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Linux/arch/sparc/lib/NG4clear_page.S

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Diff markup

Differences between /arch/sparc/lib/NG4clear_page.S (Architecture ppc) and /arch/sparc64/lib/NG4clear_page.S (Architecture sparc64)

  1 /* SPDX-License-Identifier: GPL-2.0 */            
  2 /* NG4copy_page.S: Niagara-4 optimized clear p    
  3  *                                                
  4  * Copyright (C) 2012 (davem@davemloft.net)       
  5  */                                               
  6                                                   
  7 #include <asm/asi.h>                              
  8 #include <asm/page.h>                             
  9                                                   
 10         .text                                     
 11                                                   
 12         .register       %g3, #scratch             
 13                                                   
 14         .align          32                        
 15         .globl          NG4clear_page             
 16         .globl          NG4clear_user_page        
 17 NG4clear_page:          /* %o0=dest */            
 18 NG4clear_user_page:     /* %o0=dest, %o1=vaddr    
 19         set             PAGE_SIZE, %g7            
 20         mov             0x20, %g3                 
 21 1:      stxa            %g0, [%o0 + %g0] ASI_S    
 22         subcc           %g7, 0x40, %g7            
 23         stxa            %g0, [%o0 + %g3] ASI_S    
 24         bne,pt          %xcc, 1b                  
 25          add            %o0, 0x40, %o0            
 26         membar          #StoreLoad|#StoreStore    
 27         retl                                      
 28          nop                                      
 29         .size           NG4clear_page,.-NG4cle    
 30         .size           NG4clear_user_page,.-N
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