Commit cf0b5b27 authored Feb 09, 2022 by Ilya Leoshkevich Committed by Andrii Nakryiko Feb 08, 2022

libbpf: Fix accessing syscall arguments on riscv



riscv does not select ARCH_HAS_SYSCALL_WRAPPER, so its syscall
handlers take "unpacked" syscall arguments. Indicate this to libbpf
using PT_REGS_SYSCALL_REGS macro.

Reported-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220209021745.2215452-7-iii@linux.ibm.com

parent 5c101153

tools/lib/bpf/bpf_tracing.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -214,6 +214,8 @@
		#define __PT_RC_REG a5
		#define __PT_SP_REG sp
		#define __PT_IP_REG pc
		/* riscv does not select ARCH_HAS_SYSCALL_WRAPPER. */
		#define PT_REGS_SYSCALL_REGS(ctx) ctx

		#endif