I try compile program with following options :powerpc-8xx-eabi-gcc -fverbose-asm
-O2 -I../include -meabi -memb -msdata=eabi -Wa,-al -G10000  hello.c -o hello.o

The test program is simple one (end of this mail )
The manual clearly states:
-msdata=eabi
    On System V.4 and embedded PowerPC systems, put small initialized const
global and static data in the .sdata2 section, which is pointed to by register
r2. Put small initialized non-const global and static data in the .sdata
section, which is pointed to by register r13. 

So, the all data unnder 10000 bytes hould put in small data sections
and addressed with register relative instructions but this does not
happen. I even checked from produced assembly listing that it 
uses la instruction ( addi %r,0,<immediate>) instead using 
addi %r,%r2,<immediate> that forms address relative to r2 ( or r13 )

Also storing the valu e i is 
52 0028 90000000              stw 0,i@sda21(0)         #  i
instead sww 0,i(2)

Also, i can't pass it to linker because it gives
relocation truncated to fit: R_PPC_EMB_SDA21 hellos

Ithis my be my fault mut least i have not found solution 
anywhere how to make register relative ( position independent)
data to wark. The my main goal is just compile position independent
code and data for my open source Katix rtos. I ahave also tried many 
gcc versions starting from 2.x.x and got no-one working.

Kate

  
const char hellos[] = "hello: Hello, world!\n\r";
volatile int i;
 
 
int _start() {
  for(;;) {
    i=my_strlen(hellos);
    i=my_strlen("hello: Hello, world!\n\r");
  }
}
 
 
int my_strlen(char *s)
{
  int i=0;
  while(*s++) i++;
  return i;
}