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Adding mmap for code cache and exposing cache properties.

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This commit is contained in:
Ben Vanik
2015-06-16 20:13:39 -07:00
parent c34db170f5
commit 5f33087a12
8 changed files with 80 additions and 13 deletions
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32
src/xenia/cpu/backend/x64/x64_code_cache.cc
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@@ -10,6 +10,7 @@
#include "xenia/cpu/backend/x64/x64_code_cache.h"
#include "xenia/base/assert.h"
#include "xenia/base/clock.h"
#include "xenia/base/logging.h"
#include "xenia/base/math.h"
#include "xenia/base/memory.h"
@@ -24,7 +25,8 @@ namespace x64 {
const static uint32_t kUnwindInfoSize = 4 + (2 * 1 + 2 + 2);
X64CodeCache::X64CodeCache()
: indirection_default_value_(0xFEEDF00D),
: mapping_(nullptr),
indirection_default_value_(0xFEEDF00D),
indirection_table_base_(nullptr),
generated_code_base_(nullptr),
generated_code_offset_(0),
@@ -39,8 +41,11 @@ X64CodeCache::~X64CodeCache() {
if (indirection_table_base_) {
VirtualFree(indirection_table_base_, 0, MEM_RELEASE);
}
if (generated_code_base_) {
VirtualFree(generated_code_base_, 0, MEM_RELEASE);
// Unmap all views and close mapping.
if (mapping_) {
UnmapViewOfFile(generated_code_base_);
CloseHandle(mapping_);
mapping_ = 0;
}
}
@@ -57,9 +62,22 @@ bool X64CodeCache::Initialize() {
return false;
}
generated_code_base_ = reinterpret_cast<uint8_t*>(
VirtualAlloc(reinterpret_cast<void*>(kGeneratedCodeBase),
kGeneratedCodeSize, MEM_RESERVE, PAGE_EXECUTE_READWRITE));
// Create mmap file. This allows us to share the code cache with the debugger.
wchar_t file_name[256];
wsprintf(file_name, L"Local\\xenia_code_cache_%p", Clock::QueryHostTickCount());
file_name_ = file_name;
mapping_ = CreateFileMapping(INVALID_HANDLE_VALUE, NULL,
PAGE_EXECUTE_READWRITE | SEC_RESERVE, 0,
kGeneratedCodeSize, file_name_.c_str());
if (!mapping_) {
XELOGE("Unable to create code cache mmap");
return false;
}
// Mapp 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)));
if (!generated_code_base_) {
XELOGE("Unable to allocate code cache generated code storage");
XELOGE(
@@ -103,7 +121,7 @@ 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_READWRITE);
guest_high - guest_low, MEM_COMMIT, PAGE_EXECUTE_READWRITE);
// Fill memory with the default value.
uint32_t* p = reinterpret_cast<uint32_t*>(indirection_table_base_);