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[lldb] Use UnwindPlan::Row as values, part 2 #132008

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Mar 20, 2025
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[lldb] Use UnwindPlan::Row as values, part 2 #132008

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8 changes: 2 additions & 6 deletions lldb/include/lldb/Symbol/UnwindPlan.h
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Expand Up @@ -462,13 +462,9 @@ class UnwindPlan {

void Dump(Stream &s, Thread *thread, lldb::addr_t base_addr) const;

void AppendRow(const RowSP &row_sp);
void AppendRow(Row row) { AppendRow(std::make_shared<Row>(std::move(row))); }
void AppendRow(Row row);

void InsertRow(const RowSP &row_sp, bool replace_existing = false);
void InsertRow(Row row, bool replace_existing = false) {
InsertRow(std::make_shared<Row>(std::move(row)), replace_existing);
}
void InsertRow(Row row, bool replace_existing = false);

// Returns a pointer to the best row for the given offset into the function's
// instructions. If offset is -1 it indicates that the function start is
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21 changes: 10 additions & 11 deletions lldb/source/Plugins/ABI/AArch64/ABIMacOSX_arm64.cpp
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Expand Up @@ -349,16 +349,16 @@ UnwindPlanSP ABIMacOSX_arm64::CreateFunctionEntryUnwindPlan() {
uint32_t sp_reg_num = arm64_dwarf::sp;
uint32_t pc_reg_num = arm64_dwarf::pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our previous Call Frame Address is the stack pointer
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);

// Our previous PC is in the LR, all other registers are the same.
row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
row.SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm64 at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
Expand All @@ -368,18 +368,17 @@ UnwindPlanSP ABIMacOSX_arm64::CreateDefaultUnwindPlan() {
uint32_t fp_reg_num = arm64_dwarf::fp;
uint32_t pc_reg_num = arm64_dwarf::pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;
const int32_t ptr_size = 8;

row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row->SetOffset(0);
row->SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row.SetUnspecifiedRegistersAreUndefined(true);

row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm64-apple-darwin default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
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19 changes: 9 additions & 10 deletions lldb/source/Plugins/ABI/AArch64/ABISysV_arm64.cpp
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Expand Up @@ -389,14 +389,14 @@ UnwindPlanSP ABISysV_arm64::CreateFunctionEntryUnwindPlan() {
uint32_t lr_reg_num = arm64_dwarf::lr;
uint32_t sp_reg_num = arm64_dwarf::sp;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our previous Call Frame Address is the stack pointer, all other registers
// are the same.
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetReturnAddressRegister(lr_reg_num);
plan_sp->SetSourceName("arm64 at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
Expand All @@ -409,18 +409,17 @@ UnwindPlanSP ABISysV_arm64::CreateDefaultUnwindPlan() {
uint32_t fp_reg_num = arm64_dwarf::fp;
uint32_t pc_reg_num = arm64_dwarf::pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;
const int32_t ptr_size = 8;

row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row->SetOffset(0);
row->SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row.SetUnspecifiedRegistersAreUndefined(true);

row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm64 default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
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8 changes: 4 additions & 4 deletions lldb/source/Plugins/ABI/ARC/ABISysV_arc.cpp
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Expand Up @@ -560,16 +560,16 @@ ValueObjectSP ABISysV_arc::GetReturnValueObjectImpl(Thread &thread,
}

UnwindPlanSP ABISysV_arc::CreateFunctionEntryUnwindPlan() {
UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our Call Frame Address is the stack pointer value.
row->GetCFAValue().SetIsRegisterPlusOffset(dwarf::sp, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf::sp, 0);

// The previous PC is in the BLINK, all other registers are the same.
row->SetRegisterLocationToRegister(dwarf::pc, dwarf::blink, true);
row.SetRegisterLocationToRegister(dwarf::pc, dwarf::blink, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arc at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
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21 changes: 10 additions & 11 deletions lldb/source/Plugins/ABI/ARM/ABIMacOSX_arm.cpp
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Expand Up @@ -1788,16 +1788,16 @@ UnwindPlanSP ABIMacOSX_arm::CreateFunctionEntryUnwindPlan() {
uint32_t sp_reg_num = dwarf_sp;
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our Call Frame Address is the stack pointer value
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);

