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https://github.com/acidanthera/audk.git
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fec7633848
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1847 6f19259b-4bc3-4df7-8a09-765794883524
517 lines
9.6 KiB
C
517 lines
9.6 KiB
C
/*++
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Copyright (c) 2004, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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CommonLib.c
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Abstract:
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Common Library Functions
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--*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "CommonLib.h"
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VOID
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PeiZeroMem (
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IN VOID *Buffer,
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IN UINTN Size
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)
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/*++
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Routine Description:
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Set Buffer to zero for Size bytes.
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Arguments:
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Buffer - Memory to set.
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Size - Number of bytes to set
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Returns:
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None
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--*/
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{
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INT8 *Ptr;
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Ptr = Buffer;
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while (Size--) {
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*(Ptr++) = 0;
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}
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}
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VOID
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PeiCopyMem (
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IN VOID *Destination,
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IN VOID *Source,
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IN UINTN Length
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)
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/*++
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Routine Description:
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Copy Length bytes from Source to Destination.
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Arguments:
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Destination - Target of copy
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Source - Place to copy from
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Length - Number of bytes to copy
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Returns:
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None
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--*/
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{
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CHAR8 *Destination8;
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CHAR8 *Source8;
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Destination8 = Destination;
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Source8 = Source;
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while (Length--) {
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*(Destination8++) = *(Source8++);
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}
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}
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VOID
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ZeroMem (
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IN VOID *Buffer,
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IN UINTN Size
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)
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{
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PeiZeroMem (Buffer, Size);
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}
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VOID
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CopyMem (
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IN VOID *Destination,
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IN VOID *Source,
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IN UINTN Length
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)
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{
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PeiCopyMem (Destination, Source, Length);
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}
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INTN
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CompareGuid (
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IN EFI_GUID *Guid1,
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IN EFI_GUID *Guid2
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)
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/*++
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Routine Description:
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Compares to GUIDs
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Arguments:
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Guid1 - guid to compare
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Guid2 - guid to compare
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Returns:
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= 0 if Guid1 == Guid2
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!= 0 if Guid1 != Guid2
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--*/
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{
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INT32 *g1;
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INT32 *g2;
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INT32 r;
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//
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// Compare 32 bits at a time
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//
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g1 = (INT32 *) Guid1;
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g2 = (INT32 *) Guid2;
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r = g1[0] - g2[0];
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r |= g1[1] - g2[1];
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r |= g1[2] - g2[2];
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r |= g1[3] - g2[3];
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return r;
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}
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EFI_STATUS
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GetFileImage (
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IN CHAR8 *InputFileName,
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OUT CHAR8 **InputFileImage,
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OUT UINT32 *BytesRead
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)
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/*++
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Routine Description:
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This function opens a file and reads it into a memory buffer. The function
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will allocate the memory buffer and returns the size of the buffer.
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Arguments:
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InputFileName The name of the file to read.
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InputFileImage A pointer to the memory buffer.
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BytesRead The size of the memory buffer.
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Returns:
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EFI_SUCCESS The function completed successfully.
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EFI_INVALID_PARAMETER One of the input parameters was invalid.
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EFI_ABORTED An error occurred.
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EFI_OUT_OF_RESOURCES No resource to complete operations.
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--*/
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{
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FILE *InputFile;
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UINT32 FileSize;
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//
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// Verify input parameters.
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//
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if (InputFileName == NULL || strlen (InputFileName) == 0 || InputFileImage == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Open the file and copy contents into a memory buffer.
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//
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//
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// Open the file
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//
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InputFile = fopen (InputFileName, "rb");
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if (InputFile == NULL) {
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printf ("ERROR: Could not open input file \"%s\".\n", InputFileName);
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return EFI_ABORTED;
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}
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//
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// Go to the end so that we can determine the file size
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//
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if (fseek (InputFile, 0, SEEK_END)) {
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printf ("ERROR: System error reading input file \"%s\".\n", InputFileName);
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fclose (InputFile);
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return EFI_ABORTED;
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}
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//
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// Get the file size
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//
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FileSize = ftell (InputFile);
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if (FileSize == -1) {
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printf ("ERROR: System error parsing input file \"%s\".\n", InputFileName);
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fclose (InputFile);
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return EFI_ABORTED;
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}
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//
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// Allocate a buffer
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//
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*InputFileImage = malloc (FileSize);
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if (*InputFileImage == NULL) {
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fclose (InputFile);
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return EFI_OUT_OF_RESOURCES;
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}
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//
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// Reset to the beginning of the file
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//
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if (fseek (InputFile, 0, SEEK_SET)) {
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printf ("ERROR: System error reading input file \"%s\".\n", InputFileName);
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fclose (InputFile);
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free (*InputFileImage);
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*InputFileImage = NULL;
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return EFI_ABORTED;
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}
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//
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// Read all of the file contents.
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//
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*BytesRead = fread (*InputFileImage, sizeof (UINT8), FileSize, InputFile);
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if (*BytesRead != sizeof (UINT8) * FileSize) {
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printf ("ERROR: Reading file \"%s\"%i.\n", InputFileName);
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fclose (InputFile);
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free (*InputFileImage);
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*InputFileImage = NULL;
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return EFI_ABORTED;
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}
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//
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// Close the file
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//
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fclose (InputFile);
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return EFI_SUCCESS;
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}
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UINT8
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CalculateChecksum8 (
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IN UINT8 *Buffer,
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IN UINTN Size
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)
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/*++
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Routine Description:
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This function calculates the value needed for a valid UINT8 checksum
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Arguments:
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Buffer Pointer to buffer containing byte data of component.
