4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IA-32/x64 AsmEnablePaging32()
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Enables the 32-bit paging mode on the CPU.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Enables the 32-bit paging mode on the CPU. CR0, CR3, CR4, and the page tables
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync must be properly initialized prior to calling this service. This function
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync assumes the current execution mode is 32-bit protected mode. This function is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync only available on IA-32. After the 32-bit paging mode is enabled, control is
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync transferred to the function specified by EntryPoint using the new stack
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync specified by NewStack and passing in the parameters specified by Context1 and
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Context2. Context1 and Context2 are optional and may be NULL. The function
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EntryPoint must never return.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If the current execution mode is not 32-bit protected mode, then ASSERT().
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If EntryPoint is NULL, then ASSERT().
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync If NewStack is NULL, then ASSERT().
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync There are a number of constraints that must be followed before calling this
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 1) Interrupts must be disabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 2) The caller must be in 32-bit protected mode with flat descriptors. This
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync means all descriptors must have a base of 0 and a limit of 4GB.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 3) CR0 and CR4 must be compatible with 32-bit protected mode with flat
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync descriptors.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 4) CR3 must point to valid page tables that will be used once the transition
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync is complete, and those page tables must guarantee that the pages for this
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync function and the stack are identity mapped.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param EntryPoint A pointer to function to call with the new stack after
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync paging is enabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Context1 A pointer to the context to pass into the EntryPoint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync function as the first parameter after paging is enabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param Context2 A pointer to the context to pass into the EntryPoint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync function as the second parameter after paging is enabled.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param NewStack A pointer to the new stack to use for the EntryPoint
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync function after paging is enabled.