[Lldb-commits] [lldb] 5fbcf67 - Revert "[lldb] Remove non address bits when looking up memory regions"
David Spickett via lldb-commits
lldb-commits at lists.llvm.org
Wed Nov 3 06:28:15 PDT 2021
Author: David Spickett
Date: 2021-11-03T13:27:41Z
New Revision: 5fbcf677347e38718461496d9e9e184a7a30c3fb
URL: https://github.com/llvm/llvm-project/commit/5fbcf677347e38718461496d9e9e184a7a30c3fb
DIFF: https://github.com/llvm/llvm-project/commit/5fbcf677347e38718461496d9e9e184a7a30c3fb.diff
LOG: Revert "[lldb] Remove non address bits when looking up memory regions"
This reverts commit 6f5ce43b433706c3ae5c37022d6c0964b6bfadf8 due to
build failure on Windows.
Added:
Modified:
lldb/include/lldb/Target/Process.h
lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.cpp
lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.h
lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
lldb/source/Plugins/Process/Windows/Common/ProcessWindows.h
lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
lldb/source/Plugins/Process/elf-core/ProcessElfCore.h
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp
lldb/source/Plugins/Process/mach-core/ProcessMachCore.h
lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
lldb/source/Plugins/Process/minidump/ProcessMinidump.h
lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
lldb/source/Plugins/Process/scripted/ScriptedProcess.h
lldb/source/Target/Process.cpp
Removed:
lldb/test/API/linux/aarch64/tagged_memory_region/Makefile
lldb/test/API/linux/aarch64/tagged_memory_region/TestAArch64LinuxTaggedMemoryRegion.py
lldb/test/API/linux/aarch64/tagged_memory_region/main.c
################################################################################
diff --git a/lldb/include/lldb/Target/Process.h b/lldb/include/lldb/Target/Process.h
index d36c60e24887d..e9743ed17dd46 100644
--- a/lldb/include/lldb/Target/Process.h
+++ b/lldb/include/lldb/Target/Process.h
@@ -1792,7 +1792,7 @@ class Process : public std::enable_shared_from_this<Process>,
///
/// If load_addr is within the address space the process has mapped
/// range_info will be filled in with the start and end of that range as
- /// well as the permissions for that range and range_info. GetMapped will
+ /// well as the permissions for that range and range_info.GetMapped will
/// return true.
///
/// If load_addr is outside any mapped region then range_info will have its
@@ -1801,21 +1801,23 @@ class Process : public std::enable_shared_from_this<Process>,
/// there are no valid mapped ranges between load_addr and the end of the
/// process address space.
///
- /// GetMemoryRegionInfo calls DoGetMemoryRegionInfo. Override that function in
- /// process subclasses.
+ /// GetMemoryRegionInfo will only return an error if it is unimplemented for
+ /// the current process.
///
/// \param[in] load_addr
- /// The load address to query the range_info for. May include non
- /// address bits, these will be removed by the the ABI plugin if there is
- /// one.
+ /// The load address to query the range_info for.
///
/// \param[out] range_info
/// An range_info value containing the details of the range.
///
/// \return
/// An error value.
- Status GetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info);
+ virtual Status GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo &range_info) {
+ Status error;
+ error.SetErrorString("Process::GetMemoryRegionInfo() not supported");
+ return error;
+ }
/// Obtain all the mapped memory regions within this process.
///
@@ -2635,26 +2637,6 @@ void PruneThreadPlans();
virtual size_t DoReadMemory(lldb::addr_t vm_addr, void *buf, size_t size,
Status &error) = 0;
- /// DoGetMemoryRegionInfo is called by GetMemoryRegionInfo after it has
- /// removed non address bits from load_addr. Override this method in
- /// subclasses of Process.
- ///
- /// See GetMemoryRegionInfo for details of the logic.
- ///
- /// \param[in] load_addr
- /// The load address to query the range_info for. (non address bits
- /// removed)
- ///
- /// \param[out] range_info
- /// An range_info value containing the details of the range.
- ///
- /// \return
- /// An error value.
