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Abstraction for VirtualAlloc/VirtualFree.

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This commit is contained in:
Ben Vanik
2015-07-15 19:05:08 -07:00
parent 58c3a1ba79
commit 6cf29b969d
4 changed files with 124 additions and 88 deletions
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28
src/xenia/cpu/backend/x64/x64_code_cache.cc
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@@ -43,7 +43,8 @@ X64CodeCache::X64CodeCache()
X64CodeCache::~X64CodeCache() {
if (indirection_table_base_) {
VirtualFree(indirection_table_base_, 0, MEM_RELEASE);
xe::memory::DeallocFixed(indirection_table_base_, 0,
xe::memory::DeallocationType::kRelease);
}
#ifdef USE_GROWABLE_FUNCTION_TABLE
@@ -66,9 +67,10 @@ X64CodeCache::~X64CodeCache() {
}
bool X64CodeCache::Initialize() {
indirection_table_base_ = reinterpret_cast<uint8_t*>(
VirtualAlloc(reinterpret_cast<void*>(kIndirectionTableBase),
kIndirectionTableSize, MEM_RESERVE, PAGE_READWRITE));
indirection_table_base_ = reinterpret_cast<uint8_t*>(xe::memory::AllocFixed(
reinterpret_cast<void*>(kIndirectionTableBase), kIndirectionTableSize,
xe::memory::AllocationType::kReserve,
xe::memory::PageAccess::kReadWrite));
if (!indirection_table_base_) {
XELOGE("Unable to allocate code cache indirection table");
XELOGE(
@@ -91,7 +93,7 @@ bool X64CodeCache::Initialize() {
return false;
}
// Mapp generated code region into the file. Pages are committed as required.
// Map generated code region into the file. Pages are committed as required.
generated_code_base_ = reinterpret_cast<uint8_t*>(MapViewOfFileEx(
mapping_, FILE_MAP_ALL_ACCESS | FILE_MAP_EXECUTE, 0, 0,
kGeneratedCodeSize, reinterpret_cast<void*>(kGeneratedCodeBase)));
@@ -153,8 +155,10 @@ void X64CodeCache::AddIndirection(uint32_t guest_address,
void X64CodeCache::CommitExecutableRange(uint32_t guest_low,
uint32_t guest_high) {
// Commit the memory.
VirtualAlloc(indirection_table_base_ + (guest_low - kIndirectionTableBase),
guest_high - guest_low, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
xe::memory::AllocFixed(
indirection_table_base_ + (guest_low - kIndirectionTableBase),
guest_high - guest_low, xe::memory::AllocationType::kCommit,
xe::memory::PageAccess::kExecuteReadWrite);
// Fill memory with the default value.
uint32_t* p = reinterpret_cast<uint32_t*>(indirection_table_base_);
@@ -198,8 +202,9 @@ void* X64CodeCache::PlaceCode(uint32_t guest_address, void* machine_code,
size_t old_commit_mark = generated_code_commit_mark_;
if (high_mark > old_commit_mark) {
size_t new_commit_mark = old_commit_mark + 16 * 1024 * 1024;
VirtualAlloc(generated_code_base_, new_commit_mark, MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
xe::memory::AllocFixed(generated_code_base_, new_commit_mark,
xe::memory::AllocationType::kCommit,
xe::memory::PageAccess::kExecuteReadWrite);
generated_code_commit_mark_.compare_exchange_strong(old_commit_mark,
new_commit_mark);
}
@@ -394,8 +399,9 @@ uint32_t X64CodeCache::PlaceData(const void* data, size_t length) {
size_t old_commit_mark = generated_code_commit_mark_;
if (high_mark > old_commit_mark) {
size_t new_commit_mark = old_commit_mark + 16 * 1024 * 1024;
VirtualAlloc(generated_code_base_, new_commit_mark, MEM_COMMIT,
PAGE_EXECUTE_READWRITE);
xe::memory::AllocFixed(generated_code_base_, new_commit_mark,
xe::memory::AllocationType::kCommit,
xe::memory::PageAccess::kExecuteReadWrite);
generated_code_commit_mark_.compare_exchange_strong(old_commit_mark,
new_commit_mark);
}