https://github.com/jasonmolenda created
https://github.com/llvm/llvm-project/pull/126604
A DriverKit process is a kernel extension that runs in userland, instead of
running in the kernel address space/priv levels, they've been around a couple
of years. From lldb's perspective a DriverKit process is no different from any
other userland level process, but it has a different Triple so we need to
handle those cases in the lldb codebase. Some of the DriverKit triple handling
had been upstreamed to llvm-project, but I noticed a few cases that had not
yet. Cleaning that up.
>From a8323ec70bc4c40b02272fa540b1b00fe69c88d5 Mon Sep 17 00:00:00 2001
From: Jason Molenda <jmole...@apple.com>
Date: Mon, 10 Feb 2025 13:41:55 -0800
Subject: [PATCH] [lldb] [darwin] Upstream a few DriverKit cases
A DriverKit process is a kernel extension that runs in userland,
instead of running in the kernel address space/priv levels, they've
been around a couple of years. From lldb's perspective a DriverKit
process is no different from any other userland level process, but
it has a different Triple so we need to handle those cases in the
lldb codebase. Some of the DriverKit triple handling had been
upstreamed to llvm-project, but I noticed a few cases that had not
yet. Cleaning that up.
---
.../Darwin-Kernel/DynamicLoaderDarwinKernel.cpp | 6 ++++--
.../DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp | 2 ++
.../DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp | 3 ++-
.../DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp | 3 ++-
.../source/Plugins/Platform/MacOSX/PlatformDarwinKernel.cpp | 1 +
.../Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.cpp | 3 ++-
lldb/source/Utility/ArchSpec.cpp | 6 ++++++
lldb/unittests/Utility/ArchSpecTest.cpp | 6 ++++++
8 files changed, 25 insertions(+), 5 deletions(-)
diff --git
a/lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
b/lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
index ab013e79047ea30..b8941dae0107838 100644
---
a/lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
+++
b/lldb/source/Plugins/DynamicLoader/Darwin-Kernel/DynamicLoaderDarwinKernel.cpp
@@ -168,8 +168,9 @@ DynamicLoader
*DynamicLoaderDarwinKernel::CreateInstance(Process *process,
case llvm::Triple::IOS:
case llvm::Triple::TvOS:
case llvm::Triple::WatchOS:
- case llvm::Triple::XROS:
case llvm::Triple::BridgeOS:
+ case llvm::Triple::DriverKit:
+ case llvm::Triple::XROS:
if (triple_ref.getVendor() != llvm::Triple::Apple) {
return nullptr;
}
@@ -243,6 +244,7 @@
DynamicLoaderDarwinKernel::SearchForKernelWithDebugHints(Process *process) {
Status read_err;
addr_t kernel_addresses_64[] = {
0xfffffff000002010ULL,
+ 0xfffffe0000004010ULL, // newest arm64 devices, large memory support
0xfffffff000004010ULL, // newest arm64 devices
0xffffff8000004010ULL, // 2014-2015-ish arm64 devices
0xffffff8000002010ULL, // oldest arm64 devices
@@ -1092,7 +1094,7 @@ void
DynamicLoaderDarwinKernel::LoadKernelModuleIfNeeded() {
static ConstString arm64_T1Sz_value("gT1Sz");
const Symbol *symbol =
m_kernel.GetModule()->FindFirstSymbolWithNameAndType(
- kext_summary_symbol, eSymbolTypeData);
+ kext_summary_symbol, eSymbolTypeAny);
if (symbol) {
m_kext_summary_header_ptr_addr = symbol->GetAddress();
// Update all image infos
diff --git
a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
index 14d05a1a4494cfe..f9b49c50355d5a1 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp
@@ -419,6 +419,8 @@ bool DynamicLoaderDarwin::JSONImageInformationIntoImageInfo(
image_infos[i].os_type = llvm::Triple::WatchOS;
else if (os_name == "bridgeos")
image_infos[i].os_type = llvm::Triple::BridgeOS;
+ else if (os_name == "driverkit")
+ image_infos[i].os_type = llvm::Triple::DriverKit;
else if (os_name == "xros")
image_infos[i].os_type = llvm::Triple::XROS;
