stdlib/sub_n.shared.s

   1  .text
   2 .globl __mpn_sub_n
   3 .type __mpn_sub_n,@function
   4 .align 1<<4
   5 __mpn_sub_n:
   6  xor %r8, %r8
   7  mov (%rsi), %r10
   8  mov (%rdx), %r11
   9  lea -8(%rsi,%rcx,8), %rsi
  10  lea -8(%rdx,%rcx,8), %rdx
  11  lea -16(%rdi,%rcx,8), %rdi
  12  mov %ecx, %eax
  13  neg %rcx
  14  and $3, %eax
  15  je .Lb00
  16  add %rax, %rcx
  17  cmp $2, %eax
  18  jl .Lb01
  19  je .Lb10
  20 .Lb11: shr %r8
  21  jmp .Le11
  22 .Lb00: shr %r8
  23  mov %r10, %r8
  24  mov %r11, %r9
  25  lea 4(%rcx), %rcx
  26  jmp .Le00
  27 .Lb01: shr %r8
  28  jmp .Le01
  29 .Lb10: shr %r8
  30  mov %r10, %r8
  31  mov %r11, %r9
  32  jmp .Le10
  33 .Lend: sbb %r11, %r10
  34  mov %r10, 8(%rdi)
  35  mov %ecx, %eax
  36  adc %eax, %eax
  37  ret
  38  .p2align 4
  39 .Ltop:
  40  mov -24(%rsi,%rcx,8), %r8
  41  mov -24(%rdx,%rcx,8), %r9
  42  sbb %r11, %r10
  43  mov %r10, -24(%rdi,%rcx,8)
  44 .Le00:
  45  mov -16(%rsi,%rcx,8), %r10
  46  mov -16(%rdx,%rcx,8), %r11
  47  sbb %r9, %r8
  48  mov %r8, -16(%rdi,%rcx,8)
  49 .Le11:
  50  mov -8(%rsi,%rcx,8), %r8
  51  mov -8(%rdx,%rcx,8), %r9
  52  sbb %r11, %r10
  53  mov %r10, -8(%rdi,%rcx,8)
  54 .Le10:
  55  mov (%rsi,%rcx,8), %r10
  56  mov (%rdx,%rcx,8), %r11
  57  sbb %r9, %r8
  58  mov %r8, (%rdi,%rcx,8)
  59 .Le01:
  60  jrcxz .Lend
  61  lea 4(%rcx), %rcx
  62  jmp .Ltop
  63 .size __mpn_sub_n,.-__mpn_sub_n