[mirror_edk2.git] / MdePkg / Library / BasePeCoffGetEntryPointLib / PeCoffGetEntryPoint.c

/** @file\r
  Tiano PE/COFF loader.\r
\r
  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
  All rights reserved. This program and the accompanying materials\r
  are licensed and made available under the terms and conditions of the BSD License\r
  which accompanies this distribution.  The full text of the license may be found at\r
  http://opensource.org/licenses/bsd-license.php\r
\r
  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
\r
#include <Base.h>\r
\r
\r
#include <Library/PeCoffGetEntryPointLib.h>\r
#include <Library/DebugLib.h>\r
\r
#include <IndustryStandard/PeImage.h>\r
\r
/**\r
  Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded\r
  into system memory with the PE/COFF Loader Library functions.\r
\r
  Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry\r
  point in EntryPoint.  If the entry point could not be retrieved from the PE/COFF image, then\r
  return RETURN_INVALID_PARAMETER.  Otherwise return RETURN_SUCCESS.\r
  If Pe32Data is NULL, then ASSERT().\r
  If EntryPoint is NULL, then ASSERT().\r
\r
  @param  Pe32Data                  Pointer to the PE/COFF image that is loaded in system memory.\r
  @param  EntryPoint                Pointer to entry point to the PE/COFF image to return.\r
\r
  @retval RETURN_SUCCESS            EntryPoint was returned.\r
  @retval RETURN_INVALID_PARAMETER  The entry point could not be found in the PE/COFF image.\r
\r
**/\r
RETURN_STATUS\r
EFIAPI\r
PeCoffLoaderGetEntryPoint (\r
  IN  VOID  *Pe32Data,\r
  OUT VOID  **EntryPoint\r
  )\r
{\r
  EFI_IMAGE_DOS_HEADER                  *DosHeader;\r
  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION   Header;\r
\r
  ASSERT (Pe32Data   != NULL);\r
  ASSERT (EntryPoint != NULL);\r
\r
  DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
  if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
    //\r
    // DOS image header is present, so read the PE header after the DOS image header.\r
    //\r
    Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));\r
  } else {\r
    //\r
    // DOS image header is not present, so PE header is at the image base.\r
    //\r
    Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r
  }\r
\r
  //\r
  // Calculate the entry point relative to the start of the image.\r
  // AddressOfEntryPoint is common for PE32 & PE32+\r
  //\r
  *EntryPoint = (VOID *)((UINTN)Pe32Data + (UINTN)(Header.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));\r
  return RETURN_SUCCESS;\r
}\r
\r
\r
/**\r
  Returns the machine type of a PE/COFF image.\r
\r
  Returns the machine type from the PE/COFF image specified by Pe32Data.\r
  If Pe32Data is NULL, then ASSERT().\r
\r
  @param  Pe32Data   Pointer to the PE/COFF image that is loaded in system\r
                     memory.\r
\r
  @return Machine type or zero if not a valid iamge.\r
\r
**/\r
UINT16\r
EFIAPI\r
PeCoffLoaderGetMachineType (\r
  IN VOID  *Pe32Data\r
  )\r
{\r
  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION  Hdr;\r
  EFI_IMAGE_DOS_HEADER                 *DosHdr;\r
\r
  DosHdr = (EFI_IMAGE_DOS_HEADER  *)Pe32Data;\r
  if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + DosHdr->e_lfanew);\r
  } else {\r
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data);\r
  }\r
\r
  if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE)  {\r
    return Hdr.Pe32->FileHeader.Machine;\r
  }\r
\r
  return 0x0000;\r
}\r
\r
/**\r
