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HP OpenVMS Systems Documentation
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OpenVMS Programming Concepts Manual

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Part 3
Part 3 Addressing and Memory Management
Chapter 10
10 Overview of Alpha Virtual Address Space
     10.1     Using 64-Bit Addresses
     10.2     Traditional OpenVMS 32-Bit Virtual Address Space Layout
     10.3     OpenVMS Alpha 64-Bit Virtual Address Space Layout
         10.3.1         Process-Private Space
         10.3.2         System Space
         10.3.3         Page Table Space
         10.3.4         Virtual Address Space Size
     10.4     Virtual Regions
         10.4.1         Regions Within P0 Space and P1 Space
         10.4.2         64-Bit Program Region
         10.4.3         User-Defined Virtual Regions
Chapter 11
11 Support for 64-Bit Addressing (Alpha Only)
     11.1     System Services Support for 64-Bit Addressing
         11.1.1         System Services Terminology
         11.1.2         Comparison of 32-Bit and 64-Bit Descriptors
         11.1.3         Comparison of 32-Bit and 64-Bit Item Lists
             11.1.3.1             32-Bit Item Lists
             11.1.3.2             64-Bit Item Lists
         11.1.4         System Services That Support 64-Bit Addresses
         11.1.5         Sign-Extension Checking
         11.1.6         Language Support for 64-Bit System Services
         11.1.7         NEW STARLET Definitions for C
     11.2     RMS Interface Enhancements for 64-Bit Addressing
         11.2.1         RAB64 Data Structure
         11.2.2         Using the 64-Bit RAB Extension
         11.2.3         Macros to Support User RAB Structure
     11.3     File System Support for 64-Bit Addressing
     11.4     OpenVMS Alpha 64-Bit API Guidelines
         11.4.1         Quadword/Longword Argument Pointer Guidelines
         11.4.2         Alpha/VAX Guidelines
         11.4.3         Promoting an API from a 32-Bit API to a 64-Bit API
         11.4.4         Example of a 32-Bit Routine and a 64-Bit Routine
     11.5     OpenVMS Alpha Tools and Utilities That Support 64-Bit Addressing
         11.5.1         OpenVMS Debugger
         11.5.2         OpenVMS Alpha System-Code Debugger
         11.5.3         Delta/XDelta
         11.5.4         LIB$ and CVT$ Facilities of the OpenVMS Run-Time Library
         11.5.5         Watchpoint Utility
         11.5.6         SDA
     11.6     Language and Pointer Support for 64-Bit Addressing
     11.7     Compaq C RTL Support for 64-Bit Addressing
         11.7.1         Using the Compaq C Run-Time Library
         11.7.2         Obtaining 64-Bit Pointers to Memory
         11.7.3         Compaq C Header Files
         11.7.4         Functions Affected
             11.7.4.1             No Pointer-Size Impact
             11.7.4.2             Functions Accepting Both Pointer Sizes
             11.7.4.3             Functions with Two Implementations
             11.7.4.4             Functions Restricted to 32-Bit Pointers
         11.7.5         Reading Header Files
Chapter 12
12 Memory Management Services and Routines on OpenVMS Alpha
     12.1     Virtual Page Sizes (Alpha Only)
     12.2     Levels of Memory Allocation Routines
     12.3     Using System Services for Memory Allocation
         12.3.1         Increasing and Decreasing Virtual Address Space
         12.3.2         Input Address Arrays and Return Address Arrays
         12.3.3         Allocating Memory in Existing Virtual Address Space on Alpha Systems (Alpha Only)
         12.3.4         Page Ownership and Protection
         12.3.5         Working Set Paging (Alpha Only)
         12.3.6         Process Swapping
         12.3.7         Sections
             12.3.7.1             Creating Sections
             12.3.7.2             Opening the Disk File
             12.3.7.3             Defining the Section Extents
             12.3.7.4             Defining the Section Characteristics
             12.3.7.5             Defining Global Section Characteristics
             12.3.7.6             Global Section Name
             12.3.7.7             Mapping Sections
             12.3.7.8             Mapping Global Sections
             12.3.7.9             Global Page-File Sections
             12.3.7.10             Mapping into a Defined Address Range (Alpha Only)
             12.3.7.11             Mapping from an Offset into a Section File (Alpha Only)
             12.3.7.12             Section Paging
             12.3.7.13             Reading and Writing Data Sections
             12.3.7.14             Releasing and Deleting Sections
             12.3.7.15             Writing Back Sections
             12.3.7.16             Memory-Resident Global Sections
             12.3.7.17             Image Sections
             12.3.7.18             Page Frame Sections
             12.3.7.19             Partial Sections (Alpha Only)
         12.3.8         Example of Using Memory Management System Services (Alpha Only)
     12.4     Large Page-File Sections (Alpha Only)

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