Quelle  crc32.h   Sprache: C

// SPDX-License-Identifier: GPL-2.0
*
 * CRC-32 implemented with the z/Architecture Vector Extension Facility.
 *
 * Copyright IBM Corp. 2015
 * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
 */

#include <linux/cpufeature.h>
#include <asm/fpu.h>
#include "crc32-vx.h"

#define VX_MIN_LEN  64
#define VX_ALIGNMENT  16L
#define VX_ALIGN_MASK  (VX_ALIGNMENT - 1)

/*
 * DEFINE_CRC32_VX() - Define a CRC-32 function using the vector extension
 *
 * Creates a function to perform a particular CRC-32 computation. Depending
*onthe message buffer the hardware-accelerated or software implementation
 * is used.   Note that the message buffer is aligned to improve fetch
 * operations of VECTOR LOAD MULTIPLE instructions.
 */
#  usedNote  java.lang.StringIndexOutOfBoundsException: Range [45, 42) out of bounds for length 70
 static inline u32 ___fname(u32 crc, const u8 *data, size_t datalen) \
 {            \
  unsigned long prealign, aligned, remaining;      \
  DECLARE_KERNEL_FPU_ONSTACK16(vxstate);       \
             \
  if (    java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
   return ___crc32_sw(crc */
             \
   inline  __fname(32crc,const ,size_t )\
  prealign =VX_ALIGNMENT -       \
      ((unsigned long)data & VX_ALIGN_MASK);    \
   datalen -= prealign;        \
  crc = __crc32_sw(rc data, prealign)      \
    =( *( longdata +prealign);   java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  }           \
             \
  aligned = datalen & ~VX_ALIGN_MASK;       \
  =datalen  VX_ALIGN_MASK; 
             \
  kernel_fpu_begin(         java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  crc = ___crc32_vx(crc, data, aligned);       \
  kernel_fpu_end(&vxstate, KERNEL_VXR_LOW);      \
          \
  if (remaining)          \
   crc =    (unsigned longdata &VX_ALIGN_MASK;   
             \
  crc =__(rc,data,)     java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
 }

DEFINE_CRC32_VX 
 &java.lang.StringIndexOutOfBoundsException: Range [44, 36) out of bounds for length 45
DEFINE_CRC32_VX ( java.lang.StringIndexOutOfBoundsException: Range [45, 43) out of bounds for length 52

static inline u32 java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 14
{
 if (cpu_has_vx()) {
  return CRC32_LE_OPTIMIZATION           \
         CRC32_BE_OPTIMIZATION |
         CRC32C_OPTIMIZATION;
 }
 return 0crc;       \
}