51 lines
1.3 KiB
ArmAsm
51 lines
1.3 KiB
ArmAsm
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2013 Intel Corporation; author: Matt Fleming
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston MA 02110-1301, USA; either version 2 of the License, or
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* (at your option) any later version; incorporated herein by reference.
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*
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* ----------------------------------------------------------------------- */
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.globl kernel_jump
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.type kernel_jump,@function
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.text
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kernel_jump:
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cli
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movl 0x8(%esp), %esi
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movl 0x4(%esp), %ecx
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jmp *%ecx
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/*
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* The default handover function should only be invoked for
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* bzImage boot protocol versions < 2.12.
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*/
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.globl efi_handover
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.type efi_handover,@function
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efi_handover:
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cli
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popl %ecx /* discard return address */
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movl 0xc(%esp), %ecx
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jmp *%ecx
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.globl efi_handover_32
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.type efi_handover_32,@function
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efi_handover_32:
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cli
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popl %ecx /* discard return address */
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movl 0xc(%esp), %ecx
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call *%ecx
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.globl efi_handover_64
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.type efi_handover_64,@function
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efi_handover_64:
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call 1f
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1:
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popl %eax
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subl $1b, %eax
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movl $38, errno(%eax) /* ENOSYS */
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ret
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