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Linux/arch/sparc/lib/NG4fls.S

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Diff markup

Differences between /arch/sparc/lib/NG4fls.S (Version linux-6.12-rc7) and /arch/i386/lib/NG4fls.S (Version linux-2.6.0)

  1 /* NG4fls.S: SPARC optimized fls and __fls for    
  2  *                                                
  3  * Copyright (c) 2017, Oracle and/or its affil    
  4  */                                               
  5                                                   
  6 #include <linux/linkage.h>                        
  7                                                   
  8 #define LZCNT_O0_G2     \                         
  9         .word   0x85b002e8                        
 10                                                   
 11         .text                                     
 12         .register       %g2, #scratch             
 13         .register       %g3, #scratch             
 14                                                   
 15 ENTRY(NG4fls)                                     
 16         LZCNT_O0_G2     !lzcnt  %o0, %g2          
 17         mov     64, %g3                           
 18         retl                                      
 19          sub    %g3, %g2, %o0                     
 20 ENDPROC(NG4fls)                                   
 21                                                   
 22 ENTRY(__NG4fls)                                   
 23         brz,pn  %o0, 1f                           
 24         LZCNT_O0_G2     !lzcnt  %o0, %g2          
 25         mov     63, %g3                           
 26         sub     %g3, %g2, %o0                     
 27 1:                                                
 28         retl                                      
 29          nop                                      
 30 ENDPROC(__NG4fls)
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