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| author | Alan Maguire <alan.maguire@oracle.com> | 2022-04-11 16:21:36 +0100 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2022-04-11 15:32:28 -0700 |
| commit | 0f8619929c572609f7cdfa366d0424c2c2552e60 (patch) | |
| tree | 8de688ef38cf3f54f3c818fc4e9889bea13a8f6b /tools/lib/bpf/usdt.bpf.h | |
| parent | aa1b02e674fe69acd04624f5bcdef94928bc8695 (diff) | |
libbpf: Usdt aarch64 arg parsing support
Parsing of USDT arguments is architecture-specific. On aarch64 it is
relatively easy since registers used are x[0-31] and sp. Format is
slightly different compared to x86_64. Possible forms are:
- "size@[reg[,offset]]" for dereferences, e.g. "-8@[sp,76]" and "-4@[sp]";
- "size@reg" for register values, e.g. "-4@x0";
- "size@value" for raw values, e.g. "-8@1".
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/1649690496-1902-2-git-send-email-alan.maguire@oracle.com
Diffstat (limited to 'tools/lib/bpf/usdt.bpf.h')
0 files changed, 0 insertions, 0 deletions