsrC ? 1 : 0);
|
||
var oldD = gprs[rd];
|
||
var d = (oldD >>> 0) + m;
|
||
var oldDn = oldD >> 31;
|
||
var dn = d >> 31;
|
||
var mn = m >> 31;
|
||
cpu.cpsrN = dn;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = oldDn == mn && oldDn != dn && mn != dn;
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = (gprs[rn] >>> 0) + immediate;
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = !(gprs[rn] >> 31) && ((gprs[rn] >> 31 ^ d) >> 31) && (d >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD2 = function(rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = (gprs[rn] >>> 0) + immediate;
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = !(gprs[rn] >> 31) && ((gprs[rn] ^ d) >> 31) && ((immediate ^ d) >> 31);
|
||
gprs[rn] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD3 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = (gprs[rn] >>> 0) + (gprs[rm] >>> 0);
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = d > 0xFFFFFFFF;
|
||
cpu.cpsrV = !((gprs[rn] ^ gprs[rm]) >> 31) && ((gprs[rn] ^ d) >> 31) && ((gprs[rm] ^ d) >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD4 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] += gprs[rm];
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD5 = function(rd, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = (gprs[ARMRegs.PC] & 0xFFFFFFFC) + immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD6 = function(rd, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[ARMRegs.SP] + immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructADD7 = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[ARMRegs.SP] += immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructAND = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[rd] & gprs[rm];
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructASR1 = function(rd, rm, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
if (immediate == 0) {
|
||
cpu.cpsrC = gprs[rm] >> 31;
|
||
if (cpu.cpsrC) {
|
||
gprs[rd] = 0xFFFFFFFF;
|
||
} else {
|
||
gprs[rd] = 0;
|
||
}
|
||
} else {
|
||
cpu.cpsrC = gprs[rm] & (1 << (immediate - 1));
|
||
gprs[rd] = gprs[rm] >> immediate;
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructASR2 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var rs = gprs[rm] & 0xFF;
|
||
if (rs) {
|
||
if (rs < 32) {
|
||
cpu.cpsrC = gprs[rd] & (1 << (rs - 1));
|
||
gprs[rd] >>= rs;
|
||
} else {
|
||
cpu.cpsrC = gprs[rd] >> 31;
|
||
if (cpu.cpsrC) {
|
||
gprs[rd] = 0xFFFFFFFF;
|
||
} else {
|
||
gprs[rd] = 0;
|
||
}
|
||
}
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructB1 = function(immediate, condOp) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
if (condOp()) {
|
||
gprs[ARMRegs.PC] += immediate;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructB2 = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[ARMRegs.PC] += immediate;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructBIC = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[rd] & ~gprs[rm];
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructBL1 = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[ARMRegs.LR] = gprs[ARMRegs.PC] + immediate;
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructBL2 = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var pc = gprs[ARMRegs.PC];
|
||
gprs[ARMRegs.PC] = gprs[ARMRegs.LR] + (immediate << 1);
|
||
gprs[ARMRegs.LR] = pc - 1;
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructBX = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
cpu.switchExecMode(gprs[rm] & 0x00000001);
|
||
var misalign = 0;
|
||
if (rm == 15) {
|
||
misalign = gprs[rm] & 0x00000002;
|
||
}
|
||
gprs[ARMRegs.PC] = gprs[rm] & 0xFFFFFFFE - misalign;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructCMN = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var aluOut = (gprs[rd] >>> 0) + (gprs[rm] >>> 0);
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = aluOut > 0xFFFFFFFF;
|
||
cpu.cpsrV = (gprs[rd] >> 31) == (gprs[rm] >> 31) &&
|
||
(gprs[rd] >> 31) != (aluOut >> 31) &&
|
||
(gprs[rm] >> 31) != (aluOut >> 31);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructCMP1 = function(rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var aluOut = gprs[rn] - immediate;
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= immediate;
|
||
cpu.cpsrV = (gprs[rn] >> 31) && ((gprs[rn] ^ aluOut) >> 31);
|
||
};
|
||
}
|
||
|
||
ARMCoreThumb.prototype.constructCMP2 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = gprs[rd];
|
||
var m = gprs[rm];
|
||
var aluOut = d - m;
|
||
var an = aluOut >> 31;
|
||
var dn = d >> 31;
|
||
cpu.cpsrN = an;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = (d >>> 0) >= (m >>> 0);
|
||
cpu.cpsrV = dn != (m >> 31) && dn != an;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructCMP3 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var aluOut = gprs[rd] - gprs[rm];
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rd] >>> 0) >= (gprs[rm] >>> 0);
|
||
cpu.cpsrV = ((gprs[rd] ^ gprs[rm]) >> 31) && ((gprs[rd] ^ aluOut) >> 31);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructEOR = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[rd] ^ gprs[rm];
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDMIA = function(rn, rs) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var address = gprs[rn];
|
||
var total = 0;
|
||
var m, i;
|
||
for (m = 0x01, i = 0; i < 8; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
gprs[i] = cpu.mmu.load32(address);
|
||
address += 4;
|
||
++total;
|
||
}
|
||
}
|
||
cpu.mmu.waitMulti32(address, total);
|
||
if (!((1 << rn) & rs)) {
|
||
gprs[rn] = address;
|
||
}
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDR1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var n = gprs[rn] + immediate;
|
||
gprs[rd] = cpu.mmu.load32(n);
|
||
cpu.mmu.wait32(n);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDR2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.load32(gprs[rn] + gprs[rm]);
|
||
cpu.mmu.wait32(gprs[rn] + gprs[rm]);
|
||
++cpu.cycles;
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDR3 = function(rd, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.load32((gprs[ARMRegs.PC] & 0xFFFFFFFC) + immediate);
|
||
cpu.mmu.wait32(gprs[ARMRegs.PC]);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDR4 = function(rd, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.load32(gprs[ARMRegs.SP] + immediate);
|
||
cpu.mmu.wait32(gprs[ARMRegs.SP] + immediate);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRB1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var n = gprs[rn] + immediate;
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.loadU8(n);
|
||
cpu.mmu.wait(n);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRB2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.loadU8(gprs[rn] + gprs[rm]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRH1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var n = gprs[rn] + immediate;
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.loadU16(n);
|
||
cpu.mmu.wait(n);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRH2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.loadU16(gprs[rn] + gprs[rm]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRSB = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.load8(gprs[rn] + gprs[rm]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLDRSH = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = cpu.mmu.load16(gprs[rn] + gprs[rm]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
++cpu.cycles;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLSL1 = function(rd, rm, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
if (immediate == 0) {
|
||
gprs[rd] = gprs[rm];
|
||
} else {
|
||
cpu.cpsrC = gprs[rm] & (1 << (32 - immediate));
|
||
gprs[rd] = gprs[rm] << immediate;
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLSL2 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var rs = gprs[rm] & 0xFF;
|
||
if (rs) {
|
||
if (rs < 32) {
|
||
cpu.cpsrC = gprs[rd] & (1 << (32 - rs));
|
||
gprs[rd] <<= rs;
|
||
} else {
|
||
if (rs > 32) {
|
||
cpu.cpsrC = 0;
|
||
} else {
|
||
cpu.cpsrC = gprs[rd] & 0x00000001;
|
||
}
|
||
gprs[rd] = 0;
|
||
}
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructLSR1 = function(rd, rm, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
if (immediate == 0) {
|
||
cpu.cpsrC = gprs[rm] >> 31;
|
||
gprs[rd] = 0;
|
||
} else {
|
||
cpu.cpsrC = gprs[rm] & (1 << (immediate - 1));
|
||
gprs[rd] = gprs[rm] >>> immediate;
|
||
}
|
||
cpu.cpsrN = 0;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
}
|
||
|
||
ARMCoreThumb.prototype.constructLSR2 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var rs = gprs[rm] & 0xFF;
|
||
if (rs) {
|
||
if (rs < 32) {
|
||
cpu.cpsrC = gprs[rd] & (1 << (rs - 1));
|
||
gprs[rd] >>>= rs;
|
||
} else {
|
||
if (rs > 32) {
|
||
cpu.cpsrC = 0;
|
||
} else {
|
||
cpu.cpsrC = gprs[rd] >> 31;
|
||
}
|
||
gprs[rd] = 0;
|
||
}
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructMOV1 = function(rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rn] = immediate;
|
||
cpu.cpsrN = immediate >> 31;
|
||
cpu.cpsrZ = !(immediate & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructMOV2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = gprs[rn];
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = 0;
|
||
cpu.cpsrV = 0;
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructMOV3 = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[rm];
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructMUL = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
cpu.mmu.waitMul(gprs[rm]);
|
||
if ((gprs[rm] & 0xFFFF0000) && (gprs[rd] & 0xFFFF0000)) {
|
||
// Our data type is a double--we'll lose bits if we do it all at once!
