210 lines
7.5 KiB
C++
210 lines
7.5 KiB
C++
/**
|
|
******************************************************************************
|
|
* Xenia : Xbox 360 Emulator Research Project *
|
|
******************************************************************************
|
|
* Copyright 2013 Ben Vanik. All rights reserved. *
|
|
* Released under the BSD license - see LICENSE in the root for more details. *
|
|
******************************************************************************
|
|
*/
|
|
|
|
#include "xenia/cpu/frontend/ppc_translator.h"
|
|
|
|
#include "xenia/base/assert.h"
|
|
#include "xenia/base/byte_order.h"
|
|
#include "xenia/base/memory.h"
|
|
#include "xenia/base/reset_scope.h"
|
|
#include "xenia/cpu/compiler/compiler_passes.h"
|
|
#include "xenia/cpu/cpu-private.h"
|
|
#include "xenia/cpu/frontend/ppc_disasm.h"
|
|
#include "xenia/cpu/frontend/ppc_frontend.h"
|
|
#include "xenia/cpu/frontend/ppc_hir_builder.h"
|
|
#include "xenia/cpu/frontend/ppc_instr.h"
|
|
#include "xenia/cpu/frontend/ppc_scanner.h"
|
|
#include "xenia/cpu/processor.h"
|
|
#include "xenia/profiling.h"
|
|
|
|
namespace xe {
|
|
namespace cpu {
|
|
namespace frontend {
|
|
|
|
// TODO(benvanik): remove when enums redefined.
|
|
using namespace xe::cpu;
|
|
|
|
using xe::cpu::backend::Backend;
|
|
using xe::cpu::compiler::Compiler;
|
|
namespace passes = xe::cpu::compiler::passes;
|
|
|
|
PPCTranslator::PPCTranslator(PPCFrontend* frontend) : frontend_(frontend) {
|
|
Backend* backend = frontend->processor()->backend();
|
|
|
|
scanner_.reset(new PPCScanner(frontend));
|
|
builder_.reset(new PPCHIRBuilder(frontend));
|
|
compiler_.reset(new Compiler(frontend->processor()));
|
|
assembler_ = std::move(backend->CreateAssembler());
|
|
assembler_->Initialize();
|
|
|
|
bool validate = FLAGS_validate_hir;
|
|
|
|
// Merge blocks early. This will let us use more context in other passes.
|
|
// The CFG is required for simplification and dirtied by it.
|
|
compiler_->AddPass(std::make_unique<passes::ControlFlowAnalysisPass>());
|
|
compiler_->AddPass(std::make_unique<passes::ControlFlowSimplificationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::ControlFlowAnalysisPass>());
|
|
|
|
// Passes are executed in the order they are added. Multiple of the same
|
|
// pass type may be used.
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::ContextPromotionPass>());
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::SimplificationPass>());
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::ConstantPropagationPass>());
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::SimplificationPass>());
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
// compiler_->AddPass(std::make_unique<passes::DeadStoreEliminationPass>());
|
|
// if (validate)
|
|
// compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
compiler_->AddPass(std::make_unique<passes::DeadCodeEliminationPass>());
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
|
|
//// Removes all unneeded variables. Try not to add new ones after this.
|
|
// compiler_->AddPass(new passes::ValueReductionPass());
|
|
// if (validate) compiler_->AddPass(new passes::ValidationPass());
|
|
|
|
// Register allocation for the target backend.
|
|
// Will modify the HIR to add loads/stores.
|
|
// This should be the last pass before finalization, as after this all
|
|
// registers are assigned and ready to be emitted.
|
|
compiler_->AddPass(std::make_unique<passes::RegisterAllocationPass>(
|
|
backend->machine_info()));
|
|
if (validate) compiler_->AddPass(std::make_unique<passes::ValidationPass>());
|
|
|
|
// Must come last. The HIR is not really HIR after this.
|
|
compiler_->AddPass(std::make_unique<passes::FinalizationPass>());
|
|
}
|
|
|
|
PPCTranslator::~PPCTranslator() = default;
|
|
|
|
int PPCTranslator::Translate(FunctionInfo* symbol_info,
|
|
uint32_t debug_info_flags, uint32_t trace_flags,
|
|
Function** out_function) {
|
|
SCOPE_profile_cpu_f("cpu");
|
|
|
|
// Reset() all caching when we leave.
