forked from OSchip/llvm-project
759 lines
22 KiB
C++
759 lines
22 KiB
C++
//===-- IRMemoryMap.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/DataExtractor.h"
|
|
#include "lldb/Core/Error.h"
|
|
#include "lldb/Core/Log.h"
|
|
#include "lldb/Core/Scalar.h"
|
|
#include "lldb/Expression/IRMemoryMap.h"
|
|
#include "lldb/Target/Process.h"
|
|
#include "lldb/Target/Target.h"
|
|
|
|
using namespace lldb_private;
|
|
|
|
IRMemoryMap::IRMemoryMap (lldb::TargetSP target_sp) :
|
|
m_target_wp(target_sp)
|
|
{
|
|
if (target_sp)
|
|
m_process_wp = target_sp->GetProcessSP();
|
|
}
|
|
|
|
IRMemoryMap::~IRMemoryMap ()
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
{
|
|
AllocationMap::iterator iter;
|
|
|
|
Error err;
|
|
|
|
while ((iter = m_allocations.begin()) != m_allocations.end())
|
|
{
|
|
err.Clear();
|
|
if (iter->second.m_leak)
|
|
m_allocations.erase(iter);
|
|
else
|
|
Free(iter->first, err);
|
|
}
|
|
}
|
|
}
|
|
|
|
lldb::addr_t
|
|
IRMemoryMap::FindSpace (size_t size)
|
|
{
|
|
lldb::TargetSP target_sp = m_target_wp.lock();
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
lldb::addr_t ret = LLDB_INVALID_ADDRESS;
|
|
|
|
if (process_sp && process_sp->CanJIT() && process_sp->IsAlive())
|
|
{
|
|
Error alloc_error;
|
|
|
|
ret = process_sp->AllocateMemory(size, lldb::ePermissionsReadable | lldb::ePermissionsWritable, alloc_error);
|
|
|
|
if (!alloc_error.Success())
|
|
return LLDB_INVALID_ADDRESS;
|
|
else
|
|
return ret;
|
|
}
|
|
|
|
for (int iterations = 0; iterations < 16; ++iterations)
|
|
{
|
|
lldb::addr_t candidate = LLDB_INVALID_ADDRESS;
|
|
|
|
switch (target_sp->GetArchitecture().GetAddressByteSize())
|
|
{
|
|
case 4:
|
|
{
|
|
uint32_t random_data = rand();
|
|
candidate = random_data;
|
|
candidate &= ~0xfffull;
|
|
break;
|
|
}
|
|
case 8:
|
|
{
|
|
uint32_t random_low = rand();
|
|
uint32_t random_high = rand();
|
|
candidate = random_high;
|
|
candidate <<= 32ull;
|
|
candidate |= random_low;
|
|
candidate &= ~0xfffull;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (IntersectsAllocation(candidate, size))
|
|
continue;
|
|
|
|
ret = candidate;
|
|
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
IRMemoryMap::AllocationMap::iterator
|
|
IRMemoryMap::FindAllocation (lldb::addr_t addr, size_t size)
|
|
{
|
|
if (addr == LLDB_INVALID_ADDRESS)
|
|
return m_allocations.end();
|
|
|
|
AllocationMap::iterator iter = m_allocations.lower_bound (addr);
|
|
|
|
if (iter == m_allocations.end() ||
|
|
iter->first > addr)
|
|
{
|
|
if (iter == m_allocations.begin())
|
|
return m_allocations.end();
|
|
iter--;
|
|
}
|
|
|
|
if (iter->first <= addr && iter->first + iter->second.m_size >= addr + size)
|
|
return iter;
|
|
|
|
return m_allocations.end();
|
|
}
|
|
|
|
bool
|
|
IRMemoryMap::IntersectsAllocation (lldb::addr_t addr, size_t size)
|
|
{
|
|
if (addr == LLDB_INVALID_ADDRESS)
|
|
return false;
|
|
|
|
AllocationMap::iterator iter = m_allocations.lower_bound (addr);
|
|
|
|
if (iter == m_allocations.end() ||
|
|
iter->first > addr)
|
|
{
|
|
if (iter == m_allocations.begin())
|
|
return false;
|
|
|
|
iter--;
|
|
}
|
|
|
|
while (iter != m_allocations.end() && iter->second.m_process_alloc < addr + size)
|
|
{
|
|
if (iter->second.m_process_start + iter->second.m_size > addr)
|
|
return true;
|
|
|
|
++iter;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
lldb::ByteOrder
|
|
IRMemoryMap::GetByteOrder()
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
return process_sp->GetByteOrder();
|
|
|
|
lldb::TargetSP target_sp = m_target_wp.lock();
|
|
|
|
if (target_sp)
|
|
return target_sp->GetArchitecture().GetByteOrder();
|
|
|
|
return lldb::eByteOrderInvalid;
|
|
}
|
|
|
|
uint32_t
|
|
IRMemoryMap::GetAddressByteSize()
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
return process_sp->GetAddressByteSize();
|
|
|
|
lldb::TargetSP target_sp = m_target_wp.lock();
|
|
|
|
if (target_sp)
|
|
return target_sp->GetArchitecture().GetAddressByteSize();
|
|
|
|
return UINT32_MAX;
|
|
}
|
|
|
|
ExecutionContextScope *
|
|
IRMemoryMap::GetBestExecutionContextScope()
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
return process_sp.get();
|
|
|
|
lldb::TargetSP target_sp = m_target_wp.lock();
|
|
|
|
if (target_sp)
|
|
return target_sp.get();
|
|
|
|
return NULL;
|
|
}
|
|
|
|
IRMemoryMap::Allocation::Allocation (lldb::addr_t process_alloc,
|
|
lldb::addr_t process_start,
|
|
size_t size,
|
|
uint32_t permissions,
|
|
uint8_t alignment,
|
|
AllocationPolicy policy) :
|
|
m_process_alloc (process_alloc),
|
|
m_process_start (process_start),
|
|
m_size (size),
|
|
m_permissions (permissions),
|
|
m_alignment (alignment),
|
|
m_policy (policy),
|
|
m_leak (false)
|
|
{
|
|
switch (policy)
|
|
{
|
|
default:
|
|
assert (0 && "We cannot reach this!");
|
|
case eAllocationPolicyHostOnly:
|
|
m_data.SetByteSize(size);
|
|
memset(m_data.GetBytes(), 0, size);
|
|
break;
|
|
case eAllocationPolicyProcessOnly:
|
|
break;
|
|
case eAllocationPolicyMirror:
|
|
m_data.SetByteSize(size);
|
|
memset(m_data.GetBytes(), 0, size);
|
|
break;
|
|
}
|
|
}
|
|
|
|
lldb::addr_t
|
|
IRMemoryMap::Malloc (size_t size, uint8_t alignment, uint32_t permissions, AllocationPolicy policy, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
lldb::ProcessSP process_sp;
|
|
lldb::addr_t allocation_address = LLDB_INVALID_ADDRESS;
|
|
lldb::addr_t aligned_address = LLDB_INVALID_ADDRESS;
|
|
|
|
size_t alignment_mask = alignment - 1;
|
|
size_t allocation_size;
|
|
|
|
if (size == 0)
|
|
allocation_size = alignment;
|
|
else
|
|
allocation_size = (size & alignment_mask) ? ((size + alignment) & (~alignment_mask)) : size;
|
|
|
|
switch (policy)
|
|
{
|
|
default:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't malloc: invalid allocation policy");
|
|
return LLDB_INVALID_ADDRESS;
|
|
case eAllocationPolicyHostOnly:
|
|
allocation_address = FindSpace(allocation_size);
|
|
if (allocation_address == LLDB_INVALID_ADDRESS)
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't malloc: address space is full");
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
break;
|
|
case eAllocationPolicyMirror:
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp && process_sp->CanJIT() && process_sp->IsAlive())
|
|
{
|
|
allocation_address = process_sp->AllocateMemory(allocation_size, permissions, error);
|
|
if (!error.Success())
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
else
|
|
{
|
|
policy = eAllocationPolicyHostOnly;
|
|
allocation_address = FindSpace(allocation_size);
|
|
if (allocation_address == LLDB_INVALID_ADDRESS)
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't malloc: address space is full");
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
}
|
|
break;
|
|
case eAllocationPolicyProcessOnly:
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
if (process_sp->CanJIT() && process_sp->IsAlive())
|
|
{
|
|
allocation_address = process_sp->AllocateMemory(allocation_size, permissions, error);
|
|
if (!error.Success())
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't malloc: process doesn't support allocating memory");
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't malloc: process doesn't exist, and this memory must be in the process");
|
|
return LLDB_INVALID_ADDRESS;
|
|
}
|
|
break;
|
|
}
|
|
|
|
|
|
lldb::addr_t mask = alignment - 1;
|
|
aligned_address = (allocation_address + mask) & (~mask);
|
|
|
|
m_allocations[aligned_address] = Allocation(allocation_address,
|
|
aligned_address,
|
|
allocation_size,
|
|
permissions,
|
|
alignment,
|
|
policy);
|
|
|
|
if (lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS))
|
|
{
|
|
const char * policy_string;
|
|
|
|
switch (policy)
|
|
{
|
|
default:
|
|
policy_string = "<invalid policy>";
|
|
break;
|
|
case eAllocationPolicyHostOnly:
|
|
policy_string = "eAllocationPolicyHostOnly";
|
|
break;
|
|
case eAllocationPolicyProcessOnly:
|
|
policy_string = "eAllocationPolicyProcessOnly";
|
|
break;
|
|
case eAllocationPolicyMirror:
|
|
policy_string = "eAllocationPolicyMirror";
|
|
break;
|
|
}
|
|
|
|
log->Printf("IRMemoryMap::Malloc (%" PRIu64 ", 0x%" PRIx64 ", 0x%" PRIx64 ", %s) -> 0x%" PRIx64,
|
|
(uint64_t)allocation_size,
|
|
(uint64_t)alignment,
|
|
(uint64_t)permissions,
|
|
policy_string,
|
|
aligned_address);
|
|
}
|
|
|
|
return aligned_address;
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::Leak (lldb::addr_t process_address, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
AllocationMap::iterator iter = m_allocations.find(process_address);
|
|
|
|
if (iter == m_allocations.end())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't leak: allocation doesn't exist");
|
|
return;
|
|
}
|
|
|
|
Allocation &allocation = iter->second;
|
|
|
|
allocation.m_leak = true;
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::Free (lldb::addr_t process_address, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
AllocationMap::iterator iter = m_allocations.find(process_address);
|
|
|
|
if (iter == m_allocations.end())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't free: allocation doesn't exist");
|
|
return;
|
|
}
|
|
|
|
Allocation &allocation = iter->second;
|
|
|
|
switch (allocation.m_policy)
|
|
{
|
|
default:
|
|
case eAllocationPolicyHostOnly:
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
if (process_sp->CanJIT() && process_sp->IsAlive())
|
|
process_sp->DeallocateMemory(allocation.m_process_alloc); // FindSpace allocated this for real
|
|
}
|
|
|
|
break;
|
|
}
|
|
case eAllocationPolicyMirror:
|
|
case eAllocationPolicyProcessOnly:
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
process_sp->DeallocateMemory(allocation.m_process_alloc);
|
|
}
|
|
}
|
|
|
|
if (lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS))
|
|
{
|
|
log->Printf("IRMemoryMap::Free (0x%" PRIx64 ") freed [0x%" PRIx64 "..0x%" PRIx64 ")",
|
|
(uint64_t)process_address,
|
|
iter->second.m_process_start,
|
|
iter->second.m_process_start + iter->second.m_size);
|
|
}
|
|
|
|
m_allocations.erase(iter);
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::WriteMemory (lldb::addr_t process_address, const uint8_t *bytes, size_t size, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
AllocationMap::iterator iter = FindAllocation(process_address, size);
|
|
|
|
if (iter == m_allocations.end())
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
{
|
|
process_sp->WriteMemory(process_address, bytes, size, error);
|
|
return;
|
|
}
|
|
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't write: no allocation contains the target range and the process doesn't exist");
|
|
return;
|
|
}
|
|
|
|
Allocation &allocation = iter->second;
|
|
|
|
uint64_t offset = process_address - allocation.m_process_start;
|
|
|
|
lldb::ProcessSP process_sp;
|
|
|
|
switch (allocation.m_policy)
|
|
{
|
|
default:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't write: invalid allocation policy");
|
|
return;
|
|
case eAllocationPolicyHostOnly:
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't write: data buffer is empty");
|
|
return;
|
|
}
|
|
::memcpy (allocation.m_data.GetBytes() + offset, bytes, size);
|
|
break;
|
|
case eAllocationPolicyMirror:
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't write: data buffer is empty");
|
|
return;
|
|
}
|
|
::memcpy (allocation.m_data.GetBytes() + offset, bytes, size);
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