- virtual Status DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info) {
- return Status("Process::DoGetMemoryRegionInfo() not supported");
- }
-
lldb::StateType GetPrivateState();
/// The "private" side of resuming a process. This doesn't alter the state
diff --git a/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.cpp b/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.cpp
index 31c0aa585d29d..91b3311dc8575 100644
--- a/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.cpp
+++ b/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.cpp
@@ -377,8 +377,8 @@ Status ProcessDebugger::DeallocateMemory(lldb::addr_t vm_addr) {
return result;
}
-Status ProcessDebugger::DoGetMemoryRegionInfo(lldb::addr_t vm_addr,
- MemoryRegionInfo &info) {
+Status ProcessDebugger::GetMemoryRegionInfo(lldb::addr_t vm_addr,
+ MemoryRegionInfo &info) {
Log *log = ProcessWindowsLog::GetLogIfAny(WINDOWS_LOG_MEMORY);
Status error;
llvm::sys::ScopedLock lock(m_mutex);
@@ -386,7 +386,7 @@ Status ProcessDebugger::DoGetMemoryRegionInfo(lldb::addr_t vm_addr,
if (!m_session_data) {
error.SetErrorString(
- "DoGetMemoryRegionInfo called with no debugging session.");
+ "GetMemoryRegionInfo called with no debugging session.");
LLDB_LOG(log, "error: {0}", error);
return error;
}
@@ -394,7 +394,7 @@ Status ProcessDebugger::DoGetMemoryRegionInfo(lldb::addr_t vm_addr,
lldb::process_t handle = process.GetNativeProcess().GetSystemHandle();
if (handle == nullptr || handle == LLDB_INVALID_PROCESS) {
error.SetErrorString(
- "DoGetMemoryRegionInfo called with an invalid target process.");
+ "GetMemoryRegionInfo called with an invalid target process.");
LLDB_LOG(log, "error: {0}", error);
return error;
}
diff --git a/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.h b/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.h
index 33b3b8fd82d7d..a4db76455ef21 100644
--- a/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.h
+++ b/lldb/source/Plugins/Process/Windows/Common/ProcessDebugger.h
@@ -75,8 +75,8 @@ class ProcessDebugger {
Status HaltProcess(bool &caused_stop);
- Status DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info);
+ Status GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo &range_info);
Status ReadMemory(lldb::addr_t addr, void *buf, size_t size,
size_t &bytes_read);
diff --git a/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp b/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
index c4903d65a54b6..97ba1bdc9ee9e 100644
--- a/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
+++ b/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.cpp
@@ -601,9 +601,9 @@ Status ProcessWindows::DoDeallocateMemory(lldb::addr_t ptr) {
return ProcessDebugger::DeallocateMemory(ptr);
}
-Status ProcessWindows::DoGetMemoryRegionInfo(lldb::addr_t vm_addr,
- MemoryRegionInfo &info) {
- return ProcessDebugger::DoGetMemoryRegionInfo(vm_addr, info);
+Status ProcessWindows::GetMemoryRegionInfo(lldb::addr_t vm_addr,
+ MemoryRegionInfo &info) {
+ return ProcessDebugger::GetMemoryRegionInfo(vm_addr, info);
}
lldb::addr_t ProcessWindows::GetImageInfoAddress() {
diff --git a/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.h b/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.h
index 6f6f93f588e33..fc83649818edd 100644
--- a/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.h
+++ b/lldb/source/Plugins/Process/Windows/Common/ProcessWindows.h
@@ -78,6 +78,8 @@ class ProcessWindows : public Process, public ProcessDebugger {
lldb::addr_t DoAllocateMemory(size_t size, uint32_t permissions,
Status &error) override;
Status DoDeallocateMemory(lldb::addr_t ptr) override;
+ Status GetMemoryRegionInfo(lldb::addr_t vm_addr,
+ MemoryRegionInfo &info) override;
lldb::addr_t GetImageInfoAddress() override;
@@ -101,10 +103,6 @@ class ProcessWindows : public Process, public ProcessDebugger {
