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block_of_code: Rename alloc to AllocateFromCodeSpace

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This commit is contained in:
MerryMage 2016-12-16 20:48:08 +00:00
parent 96e46ba6b5
commit 74a95ea51e
3 changed files with 10 additions and 6 deletions
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2
src/backend_x64/block_of_code.cpp
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@ -227,7 +227,7 @@ void BlockOfCode::nop(size_t size) {
} }
} }
void* BlockOfCode::alloc(size_t alloc_size) { void* BlockOfCode::AllocateFromCodeSpace(size_t alloc_size) {
if (size_ + alloc_size >= maxSize_) { if (size_ + alloc_size >= maxSize_) {
throw Xbyak::Error(Xbyak::ERR_CODE_IS_TOO_BIG); throw Xbyak::Error(Xbyak::ERR_CODE_IS_TOO_BIG);
} }

6
src/backend_x64/block_of_code.h
View file

@ -129,7 +129,11 @@ public:
void int3() { db(0xCC); } void int3() { db(0xCC); }
void nop(size_t size = 1); void nop(size_t size = 1);
void* alloc(size_t size); /// Allocate memory of `size` bytes from the same block of memory the code is in.
/// This is useful for objects that need to be placed close to or within code.
/// The lifetime of this memory is the same as the code around it.
void* AllocateFromCodeSpace(size_t size);
void SetCodePtr(CodePtr code_ptr); void SetCodePtr(CodePtr code_ptr);
void EnsurePatchLocationSize(CodePtr begin, size_t size); void EnsurePatchLocationSize(CodePtr begin, size_t size);

6
src/backend_x64/unwind_windows.cpp
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@ -177,7 +177,7 @@ void BlockOfCode::UnwindHandler::Register(BlockOfCode* code) {
const auto prolog_info = GetPrologueInformation(); const auto prolog_info = GetPrologueInformation();
code->align(16); code->align(16);
UNWIND_INFO* unwind_info = static_cast<UNWIND_INFO*>(code->alloc(sizeof(UNWIND_INFO))); UNWIND_INFO* unwind_info = static_cast<UNWIND_INFO*>(code->AllocateFromCodeSpace(sizeof(UNWIND_INFO)));
unwind_info->Version = 1; unwind_info->Version = 1;
unwind_info->Flags = 0; // No special exception handling required. unwind_info->Flags = 0; // No special exception handling required.
unwind_info->SizeOfProlog = prolog_info.prolog_size; unwind_info->SizeOfProlog = prolog_info.prolog_size;
@ -186,11 +186,11 @@ void BlockOfCode::UnwindHandler::Register(BlockOfCode* code) {
unwind_info->FrameOffset = 0; // Unused because FrameRegister == 0 unwind_info->FrameOffset = 0; // Unused because FrameRegister == 0
// UNWIND_INFO::UnwindCode field: // UNWIND_INFO::UnwindCode field:
const size_t size_of_unwind_code = sizeof(UNWIND_CODE) * prolog_info.unwind_code.size(); const size_t size_of_unwind_code = sizeof(UNWIND_CODE) * prolog_info.unwind_code.size();
UNWIND_CODE* unwind_code = static_cast<UNWIND_CODE*>(code->alloc(size_of_unwind_code)); UNWIND_CODE* unwind_code = static_cast<UNWIND_CODE*>(code->AllocateFromCodeSpace(size_of_unwind_code));
memcpy(unwind_code, prolog_info.unwind_code.data(), size_of_unwind_code); memcpy(unwind_code, prolog_info.unwind_code.data(), size_of_unwind_code);
code->align(16); code->align(16);
RUNTIME_FUNCTION* rfuncs = static_cast<RUNTIME_FUNCTION*>(code->alloc(sizeof(RUNTIME_FUNCTION))); RUNTIME_FUNCTION* rfuncs = static_cast<RUNTIME_FUNCTION*>(code->AllocateFromCodeSpace(sizeof(RUNTIME_FUNCTION)));
rfuncs->BeginAddress = static_cast<DWORD>(reinterpret_cast<u8*>(code->run_code) - code->getCode()); rfuncs->BeginAddress = static_cast<DWORD>(reinterpret_cast<u8*>(code->run_code) - code->getCode());
rfuncs->EndAddress = static_cast<DWORD>(code->maxSize_); rfuncs->EndAddress = static_cast<DWORD>(code->maxSize_);
rfuncs->UnwindData = static_cast<DWORD>(reinterpret_cast<u8*>(unwind_info) - code->getCode()); rfuncs->UnwindData = static_cast<DWORD>(reinterpret_cast<u8*>(unwind_info) - code->getCode());