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perf tools: Add dso__type()

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dso__type() determines wheather a dso is 32-bit, x32 (32-bit with 64-bit
registers) or 64-bit.

dso__type() will be used to determine the VDSO a program maps.

Reviewed-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1406035081-14301-51-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2014-07-22 16:17:59 +03:00
committed by Arnaldo Carvalho de Melo
parent 51682dc744
commit 2b5b8bb27b
5 changed files with 77 additions and 0 deletions
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21
tools/perf/util/symbol-minimal.c
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@@ -305,6 +305,27 @@ static int fd__is_64_bit(int fd)
return e_ident[EI_CLASS] == ELFCLASS64;
}
enum dso_type dso__type_fd(int fd)
{
Elf64_Ehdr ehdr;
int ret;
ret = fd__is_64_bit(fd);
if (ret < 0)
return DSO__TYPE_UNKNOWN;
if (ret)
return DSO__TYPE_64BIT;
if (readn(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
return DSO__TYPE_UNKNOWN;
if (ehdr.e_machine == EM_X86_64)
return DSO__TYPE_X32BIT;
return DSO__TYPE_32BIT;
}
int dso__load_sym(struct dso *dso, struct map *map __maybe_unused,
struct symsrc *ss,
struct symsrc *runtime_ss __maybe_unused,