  Returns a pointer to the PDB file name for a PE/COFF image that has been\r
  loaded into system memory with the PE/COFF Loader Library functions.\r
\r
  Returns the PDB file name for the PE/COFF image specified by Pe32Data.  If\r
  the PE/COFF image specified by Pe32Data is not a valid, then NULL is\r
  returned.  If the PE/COFF image specified by Pe32Data does not contain a\r
  debug directory entry, then NULL is returned.  If the debug directory entry\r
  in the PE/COFF image specified by Pe32Data does not contain a PDB file name,\r
  then NULL is returned.\r
  If Pe32Data is NULL, then ASSERT().\r
\r
  @param  Pe32Data   Pointer to the PE/COFF image that is loaded in system\r
                     memory.\r
\r
  @return The PDB file name for the PE/COFF image specified by Pe32Data or NULL\r
          if it cannot be retrieved.\r
\r
**/\r
VOID *\r
EFIAPI\r
PeCoffLoaderGetPdbPointer (\r
  IN VOID  *Pe32Data\r
  )\r
{\r
  EFI_IMAGE_DOS_HEADER                  *DosHeader;\r
  EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION   Hdr;\r
  EFI_IMAGE_DATA_DIRECTORY              *DirectoryEntry;\r
  EFI_IMAGE_DEBUG_DIRECTORY_ENTRY       *DebugEntry;\r
  UINTN                                 DirCount;\r
  VOID                                  *CodeViewEntryPointer;\r
  INTN                                  TEImageAdjust;\r
  UINT32                                NumberOfRvaAndSizes;\r
  UINT16                                Magic;\r
\r
  ASSERT (Pe32Data   != NULL);\r
\r
  TEImageAdjust       = 0;\r
  DirectoryEntry      = NULL;\r
  DebugEntry          = NULL;\r
  NumberOfRvaAndSizes = 0;\r
\r
  DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
  if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
    //\r
    // DOS image header is present, so read the PE header after the DOS image header.\r
    //\r
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));\r
  } else {\r
    //\r
    // DOS image header is not present, so PE header is at the image base.\r
    //\r
    Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r
  }\r
\r
  if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
    if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {\r
      DirectoryEntry  = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];\r
      TEImageAdjust   = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;\r
      DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +\r
                    Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +\r
                    TEImageAdjust);\r
    }\r
  } else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
    //\r
    // NOTE: We use Machine field to identify PE32/PE32+, instead of Magic.\r
    //       It is due to backward-compatibility, for some system might\r
    //       generate PE32+ image with PE32 Magic.\r
    //\r
    switch (Hdr.Pe32->FileHeader.Machine) {\r
    case EFI_IMAGE_MACHINE_IA32:\r
      //\r
      // Assume PE32 image with IA32 Machine field.\r
      //\r
      Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r
      break;\r
    case EFI_IMAGE_MACHINE_X64:\r
    case EFI_IMAGE_MACHINE_IPF:\r
      //\r
      // Assume PE32+ image with X64 or IPF Machine field\r
      //\r
      Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
      break;\r
    default:\r
      //\r
      // For unknow Machine field, use Magic in optional Header\r
      //\r
      Magic = Hdr.Pe32->OptionalHeader.Magic;\r
    }\r
\r
    if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
      //\r
