Import LLDB as of upstream SVN 241361 (git 612c075f)

1 files changed, 322 insertions, 0 deletions

diff --git a/source/Plugins/Process/FreeBSD/RegisterContextPOSIXProcessMonitor_arm.cpp b/source/Plugins/Process/FreeBSD/RegisterContextPOSIXProcessMonitor_arm.cpp
new file mode 100644
index 0000000..ac2f81d
--- /dev/null
+++ b/source/Plugins/Process/FreeBSD/RegisterContextPOSIXProcessMonitor_arm.cpp
@@ -0,0 +1,322 @@
+//===-- RegisterContextPOSIXProcessMonitor_arm.cpp -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===---------------------------------------------------------------------===//
+
+#include "lldb/Core/DataBufferHeap.h"
+#include "lldb/Core/RegisterValue.h"
+#include "lldb/Target/Thread.h"
+
+#include "RegisterContextPOSIX_arm.h"
+#include "ProcessPOSIX.h"
+#include "RegisterContextPOSIXProcessMonitor_arm.h"
+#include "ProcessMonitor.h"
+
+using namespace lldb_private;
+using namespace lldb;
+
+#define REG_CONTEXT_SIZE (GetGPRSize())
+
+RegisterContextPOSIXProcessMonitor_arm::RegisterContextPOSIXProcessMonitor_arm(Thread &thread,
+                                                                                     uint32_t concrete_frame_idx,
+                                                                                     lldb_private::RegisterInfoInterface *register_info)
+    : RegisterContextPOSIX_arm(thread, concrete_frame_idx, register_info)
+{
+}
+
+ProcessMonitor &
+RegisterContextPOSIXProcessMonitor_arm::GetMonitor()
+{
+    ProcessSP base = CalculateProcess();
+    ProcessPOSIX *process = static_cast<ProcessPOSIX*>(base.get());
+    return process->GetMonitor();
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ReadGPR()
+{
+     ProcessMonitor &monitor = GetMonitor();
+     return monitor.ReadGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ReadFPR()
+{
+    ProcessMonitor &monitor = GetMonitor();
+    return monitor.ReadFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::WriteGPR()
+{
+    ProcessMonitor &monitor = GetMonitor();
+    return monitor.WriteGPR(m_thread.GetID(), &m_gpr_arm, GetGPRSize());
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::WriteFPR()
+{
+    ProcessMonitor &monitor = GetMonitor();
+    return monitor.WriteFPR(m_thread.GetID(), &m_fpr, sizeof(m_fpr));
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const unsigned reg,
+                                                       RegisterValue &value)
+{
+    ProcessMonitor &monitor = GetMonitor();
+    return monitor.ReadRegisterValue(m_thread.GetID(),
+                                     GetRegisterOffset(reg),
+                                     GetRegisterName(reg),
+                                     GetRegisterSize(reg),
+                                     value);
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const unsigned reg,
+                                                         const RegisterValue &value)
+{
+    unsigned reg_to_write = reg;
+    RegisterValue value_to_write = value;
+
+    // Check if this is a subregister of a full register.
+    const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg);
+    if (reg_info->invalidate_regs && (reg_info->invalidate_regs[0] != LLDB_INVALID_REGNUM))
+    {
+        RegisterValue full_value;
+        uint32_t full_reg = reg_info->invalidate_regs[0];
+        const RegisterInfo *full_reg_info = GetRegisterInfoAtIndex(full_reg);
+
+        // Read the full register.
+        if (ReadRegister(full_reg_info, full_value))
+        {
+            Error error;
+            ByteOrder byte_order = GetByteOrder();
+            uint8_t dst[RegisterValue::kMaxRegisterByteSize];
+
+            // Get the bytes for the full register.
+            const uint32_t dest_size = full_value.GetAsMemoryData (full_reg_info,
+                                                                   dst,
+                                                                   sizeof(dst),
+                                                                   byte_order,
+                                                                   error);
+            if (error.Success() && dest_size)
+            {
+                uint8_t src[RegisterValue::kMaxRegisterByteSize];
+
+                // Get the bytes for the source data.
+                const uint32_t src_size = value.GetAsMemoryData (reg_info, src, sizeof(src), byte_order, error);
+                if (error.Success() && src_size && (src_size < dest_size))
+                {
+                    // Copy the src bytes to the destination.
+                    memcpy (dst + (reg_info->byte_offset & 0x1), src, src_size);
+                    // Set this full register as the value to write.
