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Linux/arch/arm/include/asm/neon.h

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Diff markup

Differences between /arch/arm/include/asm/neon.h (Architecture alpha) and /arch/sparc64/include/asm-sparc64/neon.h (Architecture sparc64)

  1 /* SPDX-License-Identifier: GPL-2.0-only */         1 
  2 /*                                                
  3  * linux/arch/arm/include/asm/neon.h              
  4  *                                                
  5  * Copyright (C) 2013 Linaro Ltd <ard.biesheuv    
  6  */                                               
  7                                                   
  8 #include <asm/hwcap.h>                            
  9                                                   
 10 #define cpu_has_neon()          (!!(elf_hwcap     
 11                                                   
 12 #ifdef __ARM_NEON__                               
 13                                                   
 14 /*                                                
 15  * If you are affected by the BUILD_BUG below,    
 16  * using NEON code /and/ calling the kernel_ne    
 17  * compilation unit. To prevent issues that ma    
 18  * generating(1) NEON instructions outside of     
 19  * only supported way of using NEON code in th    
 20  * separate compilation unit, and calling it f    
 21  * kernel_neon_begin/kernel_neon_end pair.        
 22  *                                                
 23  * (1) Current GCC (4.7) might generate NEON i    
 24  *     -mpfu=neon is set.                         
 25  */                                               
 26                                                   
 27 #define kernel_neon_begin() \                     
 28         BUILD_BUG_ON_MSG(1, "kernel_neon_begin    
 29                                                   
 30 #else                                             
 31 void kernel_neon_begin(void);                     
 32 #endif                                            
 33 void kernel_neon_end(void);                       
 34
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