https://github.com/mbucko created
https://github.com/llvm/llvm-project/pull/95007
Test Plan:
llvm-lit
llvm-project/lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
llvm-project/lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
Reviewers: clayborg
Tasks: lldb
>From da8f23bf675abbb6742987e41939710ccb1c18ac Mon Sep 17 00:00:00 2001
From: Miro Bucko <mbu...@meta.com>
Date: Tue, 4 Jun 2024 12:01:48 -0700
Subject: [PATCH] [lldb][API] Add Find(Ranges)InMemory() to Process SB API
Test Plan:
llvm-lit
llvm-project/lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
llvm-project/lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
Reviewers: clayborg
Tasks: lldb
---
lldb/bindings/python/python-typemaps.swig | 3 +-
lldb/include/lldb/API/SBProcess.h | 8 ++
lldb/include/lldb/Core/AddressRangeListImpl.h | 2 +
lldb/include/lldb/Target/Process.h | 11 ++
lldb/source/API/SBProcess.cpp | 115 ++++++++++++++++-
lldb/source/Target/Process.cpp | 117 +++++++++++++++++
.../API/python_api/find_in_memory/Makefile | 3 +
.../find_in_memory/TestFindInMemory.py | 85 +++++++++++++
.../find_in_memory/TestFindRangesInMemory.py | 120 ++++++++++++++++++
.../find_in_memory/address_ranges_helper.py | 30 +++++
.../API/python_api/find_in_memory/main.cpp | 21 +++
11 files changed, 509 insertions(+), 6 deletions(-)
create mode 100644 lldb/test/API/python_api/find_in_memory/Makefile
create mode 100644 lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
create mode 100644
lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
create mode 100644
lldb/test/API/python_api/find_in_memory/address_ranges_helper.py
create mode 100644 lldb/test/API/python_api/find_in_memory/main.cpp
diff --git a/lldb/bindings/python/python-typemaps.swig
b/lldb/bindings/python/python-typemaps.swig
index 8d4b740e5f35c..923a787e77c88 100644
--- a/lldb/bindings/python/python-typemaps.swig
+++ b/lldb/bindings/python/python-typemaps.swig
@@ -257,7 +257,8 @@ AND call SWIG_fail at the same time, because it will result
in a double free.
}
// For SBProcess::WriteMemory, SBTarget::GetInstructions and
SBDebugger::DispatchInput.
%typemap(in) (const void *buf, size_t size),
- (const void *data, size_t data_len) {
+ (const void *data, size_t data_len),
+ (const void *buf, uint64_t size) {
if (PythonString::Check($input)) {
PythonString str(PyRefType::Borrowed, $input);
$1 = (void *)str.GetString().data();
diff --git a/lldb/include/lldb/API/SBProcess.h
b/lldb/include/lldb/API/SBProcess.h
index f1b5d1fb92ce2..eb7441629108c 100644
--- a/lldb/include/lldb/API/SBProcess.h
+++ b/lldb/include/lldb/API/SBProcess.h
@@ -209,6 +209,14 @@ class LLDB_API SBProcess {
lldb::addr_t ReadPointerFromMemory(addr_t addr, lldb::SBError &error);
+ lldb::SBAddressRangeList FindRangesInMemory(const void *buf, uint64_t size,
+ SBAddressRangeList &ranges,
+ uint32_t alignment,
+ uint32_t max_matches);
+
+ lldb::addr_t FindInMemory(const void *buf, uint64_t size,
+ SBAddressRange &range, uint32_t alignment);
+
// Events
static lldb::StateType GetStateFromEvent(const lldb::SBEvent &event);
diff --git a/lldb/include/lldb/Core/AddressRangeListImpl.h
b/lldb/include/lldb/Core/AddressRangeListImpl.h
index 46ebfe73d4d92..777cf81e2b1c3 100644
--- a/lldb/include/lldb/Core/AddressRangeListImpl.h
+++ b/lldb/include/lldb/Core/AddressRangeListImpl.h
@@ -14,6 +14,7 @@
namespace lldb {