      // Use PE32 offset get Debug Directory Entry\r
      //\r
      NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
      DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
      DebugEntry     = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
    } else if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {\r
      //\r
      // Use PE32+ offset get Debug Directory Entry\r
      //\r
      NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
      DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
      DebugEntry     = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
    }\r
\r
    if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r
      DirectoryEntry = NULL;\r
      DebugEntry = NULL;\r
    }\r
  } else {\r
    return NULL;\r
  }\r
\r
  if (DebugEntry == NULL || DirectoryEntry == NULL) {\r
    return NULL;\r
  }\r
\r
  for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount++, DebugEntry++) {\r
    if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r
      if (DebugEntry->SizeOfData > 0) {\r
        CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);\r
        switch (* (UINT32 *) CodeViewEntryPointer) {\r
        case CODEVIEW_SIGNATURE_NB10:\r
          return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));\r
        case CODEVIEW_SIGNATURE_RSDS:\r
          return (VOID *) ((CHAR8 *)CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));\r
        default:\r
          break;\r
        }\r
      }\r
    }\r
  }\r
\r
  return NULL;\r
}\r
\r
\r
Commit	Line	Data
e1f414b6	1	/** @file\r
	2	Tiano PE/COFF loader.\r
	3	\r
	4	Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
	5	All rights reserved. This program and the accompanying materials\r
	6	are licensed and made available under the terms and conditions of the BSD License\r
	7	which accompanies this distribution. The full text of the license may be found at\r
	8	http://opensource.org/licenses/bsd-license.php\r
	9	\r
	10	THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
	12	\r
e1f414b6	13	**/\r
e1f414b6	14	\r
c892d846	15	\r
c7d265a9	16	#include <Base.h>\r
c892d846	17	\r
c892d846	18	\r
c7d265a9	19	#include <Library/PeCoffGetEntryPointLib.h>\r
	20	#include <Library/DebugLib.h>\r
	21	\r
	22	#include <IndustryStandard/PeImage.h>\r
e1f414b6	23	\r
	24	/**\r
	25	Retrieves and returns a pointer to the entry point to a PE/COFF image that has been loaded\r
	26	into system memory with the PE/COFF Loader Library functions.\r
	27	\r
	28	Retrieves the entry point to the PE/COFF image specified by Pe32Data and returns this entry\r
	29	point in EntryPoint. If the entry point could not be retrieved from the PE/COFF image, then\r
	30	return RETURN_INVALID_PARAMETER. Otherwise return RETURN_SUCCESS.\r
	31	If Pe32Data is NULL, then ASSERT().\r
	32	If EntryPoint is NULL, then ASSERT().\r
	33	\r
	34	@param Pe32Data Pointer to the PE/COFF image that is loaded in system memory.\r
	35	@param EntryPoint Pointer to entry point to the PE/COFF image to return.\r
	36	\r
	37	@retval RETURN_SUCCESS EntryPoint was returned.\r
	38	@retval RETURN_INVALID_PARAMETER The entry point could not be found in the PE/COFF image.\r
	39	\r
	40	**/\r
	41	RETURN_STATUS\r
	42	EFIAPI\r
	43	PeCoffLoaderGetEntryPoint (\r
	44	IN VOID *Pe32Data,\r
	45	OUT VOID **EntryPoint\r
	46	)\r
	47	{\r
	48	EFI_IMAGE_DOS_HEADER *DosHeader;\r
	49	EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Header;\r
	50	\r
	51	ASSERT (Pe32Data != NULL);\r
	52	ASSERT (EntryPoint != NULL);\r
	53	\r
