37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
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/* This file is part of the dynarmic project.
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* Copyright (c) 2016 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#include <cstring>
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#include "backend_x64/block_of_code.h"
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#include "backend_x64/constant_pool.h"
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#include "common/assert.h"
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namespace Dynarmic {
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namespace BackendX64 {
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ConstantPool::ConstantPool(BlockOfCode* code, size_t size) : code(code), pool_size(size) {
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code->int3();
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code->align(align_size);
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pool_begin = reinterpret_cast<u8*>(code->AllocateFromCodeSpace(size));
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std::memset(pool_begin, 0, size);
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current_pool_ptr = pool_begin;
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}
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Xbyak::Address ConstantPool::GetConstant(u64 constant) {
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auto iter = constant_info.find(constant);
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if (iter == constant_info.end()) {
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ASSERT(static_cast<size_t>(current_pool_ptr - pool_begin) < pool_size);
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std::memcpy(current_pool_ptr, &constant, sizeof(u64));
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iter = constant_info.emplace(constant, current_pool_ptr).first;
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current_pool_ptr += align_size;
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}
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return code->xword[code->rip + iter->second];
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}
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} // namespace BackendX64
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} // namespace Dynarmic
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