Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sun, 30 Mar 2014 17:01:39 +0200
From: Szabolcs Nagy <>
Subject: Re: Any plans on MMU-less support?

* Smirnov Vladimir <> [2014-03-30 15:49:08 +0900]:
> I wonder if MUSL have such roadmap or there is any hackish way to
> add that support (may be some unoffitial patches).
> My problem that i've stucked with old gcc toolchain and uClibc
> supporting one widely used ARMv4 MMUless chip.

looking at uClibc the main differences in a no-mmu system:

fork is not available so related functions have to be changed/disabled
(vfork, daemon, wordexp, forkpty, pthread_atfork)

brk is not available so malloc needs to change

mmap may need MAP_UNINITIALIZED flag for performance
(and MAP_FIXED flag will fail)

memory management related things may need to be changed/disabled

for dynamic linking ldso and libc startup code may need some change
(some targets (not arm) need fdpic or dsbt elf support)
(others can use a shared flat binary format)

pthread may need smaller default stack and more careful stack usage

arm startup code needs a change according to

and you may need to fix various toolchain issues..

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.