class SBBlock;
+class SBProcess;
}
namespace lldb_private {
@@ -40,6 +41,7 @@ class AddressRangeListImpl {
private:
friend class lldb::SBBlock;
+ friend class lldb::SBProcess;
AddressRanges &ref();
diff --git a/lldb/include/lldb/Target/Process.h
b/lldb/include/lldb/Target/Process.h
index eec337c15f7ed..176eb2b19f226 100644
--- a/lldb/include/lldb/Target/Process.h
+++ b/lldb/include/lldb/Target/Process.h
@@ -2685,6 +2685,13 @@ void PruneThreadPlans();
lldb::addr_t FindInMemory(lldb::addr_t low, lldb::addr_t high,
const uint8_t *buf, size_t size);
+ Status FindInMemory(AddressRanges &matches, const uint8_t *buf, size_t size,
+ const AddressRanges &ranges, size_t alignment,
+ size_t max_count);
+
+ lldb::addr_t FindInMemory(const AddressRange &range, const uint8_t *buf,
+ size_t size, size_t alignment);
+
protected:
friend class Trace;
@@ -2800,6 +2807,10 @@ void PruneThreadPlans();
virtual size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
Status &error) = 0;
+ void DoFindInMemory(lldb::addr_t start_addr, lldb::addr_t end_addr,
+ const uint8_t *buf, size_t size, AddressRanges &matches,
+ size_t alignment, size_t max_count);
+
/// DoGetMemoryRegionInfo is called by GetMemoryRegionInfo after it has
/// removed non address bits from load_addr. Override this method in
/// subclasses of Process.
diff --git a/lldb/source/API/SBProcess.cpp b/lldb/source/API/SBProcess.cpp
index c37c111c5a58e..d935c5d23653e 100644
--- a/lldb/source/API/SBProcess.cpp
+++ b/lldb/source/API/SBProcess.cpp
@@ -14,6 +14,7 @@
#include "lldb/lldb-defines.h"
#include "lldb/lldb-types.h"
+#include "lldb/Core/AddressRangeListImpl.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
@@ -26,6 +27,7 @@
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/Args.h"
+#include "lldb/Utility/LLDBLog.h"
#include "lldb/Utility/ProcessInfo.h"
#include "lldb/Utility/State.h"
#include "lldb/Utility/Stream.h"
@@ -320,8 +322,8 @@ void SBProcess::ReportEventState(const SBEvent &event,
FileSP out) const {
if (process_sp) {
StreamFile stream(out);
const StateType event_state = SBProcess::GetStateFromEvent(event);
- stream.Printf("Process %" PRIu64 " %s\n",
- process_sp->GetID(), SBDebugger::StateAsCString(event_state));
+ stream.Printf("Process %" PRIu64 " %s\n", process_sp->GetID(),
+ SBDebugger::StateAsCString(event_state));
}
}
@@ -378,7 +380,6 @@ bool SBProcess::SetSelectedThreadByIndexID(uint32_t
index_id) {
ret_val = process_sp->GetThreadList().SetSelectedThreadByIndexID(index_id);
}
-
return ret_val;
}
@@ -546,7 +547,6 @@ ByteOrder SBProcess::GetByteOrder() const {
if (process_sp)
byteOrder = process_sp->GetTarget().GetArchitecture().GetByteOrder();
-
return byteOrder;
}
@@ -558,7 +558,6 @@ uint32_t SBProcess::GetAddressByteSize() const {
if (process_sp)
size = process_sp->GetTarget().GetArchitecture().GetAddressByteSize();
-
return size;
}
@@ -810,6 +809,112 @@ const char *SBProcess::GetBroadcasterClass() {
return ConstString(Process::GetStaticBroadcasterClass()).AsCString();
}
+lldb::SBAddressRangeList
+SBProcess::FindRangesInMemory(const void *buf, uint64_t size,
+ SBAddressRangeList &ranges, uint32_t alignment,
+ uint32_t max_matches) {
+ LLDB_INSTRUMENT_VA(this, buf, size, ranges, alignment, max_matches);
+
+ Log *log = GetLog(LLDBLog::Process);
+ lldb::SBAddressRangeList matches;
+
+ if (alignment == 0) {
+ LLDB_LOGF(log, "SBProcess::%s allignmet is 0, Must be greater than 0.",
+ __FUNCTION__);
+ return matches;
+ }
+
+ if (buf == nullptr) {
+ LLDB_LOGF(log, "SBProcess::%s provided 'buffer' is nullptr.",
__FUNCTION__);
+ return matches;
+ }
+
+ if (size == 0) {
+ LLDB_LOGF(log, "SBProcess::%s buffer size is 0.", __FUNCTION__);
+ return matches;
+ }
+
+ if (ranges.GetSize() == 0) {
+ LLDB_LOGF(log, "SBProcess::%s provided 'range' is invalid.", __FUNCTION__);
+ return matches;
+ }
+
+ ProcessSP process_sp(GetSP());
+ if (!process_sp) {
+ LLDB_LOGF(log, "SBProcess::%s SBProcess is invalid.", __FUNCTION__);
+ return matches;
+ }
+ Process::StopLocker stop_locker;
+ if (!stop_locker.TryLock(&process_sp->GetRunLock())) {
+ LLDB_LOGF(
+ log,
+ "SBProcess::%s Cannot find process in memory while process is
running.",
+ __FUNCTION__);
+ return matches;
+ }
+ std::lock_guard<std::recursive_mutex> guard(
+ process_sp->GetTarget().GetAPIMutex());
+ lldb::SBError error;
+ error.ref() = process_sp->FindInMemory(
+ matches.m_opaque_up->ref(), static_cast<const uint8_t *>(buf), size,
+ ranges.m_opaque_up->ref(), alignment, max_matches);
+ if (error.Fail()) {
+ LLDB_LOGF(log, "SBProcess::%s failed to find pattern in memory.",
+ __FUNCTION__);
+ }
+ return matches;
+}
+
+lldb::addr_t SBProcess::FindInMemory(const void *buf, uint64_t size,
+ SBAddressRange &range,
+ uint32_t alignment) {
+ LLDB_INSTRUMENT_VA(this, buf, size, range, alignment);
+
+ Log *log = GetLog(LLDBLog::Process);
+
+ if (alignment == 0) {
+ LLDB_LOGF(log, "SBProcess::%s allignmet is 0, Must be greater than 0.",
+ __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ if (buf == nullptr) {
+ LLDB_LOGF(log, "SBProcess::%s provided 'buffer' is nullptr.",
__FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ if (size == 0) {
+ LLDB_LOGF(log, "SBProcess::%s buffer size is 0.", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ if (!range.IsValid()) {
+ LLDB_LOGF(log, "SBProcess::%s provided 'range' is invalid.", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ ProcessSP process_sp(GetSP());
+
+ if (!process_sp) {
+ LLDB_LOGF(log, "SBProcess::%s SBProcess is invalid.", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ Process::StopLocker stop_locker;
+ if (!stop_locker.TryLock(&process_sp->GetRunLock())) {
+ LLDB_LOGF(
+ log,
+ "SBProcess::%s Cannot find process in memory while process is
running.",
+ __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ std::lock_guard<std::recursive_mutex> guard(
+ process_sp->GetTarget().GetAPIMutex());
+ return process_sp->FindInMemory(
+ *range.m_opaque_up, static_cast<const uint8_t *>(buf), size, alignment);
+}
+
size_t SBProcess::ReadMemory(addr_t addr, void *dst, size_t dst_len,
SBError &sb_error) {
LLDB_INSTRUMENT_VA(this, addr, dst, dst_len, sb_error);
diff --git a/lldb/source/Target/Process.cpp b/lldb/source/Target/Process.cpp
index 1e321f8bde391..06120be7979f9 100644
--- a/lldb/source/Target/Process.cpp
+++ b/lldb/source/Target/Process.cpp
@@ -2007,6 +2007,123 @@ size_t Process::ReadMemory(addr_t addr, void *buf,
size_t size, Status &error) {
}
}
+void Process::DoFindInMemory(lldb::addr_t start_addr, lldb::addr_t end_addr,
+ const uint8_t *buf, size_t size,
+ AddressRanges &matches, size_t alignment,
+ size_t max_count) {
+ // Inputs are already validated in FindInMemory() functions.
