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290 lines
10 KiB
290 lines
10 KiB
/**
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Copyright (c) Microsoft Corporation. All rights reserved.
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Module Name:
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ldrreloc_rebase.c
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Abstract:
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Extract the LdrProcessRelocationBlock code from ldrreloc.c so rebase can use it
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w/o duplication of effort. This file is generated - don't edit by hand.
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Revision History:
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--*/
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#ifndef IMAGE_REL_BASED_SECTION
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#define IMAGE_REL_BASED_SECTION 6
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#endif
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#ifndef IMAGE_REL_BASED_REL32
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#define IMAGE_REL_BASED_REL32 7
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#endif
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#define RTL_PAGED_CODE() NOP_FUNCTION()
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#define LdrProcessRelocationBlockLongLong xxLdrProcessRelocationBlock64
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PIMAGE_BASE_RELOCATION
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LdrProcessRelocationBlockLongLong(
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IN ULONG_PTR VA,
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IN ULONG SizeOfBlock,
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IN PUSHORT NextOffset,
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IN LONGLONG Diff
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)
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{
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PUCHAR FixupVA;
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USHORT Offset;
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LONG Temp;
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#if defined(BLDR_KERNEL_RUNTIME)
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LONG TempOrig;
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LONG_PTR ActualDiff;
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#endif
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ULONG Temp32;
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ULONGLONG Value64;
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LONGLONG Temp64;
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RTL_PAGED_CODE();
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while (SizeOfBlock--) {
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Offset = *NextOffset & (USHORT)0xfff;
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FixupVA = (PUCHAR)(VA + Offset);
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//
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// Apply the fixups.
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//
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switch ((*NextOffset) >> 12) {
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case IMAGE_REL_BASED_HIGHLOW :
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//
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// HighLow - (32-bits) relocate the high and low half
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// of an address.
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//
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*(LONG UNALIGNED *)FixupVA += (ULONG) Diff;
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break;
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case IMAGE_REL_BASED_HIGH :
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//
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// High - (16-bits) relocate the high half of an address.
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//
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Temp = *(PUSHORT)FixupVA << 16;
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Temp += (ULONG) Diff;
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*(PUSHORT)FixupVA = (USHORT)(Temp >> 16);
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break;
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case IMAGE_REL_BASED_HIGHADJ :
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//
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// Adjust high - (16-bits) relocate the high half of an
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// address and adjust for sign extension of low half.
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//
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#if defined(NTOS_KERNEL_RUNTIME)
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//
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// If the address has already been relocated then don't
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// process it again now or information will be lost.
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//
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if (Offset & LDRP_RELOCATION_FINAL) {
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++NextOffset;
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--SizeOfBlock;
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break;
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}
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#endif
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Temp = *(PUSHORT)FixupVA << 16;
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#if defined(BLDR_KERNEL_RUNTIME)
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TempOrig = Temp;
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#endif
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++NextOffset;
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--SizeOfBlock;
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Temp += (LONG)(*(PSHORT)NextOffset);
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Temp += (ULONG) Diff;
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Temp += 0x8000;
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*(PUSHORT)FixupVA = (USHORT)(Temp >> 16);
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#if defined(BLDR_KERNEL_RUNTIME)
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ActualDiff = ((((ULONG_PTR)(Temp - TempOrig)) >> 16) -
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(((ULONG_PTR)Diff) >> 16 ));
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if (ActualDiff == 1) {
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//
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// Mark the relocation as needing an increment if it is
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// relocated again.
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//
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*(NextOffset - 1) |= LDRP_RELOCATION_INCREMENT;
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}
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else if (ActualDiff != 0) {
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//
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// Mark the relocation as cannot be reprocessed.
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//
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*(NextOffset - 1) |= LDRP_RELOCATION_FINAL;
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}
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#endif
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break;
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case IMAGE_REL_BASED_LOW :
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//
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// Low - (16-bit) relocate the low half of an address.
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//
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Temp = *(PSHORT)FixupVA;
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Temp += (ULONG) Diff;
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*(PUSHORT)FixupVA = (USHORT)Temp;
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break;
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case IMAGE_REL_BASED_IA64_IMM64:
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//
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// Align it to bundle address before fixing up the
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// 64-bit immediate value of the movl instruction.
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//
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FixupVA = (PUCHAR)((ULONG_PTR)FixupVA & ~(15));
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Value64 = (ULONGLONG)0;
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//
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// Extract the lower 32 bits of IMM64 from bundle
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//
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EXT_IMM64(Value64,
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(PULONG)FixupVA + EMARCH_ENC_I17_IMM7B_INST_WORD_X,
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EMARCH_ENC_I17_IMM7B_SIZE_X,
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EMARCH_ENC_I17_IMM7B_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM7B_VAL_POS_X);
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EXT_IMM64(Value64,
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(PULONG)FixupVA + EMARCH_ENC_I17_IMM9D_INST_WORD_X,
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EMARCH_ENC_I17_IMM9D_SIZE_X,
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EMARCH_ENC_I17_IMM9D_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM9D_VAL_POS_X);
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EXT_IMM64(Value64,
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(PULONG)FixupVA + EMARCH_ENC_I17_IMM5C_INST_WORD_X,
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EMARCH_ENC_I17_IMM5C_SIZE_X,
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EMARCH_ENC_I17_IMM5C_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM5C_VAL_POS_X);
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EXT_IMM64(Value64,
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(PULONG)FixupVA + EMARCH_ENC_I17_IC_INST_WORD_X,
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EMARCH_ENC_I17_IC_SIZE_X,
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EMARCH_ENC_I17_IC_INST_WORD_POS_X,
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EMARCH_ENC_I17_IC_VAL_POS_X);
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EXT_IMM64(Value64,
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(PULONG)FixupVA + EMARCH_ENC_I17_IMM41a_INST_WORD_X,
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EMARCH_ENC_I17_IMM41a_SIZE_X,
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EMARCH_ENC_I17_IMM41a_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41a_VAL_POS_X);
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EXT_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM41b_INST_WORD_X),
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EMARCH_ENC_I17_IMM41b_SIZE_X,
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EMARCH_ENC_I17_IMM41b_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41b_VAL_POS_X);
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EXT_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM41c_INST_WORD_X),
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EMARCH_ENC_I17_IMM41c_SIZE_X,
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EMARCH_ENC_I17_IMM41c_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41c_VAL_POS_X);
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EXT_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_SIGN_INST_WORD_X),
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EMARCH_ENC_I17_SIGN_SIZE_X,
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EMARCH_ENC_I17_SIGN_INST_WORD_POS_X,
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EMARCH_ENC_I17_SIGN_VAL_POS_X);
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//
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// Update 64-bit address
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//
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Value64+=Diff;
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//
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// Insert IMM64 into bundle
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//
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM7B_INST_WORD_X),
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EMARCH_ENC_I17_IMM7B_SIZE_X,
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EMARCH_ENC_I17_IMM7B_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM7B_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM9D_INST_WORD_X),
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EMARCH_ENC_I17_IMM9D_SIZE_X,
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EMARCH_ENC_I17_IMM9D_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM9D_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM5C_INST_WORD_X),
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EMARCH_ENC_I17_IMM5C_SIZE_X,
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EMARCH_ENC_I17_IMM5C_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM5C_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IC_INST_WORD_X),
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EMARCH_ENC_I17_IC_SIZE_X,
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EMARCH_ENC_I17_IC_INST_WORD_POS_X,
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EMARCH_ENC_I17_IC_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM41a_INST_WORD_X),
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EMARCH_ENC_I17_IMM41a_SIZE_X,
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EMARCH_ENC_I17_IMM41a_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41a_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM41b_INST_WORD_X),
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EMARCH_ENC_I17_IMM41b_SIZE_X,
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EMARCH_ENC_I17_IMM41b_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41b_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_IMM41c_INST_WORD_X),
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EMARCH_ENC_I17_IMM41c_SIZE_X,
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EMARCH_ENC_I17_IMM41c_INST_WORD_POS_X,
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EMARCH_ENC_I17_IMM41c_VAL_POS_X);
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INS_IMM64(Value64,
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((PULONG)FixupVA + EMARCH_ENC_I17_SIGN_INST_WORD_X),
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EMARCH_ENC_I17_SIGN_SIZE_X,
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EMARCH_ENC_I17_SIGN_INST_WORD_POS_X,
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EMARCH_ENC_I17_SIGN_VAL_POS_X);
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break;
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case IMAGE_REL_BASED_DIR64:
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*(ULONGLONG UNALIGNED *)FixupVA += Diff;
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break;
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case IMAGE_REL_BASED_MIPS_JMPADDR :
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//
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// JumpAddress - (32-bits) relocate a MIPS jump address.
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//
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Temp = (*(PULONG)FixupVA & 0x3ffffff) << 2;
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Temp += (ULONG) Diff;
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*(PULONG)FixupVA = (*(PULONG)FixupVA & ~0x3ffffff) |
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((Temp >> 2) & 0x3ffffff);
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break;
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case IMAGE_REL_BASED_ABSOLUTE :
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//
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// Absolute - no fixup required.
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//
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break;
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case IMAGE_REL_BASED_SECTION :
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//
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// Section Relative reloc. Ignore for now.
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//
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break;
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case IMAGE_REL_BASED_REL32 :
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//
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// Relative intrasection. Ignore for now.
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//
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break;
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default :
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//
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// Illegal - illegal relocation type.
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//
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return (PIMAGE_BASE_RELOCATION)NULL;
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}
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++NextOffset;
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}
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return (PIMAGE_BASE_RELOCATION)NextOffset;
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}
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