Symbols
A symbol (also called an identifier) is a name that identifies a location in
memory. It consists of a sequence of characters that identify program and
debugger variables, macros, keywords,registers, memory addresses, and line
numbers.
Symbols may be up to 40 characters in length. The first character in a symbol
must be alphabetic, an underscore (_), or an at sign (@). The characters
allowed in a symbol include upper and lower case alphabetic characters,
numeric characters, dollar signs ($), at signs (@), or underscores (_). No
other characters may be used in symbols. The debugger differentiates between
upper case and lower case characters in a symbol.
The following sections describe the different categories of symbols used by the
debugger.
Program Symbols
Program symbols are identifiers associated with a source program. They
consist of symbolic variable data names and function names that the
programmer defined when writing the source program. All symbols that were
defined in the source program can be passed to the debugger and referenced
during a debugging session. Note that preprocessor names are not symbols.
The compiler includes all program symbol information in the resulting output
object module file by default. When you load an executable file for debugging,
the debugger places all program symbols into the debugger symbol table by
default. The debugger preserves symbol types and treats the symbols
according to their type.
The debugger may be instructed to load only global symbols at load time,
loading local symbols as they are referenced. This behavior is known as
symbols on demand. R efer to the description of the Debugger Option General
Demand_Load command in the “Debugger Commands” chapter for more
information on symbols on demand.
Normally, the compiler prefixes a leading underscore to all global program
symbols. This is done to distinguish program symbols from reserved assembler
names. If the debugger has loaded all symbols, two symbols will be available;
the high-level symbol (for example, main), and its low-level
Chapter 10: Expressions and Symbols in Debugger Commands
Symbols
424
Содержание 68000 Series
Страница 1: ...User s Guide HP B1466 68000 Series Debugger Simulator ...
Страница 22: ...Contents xxii ...
Страница 23: ...Part 1 Quick Start Guide ...
Страница 24: ...Part 1 2 ...
Страница 25: ...1 Getting Started with the Graphical Interface How to get started using the debugger s graphical interface 3 ...
Страница 57: ...Part 2 User s Guide ...
Страница 58: ...Part 2 36 ...
Страница 59: ...2 Entering Debugger Commands How to enter debugger commands using the mouse or the keyboard 37 ...
Страница 93: ...3 Loading and Executing Programs How to load a program into the debugger and control its execution 71 ...
Страница 140: ...Chapter 3 Loading and Executing Programs Using the Debugger with the Branch Validator 118 ...
Страница 141: ...4 Viewing Code and Data How to find and display source code and memory contents Chapter 4 Viewing Code and Data 119 ...
Страница 207: ...6 Using Macros and Command Files How to use macros and command files to make debugging easier 185 ...
Страница 234: ...Chapter 6 Using Macros and Command Files Using Command Files 212 ...
Страница 253: ...Window Delete 55 Window Delete 73 Chapter 7 Configuring the Debugger Modifying Display Area Windows 231 ...
Страница 266: ...Chapter 7 Configuring the Debugger Setting X Resources 244 ...
Страница 267: ...Part 3 Concept Guide ...
Страница 268: ...Part 3 246 ...
Страница 269: ...8 X Resources and the Graphical Interface An introduction to X resources 247 ...
Страница 281: ...Part 4 Reference ...
Страница 282: ...Part 4 260 ...
Страница 283: ...9 Debugger Commands Detailed descriptions of command line commands 261 ...
Страница 436: ...Chapter 9 Debugger Commands Window Toggle_View 414 ...
Страница 466: ...Chapter 10 Expressions and Symbols in Debugger Commands Symbolic Referencing 444 ...
Страница 467: ...11 Predefined Macros 445 ...
Страница 504: ...Chapter 11 Predefined Macros write 482 ...
Страница 505: ...12 Debugger Error Messages A list of the error messages generated by the debugger 483 ...
Страница 524: ...Chapter 12 Debugger Error Messages 502 ...
Страница 525: ...13 Debugger Versions Information about how this version of the debugger differs from previous versions 503 ...
Страница 531: ...Part 5 Installation Guide ...
Страница 532: ...Part 5 510 ...
Страница 533: ...14 Installation How to install the debugger software on your computer 511 ...
Страница 584: ...Index 562 ...