|
||
var hi = ((gprs[rd] & 0xFFFF0000) * gprs[rm]) & 0xFFFFFFFF;
|
||
var lo = ((gprs[rd] & 0x0000FFFF) * gprs[rm]) & 0xFFFFFFFF;
|
||
gprs[rd] = (hi + lo) & 0xFFFFFFFF;
|
||
} else {
|
||
gprs[rd] *= gprs[rm];
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructMVN = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = ~gprs[rm];
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructNEG = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = -gprs[rm];
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = 0 >= (d >>> 0);
|
||
cpu.cpsrV = (gprs[rm] >> 31) && (d >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructORR = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
gprs[rd] = gprs[rd] | gprs[rm];
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructPOP = function(rs, r) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
++cpu.cycles;
|
||
var address = gprs[ARMRegs.SP];
|
||
var total = 0;
|
||
var m, i;
|
||
for (m = 0x01, i = 0; i < 8; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
cpu.mmu.waitSeq32(address);
|
||
gprs[i] = cpu.mmu.load32(address);
|
||
address += 4;
|
||
++total;
|
||
}
|
||
}
|
||
if (r) {
|
||
gprs[ARMRegs.PC] = cpu.mmu.load32(address) & 0xFFFFFFFE;
|
||
address += 4;
|
||
++total;
|
||
}
|
||
cpu.mmu.waitMulti32(address, total);
|
||
gprs[ARMRegs.SP] = address;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructPUSH = function(rs, r) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var address = gprs[ARMRegs.SP] - 4;
|
||
var total = 0;
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
if (r) {
|
||
cpu.mmu.store32(address, gprs[ARMRegs.LR]);
|
||
address -= 4;
|
||
++total;
|
||
}
|
||
var m, i;
|
||
for (m = 0x80, i = 7; m; m >>= 1, --i) {
|
||
if (rs & m) {
|
||
cpu.mmu.store32(address, gprs[i]);
|
||
address -= 4;
|
||
++total;
|
||
break;
|
||
}
|
||
}
|
||
for (m >>= 1, --i; m; m >>= 1, --i) {
|
||
if (rs & m) {
|
||
cpu.mmu.store32(address, gprs[i]);
|
||
address -= 4;
|
||
++total;
|
||
}
|
||
}
|
||
cpu.mmu.waitMulti32(address, total);
|
||
gprs[ARMRegs.SP] = address + 4;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructROR = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var rs = gprs[rm] & 0xFF;
|
||
if (rs) {
|
||
var r4 = rs & 0x1F;
|
||
if (r4 > 0) {
|
||
cpu.cpsrC = gprs[rd] & (1 << (r4 - 1));
|
||
gprs[rd] = (gprs[rd] >>> r4) | (gprs[rd] << (32 - r4));
|
||
} else {
|
||
cpu.cpsrC = gprs[rd] >> 31;
|
||
}
|
||
}
|
||
cpu.cpsrN = gprs[rd] >> 31;
|
||
cpu.cpsrZ = !(gprs[rd] & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSBC = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var m = (gprs[rm] >>> 0) + (cpu.cpsrC ? 0 : 1);
|
||
var d = (gprs[rd] >>> 0) - m;
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rd] >>> 0) >= (d >>> 0);
|
||
cpu.cpsrV = ((gprs[rd] ^ m) >> 31) && ((gprs[rd] ^ d) >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTMIA = function(rn, rs) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
var address = gprs[rn];
|
||
var total = 0;
|
||
var m, i;
|
||
for (m = 0x01, i = 0; i < 8; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
cpu.mmu.store32(address, gprs[i]);
|
||
address += 4;
|
||
++total;
|
||
break;
|
||
}
|
||
}
|
||
for (m <<= 1, ++i; i < 8; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
cpu.mmu.store32(address, gprs[i]);
|
||
address += 4;
|
||
++total;
|
||
}
|
||
}
|
||
cpu.mmu.waitMulti32(address, total);
|
||
gprs[rn] = address;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTR1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var n = gprs[rn] + immediate;
|
||
cpu.mmu.store32(n, gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait32(n);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTR2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.store32(gprs[rn] + gprs[rm], gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait32(gprs[rn] + gprs[rm]);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTR3 = function(rd, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.store32(gprs[ARMRegs.SP] + immediate, gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait32(gprs[ARMRegs.SP] + immediate);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTRB1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var n = gprs[rn] + immediate;
|
||
cpu.mmu.store8(n, gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait(n);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTRB2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.store8(gprs[rn] + gprs[rm], gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTRH1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
var n = gprs[rn] + immediate;
|
||
cpu.mmu.store16(n, gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait(n);
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSTRH2 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.store16(gprs[rn] + gprs[rm], gprs[rd]);
|
||
cpu.mmu.wait(gprs[ARMRegs.PC]);
|
||
cpu.mmu.wait(gprs[rn] + gprs[rm]);
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSUB1 = function(rd, rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = gprs[rn] - immediate;
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= immediate;
|
||
cpu.cpsrV = (gprs[rn] >> 31) && ((gprs[rn] ^ d) >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
}
|
||
|
||
ARMCoreThumb.prototype.constructSUB2 = function(rn, immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = gprs[rn] - immediate;
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= immediate;
|
||
cpu.cpsrV = (gprs[rn] >> 31) && ((gprs[rn] ^ d) >> 31);
|
||
gprs[rn] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSUB3 = function(rd, rn, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var d = gprs[rn] - gprs[rm];
|
||
cpu.cpsrN = d >> 31;
|
||
cpu.cpsrZ = !(d & 0xFFFFFFFF);
|
||
cpu.cpsrC = (gprs[rn] >>> 0) >= (gprs[rm] >>> 0);
|
||
cpu.cpsrV = (gprs[rn] >> 31) != (gprs[rm] >> 31) &&
|
||
(gprs[rn] >> 31) != (d >> 31);
|
||
gprs[rd] = d;
|
||
};
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructSWI = function(immediate) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.irq.swi(immediate);
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
}
|
||
};
|
||
|
||
ARMCoreThumb.prototype.constructTST = function(rd, rm) {
|
||
var cpu : ARMCoreType = this.cpu;
|
||
var gprs = cpu.gprs;
|
||
return function() {
|
||
cpu.mmu.waitPrefetch(gprs[ARMRegs.PC]);
|
||
var aluOut = gprs[rd] & gprs[rm];
|
||
cpu.cpsrN = aluOut >> 31;
|
||
cpu.cpsrZ = !(aluOut & 0xFFFFFFFF);
|
||
};
|
||
};
|
||
|
||
///////////////////////////////////////////////////////////////////////////
|
||
|
||
function ARMCore() {
|
||
this.SP = 13;
|
||
this.LR = 14;
|
||
this.PC = 15;
|
||
|
||
this.MODE_ARM = 0;
|
||
this.MODE_THUMB = 1;
|
||
|
||
this.MODE_USER = 0x10;
|
||
this.MODE_FIQ = 0x11;
|
||
this.MODE_IRQ = 0x12;
|
||
this.MODE_SUPERVISOR = 0x13;
|
||
this.MODE_ABORT = 0x17;
|
||
this.MODE_UNDEFINED = 0x1B;
|
||
this.MODE_SYSTEM = 0x1F;
|
||
|
||
this.BANK_NONE = 0
|
||
this.BANK_FIQ = 1;
|
||
this.BANK_IRQ = 2;
|
||
this.BANK_SUPERVISOR = 3;
|
||
this.BANK_ABORT = 4;
|
||
this.BANK_UNDEFINED = 5;
|
||
|
||
this.WORD_SIZE_ARM = 4;
|
||
this.WORD_SIZE_THUMB = 2;
|
||
|
||
this.BASE_RESET = 0x00000000;
|
||
this.BASE_UNDEF = 0x00000004;
|
||
this.BASE_SWI = 0x00000008;
|
||
this.BASE_PABT = 0x0000000C;
|
||
this.BASE_DABT = 0x00000010;
|
||
this.BASE_IRQ = 0x00000018;
|
||
this.BASE_FIQ = 0x0000001C;
|
||
|
||
this.armCompiler = new ARMCoreArm(this);
|
||
this.thumbCompiler = new ARMCoreThumb(this);
|
||
this.generateConds();
|
||
|
||
this.gprs = new Int32Array(16);
|
||
this.dfprs = new Float64Array(16);
|
||
this.sfprs = new Float32Array(this.dfprs.buffer); // regs shared with dfprs
|
||
this.ifprs = new Int32Array(this.dfprs.buffer); // regs shared with dfprs
|
||
};
|
||
|
||
ARMCore.prototype.resetCPU = function(startOffset) {
|
||
for (var i = 0; i < ARMRegs.PC; ++i) {
|
||
this.gprs[i] = 0;
|
||
}
|
||
this.gprs[ARMRegs.PC] = startOffset + ARMConstants.WORD_SIZE_ARM;
|
||
this.dfprs.set(0); // no need to zero the sfprs, since they share the same buffer
|
||
|
||
this.loadInstruction = this.loadInstructionArm;
|
||
this.execMode = ARMMode.MODE_ARM;
|
||
this.instructionWidth = ARMConstants.WORD_SIZE_ARM;
|
||
|
||
this.mode = ARMMode.MODE_SYSTEM;
|
||
|
||
this.cpsrI = false;
|
||
this.cpsrF = false;
|
||
|
||
this.cpsrV = false;
|
||
this.cpsrC = false;
|
||
this.cpsrZ = false;
|
||
this.cpsrN = false;
|
||
|
||
this.bankedRegisters = [
|
||
new Int32Array(7),
|
||
new Int32Array(7),
|
||
new Int32Array(2),
|
||
new Int32Array(2),
|
||
new Int32Array(2),
|
||
new Int32Array(2)
|
||
];
|
||
this.spsr = 0;
|
||
this.bankedSPSRs = new Int32Array(6);
|
||
|
||
this.cycles = 0;
|
||
|
||
this.shifterOperand = 0;
|
||
this.shifterCarryOut = 0;
|
||
|
||
this.page = null;
|
||
this.pageId = 0;
|
||
this.pageRegion = -1;
|
||
|
||
this.instruction = null;
|
||
|
||
this.irq.clear();
|
||
|
||
var gprs = this.gprs;
|
||
var mmu = this.mmu as ARMMMUInterface;
|
||
|
||
this.step = function() {
|
||
