diff options
| author |   Wang Nan <wangnan0@huawei.com> | 2016-07-18 06:01:08 +0000 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-26 10:08:53 -0300 |
| commit | 9b16137ab0feec00f8c9b52a63d4034a6d199d30 (patch) | |
| tree | ec26a5f8b2c9ab6f3f08022792a668a1cf625dc4 /tools/lib/bpf | |
| parent | Merge tag 'perf-core-for-mingo-20160725' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (diff) | |
| download | linux-dev-9b16137ab0feec00f8c9b52a63d4034a6d199d30.tar.xz linux-dev-9b16137ab0feec00f8c9b52a63d4034a6d199d30.zip | |
tools lib bpf: Use official ELF e_machine value
New LLVM will issue newly assigned EM_BPF machine code. The new code
will be propagated to glibc and libelf.
This patch introduces the new machine code to libbpf.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1468821668-60088-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/bpf')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 32e6b6bc6f7d..b699aea9a025 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -37,6 +37,10 @@ #include "libbpf.h" #include "bpf.h" +#ifndef EM_BPF +#define EM_BPF 247 +#endif + #define __printf(a, b) __attribute__((format(printf, a, b))) __printf(1, 2) @@ -439,7 +443,8 @@ static int bpf_object__elf_init(struct bpf_object *obj) } ep = &obj->efile.ehdr; - if ((ep->e_type != ET_REL) || (ep->e_machine != 0)) { + /* Old LLVM set e_machine to EM_NONE */ + if ((ep->e_type != ET_REL) || (ep->e_machine && (ep->e_machine != EM_BPF))) { pr_warning("%s is not an eBPF object file\n", obj->path); err = -LIBBPF_ERRNO__FORMAT; |