Toolchain guidance needed

[prairie]

Optional you can try this:

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arm-v7a8-linux-gnueabi-gcc -O2 -c helloworld.c -o helloworld.o
arm-v7a8-linux-gnueabi-gcc -shared -Wl -o hello helloworld.o

ok, some progress. Above generated error:

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relocation R_ARM_ABS_NC against a local symbol can not be used when making a shared object: recompile with -fPIC

So after recompile with fPIC, uploaded result to TV and it doesn't segfault now but gives "illegal instruction"

[juusso]

what code you try to compile? what is your sourcefile?

[prairie]

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#include <stdio.h>

main()
{
  printf("Hello world!\n");
}

[arris69]

let the compiler do the job:

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<fullpath>/arm-v7a8-linux-gnueabi-gcc -o hello helloworld.c

if you like to make preprocess/compile/linking manually then you have to pass all required parameters to the compiler/assambler/linker...

[prairie]

let the compiler do the job:

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<fullpath>/arm-v7a8-linux-gnueabi-gcc -o hello helloworld.c

if you like to make preprocess/compile/linking manually then you have to pass all required parameters to the compiler/assambler/linker...

I tried that first. Which is what led me to think it's a toolchain issue because that segfaults too.

[juusso]

Try this code:

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#include <stdio.h>

int main()
{
   printf("Hello World!\n");
   return 0;
}

and arris`s cmdline

p.s. segfaults are not because of toolchain, but because of your code.
p.p.s this ok for me:

SpoilerShow

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root@[TV] /mtd_rwcommon> chmod 755 ./hello
root@[TV] /mtd_rwcommon> ./hello
Hello World!

[prairie]

Problem was not toolchain or code, was stupid filezilla ftp upload of executable. When I copy over via USB stick it's fine.

[bugficks]

heh, text vs. binary xfer mode?

[prairie]

heh, text vs. binary xfer mode?

no, I use it for binary transfer all the time between home and work machines, it's something unique about TV.

So far tested on my TV:

STFU - works.
SleepTimer - crashes exeDSP (must be changed function here)

[juusso]

SleepTimer - crashes exeDSP (must be changed function here)

possible. We checked only GAS* code, but GAP* needs to be checked/tested. Do you have IDA bin file of your fw?