var instruction = this.instruction || (this.instruction = this.loadInstruction(gprs[ARMRegs.PC] - this.instructionWidth));
|
||
gprs[ARMRegs.PC] += this.instructionWidth;
|
||
this.conditionPassed = true;
|
||
instruction();
|
||
|
||
if (!instruction.writesPC) {
|
||
if (this.instruction != null) { // We might have gotten an interrupt from the instruction
|
||
if (instruction.next == null || instruction.next.page.invalid) {
|
||
instruction.next = this.loadInstruction(gprs[ARMRegs.PC] - this.instructionWidth);
|
||
}
|
||
this.instruction = instruction.next;
|
||
}
|
||
} else {
|
||
if (this.conditionPassed) {
|
||
var pc = gprs[ARMRegs.PC] &= 0xFFFFFFFE;
|
||
if (this.execMode == ARMMode.MODE_ARM) {
|
||
mmu.wait32(pc);
|
||
mmu.waitPrefetch32(pc);
|
||
} else {
|
||
mmu.wait(pc);
|
||
mmu.waitPrefetch(pc);
|
||
}
|
||
gprs[ARMRegs.PC] += this.instructionWidth;
|
||
if (!instruction.fixedJump) {
|
||
this.instruction = null;
|
||
} else if (this.instruction != null) {
|
||
if (instruction.next == null || instruction.next.page.invalid) {
|
||
instruction.next = this.loadInstruction(gprs[ARMRegs.PC] - this.instructionWidth);
|
||
}
|
||
this.instruction = instruction.next;
|
||
}
|
||
} else {
|
||
this.instruction = null;
|
||
}
|
||
}
|
||
this.irq.updateTimers();
|
||
};
|
||
};
|
||
|
||
ARMCore.prototype.freeze = function() : ARMCoreState {
|
||
return {
|
||
PC: this.gprs[15] - this.instructionWidth,
|
||
SP: this.gprs[13],
|
||
'gprs': [
|
||
this.gprs[0],
|
||
this.gprs[1],
|
||
this.gprs[2],
|
||
this.gprs[3],
|
||
this.gprs[4],
|
||
this.gprs[5],
|
||
this.gprs[6],
|
||
this.gprs[7],
|
||
this.gprs[8],
|
||
this.gprs[9],
|
||
this.gprs[10],
|
||
this.gprs[11],
|
||
this.gprs[12],
|
||
this.gprs[13],
|
||
this.gprs[14],
|
||
this.gprs[15],
|
||
],
|
||
'sfprs': this.sfprs.slice(),
|
||
'dfprs': this.dfprs.slice(),
|
||
'ifprs': this.ifprs.slice(),
|
||
'mode': this.mode,
|
||
'cpsrI': this.cpsrI,
|
||
'cpsrF': this.cpsrF,
|
||
'cpsrV': this.cpsrV,
|
||
'cpsrC': this.cpsrC,
|
||
'cpsrZ': this.cpsrZ,
|
||
'cpsrN': this.cpsrN,
|
||
'bankedRegisters': [
|
||
[
|
||
this.bankedRegisters[0][0],
|
||
this.bankedRegisters[0][1],
|
||
this.bankedRegisters[0][2],
|
||
this.bankedRegisters[0][3],
|
||
this.bankedRegisters[0][4],
|
||
this.bankedRegisters[0][5],
|
||
this.bankedRegisters[0][6]
|
||
],
|
||
[
|
||
this.bankedRegisters[1][0],
|
||
this.bankedRegisters[1][1],
|
||
this.bankedRegisters[1][2],
|
||
this.bankedRegisters[1][3],
|
||
this.bankedRegisters[1][4],
|
||
this.bankedRegisters[1][5],
|
||
this.bankedRegisters[1][6]
|
||
],
|
||
[
|
||
this.bankedRegisters[2][0],
|
||
this.bankedRegisters[2][1]
|
||
],
|
||
[
|
||
this.bankedRegisters[3][0],
|
||
this.bankedRegisters[3][1]
|
||
],
|
||
[
|
||
this.bankedRegisters[4][0],
|
||
this.bankedRegisters[4][1]
|
||
],
|
||
[
|
||
this.bankedRegisters[5][0],
|
||
this.bankedRegisters[5][1]
|
||
]
|
||
],
|
||
'spsr': this.spsr,
|
||
'bankedSPSRs': [
|
||
this.bankedSPSRs[0],
|
||
this.bankedSPSRs[1],
|
||
this.bankedSPSRs[2],
|
||
this.bankedSPSRs[3],
|
||
this.bankedSPSRs[4],
|
||
this.bankedSPSRs[5]
|
||
],
|
||
'cycles': this.cycles,
|
||
'instructionWidth': this.instructionWidth,
|
||
};
|
||
};
|
||
|
||
ARMCore.prototype.defrost = function(frost: ARMCoreState) {
|
||
this.instruction = null;
|
||
|
||
this.page = null;
|
||
this.pageId = 0;
|
||
this.pageRegion = -1;
|
||
|
||
this.gprs[0] = frost.gprs[0];
|
||
this.gprs[1] = frost.gprs[1];
|
||
this.gprs[2] = frost.gprs[2];
|
||
this.gprs[3] = frost.gprs[3];
|
||
this.gprs[4] = frost.gprs[4];
|
||
this.gprs[5] = frost.gprs[5];
|
||
this.gprs[6] = frost.gprs[6];
|
||
this.gprs[7] = frost.gprs[7];
|
||
this.gprs[8] = frost.gprs[8];
|
||
this.gprs[9] = frost.gprs[9];
|
||
this.gprs[10] = frost.gprs[10];
|
||
this.gprs[11] = frost.gprs[11];
|
||
this.gprs[12] = frost.gprs[12];
|
||
this.gprs[13] = frost.gprs[13];
|
||
this.gprs[14] = frost.gprs[14];
|
||
this.gprs[15] = frost.gprs[15];
|
||
|
||
this.ifprs.set(frost.ifprs); // regs shared with sfprs
|
||
|
||
this.mode = frost.mode;
|
||
this.cpsrI = frost.cpsrI;
|
||
this.cpsrF = frost.cpsrF;
|
||
this.cpsrV = frost.cpsrV;
|
||
this.cpsrC = frost.cpsrC;
|
||
this.cpsrZ = frost.cpsrZ;
|
||
this.cpsrN = frost.cpsrN;
|
||
|
||
this.bankedRegisters[0][0] = frost.bankedRegisters[0][0];
|
||
this.bankedRegisters[0][1] = frost.bankedRegisters[0][1];
|
||
this.bankedRegisters[0][2] = frost.bankedRegisters[0][2];
|
||
this.bankedRegisters[0][3] = frost.bankedRegisters[0][3];
|
||
this.bankedRegisters[0][4] = frost.bankedRegisters[0][4];
|
||
this.bankedRegisters[0][5] = frost.bankedRegisters[0][5];
|
||
this.bankedRegisters[0][6] = frost.bankedRegisters[0][6];
|
||
|
||
this.bankedRegisters[1][0] = frost.bankedRegisters[1][0];
|
||
this.bankedRegisters[1][1] = frost.bankedRegisters[1][1];
|
||
this.bankedRegisters[1][2] = frost.bankedRegisters[1][2];
|
||
this.bankedRegisters[1][3] = frost.bankedRegisters[1][3];
|
||
this.bankedRegisters[1][4] = frost.bankedRegisters[1][4];
|
||
this.bankedRegisters[1][5] = frost.bankedRegisters[1][5];
|
||
this.bankedRegisters[1][6] = frost.bankedRegisters[1][6];
|
||
|
||
this.bankedRegisters[2][0] = frost.bankedRegisters[2][0];
|
||
this.bankedRegisters[2][1] = frost.bankedRegisters[2][1];
|
||
|
||
this.bankedRegisters[3][0] = frost.bankedRegisters[3][0];
|
||
this.bankedRegisters[3][1] = frost.bankedRegisters[3][1];
|
||
|
||
this.bankedRegisters[4][0] = frost.bankedRegisters[4][0];
|
||
this.bankedRegisters[4][1] = frost.bankedRegisters[4][1];
|
||
|
||
this.bankedRegisters[5][0] = frost.bankedRegisters[5][0];
|
||
this.bankedRegisters[5][1] = frost.bankedRegisters[5][1];
|
||
|
||
this.spsr = frost.spsr;
|
||
this.bankedSPSRs[0] = frost.bankedSPSRs[0];
|
||
this.bankedSPSRs[1] = frost.bankedSPSRs[1];
|
||
this.bankedSPSRs[2] = frost.bankedSPSRs[2];
|
||
this.bankedSPSRs[3] = frost.bankedSPSRs[3];
|
||
this.bankedSPSRs[4] = frost.bankedSPSRs[4];
|
||
this.bankedSPSRs[5] = frost.bankedSPSRs[5];
|
||
|
||
this.cycles = frost.cycles;
|
||
|
||
this.instructionWidth = frost.instructionWidth;
|
||
this.loadInstruction = frost.instructionWidth == 2 ? this.loadInstructionThumb : this.loadInstructionArm;
|
||
this.execMode = frost.instructionWidth == 2 ? ARMMode.MODE_THUMB : ARMMode.MODE_ARM;
|
||
};
|
||
|
||
ARMCore.prototype.fetchPage = function(address : number) {
|
||
var mmu = this.mmu;
|
||
var region = address >>> mmu.BASE_OFFSET;
|
||
var pageId = mmu.addressToPage(region, address & mmu.OFFSET_MASK);
|
||
if (region == this.pageRegion) {
|
||
if (pageId == this.pageId && !(this.page as ARMMemoryPage).invalid) {
|
||
return;
|
||
}
|
||
this.pageId = pageId;
|
||
} else {
|
||
this.pageMask = mmu.memory[region].PAGE_MASK;
|
||
this.pageRegion = region;
|
||
this.pageId = pageId;
|
||
}
|
||
|
||
this.page = mmu.accessPage(region, pageId);
|
||
};
|
||
|
||
ARMCore.prototype.loadInstructionArm = function(address : number) {
|
||
var next : ARMOperation = null;
|
||
this.fetchPage(address);
|
||
var offset = (address & this.pageMask) >> 2;
|
||
next = (this.page as ARMMemoryPage).arm[offset];
|
||
if (next) {
|
||
return next;
|
||
}
|
||
var instruction = this.mmu.load32(address) >>> 0;
|
||
next = this.compileArm(instruction);
|
||
next.next = null;
|
||
next.page = this.page;
|
||
next.address = address;
|
||
next.opcode = instruction;
|
||
(this.page as ARMMemoryPage).arm[offset] = next;
|
||
return next;
|
||
};
|
||
|
||
ARMCore.prototype.loadInstructionThumb = function(address : number) {
|
||
var next : ARMOperation = null;
|
||
this.fetchPage(address);
|
||
var offset = (address & this.pageMask) >> 1;
|
||
next = (this.page as ARMMemoryPage).thumb[offset];
|
||
if (next) {
|
||
return next;
|
||
}
|
||
var instruction = this.mmu.load16(address);
|
||
next = this.compileThumb(instruction);
|
||
next.next = null;
|
||
next.page = this.page;
|
||
next.address = address;
|
||
next.opcode = instruction;
|
||
(this.page as ARMMemoryPage).thumb[offset] = next;
|
||
return next;
|
||
};
|
||
|
||
ARMCore.prototype.selectBank = function(mode : ARMMode) {
|
||
switch (mode) {
|
||
case ARMMode.MODE_USER:
|
||
case ARMMode.MODE_SYSTEM:
|
||
// No banked registers
|
||
return ARMConstants.BANK_NONE;
|
||
case ARMMode.MODE_FIQ:
|
||
return ARMConstants.BANK_FIQ;
|
||
case ARMMode.MODE_IRQ:
|
||
return ARMConstants.BANK_IRQ;
|
||
case ARMMode.MODE_SUPERVISOR:
|
||
return ARMConstants.BANK_SUPERVISOR;
|
||
case ARMMode.MODE_ABORT:
|
||
return ARMConstants.BANK_ABORT;
|
||
case ARMMode.MODE_UNDEFINED:
|
||
return ARMConstants.BANK_UNDEFINED;
|
||
default:
|
||
throw new EmuHalt("Invalid user mode " + mode + " passed to selectBank");
|
||
}
|
||
};
|
||
|
||
ARMCore.prototype.switchExecMode = function(newMode) {
|
||
if (this.execMode != newMode) {
|
||
this.execMode = newMode;
|
||
if (newMode == ARMMode.MODE_ARM) {
|
||
this.instructionWidth = ARMConstants.WORD_SIZE_ARM;
|
||
this.loadInstruction = this.loadInstructionArm;
|
||
} else {
|
||
this.instructionWidth = ARMConstants.WORD_SIZE_THUMB;
|
||
this.loadInstruction = this.loadInstructionThumb;
|
||
}
|
||
}
|
||
|
||
};
|