Status EnableWatchpoint(Watchpoint *wp, bool notify = true) override;
Status DisableWatchpoint(Watchpoint *wp, bool notify = true) override;
-protected:
- Status DoGetMemoryRegionInfo(lldb::addr_t vm_addr,
- MemoryRegionInfo &info) override;
-
private:
struct WatchpointInfo {
uint32_t slot_id;
diff --git a/lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp b/lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
index 23b346d5c17f1..b852a01643753 100644
--- a/lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
+++ b/lldb/source/Plugins/Process/elf-core/ProcessElfCore.cpp
@@ -281,8 +281,8 @@ size_t ProcessElfCore::ReadMemory(lldb::addr_t addr, void *buf, size_t size,
return DoReadMemory(addr, buf, size, error);
}
-Status ProcessElfCore::DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo ®ion_info) {
+Status ProcessElfCore::GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo ®ion_info) {
region_info.Clear();
const VMRangeToPermissions::Entry *permission_entry =
m_core_range_infos.FindEntryThatContainsOrFollows(load_addr);
diff --git a/lldb/source/Plugins/Process/elf-core/ProcessElfCore.h b/lldb/source/Plugins/Process/elf-core/ProcessElfCore.h
index fd36e50278168..67df3c5fac76a 100644
--- a/lldb/source/Plugins/Process/elf-core/ProcessElfCore.h
+++ b/lldb/source/Plugins/Process/elf-core/ProcessElfCore.h
@@ -86,6 +86,10 @@ class ProcessElfCore : public lldb_private::PostMortemProcess {
size_t DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
lldb_private::Status &error) override;
+ lldb_private::Status
+ GetMemoryRegionInfo(lldb::addr_t load_addr,
+ lldb_private::MemoryRegionInfo ®ion_info) override;
+
lldb::addr_t GetImageInfoAddress() override;
lldb_private::ArchSpec GetArchitecture();
@@ -101,10 +105,6 @@ class ProcessElfCore : public lldb_private::PostMortemProcess {
bool DoUpdateThreadList(lldb_private::ThreadList &old_thread_list,
lldb_private::ThreadList &new_thread_list) override;
- lldb_private::Status
- DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- lldb_private::MemoryRegionInfo ®ion_info) override;
-
private:
struct NT_FILE_Entry {
lldb::addr_t start;
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
index ce97240e8d905..4f78ae428147c 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp
@@ -2903,8 +2903,8 @@ lldb::addr_t ProcessGDBRemote::DoAllocateMemory(size_t size,
return allocated_addr;
}
-Status ProcessGDBRemote::DoGetMemoryRegionInfo(addr_t load_addr,
- MemoryRegionInfo ®ion_info) {
+Status ProcessGDBRemote::GetMemoryRegionInfo(addr_t load_addr,
+ MemoryRegionInfo ®ion_info) {
Status error(m_gdb_comm.GetMemoryRegionInfo(load_addr, region_info));
return error;
diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
index 8134bc6b530d6..9e0583408e42a 100644
--- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
+++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.h
@@ -144,6 +144,9 @@ class ProcessGDBRemote : public Process,
lldb::addr_t DoAllocateMemory(size_t size, uint32_t permissions,
Status &error) override;
+ Status GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo ®ion_info) override;
+
Status DoDeallocateMemory(lldb::addr_t ptr) override;
// Process STDIO
@@ -421,9 +424,6 @@ class ProcessGDBRemote : public Process,
Status DoWriteMemoryTags(lldb::addr_t addr, size_t len, int32_t type,
const std::vector<uint8_t> &tags) override;
- Status DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo ®ion_info) override;
-
private:
// For ProcessGDBRemote only
std::string m_partial_profile_data;
diff --git a/lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp b/lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp
index 59c04590672d3..6aed04565eb01 100644
--- a/lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp
+++ b/lldb/source/Plugins/Process/mach-core/ProcessMachCore.cpp
@@ -633,8 +633,8 @@ size_t ProcessMachCore::DoReadMemory(addr_t addr, void *buf, size_t size,
return bytes_read;
}
-Status ProcessMachCore::DoGetMemoryRegionInfo(addr_t load_addr,
- MemoryRegionInfo ®ion_info) {
+Status ProcessMachCore::GetMemoryRegionInfo(addr_t load_addr,
+ MemoryRegionInfo ®ion_info) {
region_info.Clear();
const VMRangeToPermissions::Entry *permission_entry =
m_core_range_infos.FindEntryThatContainsOrFollows(load_addr);
diff --git a/lldb/source/Plugins/Process/mach-core/ProcessMachCore.h b/lldb/source/Plugins/Process/mach-core/ProcessMachCore.h
index b5ca515a7d3fb..e55bfcfcc723b 100644
--- a/lldb/source/Plugins/Process/mach-core/ProcessMachCore.h
+++ b/lldb/source/Plugins/Process/mach-core/ProcessMachCore.h
@@ -68,6 +68,10 @@ class ProcessMachCore : public lldb_private::PostMortemProcess {
size_t DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
lldb_private::Status &error) override;
+ lldb_private::Status
+ GetMemoryRegionInfo(lldb::addr_t load_addr,
+ lldb_private::MemoryRegionInfo ®ion_info) override;
+
lldb::addr_t GetImageInfoAddress() override;
protected:
@@ -80,10 +84,6 @@ class ProcessMachCore : public lldb_private::PostMortemProcess {
lldb_private::ObjectFile *GetCoreObjectFile();
- lldb_private::Status
- DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- lldb_private::MemoryRegionInfo ®ion_info) override;
-
private:
bool GetDynamicLoaderAddress(lldb::addr_t addr);
diff --git a/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
index 736cfa0700886..08cf58b0a84a1 100644
--- a/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
+++ b/lldb/source/Plugins/Process/minidump/ProcessMinidump.cpp
@@ -439,8 +439,8 @@ void ProcessMinidump::BuildMemoryRegions() {
llvm::sort(*m_memory_regions);
}
-Status ProcessMinidump::DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo ®ion) {
+Status ProcessMinidump::GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo ®ion) {
BuildMemoryRegions();
region = MinidumpParser::GetMemoryRegionInfo(*m_memory_regions, load_addr);
return Status();
diff --git a/lldb/source/Plugins/Process/minidump/ProcessMinidump.h b/lldb/source/Plugins/Process/minidump/ProcessMinidump.h
index 5360269199cdd..3501d38a0f27e 100644
--- a/lldb/source/Plugins/Process/minidump/ProcessMinidump.h
+++ b/lldb/source/Plugins/Process/minidump/ProcessMinidump.h
@@ -75,6 +75,9 @@ class ProcessMinidump : public PostMortemProcess {
ArchSpec GetArchitecture();
+ Status GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo &range_info) override;
+
Status GetMemoryRegions(
lldb_private::MemoryRegionInfos ®ion_list) override;
@@ -95,9 +98,6 @@ class ProcessMinidump : public PostMortemProcess {
bool DoUpdateThreadList(ThreadList &old_thread_list,
ThreadList &new_thread_list) override;
- Status DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info) override;
-
void ReadModuleList();
lldb::ModuleSP GetOrCreateModule(lldb_private::UUID minidump_uuid,
diff --git a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
index 63c68c2a20236..c0eefbf60337c 100644
--- a/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
+++ b/lldb/source/Plugins/Process/scripted/ScriptedProcess.cpp
@@ -249,8 +249,8 @@ ArchSpec ScriptedProcess::GetArchitecture() {
return GetTarget().GetArchitecture();
}
-Status ScriptedProcess::DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo ®ion) {
+Status ScriptedProcess::GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo ®ion) {
CheckInterpreterAndScriptObject();
Status error;
diff --git a/lldb/source/Plugins/Process/scripted/ScriptedProcess.h b/lldb/source/Plugins/Process/scripted/ScriptedProcess.h
index fd4a94b9b6adb..68cc6aa372104 100644
--- a/lldb/source/Plugins/Process/scripted/ScriptedProcess.h
+++ b/lldb/source/Plugins/Process/scripted/ScriptedProcess.h
@@ -86,6 +86,9 @@ class ScriptedProcess : public Process {
