libbpf: Move function is_ldimm64() earlier in libbpf.c

Move function is_ldimm64() close to the beginning of libbpf.c,
so it can be reused by later code and the next patch as well.
There is no functionality change.

Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210226204929.3885295-1-yhs@fb.com

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index d43cc3f29daee987c4dbde5a4ec3c018716d3fc4..21a3eedf070de1a487a924a8fbf15d6f69b29111 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -574,6 +574,11 @@ static bool insn_is_subprog_call(const struct bpf_insn *insn)
               insn->off == 0;
 }
 
+static bool is_ldimm64(struct bpf_insn *insn)
+{
+       return insn->code == (BPF_LD | BPF_IMM | BPF_DW);
+}
+
 static int
 bpf_object__init_prog(struct bpf_object *obj, struct bpf_program *prog,
                      const char *name, size_t sec_idx, const char *sec_name,
@@ -3395,7 +3400,7 @@ static int bpf_program__record_reloc(struct bpf_program *prog,
                return 0;
        }
 
-       if (insn->code != (BPF_LD | BPF_IMM | BPF_DW)) {
+       if (!is_ldimm64(insn)) {
                pr_warn("prog '%s': invalid relo against '%s' for insns[%d].code 0x%x\n",
                        prog->name, sym_name, insn_idx, insn->code);
                return -LIBBPF_ERRNO__RELOC;
@@ -5566,11 +5571,6 @@ static void bpf_core_poison_insn(struct bpf_program *prog, int relo_idx,
        insn->imm = 195896080; /* => 0xbad2310 => "bad relo" */
 }
 
-static bool is_ldimm64(struct bpf_insn *insn)
-{
-       return insn->code == (BPF_LD | BPF_IMM | BPF_DW);
-}
-
 static int insn_bpf_size_to_bytes(struct bpf_insn *insn)
 {
        switch (BPF_SIZE(insn->code)) {