+ assert(buf != nullptr);
+ assert(size > 0);
+ assert(alignment > 0);
+ assert(max_count > 0);
+ assert(start_addr != LLDB_INVALID_ADDRESS);
+ assert(end_addr != LLDB_INVALID_ADDRESS);
+ assert(start_addr < end_addr);
+
+ lldb::addr_t start = start_addr;
+ while (matches.size() < max_count && (start + size) < end_addr) {
+ const lldb::addr_t found_addr = FindInMemory(start, end_addr, buf, size);
+ if (found_addr == LLDB_INVALID_ADDRESS)
+ break;
+ matches.emplace_back(found_addr, size);
+ start = found_addr + alignment;
+ }
+}
+
+Status Process::FindInMemory(AddressRanges &matches, const uint8_t *buf,
+ size_t size, const AddressRanges &ranges,
+ size_t alignment, size_t max_count) {
+ Status error;
+ if (alignment == 0) {
+ error.SetErrorStringWithFormat(
+ "invalid alignment %zu, must be greater than 0", alignment);
+ return error;
+ }
+ if (buf == nullptr) {
+ error.SetErrorStringWithFormat("buffer is null");
+ return error;
+ }
+ if (size == 0) {
+ error.SetErrorStringWithFormat("size is zero");
+ return error;
+ }
+ if (ranges.empty()) {
+ error.SetErrorStringWithFormat("ranges in empty");
+ return error;
+ }
+ if (max_count == 0) {
+ error.SetErrorStringWithFormat(
+ "invalid max_count %zu, must be greater than 0", max_count);
+ return error;
+ }
+
+ Target &target = GetTarget();
+ Log *log = GetLog(LLDBLog::Process);
+ for (size_t i = 0; i < ranges.size(); ++i) {
+ if (matches.size() >= max_count) {
+ break;
+ }
+ const AddressRange &range = ranges[i];
+ if (range.IsValid() == false) {
+ LLDB_LOGF(log, "Process::%s range is invalid", __FUNCTION__);
+ continue;
+ }
+
+ const lldb::addr_t start_addr =
+ range.GetBaseAddress().GetLoadAddress(&target);
+ if (start_addr == LLDB_INVALID_ADDRESS) {
+ LLDB_LOGF(log,
+ "Process::%s range load start address is invalid, skipping",
+ __FUNCTION__);
+ continue;
+ }
+ const lldb::addr_t end_addr = start_addr + range.GetByteSize();
+ DoFindInMemory(start_addr, end_addr, buf, size, matches, alignment,
+ max_count);
+ }
+
+ return Status();
+}
+
+lldb::addr_t Process::FindInMemory(const AddressRange &range,
+ const uint8_t *buf, size_t size,
+ size_t alignment) {
+ Log *log = GetLog(LLDBLog::Process);
+ if (buf == nullptr) {
+ LLDB_LOGF(log, "Process::%s buffer is null", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+ if (size == 0) {
+ LLDB_LOGF(log, "Process::%s size is zero", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+ if (alignment == 0) {
+ LLDB_LOGF(log, "Process::%s alignment is zero, returning", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+ if (range.IsValid() == false) {
+ LLDB_LOGF(log, "Process::%s range is invalid", __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+
+ Target &target = GetTarget();
+ const lldb::addr_t start_addr =
+ range.GetBaseAddress().GetLoadAddress(&target);
+ if (start_addr == LLDB_INVALID_ADDRESS) {
+ LLDB_LOGF(log, "Process::%s range load start address is invalid,
returning",
+ __FUNCTION__);
+ return LLDB_INVALID_ADDRESS;
+ }
+ const lldb::addr_t end_addr = start_addr + range.GetByteSize();
+
+ AddressRanges matches;
+ DoFindInMemory(start_addr, end_addr, buf, size, matches, alignment, 1);
+ if (matches.empty())
+ return LLDB_INVALID_ADDRESS;
+
+ return matches[0].GetBaseAddress().GetLoadAddress(&target);
+}
+
size_t Process::ReadCStringFromMemory(addr_t addr, std::string &out_str,
Status &error) {
char buf[256];
diff --git a/lldb/test/API/python_api/find_in_memory/Makefile
b/lldb/test/API/python_api/find_in_memory/Makefile
new file mode 100644
index 0000000000000..99998b20bcb05
--- /dev/null
+++ b/lldb/test/API/python_api/find_in_memory/Makefile
@@ -0,0 +1,3 @@
+CXX_SOURCES := main.cpp
+
+include Makefile.rules
diff --git a/lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
b/lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
new file mode 100644
index 0000000000000..95ea9b75cdc31
--- /dev/null
+++ b/lldb/test/API/python_api/find_in_memory/TestFindInMemory.py
@@ -0,0 +1,85 @@
+"""
+Test Process::FindInMemory.
