Revert "[lldb][RISCV] fix LR/SC atomic sequence handling in lldb-server" #145597
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@llvm/pr-subscribers-lldb Author: Jonas Devlieghere (JDevlieghere) ChangesReverts llvm/llvm-project#127505 because Patch is 47.24 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/145597.diff 19 Files Affected:
diff --git a/lldb/include/lldb/Core/EmulateInstruction.h b/lldb/include/lldb/Core/EmulateInstruction.h
index a9fd4543cbbcb..b459476883fc5 100644
--- a/lldb/include/lldb/Core/EmulateInstruction.h
+++ b/lldb/include/lldb/Core/EmulateInstruction.h
@@ -22,8 +22,6 @@
#include "lldb/lldb-private-types.h"
#include "lldb/lldb-types.h"
-#include "llvm/Support/Error.h"
-
#include <cstddef>
#include <cstdint>
@@ -34,38 +32,6 @@ class RegisterValue;
class Stream;
class Target;
class UnwindPlan;
-class EmulateInstruction;
-
-using BreakpointLocations = std::vector<lldb::addr_t>;
-
-class SingleStepBreakpointLocationsPredictor {
-public:
- SingleStepBreakpointLocationsPredictor(
- std::unique_ptr<EmulateInstruction> emulator_up)
- : m_emulator_up{std::move(emulator_up)} {}
-
- virtual BreakpointLocations GetBreakpointLocations(Status &status);
-
- virtual llvm::Expected<unsigned>
- GetBreakpointSize([[maybe_unused]] lldb::addr_t bp_addr) {
- return 4;
- }
-
- virtual ~SingleStepBreakpointLocationsPredictor() = default;
-
-protected:
- // This function retrieves the address of the next instruction as it appears
- // in the binary file. Essentially, it reads the value of the PC register,
- // determines the size of the current instruction (where the PC is pointing),
- // and returns the sum of these two values.
- lldb::addr_t GetNextInstructionAddress(Status &error);
-
- lldb::addr_t GetBreakpointLocationAddress(lldb::addr_t entry_pc,
- Status &error);
-
- std::unique_ptr<EmulateInstruction> m_emulator_up;
- bool m_emulation_result = false;
-};
/// \class EmulateInstruction EmulateInstruction.h
/// "lldb/Core/EmulateInstruction.h"
@@ -531,19 +497,7 @@ class EmulateInstruction : public PluginInterface {
static uint32_t GetInternalRegisterNumber(RegisterContext *reg_ctx,
const RegisterInfo ®_info);
- static std::unique_ptr<SingleStepBreakpointLocationsPredictor>
- CreateBreakpointLocationPredictor(
- std::unique_ptr<EmulateInstruction> emulator_up);
-
- // Helper functions
- std::optional<lldb::addr_t> ReadPC();
- bool WritePC(lldb::addr_t addr);
-
protected:
- using BreakpointLocationsPredictorCreator =
- std::function<std::unique_ptr<SingleStepBreakpointLocationsPredictor>(
- std::unique_ptr<EmulateInstruction>)>;
-
ArchSpec m_arch;
void *m_baton = nullptr;
ReadMemoryCallback m_read_mem_callback = &ReadMemoryDefault;
@@ -554,21 +508,6 @@ class EmulateInstruction : public PluginInterface {
Opcode m_opcode;
private:
- virtual BreakpointLocationsPredictorCreator
- GetSingleStepBreakpointLocationsPredictorCreator() {
- if (!m_arch.IsMIPS() && !m_arch.GetTriple().isPPC64() &&
- !m_arch.GetTriple().isLoongArch()) {
- // Unsupported architecture
- return [](std::unique_ptr<EmulateInstruction> emulator_up) {
- return nullptr;
- };
- }
- return [](std::unique_ptr<EmulateInstruction> emulator_up) {
- return std::make_unique<SingleStepBreakpointLocationsPredictor>(
- std::move(emulator_up));
- };
- }
-
// For EmulateInstruction only
EmulateInstruction(const EmulateInstruction &) = delete;
