[lldb] [llvm] [lldb][FreeBSD][AArch64] Enable register field detection (PR #85058)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Mar 13 03:42:41 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-lldb
Author: David Spickett (DavidSpickett)
<details>
<summary>Changes</summary>
This extends the existing register fields support from AArch64 Linux
to AArch64 FreeBSD. So you will now see output like this:
```
(lldb) register read cpsr
cpsr = 0x60000200
= (N = 0, Z = 1, C = 1, V = 0, DIT = 0, SS = 0, IL = 0, SSBS = 0, D = 1, A = 0, I = 0, F = 0, nRW = 0, EL = 0, SP = 0)
```
Linux and FreeBSD both have HWCAP/HWCAP2 so the detection mechanism
is the same and I've renamed the detector class to reflect that.
I have confirmed that FreeBSD's treatment of CPSR (spsr as the kernel
calls it) is similair enough that we can use the same field information.
(see `sys/arm64/include/armreg.h` and `PSR_SETTABLE_64`)
For testing I've enabled the same live process test as Linux
and added a shell test using an existing FreeBSD core file.
Note that the latter does not need XML support because when reading
a core file we are not sending the information via target.xml,
it's just internal to LLDB.
The `svcr` and `mte_ctrl` registers will not appear on FreeBSD
at all so I've not made their information conditional, it'll just
never be used.
---
Patch is 31.18 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/85058.diff
20 Files Affected:
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h (+2-3)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm.cpp (+2-2)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp (+22-2)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.h (+1-1)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_mips64.cpp (+2-2)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_powerpc.cpp (+2-2)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp (+2-2)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.cpp (+4)
- (modified) lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h (+2)
- (modified) lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp (+8-8)
- (modified) lldb/source/Plugins/Process/Utility/AuxVector.h (+30-17)
- (modified) lldb/source/Plugins/Process/Utility/CMakeLists.txt (+1-1)
- (renamed) lldb/source/Plugins/Process/Utility/RegisterFlagsDetector_arm64.cpp (+24-22)
- (renamed) lldb/source/Plugins/Process/Utility/RegisterFlagsDetector_arm64.h (+10-8)
- (modified) lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_arm64.cpp (+10-8)
- (modified) lldb/source/Plugins/Process/elf-core/RegisterContextPOSIXCore_arm64.h (+2-2)
- (modified) lldb/test/API/commands/register/register/register_command/TestRegisters.py (+1-1)
- (added) lldb/test/Shell/Register/Core/aarch64-freebsd-register-fields.test (+15)
- (modified) llvm/docs/ReleaseNotes.rst (+3)
- (modified) llvm/utils/gn/secondary/lldb/source/Plugins/Process/Utility/BUILD.gn (+1-1)
``````````diff
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h
index 0000484beac999..b7f659ef24de2c 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD.h
@@ -9,14 +9,13 @@
#ifndef lldb_NativeRegisterContextFreeBSD_h
#define lldb_NativeRegisterContextFreeBSD_h
-#include "lldb/Host/common/NativeThreadProtocol.h"
-
#include "Plugins/Process/Utility/NativeRegisterContextRegisterInfo.h"
namespace lldb_private {
namespace process_freebsd {
class NativeProcessFreeBSD;
+class NativeThreadFreeBSD;
class NativeRegisterContextFreeBSD
: public virtual NativeRegisterContextRegisterInfo {
@@ -28,7 +27,7 @@ class NativeRegisterContextFreeBSD
// executable.
static NativeRegisterContextFreeBSD *
CreateHostNativeRegisterContextFreeBSD(const ArchSpec &target_arch,
- NativeThreadProtocol &native_thread);
+ NativeThreadFreeBSD &native_thread);
virtual llvm::Error
CopyHardwareWatchpointsFrom(NativeRegisterContextFreeBSD &source) = 0;
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm.cpp
index 2c50176643878d..f19085600d6c93 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm.cpp
@@ -29,12 +29,12 @@ using namespace lldb_private::process_freebsd;
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
return new NativeRegisterContextFreeBSD_arm(target_arch, native_thread);
}
NativeRegisterContextFreeBSD_arm::NativeRegisterContextFreeBSD_arm(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, new RegisterInfoPOSIX_arm(target_arch)) {}
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp
index 9db5970af653e3..28ea8b7ac11826 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.cpp
@@ -16,6 +16,7 @@
#include "Plugins/Process/FreeBSD/NativeProcessFreeBSD.h"
#include "Plugins/Process/POSIX/ProcessPOSIXLog.h"
+#include "Plugins/Process/Utility/RegisterFlagsDetector_arm64.h"
#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h"
// clang-format off
@@ -28,14 +29,29 @@ using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::process_freebsd;
+// A NativeRegisterContext is constructed per thread, but all threads' registers
+// will contain the same fields. Therefore this mutex prevents each instance
+// competing with the other, and subsequent instances from having to detect the
+// fields all over again.
