libio/putchar.s

   1         .text
   2         .p2align 4,,15
   3         .globl  putchar
   4         .type   putchar, @function
   5 putchar:
   6 .LFB68:
   7         pushq   %r12
   8         pushq   %rbp
   9         movl    %edi, %ebp
  10         pushq   %rbx
  11         movq    stdout(%rip), %rbx
  12         movl    (%rbx), %edx
  13         andl    $32768, %edx
  14         jne     .L17
  15         movq    136(%rbx), %rcx
  16         movq    %fs:16, %r12
  17         cmpq    %r12, 8(%rcx)
  18         je      .L18
  19 #APP
  20 # 27 "putchar.c" 1
  21         movl %fs:24,%eax
  22 # 0 "" 2
  23 #NO_APP
  24         testl   %eax, %eax
  25         jne     .L4
  26         movl    $1, %edx
  27 #APP
  28 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  29         cmpxchgl %edx, (%rcx)
  30 # 0 "" 2
  31 #NO_APP
  32 .L5:
  33         movq    136(%rbx), %rcx
  34         movq    stdout(%rip), %rdi
  35         movq    %r12, 8(%rcx)
  36 .L3:
  37         addl    $1, 4(%rcx)
  38         movq    40(%rdi), %rax
  39         movzbl  %bpl, %r8d
  40         cmpq    48(%rdi), %rax
  41         jb      .L8
  42 .L23:
  43         movl    %r8d, %esi
  44 .LEHB0:
  45         call    __overflow
  46         testl   $32768, (%rbx)
  47         movl    %eax, %r8d
  48         je      .L22
  49 .L1:
  50         popq    %rbx
  51         movl    %r8d, %eax
  52         popq    %rbp
  53         popq    %r12
  54         ret
  55         .p2align 4,,10
  56         .p2align 3
  57 .L17:
  58         movq    %rbx, %rdi
  59         movzbl  %bpl, %r8d
  60         movq    40(%rdi), %rax
  61         cmpq    48(%rdi), %rax
  62         jnb     .L23
  63 .L8:
  64         leaq    1(%rax), %rdx
  65         movq    %rdx, 40(%rdi)
  66         movb    %bpl, (%rax)
  67         testl   $32768, (%rbx)
  68         jne     .L1
  69 .L22:
  70         movq    136(%rbx), %rdi
  71         movl    4(%rdi), %eax
  72         subl    $1, %eax
  73         testl   %eax, %eax
  74         movl    %eax, 4(%rdi)
  75         jne     .L1
  76         movq    $0, 8(%rdi)
  77 #APP
  78 # 885 "libioP.h" 1
  79         movl %fs:24,%edx
  80 # 0 "" 2
  81 #NO_APP
  82         testl   %edx, %edx
  83         jne     .L13
  84         subl    $1, (%rdi)
  85         movl    %r8d, %eax
  86         popq    %rbx
  87         popq    %rbp
  88         popq    %r12
  89         ret
  90         .p2align 4,,10
  91         .p2align 3
  92 .L18:
  93         movq    %rbx, %rdi
  94         jmp     .L3
  95         .p2align 4,,10
  96         .p2align 3
  97 .L4:
  98         movl    $1, %esi
  99         movl    %edx, %eax
 100         lock cmpxchgl   %esi, (%rcx)
 101         je      .L5
 102         movq    %rcx, %rdi
 103         call    __lll_lock_wait_private
 104 .LEHE0:
 105         jmp     .L5
 106         .p2align 4,,10
 107         .p2align 3
 108 .L13:
 109 #APP
 110 # 885 "libioP.h" 1
 111         xchgl %eax, (%rdi)
 112 # 0 "" 2
 113 #NO_APP
 114         cmpl    $1, %eax
 115         jle     .L1
 116         xorl    %r10d, %r10d
 117         movl    $1, %edx
 118         movl    $129, %esi
 119         movl    $202, %eax
 120 #APP
 121 # 885 "libioP.h" 1
 122         syscall
 123
 124 # 0 "" 2
 125 #NO_APP
 126         jmp     .L1
 127 .L19:
 128         testl   $32768, (%rbx)
 129         movq    %rax, %r8
 130         jne     .L15
 131         movq    136(%rbx), %rdi
 132         movl    4(%rdi), %eax
 133         subl    $1, %eax
 134         testl   %eax, %eax
 135         movl    %eax, 4(%rdi)
 136         jne     .L15
 137         movq    $0, 8(%rdi)
 138 #APP
 139 # 885 "libioP.h" 1
 140         movl %fs:24,%edx
 141 # 0 "" 2
 142 #NO_APP
 143         testl   %edx, %edx
 144         jne     .L16
 145         subl    $1, (%rdi)
 146 .L15:
 147         movq    %r8, %rdi
 148 .LEHB1:
 149         call    _Unwind_Resume@PLT
 150 .LEHE1:
 151 .L16:
 152 #APP
 153 # 885 "libioP.h" 1
 154         xchgl %eax, (%rdi)
 155 # 0 "" 2
 156 #NO_APP
 157         subl    $1, %eax
 158         jle     .L15
 159         xorl    %r10d, %r10d
 160         movl    $1, %edx
 161         movl    $129, %esi
 162         movl    $202, %eax
 163 #APP
 164 # 885 "libioP.h" 1
 165         syscall
 166
 167 # 0 "" 2
 168 #NO_APP
 169         jmp     .L15
 170 .LFE68:
 171         .globl  __gcc_personality_v0
 172         .section        .gcc_except_table,"a",@progbits
 173 .LLSDA68:
 174         .byte   0xff
 175         .byte   0xff
 176         .byte   0x1
 177         .uleb128 .LLSDACSE68-.LLSDACSB68
 178 .LLSDACSB68:
 179         .uleb128 .LEHB0-.LFB68
 180         .uleb128 .LEHE0-.LEHB0
 181         .uleb128 .L19-.LFB68
 182         .uleb128 0
 183         .uleb128 .LEHB1-.LFB68
 184         .uleb128 .LEHE1-.LEHB1
 185         .uleb128 0
 186         .uleb128 0
 187 .LLSDACSE68:
 188         .text
 189         .size   putchar, .-putchar
 190         .hidden DW.ref.__gcc_personality_v0
 191         .weak   DW.ref.__gcc_personality_v0
 192         .section        .data.DW.ref.__gcc_personality_v0,"awG",@progbits,DW.ref.__gcc_personality_v0,comdat
 193         .align 8
 194         .type   DW.ref.__gcc_personality_v0, @object
 195         .size   DW.ref.__gcc_personality_v0, 8
 196 DW.ref.__gcc_personality_v0:
 197         .quad   __gcc_personality_v0
 198         .hidden __lll_lock_wait_private
 199         .hidden __overflow