Messages in this thread | | | Date | Wed, 14 Jun 2017 02:21:36 +0200 | From | Daniel Borkmann <> | Subject | Re: [PATCH 4/4] samples/bpf: Fix tracex5 to work with MIPS syscalls. |
| |
On 06/14/2017 01:49 AM, David Daney wrote: > There are two problems: > > 1) In MIPS the __NR_* macros expand to an expression, this causes the > sections of the object file to be named like: > > . > . > . > [ 5] kprobe/(5000 + 1) PROGBITS 0000000000000000 000160 ... > [ 6] kprobe/(5000 + 0) PROGBITS 0000000000000000 000258 ... > [ 7] kprobe/(5000 + 9) PROGBITS 0000000000000000 000348 ... > . > . > . > > The fix here is to use the "asm_offsets" trick to evaluate the macros > in the C compiler and generate a header file with a usable form of the > macros. > > 2) MIPS syscall numbers start at 5000, so we need a bigger map to hold > the sub-programs. > > Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
| |