Posted by nichtgedacht on 2017-05-10 15:44

I can not follow what you are telling us. The elf file is an image which contains information how to load the structure of the executeable to the location from where it gets executed.
Here we have the problem, that a flash programmer, openocd in this case, programs the elf header itself to flash memory. There is nothing wrong with the generation of the elf file.

The application is already relocated above the bootloader:

from STM32F103CBTx_FLASH.ld:

MEMORY
{
RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 20K
FLASH (rx)      : ORIGIN = 0x8004000, LENGTH = 112K
/* FLASH (rx)      : ORIGIN = 0x8000000, LENGTH = 128K */
}

from system_stm32f1xx.c:

#define VECT_TAB_OFFSET  0x4000
//#define VECT_TAB_OFFSET  0x0 /*!< Vector Table base offset field. This value must be a multiple of 0x200. */

A look into the elf file:

objdump -x /array_data01/STM32-34/mini-sys/Debug/mini-sys.elf

/array_data01/STM32-34/mini-sys/Debug/mini-sys.elf:     file format elf32-littlearm
/array_data01/STM32-34/mini-sys/Debug/mini-sys.elf
architecture: arm, flags 0x00000112:
EXEC_P, HAS_SYMS, D_PAGED
start address 0x0800da45

Program Header:
    LOAD off    0x00000000 vaddr 0x08000000 paddr 0x08000000 align 2**16
         filesz 0x00012e88 memsz 0x00012e88 flags rwx
    LOAD off    0x00020000 vaddr 0x20000000 paddr 0x08012e88 align 2**16
         filesz 0x000003f0 memsz 0x000024dc flags rw-
    LOAD off    0x000224dc vaddr 0x200024dc paddr 0x08013278 align 2**16
         filesz 0x00000000 memsz 0x00000604 flags rw-
private flags = 5000200: [Version5 EABI] [soft-float ABI]

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .isr_vector   0000010c  08004000  08004000  00004000  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  1 .text         0000c4a4  08004110  08004110  00004110  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 .rodata       000028c0  080105b8  080105b8  000105b8  2**3
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  3 .ARM          00000008  08012e78  08012e78  00012e78  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  4 .init_array   00000004  08012e80  08012e80  00012e80  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  5 .fini_array   00000004  08012e84  08012e84  00012e84  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  6 .data         000003f0  20000000  08012e88  00020000  2**2
                  CONTENTS, ALLOC, LOAD, DATA
  7 .bss          000020ec  200003f0  08013278  000203f0  2**3
                  ALLOC
  8 ._user_heap_stack 00000604  200024dc  08013278  000224dc  2**0
                  ALLOC
  9 .ARM.attributes 0000002b  00000000  00000000  000203f0  2**0
                  CONTENTS, READONLY
 10 .debug_info   0002281d  00000000  00000000  0002041b  2**0
                  CONTENTS, READONLY, DEBUGGING
 11 .debug_abbrev 0000654b  00000000  00000000  00042c38  2**0
                  CONTENTS, READONLY, DEBUGGING
 12 .debug_loc    0000ff9f  00000000  00000000  00049183  2**0
                  CONTENTS, READONLY, DEBUGGING
 13 .debug_aranges 00001670  00000000  00000000  00059128  2**3
                  CONTENTS, READONLY, DEBUGGING
 14 .debug_ranges 00001b80  00000000  00000000  0005a798  2**3
                  CONTENTS, READONLY, DEBUGGING
 15 .debug_macro  00022e2f  00000000  00000000  0005c318  2**0
                  CONTENTS, READONLY, DEBUGGING
 16 .debug_line   0001e9be  00000000  00000000  0007f147  2**0
                  CONTENTS, READONLY, DEBUGGING
 17 .debug_str    000a08d6  00000000  00000000  0009db05  2**0
                  CONTENTS, READONLY, DEBUGGING
 18 .comment      0000006e  00000000  00000000  0013e3db  2**0
                  CONTENTS, READONLY
 19 .debug_frame  000049a8  00000000  00000000  0013e44c  2**2
                  CONTENTS, READONLY, DEBUGGING
SYMBOL TABLE:
08004000 l    d  .isr_vector    00000000 .isr_vector
...