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Don't create new arrays in reset(), set to 0 instead

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copy 2017-04-05 21:03:32 -05:00
parent 004f620252
commit e5fcc32385
1 changed files with 21 additions and 17 deletions
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38
src/cpu.js
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@ -20,14 +20,16 @@ function CPU()
// that we support)
this.a20_enabled = true;
this.mem_page_infos = undefined;
this.mem8 = new Uint8Array(0);
this.mem16 = new Uint16Array(this.mem8.buffer);
this.mem32s = new Int32Array(this.mem8.buffer);
this.segment_is_null = [];
this.segment_offsets = [];
this.segment_limits = [];
//this.segment_infos = [];
this.segment_is_null = new Uint8Array(8);
this.segment_limits = new Uint32Array(8);
//this.segment_infos = new Uint32Array(8);
this.segment_offsets = new Int32Array(8);
/**
* Translation Lookaside Buffer
@ -185,7 +187,6 @@ function CPU()
/** @type {boolean} */
this.paging = false;
/** @type {number} */
this.instruction_pointer = 0;
@ -468,21 +469,24 @@ CPU.prototype.reset = function()
{
this.a20_enabled = true;
this.segment_is_null = new Uint8Array(8);
this.segment_limits = new Uint32Array(8);
//this.segment_infos = new Uint32Array(8);
this.segment_offsets = new Int32Array(8);
for(let i = 0; i < 8; i++)
{
this.segment_is_null[i] = 0;
this.segment_limits[i] = 0;
//this.segment_infos = new Uint32Array(8);
this.segment_offsets[i] = 0;
}
this.full_clear_tlb();
this.reg32s = new Int32Array(8);
this.reg32 = new Uint32Array(this.reg32s.buffer);
this.reg16s = new Int16Array(this.reg32s.buffer);
this.reg16 = new Uint16Array(this.reg32s.buffer);
this.reg8s = new Int8Array(this.reg32s.buffer);
this.reg8 = new Uint8Array(this.reg32s.buffer);
this.sreg = new Uint16Array(8);
this.dreg = new Int32Array(8);
for(let i = 0; i < 8; i++)
{
this.reg32s[i] = 0;
this.sreg[i] = 0;
this.cr[i] = 0;
this.dreg[i] = 0;
}
this.protected_mode = false;
// http://www.sandpile.org/x86/initial.htm