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OUTPUT_FORMAT("elf32-i386")
ENTRY(_loader)
virt = 0xC0100000; /* 3 gig */
phys = 0x100000; /* 1 meg */
SECTIONS
{ .text virt : AT(phys)
{ code = .;
*(.text)
. = ALIGN(4096);
}
.data : AT(phys + (data - code))
{ data = .;
*(.data)
. = ALIGN(4096);
}
.bss : AT(phys + (bss - code))
{ bss = .;
*(.bss)
*(COMMON)
. = ALIGN(4096);
}
end = .;
}

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root (fd0)
 Filesystem type is fat, using whole disk
kernel /boot/kernel.elf
   [Multiboot-elf, <0x0:0xeb6:0x0>

Error 28: Selected item cannot fit into memory

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Program Header:
    LOAD off    0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**12
         filesz 0x00000eb6 memsz 0x00000eb6 flags r--
    LOAD off    0x00001000 vaddr 0xc0100000 paddr 0x00100000 align 2**12
         filesz 0x00003000 memsz 0x00003000 flags r-x
    LOAD off    0x00004000 vaddr 0xc0103000 paddr 0x00103000 align 2**12
         filesz 0x00001000 memsz 0x00002000 flags rw-
   STACK off    0x00000000 vaddr 0x00000000 paddr 0x00000000 align 2**2
         filesz 0x00000000 memsz 0x00000000 flags rwx

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fixed it... have converted my entry point from at&t to intel syntax and placed 'section .entry' at the top, put it in my linker script to make the addresses OK, and where everything has been set up i put a 'section .text'. the only problem is that bochs 'reboots' here:

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it looks ok with an objdump -S, but still bochs crashes on it. I didn't test it on a real machine yet. can anybody find what's wrong?

thanks.
   
   jmp continue                   ; i suppose it crashes here
   
section .text

continue:
   add esp, 0xC0000000
unpage_first: ;unpage the first table
; . . .

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Idx Name          Size      VMA       LMA       File off  Algn
  0 .entry        000000c0  00100000  00100000  00001000  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  1 .text         00002ff6  c01000c0  001000c0  000010c0  2**5
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 .data         00000194  c01030c0  001030c0  000040c0  2**5
                  CONTENTS, ALLOC, LOAD, DATA
  3 .bss          00000a30  c0103260  00103260  00004260  2**5
                  ALLOC

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1000b0:   0f 20 c0                mov    %cr0,%eax
  1000b3:   0d 00 00 00 80          or     $0x80000000,%eax
  1000b8:   0f 22 c0                mov    %eax,%cr0
  1000bb:   e9 00 00 00 c0          jmp    c01000c0 <code>
Disassembly of section .text:

c01000c0 <code>:
c01000c0:   81 c4 00 00 00 c0       add    $0xc0000000,%esp

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infoheader:   dd 0 ; space for saving the info struct
_loader:
   mov dword [infoheader], ebx ; save the address in ebx in infoheader

;somewhat later in the code...
; fill in the table with 0mb to 4mb
        mov eax, 0xa0000
   mov ebx, 0x0
page_first4mb:
   mov ecx, ebx
   or ecx, 0x3
   mov dword [eax], ecx
   add eax, 0x4
   add ebx, 0x1000
   cmp eax, 0xa1000
   jne page_first4mb

; again somewhat later in the code
mov dword [0x9c004], 0xa0003       ; put address of table at the second entry

; again somewhat later in the code
        mov ebx, [infoheader]             ; put infostruct back
   push ebx                                ; push it on the stack
   
   call _main            ;call the 'real' kernel

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void _main (multiboot_info_t* mbi) {
   multiboot_info_t *new_mbi = (int) 0x400000 + (int) mbi; // create a new pointer to the multiboot info struct, but then the physical address
   unpage_0(); // not needed anymore, delete it
     
   video_init(); // init video
// just some debugging info
   printf("Old MBI: %i - 0x%x\n", mbi, mbi);
   printf("New MBI: %i - 0x%x\n", new_mbi, new_mbi);
   
   printf("Memory: %i\n", (int) new_mbi->mem_lower);
   printf("Memory: %i\n", (int) new_mbi->mem_upper);
   printf("Memory: %i\n", (int) new_mbi->mmap_addr);
   cli();
   hlt(); // because of debugging reasons, halt the kernel