Messages in this thread | | | Subject | Re: [PATCH v2 0/8] clean up vdso-layout.lds.S | From | Petr Tesarik <> | Date | Mon, 15 Jun 2009 19:45:57 +0200 |
| |
H. Peter Anvin píše v Po 15. 06. 2009 v 09:51 -0700: > Petr Tesarik wrote: > > Petr Tesarik píše v Po 15. 06. 2009 v 17:16 +0200: > >> [...] > >> An example can probably explain it better: > >> > >> $ cat >shared.c <<EOF > >> int shared_object[100]; > >> EOF > >> $ cat >exe.c <<EOF > >> #include <stdio.h> > >> extern int shared_object[100]; > >> int main(void) { > >> printf("%p\n", &shared_object); > >> return 0; > >> } > >> EOF > > > > BTW this example demonstrates that there is one section which should be > > included in .data but is not: > > > > *(COMMON) > > > > I'll send a patch later. > > > > *(COMMON) is BSS, not data...
Very true, but for the vDSO we decided to put both writeable and read-only data into one section (called .data for that matter), probably to reduce the number of sections and hence also the size of the resulting binary.
Petr Tesarik
-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |