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Diffstat (limited to 'source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp')
-rw-r--r--source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp239
1 files changed, 131 insertions, 108 deletions
diff --git a/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp b/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
index 786778e25a24..f3715147fa3e 100644
--- a/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
+++ b/source/Plugins/Process/Linux/NativeRegisterContextLinux_arm64.cpp
@@ -16,11 +16,11 @@
// C++ Includes
// Other libraries and framework includes
-#include "lldb/Core/DataBufferHeap.h"
-#include "lldb/Core/Error.h"
-#include "lldb/Core/Log.h"
#include "lldb/Core/RegisterValue.h"
#include "lldb/Host/common/NativeProcessProtocol.h"
+#include "lldb/Utility/DataBufferHeap.h"
+#include "lldb/Utility/Error.h"
+#include "lldb/Utility/Log.h"
#include "Plugins/Process/Linux/NativeProcessLinux.h"
#include "Plugins/Process/Linux/Procfs.h"
@@ -116,7 +116,6 @@ NativeRegisterContextLinux *
NativeRegisterContextLinux::CreateHostNativeRegisterContextLinux(
const ArchSpec &target_arch, NativeThreadProtocol &native_thread,
uint32_t concrete_frame_idx) {
- Log *log = ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_REGISTERS);
switch (target_arch.GetMachine()) {
case llvm::Triple::arm:
return new NativeRegisterContextLinux_arm(target_arch, native_thread,
@@ -125,12 +124,7 @@ NativeRegisterContextLinux::CreateHostNativeRegisterContextLinux(
return new NativeRegisterContextLinux_arm64(target_arch, native_thread,
concrete_frame_idx);
default:
- if (log)
- log->Printf("NativeRegisterContextLinux::%s() have no register context "
- "for architecture: %s\n",
- __FUNCTION__,
- target_arch.GetTriple().getArchName().str().c_str());
- return nullptr;
+ llvm_unreachable("have no register context for architecture");
}
}
@@ -152,13 +146,14 @@ NativeRegisterContextLinux_arm64::NativeRegisterContextLinux_arm64(
m_reg_info.gpr_flags = gpr_cpsr_arm64;
break;
default:
- assert(false && "Unhandled target architecture.");
+ llvm_unreachable("Unhandled target architecture.");
break;
}
::memset(&m_fpr, 0, sizeof(m_fpr));
::memset(&m_gpr_arm64, 0, sizeof(m_gpr_arm64));
::memset(&m_hwp_regs, 0, sizeof(m_hwp_regs));
+ ::memset(&m_hbr_regs, 0, sizeof(m_hbr_regs));
// 16 is just a maximum value, query hardware for actual watchpoint count
m_max_hwp_supported = 16;
@@ -366,10 +361,8 @@ bool NativeRegisterContextLinux_arm64::IsFPR(unsigned reg) const {
return (m_reg_info.first_fpr <= reg && reg <= m_reg_info.last_fpr);
}
-uint32_t
-NativeRegisterContextLinux_arm64::SetHardwareBreakpoint(lldb::addr_t addr,
- size_t size) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
+uint32_t NativeRegisterContextLinux_arm64::NumSupportedHardwareBreakpoints() {
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_BREAKPOINTS));
if (log)
log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
@@ -380,6 +373,21 @@ NativeRegisterContextLinux_arm64::SetHardwareBreakpoint(lldb::addr_t addr,
error = ReadHardwareDebugInfo();
if (error.Fail())
+ return 0;
+
+ return m_max_hbp_supported;
+}
+
+uint32_t
+NativeRegisterContextLinux_arm64::SetHardwareBreakpoint(lldb::addr_t addr,
+ size_t size) {
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_BREAKPOINTS));
+ LLDB_LOG(log, "addr: {0:x}, size: {1:x}", addr, size);
+
+ // Read hardware breakpoint and watchpoint information.
+ Error error = ReadHardwareDebugInfo();
+
+ if (error.Fail())
return LLDB_INVALID_INDEX32;
uint32_t control_value = 0, bp_index = 0;
@@ -398,55 +406,44 @@ NativeRegisterContextLinux_arm64::SetHardwareBreakpoint(lldb::addr_t addr,
control_value |= ((1 << size) - 1) << 5;
control_value |= (2 << 1) | 1;
- // Iterate over stored hardware breakpoints
- // Find a free bp_index or update reference count if duplicate.
+ // Iterate over stored breakpoints and find a free bp_index
bp_index = LLDB_INVALID_INDEX32;
for (uint32_t i = 0; i < m_max_hbp_supported; i++) {
if ((m_hbr_regs[i].control & 1) == 0) {
bp_index = i; // Mark last free slot
- } else if (m_hbr_regs[i].address == addr &&
- m_hbr_regs[i].control == control_value) {
- bp_index = i; // Mark duplicate index
- break; // Stop searching here
+ } else if (m_hbr_regs[i].address == addr) {
+ return LLDB_INVALID_INDEX32; // We do not support duplicate breakpoints.
