mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-09-27 00:21:03 +00:00
Changing model for the construction of debug information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26016 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
@@ -11,11 +11,14 @@
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/GlobalVariable.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/Instructions.h"
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#include "llvm/Module.h"
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#include "llvm/Support/Dwarf.h"
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#include <iostream>
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using namespace llvm;
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// Handle the Pass registration stuff necessary to use TargetData's.
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@@ -25,14 +28,14 @@ namespace {
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//===----------------------------------------------------------------------===//
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/// getGlobalVariablesUsing - Return all of the global variables which have the
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/// getGlobalVariablesUsing - Return all of the GlobalVariables which have the
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/// specified value in their initializer somewhere.
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static void
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getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
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// Scan though value users.
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for (Value::use_iterator I = V->use_begin(), E = V->use_end(); I != E; ++I) {
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(*I)) {
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// If the user is a global variable then add to result.
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// If the user is a GlobalVariable then add to result.
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Result.push_back(GV);
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} else if (Constant *C = dyn_cast<Constant>(*I)) {
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// If the user is a constant variable then scan its users
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@@ -41,13 +44,13 @@ getGlobalVariablesUsing(Value *V, std::vector<GlobalVariable*> &Result) {
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}
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}
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/// getGlobalVariablesUsing - Return all of the global variables that use the
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/// named global variable.
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/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
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/// named GlobalVariable.
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static std::vector<GlobalVariable*>
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getGlobalVariablesUsing(Module &M, const std::string &RootName) {
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std::vector<GlobalVariable*> Result; // Global variables matching criteria.
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std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
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// Get the global variable root.
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// Get the GlobalVariable root.
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GlobalVariable *UseRoot = M.getGlobalVariable(RootName,
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StructType::get(std::vector<const Type*>()));
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@@ -98,131 +101,646 @@ static const std::string getStringValue(Value *V, unsigned Offset = 0) {
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return "";
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}
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/// isStringValue - Return true if the given value can be coerced to a string.
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///
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static bool isStringValue(Value *V) {
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
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if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
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ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
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return Init->isString();
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}
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} else if (Constant *C = dyn_cast<Constant>(V)) {
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if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
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return isStringValue(GV);
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else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
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if (CE->getOpcode() == Instruction::GetElementPtr) {
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if (CE->getNumOperands() == 3 &&
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cast<Constant>(CE->getOperand(1))->isNullValue() &&
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isa<ConstantInt>(CE->getOperand(2))) {
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return isStringValue(CE->getOperand(0));
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}
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}
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}
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}
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return false;
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}
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/// getGlobalValue - Return either a direct or cast Global value.
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///
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static GlobalVariable *getGlobalValue(Value *V) {
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if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
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return GV;
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} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
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return CE->getOpcode() == Instruction::Cast ? dyn_cast<GlobalVariable>(V)
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: NULL;
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if (CE->getOpcode() == Instruction::Cast) {
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return dyn_cast<GlobalVariable>(CE->getOperand(0));
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}
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}
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return NULL;
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}
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/// isGlobalValue - Return true if the given value can be coerced to a
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/// GlobalVariable.
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static bool isGlobalValue(Value *V) {
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if (isa<GlobalVariable>(V) || isa<ConstantPointerNull>(V)) {
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return true;
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} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
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if (CE->getOpcode() == Instruction::Cast) {
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return isa<GlobalVariable>(CE->getOperand(0));
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}
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}
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return false;
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}
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/// isUIntOperand - Return true if the ith operand is an unsigned integer.
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///
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static bool isUIntOperand(GlobalVariable *GV, unsigned i) {
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// Make sure the GlobalVariable has an initializer.
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if (!GV->hasInitializer()) return false;
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//===----------------------------------------------------------------------===//
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DebugInfoWrapper::DebugInfoWrapper(GlobalVariable *G)
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: GV(G)
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, IC(dyn_cast<ConstantStruct>(GV->getInitializer())) {
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assert(IC && "llvm.db.global is missing structured constant");
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}
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// Get the initializer constant.
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ConstantStruct *CI = dyn_cast<ConstantStruct>(GV->getInitializer());
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if (!CI) return false;
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//===----------------------------------------------------------------------===//
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// Check if there is at least i + 1 operands.
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unsigned N = CI->getNumOperands();
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if (i >= N) return false;
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CompileUnitWrapper::CompileUnitWrapper(GlobalVariable *G)
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: DebugInfoWrapper(G)
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{
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// FIXME - should probably ease up on the number of operands (version.)
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assert(IC->getNumOperands() == N_op &&
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"Compile unit does not have correct number of operands");
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}
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/// getTag - Return the compile unit's tag number. Currently should be
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/// DW_TAG_variable.
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unsigned CompileUnitWrapper::getTag() const {
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return cast<ConstantUInt>(IC->getOperand(Tag_op))->getValue();
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}
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/// isCorrectDebugVersion - Return true if is the correct llvm debug version.
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/// Currently the value is 0 (zero.) If the value is is not correct then
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/// ignore all debug information.
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bool CompileUnitWrapper::isCorrectDebugVersion() const {
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return cast<ConstantUInt>(IC->getOperand(Version_op))->getValue() == 0;
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}
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/// getLanguage - Return the compile unit's language number (ex. DW_LANG_C89.)
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///
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unsigned CompileUnitWrapper::getLanguage() const {
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return cast<ConstantUInt>(IC->getOperand(Language_op))->getValue();
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}
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/// getFileName - Return the compile unit's file name.
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///
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const std::string CompileUnitWrapper::getFileName() const {
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return getStringValue(IC->getOperand(FileName_op));
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}
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/// getDirectory - Return the compile unit's file directory.
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///
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const std::string CompileUnitWrapper::getDirectory() const {
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return getStringValue(IC->getOperand(Directory_op));
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}
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/// getProducer - Return the compile unit's generator name.
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///
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const std::string CompileUnitWrapper::getProducer() const {
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return getStringValue(IC->getOperand(Producer_op));
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// Check constant.
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return isa<ConstantUInt>(CI->getOperand(i));
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}
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//===----------------------------------------------------------------------===//
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GlobalWrapper::GlobalWrapper(GlobalVariable *G)
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: DebugInfoWrapper(G)
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{
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// FIXME - should probably ease up on the number of operands (version.)
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assert(IC->getNumOperands() == N_op &&
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"Global does not have correct number of operands");
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/// TagFromGlobal - Returns the Tag number from a debug info descriptor
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/// GlobalVariable.
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unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV, bool Checking) {
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if (Checking && !isUIntOperand(GV, 0)) return DIInvalid;
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ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
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Constant *C = CI->getOperand(0);
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return cast<ConstantUInt>(C)->getValue();
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}
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/// getTag - Return the global's tag number. Currently should be
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/// DW_TAG_variable or DW_TAG_subprogram.
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unsigned GlobalWrapper::getTag() const {
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return cast<ConstantUInt>(IC->getOperand(Tag_op))->getValue();
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/// DescFactory - Create an instance of debug info descriptor based on Tag.
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/// Return NULL if not a recognized Tag.
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DebugInfoDesc *DebugInfoDesc::DescFactory(unsigned Tag) {
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switch (Tag) {
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case DI_TAG_compile_unit: return new CompileUnitDesc();
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case DI_TAG_global_variable: return new GlobalVariableDesc();
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case DI_TAG_subprogram: return new SubprogramDesc();
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default: break;
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}
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return NULL;
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}
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/// getContext - Return the "lldb.compile_unit" context global.
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//===----------------------------------------------------------------------===//
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/// ApplyToFields - Target the manager to each field of the debug information
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/// descriptor.
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void DIApplyManager::ApplyToFields(DebugInfoDesc *DD) {
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DD->ApplyToFields(this);
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}
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//===----------------------------------------------------------------------===//
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/// DICountAppMgr - This DIApplyManager counts all the fields in the supplied
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/// debug the supplied DebugInfoDesc.
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class DICountAppMgr : public DIApplyManager {
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private:
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unsigned Count; // Running count of fields.
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public:
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DICountAppMgr() : DIApplyManager(), Count(1) {}
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// Accessors.
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unsigned getCount() const { return Count; }
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/// Apply - Count each of the fields.
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///
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virtual void Apply(int &Field) { ++Count; }
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virtual void Apply(unsigned &Field) { ++Count; }
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virtual void Apply(bool &Field) { ++Count; }
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virtual void Apply(std::string &Field) { ++Count; }
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virtual void Apply(DebugInfoDesc *&Field) { ++Count; }
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virtual void Apply(GlobalVariable *&Field) { ++Count; }
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};
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//===----------------------------------------------------------------------===//
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/// DIDeserializeAppMgr - This DIApplyManager deserializes all the fields in
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/// the supplied DebugInfoDesc.
