CeDOS - link.txt

link.txt (view raw)

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OUTPUT_ARCH(i386)
OUTPUT_FORMAT(elf32-i386)

PAGE_SIZE = 1 << 12;

MEMORY
{
  BOOT_VMA :   ORIGIN = 0x00007C00, LENGTH = 0x00001000
  KERNEL_VMA :        ORIGIN = 0xC0000000, LENGTH = 0x30000000
  APPLICATION_VMA :   ORIGIN = 0x10000000, LENGTH = 0xB0000000
}

SECTIONS
{
  BOOT : AT(0x0000)
  {
    */boot.o(.*)
  } >BOOT_VMA

  KERNEL : AT(0x1000)
  {
    */kernel.o(.*)
    */kernel.o(.bss)
  } >KERNEL_VMA

  APPLICATION : AT(LOADADDR(KERNEL) + SIZEOF(KERNEL))
  {
    */apps.o(.*)
  } >APPLICATION_VMA

  ELF : AT(0x6000)
  {
    */apps_raw.o(.*)
  } >APPLICATION_VMA

  .bss : AT(LOADADDR(ELF) + SIZEOF(ELF))
  {

  } >KERNEL_VMA
}

__SS_LMA = LOADADDR(BOOT);
__SS_VMA = ADDR(BOOT);
__SS_SIZE = SIZEOF(BOOT);

__KERNEL_LMA = LOADADDR(KERNEL);
__KERNEL_VMA = ADDR(KERNEL);
__KERNEL_SIZE = SIZEOF(KERNEL);



__APP_LMA = LOADADDR(APPLICATION);
__APP_VMA = ADDR(APPLICATION);
__APP_SIZE = SIZEOF(APPLICATION);

__ELF_LMA = LOADADDR(ELF);
__ELF_VMA = ADDR(ELF);
__ELF_SIZE = SIZEOF(ELF);

__KERNEL_STACK_ADDR = 0xC0400000;

ASSERT(__SS_SIZE + __KERNEL_SIZE + __APP_SIZE + __ELF_SIZE <= 0x48 * 0x200, "bootloader payload too big!");