Fixing a bunch of valgrind errors and reworking globals.

bin/xenia-run

@@ -14,3 +14,8 @@ if [ ! -f "$EXEC" ]; then
 fi
 
 $EXEC "$@"
+
+
+# TODO(benvanik): add --valgrind and --leaks
+# xbb --debug && rm valgrind.txt && valgrind --log-file=valgrind.txt --dsymutil=yes build/xenia/debug/xenia-run "$@"
+# --track-origins=yes --leak-check=full

include/xenia/cpu/exec_module.h

@@ -50,6 +50,7 @@ public:
   void Dump();
 
 private:
+  int InjectGlobals();
   int Init();
   int Uninit();
 

include/xenia/cpu/ppc/state.h

@@ -10,45 +10,54 @@
 #ifndef XENIA_CPU_PPC_STATE_H_
 #define XENIA_CPU_PPC_STATE_H_
 
-#include <xenia/common.h>
+
+/**
+ * NOTE: this file is included by xethunk and as such should have a *MINIMAL*
+ * set of dependencies!
+ */
+
+#include <stdint.h>
 
 
-namespace xe {
-namespace cpu {
-namespace ppc {
+// namespace FPRF {
+//   enum FPRF_e {
+//     QUIET_NAN             = 0x00088000,
+//     NEG_INFINITY          = 0x00090000,
+//     NEG_NORMALIZED        = 0x00010000,
+//     NEG_DENORMALIZED      = 0x00018000,
+//     NEG_ZERO              = 0x00048000,
+//     POS_ZERO              = 0x00040000,
+//     POS_DENORMALIZED      = 0x00028000,
+//     POS_NORMALIZED        = 0x00020000,
+//     POS_INFINITY          = 0x000A0000,
+//   };
+// }  // FPRF
 
 
-namespace SPR {
-  enum SPR_e {
-    XER                   = 1,
-    LR                    = 8,
-    CTR                   = 9,
+typedef struct XECACHEALIGN {
+  union {
+    struct {
+      float     x;
+      float     y;
+      float     z;
+      float     w;
     };
-}  // SPR
-
-
-namespace FPRF {
-  enum FPRF_e {
-    QUIET_NAN             = 0x00088000,
-    NEG_INFINITY          = 0x00090000,
-    NEG_NORMALIZED        = 0x00010000,
-    NEG_DENORMALIZED      = 0x00018000,
-    NEG_ZERO              = 0x00048000,
-    POS_ZERO              = 0x00040000,
-    POS_DENORMALIZED      = 0x00028000,
-    POS_NORMALIZED        = 0x00020000,
-    POS_INFINITY          = 0x000A0000,
+    float       f4[4];
+    struct {
+      uint64_t  low;
+      uint64_t  high;
     };
-}  // FPRF
+  };
+} xe_float4_t;
 
 
 typedef struct XECACHEALIGN64 {
   uint64_t    r[32];              // General purpose registers
-  xefloat4_t  v[128];             // VMX128 vector registers
+  xe_float4_t v[128];             // VMX128 vector registers
   double      f[32];              // Floating-point registers
 
-  uint32_t    pc;                 // Current PC (CIA)
-  uint32_t    npc;                // Next PC (NIA)
+  uint32_t    cia;                // Current PC (CIA)
+  uint32_t    nia;                // Next PC (NIA)
   uint64_t    xer;                // XER register
   uint64_t    lr;                 // Link register
   uint64_t    ctr;                // Count register
@@ -109,23 +118,13 @@ typedef struct XECACHEALIGN64 {
     } bits;
   } fpscr;                        // Floating-point status and control register
 
-  uint32_t get_fprf() {
-    return fpscr.value & 0x000F8000;
-  }
-  void set_fprf(const uint32_t v) {
-    fpscr.value = (fpscr.value & ~0x000F8000) | v;
-  }
-} PpcRegisters;
-
-
-typedef struct {
-  PpcRegisters      registers;
-} PpcState;
-
-
-}  // namespace ppc
-}  // namespace cpu
-}  // namespace xe
+  // uint32_t get_fprf() {
+  //   return fpscr.value & 0x000F8000;
+  // }
+  // void set_fprf(const uint32_t v) {
+  //   fpscr.value = (fpscr.value & ~0x000F8000) | v;
+  // }
+} xe_ppc_state_t;
 
 
 #endif  // XENIA_CPU_PPC_STATE_H_

include/xenia/cpu/processor.h

@@ -49,6 +49,8 @@ private:
   xe_memory_ref           memory_;
   shared_ptr<llvm::ExecutionEngine> engine_;
 
+  auto_ptr<llvm::LLVMContext> dummy_context_;
+
   std::vector<ExecModule*> modules_;
 };
 

include/xenia/cpu/sdb.h

@@ -71,6 +71,8 @@ public:
     kTargetNone     = 4,
   };
 
