[PATCH v2 bpf-next 0/1] libbpf: usdt aarch64 support

[Alan Maguire <alan.maguire@oracle.com>]

USDT support [1] requires architecture-specific handling for translating
from argument strings describing each probe argument to appropriate values
that can be made available to the BPF program.  Determining value size,
whether it refers to a dereference (and if there is an offset from the
register value), a register value or a constant all have to be parsed
slightly differently for different architectures.  Details of format
handling for the aarch64 case are in patch 1.

Changes since v1:

- dropped patch refactoring all arch-specific parsing (Andrii)
- reworked sscanf()s to separate the two register dereference cases,
  made register parsing match [a-z0-9] in all cases (Andrii)

[1] https://lore.kernel.org/bpf/20220404234202.331384-1-andrii@kernel.org/

Alan Maguire (1):
  libbpf: usdt aarch64 arg parsing support

 tools/lib/bpf/usdt.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)

-- 
1.8.3.1