+"""
+
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+from address_ranges_helper import GetAddressRanges
+from address_ranges_helper import SINGLE_INSTANCE_PATTERN
+
+class FindInMemoryTestCase(TestBase):
+ NO_DEBUG_INFO_TESTCASE = True
+
+ def setUp(self):
+ TestBase.setUp(self)
+
+ self.build()
+ self.target, self.process, self.thread, self.bp = (
+ lldbutil.run_to_source_breakpoint(
+ self, "break here", lldb.SBFileSpec("main.cpp")
+ )
+ )
+ self.assertTrue(self.bp.IsValid())
+
+ def test_find_in_memory_ok(self):
+ """Make sure a match exists in the heap memory and the right address
ranges are provided"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ for addr_range in addr_ranges:
+ addr = self.process.FindInMemory(
+ SINGLE_INSTANCE_PATTERN,
+ addr_range,
+ 1,
+ )
+
+ if addr != lldb.LLDB_INVALID_ADDRESS:
+ break
+
+ self.assertNotEqual(addr, lldb.LLDB_INVALID_ADDRESS)
+
+ def test_find_in_memory_invalid_alignment(self):
+ """Make sure the alignment 0 is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ addr = self.process.FindInMemory(
+ SINGLE_INSTANCE_PATTERN,
+ addr_ranges[0],
+ 0,
+ )
+
+ self.assertEqual(addr, lldb.LLDB_INVALID_ADDRESS)
+
+ def test_find_in_memory_invalid_address_range(self):
+ """Make sure invalid address range is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr = self.process.FindInMemory(
+ SINGLE_INSTANCE_PATTERN,
+ lldb.SBAddressRange(),
+ 1,
+ )
+
+ self.assertEqual(addr, lldb.LLDB_INVALID_ADDRESS)
+
+ def test_find_in_memory_invalid_buffer(self):
+ """Make sure the empty buffer is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ addr = self.process.FindInMemory(
+ "",
+ addr_ranges[0],
+ 1,
+ )
+
+ self.assertEqual(addr, lldb.LLDB_INVALID_ADDRESS)
diff --git a/lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
b/lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
new file mode 100644
index 0000000000000..ac4b4b8c481b6
--- /dev/null
+++ b/lldb/test/API/python_api/find_in_memory/TestFindRangesInMemory.py
@@ -0,0 +1,120 @@
+"""
+Test Process::FindRangesInMemory.
+"""
+
+import lldb
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+from address_ranges_helper import GetAddressRanges
+from address_ranges_helper import SINGLE_INSTANCE_PATTERN
+from address_ranges_helper import DOUBLE_INSTANCE_PATTERN
+
+
+class FindRangesInMemoryTestCase(TestBase):
+ NO_DEBUG_INFO_TESTCASE = True
+
+ def setUp(self):
+ TestBase.setUp(self)
+
+ self.build()
+ self.target, self.process, self.thread, self.bp = (
+ lldbutil.run_to_source_breakpoint(
+ self, "break here", lldb.SBFileSpec("main.cpp")
+ )
+ )
+ self.assertTrue(self.bp.IsValid())
+
+ def test_find_ranges_in_memory_two_matches(self):
+ """Make sure two matches exist in the heap memory and the right
address ranges are provided"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ matches = self.process.FindRangesInMemory(
+ DOUBLE_INSTANCE_PATTERN,
+ addr_ranges,
+ 1,
+ 10,
+ )
+
+ self.assertEqual(matches.GetSize(), 2)
+
+ def test_find_ranges_in_memory_one_match(self):
+ """Make sure exactly one match exists in the heap memory and the right
address ranges are provided"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ matches = self.process.FindRangesInMemory(
+ SINGLE_INSTANCE_PATTERN,
+ addr_ranges,
+ 1,
+ 10,
+ )
+
+ self.assertEqual(matches.GetSize(), 1)
+
+ def test_find_ranges_in_memory_one_match_max(self):
+ """Make sure at least one matche exists in the heap memory and the
right address ranges are provided"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ matches = self.process.FindRangesInMemory(
