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[ABI/SysV] Remove more dead code. NFCI. 

llvm-svn: 318577
This commit is contained in:
Davide Italiano 2017-11-18 00:35:27 +00:00
parent f5b0135c6b
commit 2078234697
1 changed files with 0 additions and 42 deletions
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42
lldb/source/Plugins/ABI/SysV-x86_64/ABISysV_x86_64.cpp
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@ -1161,48 +1161,6 @@ bool ABISysV_x86_64::PrepareTrivialCall(Thread &thread, addr_t sp,
ProcessSP process_sp(thread.GetProcess());
RegisterValue reg_value;
#if 0
// This code adds an extra frame so that we don't lose the function that we came from
// by pushing the PC and the FP and then writing the current FP to point to the FP value
// we just pushed. It is disabled for now until the stack backtracing code can be debugged.
// Save current PC
const RegisterInfo *fp_reg_info = reg_ctx->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_FP);
if (reg_ctx->ReadRegister(pc_reg_info, reg_value))
{
if (log)
log->Printf("Pushing the current PC onto the stack: 0x%" PRIx64 ": 0x%" PRIx64, (uint64_t)sp, reg_value.GetAsUInt64());
if (!process_sp->WritePointerToMemory(sp, reg_value.GetAsUInt64(), error))
return false;
sp -= 8;
// Save current FP
if (reg_ctx->ReadRegister(fp_reg_info, reg_value))
{
if (log)
log->Printf("Pushing the current FP onto the stack: 0x%" PRIx64 ": 0x%" PRIx64, (uint64_t)sp, reg_value.GetAsUInt64());
if (!process_sp->WritePointerToMemory(sp, reg_value.GetAsUInt64(), error))
return false;
}
// Setup FP backchain
reg_value.SetUInt64 (sp);
if (log)
log->Printf("Writing FP: 0x%" PRIx64 " (for FP backchain)", reg_value.GetAsUInt64());
if (!reg_ctx->WriteRegister(fp_reg_info, reg_value))
{
return false;
}
sp -= 8;
}
#endif
if (log)
log->Printf("Pushing the return address onto the stack: 0x%" PRIx64
": 0x%" PRIx64,