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class DIDeserializeAppMgr : public DIApplyManager {
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private:
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DIDeserializer &DR; // Active deserializer.
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unsigned I; // Current operand index.
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ConstantStruct *CI; // GlobalVariable constant initializer.
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public:
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DIDeserializeAppMgr(DIDeserializer &D, GlobalVariable *GV)
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: DIApplyManager()
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, DR(D)
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, I(1)
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, CI(cast<ConstantStruct>(GV->getInitializer()))
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{}
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/// Apply - Set the value of each of the fields.
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///
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virtual void Apply(int &Field) {
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Constant *C = CI->getOperand(I++);
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Field = cast<ConstantSInt>(C)->getValue();
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}
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virtual void Apply(unsigned &Field) {
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Constant *C = CI->getOperand(I++);
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Field = cast<ConstantUInt>(C)->getValue();
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}
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virtual void Apply(bool &Field) {
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Constant *C = CI->getOperand(I++);
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Field = cast<ConstantBool>(C)->getValue();
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}
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virtual void Apply(std::string &Field) {
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Constant *C = CI->getOperand(I++);
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Field = getStringValue(C);
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}
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virtual void Apply(DebugInfoDesc *&Field) {
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Constant *C = CI->getOperand(I++);
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Field = DR.Deserialize(C);
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}
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virtual void Apply(GlobalVariable *&Field) {
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Constant *C = CI->getOperand(I++);
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Field = getGlobalValue(C);
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}
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};
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//===----------------------------------------------------------------------===//
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/// DISerializeAppMgr - This DIApplyManager serializes all the fields in
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/// the supplied DebugInfoDesc.
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class DISerializeAppMgr : public DIApplyManager {
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private:
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DISerializer &SR; // Active serializer.
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std::vector<Constant*> &Elements; // Element accumulator.
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public:
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DISerializeAppMgr(DISerializer &S, std::vector<Constant*> &E)
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: DIApplyManager()
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, SR(S)
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, Elements(E)
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{}
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/// Apply - Set the value of each of the fields.
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///
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virtual void Apply(int &Field) {
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Elements.push_back(ConstantUInt::get(Type::IntTy, Field));
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}
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virtual void Apply(unsigned &Field) {
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Elements.push_back(ConstantUInt::get(Type::UIntTy, Field));
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}
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virtual void Apply(bool &Field) {
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Elements.push_back(ConstantBool::get(Field));
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}
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virtual void Apply(std::string &Field) {
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Elements.push_back(SR.getString(Field));
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}
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virtual void Apply(DebugInfoDesc *&Field) {
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GlobalVariable *GV = NULL;
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// If non-NULL the convert to global.
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if (Field) GV = SR.Serialize(Field);
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// FIXME - At some point should use specific type.
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const PointerType *EmptyTy = SR.getEmptyStructPtrType();
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if (GV) {
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// Set to pointer to global.
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Elements.push_back(ConstantExpr::getCast(GV, EmptyTy));
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} else {
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// Use NULL.
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Elements.push_back(ConstantPointerNull::get(EmptyTy));
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}
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}
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virtual void Apply(GlobalVariable *&Field) {
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const PointerType *EmptyTy = SR.getEmptyStructPtrType();
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Elements.push_back(ConstantExpr::getCast(Field, EmptyTy));
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}
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};
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//===----------------------------------------------------------------------===//
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/// DIGetTypesAppMgr - This DIApplyManager gathers all the field types in
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/// the supplied DebugInfoDesc.
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class DIGetTypesAppMgr : public DIApplyManager {
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private:
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DISerializer &SR; // Active serializer.
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std::vector<const Type*> &Fields; // Type accumulator.
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public:
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DIGetTypesAppMgr(DISerializer &S, std::vector<const Type*> &F)
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: DIApplyManager()
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, SR(S)
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, Fields(F)
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{}
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/// Apply - Set the value of each of the fields.
