Xmon allows overwriting breakpoints because it's supported by only one dawr. But with multiple dawrs, overwriting becomes ambiguous or unnecessary complicated. So let's not allow it.
Signed-off-by: Ravi Bangoria <ravi.bango...@linux.ibm.com> Reviewed-by: Michael Neuling <mi...@neuling.org> --- arch/powerpc/xmon/xmon.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index d8c0f01e4b24..99e9138661e4 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -1382,6 +1382,10 @@ bpt_cmds(void) printf("Hardware data breakpoint not supported on this cpu\n"); break; } + if (dabr.enabled) { + printf("Couldn't find free breakpoint register\n"); + break; + } mode = 7; cmd = inchar(); if (cmd == 'r') -- 2.21.1