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Changing calls/jmps to use the indirection table. Most games seem faster.

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This commit is contained in:
Ben Vanik
2015-05-21 00:12:28 -07:00
parent ad72c193a6
commit fc4727c339
7 changed files with 144 additions and 178 deletions
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21
src/xenia/cpu/backend/x64/x64_code_cache.cc
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@@ -24,7 +24,8 @@ namespace x64 {
const static uint32_t kUnwindInfoSize = 4 + (2 * 1 + 2 + 2);
X64CodeCache::X64CodeCache()
: indirection_table_base_(nullptr),
: indirection_default_value_(0xFEEDF00D),
indirection_table_base_(nullptr),
generated_code_base_(nullptr),
generated_code_offset_(0),
generated_code_commit_mark_(0),
@@ -87,10 +88,28 @@ bool X64CodeCache::Initialize() {
return true;
}
void X64CodeCache::set_indirection_default(uint32_t default_value) {
indirection_default_value_ = default_value;
}
void X64CodeCache::AddIndirection(uint32_t guest_address,
uint32_t host_address) {
uint32_t* indirection_slot = reinterpret_cast<uint32_t*>(
indirection_table_base_ + (guest_address - kIndirectionTableBase));
*indirection_slot = host_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_READWRITE);
// Fill memory with the default value.
uint32_t* p = reinterpret_cast<uint32_t*>(indirection_table_base_);
for (uint32_t address = guest_low; address < guest_high; ++address) {
p[(address - kIndirectionTableBase) / 4] = indirection_default_value_;
}
}
void* X64CodeCache::PlaceCode(uint32_t guest_address, void* machine_code,