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///
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virtual void Apply(int &Field) {
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Fields.push_back(Type::IntTy);
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}
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virtual void Apply(unsigned &Field) {
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Fields.push_back(Type::UIntTy);
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}
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virtual void Apply(bool &Field) {
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Fields.push_back(Type::BoolTy);
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}
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virtual void Apply(std::string &Field) {
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Fields.push_back(SR.getStrPtrType());
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}
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virtual void Apply(DebugInfoDesc *&Field) {
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// FIXME - At some point should use specific type.
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const PointerType *EmptyTy = SR.getEmptyStructPtrType();
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Fields.push_back(EmptyTy);
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}
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virtual void Apply(GlobalVariable *&Field) {
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const PointerType *EmptyTy = SR.getEmptyStructPtrType();
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Fields.push_back(EmptyTy);
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}
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};
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//===----------------------------------------------------------------------===//
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/// DIVerifyAppMgr - This DIApplyManager verifies all the field types against
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/// a constant initializer.
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class DIVerifyAppMgr : public DIApplyManager {
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private:
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DIVerifier &VR; // Active verifier.
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bool IsValid; // Validity status.
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unsigned I; // Current operand index.
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ConstantStruct *CI; // GlobalVariable constant initializer.
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public:
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DIVerifyAppMgr(DIVerifier &V, GlobalVariable *GV)
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: DIApplyManager()
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, VR(V)
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, IsValid(true)
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, I(1)
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, CI(cast<ConstantStruct>(GV->getInitializer()))
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{
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}
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// Accessors.
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bool isValid() const { return IsValid; }
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/// Apply - Set the value of each of the fields.
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///
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virtual void Apply(int &Field) {
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Constant *C = CI->getOperand(I++);
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IsValid = IsValid && isa<ConstantInt>(C);
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}
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virtual void Apply(unsigned &Field) {
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||||
Constant *C = CI->getOperand(I++);
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||||
IsValid = IsValid && isa<ConstantInt>(C);
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}
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||||
virtual void Apply(bool &Field) {
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||||
Constant *C = CI->getOperand(I++);
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||||
IsValid = IsValid && isa<ConstantBool>(C);
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||||
}
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||||
virtual void Apply(std::string &Field) {
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||||
Constant *C = CI->getOperand(I++);
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||||
IsValid = IsValid && isStringValue(C);
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}
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||||
virtual void Apply(DebugInfoDesc *&Field) {
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// FIXME - Prepare the correct descriptor.
|
||||
Constant *C = CI->getOperand(I++);
|
||||
IsValid = IsValid && isGlobalValue(C);
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||||
}
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||||
virtual void Apply(GlobalVariable *&Field) {
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||||
Constant *C = CI->getOperand(I++);
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||||
IsValid = IsValid && isGlobalValue(C);
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||||
}
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||||
};
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||||
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||||
//===----------------------------------------------------------------------===//
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||||
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/// DebugVersionFromGlobal - Returns the version number from a compile unit
|
||||
/// GlobalVariable.
|
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unsigned CompileUnitDesc::DebugVersionFromGlobal(GlobalVariable *GV,
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||||
bool Checking) {
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if (Checking && !isUIntOperand(GV, 1)) return DIInvalid;
|
||||
ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
|
||||
Constant *C = CI->getOperand(1);
|
||||
return cast<ConstantUInt>(C)->getValue();
|
||||
}
|
||||
|
||||
/// ApplyToFields - Target the apply manager to the fields of the
|
||||
/// CompileUnitDesc.
|
||||
void CompileUnitDesc::ApplyToFields(DIApplyManager *Mgr) {
|
||||
Mgr->Apply(DebugVersion);
|
||||
Mgr->Apply(Language);
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||||
Mgr->Apply(FileName);
|
||||
Mgr->Apply(Directory);
|
||||
Mgr->Apply(Producer);
|
||||
Mgr->Apply(TransUnit);
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||||
}
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||||
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||||
/// TypeString - Return a string used to compose globalnames and labels.
|
||||
///
|
||||
GlobalVariable *GlobalWrapper::getContext() const {
|
||||
return getGlobalValue(IC->getOperand(Context_op));
|
||||
const char *CompileUnitDesc::TypeString() const {
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||||
return "compile_unit";
|
||||
}
|
||||
|
||||
/// getName - Return the name of the global.
