[ion] 73687: [BOOTLIB]: Begin adding support for transferring to newly loaded i386 image.
4 Feb
2017
4 Feb
'17
9:59 p.m.
Author: ion
Date: Sat Feb 4 21:59:52 2017
New Revision: 73687
URL: http://svn.reactos.org/svn/reactos?rev=73687&view=rev
Log:
[BOOTLIB]: Begin adding support for transferring to newly loaded i386 image.
Added:
trunk/reactos/boot/environ/lib/arch/i386/transfer.s (with props)
Modified:
trunk/reactos/boot/environ/CMakeLists.txt
trunk/reactos/boot/environ/include/bl.h
trunk/reactos/boot/environ/lib/misc/image.c
Modified: trunk/reactos/boot/environ/CMakeLists.txt
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/CMakeLists.tx…
==============================================================================
--- trunk/reactos/boot/environ/CMakeLists.txt [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/CMakeLists.txt [iso-8859-1] Sat Feb 4 21:59:52 2017
@@ -45,7 +45,7 @@
if(ARCH STREQUAL "i386")
list(APPEND BOOTLIB_ASM_SOURCE
- #lib/arch/i386/foo.asm
+ lib/arch/i386/transfer.s
)
list(APPEND BOOTLIB_SOURCE
lib/arch/i386/arch.c
Modified: trunk/reactos/boot/environ/include/bl.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/include/bl.h?…
==============================================================================
--- trunk/reactos/boot/environ/include/bl.h [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/include/bl.h [iso-8859-1] Sat Feb 4 21:59:52 2017
@@ -283,6 +283,7 @@
BlLoaderPageDirectory = 0xD0000006,
BlLoaderReferencePage = 0xD0000007,
BlLoaderRamDisk = 0xD0000008,
+ BlLoaderArchData = 0xD0000009,
BlLoaderData = 0xD000000A,
BlLoaderRegistry = 0xD000000B,
BlLoaderBlockMemory = 0xD000000C,
@@ -1180,6 +1181,13 @@
ULONG ImageSize;
} BL_IMAGE_APPLICATION_ENTRY, *PBL_IMAGE_APPLICATION_ENTRY;
+typedef struct _BL_IMAGE_PARAMETERS
+{
+ PVOID Buffer;
+ ULONG ActualSize;
+ ULONG BufferSize;
+} BL_IMAGE_PARAMETERS, *PBL_IMAGE_PARAMETERS;
+
typedef struct _BL_DEFERRED_FONT_FILE
{
LIST_ENTRY ListEntry;
@@ -1935,6 +1943,11 @@
VOID
BlpArchSwitchContext (
_In_ BL_ARCH_MODE NewMode
+ );
+
+VOID
+Archx86TransferTo32BitApplicationAsm (
+ VOID
);
/* MEMORY DESCRIPTOR ROUTINES ************************************************/
Added: trunk/reactos/boot/environ/lib/arch/i386/transfer.s
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/arch/i386…
==============================================================================
--- trunk/reactos/boot/environ/lib/arch/i386/transfer.s (added)
+++ trunk/reactos/boot/environ/lib/arch/i386/transfer.s [iso-8859-1] Sat Feb 4 21:59:52
2017
@@ -0,0 +1,81 @@
+/*
+ * COPYRIGHT: See COPYING.ARM in the top level directory
+ * PROJECT: ReactOS UEFI Boot Library
+ * FILE: boot/environ/lib/arch/transfer.asm
+ * PURPOSE: Boot Library i386 Transfer Functions
+ * PROGRAMMER: Alex Ionescu (alex.ionescu(a)reactos.org)
+ */
+
+/* INCLUDES ******************************************************************/
+
+#include <asm.inc>
+#include <ks386.inc>
+
+EXTERN _GdtRegister:DWORD
+EXTERN _IdtRegister:DWORD
+EXTERN _BootAppGdtRegister:DWORD
+EXTERN _BootAppIdtRegister:DWORD
+EXTERN _BootApp32Stack:DWORD
+EXTERN _BootApp32EntryRoutine:DWORD
+EXTERN _BootApp32Parameters:DWORD
+
+/* FUNCTIONS ****************************************************************/
+.code
+
+PUBLIC _Archx86TransferTo32BitApplicationAsm
+_Archx86TransferTo32BitApplicationAsm:
+
+ /* Save non-volatile registers */
+ push ebp
+ push esi
+ push edi
+ push ebx
+
+ /* Save data segments */
+ push es
+ push ds
+
+ /* Save the old stack */
+ mov ebx, esp
+
+ /* Save current GDT/IDT, then load new one */
+ sgdt fword ptr _GdtRegister
+ sidt fword ptr _IdtRegister
+ lgdt fword ptr _BootAppGdtRegister
+ lidt fword ptr _BootAppIdtRegister
+
+ /* Load the new stack */
+ xor ebp, ebp
+ mov esp, _BootApp32Stack
+
+ /* Push old stack onto new stack */
+ push ebx
+
+ /* Call the entry routine, passing the parameters */
