ceph/src/boost/libs/context/src/asm/ontop_ppc32_sysv_xcoff_gas.S

   1 .globl .ontop_fcontext
   2 .globl  ontop_fcontext[DS]
   3 .align 2
   4 .csect  ontop_fcontext[DS]
   5 ontop_fcontext:
   6   .long .ontop_fcontext
   7 .ontop_fcontext:
   8     # reserve space on stack
   9     subi 1, 1, 92
  10
  11     stw  13, 0(1)  # save R13
  12     stw  14, 4(1)  # save R14
  13     stw  15, 8(1)  # save R15
  14     stw  16, 12(1)  # save R16
  15     stw  17, 16(1)  # save R17
  16     stw  18, 20(1)  # save R18
  17     stw  19, 24(1)  # save R19
  18     stw  20, 28(1)  # save R20
  19     stw  21, 32(1)  # save R21
  20     stw  22, 36(1)  # save R22
  21     stw  23, 40(1)  # save R23
  22     stw  24, 44(1)  # save R24
  23     stw  25, 48(1)  # save R25
  24     stw  26, 52(1)  # save R26
  25     stw  27, 56(1)  # save R27
  26     stw  28, 60(1)  # save R28
  27     stw  29, 64(1)  # save R29
  28     stw  30, 68(1)  # save R30
  29     stw  31, 72(1)  # save R31
  30     stw  3,  76(1)  # save hidden
  31
  32     # save CR
  33     mfcr 0
  34     stw 0, 80(1)
  35     # save LR
  36     mflr 0
  37     stw 0, 84(1)
  38     # save LR as PC
  39     stw 0, 88(1)
  40
  41     # store RSP (pointing to context-data) in R6
  42     mr  7, 1
  43
  44     # restore RSP (pointing to context-data) from R4
  45     mr  1, 4
  46
  47     lwz  13, 0(1)  # restore R13
  48     lwz  14, 4(1)  # restore R14
  49     lwz  15, 8(1)  # restore R15
  50     lwz  16, 12(1)  # restore R16
  51     lwz  17, 16(1)  # restore R17
  52     lwz  18, 20(1)  # restore R18
  53     lwz  19, 24(1)  # restore R19
  54     lwz  20, 28(1)  # restore R20
  55     lwz  21, 32(1)  # restore R21
  56     lwz  22, 36(1)  # restore R22
  57     lwz  23, 40(1)  # restore R23
  58     lwz  24, 44(1)  # restore R24
  59     lwz  25, 48(1)  # restore R25
  60     lwz  26, 52(1)  # restore R26
  61     lwz  27, 56(1)  # restore R27
  62     lwz  28, 60(1)  # restore R28
  63     lwz  29, 64(1)  # restore R29
  64     lwz  30, 68(1)  # restore R30
  65     lwz  31, 72(1)  # restore R31
  66     lwz  4,  76(1)  # restore hidden
  67
  68     # restore CR
  69     lwz 0, 80(1)
  70     mtcr 0
  71     # restore LR
  72     lwz 0, 84(1)
  73     mtlr 0
  74     # ignore PC
  75
  76     # adjust stack
  77     addi 1, 1, 92
  78
  79     # return transfer_t
  80     stw  7, 0(3)
  81     stw  5, 4(3)
  82
  83     # restore CTR
  84     mtctr 6
  85
  86     # jump to context
  87     bctr