||
|
||
ARMCore.prototype.switchMode = function(newMode) {
|
||
if (newMode == this.mode) {
|
||
// Not switching modes after all
|
||
return;
|
||
}
|
||
if (newMode != ARMMode.MODE_USER || newMode != ARMMode.MODE_SYSTEM) {
|
||
// Switch banked registers
|
||
var newBank = this.selectBank(newMode);
|
||
var oldBank = this.selectBank(this.mode);
|
||
if (newBank != oldBank) {
|
||
// TODO: support FIQ
|
||
if (newMode == ARMMode.MODE_FIQ || this.mode == ARMMode.MODE_FIQ) {
|
||
var oldFiqBank = (oldBank == ARMConstants.BANK_FIQ) ? 1 : 0;
|
||
var newFiqBank = (newBank == ARMConstants.BANK_FIQ) ? 1 : 0;
|
||
this.bankedRegisters[oldFiqBank][2] = this.gprs[8];
|
||
this.bankedRegisters[oldFiqBank][3] = this.gprs[9];
|
||
this.bankedRegisters[oldFiqBank][4] = this.gprs[10];
|
||
this.bankedRegisters[oldFiqBank][5] = this.gprs[11];
|
||
this.bankedRegisters[oldFiqBank][6] = this.gprs[12];
|
||
this.gprs[8] = this.bankedRegisters[newFiqBank][2];
|
||
this.gprs[9] = this.bankedRegisters[newFiqBank][3];
|
||
this.gprs[10] = this.bankedRegisters[newFiqBank][4];
|
||
this.gprs[11] = this.bankedRegisters[newFiqBank][5];
|
||
this.gprs[12] = this.bankedRegisters[newFiqBank][6];
|
||
}
|
||
this.bankedRegisters[oldBank][0] = this.gprs[ARMRegs.SP];
|
||
this.bankedRegisters[oldBank][1] = this.gprs[ARMRegs.LR];
|
||
this.gprs[ARMRegs.SP] = this.bankedRegisters[newBank][0];
|
||
this.gprs[ARMRegs.LR] = this.bankedRegisters[newBank][1];
|
||
|
||
this.bankedSPSRs[oldBank] = this.spsr;
|
||
this.spsr = this.bankedSPSRs[newBank];
|
||
}
|
||
}
|
||
this.mode = newMode;
|
||
};
|
||
|
||
ARMCore.prototype.packCPSR = function() {
|
||
return this.mode | (this.execMode << 5) | (this.cpsrF << 6) | (this.cpsrI << 7) |
|
||
(this.cpsrN << 31) | (this.cpsrZ << 30) | (this.cpsrC << 29) | (this.cpsrV << 28);
|
||
};
|
||
|
||
ARMCore.prototype.unpackCPSR = function(spsr) {
|
||
this.switchMode(spsr & 0x0000001F);
|
||
this.switchExecMode(!!(spsr & 0x00000020));
|
||
this.cpsrF = spsr & 0x00000040;
|
||
this.cpsrI = spsr & 0x00000080;
|
||
this.cpsrN = spsr & 0x80000000;
|
||
this.cpsrZ = spsr & 0x40000000;
|
||
this.cpsrC = spsr & 0x20000000;
|
||
this.cpsrV = spsr & 0x10000000;
|
||
|
||
this.irq.testIRQ();
|
||
};
|
||
|
||
ARMCore.prototype.hasSPSR = function() {
|
||
return this.mode != ARMMode.MODE_SYSTEM && this.mode != ARMMode.MODE_USER;
|
||
};
|
||
|
||
ARMCore.prototype.raiseIRQ = function() {
|
||
if (this.cpsrI) {
|
||
return;
|
||
}
|
||
var cpsr = this.packCPSR();
|
||
var instructionWidth = this.instructionWidth;
|
||
this.switchMode(ARMMode.MODE_IRQ);
|
||
this.spsr = cpsr;
|
||
this.gprs[ARMRegs.LR] = this.gprs[ARMRegs.PC] - instructionWidth + 4;
|
||
this.gprs[ARMRegs.PC] = this.BASE_IRQ + ARMConstants.WORD_SIZE_ARM;
|
||
this.instruction = null;
|
||
this.switchExecMode(ARMMode.MODE_ARM);
|
||
this.cpsrI = true;
|
||
};
|
||
|
||
ARMCore.prototype.raiseTrap = function() {
|
||
var cpsr = this.packCPSR();
|
||
var instructionWidth = this.instructionWidth;
|
||
this.switchMode(ARMMode.MODE_SUPERVISOR);
|
||
this.spsr = cpsr;
|
||
this.gprs[ARMRegs.LR] = this.gprs[ARMRegs.PC] - instructionWidth;
|
||
this.gprs[ARMRegs.PC] = this.BASE_SWI + ARMConstants.WORD_SIZE_ARM;
|
||
this.instruction = null;
|
||
this.switchExecMode(ARMMode.MODE_ARM);
|
||
this.cpsrI = true;
|
||
};
|
||
|
||
ARMCore.prototype.badOp = function(instruction) {
|
||
var func : AddressFunction = function() {
|
||
throw new EmuHalt("Illegal instruction: 0x" + instruction.toString(16));
|
||
};
|
||
func.writesPC = true;
|
||
func.fixedJump = false;
|
||
return func;
|
||
};
|
||
|
||
ARMCore.prototype.generateConds = function() {
|
||
var cpu = this;
|
||
this.conds = [
|
||
// EQ
|
||
function() {
|
||
return cpu.conditionPassed = cpu.cpsrZ;
|
||
},
|
||
// NE
|
||
function() {
|
||
return cpu.conditionPassed = !cpu.cpsrZ;
|
||
},
|
||
// CS
|
||
function() {
|
||
return cpu.conditionPassed = cpu.cpsrC;
|
||
},
|
||
// CC
|
||
function() {
|
||
return cpu.conditionPassed = !cpu.cpsrC;
|
||
},
|
||
// MI
|
||
function() {
|
||
return cpu.conditionPassed = cpu.cpsrN;
|
||
},
|
||
// PL
|
||
function() {
|
||
return cpu.conditionPassed = !cpu.cpsrN;
|
||
},
|
||
// VS
|
||
function() {
|
||
return cpu.conditionPassed = cpu.cpsrV;
|
||
},
|
||
// VC
|
||
function() {
|
||
return cpu.conditionPassed = !cpu.cpsrV;
|
||
},
|
||
// HI
|
||
function () {
|
||
return cpu.conditionPassed = cpu.cpsrC && !cpu.cpsrZ;
|
||
},
|
||
// LS
|
||
function () {
|
||
return cpu.conditionPassed = !cpu.cpsrC || cpu.cpsrZ;
|
||
},
|
||
// GE
|
||
function () {
|
||
return cpu.conditionPassed = !cpu.cpsrN == !cpu.cpsrV;
|
||
},
|
||
// LT
|
||
function () {
|
||
return cpu.conditionPassed = !cpu.cpsrN != !cpu.cpsrV;
|
||
},
|
||
// GT
|
||
function () {
|
||
return cpu.conditionPassed = !cpu.cpsrZ && !cpu.cpsrN == !cpu.cpsrV;
|
||
},
|
||
// LE
|
||
function () {
|
||
return cpu.conditionPassed = cpu.cpsrZ || !cpu.cpsrN != !cpu.cpsrV;
|
||
},
|
||
// AL
|
||
null,
|
||
null
|
||
]
|
||
}
|
||
|
||
ARMCore.prototype.barrelShiftImmediate = function(shiftType, immediate, rm) {
|
||
var cpu = this;
|
||
var gprs = this.gprs;
|
||
var shiftOp = this.badOp;
|
||
switch (shiftType) {
|
||
case 0x00000000:
|
||
// LSL
|
||
if (immediate) {
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = gprs[rm] << immediate;
|
||
cpu.shifterCarryOut = gprs[rm] & (1 << (32 - immediate));
|
||
};
|
||
} else {
|
||
// This boils down to no shift
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = gprs[rm];
|
||
cpu.shifterCarryOut = cpu.cpsrC;
|
||
};
|
||
}
|
||
break;
|
||
case 0x00000020:
|
||
// LSR
|
||
if (immediate) {
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = gprs[rm] >>> immediate;
|
||
cpu.shifterCarryOut = gprs[rm] & (1 << (immediate - 1));
|
||
};
|
||
} else {
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = 0;
|
||
cpu.shifterCarryOut = gprs[rm] & 0x80000000;
|
||
};
|
||
}
|
||
break;
|
||
case 0x00000040:
|
||
// ASR
|
||
if (immediate) {
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = gprs[rm] >> immediate;
|
||
cpu.shifterCarryOut = gprs[rm] & (1 << (immediate - 1));
|
||
};
|
||
} else {
|
||
shiftOp = function() {
|
||
cpu.shifterCarryOut = gprs[rm] & 0x80000000;
|
||
if (cpu.shifterCarryOut) {
|
||
cpu.shifterOperand = 0xFFFFFFFF;
|
||
} else {
|
||
cpu.shifterOperand = 0;
|
||
}
|
||
};
|
||
}
|
||
break;
|
||
case 0x00000060:
|
||
// ROR
|
||
if (immediate) {
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = (gprs[rm] >>> immediate) | (gprs[rm] << (32 - immediate));
|
||
cpu.shifterCarryOut = gprs[rm] & (1 << (immediate - 1));
|
||
};
|
||
} else {
|
||
// RRX
|
||
shiftOp = function() {
|
||
cpu.shifterOperand = ((cpu.cpsrC ? 1 : 0) << 31) | (gprs[rm] >>> 1);
|
||
cpu.shifterCarryOut = gprs[rm] & 0x00000001;
|
||
};
|
||
}
|
||
break;
|
||
}
|
||
return shiftOp;
|
||
}
|
||
|
||
ARMCore.prototype.compileArm = function(instruction) {
|
||
var op = this.badOp(instruction);
|
||
var i = instruction & 0x0E000000;
|
||
var cpu = this;
|
||
var gprs = this.gprs;
|
||
|
||
var condOp = this.conds[(instruction & 0xF0000000) >>> 28];
|
||
if ((instruction & 0x0FFFFFF0) == 0x012FFF10) {
|
||
// BX
|
||
var rm = instruction & 0xF;
|
||
op = this.armCompiler.constructBX(rm, condOp);
|
||
op.writesPC = true;
|
||
op.fixedJump = false;
|
||
} else if (!(instruction & 0x0C000000) && (i == 0x02000000 || (instruction & 0x00000090) != 0x00000090)) {
|
||
var opcode = instruction & 0x01E00000;
|
||
var s = instruction & 0x00100000;
|
||
var shiftsRs = false;
|
||
if ((opcode & 0x01800000) == 0x01000000 && !s) {
|
||
var r = instruction & 0x00400000;
|
||
if ((instruction & 0x00B0F000) == 0x0020F000) {
|
||
// MSR
|
||
var rm = instruction & 0x0000000F;
|
||
var immediate = instruction & 0x000000FF;
|
||
var rotateImm = (instruction & 0x00000F00) >> 7;
|
||
immediate = (immediate >>> rotateImm) | (immediate << (32 - rotateImm));
|
||
op = this.armCompiler.constructMSR(rm, r, instruction, immediate, condOp);
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0x00BF0000) == 0x000F0000) {
|
||
// MRS
|
||
var rd = (instruction & 0x0000F000) >> 12;
|
||
op = this.armCompiler.constructMRS(rd, r, condOp);
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
}
|
||
} else {
|
||
// Data processing/FSR transfer
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
var rd = (instruction & 0x0000F000) >> 12;
|
||
|
||
// Parse shifter operand
|
||
var shiftType = instruction & 0x00000060;
|
||
var rm = instruction & 0x0000000F;
|
||
var shiftOp = function() {
|
||
throw new EmuHalt('BUG: invalid barrel shifter');
|
||
};
|
||
if (instruction & 0x02000000) {
|
||
var immediate = instruction & 0x000000FF;
|
||
var rotate = (instruction & 0x00000F00) >> 7;
|
||
if (!rotate) {
|
||
shiftOp = this.armCompiler.constructAddressingMode1Immediate(immediate);
|
||
} else {
|
||
shiftOp = this.armCompiler.constructAddressingMode1ImmediateRotate(immediate, rotate);
|
||
}
|
||
} else if (instruction & 0x00000010) {
|
||
var rs = (instruction & 0x00000F00) >> 8;
|
||
shiftsRs = true;
|
||
