HP 3000 Manuals HP 3000 Manuals
Special Variables
Table F-1. Special Variables
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| Variable | Description |
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| $var | Represents user-defined variables. They are of type |
| | long integer and do not take on the type of any |
| | expressions assigned to them. |
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| Hardware Registers | Represents the names of the registers, the program |
| | counter and stack, data, argument and return-value |
| | pointers. |
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| $r0...$r31 | General Registers |
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| $f0...$f15 | Floating Point Registers |
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| $pc | Program Counter |
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| $sp | Stack Pointer |
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| $dp | Data Pointer |
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| $arg0...$arg3 | Argument Registers |
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| $ret0...$ret1 | Return-value Registers |
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| $result | References the return value from the last command line |
| | procedure call. $short and $long are used as other ways |
| | of viewing $result. Where possible, $result takes on |
| | the type of the procedure. |
| | |
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| $lang | Allows you to view and modify the current source |
| | language flag for expression evaluations. Valid values |
| | for $lang are C, FORTRAN, Pascal, COBOL, and default. |
| | When $lang is set to "default", any language expression |
| | syntax is always the same as the source language of the |
| | procedure currently being viewed. |
| | |
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Table F-1. Special Variables (cont.)
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| Variable | Description |
| | |
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| $line | Displays the current source line number (the next |
| | statement to be executed). It is automatically set by a |
| | number of different commands. |
| | |
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| $malloc | Allows you to see the amount of memory (in bytes) |
| | currently allocated by the debugger for its own use. |
| | This does not reflect memory use of the program being |
| | debugged. |
| | |
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| $step | Allows you to see and change the number of machine |
| | instructions the debugger steps through while in a |
| | non-debuggable procedure, before setting an uplevel |
| | breakpoint and free-running to it. This situation |
| | occurs only when the program is executing in single-step |
| | or assertion mode. |
| | |
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