}
}
if (bp_index == LLDB_INVALID_INDEX32)
return LLDB_INVALID_INDEX32;
- // Add new or update existing breakpoint
- if ((m_hbr_regs[bp_index].control & 1) == 0) {
- m_hbr_regs[bp_index].address = addr;
- m_hbr_regs[bp_index].control = control_value;
- m_hbr_regs[bp_index].refcount = 1;
+ // Update breakpoint in local cache
+ m_hbr_regs[bp_index].real_addr = addr;
+ m_hbr_regs[bp_index].address = addr;
+ m_hbr_regs[bp_index].control = control_value;
- // PTRACE call to set corresponding hardware breakpoint register.
- error = WriteHardwareDebugRegs(eDREGTypeBREAK);
+ // PTRACE call to set corresponding hardware breakpoint register.
+ error = WriteHardwareDebugRegs(eDREGTypeBREAK);
- if (error.Fail()) {
- m_hbr_regs[bp_index].address = 0;
- m_hbr_regs[bp_index].control &= ~1;
- m_hbr_regs[bp_index].refcount = 0;
+ if (error.Fail()) {
+ m_hbr_regs[bp_index].address = 0;
+ m_hbr_regs[bp_index].control &= ~1;
- return LLDB_INVALID_INDEX32;
- }
- } else
- m_hbr_regs[bp_index].refcount++;
+ return LLDB_INVALID_INDEX32;
+ }
return bp_index;
}
bool NativeRegisterContextLinux_arm64::ClearHardwareBreakpoint(
uint32_t hw_idx) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
-
- Error error;
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_BREAKPOINTS));
+ LLDB_LOG(log, "hw_idx: {0}", hw_idx);
// Read hardware breakpoint and watchpoint information.
- error = ReadHardwareDebugInfo();
+ Error error = ReadHardwareDebugInfo();
if (error.Fail())
return false;
@@ -454,39 +451,50 @@ bool NativeRegisterContextLinux_arm64::ClearHardwareBreakpoint(
if (hw_idx >= m_max_hbp_supported)
return false;
- // Update reference count if multiple references.
- if (m_hbr_regs[hw_idx].refcount > 1) {
- m_hbr_regs[hw_idx].refcount--;
- return true;
- } else if (m_hbr_regs[hw_idx].refcount == 1) {
- // Create a backup we can revert to in case of failure.
- lldb::addr_t tempAddr = m_hbr_regs[hw_idx].address;
- uint32_t tempControl = m_hbr_regs[hw_idx].control;
- uint32_t tempRefCount = m_hbr_regs[hw_idx].refcount;
+ // Create a backup we can revert to in case of failure.
+ lldb::addr_t tempAddr = m_hbr_regs[hw_idx].address;
+ uint32_t tempControl = m_hbr_regs[hw_idx].control;
- m_hbr_regs[hw_idx].control &= ~1;
- m_hbr_regs[hw_idx].address = 0;
- m_hbr_regs[hw_idx].refcount = 0;
+ m_hbr_regs[hw_idx].control &= ~1;
+ m_hbr_regs[hw_idx].address = 0;
- // PTRACE call to clear corresponding hardware breakpoint register.
- WriteHardwareDebugRegs(eDREGTypeBREAK);
+ // PTRACE call to clear corresponding hardware breakpoint register.
+ error = WriteHardwareDebugRegs(eDREGTypeBREAK);
- if (error.Fail()) {
- m_hbr_regs[hw_idx].control = tempControl;
- m_hbr_regs[hw_idx].address = tempAddr;
- m_hbr_regs[hw_idx].refcount = tempRefCount;
+ if (error.Fail()) {
+ m_hbr_regs[hw_idx].control = tempControl;
+ m_hbr_regs[hw_idx].address = tempAddr;
- return false;
- }
+ return false;
+ }
- return true;
+ return true;
+}
+
+Error NativeRegisterContextLinux_arm64::GetHardwareBreakHitIndex(
+ uint32_t &bp_index, lldb::addr_t trap_addr) {
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_BREAKPOINTS));
+
+ if (log)
+ log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
+
+ lldb::addr_t break_addr;
+
+ for (bp_index = 0; bp_index < m_max_hbp_supported; ++bp_index) {
+ break_addr = m_hbr_regs[bp_index].address;
+
+ if ((m_hbr_regs[bp_index].control & 0x1) && (trap_addr == break_addr)) {
+ m_hbr_regs[bp_index].hit_addr = trap_addr;
+ return Error();
+ }
}
- return false;
+ bp_index = LLDB_INVALID_INDEX32;
+ return Error();
}
-uint32_t NativeRegisterContextLinux_arm64::NumSupportedHardwareWatchpoints() {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
+Error NativeRegisterContextLinux_arm64::ClearAllHardwareBreakpoints() {
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_BREAKPOINTS));
if (log)
log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
@@ -497,22 +505,57 @@ uint32_t NativeRegisterContextLinux_arm64::NumSupportedHardwareWatchpoints() {
error = ReadHardwareDebugInfo();
if (error.Fail())
+ return error;
+
+ lldb::addr_t tempAddr = 0;
+ uint32_t tempControl = 0;
+
+ for (uint32_t i = 0; i < m_max_hbp_supported; i++) {
+ if (m_hbr_regs[i].control & 0x01) {
+ // Create a backup we can revert to in case of failure.
