Moved the implementation of ExpressionEvaluationContext. No functional changed.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31632 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
@@ -25,6 +25,125 @@
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#include "Variant.h"
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// #pragma mark - ExpressionEvaluationContext
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struct DwarfFile::ExpressionEvaluationContext
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: DwarfExpressionEvaluationContext {
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public:
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ExpressionEvaluationContext(DwarfFile* file, CompilationUnit* unit,
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DIESubprogram* subprogramEntry,
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const DwarfTargetInterface* targetInterface,
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target_addr_t instructionPointer, target_addr_t objectPointer,
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target_addr_t framePointer)
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:
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DwarfExpressionEvaluationContext(targetInterface, unit->AddressSize()),
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fFile(file),
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fUnit(unit),
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fSubprogramEntry(subprogramEntry),
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fInstructionPointer(instructionPointer),
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fObjectPointer(objectPointer),
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fFramePointer(framePointer),
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fFrameBasePointer(0),
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fFrameBaseEvaluated(false)
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{
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}
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virtual bool GetObjectAddress(target_addr_t& _address)
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{
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if (fObjectPointer == 0)
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return false;
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_address = fObjectPointer;
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return true;
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}
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virtual bool GetFrameAddress(target_addr_t& _address)
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{
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_address = fFramePointer;
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return true;
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}
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virtual bool GetFrameBaseAddress(target_addr_t& _address)
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{
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if (fFrameBaseEvaluated) {
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if (fFrameBasePointer == 0)
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return false;
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_address = fFrameBasePointer;
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return true;
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}
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// set flag already to prevent recursion for a buggy expression
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fFrameBaseEvaluated = true;
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// get the subprogram's frame base location
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const LocationDescription* location = fSubprogramEntry->FrameBase();
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if (!location->IsValid())
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return B_BAD_VALUE;
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// get the expression
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const void* expression;
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off_t expressionLength;
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status_t error = fFile->_GetLocationExpression(fUnit, location,
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fInstructionPointer, expression, expressionLength);
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if (error != B_OK)
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return error;
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// evaluate the expression
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DwarfExpressionEvaluator evaluator(this);
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error = evaluator.Evaluate(expression, expressionLength,
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fFrameBasePointer);
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if (error != B_OK)
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return false;
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printf(" -> frame base: %llx\n", fFrameBasePointer);
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_address = fFrameBasePointer;
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return true;
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}
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virtual bool GetTLSAddress(target_addr_t localAddress,
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target_addr_t& _address)
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{
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// TODO:...
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return false;
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}
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virtual status_t GetCallTarget(uint64 offset, bool local,
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const void*& _block, off_t& _size)
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{
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// resolve the entry
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DebugInfoEntry* entry = fFile->_ResolveReference(fUnit, offset, local);
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if (entry == NULL)
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return B_ENTRY_NOT_FOUND;
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// get the location description
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LocationDescription* location = entry->GetLocationDescription();
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if (location == NULL || !location->IsValid()) {
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_block = NULL;
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_size = 0;
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return B_OK;
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}
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// get the expression
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return fFile->_GetLocationExpression(fUnit, location,
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fInstructionPointer, _block, _size);
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}
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private:
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DwarfFile* fFile;
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CompilationUnit* fUnit;
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DIESubprogram* fSubprogramEntry;
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target_addr_t fInstructionPointer;
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target_addr_t fObjectPointer;
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target_addr_t fFramePointer;
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target_addr_t fFrameBasePointer;
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bool fFrameBaseEvaluated;
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};
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// #pragma mark - DwarfFile
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DwarfFile::DwarfFile()
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:
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fName(NULL),
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@@ -483,119 +602,6 @@ printf(" -> CFA_RULE_UNDEFINED\n");
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}
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struct DwarfFile::ExpressionEvaluationContext
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: DwarfExpressionEvaluationContext {
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public:
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ExpressionEvaluationContext(DwarfFile* file, CompilationUnit* unit,
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DIESubprogram* subprogramEntry,
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const DwarfTargetInterface* targetInterface,
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target_addr_t instructionPointer, target_addr_t objectPointer,
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target_addr_t framePointer)
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:
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DwarfExpressionEvaluationContext(targetInterface, unit->AddressSize()),
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fFile(file),
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fUnit(unit),
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fSubprogramEntry(subprogramEntry),
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fInstructionPointer(instructionPointer),
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fObjectPointer(objectPointer),
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fFramePointer(framePointer),
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fFrameBasePointer(0),
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fFrameBaseEvaluated(false)
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{
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}
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virtual bool GetObjectAddress(target_addr_t& _address)
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{
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if (fObjectPointer == 0)
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return false;
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_address = fObjectPointer;
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return true;
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}
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virtual bool GetFrameAddress(target_addr_t& _address)
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{
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_address = fFramePointer;
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return true;
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}
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virtual bool GetFrameBaseAddress(target_addr_t& _address)
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{
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if (fFrameBaseEvaluated) {
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if (fFrameBasePointer == 0)
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return false;
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_address = fFrameBasePointer;
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return true;
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}
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// set flag already to prevent recursion for a buggy expression
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fFrameBaseEvaluated = true;
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// get the subprogram's frame base location
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const LocationDescription* location = fSubprogramEntry->FrameBase();
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if (!location->IsValid())
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return B_BAD_VALUE;
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// get the expression
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const void* expression;
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off_t expressionLength;
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status_t error = fFile->_GetLocationExpression(fUnit, location,
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fInstructionPointer, expression, expressionLength);
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if (error != B_OK)
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return error;
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// evaluate the expression
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DwarfExpressionEvaluator evaluator(this);
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error = evaluator.Evaluate(expression, expressionLength,
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fFrameBasePointer);
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if (error != B_OK)
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return false;
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printf(" -> frame base: %llx\n", fFrameBasePointer);
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_address = fFrameBasePointer;
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return true;
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}
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virtual bool GetTLSAddress(target_addr_t localAddress,
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target_addr_t& _address)
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{
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// TODO:...
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return false;
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}
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virtual status_t GetCallTarget(uint64 offset, bool local,
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const void*& _block, off_t& _size)
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{
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// resolve the entry
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DebugInfoEntry* entry = fFile->_ResolveReference(fUnit, offset, local);
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if (entry == NULL)
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return B_ENTRY_NOT_FOUND;
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// get the location description
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LocationDescription* location = entry->GetLocationDescription();
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if (location == NULL || !location->IsValid()) {
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_block = NULL;
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_size = 0;
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return B_OK;
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}
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// get the expression
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return fFile->_GetLocationExpression(fUnit, location,
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fInstructionPointer, _block, _size);
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}
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private:
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DwarfFile* fFile;
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CompilationUnit* fUnit;
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DIESubprogram* fSubprogramEntry;
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target_addr_t fInstructionPointer;
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target_addr_t fObjectPointer;
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target_addr_t fFramePointer;
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target_addr_t fFrameBasePointer;
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bool fFrameBaseEvaluated;
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};
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status_t
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DwarfFile::EvaluateExpression(CompilationUnit* unit,
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DIESubprogram* subprogramEntry, const void* expression,
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