// The previous PC is in the LR, all other registers are the same.
row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
row.SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
Expand All @@ -1808,18 +1808,17 @@ UnwindPlanSP ABIMacOSX_arm::CreateDefaultUnwindPlan() {
dwarf_r7; // apple uses r7 for all frames. Normal arm uses r11
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;
const int32_t ptr_size = 4;

row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row->SetOffset(0);
row->SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row.SetUnspecifiedRegistersAreUndefined(true);

row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm-apple-ios default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
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21 changes: 10 additions & 11 deletions lldb/source/Plugins/ABI/ARM/ABISysV_arm.cpp
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Expand Up @@ -1905,15 +1905,15 @@ UnwindPlanSP ABISysV_arm::CreateFunctionEntryUnwindPlan() {
uint32_t sp_reg_num = dwarf_sp;
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our Call Frame Address is the stack pointer value
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);

// The previous PC is in the LR, all other registers are the same.
row->SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
row.SetRegisterLocationToRegister(pc_reg_num, lr_reg_num, true);
auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
Expand All @@ -1924,18 +1924,17 @@ UnwindPlanSP ABISysV_arm::CreateDefaultUnwindPlan() {
uint32_t fp_reg_num = dwarf_r11;
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;
const int32_t ptr_size = 4;

row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row->SetOffset(0);
row->SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 2 * ptr_size);
row.SetUnspecifiedRegistersAreUndefined(true);

row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, ptr_size * -2, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, ptr_size * -1, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("arm default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
Expand Down
25 changes: 12 additions & 13 deletions lldb/source/Plugins/ABI/Hexagon/ABISysV_hexagon.cpp
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Expand Up @@ -1196,18 +1196,17 @@ ValueObjectSP ABISysV_hexagon::GetReturnValueObjectImpl(
// called when we are on the first instruction of a new function for hexagon
// the return address is in RA (R31)
UnwindPlanSP ABISysV_hexagon::CreateFunctionEntryUnwindPlan() {
UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our Call Frame Address is the stack pointer value
row->GetCFAValue().SetIsRegisterPlusOffset(LLDB_REGNUM_GENERIC_SP, 4);
row->SetOffset(0);
row.GetCFAValue().SetIsRegisterPlusOffset(LLDB_REGNUM_GENERIC_SP, 4);

// The previous PC is in the LR
row->SetRegisterLocationToRegister(LLDB_REGNUM_GENERIC_PC,
LLDB_REGNUM_GENERIC_RA, true);
row.SetRegisterLocationToRegister(LLDB_REGNUM_GENERIC_PC,
LLDB_REGNUM_GENERIC_RA, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindGeneric);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetReturnAddressRegister(LLDB_REGNUM_GENERIC_RA);
plan_sp->SetSourceName("hexagon at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
Expand All @@ -1219,17 +1218,17 @@ UnwindPlanSP ABISysV_hexagon::CreateDefaultUnwindPlan() {
uint32_t sp_reg_num = LLDB_REGNUM_GENERIC_SP;
uint32_t pc_reg_num = LLDB_REGNUM_GENERIC_PC;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

row->SetUnspecifiedRegistersAreUndefined(true);
row->GetCFAValue().SetIsRegisterPlusOffset(LLDB_REGNUM_GENERIC_FP, 8);
row.SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(LLDB_REGNUM_GENERIC_FP, 8);

row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, -8, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -4, true);
row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, -8, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -4, true);
row.SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindGeneric);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("hexagon default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
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19 changes: 9 additions & 10 deletions lldb/source/Plugins/ABI/LoongArch/ABISysV_loongarch.cpp
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Expand Up @@ -539,16 +539,16 @@ UnwindPlanSP ABISysV_loongarch::CreateFunctionEntryUnwindPlan() {
uint32_t sp_reg_num = loongarch_dwarf::dwarf_gpr_sp;
uint32_t ra_reg_num = loongarch_dwarf::dwarf_gpr_ra;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Define CFA as the stack pointer
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 0);

