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This patch replaces "RAISE 0;" with "EXCPT 0;" for syscall in Blackfin libgloss. The syscall mechanism in libgloss is used for simulator and hardware board. "RAISE 0" is OK for simulator, but cannot be used for hardware board. Using a valid instruction will ensure predictable behavior of application on hardware board although currently there is no non-trivial implementation of syscall for hardware board. Please review and commit. Thanks.
Jie
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