+ DOUBLE_INSTANCE_PATTERN,
+ addr_ranges,
+ 1,
+ 1,
+ )
+
+ self.assertEqual(matches.GetSize(), 1)
+
+ def test_find_ranges_in_memory_invalid_alignment(self):
+ """Make sure the alignment 0 is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ matches = self.process.FindRangesInMemory(
+ DOUBLE_INSTANCE_PATTERN,
+ addr_ranges,
+ 0,
+ 10,
+ )
+
+ self.assertEqual(matches.GetSize(), 0)
+
+ def test_find_ranges_in_memory_empty_ranges(self):
+ """Make sure the empty ranges is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = lldb.SBAddressRangeList()
+ matches = self.process.FindRangesInMemory(
+ DOUBLE_INSTANCE_PATTERN,
+ addr_ranges,
+ 1,
+ 10,
+ )
+
+ self.assertEqual(matches.GetSize(), 0)
+
+ def test_find_ranges_in_memory_invalid_buffer(self):
+ """Make sure the empty buffer is failing"""
+ self.assertTrue(self.process, PROCESS_IS_VALID)
+ self.assertState(self.process.GetState(), lldb.eStateStopped,
PROCESS_STOPPED)
+
+ addr_ranges = GetAddressRanges(self)
+
+ matches = self.process.FindRangesInMemory(
+ "",
+ addr_ranges,
+ 1,
+ 10,
+ )
+
+ self.assertEqual(matches.GetSize(), 0)
diff --git a/lldb/test/API/python_api/find_in_memory/address_ranges_helper.py
b/lldb/test/API/python_api/find_in_memory/address_ranges_helper.py
new file mode 100644
index 0000000000000..87341361c4c62
--- /dev/null
+++ b/lldb/test/API/python_api/find_in_memory/address_ranges_helper.py
@@ -0,0 +1,30 @@
+import lldb
+
+SINGLE_INSTANCE_PATTERN = "there_is_only_one_of_me"
+DOUBLE_INSTANCE_PATTERN = "there_is_exactly_two_of_me"
+
+def GetAddressRanges(test_base):
+ mem_regions = test_base.process.GetMemoryRegions()
+ test_base.assertTrue(len(mem_regions) > 0, "Make sure there are memory
regions")
+ addr_ranges = lldb.SBAddressRangeList()
+ for i in range(mem_regions.GetSize()):
+ region_info = lldb.SBMemoryRegionInfo()
+ if not mem_regions.GetMemoryRegionAtIndex(i, region_info):
+ continue
+ if not (region_info.IsReadable() and region_info.IsWritable()):
+ continue
+ if region_info.IsExecutable():
+ continue
+ if not region_info.GetName() or region_info.GetName() != "[heap]":
+ continue
+
+ addr = test_base.target.ResolveLoadAddress(region_info.GetRegionBase())
+ addr_range = lldb.SBAddressRange(
+ addr,
+ region_info.GetRegionEnd() - region_info.GetRegionBase(),
+ )
+ addr_ranges.Append(addr_range)
+ test_base.assertTrue(
+ len(addr_ranges) > 0, "Make sure there are valid address ranges"
+ )
+ return addr_ranges
diff --git a/lldb/test/API/python_api/find_in_memory/main.cpp
b/lldb/test/API/python_api/find_in_memory/main.cpp
new file mode 100644
index 0000000000000..1efaad9624ead
--- /dev/null
+++ b/lldb/test/API/python_api/find_in_memory/main.cpp
@@ -0,0 +1,21 @@
+#include <cstring>
+
+int main() {
+ constexpr char SINGLE_INSTANCE_STRING[] = "there_is_only_one_of_me";
+ constexpr size_t single_instance_size = sizeof(SINGLE_INSTANCE_STRING) + 1;
+ char *single_instance = new char[single_instance_size];
+ strcpy(single_instance, SINGLE_INSTANCE_STRING);
+
+ constexpr char DOUBLE_INSTANCE_STRING[] = "there_is_exactly_two_of_me";
+ constexpr size_t double_instance_size = sizeof(DOUBLE_INSTANCE_STRING) + 1;
+ char *double_instance = new char[double_instance_size];
+ char *double_instance_copy = new char[double_instance_size];
+ strcpy(double_instance, DOUBLE_INSTANCE_STRING);
+ strcpy(double_instance_copy, DOUBLE_INSTANCE_STRING);
+
+ delete[] single_instance; // break here
+ delete[] double_instance;
+ delete[] double_instance_copy;
+
+ return 0;
+}
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