const EmulateInstruction &operator=(const EmulateInstruction &) = delete;
diff --git a/lldb/source/Core/EmulateInstruction.cpp b/lldb/source/Core/EmulateInstruction.cpp
index 634ce1075d54b..d240b4d3b3310 100644
--- a/lldb/source/Core/EmulateInstruction.cpp
+++ b/lldb/source/Core/EmulateInstruction.cpp
@@ -588,99 +588,7 @@ EmulateInstruction::GetInternalRegisterNumber(RegisterContext *reg_ctx,
return LLDB_INVALID_REGNUM;
}
-std::unique_ptr<SingleStepBreakpointLocationsPredictor>
-EmulateInstruction::CreateBreakpointLocationPredictor(
- std::unique_ptr<EmulateInstruction> emulator_up) {
- auto creator =
- emulator_up->GetSingleStepBreakpointLocationsPredictorCreator();
- return creator(std::move(emulator_up));
-}
-
-std::optional<lldb::addr_t> EmulateInstruction::ReadPC() {
- bool success = false;
- auto addr = ReadRegisterUnsigned(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC,
- LLDB_INVALID_ADDRESS, &success);
- return success ? std::optional<addr_t>(addr) : std::nullopt;
-}
-
-bool EmulateInstruction::WritePC(lldb::addr_t addr) {
- EmulateInstruction::Context ctx;
- ctx.type = eContextAdvancePC;
- ctx.SetNoArgs();
- return WriteRegisterUnsigned(ctx, eRegisterKindGeneric,
- LLDB_REGNUM_GENERIC_PC, addr);
-}
-
bool EmulateInstruction::CreateFunctionEntryUnwind(UnwindPlan &unwind_plan) {
unwind_plan.Clear();
return false;
}
-
-BreakpointLocations
-SingleStepBreakpointLocationsPredictor::GetBreakpointLocations(Status &status) {
- if (!m_emulator_up->ReadInstruction()) {
- // try to get at least the size of next instruction to set breakpoint.
- lldb::addr_t next_pc = GetNextInstructionAddress(status);
- return BreakpointLocations{next_pc};
- }
-
- auto entry_pc = m_emulator_up->ReadPC();
- if (!entry_pc) {
- status = Status("Can't read PC");
- return {};
- }
-
- m_emulation_result = m_emulator_up->EvaluateInstruction(
- eEmulateInstructionOptionAutoAdvancePC);
-
- lldb::addr_t next_pc = GetBreakpointLocationAddress(*entry_pc, status);
- return BreakpointLocations{next_pc};
-}
-
-lldb::addr_t SingleStepBreakpointLocationsPredictor::GetNextInstructionAddress(
- Status &error) {
- auto instr_size = m_emulator_up->GetLastInstrSize();
- if (!instr_size) {
- error = Status("Read instruction failed!");
- return LLDB_INVALID_ADDRESS;
- }
-
- auto pc = m_emulator_up->ReadPC();
- if (!pc) {
- error = Status("Can't read PC");
- return LLDB_INVALID_ADDRESS;
- }
-
- lldb::addr_t next_pc = *pc + *instr_size;
- return next_pc;
-}
-
-lldb::addr_t
-SingleStepBreakpointLocationsPredictor::GetBreakpointLocationAddress(
- lldb::addr_t entry_pc, Status &error) {
- auto addr = m_emulator_up->ReadPC();
- if (!addr) {
- error = Status("Can't read PC");
- return LLDB_INVALID_ADDRESS;
- }
- lldb::addr_t pc = *addr;
-
- if (m_emulation_result) {
- assert(entry_pc != pc && "Emulation was successfull but PC wasn't updated");
- return pc;
- }
-
- if (entry_pc == pc) {
- // Emulate instruction failed and it hasn't changed PC. Advance PC with
- // the size of the current opcode because the emulation of all
- // PC modifying instruction should be successful. The failure most
- // likely caused by an unsupported instruction which does not modify PC.
- return pc + m_emulator_up->GetOpcode().GetByteSize();
- }
-
- // The instruction emulation failed after it modified the PC. It is an
- // unknown error where we can't continue because the next instruction is
- // modifying the PC but we don't know how.