|
||||
///
|
||||
const std::string GlobalWrapper::getName() const {
|
||||
return getStringValue(IC->getOperand(Name_op));
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||||
#ifndef NDEBUG
|
||||
void CompileUnitDesc::dump() {
|
||||
std::cerr << TypeString() << " "
|
||||
<< "Tag(" << getTag() << "), "
|
||||
<< "Language(" << Language << "), "
|
||||
<< "FileName(\"" << FileName << "\"), "
|
||||
<< "Directory(\"" << Directory << "\"), "
|
||||
<< "Producer(\"" << Producer << "\")\n";
|
||||
}
|
||||
#endif
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
/// ApplyToFields - Target the apply manager to the fields of the
|
||||
/// GlobalVariableDesc.
|
||||
void GlobalVariableDesc::ApplyToFields(DIApplyManager *Mgr) {
|
||||
Mgr->Apply(Context);
|
||||
Mgr->Apply(Name);
|
||||
Mgr->Apply(TransUnit);
|
||||
Mgr->Apply(TyDesc);
|
||||
Mgr->Apply(IsStatic);
|
||||
Mgr->Apply(IsDefinition);
|
||||
Mgr->Apply(Global);
|
||||
}
|
||||
|
||||
/// getType - Return the type of the global.
|
||||
/// TypeString - Return a string used to compose globalnames and labels.
|
||||
///
|
||||
const GlobalVariable *GlobalWrapper::getType() const {
|
||||
return getGlobalValue(IC->getOperand(Type_op));
|
||||
const char *GlobalVariableDesc::TypeString() const {
|
||||
return "global_variable";
|
||||
}
|
||||
|
||||
/// isStatic - Return true if the global is static.
|
||||
///
|
||||
bool GlobalWrapper::isStatic() const {
|
||||
return cast<ConstantBool>(IC->getOperand(Static_op))->getValue();
|
||||
#ifndef NDEBUG
|
||||
void GlobalVariableDesc::dump() {
|
||||
std::cerr << TypeString() << " "
|
||||
<< "Tag(" << getTag() << "), "
|
||||
<< "Name(\"" << Name << "\"), "
|
||||
<< "Type(" << TyDesc << "), "
|
||||
<< "IsStatic(" << (IsStatic ? "true" : "false") << "), "
|
||||
<< "IsDefinition(" << (IsDefinition ? "true" : "false") << "), "
|
||||
<< "Global(" << Global << ")\n";
|
||||
}
|
||||
#endif
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
/// ApplyToFields - Target the apply manager to the fields of the
|
||||
/// SubprogramDesc.
|
||||
void SubprogramDesc::ApplyToFields(DIApplyManager *Mgr) {
|
||||
Mgr->Apply(Context);
|
||||
Mgr->Apply(Name);
|
||||
Mgr->Apply(TransUnit);
|
||||
Mgr->Apply(TyDesc);
|
||||
Mgr->Apply(IsStatic);
|
||||
Mgr->Apply(IsDefinition);
|
||||
|
||||
// FIXME - Temp variable until restructured.
|
||||
GlobalVariable *Tmp;
|
||||
Mgr->Apply(Tmp);
|
||||
}
|
||||
|
||||
/// isDefinition - Return true if the global is a definition.
|
||||
/// TypeString - Return a string used to compose globalnames and labels.
|
||||
///
|
||||
bool GlobalWrapper::isDefinition() const {
|
||||
return dyn_cast<ConstantBool>(IC->getOperand(Definition_op))->getValue();
|
||||
const char *SubprogramDesc::TypeString() const {
|
||||
return "subprogram";
|
||||
}
|
||||
|
||||
/// getGlobalVariable - Return the global variable (tag == DW_TAG_variable.)
|
||||
#ifndef NDEBUG
|
||||
void SubprogramDesc::dump() {
|
||||
std::cerr << TypeString() << " "
|
||||
<< "Tag(" << getTag() << "), "
|
||||
<< "Name(\"" << Name << "\"), "
|
||||
<< "Type(" << TyDesc << "), "
|
||||
<< "IsStatic(" << (IsStatic ? "true" : "false") << "), "
|
||||
<< "IsDefinition(" << (IsDefinition ? "true" : "false") << ")\n";
|
||||
}
|
||||
#endif
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
DebugInfoDesc *DIDeserializer::Deserialize(Value *V) {
|
||||
return Deserialize(cast<GlobalVariable>(V));
|
||||
}
|
||||
DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
|
||||
// Check to see if it has been already deserialized.
