The Stack Frame Pane in the Process Window lists the contents of CPU registers for the selected frame—you might need to scroll past the stack local variables to see them.
You must quote the initial $ character in the register name; for example, dprint \$r1.
For your convenience, TotalView displays the bit settings of many CPU registers symbolically. For example, TotalView symbolically displays registers that control rounding and exception enable modes. You can edit the values of these registers and then resume program execution. For example, you might do this to examine the behavior of your program with a different rounding mode.
Since the registers that are displayed vary from platform to platform, see “Architectures” in the TotalView for HPC Reference Guide for information on how TotalView displays this information on your CPU. For general information on editing the value of variables (including registers), see "Displaying Areas of Memory". To learn about the meaning of these registers, see the documentation for your CPU.