- error = Status("Instruction emulation failed unexpectedly.");
- return LLDB_INVALID_ADDRESS;
-}
diff --git a/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp b/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
index 89da4d200699f..32975d88af46e 100644
--- a/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
+++ b/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.cpp
@@ -14471,16 +14471,3 @@ bool EmulateInstructionARM::CreateFunctionEntryUnwind(UnwindPlan &unwind_plan) {
unwind_plan.SetReturnAddressRegister(dwarf_lr);
return true;
}
-
-llvm::Expected<unsigned>
-ARMSingleStepBreakpointLocationsPredictor::GetBreakpointSize(
- lldb::addr_t bp_addr) {
- auto flags = m_emulator_up->ReadRegisterUnsigned(
- eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FLAGS, LLDB_INVALID_ADDRESS,
- nullptr);
- if (flags == LLDB_INVALID_ADDRESS)
- return llvm::createStringError(llvm::inconvertibleErrorCode(),
- "Reading flags failed!");
-
- return (flags & 0x20) ? /* Thumb mode */ 2 : /* Arm mode */ 4;
-}
diff --git a/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.h b/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.h
index 7931e0e648fb0..9eca0288607c1 100644
--- a/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.h
+++ b/lldb/source/Plugins/Instruction/ARM/EmulateInstructionARM.h
@@ -16,16 +16,6 @@
namespace lldb_private {
-class ARMSingleStepBreakpointLocationsPredictor
- : public SingleStepBreakpointLocationsPredictor {
-public:
- ARMSingleStepBreakpointLocationsPredictor(
- std::unique_ptr<EmulateInstruction> emulator_up)
- : SingleStepBreakpointLocationsPredictor{std::move(emulator_up)} {}
-
- llvm::Expected<unsigned> GetBreakpointSize(lldb::addr_t bp_addr) override;
-};
-
// ITSession - Keep track of the IT Block progression.
class ITSession {
public:
@@ -780,14 +770,6 @@ class EmulateInstructionARM : public EmulateInstruction {
// B6.2.13 SUBS PC, LR and related instructions
bool EmulateSUBSPcLrEtc(const uint32_t opcode, const ARMEncoding encoding);
- BreakpointLocationsPredictorCreator
- GetSingleStepBreakpointLocationsPredictorCreator() override {
- return [](std::unique_ptr<EmulateInstruction> emulator_up) {
- return std::make_unique<ARMSingleStepBreakpointLocationsPredictor>(
- std::move(emulator_up));
- };
- }
-
uint32_t m_arm_isa;
Mode m_opcode_mode;
uint32_t m_opcode_cpsr;
diff --git a/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.cpp b/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.cpp
index db32bf8a4dd51..37f08592d62b9 100644
--- a/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.cpp
+++ b/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.cpp
@@ -86,6 +86,7 @@ bool EmulateInstructionLoongArch::EvaluateInstruction(uint32_t options) {
uint32_t inst_size = m_opcode.GetByteSize();
uint32_t inst = m_opcode.GetOpcode32();
bool increase_pc = options & eEmulateInstructionOptionAutoAdvancePC;
+ bool success = false;
Opcode *opcode_data = GetOpcodeForInstruction(inst);
if (!opcode_data)
@@ -93,10 +94,9 @@ bool EmulateInstructionLoongArch::EvaluateInstruction(uint32_t options) {
lldb::addr_t old_pc = 0;
if (increase_pc) {
- auto addr = ReadPC();
- if (!addr)
+ old_pc = ReadPC(&success);
+ if (!success)
return false;
- old_pc = *addr;
}
// Call the Emulate... function.
