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authorArnaldo Carvalho de Melo <acme@redhat.com>2016-07-13 15:28:51 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-07-13 15:38:50 -0300
commit774bec3fddcccb0b36f319c6d6e8148dc5e8c937 (patch)
tree063f78e8496f744cac164ad665b672c4e3927c98 /tools/objtool
parent2a00f026a15d161b47ba3d3417d0fec5193468c3 (diff)
downloadlinux-774bec3fddcccb0b36f319c6d6e8148dc5e8c937.tar.bz2
objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ
Not all libelf implementations have this "Please, ELF_C_READ, but use mmap if possible" elf_begin() cmd, so provide a fallback to plain old ELF_C_READ. Case in point: Alpine Linux 3.4. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-1fctuknrawgoi5xqon4mu9dv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/objtool')
-rw-r--r--tools/objtool/elf.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index e11f6b69cce6..0d7983ac63ef 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -30,6 +30,13 @@
#include "elf.h"
#include "warn.h"
+/*
+ * Fallback for systems without this "read, mmaping if possible" cmd.
+ */
+#ifndef ELF_C_READ_MMAP
+#define ELF_C_READ_MMAP ELF_C_READ
+#endif
+
struct section *find_section_by_name(struct elf *elf, const char *name)
{
struct section *sec;