else if (os_name == "maccatalyst") {
diff --git
a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
index 5b11059bcc50cbb..08bef4999eb9adc 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp
@@ -55,8 +55,9 @@ DynamicLoader *DynamicLoaderMacOS::CreateInstance(Process
*process,
case llvm::Triple::IOS:
case llvm::Triple::TvOS:
case llvm::Triple::WatchOS:
- case llvm::Triple::XROS:
case llvm::Triple::BridgeOS:
+ case llvm::Triple::DriverKit:
+ case llvm::Triple::XROS:
create = triple_ref.getVendor() == llvm::Triple::Apple;
break;
default:
diff --git
a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
index 8fc77cbe1170129..b05ed1ce2c8230b 100644
--- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
+++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp
@@ -75,8 +75,9 @@ DynamicLoader
*DynamicLoaderMacOSXDYLD::CreateInstance(Process *process,
case llvm::Triple::IOS:
case llvm::Triple::TvOS:
case llvm::Triple::WatchOS:
- case llvm::Triple::XROS:
case llvm::Triple::BridgeOS:
+ case llvm::Triple::DriverKit:
+ case llvm::Triple::XROS:
create = triple_ref.getVendor() == llvm::Triple::Apple;
break;
default:
diff --git a/lldb/source/Plugins/Platform/MacOSX/PlatformDarwinKernel.cpp
b/lldb/source/Plugins/Platform/MacOSX/PlatformDarwinKernel.cpp
index 605e3d570496914..4fbead97e9c1afd 100644
--- a/lldb/source/Plugins/Platform/MacOSX/PlatformDarwinKernel.cpp
+++ b/lldb/source/Plugins/Platform/MacOSX/PlatformDarwinKernel.cpp
@@ -129,6 +129,7 @@ PlatformSP PlatformDarwinKernel::CreateInstance(bool force,
case llvm::Triple::XROS:
case llvm::Triple::TvOS:
case llvm::Triple::BridgeOS:
+ case llvm::Triple::DriverKit:
break;
// Only accept "vendor" for vendor if the host is Apple and it "unknown"
// wasn't specified (it was just returned because it was NOT specified)
diff --git a/lldb/source/Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.cpp
b/lldb/source/Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.cpp
index e4324f0a52a2b3e..b23f64210cc80cf 100644
--- a/lldb/source/Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.cpp
+++ b/lldb/source/Plugins/SystemRuntime/MacOSX/SystemRuntimeMacOSX.cpp
@@ -62,8 +62,9 @@ SystemRuntime *SystemRuntimeMacOSX::CreateInstance(Process
*process) {
case llvm::Triple::IOS:
case llvm::Triple::TvOS:
case llvm::Triple::WatchOS:
- case llvm::Triple::XROS:
case llvm::Triple::BridgeOS:
+ case llvm::Triple::DriverKit:
+ case llvm::Triple::XROS:
create = triple_ref.getVendor() == llvm::Triple::Apple;
break;
default:
diff --git a/lldb/source/Utility/ArchSpec.cpp b/lldb/source/Utility/ArchSpec.cpp
index b13e8ff1ec373de..495215459336a75 100644
--- a/lldb/source/Utility/ArchSpec.cpp
+++ b/lldb/source/Utility/ArchSpec.cpp
@@ -1040,6 +1040,12 @@ bool ArchSpec::IsMatch(const ArchSpec &rhs, MatchType
match) const {
rhs_triple_os == llvm::Triple::IOS &&
rhs_triple_env == llvm::Triple::MacABI))
return true;
+ // x86_64-apple-driverkit, x86_64-apple-macosx are compatible, no match.
+ if ((lhs_triple_os == llvm::Triple::DriverKit &&
+ rhs_triple_os == llvm::Triple::MacOSX) ||
+ (lhs_triple_os == llvm::Triple::MacOSX &&
+ rhs_triple_os == llvm::Triple::DriverKit))
+ return true;
}
// x86_64-apple-ios-macabi and x86_64-apple-ios are not compatible.
diff --git a/lldb/unittests/Utility/ArchSpecTest.cpp
b/lldb/unittests/Utility/ArchSpecTest.cpp
index 74a4b48456b0168..2c78629849c642d 100644
--- a/lldb/unittests/Utility/ArchSpecTest.cpp
+++ b/lldb/unittests/Utility/ArchSpecTest.cpp
@@ -400,6 +400,12 @@ TEST(ArchSpecTest, Compatibility) {
B.MergeFrom(A);
ASSERT_TRUE(B.IsExactMatch(C));
}
+ {
+ ArchSpec A("x86_64-apple-driverkit19.0");
+ ArchSpec B("x86_64-apple-macosx10.15.0");
+ ASSERT_FALSE(A.IsExactMatch(B));
+ ASSERT_TRUE(A.IsCompatibleMatch(B));
+ }
}
TEST(ArchSpecTest, OperatorBool) {
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