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Remove some UB in RegisterContextDarwin_arm64.cpp 

llvm-svn: 348710
This commit is contained in:
Frederic Riss 2018-12-09 02:35:19 +00:00
parent eae2b49fe3
commit f5debe2259
2 changed files with 16 additions and 6 deletions
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2
lldb/source/Plugins/Instruction/ARM64/EmulateInstructionARM64.cpp
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@ -90,7 +90,7 @@ static inline uint64_t
AddWithCarry(uint32_t N, uint64_t x, uint64_t y, bit carry_in,
EmulateInstructionARM64::ProcState &proc_state) {
uint64_t unsigned_sum = UInt(x) + UInt(y) + UInt(carry_in);
int64_t signed_sum = SInt(x) + SInt(y) + UInt(carry_in);
int64_t signed_sum = 0;//SInt(x) + SInt(y) + UInt(carry_in);
uint64_t result = unsigned_sum;
if (N < 64)
result = Bits64(result, N - 1, 0);

20
lldb/source/Plugins/Process/Utility/RegisterContextDarwin_arm64.cpp
View File

@ -338,13 +338,23 @@ bool RegisterContextDarwin_arm64::ReadRegister(const RegisterInfo *reg_info,
case gpr_x26:
case gpr_x27:
case gpr_x28:
case gpr_fp:
case gpr_sp:
case gpr_lr:
case gpr_pc:
case gpr_cpsr:
value.SetUInt64(gpr.x[reg - gpr_x0]);
break;
case gpr_fp:
value.SetUInt64(gpr.fp);
break;
case gpr_sp:
value.SetUInt64(gpr.sp);
break;
case gpr_lr:
value.SetUInt64(gpr.lr);
break;
case gpr_pc:
value.SetUInt64(gpr.pc);
break;
case gpr_cpsr:
value.SetUInt64(gpr.cpsr);
break;
case gpr_w0:
case gpr_w1: