JCL Help:TExcDesc
JCL Help: TExcDesc Record
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Summary
Except frame descriptor.
Pascal
PExcDesc = ^TExcDesc;
public TExcDesc = packed record
JMP: TJmpInstruction;
case Integer of
0: (Instructions: array [0..0] of Byte);
Cnt: Integer;
ExcTab: array [0..0] of TExcDescEntry););
end;
Members
| Members | Description |
| JMP: TJmpInstruction; | Holds the JMP-instruction incase of Delphi/C++Builder code |
| Instructions: array [0..0] of Byte); | Handler instructions for non "except on..."-blocks |
| Cnt: Integer; | Number of exception classes defined in an "except on..."-block |
| ExcTab: array [0..0] of TExcDescEntry); | Table of on-definitions and there handlers in an "except on..."-block |
Description
TExcDesc is an except frame descriptor.
For Delphi/C++Builder-generated modules this usually means a JMP instruction to either HandleFinally, HandleAnyException, HandleOnException or HandleAutoException. Incase of an HandleOnException, the JMP is followed by a table containing the Exception classes to handle and their handlers. In other cases the JMP is followed by the code to execute.
For other modules, the frame descriptor is undefined (but it always starts with executable code).
About
Unit
Donator
Borland/Codegear/Embarcadero
Notes
This type is copied from System.pas.
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