This weekend i was offline and i has spend some dead times coding for
radare in my ipod touch,
yeah, thumb typing is not as optimal as a full keyboard, but enought to
manage a shell, gcc
and vim.
After some local hacky patches i moved the repo to my laptop and
prepared some patches to fix
the build of the debugger layer for the osx-arm target and fixed so many
bugs in the dietmach0
library (some endian related, added support for reading registers from
mach0 headers for x86,
arm and powerpc), and fixed an issue with the io.paddr (the virtual
physical address used while
mapping physical files in memory) that allowed me to properly run radare
with debugger on the
ipod, get all symbols properly and identify entrypoint and analyze some
functions.
The port of the debugger was about 1h, yeah, i has already told this so
many times, porting
radare to new os/archs is really easy (and hacky too), but fast to do.
The "not-so-good" news is that the debugger doesn't actually works on
ARM. This is because apple
has decided to change some things in the initialization steps for
attaching to a process are
different compared to the ones in x86-osx or powerpc-osx. But this is a
"minor" issue, that i
plan to fix before the next release.
About the mach0 support i want to make it complete for r1 and then
rewrite it for r2 for r_bin
allowing the insertion/deletion/manipulation of new sections, symbols,
etc.. but this will come
later. Actually im just playing with it to give an almost basic support
for this new platform.
For the people interested on trying it, just retrieve the last snapshot
in radare.org/get/shot
or pull the last hg tip. To compile it, i'm using a native gcc inside,
so, no SDKs or weird
software required to build on.
The current snapshot requires some include files that not shipped with
the default gcc from cydia.
But they can be retrieved from an SDK, but they can be easily ignored,
they are just dummy
structures and enums that i can hardcode in core and make it more
independent.
Betatesting is welcome for radare on osx-arm/x86/ppc (i only own arm/ppc)
--pancake
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