libio/getchar.s

   1         .text
   2         .p2align 4,,15
   3         .globl  getchar
   4         .type   getchar, @function
   5 getchar:
   6 .LFB68:
   7         pushq   %rbp
   8         pushq   %rbx
   9         subq    $8, %rsp
  10         movq    stdin(%rip), %rbx
  11         testb   $-128, 116(%rbx)
  12         jne     .L2
  13         movq    8(%rbx), %rax
  14         cmpq    16(%rbx), %rax
  15         jnb     .L22
  16         leaq    1(%rax), %rdx
  17         movq    %rdx, 8(%rbx)
  18         movzbl  (%rax), %r8d
  19 .L1:
  20         addq    $8, %rsp
  21         movl    %r8d, %eax
  22         popq    %rbx
  23         popq    %rbp
  24         ret
  25         .p2align 4,,10
  26         .p2align 3
  27 .L2:
  28         movl    (%rbx), %edx
  29         andl    $32768, %edx
  30         je      .L23
  31         movq    %rbx, %rdi
  32 .L5:
  33         movq    8(%rdi), %rax
  34         cmpq    16(%rdi), %rax
  35         jnb     .L24
  36         leaq    1(%rax), %rdx
  37         movq    %rdx, 8(%rdi)
  38         movzbl  (%rax), %r8d
  39 .L12:
  40         testl   $32768, (%rbx)
  41         jne     .L1
  42         movq    136(%rbx), %rdi
  43         movl    4(%rdi), %eax
  44         subl    $1, %eax
  45         testl   %eax, %eax
  46         movl    %eax, 4(%rdi)
  47         jne     .L1
  48         movq    $0, 8(%rdi)
  49 #APP
  50 # 885 "libioP.h" 1
  51         movl %fs:24,%edx
  52 # 0 "" 2
  53 #NO_APP
  54         testl   %edx, %edx
  55         jne     .L13
  56         subl    $1, (%rdi)
  57         addq    $8, %rsp
  58         movl    %r8d, %eax
  59         popq    %rbx
  60         popq    %rbp
  61         ret
  62         .p2align 4,,10
  63         .p2align 3
  64 .L23:
  65         movq    136(%rbx), %rcx
  66         movq    %fs:16, %rbp
  67         cmpq    %rbp, 8(%rcx)
  68         je      .L18
  69 #APP
  70 # 38 "getchar.c" 1
  71         movl %fs:24,%eax
  72 # 0 "" 2
  73 #NO_APP
  74         testl   %eax, %eax
  75         jne     .L7
  76         movl    $1, %edx
  77 #APP
  78 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
  79         cmpxchgl %edx, (%rcx)
  80 # 0 "" 2
  81 #NO_APP
  82 .L8:
  83         movq    136(%rbx), %rcx
  84         movq    stdin(%rip), %rdi
  85         movq    %rbp, 8(%rcx)
  86 .L6:
  87         addl    $1, 4(%rcx)
  88         jmp     .L5
  89         .p2align 4,,10
  90         .p2align 3
  91 .L18:
  92         movq    %rbx, %rdi
  93         jmp     .L6
  94         .p2align 4,,10
  95         .p2align 3
  96 .L22:
  97         addq    $8, %rsp
  98         movq    %rbx, %rdi
  99         popq    %rbx
 100         popq    %rbp
 101 .LEHB0:
 102         jmp     __uflow
 103 .LEHE0:
 104         .p2align 4,,10
 105         .p2align 3
 106 .L24:
 107 .LEHB1:
 108         call    __uflow
 109         movl    %eax, %r8d
 110         jmp     .L12
 111         .p2align 4,,10
 112         .p2align 3
 113 .L7:
 114         movl    $1, %esi
 115         movl    %edx, %eax
 116         lock cmpxchgl   %esi, (%rcx)
 117         je      .L8
 118         movq    %rcx, %rdi
 119         call    __lll_lock_wait_private
 120 .LEHE1:
 121         jmp     .L8
 122         .p2align 4,,10
 123         .p2align 3
 124 .L13:
 125 #APP
 126 # 885 "libioP.h" 1
 127         xchgl %eax, (%rdi)
 128 # 0 "" 2
 129 #NO_APP
 130         cmpl    $1, %eax
 131         jle     .L1
 132         xorl    %r10d, %r10d
 133         movl    $1, %edx
 134         movl    $129, %esi
 135         movl    $202, %eax
 136 #APP
 137 # 885 "libioP.h" 1
 138         syscall
 139
 140 # 0 "" 2
 141 #NO_APP
 142         jmp     .L1
 143 .L19:
 144         testl   $32768, (%rbx)
 145         movq    %rax, %r8
 146         jne     .L15
 147         movq    136(%rbx), %rdi
 148         movl    4(%rdi), %eax
 149         subl    $1, %eax
 150         testl   %eax, %eax
 151         movl    %eax, 4(%rdi)
 152         jne     .L15
 153         movq    $0, 8(%rdi)
 154 #APP
 155 # 885 "libioP.h" 1
 156         movl %fs:24,%edx
 157 # 0 "" 2
 158 #NO_APP
 159         testl   %edx, %edx
 160         jne     .L16
 161         subl    $1, (%rdi)
 162 .L15:
 163         movq    %r8, %rdi
 164 .LEHB2:
 165         call    _Unwind_Resume@PLT
 166 .LEHE2:
 167 .L16:
 168 #APP
 169 # 885 "libioP.h" 1
 170         xchgl %eax, (%rdi)
 171 # 0 "" 2
 172 #NO_APP
 173         subl    $1, %eax
 174         jle     .L15
 175         xorl    %r10d, %r10d
 176         movl    $1, %edx
 177         movl    $129, %esi
 178         movl    $202, %eax
 179 #APP
 180 # 885 "libioP.h" 1
 181         syscall
 182
 183 # 0 "" 2
 184 #NO_APP
 185         jmp     .L15
 186 .LFE68:
 187         .globl  __gcc_personality_v0
 188         .section        .gcc_except_table,"a",@progbits
 189 .LLSDA68:
 190         .byte   0xff
 191         .byte   0xff
 192         .byte   0x1
 193         .uleb128 .LLSDACSE68-.LLSDACSB68
 194 .LLSDACSB68:
 195         .uleb128 .LEHB0-.LFB68
 196         .uleb128 .LEHE0-.LEHB0
 197         .uleb128 0
 198         .uleb128 0
 199         .uleb128 .LEHB1-.LFB68
 200         .uleb128 .LEHE1-.LEHB1
 201         .uleb128 .L19-.LFB68
 202         .uleb128 0
 203         .uleb128 .LEHB2-.LFB68
 204         .uleb128 .LEHE2-.LEHB2
 205         .uleb128 0
 206         .uleb128 0
 207 .LLSDACSE68:
 208         .text
 209         .size   getchar, .-getchar
 210         .hidden DW.ref.__gcc_personality_v0
 211         .weak   DW.ref.__gcc_personality_v0
 212         .section        .data.DW.ref.__gcc_personality_v0,"awG",@progbits,DW.ref.__gcc_personality_v0,comdat
 213         .align 8
 214         .type   DW.ref.__gcc_personality_v0, @object
 215         .size   DW.ref.__gcc_personality_v0, 8
 216 DW.ref.__gcc_personality_v0:
 217         .quad   __gcc_personality_v0
 218         .hidden __lll_lock_wait_private
 219         .hidden __uflow