	54	DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
	55	if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
	56	//\r
	57	// DOS image header is present, so read the PE header after the DOS image header.\r
	58	//\r
	59	Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));\r
	60	} else {\r
	61	//\r
	62	// DOS image header is not present, so PE header is at the image base.\r
	63	//\r
	64	Header.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r
	65	}\r
	66	\r
	67	//\r
	68	// Calculate the entry point relative to the start of the image.\r
	69	// AddressOfEntryPoint is common for PE32 & PE32+\r
	70	//\r
	71	EntryPoint = (VOID )((UINTN)Pe32Data + (UINTN)(Header.Pe32->OptionalHeader.AddressOfEntryPoint & 0x0ffffffff));\r
	72	return RETURN_SUCCESS;\r
	73	}\r
	74	\r
	75	\r
	76	/**\r
	77	Returns the machine type of a PE/COFF image.\r
	78	\r
	79	Returns the machine type from the PE/COFF image specified by Pe32Data.\r
	80	If Pe32Data is NULL, then ASSERT().\r
	81	\r
	82	@param Pe32Data Pointer to the PE/COFF image that is loaded in system\r
	83	memory.\r
	84	\r
	85	@return Machine type or zero if not a valid iamge.\r
	86	\r
87	**/\r
88	UINT16\r
89	EFIAPI\r
90	PeCoffLoaderGetMachineType (\r
91	IN VOID *Pe32Data\r
92	)\r
93	{\r
94	EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
95	EFI_IMAGE_DOS_HEADER *DosHdr;\r
96	\r
97	DosHdr = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
98	if (DosHdr->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
99	Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data + DosHdr->e_lfanew);\r
100	} else {\r
101	Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN)Pe32Data);\r
102	}\r
103	\r
104	if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
105	return Hdr.Pe32->FileHeader.Machine;\r
106	}\r
107	\r
108	return 0x0000;\r
109	}\r
110	\r
111	/**\r
112	Returns a pointer to the PDB file name for a PE/COFF image that has been\r
113	loaded into system memory with the PE/COFF Loader Library functions.\r
114	\r
115	Returns the PDB file name for the PE/COFF image specified by Pe32Data. If\r
116	the PE/COFF image specified by Pe32Data is not a valid, then NULL is\r
117	returned. If the PE/COFF image specified by Pe32Data does not contain a\r
118	debug directory entry, then NULL is returned. If the debug directory entry\r
119	in the PE/COFF image specified by Pe32Data does not contain a PDB file name,\r
120	then NULL is returned.\r
121	If Pe32Data is NULL, then ASSERT().\r
122	\r
123	@param Pe32Data Pointer to the PE/COFF image that is loaded in system\r
124	memory.\r
125	\r
126	@return The PDB file name for the PE/COFF image specified by Pe32Data or NULL\r
127	if it cannot be retrieved.\r
128	\r
129	**/\r
130	VOID *\r
131	EFIAPI\r
132	PeCoffLoaderGetPdbPointer (\r
133	IN VOID *Pe32Data\r
134	)\r
135	{\r
136	EFI_IMAGE_DOS_HEADER *DosHeader;\r
137	EFI_IMAGE_OPTIONAL_HEADER_PTR_UNION Hdr;\r
138	EFI_IMAGE_DATA_DIRECTORY *DirectoryEntry;\r
139	EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *DebugEntry;\r
140	UINTN DirCount;\r
141	VOID *CodeViewEntryPointer;\r
142	INTN TEImageAdjust;\r
143	UINT32 NumberOfRvaAndSizes;\r
144	UINT16 Magic;\r
145	\r
146	ASSERT (Pe32Data != NULL);\r
147	\r
148	TEImageAdjust = 0;\r
149	DirectoryEntry = NULL;\r
150	DebugEntry = NULL;\r
151	NumberOfRvaAndSizes = 0;\r
152	\r
153	DosHeader = (EFI_IMAGE_DOS_HEADER *)Pe32Data;\r
154	if (DosHeader->e_magic == EFI_IMAGE_DOS_SIGNATURE) {\r
155	//\r
156	// DOS image header is present, so read the PE header after the DOS image header.\r
