source: bootcd/isolinux/syslinux-6.03/efi/i386/linux.S @ 26ffad7

/* ----------------------------------------------------------------------- *
 *
 *   Copyright 2013 Intel Corporation; author: Matt Fleming
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 *   Boston MA 02110-1301, USA; either version 2 of the License, or
 *   (at your option) any later version; incorporated herein by reference.
 *
 * ----------------------------------------------------------------------- */

        .globl kernel_jump
        .type  kernel_jump,@function
        .text
kernel_jump:
        cli
        movl    0x8(%esp), %esi
        movl    0x4(%esp), %ecx
        jmp     *%ecx

        /*
         * The default handover function should only be invoked for
         * bzImage boot protocol versions < 2.12.
         */
        .globl efi_handover
        .type  efi_handover,@function
efi_handover:
        cli
        popl    %ecx            /* discard return address */
        movl    0xc(%esp), %ecx
        jmp     *%ecx

        .globl efi_handover_32
        .type  efi_handover_32,@function
efi_handover_32:
        cli
        popl    %ecx            /* discard return address */
        movl    0xc(%esp), %ecx
        call    *%ecx

        .globl efi_handover_64
        .type  efi_handover_64,@function
efi_handover_64:
        call    1f
1:
        popl    %eax
        subl    $1b, %eax
        movl    $38, errno(%eax)        /* ENOSYS */
        ret