diff options
Diffstat (limited to 'MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c')
| -rw-r--r-- | MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c | 240 |
1 files changed, 229 insertions, 11 deletions
diff --git a/MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c b/MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c index 57c6555408..adbd3fca81 100644 --- a/MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c +++ b/MdePkg/Library/BasePeCoffLib/Ipf/PeCoffLoaderEx.c @@ -88,17 +88,6 @@ PeCoffLoaderRelocateImageEx ( UINT64 FixupVal;
switch ((*Reloc) >> 12) {
-
- case EFI_IMAGE_REL_BASED_DIR64:
- F64 = (UINT64 *) Fixup;
- *F64 = *F64 + (UINT64) Adjust;
- if (*FixupData != NULL) {
- *FixupData = ALIGN_POINTER(*FixupData, sizeof(UINT64));
- *(UINT64 *)(*FixupData) = *F64;
- *FixupData = *FixupData + sizeof(UINT64);
- }
- break;
-
case EFI_IMAGE_REL_BASED_IA64_IMM64:
//
@@ -225,3 +214,232 @@ PeCoffLoaderRelocateImageEx ( return RETURN_SUCCESS;
}
+
+/**
+ 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 IA32, EBC,
+ & X64 images. Calling the entry point in a correct mannor is up to the
+ consumer of this library. This version also supports the special relocations
+ for Itanium.
+
+ @param Machine Machine type from the PE Header.
+
+ @return TRUE if this PE/COFF loader can load the image
+
+**/
+BOOLEAN
+PeCoffLoaderImageFormatSupported (
+ IN UINT16 Machine
+ )
+{
+ if ((Machine == EFI_IMAGE_MACHINE_IPF) || (Machine == EFI_IMAGE_MACHINE_IA32) ||
+ (Machine == EFI_IMAGE_MACHINE_EBC) || (Machine == EFI_IMAGE_MACHINE_X64)) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+/**
+ ImageRead function that operates on a memory buffer whos base is passed into
+ FileHandle.
+
+ @param Reloc Ponter to baes of the input stream
+ @param Fixup Offset to the start of the buffer
+ @param FixupData Number of bytes to copy into the buffer
+ @param Adjust Location to place results of read
+
+ @retval RETURN_SUCCESS Data is read from FileOffset from the Handle into
+ the buffer.
+**/
+RETURN_STATUS
+PeHotRelocateImageEx (
+ IN UINT16 *Reloc,
+ IN OUT CHAR8 *Fixup,
+ IN OUT CHAR8 **FixupData,
+ IN UINT64 Adjust
+ )
+/*++
+
+Routine Description:
+
+ Performs an IPF 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:
+
+ None
+
+--*/
+{
+ UINT64 *F64;
+ UINT64 FixupVal;
+
+ switch ((*Reloc) >> 12) {
+ case EFI_IMAGE_REL_BASED_DIR64:
+ F64 = (UINT64 *) Fixup;
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));
+ if (*(UINT64 *) (*FixupData) == *F64) {
+ *F64 = *F64 + (UINT64) Adjust;
+ }
+
+ *FixupData = *FixupData + sizeof (UINT64);
+ break;
+
+ case EFI_IMAGE_REL_BASED_IA64_IMM64:
+ F64 = (UINT64 *) Fixup;
+ *FixupData = ALIGN_POINTER (*FixupData, sizeof (UINT64));
+ if (*(UINT64 *) (*FixupData) == *F64) {
+ //
+ // Align it to bundle address before fixing up the
+ // 64-bit immediate value of the movl instruction.
+ //
+ //
+ Fixup = (CHAR8 *) ((UINT64) Fixup & (UINT64)~(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
+ );
+
+ *(UINT64 *) (*FixupData) = *F64;
+ }
+
+ *FixupData = *FixupData + sizeof (UINT64);
+ break;
+
+ default:
+ DEBUG ((EFI_D_ERROR, "PeHotRelocateEx:unknown fixed type\n"));
+ return RETURN_UNSUPPORTED;
+ }
+
+ return RETURN_SUCCESS;
+}
+
+
+
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