/** @file\r
+IA32, X64 and IPF Specific relocation fixups\r
\r
-Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2004 - 2014, Intel Corporation. All rights reserved.<BR>\r
+Portions Copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>\r
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
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
-Module Name:\r
-\r
- PeCoffLoaderEx.c\r
-\r
-Abstract:\r
-\r
- IA32, X64 and IPF Specific relocation fixups\r
-\r
-Revision History\r
-\r
--*/\r
\r
#include <Common/UefiBaseTypes.h>\r
#include <IndustryStandard/PeImage.h>\r
#include "PeCoffLib.h"\r
+#include "CommonLib.h"\r
+#include "EfiUtilityMsgs.h"\r
+\r
\r
#define EXT_IMM64(Value, Address, Size, InstPos, ValPos) \\r
Value |= (((UINT64)((*(Address) >> InstPos) & (((UINT64)1 << Size) - 1))) << ValPos)\r
\r
switch ((*Reloc) >> 12) {\r
\r
- case EFI_IMAGE_REL_BASED_DIR64:\r
- F64 = (UINT64 *) Fixup;\r
- *F64 = *F64 + (UINT64) Adjust;\r
- if (*FixupData != NULL) {\r
- *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));\r
- *(UINT64 *)(*FixupData) = *F64;\r
- *FixupData = *FixupData + sizeof(UINT64);\r
- }\r
- break;\r
-\r
case EFI_IMAGE_REL_BASED_IA64_IMM64:\r
\r
//\r
return RETURN_SUCCESS;\r
}\r
\r
-RETURN_STATUS\r
-PeCoffLoaderRelocateX64Image (\r
- IN UINT16 *Reloc,\r
- IN OUT CHAR8 *Fixup, \r
- IN OUT CHAR8 **FixupData,\r
- IN UINT64 Adjust\r
- )\r
-/**\r
- Performs an x64 specific relocation fixup\r
-\r
- @param Reloc Pointer to the relocation record\r
- @param Fixup Pointer to the address to fix up\r
- @param FixupData Pointer to a buffer to log the fixups\r
- @param Adjust The offset to adjust the fixup\r
- \r
- @retval RETURN_SUCCESS Success to perform relocation\r
- @retval RETURN_UNSUPPORTED Unsupported.\r
-**/\r
-{\r
- UINT64 *F64;\r
-\r
- switch ((*Reloc) >> 12) {\r
-\r
- case EFI_IMAGE_REL_BASED_DIR64:\r
- F64 = (UINT64 *) Fixup;\r
- *F64 = *F64 + (UINT64) Adjust;\r
- if (*FixupData != NULL) {\r
- *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));\r
- *(UINT64 *)(*FixupData) = *F64;\r
- *FixupData = *FixupData + sizeof(UINT64);\r
- }\r
- break;\r
-\r
- default:\r
- return RETURN_UNSUPPORTED;\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
/**\r
Pass in a pointer to an ARM MOVT or MOVW immediate instruciton and \r
return the immediate data encoded in the instruction\r
*Instruction = (*Instruction & ~0x70ff) | Patch;\r
}\r
\r
+/**\r
+ Pass in a pointer to an ARM MOVW/MOVT instruciton pair and \r
+ return the immediate data encoded in the two` instruction\r
+\r
+ @param Instructions Pointer to ARM MOVW/MOVT insturction pair\r
+\r
+ @return Immediate address encoded in the instructions\r
+\r
+**/\r
+UINT32\r
+EFIAPI\r
+ThumbMovwMovtImmediateAddress (\r
+ IN UINT16 *Instructions\r
+ )\r
+{\r
+ UINT16 *Word;\r
+ UINT16 *Top;\r
+ \r
+ Word = Instructions; // MOVW\r
+ Top = Word + 2; // MOVT\r
+ \r
+ return (ThumbMovtImmediateAddress (Top) << 16) + ThumbMovtImmediateAddress (Word);\r
+}\r
+\r
+\r
+/**\r
+ Update an ARM MOVW/MOVT immediate instruction instruction pair.\r
+\r
+ @param Instructions Pointer to ARM MOVW/MOVT instruction pair\r
+ @param Address New addres to patch into the instructions\r
+**/\r
+VOID\r
+EFIAPI\r
+ThumbMovwMovtImmediatePatch (\r
+ IN OUT UINT16 *Instructions,\r
+ IN UINT32 Address\r
+ )\r
+{\r
+ UINT16 *Word;\r
+ UINT16 *Top;\r
+ \r
+ Word = (UINT16 *)Instructions; // MOVW\r
+ Top = Word + 2; // MOVT\r
+\r
+ ThumbMovtImmediatePatch (Word, (UINT16)(Address & 0xffff));\r
+ ThumbMovtImmediatePatch (Top, (UINT16)(Address >> 16));\r
+}\r
+\r
+\r
/**\r
Performs an ARM-based specific relocation fixup and is a no-op on other\r
instruction sets.\r
)\r
{\r
UINT16 *Fixup16;\r
- UINT16 FixupVal;\r
- UINT16 *Addend;\r
+ UINT32 FixupVal;\r
\r
- Fixup16 = (UINT16 *) Fixup;\r
+ Fixup16 = (UINT16 *) Fixup;\r
\r
switch ((**Reloc) >> 12) {\r
- case EFI_IMAGE_REL_BASED_ARM_THUMB_MOVW:\r
- FixupVal = ThumbMovtImmediateAddress (Fixup16) + (UINT16)Adjust;\r
- ThumbMovtImmediatePatch (Fixup16, FixupVal);\r
-\r
- if (*FixupData != NULL) {\r
- *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT16));\r
- *(UINT16 *)*FixupData = *Fixup16;\r
- *FixupData = *FixupData + sizeof (UINT16);\r
- }\r
- break;\r
-\r
- case EFI_IMAGE_REL_BASED_ARM_THUMB_MOVT:\r
- // For MOVT you need to know the lower 16-bits do do the math\r
- // So this relocation entry is really two entries.\r
- *Reloc = *Reloc + 1;\r
- Addend = *Reloc; \r
- FixupVal = (UINT16)(((ThumbMovtImmediateAddress (Fixup16) << 16) + Adjust + *Addend) >> 16);\r
- ThumbMovtImmediatePatch (Fixup16, FixupVal);\r
-\r
+ \r
+ case EFI_IMAGE_REL_BASED_ARM_MOV32T:\r
+ FixupVal = ThumbMovwMovtImmediateAddress (Fixup16) + (UINT32)Adjust;\r
+ ThumbMovwMovtImmediatePatch (Fixup16, FixupVal);\r
+ \r
+ \r
if (*FixupData != NULL) {\r
- *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT16));\r
- *(UINT16 *)*FixupData = *Fixup16;\r
- *FixupData = *FixupData + sizeof (UINT16);\r
+ *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));\r
+ CopyMem (*FixupData, Fixup16, sizeof (UINT64));\r
+ *FixupData = *FixupData + sizeof(UINT64);\r
}\r
break;\r
\r
+ case EFI_IMAGE_REL_BASED_ARM_MOV32A:\r
+ // break omitted - ARM instruction encoding not implemented\r
default:\r
return RETURN_UNSUPPORTED;\r
}\r
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