process_sp->WriteMemory(process_address, bytes, size, error);
|
|
if (!error.Success())
|
|
return;
|
|
}
|
|
break;
|
|
case eAllocationPolicyProcessOnly:
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
process_sp->WriteMemory(process_address, bytes, size, error);
|
|
if (!error.Success())
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS))
|
|
{
|
|
log->Printf("IRMemoryMap::WriteMemory (0x%" PRIx64 ", 0x%" PRIx64 ", 0x%" PRId64 ") went to [0x%" PRIx64 "..0x%" PRIx64 ")",
|
|
(uint64_t)process_address,
|
|
(uint64_t)bytes,
|
|
(uint64_t)size,
|
|
(uint64_t)allocation.m_process_start,
|
|
(uint64_t)allocation.m_process_start + (uint64_t)allocation.m_size);
|
|
}
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::WriteScalarToMemory (lldb::addr_t process_address, Scalar &scalar, size_t size, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
if (size == UINT32_MAX)
|
|
size = scalar.GetByteSize();
|
|
|
|
if (size > 0)
|
|
{
|
|
uint8_t buf[32];
|
|
const size_t mem_size = scalar.GetAsMemoryData (buf, size, GetByteOrder(), error);
|
|
if (mem_size > 0)
|
|
{
|
|
return WriteMemory(process_address, buf, mem_size, error);
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString ("Couldn't write scalar: failed to get scalar as memory data");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString ("Couldn't write scalar: its size was zero");
|
|
}
|
|
return;
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::WritePointerToMemory (lldb::addr_t process_address, lldb::addr_t address, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
Scalar scalar(address);
|
|
|
|
WriteScalarToMemory(process_address, scalar, GetAddressByteSize(), error);
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::ReadMemory (uint8_t *bytes, lldb::addr_t process_address, size_t size, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
AllocationMap::iterator iter = FindAllocation(process_address, size);
|
|
|
|
if (iter == m_allocations.end())
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (process_sp)
|
|
{
|
|
process_sp->ReadMemory(process_address, bytes, size, error);
|
|
return;
|
|
}
|
|
|
|
lldb::TargetSP target_sp = m_target_wp.lock();
|
|
|
|
if (target_sp)
|
|
{
|
|
Address absolute_address(process_address);
|
|
target_sp->ReadMemory(absolute_address, false, bytes, size, error);
|
|
return;
|
|
}
|
|
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't read: no allocation contains the target range, and neither the process nor the target exist");
|
|
return;
|
|
}
|
|
|
|
Allocation &allocation = iter->second;
|
|
|
|
uint64_t offset = process_address - allocation.m_process_start;
|
|
|
|
lldb::ProcessSP process_sp;
|
|
|
|
switch (allocation.m_policy)
|
|
{
|
|
default:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't read: invalid allocation policy");
|
|
return;
|
|
case eAllocationPolicyHostOnly:
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't read: data buffer is empty");
|
|
return;
|
|
}
|
|
::memcpy (bytes, allocation.m_data.GetBytes() + offset, size);
|
|
break;
|
|
case eAllocationPolicyMirror:
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
process_sp->ReadMemory(process_address, bytes, size, error);
|
|
if (!error.Success())
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't read: data buffer is empty");
|
|
return;
|
|
}
|
|
::memcpy (bytes, allocation.m_data.GetBytes() + offset, size);
|
|
}
|
|
break;
|
|
case eAllocationPolicyProcessOnly:
|
|
process_sp = m_process_wp.lock();
|
|
if (process_sp)
|
|
{
|
|
process_sp->ReadMemory(process_address, bytes, size, error);
|
|
if (!error.Success())
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (lldb_private::Log *log = lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS))
|
|
{
|
|
