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  1. JDK
  2. JDK-8286314

Trampoline not created for far runtime targets outside small CodeCache

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    • b04
    • aarch64

    Backports

      Description

        MacroAssembler::trampoline_call only generates trampolines when the size of CodeCache is bigger than 128M (this is checked with far_branches):

        address MacroAssembler::trampoline_call(Address entry, CodeBuffer* cbuf) {
        ...
          if (far_branches()) {
        ...
              address stub = emit_trampoline_stub(offset(), entry.target());
              if (stub == NULL) {
                postcond(pc() == badAddress);
                return NULL; // CodeCache is full
              }
            }
          }

        MacroAssembler::trampoline_call supports relocInfo types: runtime_call_type, opt_virtual_call_type, static_call_type or virtual_call_type. Targets of opt_virtual_call_type, static_call_type or virtual_call_type are always inside CodeCache. Targets of runtime_call_type can be outside CodeCache and a distance to them can be bigger than 128M. If CodeCache size is less than 128M, a trampoline won't be created for such targets.
        If a target is outside CodeCache we should check whether the maximum possible distance to the target is below 128.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8289045 Trampoline not created for far runtime targets outside small CodeCache

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8291010 Trampoline not created for far runtime targets outside small CodeCache

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8291487 Trampoline not created for far runtime targets outside small CodeCache

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8291620 Trampoline not created for far runtime targets outside small CodeCache

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8294453 Trampoline not created for far runtime targets outside small CodeCache

            • P3 - Major loss of function.
            • Resolved
            links to

            Commit Commit openjdk/jdk11u-dev/8a88a695

            Commit Commit openjdk/jdk17u-dev/186745e8

            Commit Commit openjdk/jdk19u/30294b3a

            Commit Commit openjdk/jdk/bf0623b1

            Review Review openjdk/jdk11u-dev/1276

            Review Review openjdk/jdk17u-dev/600

            Review Review openjdk/jdk19u/28

            Review Review openjdk/jdk/9235

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                eastigeevich Evgeny Astigeevich
                eastigeevich Evgeny Astigeevich
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                  Updated:
                  Resolved: