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Linux/arch/sparc/lib/bitops.S

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Diff markup

Differences between /arch/sparc/lib/bitops.S (Version linux-6.12-rc7) and /arch/sparc/lib/bitops.S (Version linux-2.6.32.71)


  1 /* SPDX-License-Identifier: GPL-2.0 */         << 
  2 /* bitops.S: Sparc64 atomic bit operations.         1 /* bitops.S: Sparc64 atomic bit operations.
  3  *                                                  2  *
  4  * Copyright (C) 2000, 2007 David S. Miller (d      3  * Copyright (C) 2000, 2007 David S. Miller (davem@davemloft.net)
  5  */                                                 4  */
  6                                                     5 
  7 #include <linux/export.h>                      << 
  8 #include <linux/linkage.h>                     << 
  9 #include <asm/asi.h>                                6 #include <asm/asi.h>
 10 #include <asm/backoff.h>                            7 #include <asm/backoff.h>
 11                                                     8 
 12         .text                                       9         .text
 13                                                    10 
 14 ENTRY(test_and_set_bit) /* %o0=nr, %o1=addr */ !!  11         .globl  test_and_set_bit
                                                   >>  12         .type   test_and_set_bit,#function
                                                   >>  13 test_and_set_bit:       /* %o0=nr, %o1=addr */
 15         BACKOFF_SETUP(%o3)                         14         BACKOFF_SETUP(%o3)
 16         srlx    %o0, 6, %g1                        15         srlx    %o0, 6, %g1
 17         mov     1, %o2                             16         mov     1, %o2
 18         sllx    %g1, 3, %g3                        17         sllx    %g1, 3, %g3
 19         and     %o0, 63, %g2                       18         and     %o0, 63, %g2
 20         sllx    %o2, %g2, %o2                      19         sllx    %o2, %g2, %o2
 21         add     %o1, %g3, %o1                      20         add     %o1, %g3, %o1
 22 1:      ldx     [%o1], %g7                         21 1:      ldx     [%o1], %g7
 23         or      %g7, %o2, %g1                      22         or      %g7, %o2, %g1
 24         casx    [%o1], %g7, %g1                    23         casx    [%o1], %g7, %g1
 25         cmp     %g7, %g1                           24         cmp     %g7, %g1
 26         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !!  25         bne,pn  %xcc, 2f
 27          and    %g7, %o2, %g2                      26          and    %g7, %o2, %g2
 28         clr     %o0                                27         clr     %o0
 29         movrne  %g2, 1, %o0                        28         movrne  %g2, 1, %o0
 30         retl                                       29         retl
 31          nop                                       30          nop
 32 2:      BACKOFF_SPIN(%o3, %o4, 1b)                 31 2:      BACKOFF_SPIN(%o3, %o4, 1b)
 33 ENDPROC(test_and_set_bit)                      !!  32         .size   test_and_set_bit, .-test_and_set_bit
 34 EXPORT_SYMBOL(test_and_set_bit)                << 
 35                                                    33 
 36 ENTRY(test_and_clear_bit) /* %o0=nr, %o1=addr  !!  34         .globl  test_and_clear_bit
                                                   >>  35         .type   test_and_clear_bit,#function
                                                   >>  36 test_and_clear_bit:     /* %o0=nr, %o1=addr */
 37         BACKOFF_SETUP(%o3)                         37         BACKOFF_SETUP(%o3)
 38         srlx    %o0, 6, %g1                        38         srlx    %o0, 6, %g1
 39         mov     1, %o2                             39         mov     1, %o2
 40         sllx    %g1, 3, %g3                        40         sllx    %g1, 3, %g3
 41         and     %o0, 63, %g2                       41         and     %o0, 63, %g2
 42         sllx    %o2, %g2, %o2                      42         sllx    %o2, %g2, %o2
 43         add     %o1, %g3, %o1                      43         add     %o1, %g3, %o1
 44 1:      ldx     [%o1], %g7                         44 1:      ldx     [%o1], %g7
 45         andn    %g7, %o2, %g1                      45         andn    %g7, %o2, %g1