// Previous frame's pc is in ra
row->SetRegisterLocationToRegister(pc_reg_num, ra_reg_num, true);
row.SetRegisterLocationToRegister(pc_reg_num, ra_reg_num, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("loongarch function-entry unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
Expand All @@ -558,23 +558,22 @@ UnwindPlanSP ABISysV_loongarch::CreateDefaultUnwindPlan() {
uint32_t pc_reg_num = LLDB_REGNUM_GENERIC_PC;
uint32_t fp_reg_num = LLDB_REGNUM_GENERIC_FP;

UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Define the CFA as the current frame pointer value.
row->GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 0);
row->SetOffset(0);
row.GetCFAValue().SetIsRegisterPlusOffset(fp_reg_num, 0);

int reg_size = 4;
if (m_is_la64)
reg_size = 8;

// Assume the ra reg (return pc) and caller's frame pointer
// have been spilled to stack already.
row->SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, reg_size * -2, true);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, reg_size * -1, true);
row.SetRegisterLocationToAtCFAPlusOffset(fp_reg_num, reg_size * -2, true);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, reg_size * -1, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindGeneric);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("loongarch default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
Expand Down
22 changes: 11 additions & 11 deletions lldb/source/Plugins/ABI/MSP430/ABISysV_msp430.cpp
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Expand Up @@ -309,13 +309,13 @@ UnwindPlanSP ABISysV_msp430::CreateFunctionEntryUnwindPlan() {
uint32_t sp_reg_num = dwarf_sp;
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 2);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -2, true);
row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
UnwindPlan::Row row;
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 2);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -2, true);
row.SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("msp430 at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
return plan_sp;
Expand All @@ -326,14 +326,14 @@ UnwindPlanSP ABISysV_msp430::CreateDefaultUnwindPlan() {
uint32_t sp_reg_num = dwarf_sp;
uint32_t pc_reg_num = dwarf_pc;

UnwindPlan::RowSP row(new UnwindPlan::Row);
row->GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 2);
row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -2, true);
row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
row->SetRegisterLocationToUnspecified(fp_reg_num, true);
UnwindPlan::Row row;
row.GetCFAValue().SetIsRegisterPlusOffset(sp_reg_num, 2);
row.SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -2, true);
row.SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true);
row.SetRegisterLocationToUnspecified(fp_reg_num, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("msp430 default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
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18 changes: 9 additions & 9 deletions lldb/source/Plugins/ABI/Mips/ABISysV_mips.cpp
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Expand Up @@ -956,32 +956,32 @@ ValueObjectSP ABISysV_mips::GetReturnValueObjectImpl(
}

UnwindPlanSP ABISysV_mips::CreateFunctionEntryUnwindPlan() {
UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

// Our Call Frame Address is the stack pointer value
row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_r29, 0);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_r29, 0);

// The previous PC is in the RA, all other registers are the same.
row->SetRegisterLocationToRegister(dwarf_pc, dwarf_r31, true);
row.SetRegisterLocationToRegister(dwarf_pc, dwarf_r31, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("mips at-func-entry default");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetReturnAddressRegister(dwarf_r31);
return plan_sp;
}

UnwindPlanSP ABISysV_mips::CreateDefaultUnwindPlan() {
UnwindPlan::RowSP row(new UnwindPlan::Row);
UnwindPlan::Row row;

row->SetUnspecifiedRegistersAreUndefined(true);
row->GetCFAValue().SetIsRegisterPlusOffset(dwarf_r29, 0);
row.SetUnspecifiedRegistersAreUndefined(true);
row.GetCFAValue().SetIsRegisterPlusOffset(dwarf_r29, 0);

row->SetRegisterLocationToRegister(dwarf_pc, dwarf_r31, true);
row.SetRegisterLocationToRegister(dwarf_pc, dwarf_r31, true);

auto plan_sp = std::make_shared<UnwindPlan>(eRegisterKindDWARF);
plan_sp->AppendRow(row);
plan_sp->AppendRow(std::move(row));
plan_sp->SetSourceName("mips default unwind plan");
plan_sp->SetSourcedFromCompiler(eLazyBoolNo);
plan_sp->SetUnwindPlanValidAtAllInstructions(eLazyBoolNo);
Expand Down
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