Thread (35 messages) 35 messages, 2 authors, 2016-01-13

[PATCH v6 11/21] arm64: ilp32: introduce binfmt_ilp32.c

From: arnd@arndb.de (Arnd Bergmann)
Date: 2016-01-12 23:06:29
Also in: lkml

On Tuesday 12 January 2016 19:46:41 Yury Norov wrote:
On Fri, Jan 08, 2016 at 10:08:44AM +0100, Arnd Bergmann wrote:
quoted
On Friday 08 January 2016 02:34:29 Yury Norov wrote:
quoted
+
+#include "../../../fs/compat_binfmt_elf.c"
This is the wrong file, you have to include fs/binfmt_elf.c, otherwise
you pick up the same definitions that you have for the other one.
I chose compat as it's how it wokrs now. It redefines some types like
user_long_t, and I think it's neccessary for ILP32, as for aarch32.
I really think the double indirection adds way too much complexity
here, it makes it rather hard to understand what is going on, and
that leads to bugs.

fs/compat_binfmt_elf.c is not doing much at all, and most of it is not
actually needed if you just make a copy of that file and fill in the
data as needed. Some of the overrides (ELF_ARCH, ELF_PLATFORM, ELF_NREG,
ELF_HWCAP, ELF_HWCAP2) are identical between ilp32 and lp64 modes
for arm64, but are different for arm32 compat, so you don't even have
to override them at all.

	Arnd
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