+                    value_to_write.SetBytes(dst, full_value.GetByteSize(), byte_order);
+                    value_to_write.SetType(full_reg_info);
+                    reg_to_write = full_reg;
+                }
+            }
+        }
+    }
+
+    ProcessMonitor &monitor = GetMonitor();
+    return monitor.WriteRegisterValue(m_thread.GetID(),
+                                      GetRegisterOffset(reg_to_write),
+                                      GetRegisterName(reg_to_write),
+                                      value_to_write);
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ReadRegister(const RegisterInfo *reg_info, RegisterValue &value)
+{
+    if (!reg_info)
+        return false;
+
+    const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
+
+    if (IsFPR(reg))
+    {
+        if (!ReadFPR())
+            return false;
+    }
+    else
+    {
+        return ReadRegister(reg, value);
+    }
+
+    // Get pointer to m_fpr variable and set the data from it.
+    assert (reg_info->byte_offset < sizeof m_fpr);
+    uint8_t *src = (uint8_t *)&m_fpr + reg_info->byte_offset;
+    switch (reg_info->byte_size)
+    {
+        case 2:
+            value.SetUInt16(*(uint16_t *)src);
+            return true;
+        case 4:
+            value.SetUInt32(*(uint32_t *)src);
+            return true;
+        case 8:
+            value.SetUInt64(*(uint64_t *)src);
+            return true;
+        default:
+            assert(false && "Unhandled data size.");
+            return false;
+    }
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value)
+{
+    const uint32_t reg = reg_info->kinds[eRegisterKindLLDB];
+
+    if (IsGPR(reg))
+    {
+        return WriteRegister(reg, value);
+    }
+    else if (IsFPR(reg))
+    {
+        return WriteFPR();
+    }
+
+    return false;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ReadAllRegisterValues(DataBufferSP &data_sp)
+{
+    bool success = false;
+    data_sp.reset (new DataBufferHeap (REG_CONTEXT_SIZE, 0));
+    if (data_sp && ReadGPR () && ReadFPR ())
+    {
+        uint8_t *dst = data_sp->GetBytes();
+        success = dst != 0;
+
+        if (success)
+        {
+            ::memcpy (dst, &m_gpr_arm, GetGPRSize());
+            dst += GetGPRSize();
+            ::memcpy (dst, &m_fpr, sizeof(m_fpr));
+        }
+    }
+    return success;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::WriteAllRegisterValues(const DataBufferSP &data_sp)
+{
+    bool success = false;
+    if (data_sp && data_sp->GetByteSize() == REG_CONTEXT_SIZE)
+    {
+        uint8_t *src = data_sp->GetBytes();
+        if (src)
+        {
+            ::memcpy (&m_gpr_arm, src, GetGPRSize());
+
+            if (WriteGPR())
+            {
+                src += GetGPRSize();
+                ::memcpy (&m_fpr, src, sizeof(m_fpr));
+
+                success = WriteFPR();
+            }
+        }
+    }
+    return success;
+}
+
+uint32_t
+RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpoint(addr_t addr, size_t size,
+                                                                bool read, bool write)
+{
+    const uint32_t num_hw_watchpoints = NumSupportedHardwareWatchpoints();
+    uint32_t hw_index;
+
+    for (hw_index = 0; hw_index < num_hw_watchpoints; ++hw_index)
+    {
+        if (IsWatchpointVacant(hw_index))
+            return SetHardwareWatchpointWithIndex(addr, size,
+                                                  read, write,
+                                                  hw_index);
+    }
+
+    return LLDB_INVALID_INDEX32;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ClearHardwareWatchpoint(uint32_t hw_index)
+{
+    return false;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::HardwareSingleStep(bool enable)
+{
+    return false;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::UpdateAfterBreakpoint()
+{
+    lldb::addr_t pc;
+
+    if ((pc = GetPC()) == LLDB_INVALID_ADDRESS)
+        return false;
+
+    return true;
+}
+
+unsigned
+RegisterContextPOSIXProcessMonitor_arm::GetRegisterIndexFromOffset(unsigned offset)
+{
+    unsigned reg;
+    for (reg = 0; reg < k_num_registers_arm; reg++)
+    {
+        if (GetRegisterInfo()[reg].byte_offset == offset)
+            break;
+    }
+    assert(reg < k_num_registers_arm && "Invalid register offset.");
+    return reg;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::IsWatchpointHit(uint32_t hw_index)
+{
+    return false;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::ClearWatchpointHits()
+{
+    return false;
+}
+
+addr_t
+RegisterContextPOSIXProcessMonitor_arm::GetWatchpointAddress(uint32_t hw_index)
+{
+    return LLDB_INVALID_ADDRESS;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::IsWatchpointVacant(uint32_t hw_index)
+{
+    return false;
+}
+
+bool
+RegisterContextPOSIXProcessMonitor_arm::SetHardwareWatchpointWithIndex(addr_t addr, size_t size,
+                                                                         bool read, bool write,
+                                                                         uint32_t hw_index)
+{
+    return false;
+}
+
+uint32_t
+RegisterContextPOSIXProcessMonitor_arm::NumSupportedHardwareWatchpoints()
+{
+    return 0;
+}
+