CODEWITHSUNDEEP
armembedded-linuxelf
user6903
user6903

Reputation: 143

Cross compile from linux to ARM-ELF (armv5tejl )

I have installed all cross compile packages on my ubuntu system so far but am having a problem and need some help.

Linux 2.6.28.7 #1  CST 2012 armv5tejl unknown

$ cat /proc/cpuinfo
Processor       : ARM926EJ-S rev 5 (v5l)
BogoMIPS        : 199.47
Features        : swp half fastmult edsp java
CPU implementer : 0x41
CPU architecture: 5TEJ
CPU variant     : 0x0
CPU part        : 0x926
CPU revision    : 5

Hardware        : ServerEngines PILOT3
Revision        : 0000
Serial          : 0000000000000000


user@ubuntu:~/code$ arm-linux-gnueabi-readelf -h xxx.bin 
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 61 00 00 00 00 00 00 00 00 
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            ARM
  ABI Version:                       0
  Type:                              EXEC (Executable file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0xa27c
  Start of program headers:          52 (bytes into file)
  Start of section headers:          128752 (bytes into file)
  Flags:                             0x2, GNU EABI, <unknown>
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         6
  Size of section headers:           40 (bytes)
  Number of section headers:         25
  Section header string table index: 24

This is the target machine I need to cross compile for. What flags should I use when compiling?

arm-linux-gnueabi-gcc simple.c -march=armv5 -static -o simplev5
arm-linux-gnueabi-gcc simple.c -mcpu=arm926ej-s -static -o simple926

when I run the simplev5 or simple926, show:

Segmentation fault

follow @Steven P advice， I checked the file format， as follows:

user@ubuntu:~/code$ file simplev5
simplev5: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, for GNU/Linux 3.2.0, BuildID[sha1]=f0607da1d809a7d98636d76ee0e538fc828e3b65, not stripped
user@ubuntu:~/code$ file simple926 
simple926: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically linked, for GNU/Linux 3.2.0, BuildID[sha1]=ed1e6fdade02c0d2c985a503dafb6efadd13522f, not stripped

Upvotes: 3

Views: 2284

Answers (1)

Steven P
Steven P

Reputation: 305

You most likely have the right compilation or you would get an error about Invalid Format. You can confirm you have the proper file format by using:

file simple926

Try a simpler program:

int main() { return 123; }

Then you can check the result code when you run it to confirm it did something.

./simple926
echo $?

To solve your segmentation fault, you probably need to get out gdb and examine the stack (backtrace).

Upvotes: 2

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