switch (shiftType) {
|
||
case 0x00000000:
|
||
// LSL
|
||
shiftOp = this.armCompiler.constructAddressingMode1LSL(rs, rm);
|
||
break;
|
||
case 0x00000020:
|
||
// LSR
|
||
shiftOp = this.armCompiler.constructAddressingMode1LSR(rs, rm);
|
||
break;
|
||
case 0x00000040:
|
||
// ASR
|
||
shiftOp = this.armCompiler.constructAddressingMode1ASR(rs, rm);
|
||
break;
|
||
case 0x00000060:
|
||
// ROR
|
||
shiftOp = this.armCompiler.constructAddressingMode1ROR(rs, rm);
|
||
break;
|
||
}
|
||
} else {
|
||
var immediate = (instruction & 0x00000F80) >> 7;
|
||
shiftOp = this.barrelShiftImmediate(shiftType, immediate, rm);
|
||
}
|
||
|
||
switch (opcode) {
|
||
case 0x00000000:
|
||
// AND
|
||
if (s) {
|
||
op = this.armCompiler.constructANDS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructAND(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00200000:
|
||
// EOR
|
||
if (s) {
|
||
op = this.armCompiler.constructEORS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructEOR(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00400000:
|
||
// SUB
|
||
if (s) {
|
||
op = this.armCompiler.constructSUBS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructSUB(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00600000:
|
||
// RSB
|
||
if (s) {
|
||
op = this.armCompiler.constructRSBS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructRSB(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00800000:
|
||
// ADD
|
||
if (s) {
|
||
op = this.armCompiler.constructADDS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructADD(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00A00000:
|
||
// ADC
|
||
if (s) {
|
||
op = this.armCompiler.constructADCS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructADC(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00C00000:
|
||
// SBC
|
||
if (s) {
|
||
op = this.armCompiler.constructSBCS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructSBC(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x00E00000:
|
||
// RSC
|
||
if (s) {
|
||
op = this.armCompiler.constructRSCS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructRSC(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x01000000:
|
||
// TST
|
||
op = this.armCompiler.constructTST(rd, rn, shiftOp, condOp);
|
||
break;
|
||
case 0x01200000:
|
||
// TEQ
|
||
op = this.armCompiler.constructTEQ(rd, rn, shiftOp, condOp);
|
||
break;
|
||
case 0x01400000:
|
||
// CMP
|
||
op = this.armCompiler.constructCMP(rd, rn, shiftOp, condOp);
|
||
break;
|
||
case 0x01600000:
|
||
// CMN
|
||
op = this.armCompiler.constructCMN(rd, rn, shiftOp, condOp);
|
||
break;
|
||
case 0x01800000:
|
||
// ORR
|
||
if (s) {
|
||
op = this.armCompiler.constructORRS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructORR(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x01A00000:
|
||
// MOV
|
||
if (s) {
|
||
op = this.armCompiler.constructMOVS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructMOV(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x01C00000:
|
||
// BIC
|
||
if (s) {
|
||
op = this.armCompiler.constructBICS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructBIC(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
case 0x01E00000:
|
||
// MVN
|
||
if (s) {
|
||
op = this.armCompiler.constructMVNS(rd, rn, shiftOp, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructMVN(rd, rn, shiftOp, condOp);
|
||
}
|
||
break;
|
||
}
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
}
|
||
} else if ((instruction & 0x0FB00FF0) == 0x01000090) {
|
||
// Single data swap
|
||
var rm = instruction & 0x0000000F;
|
||
var rd = (instruction >> 12) & 0x0000000F;
|
||
var rn = (instruction >> 16) & 0x0000000F;
|
||
if (instruction & 0x00400000) {
|
||
op = this.armCompiler.constructSWPB(rd, rn, rm, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructSWP(rd, rn, rm, condOp);
|
||
}
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
} else {
|
||
switch (i) {
|
||
case 0x00000000:
|
||
if ((instruction & 0x010000F0) == 0x00000090) {
|
||
// Multiplies
|
||
var rd = (instruction & 0x000F0000) >> 16;
|
||
var rn = (instruction & 0x0000F000) >> 12;
|
||
var rs = (instruction & 0x00000F00) >> 8;
|
||
var rm = instruction & 0x0000000F;
|
||
switch (instruction & 0x00F00000) {
|
||
case 0x00000000:
|
||
// MUL
|
||
op = this.armCompiler.constructMUL(rd, rs, rm, condOp);
|
||
break;
|
||
case 0x00100000:
|
||
// MULS
|
||
op = this.armCompiler.constructMULS(rd, rs, rm, condOp);
|
||
break;
|
||
case 0x00200000:
|
||
// MLA
|
||
op = this.armCompiler.constructMLA(rd, rn, rs, rm, condOp);
|
||
break
|
||
case 0x00300000:
|
||
// MLAS
|
||
op = this.armCompiler.constructMLAS(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00800000:
|
||
// UMULL
|
||
op = this.armCompiler.constructUMULL(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00900000:
|
||
// UMULLS
|
||
op = this.armCompiler.constructUMULLS(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00A00000:
|
||
// UMLAL
|
||
op = this.armCompiler.constructUMLAL(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00B00000:
|
||
// UMLALS
|
||
op = this.armCompiler.constructUMLALS(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00C00000:
|
||
// SMULL
|
||
op = this.armCompiler.constructSMULL(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00D00000:
|
||
// SMULLS
|
||
op = this.armCompiler.constructSMULLS(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00E00000:
|
||
// SMLAL
|
||
op = this.armCompiler.constructSMLAL(rd, rn, rs, rm, condOp);
|
||
break;
|
||
case 0x00F00000:
|
||
// SMLALS
|
||
op = this.armCompiler.constructSMLALS(rd, rn, rs, rm, condOp);
|
||
break;
|
||
}
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
} else {
|
||
// Halfword and signed byte data transfer
|
||
var load = instruction & 0x00100000;
|
||
var rd = (instruction & 0x0000F000) >> 12;
|
||
var hiOffset = (instruction & 0x00000F00) >> 4;
|
||
var loOffset = rm = instruction & 0x0000000F;
|
||
var h = instruction & 0x00000020;
|
||
var s = instruction & 0x00000040;
|
||
var w = instruction & 0x00200000;
|
||
var i = instruction & 0x00400000;
|
||
|
||
var address : AddressFunction;
|
||
if (i) {
|
||
var immediate = loOffset | hiOffset;
|
||
address = this.armCompiler.constructAddressingMode23Immediate(instruction, immediate, condOp);
|
||
} else {
|
||
address = this.armCompiler.constructAddressingMode23Register(instruction, rm, condOp);
|
||
}
|
||
address.writesPC = !!w && rn == ARMRegs.PC;
|
||
|
||
if ((instruction & 0x00000090) == 0x00000090) {
|
||
if (load) {
|
||
// Load [signed] halfword/byte
|
||
if (h) {
|
||
if (s) {
|
||
// LDRSH
|
||
op = this.armCompiler.constructLDRSH(rd, address, condOp);
|
||
} else {
|
||
// LDRH
|
||
op = this.armCompiler.constructLDRH(rd, address, condOp);
|
||
}
|
||
} else {
|
||
if (s) {
|
||
// LDRSB
|
||
op = this.armCompiler.constructLDRSB(rd, address, condOp);
|
||
}
|
||
}
|
||
} else if (!s && h) {
|
||
// STRH
|
||
op = this.armCompiler.constructSTRH(rd, address, condOp);
|
||
}
|
||
}
|
||
op.writesPC = rd == ARMRegs.PC || address.writesPC;
|
||
}
|
||
break;
|
||
case 0x04000000:
|
||
case 0x06000000:
|
||
// LDR/STR
|
||
var rd = (instruction & 0x0000F000) >> 12;
|
||
var load = instruction & 0x00100000;
|
||
var b = instruction & 0x00400000;
|
||
var i = instruction & 0x02000000;
|
||
// test for UDF instruction
|
||
if ((instruction & 0xfff000f0) == (0xe7f000f0|0)) {
|
||
var immediate = instruction & 0x0000000f; // TODO: full range
|
||
throw new EmuHalt("Program exited (" + immediate + ")");
|
||
}
|
||
|
||
var address : AddressFunction = function() {
|
||
throw new EmuHalt("Unimplemented memory access: 0x" + instruction.toString(16));
|
||
};
|
||
if (~instruction & 0x01000000) {
|
||
// Clear the W bit if the P bit is clear--we don't support memory translation, so these turn into regular accesses
|
||
instruction &= 0xFFDFFFFF;
|
||
}
|
||
if (i) {
|
||
// Register offset
|
||
var rm = instruction & 0x0000000F;
|
||
var shiftType = instruction & 0x00000060;
|
||
var shiftImmediate = (instruction & 0x00000F80) >> 7;
|
||
|
||
if (shiftType || shiftImmediate) {
|
||
shiftOp = this.barrelShiftImmediate(shiftType, shiftImmediate, rm);
|
||
address = this.armCompiler.constructAddressingMode2RegisterShifted(instruction, shiftOp, condOp);
|
||
} else {
|
||
address = this.armCompiler.constructAddressingMode23Register(instruction, rm, condOp);
|
||
}
|
||
} else {
|
||
// Immediate
|
||
var offset = instruction & 0x00000FFF;
|
||
address = this.armCompiler.constructAddressingMode23Immediate(instruction, offset, condOp);
|
||
}
|
||
if (load) {
|
||
if (b) {
|
||
// LDRB
|
||
op = this.armCompiler.constructLDRB(rd, address, condOp);
|
||
} else {
|
||
// LDR
|
||
op = this.armCompiler.constructLDR(rd, address, condOp);
|
||
}
|
||
} else {
|
||
if (b) {
|
||
// STRB
|
||
op = this.armCompiler.constructSTRB(rd, address, condOp);
|
||
} else {
|
||
// STR
|
||
op = this.armCompiler.constructSTR(rd, address, condOp);
|
||
}
|
||
}
|
||
op.writesPC = load && (rd == ARMRegs.PC || address.writesPC); // SEH
