[PATCH bpf-next v2 08/10] libbpf: Fix accessing syscall arguments on powerpc

[Ilya Leoshkevich <iii@xxxxxxxxxxxxx>]

powerpc's syscall handlers get "unpacked" arguments instead of a
struct pt_regs pointer. Indicate this to libbpf using PT_REGS_SYSCALL
macro.

Fixes: d084df3b7a4c ("libbpf: Fix the incorrect register read for syscalls on x86_64")
Reported-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
 tools/lib/bpf/bpf_tracing.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index 4a990111d9a8..c21aaecd711b 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -181,6 +181,7 @@
 #define __PT_RC_REG gpr[3]
 #define __PT_SP_REG sp
 #define __PT_IP_REG nip
+#define PT_REGS_SYSCALL(ctx) ctx
 
 #elif defined(bpf_target_sparc)
 
-- 
2.34.1