 46         casx    [%o1], %g7, %g1                    46         casx    [%o1], %g7, %g1
 47         cmp     %g7, %g1                           47         cmp     %g7, %g1
 48         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !!  48         bne,pn  %xcc, 2f
 49          and    %g7, %o2, %g2                      49          and    %g7, %o2, %g2
 50         clr     %o0                                50         clr     %o0
 51         movrne  %g2, 1, %o0                        51         movrne  %g2, 1, %o0
 52         retl                                       52         retl
 53          nop                                       53          nop
 54 2:      BACKOFF_SPIN(%o3, %o4, 1b)                 54 2:      BACKOFF_SPIN(%o3, %o4, 1b)
 55 ENDPROC(test_and_clear_bit)                    !!  55         .size   test_and_clear_bit, .-test_and_clear_bit
 56 EXPORT_SYMBOL(test_and_clear_bit)              << 
 57                                                    56 
 58 ENTRY(test_and_change_bit) /* %o0=nr, %o1=addr !!  57         .globl  test_and_change_bit
                                                   >>  58         .type   test_and_change_bit,#function
                                                   >>  59 test_and_change_bit:    /* %o0=nr, %o1=addr */
 59         BACKOFF_SETUP(%o3)                         60         BACKOFF_SETUP(%o3)
 60         srlx    %o0, 6, %g1                        61         srlx    %o0, 6, %g1
 61         mov     1, %o2                             62         mov     1, %o2
 62         sllx    %g1, 3, %g3                        63         sllx    %g1, 3, %g3
 63         and     %o0, 63, %g2                       64         and     %o0, 63, %g2
 64         sllx    %o2, %g2, %o2                      65         sllx    %o2, %g2, %o2
 65         add     %o1, %g3, %o1                      66         add     %o1, %g3, %o1
 66 1:      ldx     [%o1], %g7                         67 1:      ldx     [%o1], %g7
 67         xor     %g7, %o2, %g1                      68         xor     %g7, %o2, %g1
 68         casx    [%o1], %g7, %g1                    69         casx    [%o1], %g7, %g1
 69         cmp     %g7, %g1                           70         cmp     %g7, %g1
 70         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !!  71         bne,pn  %xcc, 2f
 71          and    %g7, %o2, %g2                      72          and    %g7, %o2, %g2
 72         clr     %o0                                73         clr     %o0
 73         movrne  %g2, 1, %o0                        74         movrne  %g2, 1, %o0
 74         retl                                       75         retl
 75          nop                                       76          nop
 76 2:      BACKOFF_SPIN(%o3, %o4, 1b)                 77 2:      BACKOFF_SPIN(%o3, %o4, 1b)
 77 ENDPROC(test_and_change_bit)                   !!  78         .size   test_and_change_bit, .-test_and_change_bit
 78 EXPORT_SYMBOL(test_and_change_bit)             << 
 79                                                    79 
 80 ENTRY(set_bit) /* %o0=nr, %o1=addr */          !!  80         .globl  set_bit
                                                   >>  81         .type   set_bit,#function
                                                   >>  82 set_bit:                /* %o0=nr, %o1=addr */
 81         BACKOFF_SETUP(%o3)                         83         BACKOFF_SETUP(%o3)
 82         srlx    %o0, 6, %g1                        84         srlx    %o0, 6, %g1
 83         mov     1, %o2                             85         mov     1, %o2
 84         sllx    %g1, 3, %g3                        86         sllx    %g1, 3, %g3
 85         and     %o0, 63, %g2                       87         and     %o0, 63, %g2
 86         sllx    %o2, %g2, %o2                      88         sllx    %o2, %g2, %o2
 87         add     %o1, %g3, %o1                      89         add     %o1, %g3, %o1
 88 1:      ldx     [%o1], %g7                         90 1:      ldx     [%o1], %g7
 89         or      %g7, %o2, %g1                      91         or      %g7, %o2, %g1
 90         casx    [%o1], %g7, %g1                    92         casx    [%o1], %g7, %g1
 91         cmp     %g7, %g1                           93         cmp     %g7, %g1