|
||
break;
|
||
case 0x08000000:
|
||
// Block data transfer
|
||
var load = instruction & 0x00100000;
|
||
var w = instruction & 0x00200000;
|
||
var user = instruction & 0x00400000;
|
||
var u = instruction & 0x00800000;
|
||
var p = instruction & 0x01000000;
|
||
var rs = instruction & 0x0000FFFF;
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
|
||
var address : AddressFunction;
|
||
var immediate = 0;
|
||
var offset = 0;
|
||
var overlap = false;
|
||
if (u) {
|
||
if (p) {
|
||
immediate = 4;
|
||
}
|
||
for (var m = 0x01, i = 0; i < 16; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
if (w && i == rn && !offset) {
|
||
rs &= ~m;
|
||
immediate += 4;
|
||
overlap = true;
|
||
}
|
||
offset += 4;
|
||
}
|
||
}
|
||
} else {
|
||
if (!p) {
|
||
immediate = 4;
|
||
}
|
||
for (var m = 0x01, i = 0; i < 16; m <<= 1, ++i) {
|
||
if (rs & m) {
|
||
if (w && i == rn && !offset) {
|
||
rs &= ~m;
|
||
immediate += 4;
|
||
overlap = true;
|
||
}
|
||
immediate -= 4;
|
||
offset -= 4;
|
||
}
|
||
}
|
||
}
|
||
if (w) {
|
||
address = this.armCompiler.constructAddressingMode4Writeback(immediate, offset, rn, overlap);
|
||
} else {
|
||
address = this.armCompiler.constructAddressingMode4(immediate, rn);
|
||
}
|
||
if (load) {
|
||
// LDM
|
||
if (user) {
|
||
op = this.armCompiler.constructLDMS(rs, address, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructLDM(rs, address, condOp);
|
||
}
|
||
op.writesPC = !!(rs & (1 << 15));
|
||
} else {
|
||
// STM
|
||
if (user) {
|
||
op = this.armCompiler.constructSTMS(rs, address, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructSTM(rs, address, condOp);
|
||
}
|
||
op.writesPC = false;
|
||
}
|
||
break;
|
||
case 0x0A000000:
|
||
// Branch
|
||
var immediate = instruction & 0x00FFFFFF;
|
||
if (immediate & 0x00800000) {
|
||
immediate |= 0xFF000000;
|
||
}
|
||
immediate <<= 2;
|
||
var link = instruction & 0x01000000;
|
||
if (link) {
|
||
op = this.armCompiler.constructBL(immediate, condOp);
|
||
} else {
|
||
op = this.armCompiler.constructB(immediate, condOp);
|
||
}
|
||
op.writesPC = true;
|
||
op.fixedJump = true;
|
||
break;
|
||
case 0x0C000000:
|
||
// Coprocessor data transfer
|
||
var load = instruction & 0x00100000;
|
||
var w = instruction & 0x00200000;
|
||
var user = instruction & 0x00400000;
|
||
var u = instruction & 0x00800000;
|
||
var p = instruction & 0x01000000;
|
||
var rn = (instruction & 0x000F0000) >> 16;
|
||
var crd = (instruction & 0x0000F000) >> 12;
|
||
var cpnum = (instruction & 0x00000F00) >> 8;
|
||
var immediate = instruction & 0x000000FF;
|
||
var cond = (instruction >> 28) & 0xf;
|
||
var condOp = this.conds[cond];
|
||
|
||
// VPUSH, VPOP
|
||
if ((instruction & 0x0fbf0f00) == 0x0d2d0a00) {
|
||
op = this.armCompiler.constructVPUSH(condOp, (crd<<1)|(user?1:0), immediate, true);
|
||
}
|
||
else if ((instruction & 0x0fbf0f00) == 0x0d2d0b00) {
|
||
op = this.armCompiler.constructVPUSH(condOp, ((user?16:0)|crd)*2, immediate, false);
|
||
}
|
||
else if ((instruction & 0x0fbf0f00) == 0x0cbd0a00) {
|
||
op = this.armCompiler.constructVPOP(condOp, (crd<<1)|(user?1:0), immediate, true);
|
||
}
|
||
else if ((instruction & 0x0fbf0f00) == 0x0cbd0b00) {
|
||
op = this.armCompiler.constructVPOP(condOp, ((user?16:0)|crd)*2, immediate, false);
|
||
}
|
||
// VLDR, VSTR
|
||
// https://developer.arm.com/documentation/ddi0406/c/Application-Level-Architecture/Instruction-Details/Alphabetical-list-of-instructions/VSTR?lang=en
|
||
else if ((instruction & 0x0f200f00) == 0x0d000a00) {
|
||
immediate *= 4;
|
||
if (!u) immediate = -immediate;
|
||
var overlap = false;
|
||
var d = (crd<<1)|(user?1:0);
|
||
|
||
var address : AddressFunction;
|
||
if (w) {
|
||
address = this.armCompiler.constructAddressingMode4Writeback(immediate, offset, rn, overlap);
|
||
} else {
|
||
address = this.armCompiler.constructAddressingMode4(immediate, rn);
|
||
}
|
||
if (load) {
|
||
op = this.armCompiler.constructVLDR(condOp, d, address, true);
|
||
} else {
|
||
op = this.armCompiler.constructVSTR(condOp, d, address, true);
|
||
}
|
||
} else if ((instruction & 0x0f200f00) == 0x0d000b00) {
|
||
immediate *= 4;
|
||
if (!u) immediate = -immediate;
|
||
var overlap = false;
|
||
var d = ((user?16:0)|crd)*2;
|
||
|
||
var address : AddressFunction;
|
||
if (w) {
|
||
address = this.armCompiler.constructAddressingMode4Writeback(immediate, offset, rn, overlap);
|
||
} else {
|
||
address = this.armCompiler.constructAddressingMode4(immediate, rn);
|
||
}
|
||
if (load) {
|
||
op = this.armCompiler.constructVLDR(condOp, d, address, false);
|
||
} else {
|
||
op = this.armCompiler.constructVSTR(condOp, d, address, false);
|
||
}
|
||
}
|
||
break;
|
||
case 0x0E000000:
|
||
// Coprocessor data operation/SWI
|
||
if ((instruction & 0x0F000000) == 0x0F000000) {
|
||
// SWI
|
||
var immediate = (instruction & 0x00FFFFFF);
|
||
op = this.armCompiler.constructSWI(immediate, condOp);
|
||
op.writesPC = false;
|
||
}
|
||
// VCVT, VCVTR, VCVT
|
||
// https://developer.arm.com/documentation/ddi0406/c/Application-Level-Architecture/Instruction-Details/Alphabetical-list-of-instructions/VCVT--VCVTR--between-floating-point-and-integer--Floating-point-
|
||
/*
|
||
if opc2 != '000' && !(opc2 IN "10x") then SEE "Related encodings";
|
||
to_integer = (opc2<2> == '1'); dp_operation = (sz == 1);
|
||
if to_integer then
|
||
unsigned = (opc2<0> == '0'); round_zero = (op == '1');
|
||
d = UInt(Vd:D); m = if dp_operation then UInt(M:Vm) else UInt(Vm:M);
|
||
else
|
||
unsigned = (op == '0'); round_nearest = FALSE; // FALSE selects FPSCR rounding
|
||
m = UInt(Vm:M); d = if dp_operation then UInt(D:Vd) else UInt(Vd:D);
|
||
*/
|
||
else if ((instruction & 0x0FB80E50) == 0x0EB80A40) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const opc2 = (instruction >> 16) & 0x7;
|
||
const Vd = (instruction >> 12) & 0xf;
|
||
const sz = (instruction >> 8) & 0x1;
|
||
const op0 = (instruction >> 7) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const Vm = instruction & 0xf;
|
||
const to_integer = opc2 & 0x4;
|
||
const dp_operation = sz != 0;
|
||
const unsigned = to_integer ? opc2 & 0x1 : 0;
|
||
const round_zero = op0 != 0;
|
||
const round_nearest = false;
|
||
const d = sz ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = sz ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
//console.log("VCVT", d, m, opc2, to_integer, dp_operation, unsigned, round_zero, round_nearest);
|
||
op = this.armCompiler.constructVCVT(condOp, d, m, to_integer, dp_operation, unsigned, round_zero, round_nearest);
|
||
op.writesPC = false;
|
||
}
|
||
// VCVT f64/f32
|
||
else if ((instruction & 0x0FBF0ED0) == 0x0EB70AC0) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const Vd = (instruction >> 12) & 0xf;
|
||
const sz = (instruction >> 8) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const Vm = instruction & 0xf;
|
||
const double_to_single = sz != 0;
|
||
const d = sz ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = sz ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
op = this.armCompiler.constructVCVTF(condOp, d, m, double_to_single);
|
||
op.writesPC = false;
|
||
}
|
||
// 3-op floating point vector instructions (VADD, etc)
|
||
else if ((instruction & 0x0FA00E10) == 0x0E200A00) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const N = (instruction >> 7) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const opcode = (instruction & 0x0F00000) >> 20;
|
||
const Vn = (instruction & 0x000F0000) >> 16;
|
||
const Vd = (instruction & 0x0000F000) >> 12;
|
||
const opcode2 = (instruction & 0b11100000) >> 5;
|
||
const Vm = instruction & 0x0000000F;
|
||
const sz = (instruction >> 8) & 0x1;
|
||
const d = sz ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = sz ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
const n = sz ? (N?16:0)|Vn : (Vn<<1)|(N?1:0);
|
||
|
||
var condOp = this.conds[cond];
|
||
op = this.armCompiler.constructVFP3Register(condOp, opcode, n, d, sz, opcode2, m);
|
||
op.writesPC = false;
|
||
}
|
||
// VDIV - https://developer.arm.com/documentation/ddi0597/2023-12/SIMD-FP-Instructions/VDIV--Divide-?lang=en
|
||
else if ((instruction & 0x0FB00C50) == 0x0E800800) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const Vn = (instruction >> 16) & 0xf;
|
||
const Vd = (instruction >> 12) & 0xf;
|
||
const size = (instruction >> 8) & 0x3;
|
||
const N = (instruction >> 7) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const Vm = instruction & 0xf;
|
||
/*
|
||
case size of
|
||
when '01' esize = 16; d = UInt(Vd:D); n = UInt(Vn:N); m = UInt(Vm:M);
|
||
when '10' esize = 32; d = UInt(Vd:D); n = UInt(Vn:N); m = UInt(Vm:M);
|
||
when '11' esize = 64; d = UInt(D:Vd); n = UInt(N:Vn); m = UInt(M:Vm);
|
||
*/
|
||
const d = size==3 ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = size==3 ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
const n = size==3 ? (N?16:0)|Vn : (Vn<<1)|(N?1:0);
|
||
op = this.armCompiler.constructVFP3Register(condOp, 8, n, d, size==3, 0, m);
|
||
op.writesPC = false;
|
||
}
|
||
// 2-op floating point vector instructions (VCMP, etc)
