reactos/ntoskrnl/ke/i386/main.S

   1 #include <roscfg.h>
   2 #include <ndk/asm.h>
   3 #include <ndk/i386/segment.h>
   4
   5 #define AP_MAGIC (0x12481020)
   6
   7 .globl _NtProcessStartup
   8
   9 _NtProcessStartup:
  10
  11     /* FIXME: Application processors should have their own GDT/IDT */
  12     lgdt _KiGdtDescriptor
  13     lidt _KiIdtDescriptor
  14
  15     /* Load the PCR selector */
  16     movl $PCR_SELECTOR, %eax
  17     movl %eax, %fs
  18
  19     cmpl $AP_MAGIC, %ecx
  20     jne  .m1
  21
  22     pushl $0
  23     popfl
  24
  25     /*
  26      *  Reserve space for the floating point save area.
  27      */
  28     subl  $SIZEOF_FX_SAVE_AREA, %esp
  29
  30     /*
  31      * Call the application processor initialization code
  32      */
  33     pushl $0
  34     call  _KiSystemStartup
  35
  36 .m1:
  37     /* Load the initial kernel stack */
  38     lea _kernel_stack, %eax
  39     add $0x1000, %eax
  40     and $0xFFFFE000, %eax
  41     add $(0x3000 - SIZEOF_FX_SAVE_AREA), %eax
  42     movl %eax, %esp
  43
  44     /* Call the main kernel initialization */
  45     pushl %edx
  46     pushl %ecx
  47     call __main