94 lines
2.4 KiB
JavaScript
94 lines
2.4 KiB
JavaScript
"use strict";
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CPU.prototype.mmap_read8 = function(addr)
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{
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return this.memory_map_read8[addr >>> MMAP_BLOCK_BITS](addr);
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};
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CPU.prototype.mmap_write8 = function(addr, value)
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{
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this.memory_map_write8[addr >>> MMAP_BLOCK_BITS](addr, value);
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};
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CPU.prototype.mmap_read16 = function(addr)
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{
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var fn = this.memory_map_read8[addr >>> MMAP_BLOCK_BITS];
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return fn(addr) | fn(addr + 1 | 0) << 8;
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};
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CPU.prototype.mmap_write16 = function(addr, value)
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{
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var fn = this.memory_map_write8[addr >>> MMAP_BLOCK_BITS];
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fn(addr, value & 0xFF);
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fn(addr + 1 | 0, value >> 8 & 0xFF);
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};
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CPU.prototype.mmap_read32 = function(addr)
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{
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var aligned_addr = addr >>> MMAP_BLOCK_BITS;
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return this.memory_map_read32[aligned_addr](addr);
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};
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CPU.prototype.mmap_write32 = function(addr, value)
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{
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var aligned_addr = addr >>> MMAP_BLOCK_BITS;
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this.memory_map_write32[aligned_addr](addr, value);
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};
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CPU.prototype.mmap_write64 = function(addr, value0, value1)
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{
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var aligned_addr = addr >>> MMAP_BLOCK_BITS;
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// This should hold since writes across pages are split up
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dbg_assert(aligned_addr === (addr + 7) >>> MMAP_BLOCK_BITS);
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var write_func32 = this.memory_map_write32[aligned_addr];
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write_func32(addr, value0);
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write_func32(addr + 4, value1);
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};
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CPU.prototype.mmap_write128 = function(addr, value0, value1, value2, value3)
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{
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var aligned_addr = addr >>> MMAP_BLOCK_BITS;
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// This should hold since writes across pages are split up
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dbg_assert(aligned_addr === (addr + 12) >>> MMAP_BLOCK_BITS);
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var write_func32 = this.memory_map_write32[aligned_addr];
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write_func32(addr, value0);
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write_func32(addr + 4, value1);
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write_func32(addr + 8, value2);
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write_func32(addr + 12, value3);
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};
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/**
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* @param {Array.<number>|Uint8Array} blob
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* @param {number} offset
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*/
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CPU.prototype.write_blob = function(blob, offset)
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{
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dbg_assert(blob && blob.length >= 0);
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if(blob.length)
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{
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dbg_assert(!this.in_mapped_range(offset));
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dbg_assert(!this.in_mapped_range(offset + blob.length - 1));
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this.jit_dirty_cache(offset, offset + blob.length);
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this.mem8.set(blob, offset);
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}
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};
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CPU.prototype.read_blob = function(offset, length)
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{
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if(length)
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{
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dbg_assert(!this.in_mapped_range(offset));
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dbg_assert(!this.in_mapped_range(offset + length - 1));
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}
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return this.mem8.subarray(offset, offset + length);
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};
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