|
||||
DebugInfoDesc *&Slot = GlobalDescs[GV];
|
||||
if (Slot) return Slot;
|
||||
|
||||
// Get the Tag from the global.
|
||||
unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
|
||||
|
||||
// Get the debug version if a compile unit.
|
||||
if (Tag == DI_TAG_compile_unit) {
|
||||
DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
|
||||
}
|
||||
|
||||
// Create an empty instance of the correct sort.
|
||||
Slot = DebugInfoDesc::DescFactory(Tag);
|
||||
assert(Slot && "Unknown Tag");
|
||||
|
||||
// Deserialize the fields.
|
||||
DIDeserializeAppMgr DRAM(*this, GV);
|
||||
DRAM.ApplyToFields(Slot);
|
||||
|
||||
return Slot;
|
||||
}
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
/// getStrPtrType - Return a "sbyte *" type.
|
||||
///
|
||||
GlobalVariable *GlobalWrapper::getGlobalVariable() const {
|
||||
return getGlobalValue(IC->getOperand(GlobalVariable_op));
|
||||
const PointerType *DISerializer::getStrPtrType() {
|
||||
// If not already defined.
|
||||
if (!StrPtrTy) {
|
||||
// Construct the pointer to signed bytes.
|
||||
StrPtrTy = PointerType::get(Type::SByteTy);
|
||||
}
|
||||
|
||||
return StrPtrTy;
|
||||
}
|
||||
|
||||
/// getEmptyStructPtrType - Return a "{ }*" type.
|
||||
///
|
||||
const PointerType *DISerializer::getEmptyStructPtrType() {
|
||||
// If not already defined.
|
||||
if (!EmptyStructPtrTy) {
|
||||
// Construct the empty structure type.
|
||||
const StructType *EmptyStructTy =
|
||||
StructType::get(std::vector<const Type*>());
|
||||
// Construct the pointer to empty structure type.
|
||||
EmptyStructPtrTy = PointerType::get(EmptyStructTy);
|
||||
}
|
||||
|
||||
return EmptyStructPtrTy;
|
||||
}
|
||||
|
||||
/// getTagType - Return the type describing the specified descriptor (via tag.)
|
||||
///
|
||||
const StructType *DISerializer::getTagType(DebugInfoDesc *DD) {
|
||||
// Attempt to get the previously defined type.
|
||||
StructType *&Ty = TagTypes[DD->getTag()];
|
||||
|
||||
// If not already defined.
|
||||
if (!Ty) {
|
||||
// Get descriptor type name.
|
||||
const char *TS = DD->TypeString();
|
||||
|
||||
// Set up fields vector.
|
||||
std::vector<const Type*> Fields;
|
||||
// Add tag field.
|
||||
Fields.push_back(Type::UIntTy);
|
||||
// Get types of remaining fields.
|
||||
DIGetTypesAppMgr GTAM(*this, Fields);
|
||||
GTAM.ApplyToFields(DD);
|
||||
|
||||
// Construct structured type.
|
||||
Ty = StructType::get(Fields);
|
||||
|
||||
// Construct a name for the type.
|
||||
const std::string Name = std::string("lldb.") + DD->TypeString() + ".type";
|
||||
|
||||
// Register type name with module.
|
||||
M->addTypeName(Name, Ty);
|
||||
}
|
||||
|
||||
return Ty;
|
||||
}
|
||||
|
||||
/// getString - Construct the string as constant string global.
|
||||
///
|
||||
GlobalVariable *DISerializer::getString(const std::string &String) {
|
||||
// Check string cache for previous edition.
|
||||
GlobalVariable *&Slot = StringCache[String];
|
||||
// return GlobalVariable if previously defined.
|
||||
if (Slot) return Slot;
|
||||
// Construct strings as an llvm constant.
|
||||
Constant *ConstStr = ConstantArray::get(String);
|
||||
// Otherwise create and return a new string global.
|
||||
return Slot = new GlobalVariable(ConstStr->getType(), true,
|
||||
GlobalVariable::InternalLinkage,
|
||||
ConstStr, "str", M);
|
||||
}
|
||||
|
||||
/// Serialize - Recursively cast the specified descriptor into a GlobalVariable
|
||||
/// so that it can be serialized to a .bc or .ll file.