+static std::mutex g_register_flags_detector_mutex;
+static Arm64RegisterFlagsDetector g_register_flags_detector;
+
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
+ std::lock_guard<std::mutex> lock(g_register_flags_detector_mutex);
+ if (!g_register_flags_detector.HasDetected()) {
+ NativeProcessFreeBSD &process = native_thread.GetProcess();
+ g_register_flags_detector.DetectFields(
+ process.GetAuxValue(AuxVector::AUXV_FREEBSD_AT_HWCAP).value_or(0),
+ process.GetAuxValue(AuxVector::AUXV_AT_HWCAP2).value_or(0));
+ }
+
return new NativeRegisterContextFreeBSD_arm64(target_arch, native_thread);
}
NativeRegisterContextFreeBSD_arm64::NativeRegisterContextFreeBSD_arm64(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, new RegisterInfoPOSIX_arm64(target_arch, 0))
#ifdef LLDB_HAS_FREEBSD_WATCHPOINT
@@ -43,6 +59,10 @@ NativeRegisterContextFreeBSD_arm64::NativeRegisterContextFreeBSD_arm64(
m_read_dbreg(false)
#endif
{
+ g_register_flags_detector.UpdateRegisterInfo(
+ GetRegisterInfoInterface().GetRegisterInfo(),
+ GetRegisterInfoInterface().GetRegisterCount());
+
::memset(&m_hwp_regs, 0, sizeof(m_hwp_regs));
::memset(&m_hbp_regs, 0, sizeof(m_hbp_regs));
}
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.h b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.h
index 799209e26e868d..ba876006c6c530 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.h
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_arm64.h
@@ -37,7 +37,7 @@ class NativeRegisterContextFreeBSD_arm64
public NativeRegisterContextDBReg_arm64 {
public:
NativeRegisterContextFreeBSD_arm64(const ArchSpec &target_arch,
- NativeThreadProtocol &native_thread);
+ NativeThreadFreeBSD &native_thread);
uint32_t GetRegisterSetCount() const override;
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_mips64.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_mips64.cpp
index 0349f13945e31c..090d0f3802c3bb 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_mips64.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_mips64.cpp
@@ -30,12 +30,12 @@ using namespace lldb_private::process_freebsd;
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
return new NativeRegisterContextFreeBSD_mips64(target_arch, native_thread);
}
NativeRegisterContextFreeBSD_mips64::NativeRegisterContextFreeBSD_mips64(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, new RegisterContextFreeBSD_mips64(target_arch)) {}
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_powerpc.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_powerpc.cpp
index bdb57251f706a4..fd5eb1ee2a1c84 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_powerpc.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_powerpc.cpp
@@ -67,7 +67,7 @@ static const RegisterSet g_reg_sets_powerpc[k_num_register_sets] = {
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
return new NativeRegisterContextFreeBSD_powerpc(target_arch, native_thread);
}
@@ -83,7 +83,7 @@ CreateRegisterInfoInterface(const ArchSpec &target_arch) {
}
NativeRegisterContextFreeBSD_powerpc::NativeRegisterContextFreeBSD_powerpc(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, CreateRegisterInfoInterface(target_arch)) {}
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp
index f4171a134aeb79..5eed2d02b0a8ce 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeRegisterContextFreeBSD_x86_64.cpp
@@ -237,7 +237,7 @@ static const RegisterSet g_reg_sets_x86_64[k_num_register_sets] = {
NativeRegisterContextFreeBSD *
NativeRegisterContextFreeBSD::CreateHostNativeRegisterContextFreeBSD(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread) {
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread) {
return new NativeRegisterContextFreeBSD_x86_64(target_arch, native_thread);
}
@@ -258,7 +258,7 @@ CreateRegisterInfoInterface(const ArchSpec &target_arch) {
}
NativeRegisterContextFreeBSD_x86_64::NativeRegisterContextFreeBSD_x86_64(
- const ArchSpec &target_arch, NativeThreadProtocol &native_thread)
+ const ArchSpec &target_arch, NativeThreadFreeBSD &native_thread)