@@ -104,10 +104,9 @@ bool EmulateInstructionLoongArch::EvaluateInstruction(uint32_t options) {
return false;
if (increase_pc) {
- auto addr = ReadPC();
- if (!addr)
+ lldb::addr_t new_pc = ReadPC(&success);
+ if (!success)
return false;
- lldb::addr_t new_pc = *addr;
if (new_pc == old_pc && !WritePC(old_pc + inst_size))
return false;
@@ -116,14 +115,13 @@ bool EmulateInstructionLoongArch::EvaluateInstruction(uint32_t options) {
}
bool EmulateInstructionLoongArch::ReadInstruction() {
- auto addr = ReadPC();
- if (!addr) {
+ bool success = false;
+ m_addr = ReadPC(&success);
+ if (!success) {
m_addr = LLDB_INVALID_ADDRESS;
return false;
}
- m_addr = *addr;
- bool success = false;
Context ctx;
ctx.type = eContextReadOpcode;
ctx.SetNoArgs();
@@ -133,6 +131,19 @@ bool EmulateInstructionLoongArch::ReadInstruction() {
return true;
}
+lldb::addr_t EmulateInstructionLoongArch::ReadPC(bool *success) {
+ return ReadRegisterUnsigned(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC,
+ LLDB_INVALID_ADDRESS, success);
+}
+
+bool EmulateInstructionLoongArch::WritePC(lldb::addr_t pc) {
+ EmulateInstruction::Context ctx;
+ ctx.type = eContextAdvancePC;
+ ctx.SetNoArgs();
+ return WriteRegisterUnsigned(ctx, eRegisterKindGeneric,
+ LLDB_REGNUM_GENERIC_PC, pc);
+}
+
std::optional<RegisterInfo>
EmulateInstructionLoongArch::GetRegisterInfo(lldb::RegisterKind reg_kind,
uint32_t reg_index) {
@@ -262,12 +273,9 @@ bool EmulateInstructionLoongArch::EmulateNonJMP(uint32_t inst) { return false; }
bool EmulateInstructionLoongArch::EmulateBEQZ64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint32_t offs21 = Bits32(inst, 25, 10) + (Bits32(inst, 4, 0) << 16);
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
@@ -285,12 +293,9 @@ bool EmulateInstructionLoongArch::EmulateBEQZ64(uint32_t inst) {
bool EmulateInstructionLoongArch::EmulateBNEZ64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint32_t offs21 = Bits32(inst, 25, 10) + (Bits32(inst, 4, 0) << 16);
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
@@ -308,12 +313,9 @@ bool EmulateInstructionLoongArch::EmulateBNEZ64(uint32_t inst) {
bool EmulateInstructionLoongArch::EmulateBCEQZ64(uint32_t inst) {
bool success = false;
uint32_t cj = Bits32(inst, 7, 5) + fpr_fcc0_loongarch;
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint32_t offs21 = Bits32(inst, 25, 10) + (Bits32(inst, 4, 0) << 16);
uint8_t cj_val =
(uint8_t)ReadRegisterUnsigned(eRegisterKindLLDB, cj, 0, &success);
@@ -333,12 +335,9 @@ bool EmulateInstructionLoongArch::EmulateBCEQZ64(uint32_t inst) {
bool EmulateInstructionLoongArch::EmulateBCNEZ64(uint32_t inst) {
bool success = false;
uint32_t cj = Bits32(inst, 7, 5) + fpr_fcc0_loongarch;
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint32_t offs21 = Bits32(inst, 25, 10) + (Bits32(inst, 4, 0) << 16);
uint8_t cj_val =
(uint8_t)ReadRegisterUnsigned(eRegisterKindLLDB, cj, 0, &success);
@@ -359,12 +358,9 @@ bool EmulateInstructionLoongArch::EmulateJIRL64(uint32_t inst) {
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
bool success = false;
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
EmulateInstruction::Context ctx;
if (!WriteRegisterUnsigned(ctx, eRegisterKindLLDB, rd, pc + 4))
return false;
@@ -378,11 +374,10 @@ bool EmulateInstructionLoongArch::EmulateJIRL64(uint32_t inst) {
// b offs26
// PC = PC + SignExtend({offs26, 2' b0}, GRLEN)
bool EmulateInstructionLoongArch::EmulateB64(uint32_t inst) {
- auto addr = ReadPC();
- if (!addr)
+ bool success = false;
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint32_t offs26 = Bits32(inst, 25, 10) + (Bits32(inst, 9, 0) << 16);
uint64_t next_pc = pc + llvm::SignExtend64<28>(offs26 << 2);
return WritePC(next_pc);
@@ -392,11 +387,10 @@ bool EmulateInstructionLoongArch::EmulateB64(uint32_t inst) {
// GR[1] = PC + 4
// PC = PC + SignExtend({offs26, 2'b0}, GRLEN)
