Hello everybody.

I'm compiling this piece of assembly and observing a strange behavior.

.section .vectors
   .code 32
   .arm
EXCEPTION_VECTORS:
      ldr   pc, resetvec
      ldr   pc, undefvec
      ldr   pc, swivec
      ldr   pc, pabtvec
      ldr   pc, dabtvec
      .word   0
      ldr   pc, irqvec
      ldr   pc, fiqvec
resetvec:   .word   _startup
undefvec:   .word   Undef_Handler
swivec:      .word   Swi_Handler
pabtvec:   .word   Pabt_Handler
dabtvec:   .word   Dabt_Handler
irqvec:      .word   IRQ_Handler_Entry
fiqvec:      .word   FIQ_Handler_Entry

   .section .text
   .code 32
   .arm
   .global _startup
   .extern main
Undef_Handler:
   B   Undef_Handler
Swi_Handler:
   B   Undef_Handler
Pabt_Handler:
   B   Undef_Handler
Dabt_Handler:
   B   Dabt_Handler
IRQ_Handler_Entry:
...

The .vectors section never appears in the resulting HEX code, as well I
can't find it in the extended listing generated by command:

arm-elf-objdump -h -S -C main.elf

This is what I find in the listing:

main.elf:     file format elf32-littlearm

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .vectors      0000003c  00000000  00000000  0000452c  2**0
                  CONTENTS, READONLY
  1 .text         000004f0  0010403c  0010403c  0000403c  2**2
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 .comment      00000048  00000000  00000000  00004568  2**0
                  CONTENTS, READONLY
  3 .debug_aranges 000000a8  00000000  00000000  000045b0  2**3
                  CONTENTS, READONLY, DEBUGGING
  4 .debug_pubnames 00000192  00000000  00000000  00004658  2**0
                  CONTENTS, READONLY, DEBUGGING
  5 .debug_info   00002055  00000000  00000000  000047ea  2**0
                  CONTENTS, READONLY, DEBUGGING
  6 .debug_abbrev 000005fe  00000000  00000000  0000683f  2**0
                  CONTENTS, READONLY, DEBUGGING
  7 .debug_line   00000380  00000000  00000000  00006e3d  2**0
                  CONTENTS, READONLY, DEBUGGING
  8 .debug_frame  000001ac  00000000  00000000  000071c0  2**2
                  CONTENTS, READONLY, DEBUGGING
  9 .debug_str    00000a48  00000000  00000000  0000736c  2**0
                  CONTENTS, READONLY, DEBUGGING
 10 .debug_loc    0000015d  00000000  00000000  00007db4  2**0
                  CONTENTS, READONLY, DEBUGGING
 11 .ARM.attributes 00000010  00000000  00000000  00007f11  2**0
                  CONTENTS, READONLY
 12 .debug_ranges 00000138  00000000  00000000  00007f28  2**3
                  CONTENTS, READONLY, DEBUGGING
Disassembly of section .text:

0010403c <Undef_Handler>:
  10403c:   eafffffe    b   10403c <Undef_Handler>
...

The assembly code is compiled with the following parameters:

arm-elf-gcc -c -mcpu=arm7tdmi -mthumb-interwork -I. -x
assembler-with-cpp -Wa,-adhlns=Cstartup.lst,-gdwarf-2 Cstartup.S -o
Cstartup.o

The linker script I use is:

OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
OUTPUT_ARCH(arm)
ENTRY(_startup)

/* Size of bootloader region */
BOOTSIZE = 0x00004000;

/* Size of application */
APPSIZE = 0x00005000;

/* Memory layout */
MEMORY
{
  ROM (rx) : ORIGIN = 0x00104000, LENGTH = 0x00005000
  RAM (rw) : ORIGIN = 0x00200000, LENGTH = 0x00004000
  REMAPPED (rwx) : ORIGIN = 0x00000000, LENGTH = LENGTH(RAM)
}

/* Section Definitions */
SECTIONS
{
  _stack = 0x00200000 + 16K;

  /* place vectors at 0x0 */
  .vectors :
  {
    _vectors_start = .;
    *(.vectors)
    KEEP(*(.vectors))
    _vectors_end = .;
  } >REMAPPED AT >ROM

  /* first section is .text which is used for code */
  .text : { *Cstartup.o (.text) } >ROM =0
  .text :
  {
    /* ARM exception vectors */
    /*_vectors_start = .;
    KEEP(*(.vectors))
    _vectors_end = .;
    KEEP(*Cstartup.o (.text))*/   /* Startup code */
    *(.text)      /* code */
    *(.rodata)      /* read-only data (constants) */
    *(.rodata*)

    *(.glue_7t) *(.glue_7)

  } >ROM =0
...

As you see I link vectors section to 0x0 address, so it should work just
fine as far as I understand.

Does anybody have an idea what the problem is?
Thanks a lot for any help!