157	//\r
158	Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)((UINTN) Pe32Data + (UINTN) ((DosHeader->e_lfanew) & 0x0ffff));\r
159	} else {\r
160	//\r
161	// DOS image header is not present, so PE header is at the image base.\r
162	//\r
163	Hdr.Pe32 = (EFI_IMAGE_NT_HEADERS32 *)Pe32Data;\r
164	}\r
165	\r
166	if (Hdr.Te->Signature == EFI_TE_IMAGE_HEADER_SIGNATURE) {\r
167	if (Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress != 0) {\r
168	DirectoryEntry = &Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG];\r
169	TEImageAdjust = sizeof (EFI_TE_IMAGE_HEADER) - Hdr.Te->StrippedSize;\r
170	DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *)((UINTN) Hdr.Te +\r
171	Hdr.Te->DataDirectory[EFI_TE_IMAGE_DIRECTORY_ENTRY_DEBUG].VirtualAddress +\r
172	TEImageAdjust);\r
173	}\r
174	} else if (Hdr.Pe32->Signature == EFI_IMAGE_NT_SIGNATURE) {\r
175	//\r
176	// NOTE: We use Machine field to identify PE32/PE32+, instead of Magic.\r
177	// It is due to backward-compatibility, for some system might\r
178	// generate PE32+ image with PE32 Magic.\r
179	//\r
180	switch (Hdr.Pe32->FileHeader.Machine) {\r
181	case EFI_IMAGE_MACHINE_IA32:\r
182	//\r
183	// Assume PE32 image with IA32 Machine field.\r
184	//\r
185	Magic = EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC;\r
186	break;\r
187	case EFI_IMAGE_MACHINE_X64:\r
188	case EFI_IMAGE_MACHINE_IPF:\r
189	//\r
190	// Assume PE32+ image with X64 or IPF Machine field\r
191	//\r
192	Magic = EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC;\r
193	break;\r
194	default:\r
195	//\r
196	// For unknow Machine field, use Magic in optional Header\r
197	//\r
198	Magic = Hdr.Pe32->OptionalHeader.Magic;\r
199	}\r
200	\r
201	if (Magic == EFI_IMAGE_NT_OPTIONAL_HDR32_MAGIC) {\r
202	//\r
203	// Use PE32 offset get Debug Directory Entry\r
204	//\r
205	NumberOfRvaAndSizes = Hdr.Pe32->OptionalHeader.NumberOfRvaAndSizes;\r
206	DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
207	DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
208	} else if (Hdr.Pe32->OptionalHeader.Magic == EFI_IMAGE_NT_OPTIONAL_HDR64_MAGIC) {\r
209	//\r
210	// Use PE32+ offset get Debug Directory Entry\r
211	//\r
212	NumberOfRvaAndSizes = Hdr.Pe32Plus->OptionalHeader.NumberOfRvaAndSizes;\r
213	DirectoryEntry = (EFI_IMAGE_DATA_DIRECTORY *)&(Hdr.Pe32Plus->OptionalHeader.DataDirectory[EFI_IMAGE_DIRECTORY_ENTRY_DEBUG]);\r
214	DebugEntry = (EFI_IMAGE_DEBUG_DIRECTORY_ENTRY *) ((UINTN) Pe32Data + DirectoryEntry->VirtualAddress);\r
215	}\r
216	\r
217	if (NumberOfRvaAndSizes <= EFI_IMAGE_DIRECTORY_ENTRY_DEBUG) {\r
218	DirectoryEntry = NULL;\r
219	DebugEntry = NULL;\r
220	}\r
221	} else {\r
222	return NULL;\r
223	}\r
224	\r
225	if (DebugEntry == NULL \|\| DirectoryEntry == NULL) {\r
226	return NULL;\r
227	}\r
228	\r
229	for (DirCount = 0; DirCount < DirectoryEntry->Size; DirCount++, DebugEntry++) {\r
230	if (DebugEntry->Type == EFI_IMAGE_DEBUG_TYPE_CODEVIEW) {\r
231	if (DebugEntry->SizeOfData > 0) {\r
232	CodeViewEntryPointer = (VOID *) ((UINTN) DebugEntry->RVA + ((UINTN)Pe32Data) + (UINTN)TEImageAdjust);\r
233	switch (* (UINT32 *) CodeViewEntryPointer) {\r
234	case CODEVIEW_SIGNATURE_NB10:\r
235	return (VOID ) ((CHAR8 )CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_NB10_ENTRY));\r
236	case CODEVIEW_SIGNATURE_RSDS:\r
237	return (VOID ) ((CHAR8 )CodeViewEntryPointer + sizeof (EFI_IMAGE_DEBUG_CODEVIEW_RSDS_ENTRY));\r
238	default:\r
239	break;\r
240	}\r
241	}\r
242	}\r
243	}\r
244	\r
245	return NULL;\r
246	}\r
247	\r
248	\r