ArchSpec GetArchitecture();
+ Status GetMemoryRegionInfo(lldb::addr_t load_addr,
+ MemoryRegionInfo &range_info) override;
+
Status
GetMemoryRegions(lldb_private::MemoryRegionInfos ®ion_list) override;
@@ -99,9 +102,6 @@ class ScriptedProcess : public Process {
bool DoUpdateThreadList(ThreadList &old_thread_list,
ThreadList &new_thread_list) override;
- Status DoGetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info) override;
-
private:
friend class ScriptedThread;
diff --git a/lldb/source/Target/Process.cpp b/lldb/source/Target/Process.cpp
index 1ae82289bdbfe..d901d523a1036 100644
--- a/lldb/source/Target/Process.cpp
+++ b/lldb/source/Target/Process.cpp
@@ -5896,13 +5896,6 @@ Process::AdvanceAddressToNextBranchInstruction(Address default_stop_addr,
return retval;
}
-Status Process::GetMemoryRegionInfo(lldb::addr_t load_addr,
- MemoryRegionInfo &range_info) {
- if (auto abi = GetABI())
- load_addr = abi->FixDataAddress(load_addr);
- return DoGetMemoryRegionInfo(load_addr, range_info);
-}
-
Status
Process::GetMemoryRegions(lldb_private::MemoryRegionInfos ®ion_list) {
diff --git a/lldb/test/API/linux/aarch64/tagged_memory_region/Makefile b/lldb/test/API/linux/aarch64/tagged_memory_region/Makefile
deleted file mode 100644
index 10495940055b6..0000000000000
--- a/lldb/test/API/linux/aarch64/tagged_memory_region/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-C_SOURCES := main.c
-
-include Makefile.rules
diff --git a/lldb/test/API/linux/aarch64/tagged_memory_region/TestAArch64LinuxTaggedMemoryRegion.py b/lldb/test/API/linux/aarch64/tagged_memory_region/TestAArch64LinuxTaggedMemoryRegion.py
deleted file mode 100644
index b175f6234b10b..0000000000000
--- a/lldb/test/API/linux/aarch64/tagged_memory_region/TestAArch64LinuxTaggedMemoryRegion.py
+++ /dev/null
@@ -1,42 +0,0 @@
-"""
-Test that "memory region" lookup uses the ABI plugin to remove
-non address bits from addresses before lookup.
-"""
-
-
-
-import lldb
-from lldbsuite.test.decorators import *
-from lldbsuite.test.lldbtest import *
-from lldbsuite.test import lldbutil
-
-
-class AArch64LinuxTaggedMemoryRegionTestCase(TestBase):
-
- mydir = TestBase.compute_mydir(__file__)
-
- NO_DEBUG_INFO_TESTCASE = True
-
- # AArch64 Linux always enables the top byte ignore feature
- @skipUnlessArch("aarch64")
- @skipUnlessPlatform(["linux"])
- def test_mte_regions(self):
- self.build()
- self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
-
- lldbutil.run_break_set_by_file_and_line(self, "main.c",
- line_number('main.c', '// Set break point at this line.'),
- num_expected_locations=1)
-
- self.runCmd("run", RUN_SUCCEEDED)
-
- if self.process().GetState() == lldb.eStateExited:
- self.fail("Test program failed to run.")
-
- self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
- substrs=['stopped',
- 'stop reason = breakpoint'])
-
- # Despite the non address bits we should find a region
- self.expect("memory region the_page", patterns=[
- "\[0x[0-9A-Fa-f]+-0x[0-9A-Fa-f]+\) r-x"])
diff --git a/lldb/test/API/linux/aarch64/tagged_memory_region/main.c b/lldb/test/API/linux/aarch64/tagged_memory_region/main.c
deleted file mode 100644
index 29f99d73e12d1..0000000000000
--- a/lldb/test/API/linux/aarch64/tagged_memory_region/main.c
+++ /dev/null
@@ -1,17 +0,0 @@
-#include <asm/hwcap.h>
-#include <sys/auxv.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-int main(int argc, char const *argv[]) {
- void *the_page = mmap(0, sysconf(_SC_PAGESIZE), PROT_READ | PROT_EXEC,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if (the_page == MAP_FAILED)
- return 1;
-
- // Put something in the top byte (AArch64 Linux always enables top byte
- // ignore)
- the_page = (void *)((size_t)the_page | ((size_t)0x34 << 56));
-
- return 0; // Set break point at this line.
-}
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