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Linux/arch/sparc/lib/ipcsum.S

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Diff markup

Differences between /arch/sparc/lib/ipcsum.S (Version linux-6.12-rc7) and /arch/sparc/lib/ipcsum.S (Version linux-4.4.302)


  1 /* SPDX-License-Identifier: GPL-2.0 */         << 
  2 #include <linux/export.h>                      << 
  3 #include <linux/linkage.h>                          1 #include <linux/linkage.h>
  4                                                     2 
  5         .text                                       3         .text
  6 ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */      4 ENTRY(ip_fast_csum) /* %o0 = iph, %o1 = ihl */
  7         sub     %o1, 4, %g7                         5         sub     %o1, 4, %g7
  8         lduw    [%o0 + 0x00], %o2                   6         lduw    [%o0 + 0x00], %o2
  9         lduw    [%o0 + 0x04], %g2                   7         lduw    [%o0 + 0x04], %g2
 10         lduw    [%o0 + 0x08], %g3                   8         lduw    [%o0 + 0x08], %g3
 11         addcc   %g2, %o2, %o2                       9         addcc   %g2, %o2, %o2
 12         lduw    [%o0 + 0x0c], %g2                  10         lduw    [%o0 + 0x0c], %g2
 13         addccc  %g3, %o2, %o2                      11         addccc  %g3, %o2, %o2
 14         lduw    [%o0 + 0x10], %g3                  12         lduw    [%o0 + 0x10], %g3
 15                                                    13 
 16         addccc  %g2, %o2, %o2                      14         addccc  %g2, %o2, %o2
 17         addc    %o2, %g0, %o2                      15         addc    %o2, %g0, %o2
 18 1:      addcc   %g3, %o2, %o2                      16 1:      addcc   %g3, %o2, %o2
 19         add     %o0, 4, %o0                        17         add     %o0, 4, %o0
 20         addccc  %o2, %g0, %o2                      18         addccc  %o2, %g0, %o2
 21         subcc   %g7, 1, %g7                        19         subcc   %g7, 1, %g7
 22         be,a,pt %icc, 2f                           20         be,a,pt %icc, 2f
 23          sll    %o2, 16, %g2                       21          sll    %o2, 16, %g2
 24                                                    22 
 25         lduw    [%o0 + 0x10], %g3                  23         lduw    [%o0 + 0x10], %g3
 26         ba,pt   %xcc, 1b                           24         ba,pt   %xcc, 1b
 27          nop                                       25          nop
 28 2:      addcc   %o2, %g2, %g2                      26 2:      addcc   %o2, %g2, %g2
 29         srl     %g2, 16, %o2                       27         srl     %g2, 16, %o2
 30         addc    %o2, %g0, %o2                      28         addc    %o2, %g0, %o2
 31         xnor    %g0, %o2, %o2                      29         xnor    %g0, %o2, %o2
 32         set     0xffff, %o1                        30         set     0xffff, %o1
 33         retl                                       31         retl
 34          and    %o2, %o1, %o0                      32          and    %o2, %o1, %o0
 35 ENDPROC(ip_fast_csum)                              33 ENDPROC(ip_fast_csum)
 36 EXPORT_SYMBOL(ip_fast_csum)                    << 
                                                      

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