1 //===-- RegisterContextPOSIXProcessMonitor_arm.cpp -----------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===---------------------------------------------------------------------===//
10 #include "lldb/Core/DataBufferHeap.h"
11 #include "lldb/Core/RegisterValue.h"
12 #include "lldb/Target/Thread.h"
14 #include "Plugins/Process/Utility/RegisterContextPOSIX_arm.h"
15 #include "ProcessFreeBSD.h"
16 #include "RegisterContextPOSIXProcessMonitor_arm.h"
17 #include "ProcessMonitor.h"
19 using namespace lldb_private;
22 #define REG_CONTEXT_SIZE (GetGPRSize())
24 RegisterContextPOSIXProcessMonitor_arm::RegisterContextPOSIXProcessMonitor_arm(Thread &thread,
25 uint32_t concrete_frame_idx,
26 lldb_private::RegisterInfoInterface *register_info)
27 : RegisterContextPOSIX_arm(thread, concrete_frame_idx, register_info)
32 RegisterContextPOSIXProcessMonitor_arm::GetMonitor()
34 ProcessSP base = CalculateProcess();
35 ProcessFreeBSD *process = static_cast<ProcessFreeBSD*>(base.get());
36 return process->GetMonitor();
40 RegisterContextPOSIXProcessMonitor_arm::ReadGPR()
42 ProcessMonitor &monitor = GetMonitor();
43 return monitor.ReadGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
47 RegisterContextPOSIXProcessMonitor_arm::ReadFPR()
49 ProcessMonitor &monitor = GetMonitor();
50 return monitor.ReadFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
54 RegisterContextPOSIXProcessMonitor_arm::WriteGPR()
56 ProcessMonitor &monitor = GetMonitor();
57 return monitor.WriteGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
61 RegisterContextPOSIXProcessMonitor_arm::WriteFPR()
63 ProcessMonitor &monitor = GetMonitor();
64 return monitor.WriteFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
68 RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const unsigned reg,
71 ProcessMonitor &monitor = GetMonitor();
72 return monitor.ReadRegisterValue(m_thread.GetID(),
73 GetRegisterOffset(reg),
80 RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const unsigned reg,
81 const RegisterValue &value)
83 unsigned reg_to_write = reg;
84 RegisterValue value_to_write = value;
86 // Check if this is a subregister of a full register.
87 const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg);
88 if (reg_info->invalidate_regs && (reg_info->invalidate_regs[0] != LLDB_INVALID_REGNUM))
90 RegisterValue full_value;
91 uint32_t full_reg = reg_info->invalidate_regs[0];
92 const RegisterInfo *full_reg_info = GetRegisterInfoAtIndex(full_reg);
94 // Read the full register.
95 if (ReadRegister(full_reg_info, full_value))
98 ByteOrder byte_order = GetByteOrder();
99 uint8_t dst[RegisterValue::kMaxRegisterByteSize];
101 // Get the bytes for the full register.
102 const uint32_t dest_size = full_value.GetAsMemoryData (full_reg_info,
107 if (error.Success() && dest_size)
109 uint8_t src[RegisterValue::kMaxRegisterByteSize];
111 // Get the bytes for the source data.
112 const uint32_t src_size = value.GetAsMemoryData (reg_info, src, sizeof(src), byte_order, error);
113 if (error.Success() && src_size && (src_size < dest_size))
115 // Copy the src bytes to the destination.
116 memcpy (dst + (reg_info->byte_offset & 0x1), src, src_size);
117 // Set this full register as the value to write.
118 value_to_write.SetBytes(dst, full_value.GetByteSize(), byte_order);
119 value_to_write.SetType(full_reg_info);
120 reg_to_write = full_reg;
126 ProcessMonitor &monitor = GetMonitor();
127 return monitor.WriteRegisterValue(m_thread.GetID(),
128 GetRegisterOffset(reg_to_write),
129 GetRegisterName(reg_to_write),
134 RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
139 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
148 return ReadRegister(reg, value);
151 // Get pointer to m_fpr variable and set the data from it.
152 assert (reg_info->byte_offset < sizeof m_fpr);
153 uint8_t *src = (uint8_t *)&m_fpr + reg_info->byte_offset;
154 switch (reg_info->byte_size)
157 value.SetUInt16(*(uint16_t *)src);
160 value.SetUInt32(*(uint32_t *)src);
163 value.SetUInt64(*(uint64_t *)src);
166 assert(false && "Unhandled data size.");
172 RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
174 const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
178 return WriteRegister(reg, value);
189 RegisterContextPOSIXProcessMonitor_arm::ReadAllRegisterValues(DataBufferSP &data_sp)
191 bool success = false;
192 data_sp.reset (new DataBufferHeap (REG_CONTEXT_SIZE, 0));
193 if (data_sp && ReadGPR () && ReadFPR ())
195 uint8_t *dst = data_sp->GetBytes();
200 ::memcpy (dst, &m_gpr_arm, GetGPRSize());
202 ::memcpy (dst, &m_fpr, sizeof(m_fpr));
209 RegisterContextPOSIXProcessMonitor_arm::WriteAllRegisterValues(const DataBufferSP &data_sp)
211 bool success = false;
212 if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE)
214 uint8_t *src = data_sp->GetBytes();
217 ::memcpy (&m_gpr_arm, src, GetGPRSize());
222 ::memcpy (&m_fpr, src, sizeof(m_fpr));
224 success = WriteFPR();
232 RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpoint(addr_t addr, size_t size,
233 bool read, bool write)
235 const uint32_t num_hw_watchpoints = NumSupportedHardwareWatchpoints();
238 for (hw_index = 0; hw_index < num_hw_watchpoints; ++hw_index)
240 if (IsWatchpointVacant(hw_index))
241 return SetHardwareWatchpointWithIndex(addr, size,
246 return LLDB_INVALID_INDEX32;
250 RegisterContextPOSIXProcessMonitor_arm::ClearHardwareWatchpoint(uint32_t hw_index)
256 RegisterContextPOSIXProcessMonitor_arm::HardwareSingleStep(bool enable)
262 RegisterContextPOSIXProcessMonitor_arm::UpdateAfterBreakpoint()
266 if ((pc = GetPC()) == LLDB_INVALID_ADDRESS)
273 RegisterContextPOSIXProcessMonitor_arm::GetRegisterIndexFromOffset(unsigned offset)
276 for (reg = 0; reg < k_num_registers_arm; reg++)
278 if (GetRegisterInfo()[reg].byte_offset == offset)
281 assert(reg < k_num_registers_arm && "Invalid register offset.");
286 RegisterContextPOSIXProcessMonitor_arm::IsWatchpointHit(uint32_t hw_index)
292 RegisterContextPOSIXProcessMonitor_arm::ClearWatchpointHits()
298 RegisterContextPOSIXProcessMonitor_arm::GetWatchpointAddress(uint32_t hw_index)
300 return LLDB_INVALID_ADDRESS;
304 RegisterContextPOSIXProcessMonitor_arm::IsWatchpointVacant(uint32_t hw_index)
310 RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpointWithIndex(addr_t addr, size_t size,
311 bool read, bool write,
318 RegisterContextPOSIXProcessMonitor_arm::NumSupportedHardwareWatchpoints()