|
||
else if ((instruction & 0x0FBF0E50) == 0x0EB40A40) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const Vd = (instruction >> 12) & 0xf;
|
||
const sz = (instruction >> 8) & 0x1;
|
||
const E = (instruction >> 7) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const Vm = instruction & 0x0000000F;
|
||
const d = sz ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = sz ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
|
||
var condOp = this.conds[cond];
|
||
op = this.armCompiler.constructVCMP(condOp, d, Vd, sz, E, m, Vm);
|
||
op.writesPC = false;
|
||
}
|
||
// VCMP #0
|
||
else if ((instruction & 0x0FBF0EFF) == 0x0EB50A40) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const D = (instruction >> 22) & 0x1;
|
||
const Vd = (instruction >> 12) & 0xf;
|
||
const sz = (instruction >> 8) & 0x1;
|
||
const E = (instruction >> 7) & 0x1;
|
||
const M = (instruction >> 5) & 0x1;
|
||
const Vm = instruction & 0x0000000F;
|
||
const d = sz ? (D?16:0)|Vd : (Vd<<1)|(D?1:0);
|
||
const m = sz ? (M?16:0)|Vm : (Vm<<1)|(M?1:0);
|
||
|
||
var condOp = this.conds[cond];
|
||
op = this.armCompiler.constructVCMP0(condOp, d, Vd, sz, E, m, Vm);
|
||
op.writesPC = false;
|
||
}
|
||
// vmrs apsr_nzcv, fpscr (ignore, we always call this after CMP)
|
||
else if (instruction == 0xeef1fa10) {
|
||
op = this.armCompiler.constructNOP();
|
||
}
|
||
// VMOV - https://developer.arm.com/documentation/ddi0406/c/Application-Level-Architecture/Instruction-Details/Alphabetical-list-of-instructions/VMOV--between-ARM-core-register-and-single-precision-register-
|
||
else if ((instruction & 0x0FE00F10) == 0x0E000A10) {
|
||
const cond = (instruction >> 28) & 0xf;
|
||
const opc1 = (instruction >> 20) & 0x1;
|
||
const Vn = (instruction >> 16) & 0xf;
|
||
const Rt = (instruction >> 12) & 0xf;
|
||
const N = (instruction >> 7) & 0x1;
|
||
var condOp = this.conds[cond];
|
||
//console.log("VMOV", instruction.toString(16), opc1, Vn, Rt, N);
|
||
op = this.armCompiler.constructVMOV(condOp, opc1, (Vn<<1)|(N?1:0), Rt);
|
||
}
|
||
// vmov.32 dn[i], rn
|
||
else if (instruction == 0xee000b10) {
|
||
op = this.armCompiler.constructVMOV(condOp, false, 0, 0);
|
||
}
|
||
else if (instruction == 0xee201b10) {
|
||
op = this.armCompiler.constructVMOV(condOp, false, 1, 1);
|
||
}
|
||
break;
|
||
default:
|
||
throw new EmuHalt('Bad opcode: 0x' + instruction.toString(16));
|
||
}
|
||
}
|
||
|
||
op.execMode = ARMMode.MODE_ARM;
|
||
op.fixedJump = op.fixedJump || false;
|
||
return op;
|
||
};
|
||
|
||
ARMCore.prototype.compileThumb = function(instruction) {
|
||
var op = this.badOp(instruction & 0xFFFF);
|
||
var cpu = this;
|
||
var gprs = this.gprs;
|
||
if ((instruction & 0xFC00) == 0x4000) {
|
||
// Data-processing register
|
||
var rm = (instruction & 0x0038) >> 3;
|
||
var rd = instruction & 0x0007;
|
||
switch (instruction & 0x03C0) {
|
||
case 0x0000:
|
||
// AND
|
||
op = this.thumbCompiler.constructAND(rd, rm);
|
||
break;
|
||
case 0x0040:
|
||
// EOR
|
||
op = this.thumbCompiler.constructEOR(rd, rm);
|
||
break;
|
||
case 0x0080:
|
||
// LSL(2)
|
||
op = this.thumbCompiler.constructLSL2(rd, rm);
|
||
break;
|
||
case 0x00C0:
|
||
// LSR(2)
|
||
op = this.thumbCompiler.constructLSR2(rd, rm);
|
||
break;
|
||
case 0x0100:
|
||
// ASR(2)
|
||
op = this.thumbCompiler.constructASR2(rd, rm);
|
||
break;
|
||
case 0x0140:
|
||
// ADC
|
||
op = this.thumbCompiler.constructADC(rd, rm);
|
||
break;
|
||
case 0x0180:
|
||
// SBC
|
||
op = this.thumbCompiler.constructSBC(rd, rm);
|
||
break;
|
||
case 0x01C0:
|
||
// ROR
|
||
op = this.thumbCompiler.constructROR(rd, rm);
|
||
break;
|
||
case 0x0200:
|
||
// TST
|
||
op = this.thumbCompiler.constructTST(rd, rm);
|
||
break;
|
||
case 0x0240:
|
||
// NEG
|
||
op = this.thumbCompiler.constructNEG(rd, rm);
|
||
break;
|
||
case 0x0280:
|
||
// CMP(2)
|
||
op = this.thumbCompiler.constructCMP2(rd, rm);
|
||
break;
|
||
case 0x02C0:
|
||
// CMN
|
||
op = this.thumbCompiler.constructCMN(rd, rm);
|
||
break;
|
||
case 0x0300:
|
||
// ORR
|
||
op = this.thumbCompiler.constructORR(rd, rm);
|
||
break;
|
||
case 0x0340:
|
||
// MUL
|
||
op = this.thumbCompiler.constructMUL(rd, rm);
|
||
break;
|
||
case 0x0380:
|
||
// BIC
|
||
op = this.thumbCompiler.constructBIC(rd, rm);
|
||
break;
|
||
case 0x03C0:
|
||
// MVN
|
||
op = this.thumbCompiler.constructMVN(rd, rm);
|
||
break;
|
||
}
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xFC00) == 0x4400) {
|
||
// Special data processing / branch/exchange instruction set
|
||
var rm = (instruction & 0x0078) >> 3;
|
||
var rn = instruction & 0x0007;
|
||
var h1 = instruction & 0x0080;
|
||
var rd = rn | (h1 >> 4);
|
||
switch (instruction & 0x0300) {
|
||
case 0x0000:
|
||
// ADD(4)
|
||
op = this.thumbCompiler.constructADD4(rd, rm)
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
break;
|
||
case 0x0100:
|
||
// CMP(3)
|
||
op = this.thumbCompiler.constructCMP3(rd, rm);
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x0200:
|
||
// MOV(3)
|
||
op = this.thumbCompiler.constructMOV3(rd, rm);
|
||
op.writesPC = rd == ARMRegs.PC;
|
||
break;
|
||
case 0x0300:
|
||
// BX
|
||
op = this.thumbCompiler.constructBX(rd, rm);
|
||
op.writesPC = true;
|
||
op.fixedJump = false;
|
||
break;
|
||
}
|
||
} else if ((instruction & 0xF800) == 0x1800) {
|
||
// Add/subtract
|
||
var rm = (instruction & 0x01C0) >> 6;
|
||
var rn = (instruction & 0x0038) >> 3;
|
||
var rd = instruction & 0x0007;
|
||
switch (instruction & 0x0600) {
|
||
case 0x0000:
|
||
// ADD(3)
|
||
op = this.thumbCompiler.constructADD3(rd, rn, rm);
|
||
break;
|
||
case 0x0200:
|
||
// SUB(3)
|
||
op = this.thumbCompiler.constructSUB3(rd, rn, rm);
|
||
break;
|
||
case 0x0400:
|
||
var immediate = (instruction & 0x01C0) >> 6;
|
||
if (immediate) {
|
||
// ADD(1)
|
||
op = this.thumbCompiler.constructADD1(rd, rn, immediate);
|
||
} else {
|
||
// MOV(2)
|
||
op = this.thumbCompiler.constructMOV2(rd, rn, rm);
|
||
}
|
||
break;
|
||
case 0x0600:
|
||
// SUB(1)
|
||
var immediate = (instruction & 0x01C0) >> 6;
|
||
op = this.thumbCompiler.constructSUB1(rd, rn, immediate);
|
||
break;
|
||
}
|
||
op.writesPC = false;
|
||
} else if (!(instruction & 0xE000)) {
|
||
// Shift by immediate
|
||
var rd = instruction & 0x0007;
|
||
var rm = (instruction & 0x0038) >> 3;
|
||
var immediate = (instruction & 0x07C0) >> 6;
|
||
switch (instruction & 0x1800) {
|
||
case 0x0000:
|
||
// LSL(1)
|
||
op = this.thumbCompiler.constructLSL1(rd, rm, immediate);
|
||
break;
|
||
case 0x0800:
|
||
// LSR(1)
|
||
op = this.thumbCompiler.constructLSR1(rd, rm, immediate);
|
||
break;
|
||
case 0x1000:
|
||
// ASR(1)
|
||
op = this.thumbCompiler.constructASR1(rd, rm, immediate);
|
||
break;
|
||
case 0x1800:
|
||
break;
|
||
}
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xE000) == 0x2000) {
|
||
// Add/subtract/compare/move immediate
|
||
var immediate = instruction & 0x00FF;
|
||
var rn = (instruction & 0x0700) >> 8;
|
||
switch (instruction & 0x1800) {
|
||
case 0x0000:
|
||
// MOV(1)
|
||
op = this.thumbCompiler.constructMOV1(rn, immediate);
|
||
break;
|
||
case 0x0800:
|
||
// CMP(1)
|
||
op = this.thumbCompiler.constructCMP1(rn, immediate);
|
||
break;
|
||
case 0x1000:
|
||
// ADD(2)
|
||
op = this.thumbCompiler.constructADD2(rn, immediate);
|
||
break;
|
||
case 0x1800:
|
||
// SUB(2)
|
||
op = this.thumbCompiler.constructSUB2(rn, immediate);
|
||
break;
|
||
}
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xF800) == 0x4800) {
|
||
// LDR(3)
|
||
var rd = (instruction & 0x0700) >> 8;
|
||
var immediate = (instruction & 0x00FF) << 2;
|
||
op = this.thumbCompiler.constructLDR3(rd, immediate);
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xF000) == 0x5000) {
|
||
// Load and store with relative offset
|
||
var rd = instruction & 0x0007;
|
||
var rn = (instruction & 0x0038) >> 3;
|
||
var rm = (instruction & 0x01C0) >> 6;
|
||
var opcode = instruction & 0x0E00;
|
||
switch (opcode) {
|
||
case 0x0000:
|
||
// STR(2)
|
||
op = this.thumbCompiler.constructSTR2(rd, rn, rm);
|
||
break;
|
||
case 0x0200:
|
||
// STRH(2)
|
||
op = this.thumbCompiler.constructSTRH2(rd, rn, rm);
|
||
break;
|
||
case 0x0400:
|
||
// STRB(2)
|
||
op = this.thumbCompiler.constructSTRB2(rd, rn, rm);
|
||
break;
|
||
case 0x0600:
|
||
// LDRSB
|
||
op = this.thumbCompiler.constructLDRSB(rd, rn, rm);
|
||
break;
|
||
case 0x0800:
|
||
// LDR(2)
|
||
op = this.thumbCompiler.constructLDR2(rd, rn, rm);
|
||
break;
|
||
case 0x0A00:
|
||
// LDRH(2)
|
||
op = this.thumbCompiler.constructLDRH2(rd, rn, rm);
|
||
break;
|
||
case 0x0C00:
|
||
// LDRB(2)
|
||
op = this.thumbCompiler.constructLDRB2(rd, rn, rm);
|
||
break;
|
||
case 0x0E00:
|
||
// LDRSH
|
||
op = this.thumbCompiler.constructLDRSH(rd, rn, rm);
|
||
break;
|
||
}
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xE000) == 0x6000) {
|
||
// Load and store with immediate offset
|
||
var rd = instruction & 0x0007;
|
||
var rn = (instruction & 0x0038) >> 3;
|
||
var immediate = (instruction & 0x07C0) >> 4;
|
||
var b = instruction & 0x1000;
|
||
if (b) {
|
||