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Size Size of the buffer
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Returns:
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The 8 bit checksum value needed.
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--*/
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{
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return (UINT8) (0x100 - CalculateSum8 (Buffer, Size));
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}
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UINT8
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CalculateSum8 (
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IN UINT8 *Buffer,
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IN UINTN Size
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)
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/*++
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Routine Description::
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This function calculates the UINT8 sum for the requested region.
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Arguments:
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Buffer Pointer to buffer containing byte data of component.
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Size Size of the buffer
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Returns:
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The 8 bit checksum value needed.
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--*/
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{
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UINTN Index;
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UINT8 Sum;
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Sum = 0;
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//
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// Perform the byte sum for buffer
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//
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for (Index = 0; Index < Size; Index++) {
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Sum = (UINT8) (Sum + Buffer[Index]);
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}
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return Sum;
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}
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UINT16
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CalculateChecksum16 (
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IN UINT16 *Buffer,
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IN UINTN Size
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)
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/*++
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Routine Description::
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This function calculates the value needed for a valid UINT16 checksum
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Arguments:
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Buffer Pointer to buffer containing byte data of component.
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Size Size of the buffer
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Returns:
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The 16 bit checksum value needed.
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--*/
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{
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return (UINT16) (0x10000 - CalculateSum16 (Buffer, Size));
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}
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UINT16
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CalculateSum16 (
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IN UINT16 *Buffer,
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IN UINTN Size
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)
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/*++
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Routine Description:
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This function calculates the UINT16 sum for the requested region.
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Arguments:
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Buffer Pointer to buffer containing byte data of component.
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Size Size of the buffer
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Returns:
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The 16 bit checksum
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--*/
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{
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UINTN Index;
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UINT16 Sum;
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Sum = 0;
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//
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// Perform the word sum for buffer
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//
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for (Index = 0; Index < Size; Index++) {
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Sum = (UINT16) (Sum + Buffer[Index]);
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}
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return (UINT16) Sum;
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}
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EFI_STATUS
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PrintGuid (
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IN EFI_GUID *Guid
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)
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/*++
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Routine Description:
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This function prints a GUID to STDOUT.
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Arguments:
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Guid Pointer to a GUID to print.
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Returns:
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EFI_SUCCESS The GUID was printed.
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EFI_INVALID_PARAMETER The input was NULL.
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--*/
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{
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if (Guid == NULL) {
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printf ("ERROR: PrintGuid called with a NULL value.\n");
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return EFI_INVALID_PARAMETER;
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}
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printf (
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"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x\n",
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Guid->Data1,
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Guid->Data2,
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Guid->Data3,
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Guid->Data4[0],
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Guid->Data4[1],
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Guid->Data4[2],
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Guid->Data4[3],
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Guid->Data4[4],
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Guid->Data4[5],
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Guid->Data4[6],
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Guid->Data4[7]
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);
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return EFI_SUCCESS;
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}
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EFI_STATUS
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PrintGuidToBuffer (
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IN EFI_GUID *Guid,
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IN OUT UINT8 *Buffer,
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IN UINT32 BufferLen,
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IN BOOLEAN Uppercase
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)
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/*++
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Routine Description:
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This function prints a GUID to a buffer
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Arguments:
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Guid - Pointer to a GUID to print.
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Buffer - Pointer to a user-provided buffer to print to
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BufferLen - Size of the Buffer
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Uppercase - If use upper case.
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Returns:
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EFI_SUCCESS The GUID was printed.
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EFI_INVALID_PARAMETER The input was NULL.
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EFI_BUFFER_TOO_SMALL The input buffer was not big enough
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--*/
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{
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if (Guid == NULL) {
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printf ("ERROR: PrintGuidToBuffer() called with a NULL value\n");
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return EFI_INVALID_PARAMETER;
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}
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if (BufferLen < PRINTED_GUID_BUFFER_SIZE) {
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printf ("ERORR: PrintGuidToBuffer() called with invalid buffer size\n");
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return EFI_BUFFER_TOO_SMALL;
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}
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if (Uppercase) {
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sprintf (
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Buffer,
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"%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X",
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Guid->Data1,
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Guid->Data2,
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Guid->Data3,
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Guid->Data4[0],
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Guid->Data4[1],
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Guid->Data4[2],
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Guid->Data4[3],
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Guid->Data4[4],
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Guid->Data4[5],
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Guid->Data4[6],
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Guid->Data4[7]
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);
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} else {
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sprintf (
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Buffer,
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"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
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Guid->Data1,
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Guid->Data2,
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Guid->Data3,
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Guid->Data4[0],
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Guid->Data4[1],
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Guid->Data4[2],
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Guid->Data4[3],
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Guid->Data4[4],
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Guid->Data4[5],
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Guid->Data4[6],
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Guid->Data4[7]
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);
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}
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return EFI_SUCCESS;
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}
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#ifdef __GNUC__
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size_t _filelength(FILE *file)
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{
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struct stat stat_buf;
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fstat(fileno(file), &stat_buf);
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return stat_buf.st_size;
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}
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#ifndef __CYGWIN__
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char *strlwr(char *s)
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{
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char *p = s;
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for(;*s;s++) {
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*s = tolower(*s);
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}
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return p;
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}
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#endif
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#endif
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