+ tempAddr = m_hbr_regs[i].address;
+ tempControl = m_hbr_regs[i].control;
+
+ // Clear watchpoints in local cache
+ m_hbr_regs[i].control &= ~1;
+ m_hbr_regs[i].address = 0;
+
+ // Ptrace call to update hardware debug registers
+ error = WriteHardwareDebugRegs(eDREGTypeBREAK);
+
+ if (error.Fail()) {
+ m_hbr_regs[i].control = tempControl;
+ m_hbr_regs[i].address = tempAddr;
+
+ return error;
+ }
+ }
+ }
+
+ return Error();
+}
+
+uint32_t NativeRegisterContextLinux_arm64::NumSupportedHardwareWatchpoints() {
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+
+ // Read hardware breakpoint and watchpoint information.
+ Error error = ReadHardwareDebugInfo();
+
+ if (error.Fail())
return 0;
+ LLDB_LOG(log, "{0}", m_max_hwp_supported);
return m_max_hwp_supported;
}
uint32_t NativeRegisterContextLinux_arm64::SetHardwareWatchpoint(
lldb::addr_t addr, size_t size, uint32_t watch_flags) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
-
- Error error;
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "addr: {0:x}, size: {1:x} watch_flags: {2:x}", addr, size,
+ watch_flags);
// Read hardware breakpoint and watchpoint information.
- error = ReadHardwareDebugInfo();
+ Error error = ReadHardwareDebugInfo();
if (error.Fail())
return LLDB_INVALID_INDEX32;
@@ -595,15 +638,11 @@ uint32_t NativeRegisterContextLinux_arm64::SetHardwareWatchpoint(
bool NativeRegisterContextLinux_arm64::ClearHardwareWatchpoint(
uint32_t wp_index) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
-
- Error error;
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}", wp_index);
// Read hardware breakpoint and watchpoint information.
- error = ReadHardwareDebugInfo();
+ Error error = ReadHardwareDebugInfo();
if (error.Fail())
return false;
@@ -633,15 +672,8 @@ bool NativeRegisterContextLinux_arm64::ClearHardwareWatchpoint(
}
Error NativeRegisterContextLinux_arm64::ClearAllHardwareWatchpoints() {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
-
- Error error;
-
// Read hardware breakpoint and watchpoint information.
- error = ReadHardwareDebugInfo();
+ Error error = ReadHardwareDebugInfo();
if (error.Fail())
return error;
@@ -676,10 +708,9 @@ Error NativeRegisterContextLinux_arm64::ClearAllHardwareWatchpoints() {
uint32_t
NativeRegisterContextLinux_arm64::GetWatchpointSize(uint32_t wp_index) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}", wp_index);
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
switch ((m_hwp_regs[wp_index].control >> 5) & 0xff) {
case 0x01:
return 1;
@@ -694,10 +725,8 @@ NativeRegisterContextLinux_arm64::GetWatchpointSize(uint32_t wp_index) {
}
}
bool NativeRegisterContextLinux_arm64::WatchpointIsEnabled(uint32_t wp_index) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}", wp_index);
if ((m_hwp_regs[wp_index].control & 0x1) == 0x1)
return true;
@@ -707,10 +736,8 @@ bool NativeRegisterContextLinux_arm64::WatchpointIsEnabled(uint32_t wp_index) {
Error NativeRegisterContextLinux_arm64::GetWatchpointHitIndex(
uint32_t &wp_index, lldb::addr_t trap_addr) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}, trap_addr: {1:x}", wp_index, trap_addr);
uint32_t watch_size;
lldb::addr_t watch_addr;
@@ -732,10 +759,8 @@ Error NativeRegisterContextLinux_arm64::GetWatchpointHitIndex(
lldb::addr_t
NativeRegisterContextLinux_arm64::GetWatchpointAddress(uint32_t wp_index) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}", wp_index);
if (wp_index >= m_max_hwp_supported)
return LLDB_INVALID_ADDRESS;
@@ -748,10 +773,8 @@ NativeRegisterContextLinux_arm64::GetWatchpointAddress(uint32_t wp_index) {
lldb::addr_t
NativeRegisterContextLinux_arm64::GetWatchpointHitAddress(uint32_t wp_index) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_WATCHPOINTS));
-
- if (log)
- log->Printf("NativeRegisterContextLinux_arm64::%s()", __FUNCTION__);
+ Log *log(ProcessPOSIXLog::GetLogIfAllCategoriesSet(POSIX_LOG_WATCHPOINTS));
+ LLDB_LOG(log, "wp_index: {0}", wp_index);
if (wp_index >= m_max_hwp_supported)
return LLDB_INVALID_ADDRESS;
generated by cgit v1.3 (git 2.53.0) at 2026-05-03 15:04:19 +0000