bool ABI::GetFallbackRegisterLocation(
const RegisterInfo *reg_info,
UnwindPlan::Row::RegisterLocation &unwind_regloc) {
// Did the UnwindPlan fail to give us the caller's stack pointer?
// The stack pointer is defined to be the same as THIS frame's CFA, so return
// the CFA value as
// the caller's stack pointer. This is true on x86-32/x86-64 at least.
if (reg_info->kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_SP) {
unwind_regloc.SetIsCFAPlusOffset(0);
return true;
}
// If a volatile register is being requested, we don't want to forward the
// next frame's register contents
// up the stack -- the register is not retrievable at this frame.
if (RegisterIsVolatile(reg_info)) {
unwind_regloc.SetUndefined();
return true;
}
return false;
}
bool ABISysV_s390x::GetFallbackRegisterLocation(
const RegisterInfo *reg_info,
UnwindPlan::Row::RegisterLocation &unwind_regloc) {
// If a volatile register is being requested, we don't want to forward the
// next frame's register contents up the stack -- the register is not
// retrievable at this frame.
if (RegisterIsVolatile(reg_info)) {
unwind_regloc.SetUndefined();
return true;
}
return false;
}