+  FunctionBlock();
+
   uint32_t      start_address;
   uint32_t      end_address;
 
@@ -96,7 +98,7 @@ public:
     kFlagRestGprLr  = 1 << 2,
   };
 
-  FunctionSymbol() : Symbol(Function) {}
+  FunctionSymbol();
   virtual ~FunctionSymbol();
 
   FunctionBlock* GetBlock(uint32_t address);
@@ -120,7 +122,7 @@ public:
 
 class VariableSymbol : public Symbol {
 public:
-  VariableSymbol() : Symbol(Variable) {}
+  VariableSymbol();
   virtual ~VariableSymbol();
 
   uint32_t  address;
@@ -129,7 +131,7 @@ public:
 
 class ExceptionEntrySymbol : public Symbol {
 public:
-  ExceptionEntrySymbol() : Symbol(ExceptionEntry) {}
+  ExceptionEntrySymbol();
   virtual ~ExceptionEntrySymbol() {}
 
   uint32_t  address;

include/xenia/types.h

@@ -117,21 +117,4 @@ typedef XECACHEALIGN volatile void xe_aligned_void_t;
 #define XEIGNORE(expr)          do { (void)(expr); } while(0)
 
 
-typedef struct XECACHEALIGN {
-  union {
-    struct {
-      float     x;
-      float     y;
-      float     z;
-      float     w;
-    };
-    float       f4[4];
-    struct {
-      uint64_t  low;
-      uint64_t  high;
-    };
-  };
-} xefloat4_t;
-
-
 #endif  // XENIA_TYPES_H_

src/cpu/codegen/module_generator.cc

@@ -45,9 +45,16 @@ ModuleGenerator::ModuleGenerator(
   sdb_ = sdb;
   context_ = context;
   gen_module_ = gen_module;
+  di_builder_ = NULL;
 }
 
 ModuleGenerator::~ModuleGenerator() {
+  for (std::map<uint32_t, CodegenFunction*>::iterator it =
+       functions_.begin(); it != functions_.end(); ++it) {
+    delete it->second;
+  }
+
+  delete di_builder_;
   xe_memory_release(memory_);
 }
 

src/cpu/exec_module.cc

@@ -15,6 +15,7 @@
 #include <llvm/Bitcode/ReaderWriter.h>
 #include <llvm/ExecutionEngine/GenericValue.h>
 #include <llvm/ExecutionEngine/ExecutionEngine.h>
+#include <llvm/IR/Constants.h>
 #include <llvm/IR/DataLayout.h>
 #include <llvm/IR/DerivedTypes.h>
 #include <llvm/IR/LLVMContext.h>
@@ -108,6 +109,11 @@ int ExecModule::Prepare() {
         new Module(module_->name(), *context_.get()));
     // TODO(benavnik): addModuleFlag?
 
+    // Inject globals.
+    // This should be done ASAP to ensure that JITed functions can use the
+    // constant addresses.
+    XEEXPECTZERO(InjectGlobals());
+
     // Link shared module into generated module.
     // This gives us a single module that we can optimize and prevents the need
     // for foreward declarations.
@@ -165,19 +171,41 @@ XECLEANUP:
   return result_code;
 }
 
+int ExecModule::InjectGlobals() {
+  LLVMContext& context = *context_.get();
+  const DataLayout* dl = engine_->getDataLayout();
+  Type* voidPtrTy = PointerType::getUnqual(Type::getVoidTy(context));
+  Type* intPtrTy = dl->getIntPtrType(context);
+  GlobalVariable* gv;
+
+  // xe_memory_base
+  // This is the base void* pointer to the memory space.
+  gv = new GlobalVariable(
+      *gen_module_,
+      voidPtrTy,
+      true,
+      GlobalValue::ExternalLinkage,
+      0,
+      "xe_memory_base");
+  // Align to 64b - this makes SSE faster.
+  gv->setAlignment(64);
+  gv->setInitializer(ConstantExpr::getIntToPtr(
+      ConstantInt::get(intPtrTy, (uintptr_t)xe_memory_addr(memory_, 0)),
+      voidPtrTy));
+
+  // xe_ppc_state
+  // ...
+
+  return 0;
+}
+
 int ExecModule::Init() {
   // Run static initializers. I'm not sure we'll have any, but who knows.
   engine_->runStaticConstructorsDestructors(gen_module_.get(), false);
 
-  // Prepare init options.
-  xe_module_init_options_t init_options;
-  xe_zero_struct(&init_options, sizeof(init_options));
-  init_options.memory_base = xe_memory_addr(memory_, 0);
-
   // Grab the init function and call it.
   Function* xe_module_init = gen_module_->getFunction("xe_module_init");
   std::vector<GenericValue> args;
-  args.push_back(GenericValue(&init_options));
   GenericValue ret = engine_->runFunction(xe_module_init, args);
 
   return ret.IntVal.getSExtValue();

src/cpu/processor.cc

@@ -71,8 +71,8 @@ int Processor::Setup() {
     return 1;
   }
 
-  LLVMContext* dummy_context = new LLVMContext();
-  Module* dummy_module = new Module("dummy", *dummy_context);
+  dummy_context_ = auto_ptr<LLVMContext>(new LLVMContext());
+  Module* dummy_module = new Module("dummy", *dummy_context_.get());
 
   std::string error_message;
   engine_ = shared_ptr<ExecutionEngine>(

src/cpu/sdb.cc

@@ -22,6 +22,19 @@ using namespace xe::cpu::sdb;
 using namespace xe::kernel;
 
 
+FunctionBlock::FunctionBlock() :
+    start_address(0), end_address(0),
+    outgoing_type(kTargetUnknown), outgoing_address(0),
+    outgoing_function(0) {
+}
+
+FunctionSymbol::FunctionSymbol() :
+    Symbol(Function),
+    start_address(0), end_address(0), name(0),
+    type(Unknown), flags(0),
+    kernel_export(0), ee(0) {
+}
+
 FunctionSymbol::~FunctionSymbol() {
   delete name;
   for (std::map<uint32_t, FunctionBlock*>::iterator it = blocks.begin();
@@ -68,10 +81,20 @@ FunctionBlock* FunctionSymbol::SplitBlock(uint32_t address) {
   return NULL;
 }
 
+VariableSymbol::VariableSymbol() :
+    Symbol(Variable),
+    address(0), name(0) {
+}
+
 VariableSymbol::~VariableSymbol() {
   delete name;
 }
 
+ExceptionEntrySymbol::ExceptionEntrySymbol() :
+  Symbol(ExceptionEntry),
+  address(0), function(0) {
+}
+
 SymbolDatabase::SymbolDatabase(
     xe_memory_ref memory, ExportResolver* export_resolver, UserModule* module) {
   memory_ = xe_memory_retain(memory);
@@ -419,6 +442,7 @@ int SymbolDatabase::AddImports(const xe_xex2_import_library_t* library) {
     }
   }
 
+  xe_free(import_infos);
   xe_xex2_release(xex);
   return 0;
 }
@@ -438,6 +462,7 @@ int SymbolDatabase::AddMethodHints() {
     // TODO(benvanik): something with prolog_length?
   }
 
+  xe_free(method_infos);
   return 0;
 }
 

src/cpu/xethunk/xethunk.c

@@ -21,15 +21,16 @@
 
 // NOTE: only headers in this directory should be included.
 #include "xethunk.h"
+#include <xenia/cpu/ppc/state.h>
 
 
-// The base pointer that all guest addresses should be relative to.
-static void* xe_memory_base;
+// Global CPU state.
+// Instructions that dereference the state use this.
+// TODO(benvanik): noalias/invariant/etc?s
+static xe_ppc_state_t* xe_ppc_state;
 
 
-int xe_module_init(xe_module_init_options_t *options) {
-  xe_memory_base = options->memory_base;
-
+int xe_module_init() {
   // TODO(benvanik): setup call table, etc?
 
   return 0;

src/cpu/xethunk/xethunk.h

@@ -17,11 +17,4 @@
 #define XENIA_CPU_XELIB_H_
 
 
-typedef struct {
-  void*   memory_base;
-
-  // TODO(benvanik): execute call thunk
-} xe_module_init_options_t;
-
-
 #endif  // XENIA_CPU_XELIB_H_

src/cpu/xethunk/xethunk.ll

@@ -2,17 +2,7 @@
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
 target triple = "x86_64-apple-macosx10.8.0"
 
-%struct.xe_module_init_options_t = type { i8* }
-
-@xe_memory_base = internal global i8* null, align 8
-
-define i32 @xe_module_init(%struct.xe_module_init_options_t* %options) nounwind uwtable ssp {
-  %1 = alloca %struct.xe_module_init_options_t*, align 8
-  store %struct.xe_module_init_options_t* %options, %struct.xe_module_init_options_t** %1, align 8
-  %2 = load %struct.xe_module_init_options_t** %1, align 8
-  %3 = getelementptr inbounds %struct.xe_module_init_options_t* %2, i32 0, i32 0
-  %4 = load i8** %3, align 8
-  store i8* %4, i8** @xe_memory_base, align 8
+define i32 @xe_module_init() nounwind uwtable ssp {
   ret i32 0
 }
 

xenia-build.py

@@ -394,7 +394,7 @@ class XethunkCommand(Command):
     print ''
 
     path = 'src/cpu/xethunk/xethunk'
-    result = shell_call('clang -emit-llvm -O0 -c %s.c -o %s.bc' % (path, path),
+    result = shell_call('clang -emit-llvm -O0 -Iinclude/ -c %s.c -o %s.bc' % (path, path),
                         throw_on_error=False)
     if result != 0:
       return result