Add support for BPF

Signed-off-by: Richard Henderson <[email protected]>

1 files changed, 60 insertions, 0 deletions

diff --git a/backends/bpf_init.c b/backends/bpf_init.c
new file mode 100644
index 00000000..22842e26
--- /dev/null
+++ b/backends/bpf_init.c
@@ -0,0 +1,60 @@
+/* Initialization of BPF specific backend library.
+   This file is part of elfutils.
+
+   This file is free software; you can redistribute it and/or modify
+   it under the terms of either
+
+     * the GNU Lesser General Public License as published by the Free
+       Software Foundation; either version 3 of the License, or (at
+       your option) any later version
+
+   or
+
+     * the GNU General Public License as published by the Free
+       Software Foundation; either version 2 of the License, or (at
+       your option) any later version
+
+   or both in parallel, as here.
+
+   elfutils is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received copies of the GNU General Public License and
+   the GNU Lesser General Public License along with this program.  If
+   not, see <http://www.gnu.org/licenses/>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#define BACKEND		bpf_
+#define RELOC_PREFIX	R_BPF_
+#include "libebl_CPU.h"
+
+/* This defines the common reloc hooks based on bpf_reloc.def.  */
+#define NO_RELATIVE_RELOC
+#define NO_COPY_RELOC
+#include "common-reloc.c"
+
+
+const char *
+bpf_init (Elf *elf __attribute__ ((unused)),
+	  GElf_Half machine __attribute__ ((unused)),
+	  Ebl *eh, size_t ehlen)
+{
+  /* Check whether the Elf_BH object has a sufficent size.  */
+  if (ehlen < sizeof (Ebl))
+    return NULL;
+
+  /* We handle it.  */
+  eh->name = "BPF";
+  bpf_init_reloc (eh);
+  HOOK (eh, register_info);
+#ifdef HAVE_LINUX_BPF_H
+  HOOK (eh, disasm);
+#endif
+
+  return MODVERSION;
+}