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b36f917854
Summary: Currently, the local-only path fails about 50% of the tests, which means that: a) nobody is using it; and b) the remote debugging path is much more stable. This commit removes the local-only linux debugging code (ProcessLinux) and makes remote-loopback the only way to debug local applications (the same architecture as OSX). The ProcessPOSIX code is moved to the FreeBSD directory, which is now the only user of this class. Hopefully, FreeBSD will soon move to the new architecture as well and then this code can be removed completely. Test Plan: Test suite passes via remote stub. Reviewers: emaste, vharron, ovyalov, clayborg Subscribers: tberghammer, emaste, lldb-commits Differential Revision: http://reviews.llvm.org/D10661 llvm-svn: 240543
323 lines
9.3 KiB
C++
323 lines
9.3 KiB
C++
//===-- RegisterContextPOSIXProcessMonitor_arm.cpp -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===---------------------------------------------------------------------===//
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#include "lldb/Core/DataBufferHeap.h"
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#include "lldb/Core/RegisterValue.h"
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#include "lldb/Target/Thread.h"
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#include "RegisterContextPOSIX_arm.h"
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#include "ProcessPOSIX.h"
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#include "RegisterContextPOSIXProcessMonitor_arm.h"
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#include "ProcessMonitor.h"
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using namespace lldb_private;
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using namespace lldb;
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#define REG_CONTEXT_SIZE (GetGPRSize())
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RegisterContextPOSIXProcessMonitor_arm::RegisterContextPOSIXProcessMonitor_arm(Thread &thread,
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uint32_t concrete_frame_idx,
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lldb_private::RegisterInfoInterface *register_info)
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: RegisterContextPOSIX_arm(thread, concrete_frame_idx, register_info)
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{
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}
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ProcessMonitor &
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RegisterContextPOSIXProcessMonitor_arm::GetMonitor()
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{
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ProcessSP base = CalculateProcess();
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ProcessPOSIX *process = static_cast<ProcessPOSIX*>(base.get());
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return process->GetMonitor();
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ReadGPR()
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{
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ProcessMonitor &monitor = GetMonitor();
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return monitor.ReadGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ReadFPR()
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{
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ProcessMonitor &monitor = GetMonitor();
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return monitor.ReadFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::WriteGPR()
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{
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ProcessMonitor &monitor = GetMonitor();
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return monitor.WriteGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::WriteFPR()
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{
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ProcessMonitor &monitor = GetMonitor();
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return monitor.WriteFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const unsigned reg,
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RegisterValue &value)
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{
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ProcessMonitor &monitor = GetMonitor();
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return monitor.ReadRegisterValue(m_thread.GetID(),
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GetRegisterOffset(reg),
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GetRegisterName(reg),
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GetRegisterSize(reg),
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value);
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const unsigned reg,
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const RegisterValue &value)
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{
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unsigned reg_to_write = reg;
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RegisterValue value_to_write = value;
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// Check if this is a subregister of a full register.
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const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg);
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if (reg_info->invalidate_regs && (reg_info->invalidate_regs[0] != LLDB_INVALID_REGNUM))
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{
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RegisterValue full_value;
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uint32_t full_reg = reg_info->invalidate_regs[0];
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const RegisterInfo *full_reg_info = GetRegisterInfoAtIndex(full_reg);
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// Read the full register.
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if (ReadRegister(full_reg_info, full_value))
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{
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Error error;
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ByteOrder byte_order = GetByteOrder();
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uint8_t dst[RegisterValue::kMaxRegisterByteSize];
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// Get the bytes for the full register.
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const uint32_t dest_size = full_value.GetAsMemoryData (full_reg_info,
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dst,
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sizeof(dst),
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byte_order,
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error);
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if (error.Success() && dest_size)
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{
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uint8_t src[RegisterValue::kMaxRegisterByteSize];
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// Get the bytes for the source data.
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const uint32_t src_size = value.GetAsMemoryData (reg_info, src, sizeof(src), byte_order, error);
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if (error.Success() && src_size && (src_size < dest_size))
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{
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// Copy the src bytes to the destination.
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memcpy (dst + (reg_info->byte_offset & 0x1), src, src_size);
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// Set this full register as the value to write.