 92         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !!  94         bne,pn  %xcc, 2f
 93          nop                                       95          nop
 94         retl                                       96         retl
 95          nop                                       97          nop
 96 2:      BACKOFF_SPIN(%o3, %o4, 1b)                 98 2:      BACKOFF_SPIN(%o3, %o4, 1b)
 97 ENDPROC(set_bit)                               !!  99         .size   set_bit, .-set_bit
 98 EXPORT_SYMBOL(set_bit)                         << 
 99                                                   100 
100 ENTRY(clear_bit) /* %o0=nr, %o1=addr */        !! 101         .globl  clear_bit
                                                   >> 102         .type   clear_bit,#function
                                                   >> 103 clear_bit:              /* %o0=nr, %o1=addr */
101         BACKOFF_SETUP(%o3)                        104         BACKOFF_SETUP(%o3)
102         srlx    %o0, 6, %g1                       105         srlx    %o0, 6, %g1
103         mov     1, %o2                            106         mov     1, %o2
104         sllx    %g1, 3, %g3                       107         sllx    %g1, 3, %g3
105         and     %o0, 63, %g2                      108         and     %o0, 63, %g2
106         sllx    %o2, %g2, %o2                     109         sllx    %o2, %g2, %o2
107         add     %o1, %g3, %o1                     110         add     %o1, %g3, %o1
108 1:      ldx     [%o1], %g7                        111 1:      ldx     [%o1], %g7
109         andn    %g7, %o2, %g1                     112         andn    %g7, %o2, %g1
110         casx    [%o1], %g7, %g1                   113         casx    [%o1], %g7, %g1
111         cmp     %g7, %g1                          114         cmp     %g7, %g1
112         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !! 115         bne,pn  %xcc, 2f
113          nop                                      116          nop
114         retl                                      117         retl
115          nop                                      118          nop
116 2:      BACKOFF_SPIN(%o3, %o4, 1b)                119 2:      BACKOFF_SPIN(%o3, %o4, 1b)
117 ENDPROC(clear_bit)                             !! 120         .size   clear_bit, .-clear_bit
118 EXPORT_SYMBOL(clear_bit)                       << 
119                                                   121 
120 ENTRY(change_bit) /* %o0=nr, %o1=addr */       !! 122         .globl  change_bit
                                                   >> 123         .type   change_bit,#function
                                                   >> 124 change_bit:             /* %o0=nr, %o1=addr */
121         BACKOFF_SETUP(%o3)                        125         BACKOFF_SETUP(%o3)
122         srlx    %o0, 6, %g1                       126         srlx    %o0, 6, %g1
123         mov     1, %o2                            127         mov     1, %o2
124         sllx    %g1, 3, %g3                       128         sllx    %g1, 3, %g3
125         and     %o0, 63, %g2                      129         and     %o0, 63, %g2
126         sllx    %o2, %g2, %o2                     130         sllx    %o2, %g2, %o2
127         add     %o1, %g3, %o1                     131         add     %o1, %g3, %o1
128 1:      ldx     [%o1], %g7                        132 1:      ldx     [%o1], %g7
129         xor     %g7, %o2, %g1                     133         xor     %g7, %o2, %g1
130         casx    [%o1], %g7, %g1                   134         casx    [%o1], %g7, %g1
131         cmp     %g7, %g1                          135         cmp     %g7, %g1
132         bne,pn  %xcc, BACKOFF_LABEL(2f, 1b)    !! 136         bne,pn  %xcc, 2f
133          nop                                      137          nop
134         retl                                      138         retl
135          nop                                      139          nop
136 2:      BACKOFF_SPIN(%o3, %o4, 1b)                140 2:      BACKOFF_SPIN(%o3, %o4, 1b)
137 ENDPROC(change_bit)                            !! 141         .size   change_bit, .-change_bit
138 EXPORT_SYMBOL(change_bit)                      << 
                                                      

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