[bpf-next,v3,10/11] libbpf: Fix accessing syscall arguments on riscv

Commit Message

Ilya Leoshkevich Feb. 4, 2022, 2:50 p.m. UTC

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

Reported-by: Heiko Carstens <[e-mail]>
Signed-off-by: Ilya Leoshkevich <[e-mail]>
---
 tools/lib/bpf/bpf_tracing.h | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/tools/lib/bpf/bpf_tracing.h b/tools/lib/bpf/bpf_tracing.h
index 8629441304df..169d47aa0a79 100644
--- a/tools/lib/bpf/bpf_tracing.h
+++ b/tools/lib/bpf/bpf_tracing.h
@@ -214,6 +214,7 @@ 
 #define __PT_RC_REG a5
 #define __PT_SP_REG sp
 #define __PT_IP_REG pc
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
 
 #endif