|
||||
GlobalVariable *DISerializer::Serialize(DebugInfoDesc *DD) {
|
||||
// Check if the DebugInfoDesc is already in the map.
|
||||
GlobalVariable *&Slot = DescGlobals[DD];
|
||||
|
||||
// See if DebugInfoDesc exists, if so return prior GlobalVariable.
|
||||
if (Slot) return Slot;
|
||||
|
||||
// Get DebugInfoDesc type Tag.
|
||||
unsigned Tag = DD->getTag();
|
||||
|
||||
// Construct name.
|
||||
const std::string Name = std::string("lldb.") +
|
||||
DD->TypeString();
|
||||
|
||||
// Get the type associated with the Tag.
|
||||
const StructType *Ty = getTagType(DD);
|
||||
|
||||
// Create the GlobalVariable early to prevent infinite recursion.
|
||||
GlobalVariable *GV = new GlobalVariable(Ty, true,
|
||||
GlobalValue::InternalLinkage,
|
||||
NULL, Name, M);
|
||||
|
||||
// Insert new GlobalVariable in DescGlobals map.
|
||||
Slot = GV;
|
||||
|
||||
// Set up elements vector
|
||||
std::vector<Constant*> Elements;
|
||||
// Add Tag value.
|
||||
Elements.push_back(ConstantUInt::get(Type::UIntTy, Tag));
|
||||
// Add remaining fields.
|
||||
DISerializeAppMgr SRAM(*this, Elements);
|
||||
SRAM.ApplyToFields(DD);
|
||||
|
||||
// Set the globals initializer.
|
||||
GV->setInitializer(ConstantStruct::get(Ty, Elements));
|
||||
|
||||
return GV;
|
||||
}
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
/// markVisited - Return true if the GlobalVariable hase been "seen" before.
|
||||
/// Mark visited otherwise.
|
||||
bool DIVerifier::markVisited(GlobalVariable *GV) {
|
||||
// Check if the GlobalVariable is already in the Visited set.
|
||||
std::set<GlobalVariable *>::iterator VI = Visited.lower_bound(GV);
|
||||
|
||||
// See if GlobalVariable exists.
|
||||
bool Exists = VI != Visited.end() && *VI == GV;
|
||||
|
||||
// Insert in set.
|
||||
if (!Exists) Visited.insert(VI, GV);
|
||||
|
||||
return Exists;
|
||||
}
|
||||
|
||||
/// Verify - Return true if the GlobalVariable appears to be a valid
|
||||
/// serialization of a DebugInfoDesc.
|
||||
bool DIVerifier::Verify(GlobalVariable *GV) {
|
||||
// Check if seen before.
|
||||
if (markVisited(GV)) return true;
|
||||
|
||||
// Get the Tag
|
||||
unsigned Tag = DebugInfoDesc::TagFromGlobal(GV, true);
|
||||
if (Tag == DIInvalid) return false;
|
||||
|
||||
// If a compile unit we need the debug version.
|
||||
if (Tag == DI_TAG_compile_unit) {
|
||||
DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV, true);
|
||||
if (DebugVersion == DIInvalid) return false;
|
||||
}
|
||||
|
||||
// Construct an empty DebugInfoDesc.
|
||||
DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
|
||||
if (!DD) return false;
|
||||
|
||||
// Get the initializer constant.
|
||||
ConstantStruct *CI = cast<ConstantStruct>(GV->getInitializer());
|
||||
|
||||
// Get the operand count.
|
||||
unsigned N = CI->getNumOperands();
|
||||
|
||||
// Get the field count.
|
||||
unsigned &Slot = Counts[Tag];
|
||||
if (!Slot) {
|
||||
// Check the operand count to the field count
|
||||
DICountAppMgr CTAM;
|
||||
CTAM.ApplyToFields(DD);
|
||||
Slot = CTAM.getCount();
|
||||
}
|
||||
|
||||
// Field count must equal operand count.
|
||||
if (Slot != N) {
|
||||
delete DD;
|
||||
return false;
|
||||
}
|
||||
|
||||
// Check each field for valid type.
|
||||
DIVerifyAppMgr VRAM(*this, GV);
|
||||
VRAM.ApplyToFields(DD);
|
||||
|
||||
// Release empty DebugInfoDesc.