immediate >>= 2;
|
||
}
|
||
var load = instruction & 0x0800;
|
||
if (load) {
|
||
if (b) {
|
||
// LDRB(1)
|
||
op = this.thumbCompiler.constructLDRB1(rd, rn, immediate);
|
||
} else {
|
||
// LDR(1)
|
||
op = this.thumbCompiler.constructLDR1(rd, rn, immediate);
|
||
}
|
||
} else {
|
||
if (b) {
|
||
// STRB(1)
|
||
op = this.thumbCompiler.constructSTRB1(rd, rn, immediate);
|
||
} else {
|
||
// STR(1)
|
||
op = this.thumbCompiler.constructSTR1(rd, rn, immediate);
|
||
}
|
||
}
|
||
op.writesPC = false;
|
||
} else if ((instruction & 0xF600) == 0xB400) {
|
||
// Push and pop registers
|
||
var r = !!(instruction & 0x0100);
|
||
var rs = instruction & 0x00FF;
|
||
if (instruction & 0x0800) {
|
||
// POP
|
||
op = this.thumbCompiler.constructPOP(rs, r);
|
||
op.writesPC = r;
|
||
op.fixedJump = false;
|
||
} else {
|
||
// PUSH
|
||
op = this.thumbCompiler.constructPUSH(rs, r);
|
||
op.writesPC = false;
|
||
}
|
||
} else if (instruction & 0x8000) {
|
||
switch (instruction & 0x7000) {
|
||
case 0x0000:
|
||
// Load and store halfword
|
||
var rd = instruction & 0x0007;
|
||
var rn = (instruction & 0x0038) >> 3;
|
||
var immediate = (instruction & 0x07C0) >> 5;
|
||
if (instruction & 0x0800) {
|
||
// LDRH(1)
|
||
op = this.thumbCompiler.constructLDRH1(rd, rn, immediate);
|
||
} else {
|
||
// STRH(1)
|
||
op = this.thumbCompiler.constructSTRH1(rd, rn, immediate);
|
||
}
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x1000:
|
||
// SP-relative load and store
|
||
var rd = (instruction & 0x0700) >> 8;
|
||
var immediate = (instruction & 0x00FF) << 2;
|
||
var load = instruction & 0x0800;
|
||
if (load) {
|
||
// LDR(4)
|
||
op = this.thumbCompiler.constructLDR4(rd, immediate);
|
||
} else {
|
||
// STR(3)
|
||
op = this.thumbCompiler.constructSTR3(rd, immediate);
|
||
}
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x2000:
|
||
// Load address
|
||
var rd = (instruction & 0x0700) >> 8;
|
||
var immediate = (instruction & 0x00FF) << 2;
|
||
if (instruction & 0x0800) {
|
||
// ADD(6)
|
||
op = this.thumbCompiler.constructADD6(rd, immediate);
|
||
} else {
|
||
// ADD(5)
|
||
op = this.thumbCompiler.constructADD5(rd, immediate);
|
||
}
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x3000:
|
||
// Miscellaneous
|
||
if (!(instruction & 0x0F00)) {
|
||
// Adjust stack pointer
|
||
// ADD(7)/SUB(4)
|
||
var b = instruction & 0x0080;
|
||
var immediate = (instruction & 0x7F) << 2;
|
||
if (b) {
|
||
immediate = -immediate;
|
||
}
|
||
op = this.thumbCompiler.constructADD7(immediate)
|
||
op.writesPC = false;
|
||
}
|
||
break;
|
||
case 0x4000:
|
||
// Multiple load and store
|
||
var rn = (instruction & 0x0700) >> 8;
|
||
var rs = instruction & 0x00FF;
|
||
if (instruction & 0x0800) {
|
||
// LDMIA
|
||
op = this.thumbCompiler.constructLDMIA(rn, rs);
|
||
} else {
|
||
// STMIA
|
||
op = this.thumbCompiler.constructSTMIA(rn, rs);
|
||
}
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x5000:
|
||
// Conditional branch
|
||
var cond = (instruction & 0x0F00) >> 8;
|
||
var immediate = (instruction & 0x00FF);
|
||
if (cond == 0xF) {
|
||
// SWI
|
||
op = this.thumbCompiler.constructSWI(immediate);
|
||
op.writesPC = false;
|
||
} else {
|
||
// B(1)
|
||
if (instruction & 0x0080) {
|
||
immediate |= 0xFFFFFF00;
|
||
}
|
||
immediate <<= 1;
|
||
var condOp = this.conds[cond];
|
||
op = this.thumbCompiler.constructB1(immediate, condOp);
|
||
op.writesPC = true;
|
||
op.fixedJump = true;
|
||
}
|
||
break;
|
||
case 0x6000:
|
||
case 0x7000:
|
||
// BL(X)
|
||
var immediate = instruction & 0x07FF;
|
||
var h = instruction & 0x1800;
|
||
switch (h) {
|
||
case 0x0000:
|
||
// B(2)
|
||
if (immediate & 0x0400) {
|
||
immediate |= 0xFFFFF800;
|
||
}
|
||
immediate <<= 1;
|
||
op = this.thumbCompiler.constructB2(immediate);
|
||
op.writesPC = true;
|
||
op.fixedJump = true;
|
||
break;
|
||
case 0x0800:
|
||
// BLX (ARMv5T)
|
||
/*op = function() {
|
||
var pc = gprs[ARMRegs.PC];
|
||
gprs[ARMRegs.PC] = (gprs[ARMRegs.LR] + (immediate << 1)) & 0xFFFFFFFC;
|
||
gprs[ARMRegs.LR] = pc - 1;
|
||
cpu.switchExecMode(cpu.MODE_ARM);
|
||
}*/
|
||
break;
|
||
case 0x1000:
|
||
// BL(1)
|
||
if (immediate & 0x0400) {
|
||
immediate |= 0xFFFFFC00;
|
||
}
|
||
immediate <<= 12;
|
||
op = this.thumbCompiler.constructBL1(immediate);
|
||
op.writesPC = false;
|
||
break;
|
||
case 0x1800:
|
||
// BL(2)
|
||
op = this.thumbCompiler.constructBL2(immediate);
|
||
op.writesPC = true;
|
||
op.fixedJump = false;
|
||
break;
|
||
}
|
||
break;
|
||
default:
|
||
throw new EmuHalt("Undefined instruction: 0x" + instruction.toString(16));
|
||
}
|
||
} else {
|
||
throw new EmuHalt('Bad opcode: 0x' + instruction.toString(16));
|
||
}
|
||
|
||
op.execMode = ARMMode.MODE_THUMB;
|
||
op.fixedJump = op.fixedJump || false;
|
||
//console.log(hex(instruction), op);
|
||
return op;
|
||
};
|
||
|
||
///////////////////////////////////////////////////////////////////////////
|
||
|
||
type ARMBus = Bus & Bus32;
|
||
|
||
export class ARM32CPU implements CPU, InstructionBased, ARMMMUInterface, ARMIRQInterface, SavesState<ARMCoreState> {
|
||
|
||
core : ARMCoreType;
|
||
bus : ARMBus;
|
||
memory : ARMMemoryRegion[];
|
||
f64arr = new Float64Array(1);
|
||
f32arr = new Float32Array(this.f64arr.buffer);
|
||
i32arr = new Int32Array(this.f64arr.buffer);
|
||
|
||
BASE_OFFSET = 24;
|
||
OFFSET_MASK = 0x00FFFFFF;
|
||
|
||
constructor() {
|
||
this.core = new ARMCore();
|
||
this.core.irq = this;
|
||
this.core.mmu = this;
|
||
this.resetMemory();
|
||
}
|
||
resetMemory() {
|
||
this.memory = []; // TODO
|
||
for (var i=0; i<256; i++) {
|
||
// TODO: constant
|
||
const bits = 10;
|
||
this.memory[i] = {
|
||
PAGE_MASK: (2 << bits) - 1,
|
||
ICACHE_PAGE_BITS: bits,
|
||
icache: new Array() // size >> (bits + 1))
|
||
}; // TODO?
|
||
}
|
||
}
|
||
advanceInsn() : number {
|
||
var n = this.core.cycles;
|
||
this.core.step();
|
||
n -= this.core.cycles;
|
||
return n > 0 ? n : 1;
|
||
}
|
||
getPC(): number {
|
||
return this.core.gprs[15] - this.core.instructionWidth;
|
||
}
|
||
getSP(): number {
|
||
return this.core.gprs[13];
|
||
}
|
||
isStable(): boolean {
|
||
return true; // TODO?
|
||
}
|
||
connectMemoryBus(bus: ARMBus): void {
|
||
this.bus = bus;
|
||
}
|
||
reset(): void {
|
||
this.resetMemory();
|
||
const resetVector = this.load32(0);
|
||
this.core.resetCPU(resetVector);
|
||
}
|
||
saveState() : ARMCoreState {
|
||
return this.core.freeze();
|
||
}
|
||
loadState(state: ARMCoreState): void {
|
||
this.core.defrost(state);
|
||
}
|
||
|
||
load8(a: number): number {
|
||
return (this.bus.read(a) << 24) >> 24;
|
||
}
|
||
loadU8(a: number): number {
|
||
return this.bus.read(a) & 0xff;
|
||
}
|
||
load16(a: number): number {
|
||
return (this.loadU16(a) << 16) >> 16;
|
||
}
|
||
loadU16(a: number): number {
|
||
return this.bus.read(a) | (this.bus.read(a+1) << 8);
|
||
}
|
||
load32(a: number): number {
|
||
var v = this.bus.read32(a);
|
||
return v;
|
||
}
|
||
// TODO: memory.invalidatePage(maskedOffset);
|
||
store8(a: number, v: number): void {
|
||
this.bus.write(a, v & 0xff);
|
||
}
|
||
store16(a: number, v: number): void {
|
||
this.bus.write(a, v & 0xff);
|
||
this.bus.write(a+1, (v >> 8) & 0xff);
|
||
}
|
||
store32(a: number, v: number): void {
|
||
this.bus.write32(a, v);
|
||
}
|
||
// TODO
|
||
wait(a: number): void {
|
||
++this.core.cycles;
|
||
}
|
||
wait32(a: number): void {
|
||
++this.core.cycles;
|
||
}
|
||
waitSeq32(a: number): void {
|
||
++this.core.cycles;
|
||
}
|
||
waitMul(rs: number): void {
|
||
if (((rs & 0xFFFFFF00) == 0xFFFFFF00) || !(rs & 0xFFFFFF00)) {
|
||
this.core.cycles += 1;
|
||
} else if (((rs & 0xFFFF0000) == 0xFFFF0000) || !(rs & 0xFFFF0000)) {
|
||
this.core.cycles += 2;
|
||
} else if (((rs & 0xFF000000) == 0xFF000000) || !(rs & 0xFF000000)) {
|
||
this.core.cycles += 3;
|
||
} else {
|
||
this.core.cycles += 4;
|
||
}
|
||
}
|
||
waitMulti32(a: number, total: number): void {
|
||
this.core.cycles += 2;
|
||
}
|
||
waitPrefetch(a: number): void {
|
||
++this.core.cycles;
|
||
}
|
||
waitPrefetch32(a: number): void {
|
||
++this.core.cycles;
|
||
}
|
||
addressToPage(region: number, address: number) : number {
|
||
return address >> this.memory[region].ICACHE_PAGE_BITS;
|
||
}
|
||
accessPage(region: number, pageId: number): ARMMemoryPage {
|
||
var memory = this.memory[region];
|
||
var page = memory.icache[pageId];
|
||
if (!page || page.invalid) {
|
||
page = {
|
||
thumb: new Array(1 << (memory.ICACHE_PAGE_BITS)),
|
||
arm: new Array(1 << memory.ICACHE_PAGE_BITS - 1),
|
||
invalid: false
|
||
}
|
||
memory.icache[pageId] = page;
|
||
}
|
||
return page;
|
||
}
|
||
|
||
swi(opcode: number): void {
|
||
this.core.raiseTrap();
|
||
}
|
||
swi32(opcode: number): void {
|
||
this.swi(opcode >> 16);
|
||
}
|
||
clear() : void {
|
||
}
|
||
updateTimers() : void {
|
||
}
|
||
testIRQ() : void {
|
||
}
|
||
|
||
isThumb() : boolean {
|
||
return this.core.instructionWidth == 2;
|
||
}
|
||
getDebugTree() {
|
||
return {
|
||
state: this.saveState(),
|
||
mmu: this.core.mmu
|
||
};
|
||
}
|
||
}
|