libbpf: Define arc syscall regs spec in bpf_tracing.h

Define explicit table of registers used for syscall argument passing.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230120200914.3008030-23-andrii@kernel.org

tools/lib/bpf/bpf_tracing.h

@@ -392,13 +392,21 @@ struct pt_regs___arm64 {
 #define __PT_PARM6_REG scratch.r5
 #define __PT_PARM7_REG scratch.r6
 #define __PT_PARM8_REG scratch.r7
+
+/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
+#define PT_REGS_SYSCALL_REGS(ctx) ctx
+#define __PT_PARM1_SYSCALL_REG __PT_PARM1_REG
+#define __PT_PARM2_SYSCALL_REG __PT_PARM2_REG
+#define __PT_PARM3_SYSCALL_REG __PT_PARM3_REG
+#define __PT_PARM4_SYSCALL_REG __PT_PARM4_REG
+#define __PT_PARM5_SYSCALL_REG __PT_PARM5_REG
+#define __PT_PARM6_SYSCALL_REG __PT_PARM6_REG
+
 #define __PT_RET_REG scratch.blink
 #define __PT_FP_REG scratch.fp
 #define __PT_RC_REG scratch.r0
 #define __PT_SP_REG scratch.sp
 #define __PT_IP_REG scratch.ret
-/* arc does not select ARCH_HAS_SYSCALL_WRAPPER. */
-#define PT_REGS_SYSCALL_REGS(ctx) ctx
 
 #elif defined(bpf_target_loongarch)