HP UX SoftBench Software Viewing Assembly Language and CPU Registers, Tracing Assembly Language

Using SoftBench Debugger

Viewing Assembly Language and CPU Registers

Viewing Assembly Language and CPU Registers

SoftBench Debugger is intended as a high-level (source language) debugging aid. However, sometimes it is useful to examine your program's behavior at the assembly language level. This can help you determine when you have misunderstood something about the way the compiler works.

You can examine the machine code produced by the compiler for your program and step your program at the assembly code level. You can examine processor and floating point registers and see how these change.

Tracing Assembly Language

The "Show: Assembly Instructions…" menu choice brings up the

"Assembly Instructions" window. (See Figure 7-11.) This dialog box contains a scrollable view of the assembly language code for the current procedure of your program. The format of the code depends on your system. The window normally shows the following:

•Source line number

•Memory address

•Disassembly listing of the actual machine code To set a breakpoint at the assembly level:

1.Select the address (in the "Assembly Instructions" window). This copies the address into the "()" input box.

2.Choose "Break: Set At Hex Address ( )".

You can also click the left mouse button in the Annotation Margin of the "Assembly Instructions" window, or press the right mouse button on the desired assembly line, to set or clear breakpoints.

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