STM32, position-independent code - function pointers not in GOT?

Question

STM32, position-independent code - function pointers not in GOT?

I need a position-independent code (PIC) running on the STM32F401. But I have a problem with pointers to the functions used, for example. in structure.

A brief example:

struct process {
  struct process *next;
  const char *name;
  PT_THREAD((* thread)(struct pt *, process_event_t, process_data_t));
  struct pt pt;
  unsigned char state, needspoll;
};

process etimer_process...

static void call_process(struct process *p, process_event_t ev, process_data_t data) {
  int ret;
  ret = p->thread(&p->pt, ev, data);
}

After assembly:

Disassembly of section .data:
   ...
 20000768 <etimer_process>:
 20000768:  00000000    andeq   r0, r0, r0
 2000076c:  0803b134    stmdaeq r3, {r2, r4, r5, r8, ip, sp, pc}
 20000770:  08027435    stmdaeq r2, {r0, r2, r4, r5, sl, ip, sp, lr}
 20000774:  00000000    andeq   r0, r0, r0
   ...

Disassembly of section .text:
   ...
 8027da4:   68fb        ldr r3, [r7, #12]  //R3 = 0x20000768
 8027da6:   689b        ldr r3, [r3, #8]   //R3 = 0x8027435
   ...
 8027db2:   4798        blx r3  //Branch to R3
   ...

The branch address in R3 is incorrect for code with an offset other than 0. I do not see the use of GOT here. Is this a bug or a missing compiler / linker option?

Things I probably successfully decided:

Got fixup
Fix interrupt table
Newlib compiled with corresponding flags

Used CFLAGS:

-mlittle-endian -mthumb -mthumb-interwork -mcpu = cortex-m4 -fsingle-precision-constant -Wdouble-promotion -msoft-float -fpic -msingle-pic-base -mpic-data-is-text- relative -mpic -register = r10 -Wno-strict-aliasing -lc

and binding to