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https://github.com/acidanthera/OpenCorePkg.git
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9ede6067c8
This quirk is needed to boot macOS 10.6 (and probably older) with 32-bit kernel in 32-bit OVMF. Similar to 64-bit mode, hibernation wake is not compatible with this quirk. This change also partially fixes compatibility with a few other quirks (e.g. AvoidRuntimeDefrag), but they are not really tested.
42 lines
1.3 KiB
NASM
42 lines
1.3 KiB
NASM
;------------------------------------------------------------------------------
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; @file
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; Copyright (C) 2024, vit9696. All rights reserved.
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;
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; All rights reserved.
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;
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; This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;------------------------------------------------------------------------------
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BITS 32
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DEFAULT REL
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SECTION .text
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extern ASM_PFX(AppleMapPrepareKernelState32)
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align 8
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global ASM_PFX(AsmAppleMapPrepareKernelState32)
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ASM_PFX(AsmAppleMapPrepareKernelState32):
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; Pass kernel arguments as an argument.
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; EDK II does not seem to align stack by more than 4 bytes.
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push eax
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; Call our C wrapper.
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call ASM_PFX(AppleMapPrepareKernelState32)
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; Restore stack pointer for ret function.
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; We might have updated eax via return for relocation block.
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add esp, 4
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; Execute overwritten instructions by a jump to our asm handler.
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mov bx, ds
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mov es, ebx
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; Return to kernel.
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ret
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