Delete some dead code
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Fabian
parent
2233b069b3
commit
01697a7ebb
46
src/cpu.js
46
src/cpu.js
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@ -21,13 +21,11 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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const memory = v86oxide.instance.exports.memory;
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if(false) Object.defineProperty(this, "memory_size", { get: () => { return new Uint32Array(memory.buffer, 812, 1); } });
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this.memory_size = v86util.view(Uint32Array, memory, 812, 1);
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// Note: Currently unused (degrades performance and not required by any OS
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// that we support)
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this.a20_enabled = v86util.view(Int32Array, memory, 552, 1);
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if(false) Object.defineProperty(this, "a20_enabled", { get: () => { return new Int32Array(memory.buffer, 552, 1); } });
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this.a20_enabled[0] = +true;
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this.mem8 = new Uint8Array(0);
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@ -35,24 +33,16 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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this.mem32s = new Int32Array(this.mem8.buffer);
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this.segment_is_null = v86util.view(Uint8Array, memory, 724, 8);
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if(false) Object.defineProperty(this, "segment_is_null", { get: () => { return new Uint8Array(memory.buffer, 724, 8); } });
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this.segment_offsets = v86util.view(Int32Array, memory, 736, 8);
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if(false) Object.defineProperty(this, "segment_offsets", { get: () => { return new Int32Array(memory.buffer, 736, 8); } });
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this.segment_limits = v86util.view(Uint32Array, memory, 768, 8);
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if(false) Object.defineProperty(this, "segment_limits", { get: () => { return new Uint32Array(memory.buffer, 768, 8); } });
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/**
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* Wheter or not in protected mode
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*/
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this.protected_mode = v86util.view(Int32Array, memory, 800, 1);
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if(false) Object.defineProperty(this, "protected_mode", { get: () => { return new Int32Array(memory.buffer, 800, 1); } });
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this.idtr_size = v86util.view(Int32Array, memory, 564, 1);
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this.idtr_offset = v86util.view(Int32Array, memory, 568, 1);
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if(false) Object.defineProperty(this, "idtr_size", { get: () => { return new Int32Array(memory.buffer, 564, 1); } });
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if(false) Object.defineProperty(this, "idtr_offset", { get: () => { return new Int32Array(memory.buffer, 568, 1); } });
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/**
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* global descriptor table register
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@ -60,19 +50,14 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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this.gdtr_size = v86util.view(Int32Array, memory, 572, 1);
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this.gdtr_offset = v86util.view(Int32Array, memory, 576, 1);
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if(false) Object.defineProperty(this, "gdtr_size", { get: () => { return new Int32Array(memory.buffer, 572, 1); } });
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if(false) Object.defineProperty(this, "gdtr_offset", { get: () => { return new Int32Array(memory.buffer, 576, 1); } });
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this.tss_size_32 = v86util.view(Int32Array, memory, 1128, 1);
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/*
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* whether or not a page fault occured
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*/
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this.page_fault = v86util.view(Uint32Array, memory, 540, 8);
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if(false) Object.defineProperty(this, "page_fault", { get: () => { return new Uint32Array(memory.buffer, 540, 8); } });
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this.cr = v86util.view(Int32Array, memory, 580, 8);
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if(false) Object.defineProperty(this, "cr", { get: () => { return new Int32Array(memory.buffer, 580, 8); } });
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/** @type {number} */
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this.cr[0] = 0;
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@ -85,27 +70,21 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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// current privilege level
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this.cpl = v86util.view(Int32Array, memory, 612, 1);
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if(false) Object.defineProperty(this, "cpl", { get: () => { return new Int32Array(memory.buffer, 612, 1); } });
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// current operand/address size
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this.is_32 = v86util.view(Int32Array, memory, 804, 1);
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if(false) Object.defineProperty(this, "is_32", { get: () => { return new Int32Array(memory.buffer, 804, 1); } });
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this.stack_size_32 = v86util.view(Int32Array, memory, 808, 1);
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if(false) Object.defineProperty(this, "stack_size_32", { get: () => { return new Int32Array(memory.buffer, 808, 1); } });
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/**
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* Was the last instruction a hlt?
