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 Release Notes for HP-UX 11.0 Extension Pack, December 1998: HP 9000 Computers > Chapter 3 Functionality Changes Included in the Integrated Patch Bundle

Changes to the Linker/dld Interface
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Patches to the linker/dld interface include the following enhancements:

  • Added support for the CXperf performance measuring tool in both 32-bit and 64-bit versions of the ld command. Both versions recognize the +tools option, which enables CXperf information to be propagated to an executable program.

  • Added support for weak order segments in ELF objects.

  • Added support for huge data (.bss > 4GB)

  • A defect (CLLbs12742/4701375121) was repaired. +Oprocelim removed more than it should have, causing runtime error.

  • Performance shows a definite improvement:

    • 32-bit ld: approximately 30% link time improvement

    • 64-bit ld: approximately 8% link time improvement

Neither functionality nor compatibility are affected by the code changes. However, for 64-bit programs, mixing object files having non-weakorder sections with object files having weakorder sections might cause the ordering of text sections to change.

The new version of the linker requires 34112 blocks.



CXperf Performance Monitoring Support
  		 


Binary Compatibility Issue with Instrumented Code Using PBO or +O4 Optimization  
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