libbpf: Define sparc 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/20230120200914.3008030-21-andrii@kernel.org

tools/lib/bpf/bpf_tracing.h

@@ -325,6 +325,14 @@ struct pt_regs___arm64 {
 #define __PT_PARM4_REG u_regs[UREG_I3]
 #define __PT_PARM5_REG u_regs[UREG_I4]
 #define __PT_PARM6_REG u_regs[UREG_I5]
+
+#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 u_regs[UREG_I7]
 #define __PT_FP_REG __unsupported__
 #define __PT_RC_REG u_regs[UREG_I0]