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*/
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this.in_hlt = v86util.view(Uint8Array, memory, 616, 1);
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if(false) Object.defineProperty(this, "in_hlt", { get: () => { return new Uint8Array(memory.buffer, 616, 1); } });
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this.last_virt_eip = v86util.view(Int32Array, memory, 620, 1);
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this.eip_phys = v86util.view(Int32Array, memory, 624, 1);
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this.last_virt_esp = v86util.view(Int32Array, memory, 628, 1);
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this.esp_phys = v86util.view(Int32Array, memory, 632, 1);
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@ -116,33 +95,24 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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this.sysenter_eip = v86util.view(Int32Array, memory, 644, 1);
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this.prefixes = v86util.view(Int32Array, memory, 648, 1);
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if(false) Object.defineProperty(this, "prefixes", { get: () => { return new Int32Array(memory.buffer, 648, 1); } });
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this.flags = v86util.view(Int32Array, memory, 536, 1);
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if(false) Object.defineProperty(this, "flags", { get: () => { return new Int32Array(memory.buffer, 536, 1); } });
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/**
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* bitmap of flags which are not updated in the flags variable
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* changed by arithmetic instructions, so only relevant to arithmetic flags
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*/
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this.flags_changed = v86util.view(Int32Array, memory, 532, 1);
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if(false) Object.defineProperty(this, "flags_changed", { get: () => { return new Int32Array(memory.buffer, 532, 1); } });
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/**
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* the last 2 operators and the result and size of the last arithmetic operation
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*/
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this.last_op1 = v86util.view(Int32Array, memory, 512, 1);
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if(false) Object.defineProperty(this, "last_op1", { get: () => { return new Int32Array(memory.buffer, 512, 1); } });
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this.last_op2 = v86util.view(Int32Array, memory, 516, 1);
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if(false) Object.defineProperty(this, "last_op2", { get: () => { return new Int32Array(memory.buffer, 516, 1); } });
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this.last_op_size = v86util.view(Int32Array, memory, 520, 1);
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if(false) Object.defineProperty(this, "last_op_size", { get: () => { return new Int32Array(memory.buffer, 520, 1); } });
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this.last_add_result = v86util.view(Int32Array, memory, 524, 1);
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if(false) Object.defineProperty(this, "last_add_result", { get: () => { return new Int32Array(memory.buffer, 524, 1); } });
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this.last_result = v86util.view(Int32Array, memory, 528, 1);
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if(false) Object.defineProperty(this, "last_result", { get: () => { return new Int32Array(memory.buffer, 528, 1); } });
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this.current_tsc = v86util.view(Uint32Array, memory, 956, 2); // 64 bit
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@ -150,10 +120,7 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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this.devices = {};
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this.instruction_pointer = v86util.view(Int32Array, memory, 556, 1);
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if(false) Object.defineProperty(this, "instruction_pointer", { get: () => { return new Int32Array(memory.buffer, 556, 1); } });
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this.previous_ip = v86util.view(Int32Array, memory, 560, 1);
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if(false) Object.defineProperty(this, "previous_ip", { get: () => { return new Int32Array(memory.buffer, 560, 1); } });
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this.apic_enabled = true;
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@ -172,7 +139,6 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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vga: null,
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};
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if(false) Object.defineProperty(this, "timestamp_counter", { get: () => { return new Int32Array(memory.buffer, 664, 1); } });
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this.timestamp_counter = v86util.view(Uint32Array, memory, 664, 1);
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// registers
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@ -182,12 +148,6 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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this.reg16 = v86util.view(Uint16Array, memory, 4, 16);
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this.reg8s = v86util.view(Int8Array, memory, 4, 32);
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this.reg8 = v86util.view(Uint8Array, memory, 4, 32);
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if(false) Object.defineProperty(this, "reg32s", { get: () => { return new Int32Array(memory.buffer, 4, 8); } });
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if(false) Object.defineProperty(this, "reg32", { get: () => { return new Uint32Array(memory.buffer, 4, 8); } });
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if(false) Object.defineProperty(this, "reg16s", { get: () => { return new Int16Array(memory.buffer, 4, 16); } });
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if(false) Object.defineProperty(this, "reg16", { get: () => { return new Uint16Array(memory.buffer, 4, 16); } });
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if(false) Object.defineProperty(this, "reg8s", { get: () => { return new Int8Array(memory.buffer, 4, 32); } });
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if(false) Object.defineProperty(this, "reg8", { get: () => { return new Uint8Array(memory.buffer, 4, 32); } });
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// Why no Float80Array :-(
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this.fpu_st = v86util.view(Float64Array, memory, 968, 8);
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@ -226,7 +186,6 @@ function CPU(bus, wm, v86oxide, coverage_logger)
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// segment registers, tr and ldtr
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this.sreg = v86util.view(Uint16Array, memory, 668, 8);
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if(false) Object.defineProperty(this, "sreg", { get: () => { return new Uint16Array(memory.buffer, 668, 8); } });
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// debug registers
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this.dreg = v86util.view(Int32Array, memory, 684, 8);
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@ -1412,7 +1371,6 @@ var seen_code_uncompiled = {};
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CPU.prototype.codegen_finalize = function(wasm_table_index, start, end, first_opcode, state_flags)
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{
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dbg_assert(wasm_table_index >= 0 && wasm_table_index < WASM_TABLE_SIZE);
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//dbg_log("finalize");
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const code = this.wasmgen_get_module_code();
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if(DEBUG)
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@ -1421,7 +1379,9 @@ CPU.prototype.codegen_finalize = function(wasm_table_index, start, end, first_op
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{
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this.debug.dump_wasm(code);
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if(false)
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const DUMP_ASSEMBLY = false;
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if(DUMP_ASSEMBLY)
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{
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if((start ^ end) & ~0xFFF)
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{
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