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Minor decoder optimizations, kernel fixes, cpu backend fixes

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This commit is contained in:
chss95cs@gmail.com
2022-11-05 10:50:33 -07:00
parent ba66373d8c
commit c1d922eebf
62 changed files with 1254 additions and 802 deletions
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96
src/xenia/cpu/backend/x64/x64_emitter.cc
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@@ -46,10 +46,6 @@ DEFINE_bool(ignore_undefined_externs, true,
DEFINE_bool(emit_source_annotations, false,
"Add extra movs and nops to make disassembly easier to read.",
"CPU");
DEFINE_bool(resolve_rel32_guest_calls, true,
"Experimental optimization, directly call already resolved "
"functions via x86 rel32 call/jmp",
"CPU");
DEFINE_bool(enable_incorrect_roundingmode_behavior, false,
"Disables the FPU/VMX MXCSR sharing workaround, potentially "
@@ -78,7 +74,6 @@ using namespace xe::literals;
static const size_t kMaxCodeSize = 1_MiB;
static const size_t kStashOffset = 32;
// static const size_t kStashOffsetHigh = 32 + 32;
const uint32_t X64Emitter::gpr_reg_map_[X64Emitter::GPR_COUNT] = {
@@ -141,55 +136,6 @@ bool X64Emitter::Emit(GuestFunction* function, HIRBuilder* builder,
return true;
}
#pragma pack(push, 1)
struct RGCEmitted {
uint8_t ff_;
uint32_t rgcid_;
};
#pragma pack(pop)
#if 0
void X64Emitter::InjectCallAddresses(void* new_execute_address) {
for (auto&& callsite : call_sites_) {
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
while (hunter->ff_ != 0xFF || hunter->rgcid_ != callsite.offset_) {
hunter =
reinterpret_cast<RGCEmitted*>(reinterpret_cast<char*>(hunter) + 1);
}
hunter->ff_ = callsite.is_jump_ ? 0xE9 : 0xE8;
hunter->rgcid_ =
static_cast<uint32_t>(static_cast<intptr_t>(callsite.destination_) -
reinterpret_cast<intptr_t>(hunter + 1));
}
}
#else
void X64Emitter::InjectCallAddresses(void* new_execute_address) {
#if 0
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
std::map<uint32_t, ResolvableGuestCall*> id_to_rgc{};
for (auto&& callsite : call_sites_) {
id_to_rgc[callsite.offset_] = &callsite;
}
#else
RGCEmitted* hunter = (RGCEmitted*)new_execute_address;
for (auto&& callsite : call_sites_) {
while (hunter->ff_ != 0xFF || hunter->rgcid_ != callsite.offset_) {
hunter =
reinterpret_cast<RGCEmitted*>(reinterpret_cast<char*>(hunter) + 1);
}
hunter->ff_ = callsite.is_jump_ ? 0xE9 : 0xE8;
hunter->rgcid_ =
static_cast<uint32_t>(static_cast<intptr_t>(callsite.destination_) -
reinterpret_cast<intptr_t>(hunter + 1));
}
#endif
}
#endif
void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
GuestFunction* function) {
// To avoid changing xbyak, we do a switcharoo here.
@@ -207,10 +153,6 @@ void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
if (function) {
code_cache_->PlaceGuestCode(function->address(), top_, func_info, function,
new_execute_address, new_write_address);
if (cvars::resolve_rel32_guest_calls) {
InjectCallAddresses(new_execute_address);
}
} else {
code_cache_->PlaceHostCode(0, top_, func_info, new_execute_address,
new_write_address);
@@ -219,7 +161,6 @@ void* X64Emitter::Emplace(const EmitFunctionInfo& func_info,
ready();
top_ = old_address;
reset();
call_sites_.clear();
tail_code_.clear();
for (auto&& cached_label : label_cache_) {
delete cached_label;
@@ -336,7 +277,7 @@ bool X64Emitter::Emit(HIRBuilder* builder, EmitFunctionInfo& func_info) {
// Mark block labels.
auto label = block->label_head;
while (label) {
L(label->name);
L(std::to_string(label->id));
label = label->next;
}
@@ -418,7 +359,6 @@ void X64Emitter::EmitProfilerEpilogue() {
// actually... lets just try without atomics lol
// lock();
add(qword[r10], rdx);
}
#endif
}
@@ -534,44 +474,23 @@ void X64Emitter::Call(const hir::Instr* instr, GuestFunction* function) {
auto fn = static_cast<X64Function*>(function);
// Resolve address to the function to call and store in rax.
if (cvars::resolve_rel32_guest_calls && fn->machine_code()) {
ResolvableGuestCall rgc;
rgc.destination_ = uint32_t(uint64_t(fn->machine_code()));
rgc.offset_ = current_rgc_id_;
current_rgc_id_++;
if (fn->machine_code()) {
if (!(instr->flags & hir::CALL_TAIL)) {
mov(rcx, qword[rsp + StackLayout::GUEST_CALL_RET_ADDR]);
db(0xFF);
rgc.is_jump_ = false;
dd(rgc.offset_);
call((void*)fn->machine_code());
} else {
// tail call
EmitTraceUserCallReturn();
rgc.is_jump_ = true;
EmitProfilerEpilogue();
// Pass the callers return address over.
mov(rcx, qword[rsp + StackLayout::GUEST_RET_ADDR]);
add(rsp, static_cast<uint32_t>(stack_size()));
db(0xFF);
dd(rgc.offset_);
jmp((void*)fn->machine_code(), T_NEAR);
}
call_sites_.push_back(rgc);
return;
}
if (fn->machine_code()) {
// TODO(benvanik): is it worth it to do this? It removes the need for
// a ResolveFunction call, but makes the table less useful.
assert_zero(uint64_t(fn->machine_code()) & 0xFFFFFFFF00000000);
// todo: this should be changed so that we can actually do a call to
// fn->machine_code. the code will be emitted near us, so 32 bit rel jmp
// should be possible
mov(eax, uint32_t(uint64_t(fn->machine_code())));
} else if (code_cache_->has_indirection_table()) {
// Load the pointer to the indirection table maintained in X64CodeCache.
// The target dword will either contain the address of the generated code
@@ -1017,7 +936,10 @@ static const vec128_t xmm_consts[] = {
/*XMMSTVLShuffle*/
v128_setr_bytes(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15),
/* XMMSTVRSwapMask*/
vec128b((uint8_t)0x83)};
vec128b((uint8_t)0x83), /*XMMVSRShlByteshuf*/
v128_setr_bytes(13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3, 0x80),
// XMMVSRMask
vec128b(1)};
void* X64Emitter::FindByteConstantOffset(unsigned bytevalue) {
for (auto& vec : xmm_consts) {