bool EmulateInstructionLoongArch::EmulateBL64(uint32_t inst) {
- auto addr = ReadPC();
- if (!addr)
+ bool success = false;
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
EmulateInstruction::Context ctx;
if (!WriteRegisterUnsigned(ctx, eRegisterKindLLDB, gpr_r1_loongarch, pc + 4))
return false;
@@ -412,12 +406,9 @@ bool EmulateInstructionLoongArch::EmulateBEQ64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
return false;
@@ -438,12 +429,9 @@ bool EmulateInstructionLoongArch::EmulateBNE64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
return false;
@@ -464,12 +452,9 @@ bool EmulateInstructionLoongArch::EmulateBLT64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
int64_t rj_val =
(int64_t)ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
@@ -492,12 +477,9 @@ bool EmulateInstructionLoongArch::EmulateBGE64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
int64_t rj_val =
(int64_t)ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
@@ -520,12 +502,9 @@ bool EmulateInstructionLoongArch::EmulateBLTU64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
return false;
@@ -546,12 +525,9 @@ bool EmulateInstructionLoongArch::EmulateBGEU64(uint32_t inst) {
bool success = false;
uint32_t rj = Bits32(inst, 9, 5);
uint32_t rd = Bits32(inst, 4, 0);
-
- auto addr = ReadPC();
- if (!addr)
+ uint64_t pc = ReadPC(&success);
+ if (!success)
return false;
- uint64_t pc = *addr;
-
uint64_t rj_val = ReadRegisterUnsigned(eRegisterKindLLDB, rj, 0, &success);
if (!success)
return false;
diff --git a/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.h b/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.h
index 2a8acba42f49e..47fe454fcd88c 100644
--- a/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.h
+++ b/lldb/source/Plugins/Instruction/LoongArch/EmulateInstructionLoongArch.h
@@ -57,6 +57,8 @@ class EmulateInstructionLoongArch : public EmulateInstruction {
std::optional<RegisterInfo> GetRegisterInfo(lldb::RegisterKind reg_kind,
uint32_t reg_num) override;
+ lldb::addr_t ReadPC(bool *success);
+ bool WritePC(lldb::addr_t pc);
bool IsLoongArch64() { return m_arch_subtype == llvm::Triple::loongarch64; }
bool TestExecute(uint32_t inst);
diff --git a/lldb/source/Plugins/Instruction/RISCV/EmulateInstructionRISCV.cpp b/lldb/source/Plugins/Instruction/RISCV/EmulateInstructionRISCV.cpp
index c22d5bbdb6924..badc7ba36f011 100644
--- a/lldb/source/Plugins/Instruction/RISCV/EmulateInstructionRISCV.cpp
+++ b/lldb/source/Plugins/Instruction/RISCV/EmulateInstructionRISCV.cpp
@@ -650,10 +650,9 @@ std::optional<DecodeResult> EmulateInstructionRISCV::Decode(uint32_t inst) {
for (const InstrPattern &pat : PATTERNS) {
if ((inst & pat.type_mask) == pat.eigen &&
(inst_type & pat.inst_type) != 0) {
- LLDB_LOGF(log,
- "EmulateInstructionRISCV::%s: inst(%x at %" PRIx64
- ") was decoded to %s",
- __FUNCTION__, inst, m_addr, pat.name);
+ LLDB_LOGF(
+ log, "EmulateInstructionRISCV::%s: inst(%x at %" PRIx64 ") was decoded to %s",
+ __FUNCTION__, inst, m_addr, pat.name);
auto decoded = is_16b ? pat.decode(try_rvc) : pat.decode(inst);
return DecodeResult{decoded, inst, is_16b, pat};
}
@@ -1650,6 +1649,21 @@ bool EmulateInstructionRISCV::ReadInstruction() {
return true;
}
+std::optional<addr_t> EmulateInstructionRISCV::ReadPC() {
+ bool success = false;
+ auto addr = ReadRegisterUnsigned(eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC,
+ LLDB_INVALID_ADDRESS, &success);
+ return success ? std::optional<addr_t>(addr) : std::nullopt;
+}
...
[truncated]
|
anthonyhatran
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to anthonyhatran/llvm-project
that referenced
this pull request
Jun 26, 2025
…er" (llvm#145597) Reverts llvm#127505 because `riscv/step/TestSoftwareStep.py` is failing on the bots.
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Reverts #127505 because
riscv/step/TestSoftwareStep.pyis failing on the bots.