arch/x86/boot/compressed/efi_stub_64.S

   1 #include <asm/segment.h>
   2 #include <asm/msr.h>
   3 #include <asm/processor-flags.h>
   4
   5 #include "../../platform/efi/efi_stub_64.S"
   6
   7 #ifdef CONFIG_EFI_MIXED
   8         .code64
   9         .text
  10 ENTRY(efi64_thunk)
  11         push    %rbp
  12         push    %rbx
  13
  14         subq    $16, %rsp
  15         leaq    efi_exit32(%rip), %rax
  16         movl    %eax, 8(%rsp)
  17         leaq    efi_gdt64(%rip), %rax
  18         movl    %eax, 4(%rsp)
  19         movl    %eax, 2(%rax)           /* Fixup the gdt base address */
  20         leaq    efi32_boot_gdt(%rip), %rax
  21         movl    %eax, (%rsp)
  22
  23         call    __efi64_thunk
  24
  25         addq    $16, %rsp
  26         pop     %rbx
  27         pop     %rbp
  28         ret
  29 ENDPROC(efi64_thunk)
  30 #endif /* CONFIG_EFI_MIXED */