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<rdar://problem/10963899> 

Allow debugserver to be built on a newer kernel and still allow debugging on
older kernels.

llvm-svn: 151827
This commit is contained in:
Greg Clayton 2012-03-01 19:35:09 +00:00
parent 896cd1d3e6
commit 3442d46eac
1 changed files with 29 additions and 3 deletions
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32
lldb/tools/debugserver/source/MacOSX/MachException.cpp
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@ -465,16 +465,42 @@ MachException::Data::Dump() const
}
}
#define PREV_EXC_MASK_ALL (EXC_MASK_BAD_ACCESS | \
EXC_MASK_BAD_INSTRUCTION | \
EXC_MASK_ARITHMETIC | \
EXC_MASK_EMULATION | \
EXC_MASK_SOFTWARE | \
EXC_MASK_BREAKPOINT | \
EXC_MASK_SYSCALL | \
EXC_MASK_MACH_SYSCALL | \
EXC_MASK_RPC_ALERT | \
EXC_MASK_MACHINE)
kern_return_t
MachException::PortInfo::Save (task_t task)
{
count = (sizeof (ports) / sizeof (ports[0]));
DNBLogThreadedIf(LOG_EXCEPTIONS | LOG_VERBOSE, "MachException::PortInfo::Save ( task = 0x%4.4x )", task);
// Be careful to be able to have debugserver built on a newer OS than what
// it is currently running on by being able to start with all exceptions
// and back off to just what is supported on the current system
DNBError err;
err = ::task_get_exception_ports (task, EXC_MASK_ALL, masks, &count, ports, behaviors, flavors);
exception_mask_t exception_mask = EXC_MASK_ALL;
count = (sizeof (ports) / sizeof (ports[0]));
err = ::task_get_exception_ports (task, exception_mask, masks, &count, ports, behaviors, flavors);
if (DNBLogCheckLogBit(LOG_EXCEPTIONS) || err.Fail())
err.LogThreaded("::task_get_exception_ports ( task = 0x%4.4x, mask = 0x%x, maskCnt => %u, ports, behaviors, flavors )", task, EXC_MASK_ALL, count);
err.LogThreaded("::task_get_exception_ports ( task = 0x%4.4x, mask = 0x%x, maskCnt => %u, ports, behaviors, flavors )", task, exception_mask, count);
if (err.Error() == KERN_INVALID_ARGUMENT && exception_mask != PREV_EXC_MASK_ALL)
{
exception_mask = PREV_EXC_MASK_ALL;
count = (sizeof (ports) / sizeof (ports[0]));
err = ::task_get_exception_ports (task, exception_mask, masks, &count, ports, behaviors, flavors);
if (DNBLogCheckLogBit(LOG_EXCEPTIONS) || err.Fail())
err.LogThreaded("::task_get_exception_ports ( task = 0x%4.4x, mask = 0x%x, maskCnt => %u, ports, behaviors, flavors )", task, exception_mask, count);
}
if (err.Fail())
count = 0;
return err.Error();