 RealView Assembler User's Guide | |
| Home Products Events Support | |
Technical Support
On-Line Manuals
RealView Assembler User's Guide
Preface Introduction Writing ARM Assembly Language Assembler Reference Command syntax
Obtaining a list of available options Specifying command‑line options with an environm AAPCS Floating‑point model Memory access attributes Pre‑executing a SET directive Splitting long LDMs and STMs Listing output to a file Project template options Controlling the output of diagnostic messages Controlling exception table generation Format of source lines Predefined register and coprocessor names Predeclared register names Predeclared extension register names Predeclared coprocessor names Built‑in variables and constants Symbols Symbol naming rules Variables Numeric constants Assembly time substitution of variables Labels Local labels Expressions, literals, and operators String expressions String literals Numeric expressions Numeric literals Floating‑point literals Register‑relative and program‑relative express Logical expressions Logical literals Operator precedence Unary operators Binary operators Diagnostic messages Interlocks IT block generation Thumb branch target alignment Using the C preprocessor ARM and Thumb Instructions Directives ReferenceControlling exception table generation
  | |||
  |  | ||
| |||
| Home > Assembler Reference > Command syntax > Controlling exception table generation | |||
There are four options that control exception table generation:
‑‑exceptionsInstructs the assembler to switch on exception table generation for all functions encountered.
‑‑no_exceptionsInstructs the assembler to switch off exception table generation. No tables are generated. This is the default.
‑‑exceptions_unwindInstructs the assembler to produce unwind tables for functions where possible. This is the default.
‑‑no_exceptions_unwindInstructs the assembler to produce nounwind tables for every function.
For finer control, use FRAME UNWIND ON and FRAME UNWIND OFF directives, see FRAME UNWIND ON and FRAME UNWIND OFF.
A function is code encased by PROC/ENDP or FUNC/ENDFUNC directives.
An exception can propagate through a function with an unwind table. The assembler generates the unwinding information from debug frame information.
An exception cannot propagate through a function with a nounwind table. The exception handling runtime environment terminates the program if it encounters a nounwind table during exception processing.
The assembler can generate nounwind table entries for all functions and non‑functions. The assembler can generate an unwind table for a function only if the function contains sufficient FRAME directives to describe the use of the stack within the function. Functions must conform to the conditions set out in the Exception Handling ABI for the ARM Architecture [EHABI], section 9.1 Constraints on Use. If the assembler cannot generate an unwind table it generates a nounwind table.
| Copyright © 2007 ARM Limited. All rights reserved. | ARM DUI 0379A |
 PDF version | |
| Home > Assembler Reference > Command syntax > Controlling exception table generation | |
| |
| Contact Site Map Press Privacy | Copyright © 2008 Keil™, An ARM® Company. All rights reserved. |
