[Mono-dev] mono 2.2 rc2 on ARM issues

[Rodrigo Kumpera]

The mono_arch_flush_icache is wrong, it passes a pointer to the end
of the code buffer and not to the beggining.

It should be mono_arch_flush_icache (buf, code - buf);


On Thu, Dec 11, 2008 at 5:35 PM, Cliff Brake <cliff.brake at gmail.com> wrote:

> I have traced it down to the kernel image.  The kernel that works is
> virtually identical, but likely compiled with a older toolchain.  The
> only other difference is a minor defconfig change with the MTD
> partition setup.
>
> Tracing with gdb on the bad (more recent) kernel image, I get:
>
> Program received signal SIGILL, Illegal instruction.
> mono_arch_flush_icache (code=0x0, size=<value optimized out>) at
> mini-arm.c:595
> 595     }
>
> (gdb) bt
> #0  mono_arch_flush_icache (code=0x0, size=<value optimized out>)
>    at mini-arm.c:595
> #1  0x000d1a08 in mono_arch_create_trampoline_code_full (
>    tramp_type=MONO_TRAMPOLINE_JIT, code_size=0xbeddde34, ji=0xbedddbbc,
> aot=0)
>    at tramp-arm.c:365
> #2  0x000d1d0c in mono_arch_create_trampoline_code (
>    tramp_type=MONO_TRAMPOLINE_JIT) at tramp-arm.c:160
> #3  0x000bce08 in mono_trampolines_init () at mini-trampolines.c:691
> #4  0x0001aa2c in mini_init (filename=0xbedddf17 "test.exe",
>    runtime_version=0x0) at mini.c:14310
> #5  0x0009ff14 in mono_main (argc=2, argv=0xbeddde34) at driver.c:1545
> #6  0x401ed9cc in __libc_start_main () from /lib/libc.so.6
> #7  0x00019214 in _start ()
>
> Looks like this could be a fun one to track down.
>
> Cliff
>
> On Thu, Dec 11, 2008 at 11:32 AM, Cliff Brake <cliff.brake at gmail.com>
> wrote:
> > It appears I have some type of system problem as the 2.2 mono binaries
> > run on a older rootfs, so I'm now tracking down what all has changed
> > in the system.
> >
> > It appears that VFP is the correct option as a simple floating point
> > test app works.
> >
> > Cliff
> >
> > On Wed, Dec 10, 2008 at 5:47 PM, Cliff Brake <cliff.brake at gmail.com>
> wrote:
> >> Hello,
> >>
> >> I'm trying to run mono 2.2 on ARM, and mono is crashing fairly early
> >> (see attached).  Note, it has not accessed the test.exe file yet.
> >>
> >> Setup:
> >> - PXA270 CPU (armv5te)
> >> - fairly recent OE toolchain (EABI,  4.2.4)
> >> - hardcoded ARM_FPU_VFP=1
> >>
> >> Questions:
> >> 1) has anyone run mono 2.2 on ARM?
> >> 2) is VFP the correct FP config?  I have tried soft-float as well with
> >> the same result.
> >> 3) any suggestions on how to debug this or what I should look at next.
> >>
> >> Thanks,
> >> Cliff
> >>
> >> --
> >> =======================
> >> Cliff Brake
> >> http://bec-systems.com
> >>
> >
> >
> >
> > --
> > =======================
> > Cliff Brake
> > http://bec-systems.com
> >
>
>
>
> --
> =======================
> Cliff Brake
> http://bec-systems.com
> _______________________________________________
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>
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