: NativeRegisterContextRegisterInfo(
native_thread, CreateRegisterInfoInterface(target_arch)),
NativeRegisterContextDBReg_x86(native_thread), m_regset_offsets({0}) {
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.cpp b/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.cpp
index 449ec27e0da8fc..a0de7751c7e55c 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.cpp
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.cpp
@@ -316,6 +316,10 @@ NativeThreadFreeBSD::CopyWatchpointsFrom(NativeThreadFreeBSD &source) {
return s;
}
+NativeProcessFreeBSD &NativeThreadFreeBSD::GetProcess() {
+ return static_cast<NativeProcessFreeBSD &>(m_process);
+}
+
llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>>
NativeThreadFreeBSD::GetSiginfo() const {
Log *log = GetLog(POSIXLog::Process);
diff --git a/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h b/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h
index 6294a7a7096356..edfb07658e19c7 100644
--- a/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h
+++ b/lldb/source/Plugins/Process/FreeBSD/NativeThreadFreeBSD.h
@@ -47,6 +47,8 @@ class NativeThreadFreeBSD : public NativeThreadProtocol {
Status RemoveHardwareBreakpoint(lldb::addr_t addr) override;
+ NativeProcessFreeBSD &GetProcess();
+
llvm::Expected<std::unique_ptr<llvm::MemoryBuffer>>
GetSiginfo() const override;
diff --git a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
index 9b5f7aef1efe53..d72b6ce9b0c8e3 100644
--- a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
+++ b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
@@ -23,7 +23,7 @@
#include "Plugins/Process/Linux/Procfs.h"
#include "Plugins/Process/POSIX/ProcessPOSIXLog.h"
#include "Plugins/Process/Utility/MemoryTagManagerAArch64MTE.h"
-#include "Plugins/Process/Utility/RegisterFlagsLinux_arm64.h"
+#include "Plugins/Process/Utility/RegisterFlagsDetector_arm64.h"
#include "Plugins/Process/Utility/RegisterInfoPOSIX_arm64.h"
// System includes - They have to be included after framework includes because
@@ -72,8 +72,8 @@ using namespace lldb_private::process_linux;
// will contain the same fields. Therefore this mutex prevents each instance
// competing with the other, and subsequent instances from having to detect the
// fields all over again.
-static std::mutex g_register_flags_mutex;
-static LinuxArm64RegisterFlags g_register_flags;
+static std::mutex g_register_flags_detector_mutex;
+static Arm64RegisterFlagsDetector g_register_flags_detector;
std::unique_ptr<NativeRegisterContextLinux>
NativeRegisterContextLinux::CreateHostNativeRegisterContextLinux(
@@ -144,10 +144,10 @@ NativeRegisterContextLinux::CreateHostNativeRegisterContextLinux(
opt_regsets.Set(RegisterInfoPOSIX_arm64::eRegsetMaskTLS);
- std::lock_guard<std::mutex> lock(g_register_flags_mutex);
- if (!g_register_flags.HasDetected())
- g_register_flags.DetectFields(auxv_at_hwcap.value_or(0),
- auxv_at_hwcap2.value_or(0));
+ std::lock_guard<std::mutex> lock(g_register_flags_detector_mutex);
+ if (!g_register_flags_detector.HasDetected())
+ g_register_flags_detector.DetectFields(auxv_at_hwcap.value_or(0),
+ auxv_at_hwcap2.value_or(0));
auto register_info_up =
std::make_unique<RegisterInfoPOSIX_arm64>(target_arch, opt_regsets);
@@ -171,7 +171,7 @@ NativeRegisterContextLinux_arm64::NativeRegisterContextLinux_arm64(
: NativeRegisterContextRegisterInfo(native_thread,
register_info_up.release()),
NativeRegisterContextLinux(native_thread) {
- g_register_flags.UpdateRegisterInfo(
+ g_register_flags_detector.UpdateRegisterInfo(
GetRegisterInfoInterface().GetRegisterInfo(),
GetRegisterInfoInterface().GetRegisterCount());
diff --git a/lldb/source/Plugins/Process/Utility/AuxVector.h b/lldb/source/Plugins/Process/Utility/AuxVector.h
index 3b0f55d35e5d11..9e489b05ab5ee6 100644
--- a/lldb/source/Plugins/Process/Utility/AuxVector.h
+++ b/lldb/source/Plugins/Process/Utility/AuxVector.h
@@ -20,25 +20,34 @@ class AuxVector {
AuxVector(const lldb_private::DataExtractor &data);
/// Constants describing the type of entry.
