2 CPU Exception Handler Library common functions.
4 Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include "CpuExceptionCommon.h"
18 // Error code flag indicating whether or not an error code will be
19 // pushed on the stack if an exception occurs.
21 // 1 means an error code will be pushed, otherwise 0
23 CONST UINT32 mErrorCodeFlag
= 0x00027d00;
24 RESERVED_VECTORS_DATA
*mReservedVectors
= NULL
;
27 // Define the maximum message length
29 #define MAX_DEBUG_MESSAGE_LENGTH 0x100
32 Prints a message to the serial port.
34 @param Format Format string for the message to print.
35 @param ... Variable argument list whose contents are accessed
36 based on the format string specified by Format.
41 InternalPrintMessage (
42 IN CONST CHAR8
*Format
,
46 CHAR8 Buffer
[MAX_DEBUG_MESSAGE_LENGTH
];
50 // Convert the message to an ASCII String
52 VA_START (Marker
, Format
);
53 AsciiVSPrint (Buffer
, sizeof (Buffer
), Format
, Marker
);
57 // Send the print string to a Serial Port
59 SerialPortWrite ((UINT8
*)Buffer
, AsciiStrLen (Buffer
));
63 Find and display image base address and return image base and its entry point.
65 @param CurrentEip Current instruction pointer.
66 @param EntryPoint Return module entry point if module header is found.
68 @return !0 Image base address.
69 @return 0 Image header cannot be found.
78 EFI_IMAGE_DOS_HEADER
*DosHdr
;
79 EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr
;
85 Pe32Data
= CurrentEip
& ~(mImageAlignSize
- 1);
86 while (Pe32Data
!= 0) {
87 DosHdr
= (EFI_IMAGE_DOS_HEADER
*) Pe32Data
;
88 if (DosHdr
->e_magic
== EFI_IMAGE_DOS_SIGNATURE
) {
90 // DOS image header is present, so read the PE header after the DOS image header.
92 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)(Pe32Data
+ (UINTN
) ((DosHdr
->e_lfanew
) & 0x0ffff));
94 // Make sure PE header address does not overflow and is less than the initial address.
96 if (((UINTN
)Hdr
.Pe32
> Pe32Data
) && ((UINTN
)Hdr
.Pe32
< CurrentEip
)) {
97 if (Hdr
.Pe32
->Signature
== EFI_IMAGE_NT_SIGNATURE
) {
101 InternalPrintMessage ("!!!! Find PE image ");
102 *EntryPoint
= (UINTN
)Pe32Data
+ (UINTN
)(Hdr
.Pe32
->OptionalHeader
.AddressOfEntryPoint
& 0x0ffffffff);
108 // DOS image header is not present, TE header is at the image base.
110 Hdr
.Pe32
= (EFI_IMAGE_NT_HEADERS32
*)Pe32Data
;
111 if ((Hdr
.Te
->Signature
== EFI_TE_IMAGE_HEADER_SIGNATURE
) &&
112 ((Hdr
.Te
->Machine
== IMAGE_FILE_MACHINE_I386
) || Hdr
.Te
->Machine
== IMAGE_FILE_MACHINE_X64
)) {
114 // It's TE image, it TE header and Machine type match
116 InternalPrintMessage ("!!!! Find TE image ");
117 *EntryPoint
= (UINTN
)Pe32Data
+ (UINTN
)(Hdr
.Te
->AddressOfEntryPoint
& 0x0ffffffff) + sizeof(EFI_TE_IMAGE_HEADER
) - Hdr
.Te
->StrippedSize
;
123 // Not found the image base, check the previous aligned address
125 Pe32Data
-= mImageAlignSize
;
129 PdbPointer
= PeCoffLoaderGetPdbPointer ((VOID
*) Pe32Data
);
130 if (PdbPointer
!= NULL
) {
131 InternalPrintMessage ("%a", PdbPointer
);
133 InternalPrintMessage ("(No PDB) " );
136 InternalPrintMessage ("!!!! Can't find image information. !!!!\n");
143 Read and save reserved vector information
145 @param[in] VectorInfo Pointer to reserved vector list.
146 @param[out] ReservedVector Pointer to reserved vector data buffer.
147 @param[in] VectorCount Vector number to be updated.
149 @return EFI_SUCCESS Read and save vector info successfully.
150 @retval EFI_INVALID_PARAMETER VectorInfo includes the invalid content if VectorInfo is not NULL.
154 ReadAndVerifyVectorInfo (
155 IN EFI_VECTOR_HANDOFF_INFO
*VectorInfo
,
156 OUT RESERVED_VECTORS_DATA
*ReservedVector
,
160 while (VectorInfo
->Attribute
!= EFI_VECTOR_HANDOFF_LAST_ENTRY
) {
161 if (VectorInfo
->Attribute
> EFI_VECTOR_HANDOFF_HOOK_AFTER
) {
163 // If vector attrubute is invalid
165 return EFI_INVALID_PARAMETER
;
167 if (VectorInfo
->VectorNumber
< VectorCount
) {
168 ReservedVector
[VectorInfo
->VectorNumber
].Attribute
= VectorInfo
->Attribute
;