Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Solaris Modular Debugger Guide
Previous Next

Arithmetic Expansion

Arithmetic expansion is performed to determine the value of an expression. MDB commands can be preceded by expressions that represent a start address or a repeat count. Arithmetic expansion can also be performed to compute a numeric argument for a dcmd. An expression can appear in an argument list enclosed in square brackets preceded by a dollar sign ($[ expression ]). In this case, the expression is replaced by its arithmetic value.

Expressions can contain any of the following special words:

integer

The specified integer value. Integer values can be prefixed with 0i or 0I to indicate binary values, 0o or 0O to indicate octal values, 0t or 0T to indicate decimal values, and 0x or 0X to indicate hexadecimal values (the default).

0[tT][0-9]+.[0-9]+

The specified decimal floating point value, converted to its IEEE double-precision floating point representation.

'cccccccc'

The integer value computed by converting each character to a byte equal to its ASCII value. Up to eight characters can be specified in a character constant. Characters are packed into the integer in reverse order (right-to-left), beginning at the least significant byte.

<identifier

The value of the variable named by identifier.

identifier

The value of the symbol named by identifier.

(expression)

The value of expression.

.

The value of dot.

&

The most recent value of dot used to execute a dcmd.

+

The value of dot incremented by the current increment.

^

The value of dot decremented by the current increment.

The increment is a global variable that stores the total bytes read by the last formatting dcmd. For more information on the increment, refer to the discussion of Formatting Dcmds.

Unary Operators

Unary operators are right associative and have higher precedence than binary operators. The unary operators are:

#expression

Logical negation

~expression

Bitwise complement

-expression

Integer negation

%expression

Value of a pointer-sized quantity at the object file location corresponding to virtual address expression in the target's virtual address space

%/[csil]/expression

Value of a char-sized, short-sized, int-sized, or long-sized quantity at the object file location corresponding to virtual address expression in the target's virtual address space

%/[1248]/expression

Value of a one-byte, two-byte, four-byte, or eight-byte quantity at the object file location corresponding to virtual address expression in the target's virtual address space

*expression

Value of a pointer-sized quantity at virtual address expression in the target's virtual address space

*/[csil]/expression

Value of a char-sized, short-sized, int-sized, or long-sized quantity at virtual address expression in the target's virtual address space

*/[1248]/expression

Value of a one-byte, two-byte, four-byte, or eight-byte quantity at virtual address expression in the target's virtual address space

Binary Operators

Binary operators are left associative and have lower precedence than unary operators. The binary operators, in order of precedence from highest to lowest, are:

*

Integer multiplication

%

Integer division

#

Left-hand side rounded up to next multiple of right-hand side

+

Integer addition

-

Integer subtraction

<<

Bitwise shift left

>>

Bitwise shift right

==

Logical equality

!=

Logical inequality

&

Bitwise AND

^

Bitwise exclusive OR

|

Bitwise inclusive OR

Previous Next

 
 
  Published under the terms fo the Public Documentation License Version 1.01. Design by Interspire