- /// On Linux, running "LD_SHOW_AUXV=1 ./executable" will spew AUX
+ /// On Linux and FreeBSD, running "LD_SHOW_AUXV=1 ./executable" will spew AUX
/// information. Added AUXV prefix to avoid potential conflicts with system-
- /// defined macros
+ /// defined macros. For FreeBSD, the numbers can be found in sys/elf_common.h.
+ ///
+ /// Linux and FreeBSD values diverge, so the FreeBSD classes will convert
+ /// some entries to the Linux AT_ value so that LLDB only has to use
+ /// the constants listed here when asking the AuxVector for a value.
enum EntryType {
- AUXV_AT_NULL = 0, ///< End of auxv.
- AUXV_AT_IGNORE = 1, ///< Ignore entry.
- AUXV_AT_EXECFD = 2, ///< File descriptor of program.
- AUXV_AT_PHDR = 3, ///< Program headers.
- AUXV_AT_PHENT = 4, ///< Size of program header.
- AUXV_AT_PHNUM = 5, ///< Number of program headers.
- AUXV_AT_PAGESZ = 6, ///< Page size.
- AUXV_AT_BASE = 7, ///< Interpreter base address.
- AUXV_AT_FLAGS = 8, ///< Flags.
- AUXV_AT_ENTRY = 9, ///< Program entry point.
- AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
- AUXV_AT_UID = 11, ///< UID.
- AUXV_AT_EUID = 12, ///< Effective UID.
- AUXV_AT_GID = 13, ///< GID.
- AUXV_AT_EGID = 14, ///< Effective GID.
+ AUXV_AT_NULL = 0, ///< End of auxv.
+ AUXV_AT_IGNORE = 1, ///< Ignore entry.
+ AUXV_AT_EXECFD = 2, ///< File descriptor of program.
+ AUXV_AT_PHDR = 3, ///< Program headers.
+ AUXV_AT_PHENT = 4, ///< Size of program header.
+ AUXV_AT_PHNUM = 5, ///< Number of program headers.
+ AUXV_AT_PAGESZ = 6, ///< Page size.
+ AUXV_AT_BASE = 7, ///< Interpreter base address.
+ AUXV_AT_FLAGS = 8, ///< Flags.
+ AUXV_AT_ENTRY = 9, ///< Program entry point.
+ AUXV_AT_NOTELF = 10, ///< Set if program is not an ELF.
+ AUXV_AT_UID = 11, ///< UID.
+ AUXV_AT_EUID = 12, ///< Effective UID.
+ AUXV_AT_GID = 13, ///< GID.
+ AUXV_AT_EGID = 14, ///< Effective GID.
+
+ // At this point Linux and FreeBSD diverge and many of the following values
+ // are Linux specific. If you use them make sure you are in Linux specific
+ // code or they have the same value on other platforms.
+
AUXV_AT_CLKTCK = 17, ///< Clock frequency (e.g. times(2)).
AUXV_AT_PLATFORM = 15, ///< String identifying platform.
AUXV_AT_HWCAP =
@@ -60,6 +69,10 @@ class AuxVector {
AUXV_AT_L1D_CACHESHAPE = 35,
AUXV_AT_L2_CACHESHAPE = 36,
AUXV_AT_L3_CACHESHAPE = 37,
+
+ // Platform specific values which may overlap the Linux values.
+
+ AUXV_FREEBSD_AT_HWCAP = 25, ///< FreeBSD specific AT_HWCAP value.
