• Junliang Yan's avatar
    PPC/s390: [debug] implement break on entry for builtin functions. · 3088777f
    Junliang Yan authored
    Port 876f37c3
    
    Original Commit Message:
    
        We reuse most of the infrastructure to set break points, with minor
        differences when we encounter functions where we can only break on entry:
        - PrepareFunctionForBreakPoints simply deopts all functions.
        - Break point objects have the canonical source position 0.
        - Break point is set/checked/cleared via bit on the DebugInfo.
        - Debug::Break do not continue stepping since stepping is implemented via
          regular break points and therefore do not interfere with break on entry.
    
        I promise to add more tests.
    
    R=yangguo@chromium.org, joransiu@ca.ibm.com, michael_dawson@ca.ibm.com
    BUG=
    LOG=N
    
    Change-Id: I0595652adced533c1032a6c3fd64cddfd4e730da
    Reviewed-on: https://chromium-review.googlesource.com/909292
    Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
    Reviewed-by: 's avatarYang Guo <yangguo@chromium.org>
    Reviewed-by: 's avatarJoran Siu <joransiu@ca.ibm.com>
    Cr-Commit-Position: refs/heads/master@{#51186}
    3088777f
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