+ mov eax, _BootApp32Parameters
+ push eax
+ mov eax, _BootApp32EntryRoutine
+ call eax
+
+ /* Retore old stack */
+ pop ebx
+ mov esp, ebx
+
+ /* Restore old GDT/IDT */
+ lgdt fword ptr _GdtRegister
+ lidt fword ptr _IdtRegister
+
+ /* Retore old segments */
+ pop ds
+ pop es
+
+ /* Retore non-volatiles */
+ pop ebx
+ pop edi
+ pop esi
+ pop ebp
+
+ /* All done */
+ retn
+
+END
Propchange: trunk/reactos/boot/environ/lib/arch/i386/transfer.s
------------------------------------------------------------------------------
svn:eol-style = native
Modified: trunk/reactos/boot/environ/lib/misc/image.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/boot/environ/lib/misc/imag…
==============================================================================
--- trunk/reactos/boot/environ/lib/misc/image.c [iso-8859-1] (original)
+++ trunk/reactos/boot/environ/lib/misc/image.c [iso-8859-1] Sat Feb 4 21:59:52 2017
@@ -16,6 +16,14 @@
ULONG IapAllocatedTableEntries;
ULONG IapTableEntries;
PVOID* IapImageTable;
+
+KDESCRIPTOR GdtRegister;
+KDESCRIPTOR IdtRegister;
+KDESCRIPTOR BootAppGdtRegister;
+KDESCRIPTOR BootAppIdtRegister;
+PVOID BootApp32EntryRoutine;
+PVOID BootApp32Parameters;
+PVOID BootApp32Stack;
/* FUNCTIONS *****************************************************************/
@@ -1597,6 +1605,17 @@
}
NTSTATUS
+ImgpInitializeBootApplicationParameters (
+ _In_ PBL_IMAGE_PARAMETERS ImageParameters,
+ _In_ PBL_APPLICATION_ENTRY AppEntry,
+ _In_ PVOID ImageBase,
+ _In_ ULONG ImageSize
+ )
+{
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
ImgArchEfiStartBootApplication (
_In_ PBL_APPLICATION_ENTRY AppEntry,
_In_ PVOID ImageBase,
@@ -1604,9 +1623,84 @@
_In_ PBL_RETURN_ARGUMENTS ReturnArguments
)
{
- /* Not yet implemented. This is the last step! */
- EfiPrintf(L"EFI APPLICATION START!!!\r\n");
- EfiStall(100000000);
+ KDESCRIPTOR Gdt, Idt;
+ ULONG BootSizeNeeded;
+ NTSTATUS Status;
+ PVOID BootData;
+ PIMAGE_NT_HEADERS NtHeaders;
+ PVOID NewStack, NewGdt, NewIdt;
+ BL_IMAGE_PARAMETERS Parameters;
+
+ /* Read the current IDT and GDT */
+ _sgdt(&Gdt.Limit);
+ __sidt(&Idt.Limit);
+
+ /* Allocate space for the IDT, GDT, and 24 pages of stack */
+ BootSizeNeeded = (ULONG)PAGE_ALIGN(Idt.Limit + Gdt.Limit + 1 + 25 * PAGE_SIZE);
+ Status = MmPapAllocatePagesInRange(&BootData,
+ BlLoaderArchData,
+ BootSizeNeeded >> PAGE_SHIFT,
+ 0,
+ 0,
+ NULL,
+ 0);
+ if (!NT_SUCCESS(Status))
+ {
+ goto Quickie;
+ }
+
+ RtlZeroMemory(BootData, BootSizeNeeded);
+
+ NewStack = (PVOID)((ULONG_PTR)BootData + (24 * PAGE_SIZE) - 8);
+ NewGdt = (PVOID)((ULONG_PTR)BootData + (24 * PAGE_SIZE));
+ NewIdt = (PVOID)((ULONG_PTR)BootData + (24 * PAGE_SIZE) + Gdt.Limit + 1);
+
+ RtlCopyMemory(NewGdt, (PVOID)Gdt.Base, Gdt.Limit + 1);
+ RtlCopyMemory(NewIdt, (PVOID)Idt.Base, Idt.Limit + 1);
+
+ RtlImageNtHeaderEx(0, ImageBase, ImageSize, &NtHeaders);
+
+ RtlZeroMemory(&Parameters, sizeof(Parameters));
+
+ Status = ImgpInitializeBootApplicationParameters(&Parameters,
+ AppEntry,
+ ImageBase,
+ ImageSize);
+ if (NT_SUCCESS(Status))
+ {
+ BootAppGdtRegister = Gdt;
+ BootAppIdtRegister = Idt;
+
+ BootApp32EntryRoutine = (PVOID)((ULONG_PTR)ImageBase +
+ NtHeaders->OptionalHeader.
+ AddressOfEntryPoint);
+ BootApp32Parameters = Parameters.Buffer;
+ BootApp32Stack = NewStack;
+
+#if BL_KD_SUPPORT
+ BlBdStop();
+#endif
+ /* Not yet implemented. This is the last step! */
+ EfiPrintf(L"EFI APPLICATION START!!!\r\n");
+ EfiStall(100000000);
+
+ /* Make it so */
+ Archx86TransferTo32BitApplicationAsm();
+
+ /* Not yet implemented. This is the last step! */
+ EfiPrintf(L"EFI APPLICATION RETURNED!!!\r\n");
+ EfiStall(100000000);
+#if BL_KD_SUPPORT
+ BlBdStart();
+#endif
+ }
+
+Quickie:
+ if (BootData)
+ {
+ //MmPapFreePages(bootData, TRUE);
+ }
+
return STATUS_NOT_IMPLEMENTED;
}
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