[PATCH v4 0/5] Powerpc/Watchpoint: Few important fixes

[Christophe Leroy]

Le 10/10/2019 à 06:44, Ravi Bangoria a écrit :
> 
>>> @Christophe, Is patch5 works for you on 8xx?
>>>
>>
>> Getting the following :
>>
>> root at vgoip:~# ./ptrace-hwbreak
>> test: ptrace-hwbreak
>> tags: git_version:v5.4-rc2-710-gf0082e173fe4-dirty
>> PTRACE_SET_DEBUGREG, WO, len: 1: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 2: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 4: Ok
>> PTRACE_SET_DEBUGREG, WO, len: 8: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 1: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 2: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 4: Ok
>> PTRACE_SET_DEBUGREG, RO, len: 8: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 1: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 2: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 4: Ok
>> PTRACE_SET_DEBUGREG, RW, len: 8: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok
>> PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Fail
>> failure: ptrace-hwbreak
>>
> 

I also tried on a 83xx (book3s/32). This one has a regular DABR :

root at vgoippro:~# ./ptrace-hwbreak
test: ptrace-hwbreak
tags: git_version:v5.4-rc2-710-gf0082e173fe4-dirty
PTRACE_SET_DEBUGREG, WO, len: 1: Ok
PTRACE_SET_DEBUGREG, WO, len: 2: Ok
PTRACE_SET_DEBUGREG, WO, len: 4: Ok
PTRACE_SET_DEBUGREG, WO, len: 8: Ok
PTRACE_SET_DEBUGREG, RO, len: 1: Ok
PTRACE_SET_DEBUGREG, RO, len: 2: Ok
PTRACE_SET_DEBUGREG, RO, len: 4: Ok
PTRACE_SET_DEBUGREG, RO, len: 8: Ok
PTRACE_SET_DEBUGREG, RW, len: 1: Ok
PTRACE_SET_DEBUGREG, RW, len: 2: Ok
PTRACE_SET_DEBUGREG, RW, len: 4: Ok
PTRACE_SET_DEBUGREG, RW, len: 8: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, WO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RO, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_EXACT, RW, len: 1: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, WO, len: 6: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RO, len: 6: Ok
PPC_PTRACE_SETHWDEBUG, MODE_RANGE, DW ALIGNED, RW, len: 6: Ok
PPC_PTRACE_SETHWDEBUG failed: Invalid argument
failure: ptrace-hwbreak

Christophe