};
std::optional<uint64_t> GetAuxValue(enum EntryType entry_type) const;
diff --git a/lldb/source/Plugins/Process/Utility/CMakeLists.txt b/lldb/source/Plugins/Process/Utility/CMakeLists.txt
index 37b53b7e3e7edd..5df4a9e5ac5c86 100644
--- a/lldb/source/Plugins/Process/Utility/CMakeLists.txt
+++ b/lldb/source/Plugins/Process/Utility/CMakeLists.txt
@@ -47,7 +47,7 @@ add_lldb_library(lldbPluginProcessUtility
RegisterContextThreadMemory.cpp
RegisterContextWindows_i386.cpp
RegisterContextWindows_x86_64.cpp
- RegisterFlagsLinux_arm64.cpp
+ RegisterFlagsDetector_arm64.cpp
RegisterInfos_x86_64_with_base_shared.cpp
RegisterInfoPOSIX_arm.cpp
RegisterInfoPOSIX_arm64.cpp
diff --git a/lldb/source/Plugins/Process/Utility/RegisterFlagsLinux_arm64.cpp b/lldb/source/Plugins/Process/Utility/RegisterFlagsDetector_arm64.cpp
similarity index 80%
rename from lldb/source/Plugins/Process/Utility/RegisterFlagsLinux_arm64.cpp
rename to lldb/source/Plugins/Process/Utility/RegisterFlagsDetector_arm64.cpp
index 51553817921f35..54c1aae36f231c 100644
--- a/lldb/source/Plugins/Process/Utility/RegisterFlagsLinux_arm64.cpp
+++ b/lldb/source/Plugins/Process/Utility/RegisterFlagsDetector_arm64.cpp
@@ -1,4 +1,4 @@
-//===-- RegisterFlagsLinux_arm64.cpp --------------------------------------===//
+//===-- RegisterFlagsDetector_arm64.cpp -----------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
@@ -6,11 +6,12 @@
//
//===----------------------------------------------------------------------===//
-#include "RegisterFlagsLinux_arm64.h"
+#include "RegisterFlagsDetector_arm64.h"
#include "lldb/lldb-private-types.h"
// This file is built on all systems because it is used by native processes and
// core files, so we manually define the needed HWCAP values here.
+// These values are the same for Linux and FreeBSD.
#define HWCAP_FPHP (1ULL << 9)
#define HWCAP_ASIMDHP (1ULL << 10)
@@ -24,34 +25,35 @@
using namespace lldb_private;
-LinuxArm64RegisterFlags::Fields
-LinuxArm64RegisterFlags::DetectSVCRFields(uint64_t hwcap, uint64_t hwcap2) {
+Arm64RegisterFlagsDetector::Fields
+Arm64RegisterFlagsDetector::DetectSVCRFields(uint64_t hwcap, uint64_t hwcap2) {
(void)hwcap;
(void)hwcap2;
- // Represents the pseudo register that lldb-server builds, which itself
- // matches the architectural register SCVR. The fields match SVCR in the Arm
- // manual.
+ // Represents the pseudo register that lldb-server on Linux builds, which
+ // itself matches the architectural register SCVR. The fields match SVCR in
+ // the Arm manual.
return {
{"ZA", 1},
{"SM", 0},
};
}
-LinuxArm64RegisterFlags::Fields
-LinuxArm64RegisterFlags::DetectMTECtrlFields(uint64_t hwcap, uint64_t hwcap2) {
+Arm64RegisterFlagsDetector::Fields
+Arm64RegisterFlagsDetector::DetectMTECtrlFields(uint64_t hwcap,
+ uint64_t hwcap2) {
(void)hwcap;
(void)hwcap2;
- // Represents the contents of NT_ARM_TAGGED_ADDR_CTRL and the value passed
- // to prctl(PR_TAGGED_ADDR_CTRL...). Fields are derived from the defines
- // used to build the value.
+ // Represents the contents of Linux's NT_ARM_TAGGED_ADDR_CTRL and the value
+ // passed to prctl(PR_TAGGED_ADDR_CTRL...). Fields are derived from the
+ // defines used to build the value.
return {{"TAGS", 3, 18}, // 16 bit bitfield shifted up by PR_MTE_TAG_SHIFT.
{"TCF_ASYNC", 2},
{"TCF_SYNC", 1},
{"TAGGED_ADDR_ENABLE", 0}};
}
-LinuxArm64RegisterFlags::Fields
-LinuxArm64RegisterFlags::DetectFPCRFields(uint64_t hwcap, uint64_t hwcap2) {
+Arm64RegisterFlagsDetector::Fields
+Arm64RegisterFlagsDetector::DetectFPCRFields(uint64_t hwcap, uint64_t hwcap2) {
std::vector<RegisterFlags::Field> fpcr_fields{
{"AHP", 26}, {"DN", 25}, {"FZ", 24}, {"RMode", 22, 23},
// Bits 21-20 are "Stride" which is unused in AArch64 state.
@@ -86,8 +88,8 @@ LinuxArm64RegisterFlags::DetectFPCRFields(uint64_t hwcap, uint64_t hwcap2) {
return fpcr_fields;
}
-LinuxArm64RegisterFlags...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/85058
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