Hello. I do not know how to fix the problem, so I will describe the situation and its possible solution.
 Have a static code:

 .section FSWI_PATCH1, "ax", %progbits
 .arm 
 ldr pc, main_jumper

 .section FSWI_PATCH2,"ax",%progbits
 .arm

 main_jumper:
 .int swi_handler @ function

 FSWI_PATCH1 and FSWI_PATCH2 have static addresses. But I can`t compile it, give "internal_relocation (type: OFFSET_IMM) not fixed up". IAR compile it fine. I try to find bug in GAS and found this:

 tc-arm.c: 21867:
  case BFD_RELOC_ARM_OFFSET_IMM:
       if (section->use_rela_p)
       {
          code = fixp->fx_r_type;
          break;
       }

 I make it like that:
      if (section->use_rela_p)
       {
         code = fixp->fx_r_type;
         break;
       } else {
          code = BFD_RELOC_ARM_LDR_PC_G0;
          break;
       }

 And it correctly compile and generate 4 bytes of opcode like IAR. I do not know how to correctly fix this error, but the nature of the error, I think you understand.

 Sorry for my english :)