/*++ Copyright (c) 2004 - 2006, Intel Corporation All rights reserved. This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. Module Name: PeCoffLoaderEx.c Abstract: Fixes Intel Itanium(TM) specific relocation types Revision History --*/ #include "TianoCommon.h" #include "EfiImage.h" #define EXT_IMM64(Value, Address, Size, InstPos, ValPos) \ Value |= (((UINT64)((*(Address) >> InstPos) & (((UINT64)1 << Size) - 1))) << ValPos) #define INS_IMM64(Value, Address, Size, InstPos, ValPos) \ *(UINT32*)Address = (*(UINT32*)Address & ~(((1 << Size) - 1) << InstPos)) | \ ((UINT32)((((UINT64)Value >> ValPos) & (((UINT64)1 << Size) - 1))) << InstPos) #define IMM64_IMM7B_INST_WORD_X 3 #define IMM64_IMM7B_SIZE_X 7 #define IMM64_IMM7B_INST_WORD_POS_X 4 #define IMM64_IMM7B_VAL_POS_X 0 #define IMM64_IMM9D_INST_WORD_X 3 #define IMM64_IMM9D_SIZE_X 9 #define IMM64_IMM9D_INST_WORD_POS_X 18 #define IMM64_IMM9D_VAL_POS_X 7 #define IMM64_IMM5C_INST_WORD_X 3 #define IMM64_IMM5C_SIZE_X 5 #define IMM64_IMM5C_INST_WORD_POS_X 13 #define IMM64_IMM5C_VAL_POS_X 16 #define IMM64_IC_INST_WORD_X 3 #define IMM64_IC_SIZE_X 1 #define IMM64_IC_INST_WORD_POS_X 12 #define IMM64_IC_VAL_POS_X 21 #define IMM64_IMM41a_INST_WORD_X 1 #define IMM64_IMM41a_SIZE_X 10 #define IMM64_IMM41a_INST_WORD_POS_X 14 #define IMM64_IMM41a_VAL_POS_X 22 #define IMM64_IMM41b_INST_WORD_X 1 #define IMM64_IMM41b_SIZE_X 8 #define IMM64_IMM41b_INST_WORD_POS_X 24 #define IMM64_IMM41b_VAL_POS_X 32 #define IMM64_IMM41c_INST_WORD_X 2 #define IMM64_IMM41c_SIZE_X 23 #define IMM64_IMM41c_INST_WORD_POS_X 0 #define IMM64_IMM41c_VAL_POS_X 40 #define IMM64_SIGN_INST_WORD_X 3 #define IMM64_SIGN_SIZE_X 1 #define IMM64_SIGN_INST_WORD_POS_X 27 #define IMM64_SIGN_VAL_POS_X 63 EFI_STATUS PeCoffLoaderRelocateImageEx ( IN UINT16 *Reloc, IN OUT CHAR8 *Fixup, IN OUT CHAR8 **FixupData, IN UINT64 Adjust ) /*++ Routine Description: Performs an Itanium-based specific relocation fixup Arguments: Reloc - Pointer to the relocation record Fixup - Pointer to the address to fix up FixupData - Pointer to a buffer to log the fixups Adjust - The offset to adjust the fixup Returns: Status code --*/ { UINT64 *F64; UINT64 FixupVal; switch ((*Reloc) >> 12) { case EFI_IMAGE_REL_BASED_IA64_IMM64: // // Align it to bundle address before fixing up the // 64-bit immediate value of the movl instruction. // Fixup = (CHAR8 *)((UINTN) Fixup & (UINTN) ~(15)); FixupVal = (UINT64)0; // // Extract the lower 32 bits of IMM64 from bundle // EXT_IMM64(FixupVal, (UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X, IMM64_IMM7B_SIZE_X, IMM64_IMM7B_INST_WORD_POS_X, IMM64_IMM7B_VAL_POS_X ); EXT_IMM64(FixupVal, (UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X, IMM64_IMM9D_SIZE_X, IMM64_IMM9D_INST_WORD_POS_X, IMM64_IMM9D_VAL_POS_X ); EXT_IMM64(FixupVal, (UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X, IMM64_IMM5C_SIZE_X, IMM64_IMM5C_INST_WORD_POS_X, IMM64_IMM5C_VAL_POS_X ); EXT_IMM64(FixupVal, (UINT32 *)Fixup + IMM64_IC_INST_WORD_X, IMM64_IC_SIZE_X, IMM64_IC_INST_WORD_POS_X, IMM64_IC_VAL_POS_X ); EXT_IMM64(FixupVal, (UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X, IMM64_IMM41a_SIZE_X, IMM64_IMM41a_INST_WORD_POS_X, IMM64_IMM41a_VAL_POS_X ); // // Update 64-bit address // FixupVal += Adjust; // // Insert IMM64 into bundle // INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM7B_INST_WORD_X), IMM64_IMM7B_SIZE_X, IMM64_IMM7B_INST_WORD_POS_X, IMM64_IMM7B_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM9D_INST_WORD_X), IMM64_IMM9D_SIZE_X, IMM64_IMM9D_INST_WORD_POS_X, IMM64_IMM9D_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM5C_INST_WORD_X), IMM64_IMM5C_SIZE_X, IMM64_IMM5C_INST_WORD_POS_X, IMM64_IMM5C_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IC_INST_WORD_X), IMM64_IC_SIZE_X, IMM64_IC_INST_WORD_POS_X, IMM64_IC_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM41a_INST_WORD_X), IMM64_IMM41a_SIZE_X, IMM64_IMM41a_INST_WORD_POS_X, IMM64_IMM41a_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM41b_INST_WORD_X), IMM64_IMM41b_SIZE_X, IMM64_IMM41b_INST_WORD_POS_X, IMM64_IMM41b_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_IMM41c_INST_WORD_X), IMM64_IMM41c_SIZE_X, IMM64_IMM41c_INST_WORD_POS_X, IMM64_IMM41c_VAL_POS_X ); INS_IMM64(FixupVal, ((UINT32 *)Fixup + IMM64_SIGN_INST_WORD_X), IMM64_SIGN_SIZE_X, IMM64_SIGN_INST_WORD_POS_X, IMM64_SIGN_VAL_POS_X ); F64 = (UINT64 *) Fixup; if (*FixupData != NULL) { *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64)); *(UINT64 *)(*FixupData) = *F64; *FixupData = *FixupData + sizeof(UINT64); } break; default: return EFI_UNSUPPORTED; } return EFI_SUCCESS; } BOOLEAN PeCoffLoaderImageFormatSupported ( IN UINT16 Machine ) /*++ Routine Description: Returns TRUE if the machine type of PE/COFF image is supported. Supported does not mean the image can be executed it means the PE/COFF loader supports loading and relocating of the image type. It's up to the caller to support the entry point. This function implies the basic PE/COFF loader/relocator supports IPF, EBC, images. Calling the entry point in a correct mannor is up to the consumer of this library. Arguments: Machine - Machine type from the PE Header. Returns: TRUE - if this PE/COFF loader can load the image FALSE - if this PE/COFF loader cannot load the image --*/ { if ((Machine == EFI_IMAGE_MACHINE_IA64) || (Machine == EFI_IMAGE_MACHINE_EBC)) { return TRUE; } return FALSE; }