#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StackFrame.h"
+#include "lldb/Target/StackID.h"
using namespace lldb;
using namespace lldb_private;
case DW_OP_stack_value:
stack.back().SetValueType(Value::eValueTypeScalar);
break;
+
+ //----------------------------------------------------------------------
+ // OPCODE: DW_OP_call_frame_cfa
+ // OPERANDS: None
+ // DESCRIPTION: Specifies a DWARF expression that pushes the value of
+ // the canonical frame address consistent with the call frame information
+ // located in .debug_frame (or in the FDEs of the eh_frame section).
+ //----------------------------------------------------------------------
+ case DW_OP_call_frame_cfa:
+ if (frame)
+ {
+ // Note that we don't have to parse FDEs because this DWARF expression
+ // is commonly evaluated with a valid stack frame.
+ StackID id = frame->GetStackID();
+ addr_t cfa = id.GetCallFrameAddress();
+ if (cfa != LLDB_INVALID_ADDRESS)
+ {
+ stack.push_back(Scalar(cfa));
+ stack.back().SetValueType (Value::eValueTypeHostAddress);
+ }
+ else
+ if (error_ptr)
+ error_ptr->SetErrorString ("Stack frame does not include a canonical frame address for DW_OP_call_frame_cfa opcode.");
+ }
+ else
+ {
+ if (error_ptr)
+ error_ptr->SetErrorString ("Invalid stack frame in context for DW_OP_call_frame_cfa opcode.");
+ return false;
+ }
+ break;
}
}
// cie.offset = cie_offset;
// cie.length = length;
// cie.cieID = cieID;
- cie_sp->ptr_encoding = DW_EH_PE_absptr;
+ cie_sp->ptr_encoding = DW_EH_PE_absptr; // default
cie_sp->version = m_cfi_data.GetU8(&offset);
for (i=0; i<CFI_AUG_MAX_SIZE; ++i)
// Data shall include a 1 byte argument that
// represents the pointer encoding for the address
// pointers used in the FDE.
+ // Example: 0x1B == DW_EH_PE_pcrel | DW_EH_PE_sdata4
cie_sp->ptr_encoding = m_cfi_data.GetU8(&offset);
break;
}