| Chapter 5 |
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5
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Signature Information and Translated Images (Alpha and I64 Systems Only)
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5.1
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Overview
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5.1.1
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Translated VAX Images on Alpha Systems
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5.1.1.1
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Direct Calls From Translated to Native Code
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5.1.1.2
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Direct Calls From Native to Translated Code
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5.1.1.3
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Indirect Calls From Native to Translated Code
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5.1.2
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Translated Images on I64 Systems
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5.1.2.1
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Calls From Translated to Native I64 Code
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5.1.2.2
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Direct Calls From Native I64 Code to Translated Code
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5.1.2.3
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Indirect Calls From Native to Translated Code
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5.1.3
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Signature Information Fields in Function Descriptors
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5.2
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Signature Information Blocks
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5.2.1
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Signature Information on Alpha Systems
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5.2.2
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Signature Information on I64 Systems
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5.2.3
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Signature Information Block Content
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5.2.4
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Call Parameter PSIG Conversions
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5.2.4.1
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Native-Alpha-to-Translated-VAX PSIG Conversions
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5.2.4.2
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Translated-VAX-to-Native-Alpha PSIG Conversions
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5.2.4.3
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Native-I64-to-Translated-Alpha PSIG Conversions
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5.2.4.4
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Translated-Alpha-to-Native-I64 PSIG Conversions
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5.2.5
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Default Signature Information
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| Chapter 6 |
|
6
|
OpenVMS Argument Data Types
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|
6.1
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Atomic Data Types
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6.2
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String Data Types
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6.3
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Miscellaneous Data Types
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6.4
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Reserved Data-Type Codes
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6.4.1
|
Facility-Specific Data-Type Codes
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6.5
|
Varying Character String Data Type (DSC$K_DTYPE_VT)
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| Chapter 7 |
|
7
|
OpenVMS Argument Descriptors
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|
7.1
|
Descriptor Prototype
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7.2
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Fixed-Length Descriptor (CLASS_S)
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7.3
|
Dynamic String Descriptor (CLASS_D)
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7.4
|
Array Descriptor (CLASS_A)
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7.5
|
Procedure Argument Descriptor (CLASS_P)
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7.6
|
Decimal String Descriptor (CLASS_SD)
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7.7
|
Noncontiguous Array Descriptor (CLASS_NCA)
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7.8
|
Varying String Descriptor (CLASS_VS)
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7.9
|
Varying String Array Descriptor (CLASS_VSA)
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7.10
|
Unaligned Bit String Descriptor (CLASS_UBS)
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7.11
|
Unaligned Bit Array Descriptor (CLASS_UBA)
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7.12
|
String with Bounds Descriptor (CLASS_SB)
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7.13
|
Unaligned Bit String with Bounds Descriptor (CLASS_UBSB)
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7.14
|
Reserved Descriptor Class Codes
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7.14.1
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Facility-Specific Descriptor Class Codes
|
| Chapter 8 |
|
8
|
OpenVMS Conditions
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8.1
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Condition Values
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8.1.1
|
Interpretation of Severity Codes
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8.1.2
|
Use of Condition Values
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8.2
|
Condition Handlers
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8.3
|
Condition Handler Options
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8.4
|
Operations Involving Condition Handlers
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8.4.1
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Establishing a Condition Handler
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8.4.2
|
Reverting to the Caller's Handling
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8.4.3
|
Signaling a Condition
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8.4.4
|
Signaling a Condition Using GENTRAP (Alpha and I64 Systems Only)
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8.4.5
|
Signaling a Condition Using BREAK (I64 Only)
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8.4.6
|
Condition Handler Search
|
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8.5
|
Properties of Condition Handlers
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8.5.1
|
Condition Handler Parameters and Invocation
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8.5.1.1
|
Signal Argument Vector
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8.5.1.2
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Mechanism Argument Vector
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8.5.1.2.1
|
VAX Mechanism Vector Format
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8.5.1.2.2
|
Alpha Mechanism Vector Format
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8.5.1.2.3
|
I64 Mechanism Vector Format
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8.5.1.3
|
Mechanism Depth
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8.5.2
|
System Default Condition Handlers
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8.5.3
|
Coordinating the Handler and Establisher
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8.5.3.1
|
Use of Memory
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8.5.3.2
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Exception Synchronization (Alpha Only)
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8.5.3.3
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Continuation from Exceptions (Alpha Only)
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8.5.3.4
|
Floating-Point Control Status (I64 Only)
|
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8.6
|
Returning from a Condition Handler
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8.7
|
Request to Unwind from a Signal
|
|
8.7.1
|
Signaler's Registers
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|
8.7.2
|
Unwind Completion
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8.8
|
GOTO Unwind Operations (Alpha and I64 Systems Only)
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8.8.1
|
Handler Invocation During a GOTO Unwind
|
|
8.8.2
|
Unwind Completion
|
|
8.9
|
Multiple Active Signals
|
|
8.10
|
Multiple Active Unwind Operations
|
| Appendix A |
|
Appendix A
|
Stack Unwinding and Exception Handling on OpenVMS I64
|
|
A.1
|
Unwinding the Stack
|
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A.1.1
|
Initial Context
|
|
A.1.2
|
Step to Previous Frame
|
|
A.2
|
Exception Handling Framework
|
|
A.3
|
Coding Conventions for Reliable Unwinding
|
|
A.3.1
|
Requirements for Unwinding the Stack
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|
A.3.2
|
Conventions for Prologue Regions
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|
A.3.3
|
Conventions for Body Regions
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A.3.4
|
Conventions for Epilogues
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|
A.3.5
|
Conventions for the Spill Area in the Memory Stack Frame
|
|
A.4
|
Data Structures
|
|
A.4.1
|
Unwind Table and Unwind Information Block
|
|
A.4.1.1
|
Unwind Descriptor Area
|
|
A.4.1.2
|
Region Header Records
|
|
A.4.1.3
|
Descriptor Records for Prologue Regions
|
|
A.4.1.4
|
Descriptor Records for Body Regions
|
|
A.4.1.5
|
Descriptor Records for Body or Prologue Regions
|
|
A.4.1.6
|
Rules for Using Unwind Descriptors
|
|
A.4.1.7
|
Processing Unwind Descriptors
|
|
A.4.2
|
Condition Handler
|
|
A.4.3
|
Operating System-Specific Data Area
|
|
A.4.3.1
|
General Information Segment
|
|
A.4.3.2
|
Caller Spill Register Information
|
|
A.4.4
|
Language-Specific Data Area
|
|
A.5
|
Default Unwind Information
|
|
A.6
|
System Unwind Routines
|
