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| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-09-02 09:59:44 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-15 22:13:20 +1000 |
| commit | fa725cc53d353110f39a9e5b9f60d6acb2c7ff49 (patch) | |
| tree | 486b0e3390d4495dc9e696846c1ac87aa9f8bfd0 /Documentation/powerpc | |
| parent | 58da5984d2ea6d95f3f9d9e8dd9f7e1b0dddfb3c (diff) | |
| download | lwn-fa725cc53d353110f39a9e5b9f60d6acb2c7ff49.tar.gz lwn-fa725cc53d353110f39a9e5b9f60d6acb2c7ff49.zip | |
powerpc/watchpoint/ptrace: Introduce PPC_DEBUG_FEATURE_DATA_BP_ARCH_31
PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 can be used to determine whether
we are running on an ISA 3.1 compliant machine. Which is needed to
determine DAR behaviour, 512 byte boundary limit etc. This was
requested by Pedro Miraglia Franco de Carvalho for extending
watchpoint features in gdb. Note that availability of 2nd DAWR is
independent of this flag and should be checked using
ppc_debug_info->num_data_bps.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200902042945.129369-8-ravi.bangoria@linux.ibm.com
Diffstat (limited to 'Documentation/powerpc')
| -rw-r--r-- | Documentation/powerpc/ptrace.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/powerpc/ptrace.rst b/Documentation/powerpc/ptrace.rst index 864d4b6dddd1..77725d69eb4a 100644 --- a/Documentation/powerpc/ptrace.rst +++ b/Documentation/powerpc/ptrace.rst @@ -46,6 +46,7 @@ features will have bits indicating whether there is support for:: #define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x4 #define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x8 #define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x10 + #define PPC_DEBUG_FEATURE_DATA_BP_ARCH_31 0x20 2. PTRACE_SETHWDEBUG |