|
||||
delete DD;
|
||||
|
||||
// Return result of field tests.
|
||||
return VRAM.isValid();
|
||||
}
|
||||
|
||||
//===----------------------------------------------------------------------===//
|
||||
|
||||
|
||||
MachineDebugInfo::MachineDebugInfo()
|
||||
: CompileUnits()
|
||||
: SR()
|
||||
, DR()
|
||||
, VR()
|
||||
, CompileUnits()
|
||||
, Directories()
|
||||
, SourceFiles()
|
||||
, Lines()
|
||||
@@ -248,54 +766,56 @@ bool MachineDebugInfo::doFinalization() {
|
||||
/// AnalyzeModule - Scan the module for global debug information.
|
||||
///
|
||||
void MachineDebugInfo::AnalyzeModule(Module &M) {
|
||||
SR.setModule(&M);
|
||||
DR.setModule(&M);
|
||||
SetupCompileUnits(M);
|
||||
}
|
||||
|
||||
/// SetupCompileUnits - Set up the unique vector of compile units.
|
||||
///
|
||||
void MachineDebugInfo::SetupCompileUnits(Module &M) {
|
||||
SR.setModule(&M);
|
||||
DR.setModule(&M);
|
||||
// Get vector of all debug compile units.
|
||||
std::vector<GlobalVariable*> Globals =
|
||||
getGlobalVariablesUsing(M, "llvm.dbg.translation_units");
|
||||
|
||||
// Scan all compile unit globals.
|
||||
for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
|
||||
// Create wrapper for compile unit.
|
||||
CompileUnitWrapper CUI(Globals[i]);
|
||||
// Add to result.
|
||||
if (CUI.isCorrectDebugVersion()) CompileUnits.insert(CUI);
|
||||
// Add compile unit to result.
|
||||
CompileUnits.insert(
|
||||
static_cast<CompileUnitDesc *>(DR.Deserialize(Globals[i])));
|
||||
}
|
||||
|
||||
// If there any bad compile units then suppress debug information
|
||||
if (CompileUnits.size() != Globals.size()) CompileUnits.reset();
|
||||
}
|
||||
|
||||
/// getCompileUnits - Return a vector of debug compile units.
|
||||
///
|
||||
const UniqueVector<CompileUnitWrapper> MachineDebugInfo::getCompileUnits()const{
|
||||
const UniqueVector<CompileUnitDesc *> MachineDebugInfo::getCompileUnits()const{
|
||||
return CompileUnits;
|
||||
}
|
||||
|
||||
/// getGlobalVariables - Return a vector of debug global variables.
|
||||
/// getGlobalVariables - Return a vector of debug GlobalVariables.
|
||||
///
|
||||
std::vector<GlobalWrapper> MachineDebugInfo::getGlobalVariables(Module &M) {
|
||||
std::vector<GlobalVariableDesc *>
|
||||
MachineDebugInfo::getGlobalVariables(Module &M) {
|
||||
SR.setModule(&M);
|
||||
DR.setModule(&M);
|
||||
// Get vector of all debug global objects.
|
||||
std::vector<GlobalVariable*> Globals =
|
||||
getGlobalVariablesUsing(M, "llvm.dbg.globals");
|
||||
|
||||
// Accumulation of global variables.
|
||||
std::vector<GlobalWrapper> GlobalVariables;
|
||||
// Accumulation of GlobalVariables.
|
||||
std::vector<GlobalVariableDesc *> GlobalVariables;
|
||||
|
||||
// FIXME - skip until globals have new format
|
||||
#if 0
|
||||
// Scan all globals.
|
||||
for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
|
||||
// Create wrapper for global.
|
||||
GlobalWrapper GW(Globals[i]);
|
||||
// If the global is a variable then add to result.
|
||||
if (GW.getTag() == DW_TAG_variable) GlobalVariables.push_back(GW);
|
||||
GlobalVariable *GV = Globals[i];
|
||||
if (DebugInfoDesc::TagFromGlobal(GV, true) == DI_TAG_global_variable) {
|
||||
GlobalVariableDesc *GVD =
|
||||
static_cast<GlobalVariableDesc *>(DR.Deserialize(GV));
|
||||
GlobalVariables.push_back(GVD);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return GlobalVariables;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user