|
|
xe::make_reset_scope(builder_);
|
|
xe::make_reset_scope(compiler_);
|
|
xe::make_reset_scope(assembler_);
|
|
xe::make_reset_scope(&string_buffer_);
|
|
|
|
// Scan the function to find its extents. We only need to do this if we
|
|
// haven't already been provided with them from some other source.
|
|
if (!symbol_info->has_end_address()) {
|
|
// TODO(benvanik): find a way to remove the need for the scan. A fixup
|
|
// scheme acting on branches could go back and modify calls to branches
|
|
// if they are within the extents.
|
|
int result = scanner_->FindExtents(symbol_info);
|
|
if (result) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// NOTE: we only want to do this when required, as it's expensive to build.
|
|
if (FLAGS_always_disasm) {
|
|
debug_info_flags |= DEBUG_INFO_ALL_DISASM;
|
|
}
|
|
std::unique_ptr<DebugInfo> debug_info;
|
|
if (debug_info_flags) {
|
|
debug_info.reset(new DebugInfo());
|
|
}
|
|
|
|
// Stash source.
|
|
if (debug_info_flags & DEBUG_INFO_SOURCE_DISASM) {
|
|
DumpSource(symbol_info, &string_buffer_);
|
|
debug_info->set_source_disasm(string_buffer_.ToString());
|
|
string_buffer_.Reset();
|
|
}
|
|
|
|
if (false) {
|
|
xe::cpu::frontend::DumpAllInstrCounts();
|
|
}
|
|
|
|
// Emit function.
|
|
uint32_t emit_flags = 0;
|
|
if (debug_info) {
|
|
emit_flags |= PPCHIRBuilder::EMIT_DEBUG_COMMENTS;
|
|
}
|
|
int result = builder_->Emit(symbol_info, emit_flags);
|
|
if (result) {
|
|
return result;
|
|
}
|
|
|
|
// Stash raw HIR.
|
|
if (debug_info_flags & DEBUG_INFO_RAW_HIR_DISASM) {
|
|
builder_->Dump(&string_buffer_);
|
|
debug_info->set_raw_hir_disasm(string_buffer_.ToString());
|
|
string_buffer_.Reset();
|
|
}
|
|
|
|
// Compile/optimize/etc.
|
|
result = compiler_->Compile(builder_.get());
|
|
if (result) {
|
|
return result;
|
|
}
|
|
|
|
// Stash optimized HIR.
|
|
if (debug_info_flags & DEBUG_INFO_HIR_DISASM) {
|
|
builder_->Dump(&string_buffer_);
|
|
debug_info->set_hir_disasm(string_buffer_.ToString());
|
|
string_buffer_.Reset();
|
|
}
|
|
|
|
// Assemble to backend machine code.
|
|
result =
|
|
assembler_->Assemble(symbol_info, builder_.get(), debug_info_flags,
|
|
std::move(debug_info), trace_flags, out_function);
|
|
if (result) {
|
|
return result;
|
|
}
|
|
|
|
return 0;
|
|
};
|
|
|
|
void PPCTranslator::DumpSource(FunctionInfo* symbol_info,
|
|
StringBuffer* string_buffer) {
|
|
Memory* memory = frontend_->memory();
|
|
|
|
string_buffer->Append("%s fn %.8X-%.8X %s\n",
|
|
symbol_info->module()->name().c_str(),
|
|
symbol_info->address(), symbol_info->end_address(),
|
|
symbol_info->name().c_str());
|
|
|
|
auto blocks = scanner_->FindBlocks(symbol_info);
|
|
|
|
uint32_t start_address = symbol_info->address();
|
|
uint32_t end_address = symbol_info->end_address();
|
|
InstrData i;
|
|
auto block_it = blocks.begin();
|
|
for (uint32_t address = start_address, offset = 0; address <= end_address;
|
|
address += 4, offset++) {
|
|
i.address = address;
|
|
i.code = xe::load_and_swap<uint32_t>(memory->TranslateVirtual(address));
|
|
// TODO(benvanik): find a way to avoid using the opcode tables.
|
|
i.type = GetInstrType(i.code);
|
|
|
|
// Check labels.
|
|
if (block_it != blocks.end() && block_it->start_address == address) {
|
|
string_buffer->Append("%.8X loc_%.8X:\n", address, address);
|
|
++block_it;
|
|
}
|
|
|
|
string_buffer->Append("%.8X %.8X ", address, i.code);
|
|
DisasmPPC(i, string_buffer);
|
|
string_buffer->Append("\n");
|
|
}
|
|
}
|
|
|
|
} // namespace frontend
|
|
} // namespace cpu
|
|
} // namespace xe
|