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value_to_write.SetBytes(dst, full_value.GetByteSize(), byte_order);
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value_to_write.SetType(full_reg_info);
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reg_to_write = full_reg;
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}
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}
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}
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}
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ProcessMonitor &monitor = GetMonitor();
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return monitor.WriteRegisterValue(m_thread.GetID(),
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GetRegisterOffset(reg_to_write),
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GetRegisterName(reg_to_write),
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value_to_write);
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
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{
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if (!reg_info)
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return false;
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const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
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if (IsFPR(reg))
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{
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if (!ReadFPR())
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return false;
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}
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else
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{
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return ReadRegister(reg, value);
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}
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// Get pointer to m_fpr variable and set the data from it.
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assert (reg_info->byte_offset < sizeof m_fpr);
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uint8_t *src = (uint8_t *)&m_fpr + reg_info->byte_offset;
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switch (reg_info->byte_size)
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{
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case 2:
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value.SetUInt16(*(uint16_t *)src);
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return true;
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case 4:
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value.SetUInt32(*(uint32_t *)src);
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return true;
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case 8:
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value.SetUInt64(*(uint64_t *)src);
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return true;
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default:
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assert(false && "Unhandled data size.");
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return false;
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}
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
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{
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const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
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if (IsGPR(reg))
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{
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return WriteRegister(reg, value);
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}
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else if (IsFPR(reg))
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{
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return WriteFPR();
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}
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return false;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ReadAllRegisterValues(DataBufferSP &data_sp)
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{
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bool success = false;
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data_sp.reset (new DataBufferHeap (REG_CONTEXT_SIZE, 0));
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if (data_sp && ReadGPR () && ReadFPR ())
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{
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uint8_t *dst = data_sp->GetBytes();
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success = dst != 0;
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if (success)
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{
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::memcpy (dst, &m_gpr_arm, GetGPRSize());
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dst += GetGPRSize();
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::memcpy (dst, &m_fpr, sizeof(m_fpr));
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}
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}
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return success;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::WriteAllRegisterValues(const DataBufferSP &data_sp)
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{
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bool success = false;
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if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE)
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{
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uint8_t *src = data_sp->GetBytes();
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if (src)
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{
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::memcpy (&m_gpr_arm, src, GetGPRSize());
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if (WriteGPR())
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{
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src += GetGPRSize();
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::memcpy (&m_fpr, src, sizeof(m_fpr));
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success = WriteFPR();
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}
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}
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}
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return success;
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}
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uint32_t
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RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpoint(addr_t addr, size_t size,
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bool read, bool write)
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{
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const uint32_t num_hw_watchpoints = NumSupportedHardwareWatchpoints();
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uint32_t hw_index;
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for (hw_index = 0; hw_index < num_hw_watchpoints; ++hw_index)
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{
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if (IsWatchpointVacant(hw_index))
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return SetHardwareWatchpointWithIndex(addr, size,
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read, write,
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hw_index);
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}
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return LLDB_INVALID_INDEX32;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ClearHardwareWatchpoint(uint32_t hw_index)
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{
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return false;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::HardwareSingleStep(bool enable)
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{
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return false;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::UpdateAfterBreakpoint()
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{
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lldb::addr_t pc;
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if ((pc = GetPC()) == LLDB_INVALID_ADDRESS)
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return false;
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return true;
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}
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unsigned
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RegisterContextPOSIXProcessMonitor_arm::GetRegisterIndexFromOffset(unsigned offset)
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{
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unsigned reg;
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for (reg = 0; reg < k_num_registers_arm; reg++)
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{
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if (GetRegisterInfo()[reg].byte_offset == offset)
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break;
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}
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assert(reg < k_num_registers_arm && "Invalid register offset.");
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return reg;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::IsWatchpointHit(uint32_t hw_index)
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{
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return false;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::ClearWatchpointHits()
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{
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return false;
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}
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addr_t
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RegisterContextPOSIXProcessMonitor_arm::GetWatchpointAddress(uint32_t hw_index)
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{
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return LLDB_INVALID_ADDRESS;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::IsWatchpointVacant(uint32_t hw_index)
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{
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return false;
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}
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bool
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RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpointWithIndex(addr_t addr, size_t size,
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bool read, bool write,
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uint32_t hw_index)
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{
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return false;
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}
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uint32_t
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RegisterContextPOSIXProcessMonitor_arm::NumSupportedHardwareWatchpoints()
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{
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return 0;
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}
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