Am Freitag, 18. Juli 2003 14:05 schrieb Wolfgang Denk:
If the mtmsr instruction is not "single step able", it should run, if I place a breakpoint behind this instruction (for example later in the C routines) and use "go" to run up the breakpoint. Or not?
Maybe. If you're using hardware breakpoints, for example.
I did use hardware breakpoints.
Perhaps my english is very bad. Question was: Why the cpu is running normal with "reset run", and did not run, when I enter "reset halt", enter a breakpoint and than "go" (it never reaches the breakpoint).
Which address is PC pointing to when you enter "go"?
0x700. It wants to handle an exeption (but at this point, there is no code present). So it hangs forever.
You may want to ask Abatron support for details about the exactl meaning of these options. My interpretation is that "reset run" means the same as a reset in startup mode run, while "reset halt" equivalents to a reset in startup mode stop. I never used any of these.
Why don't you use plain "reset" ? [Did you try it?]
My u-boot implementation hangs at a very late position. So I have to place a breakpoint before the point it hangs (to see what happens before the hang). But with "reset run" the breakpoint is lost....And with "reset halt", setting a breakpoint and "go" it hangs after a few instructions...Aaargh.
Thanks for your answers
-- JB