log->Printf("IRMemoryMap::ReadMemory (0x%" PRIx64 ", 0x%" PRIx64 ", 0x%" PRId64 ") came from [0x%" PRIx64 "..0x%" PRIx64 ")",
|
|
(uint64_t)process_address,
|
|
(uint64_t)bytes,
|
|
(uint64_t)size,
|
|
(uint64_t)allocation.m_process_start,
|
|
(uint64_t)allocation.m_process_start + (uint64_t)allocation.m_size);
|
|
}
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::ReadScalarFromMemory (Scalar &scalar, lldb::addr_t process_address, size_t size, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
if (size > 0)
|
|
{
|
|
DataBufferHeap buf(size, 0);
|
|
ReadMemory(buf.GetBytes(), process_address, size, error);
|
|
|
|
if (!error.Success())
|
|
return;
|
|
|
|
DataExtractor extractor(buf.GetBytes(), buf.GetByteSize(), GetByteOrder(), GetAddressByteSize());
|
|
|
|
lldb::offset_t offset = 0;
|
|
|
|
switch (size)
|
|
{
|
|
default:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorStringWithFormat("Couldn't read scalar: unsupported size %" PRIu64, (uint64_t)size);
|
|
return;
|
|
case 1: scalar = extractor.GetU8(&offset); break;
|
|
case 2: scalar = extractor.GetU16(&offset); break;
|
|
case 4: scalar = extractor.GetU32(&offset); break;
|
|
case 8: scalar = extractor.GetU64(&offset); break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString ("Couldn't read scalar: its size was zero");
|
|
}
|
|
return;
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::ReadPointerFromMemory (lldb::addr_t *address, lldb::addr_t process_address, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
Scalar pointer_scalar;
|
|
ReadScalarFromMemory(pointer_scalar, process_address, GetAddressByteSize(), error);
|
|
|
|
if (!error.Success())
|
|
return;
|
|
|
|
*address = pointer_scalar.ULongLong();
|
|
|
|
return;
|
|
}
|
|
|
|
void
|
|
IRMemoryMap::GetMemoryData (DataExtractor &extractor, lldb::addr_t process_address, size_t size, Error &error)
|
|
{
|
|
error.Clear();
|
|
|
|
if (size > 0)
|
|
{
|
|
AllocationMap::iterator iter = FindAllocation(process_address, size);
|
|
|
|
if (iter == m_allocations.end())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorStringWithFormat("Couldn't find an allocation containing [0x%" PRIx64 "..0x%" PRIx64 ")", process_address, process_address + size);
|
|
return;
|
|
}
|
|
|
|
Allocation &allocation = iter->second;
|
|
|
|
switch (allocation.m_policy)
|
|
{
|
|
default:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't get memory data: invalid allocation policy");
|
|
return;
|
|
case eAllocationPolicyProcessOnly:
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't get memory data: memory is only in the target");
|
|
return;
|
|
case eAllocationPolicyMirror:
|
|
{
|
|
lldb::ProcessSP process_sp = m_process_wp.lock();
|
|
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't get memory data: data buffer is empty");
|
|
return;
|
|
}
|
|
if (process_sp)
|
|
{
|
|
process_sp->ReadMemory(allocation.m_process_start, allocation.m_data.GetBytes(), allocation.m_data.GetByteSize(), error);
|
|
if (!error.Success())
|
|
return;
|
|
uint64_t offset = process_address - allocation.m_process_start;
|
|
extractor = DataExtractor(allocation.m_data.GetBytes() + offset, size, GetByteOrder(), GetAddressByteSize());
|
|
return;
|
|
}
|
|
}
|
|
case eAllocationPolicyHostOnly:
|
|
if (!allocation.m_data.GetByteSize())
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString("Couldn't get memory data: data buffer is empty");
|
|
return;
|
|
}
|
|
uint64_t offset = process_address - allocation.m_process_start;
|
|
extractor = DataExtractor(allocation.m_data.GetBytes() + offset, size, GetByteOrder(), GetAddressByteSize());
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error.SetErrorToGenericError();
|
|
error.SetErrorString ("Couldn't get memory data: its size was zero");
|
|
return;
|
|
}
|
|
}
|
|
|
|
|