HP OpenVMS Systems Documentation

HP OpenVMS MACRO Compiler Porting and User's Guide Previous Contents Index Chapter 4 4 Improving the Performance of Ported Code      4.1     Aligning Data          4.1.1         Alignment Assumptions          4.1.2         Directives and Qualifier for Changing Alignment Assumptions          4.1.3         Precedence of Alignment Controls          4.1.4         Recommendations for Aligning Data      4.2     Code Flow and Branch Prediction          4.2.1         Default Code Flow and Branch Prediction          4.2.2         Changing the Compiler's Branch Prediction          4.2.3         How to Use .BRANCH_LIKELY          4.2.4         How to Use .BRANCH_UNLIKELY          4.2.5         Forward Jumps into Loops      4.3     Code Optimization          4.3.1         Using the VAXREGS Optimization (OpenVMS Alpha only)      4.4     Common-Based Referencing          4.4.1         Creating a Prefix File for Common-Based Referencing              4.4.1.1             Code Sequence Differences on OpenVMS I64 Systems Chapter 5 5 MACRO Support for 64-Bit Addressing      5.1     Components for 64-Bit Addressing      5.2     Passing 64-Bit Values          5.2.1         Calls with a Fixed-Size Argument List          5.2.2         Calls with a Variable-Size Argument List      5.3     Declaring 64-Bit Arguments      5.4     Specifying 64-Bit Address Arithmetic          5.4.1         Dependence on Wrapping Behavior of Longword Operations      5.5     Sign-Extending and Checking      5.6     Alpha Instruction Built-ins      5.7     Calculating Page-Size Dependent Values      5.8     Creating and Using Buffers in 64-Bit Address Space      5.9     Coding for Moves Longer Than 64 KB Part 2 Part 2 Reference Appendix A Appendix A MACRO Compiler Qualifiers     Command 1     MACRO/MIGRATION Appendix B Appendix B Specialized Directives      B.1     VAX MACRO Assembler Directives      B.2     MACRO Compiler Specialized Directives     Command 2     .BRANCH_LIKELY     Command 3     .BRANCH_UNLIKELY     Command 4     .CALL_ENTRY     Command 5     .CALL_LINKAGE (OpenVMS I64 only)     Command 6     .DEFINE_LINKAGE (OpenVMS I64 only)     Command 7     .DEFINE_PAL (OpenVMS Alpha only)     Command 8     .DISABLE     Command 9     .ENABLE     Command 10     .EXCEPTION_ENTRY (OpenVMS Alpha only)     Command 11     .GLOBAL_LABEL     Command 12     .JSB_ENTRY     Command 13     .JSB32_ENTRY     Command 14     .LINKAGE_PSECT (OpenVMS Alpha only)     Command 15     .PRESERVE     Command 16     .SET_REGISTERS     Command 17     .SYMBOL_ALIGNMENT     Command 18     .USE_LINKAGE (OpenVMS I64 only) Appendix C Appendix C MACRO Compiler Built-Ins      C.1     Alpha Instruction Built-Ins for OpenVMS Alpha and OpenVMS I64 Systems      C.2     Alpha PALcode Built-Ins      C.3     Itanium Instruction Built-Ins for OpenVMS I64 Systems Appendix D Appendix D Macros for Porting from VAX to Alpha or I64      D.1     Calculating Page-Size Values     Command 19     $BYTES_TO_PAGES     Command 20     $NEXT_PAGE     Command 21     $PAGES_TO_BYTES     Command 22     $PREVIOUS_PAGE     Command 23     $ROUND_RETADR     Command 24     $START_OF_PAGE      D.2     Saving and Restoring 64-Bit Registers     Command 25     $POP64     Command 26     $PUSH64      D.3     Locking Pages into a Working Set          D.3.1         Image Initialization-Time Lockdown     Command 27     $LOCK_PAGE_INIT     Command 28     $LOCKED_PAGE_END     Command 29     $LOCKED_PAGE_START          D.3.2         On-the-Fly Lockdown     Command 30     $LOCK_PAGE     Command 31     $UNLOCK_PAGE Appendix E Appendix E Macros for 64-Bit Addressing      E.1     Macros for Manipulating 64-Bit Addresses     Command 32     $SETUP_CALL64     Command 33     $PUSH_ARG64     Command 34     $CALL64      E.2     Macros for Checking Sign Extension and Descriptor Format     Command 35     $IS_32BITS     Command 36     $IS_DESC64 Index Index Examples 2-1 Example of Line Numbering in an OpenVMS I64 Listing File Tables 2-1 Register Mapping Table for OpenVMS VAX / OpenVMS Alpha to OpenVMS I64 3-1 Image Initialization-Time Lockdown 3-2 On-the-Fly Lockdown 3-3 Image Initialization-Time Lockdown with the Same Code 5-1 Components for 64-Bit Addressing 5-2 Passing 64-Bit Values with a Fixed-Size Argument List A-1 Compiler Qualifiers B-1 Operand Descriptors C-1 Alpha Instruction Built-Ins for OpenVMS Alpha and OpenVMS I64 Systems C-2 Alpha PALcode Built-Ins C-3 Itanium Instruction Built-Ins for OpenVMS I64 Systems D-1 Shift Values Previous Next Contents Index