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Copyright © 2000 Hewlett-Packard Co. Getting Started: A Ski Tutorial 1-13
Ski IA-64 Simulator Reference Manual 1.0L
the Main Window. Ski tells you why it stopped and gives you statistics about program execution up to this point, as you
can see in Figure 1-18. The Program Window marks the next instruction to be fetched with a greater-than symbol in the
second column. If the instruction is predicated off, Ski uses an asterisk instead of a greater-than symbol, and shows the
predication register in parentheses.
Move and resize your windows so the Main Window and Program Window don’t overlap. Now use the “step” command
or
Step
button to execute one instruction. Note that the greater-than symbol moves down one line: Ski keeps track of IA-
64 bundles and groups but it simulates individual instructions. You can follow the “step” command with a (decimal)
number to specify how many steps Ski should take, for example, “step 10” to execute ten instructions. As a shortcut,
shift-clicking on the
Step
button causes Ski to take ten steps. Most Ski commands can be abbreviated, as described in
Appendix A, “Command Reference”. The step command can be abbreviated as “s”.
1.2.11 Changing Registers and Memory
To debug a program, you usually need to inspect and alter registers and memory. The first three panes in the Register Win-
dow shows the registers of most concern to application programmers: user registers in the first pane, general registers in
the second pane, and floating point registers in the third pane, as you can see in Figure 1-19.
Figure 1-18. The Main Window After Reaching the Breakpoint at main+10