Le 07/10/2019 à 08:35, Ravi Bangoria a écrit :
On 9/25/19 9:36 AM, Ravi Bangoria wrote:
v3: https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-July/193339.html
v3->v4:
- Instead of considering exception as extraneous when dar is outside of
user specified range, analyse the instruction and check for overlap
between user specified range and actual load/store range.
- Add selftest for the same in perf-hwbreak.c
- Make ptrace-hwbreak.c selftest more strict by checking address in
check_success.
- Support for 8xx in ptrace-hwbreak.c selftest (Build tested only)
- Rebase to powerpc/next
@Christope, Can you please check Patch 5. I've just build-tested it
with ep88xc_defconfig.
@mpe, @mikey, Any feedback?
@Christophe, Is patch5 works for you on 8xx?
Getting the following :
root@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
Christophe