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Don't use a non-zero argument for __builtin_frame_address

Description

Don't use a non-zero argument for __builtin_frame_address

Mirror the change made for powerpc64 in r323687. With this
change, gcc 6.4.0 can successfully compile and link a kernel
that runs on sparc64.

MFC after: 2 weeks

Details

Committed
lidlOct 11 2017, 3:50 AM
Parents
rS324511: Do exception offset computations in 64 bits, not 32.
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