Files
Mike Crowe 990e3e81e6 Use LF line endings in the repository
Convert the line endings stored for all text files in the repository to
LF. The majority previously used DOS-style CRLF line endings. Add a
.gitattributes file to enforce this and treat certain extensions as
never being text files.

Update PatchCheck.py to insist on LF line endings rather than CRLF.
However, its other checks fail on this commit due to lots of
pre-existing complaints that it only notices because the line endings
have changed.

Silicon/QemuSocPkg/FspBin/Patches/0001-Build-QEMU-FSP-2.0-binaries.patch
needs to be treated as binary since it contains a mixture of line
endings.

This change has implications depending on the client platform you are
using the repository from:

* Windows

The usual configuration for Git on Windows means that text files will
be checked out to the work tree with DOS-style CRLF line endings. If
that's not the case then you can configure Git to do so for the entire
machine with:

 git config --global core.autocrlf true

or for just the repository with:

 git config core.autocrlf true

Line endings will be normalised to LF when they are committed to the
repository. If you commit a text file with only LF line endings then it
will be converted to CRLF line endings in your work tree.

* Linux, MacOS and other Unices

The usual configuration for Git on such platforms is to check files out
of the repository with LF line endings. This is probably the right thing
for you. In the unlikely even that you are using Git on Unix but editing
or compiling on Windows for some reason then you may need to tweak your
configuration to force the use of CRLF line endings as described above.

* General

For more information see
https://docs.github.com/en/get-started/getting-started-with-git/configuring-git-to-handle-line-endings .

Fixes: https://github.com/slimbootloader/slimbootloader/issues/1400
Signed-off-by: Mike Crowe <mac@mcrowe.com>
2021-11-10 12:46:42 -08:00

118 lines
3.5 KiB
C

/** @file
Library used for sorting routines.
Copyright (c) 2009 - 2019, Intel Corporation. All rights reserved. <BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <PiPei.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/SortLib.h>
/**
Worker function for QuickSorting. This function is identical to PerformQuickSort,
except that is uses the pre-allocated buffer so the in place sorting does not need to
allocate and free buffers constantly.
Each element must be equal sized.
if BufferToSort is NULL, then ASSERT.
if CompareFunction is NULL, then ASSERT.
if Buffer is NULL, then ASSERT.
if Count is < 2 then perform no action.
if Size is < 1 then perform no action.
@param[in, out] BufferToSort on call a Buffer of (possibly sorted) elements
on return a buffer of sorted elements
@param[in] Count the number of elements in the buffer to sort
@param[in] ElementSize Size of an element in bytes
@param[in] CompareFunction The function to call to perform the comparison
of any 2 elements
@param[in] Buffer Buffer of size ElementSize for use in swapping
**/
VOID
EFIAPI
PerformQuickSort (
IN OUT VOID *BufferToSort,
IN CONST UINTN Count,
IN CONST UINTN ElementSize,
IN SORT_COMPARE CompareFunction,
IN VOID *Buffer
)
{
VOID *Pivot;
UINTN LoopCount;
UINTN NextSwapLocation;
ASSERT ((BufferToSort != NULL) && (CompareFunction != NULL) && (Buffer != NULL));
if ((Count < 2) || (ElementSize < 1)) {
return;
}
NextSwapLocation = 0;
//
// pick a pivot (we choose last element)
//
Pivot = ((UINT8 *)BufferToSort + ((Count - 1) * ElementSize));
//
// Now get the pivot such that all on "left" are below it
// and everything "right" are above it
//
for ( LoopCount = 0; LoopCount < Count - 1; LoopCount++) {
//
// if the element is less than the pivot
//
if (CompareFunction ((VOID *)((UINT8 *)BufferToSort + ((LoopCount)*ElementSize)), Pivot) <= 0) {
//
// swap
//
CopyMem (Buffer, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), (UINT8 *)BufferToSort + ((LoopCount)*ElementSize),
ElementSize);
CopyMem ((UINT8 *)BufferToSort + ((LoopCount)*ElementSize), Buffer, ElementSize);
//
// increment NextSwapLocation
//
NextSwapLocation++;
}
}
//
// swap pivot to it's final position (NextSwapLocaiton)
//
CopyMem (Buffer, Pivot, ElementSize);
CopyMem (Pivot, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), Buffer, ElementSize);
//
// Now recurse on 2 paritial lists. neither of these will have the 'pivot' element
// IE list is sorted left half, pivot element, sorted right half...
//
if (NextSwapLocation >= 2) {
PerformQuickSort (
BufferToSort,
NextSwapLocation,
ElementSize,
CompareFunction,
Buffer);
}
if ((Count - NextSwapLocation - 1) >= 2) {
PerformQuickSort (
(UINT8 *)BufferToSort + (NextSwapLocation + 1) * ElementSize,
Count - NextSwapLocation - 1,
ElementSize,
CompareFunction,
Buffer);
}
return;
}