debug/gets_chk.s

   1         .text
   2 #APP
   3         .section .gnu.warning.__gets_chk
   4         .previous
   5 #NO_APP
   6         .p2align 4,,15
   7         .globl  __gets_chk
   8         .type   __gets_chk, @function
   9 __gets_chk:
  10 .LFB68:
  11         pushq   %r13
  12         pushq   %r12
  13         pushq   %rbp
  14         pushq   %rbx
  15         subq    $8, %rsp
  16         testq   %rsi, %rsi
  17         je      .L30
  18         movq    stdin(%rip), %rbp
  19         movq    %rdi, %rbx
  20         movq    %rsi, %r12
  21         movl    0(%rbp), %edx
  22         andl    $32768, %edx
  23         je      .L31
  24         movq    %rbp, %rdi
  25         movq    8(%rdi), %rax
  26         cmpq    16(%rdi), %rax
  27         jnb     .L32
  28 .L9:
  29         leaq    1(%rax), %rdx
  30         movq    %rdx, 8(%rdi)
  31         movzbl  (%rax), %eax
  32 .L11:
  33         xorl    %edx, %edx
  34         cmpl    $10, %eax
  35         je      .L13
  36         movq    stdin(%rip), %rcx
  37         leaq    1(%rbx), %rsi
  38         xorl    %r8d, %r8d
  39         movl    (%rcx), %edx
  40         movl    %edx, %r13d
  41         andl    $-33, %edx
  42         movl    %edx, (%rcx)
  43         movb    %al, (%rbx)
  44         leaq    -1(%r12), %rdx
  45         movq    stdin(%rip), %rdi
  46         movl    $10, %ecx
  47         andl    $32, %r13d
  48 .LEHB0:
  49         call    _IO_getline
  50         movq    stdin(%rip), %rcx
  51         leaq    1(%rax), %rdx
  52         movl    (%rcx), %eax
  53         testb   $32, %al
  54         jne     .L14
  55         orl     %eax, %r13d
  56         movl    %r13d, (%rcx)
  57 .L13:
  58         cmpq    %r12, %rdx
  59         jnb     .L33
  60         movb    $0, (%rbx,%rdx)
  61 .L12:
  62         testl   $32768, 0(%rbp)
  63         jne     .L1
  64         movq    136(%rbp), %rdi
  65         movl    4(%rdi), %eax
  66         subl    $1, %eax
  67         testl   %eax, %eax
  68         movl    %eax, 4(%rdi)
  69         jne     .L1
  70         movq    $0, 8(%rdi)
  71 #APP
  72 # 885 "../libio/libioP.h" 1
  73         movl %fs:24,%edx
  74 # 0 "" 2
  75 #NO_APP
  76         testl   %edx, %edx
  77         jne     .L19
  78         subl    $1, (%rdi)
  79 .L1:
  80         addq    $8, %rsp
  81         movq    %rbx, %rax
  82         popq    %rbx
  83         popq    %rbp
  84         popq    %r12
  85         popq    %r13
  86         ret
  87         .p2align 4,,10
  88         .p2align 3
  89 .L31:
  90         movq    136(%rbp), %rcx
  91         movq    %fs:16, %r13
  92         cmpq    %r13, 8(%rcx)
  93         je      .L24
  94 #APP
  95 # 40 "gets_chk.c" 1
  96         movl %fs:24,%eax
  97 # 0 "" 2
  98 #NO_APP
  99         testl   %eax, %eax
 100         jne     .L5
 101         movl    $1, %edx
 102 #APP
 103 # 47 "../sysdeps/unix/sysv/linux/x86/lowlevellock.h" 1
 104         cmpxchgl %edx, (%rcx)
 105 # 0 "" 2
 106 #NO_APP
 107 .L6:
 108         movq    136(%rbp), %rcx
 109         movq    stdin(%rip), %rdi
 110         movq    %r13, 8(%rcx)
 111 .L4:
 112         addl    $1, 4(%rcx)
 113         movq    8(%rdi), %rax
 114         cmpq    16(%rdi), %rax
 115         jb      .L9
 116 .L32:
 117         call    __uflow
 118         cmpl    $-1, %eax
 119         jne     .L11
 120 .L14:
 121         xorl    %ebx, %ebx
 122         jmp     .L12
 123         .p2align 4,,10
 124         .p2align 3
 125 .L24:
 126         movq    %rbp, %rdi
 127         jmp     .L4
 128         .p2align 4,,10
 129         .p2align 3
 130 .L5:
 131         movl    $1, %esi
 132         movl    %edx, %eax
 133         lock cmpxchgl   %esi, (%rcx)
 134         je      .L6
 135         movq    %rcx, %rdi
 136         call    __lll_lock_wait_private
 137         jmp     .L6
 138         .p2align 4,,10
 139         .p2align 3
 140 .L19:
 141 #APP
 142 # 885 "../libio/libioP.h" 1
 143         xchgl %eax, (%rdi)
 144 # 0 "" 2
 145 #NO_APP
 146         cmpl    $1, %eax
 147         jle     .L1
 148         xorl    %r10d, %r10d
 149         movl    $1, %edx
 150         movl    $129, %esi
 151         movl    $202, %eax
 152 #APP
 153 # 885 "../libio/libioP.h" 1
 154         syscall
 155
 156 # 0 "" 2
 157 #NO_APP
 158         jmp     .L1
 159 .L33:
 160         call    __chk_fail
 161 .LEHE0:
 162 .L26:
 163         testl   $32768, 0(%rbp)
 164         movq    %rax, %r8
 165         jne     .L21
 166         movq    136(%rbp), %rdi
 167         movl    4(%rdi), %eax
 168         subl    $1, %eax
 169         testl   %eax, %eax
 170         movl    %eax, 4(%rdi)
 171         jne     .L21
 172         movq    $0, 8(%rdi)
 173 #APP
 174 # 885 "../libio/libioP.h" 1
 175         movl %fs:24,%edx
 176 # 0 "" 2
 177 #NO_APP
 178         testl   %edx, %edx
 179         jne     .L22
 180         subl    $1, (%rdi)
 181 .L21:
 182         movq    %r8, %rdi
 183 .LEHB1:
 184         call    _Unwind_Resume@PLT
 185 .L30:
 186         call    __chk_fail
 187 .LEHE1:
 188 .L22:
 189 #APP
 190 # 885 "../libio/libioP.h" 1
 191         xchgl %eax, (%rdi)
 192 # 0 "" 2
 193 #NO_APP
 194         subl    $1, %eax
 195         jle     .L21
 196         xorl    %r10d, %r10d
 197         movl    $1, %edx
 198         movl    $129, %esi
 199         movl    $202, %eax
 200 #APP
 201 # 885 "../libio/libioP.h" 1
 202         syscall
 203
 204 # 0 "" 2
 205 #NO_APP
 206         jmp     .L21
 207 .LFE68:
 208         .globl  __gcc_personality_v0
 209         .section        .gcc_except_table,"a",@progbits
 210 .LLSDA68:
 211         .byte   0xff
 212         .byte   0xff
 213         .byte   0x1
 214         .uleb128 .LLSDACSE68-.LLSDACSB68
 215 .LLSDACSB68:
 216         .uleb128 .LEHB0-.LFB68
 217         .uleb128 .LEHE0-.LEHB0
 218         .uleb128 .L26-.LFB68
 219         .uleb128 0
 220         .uleb128 .LEHB1-.LFB68
 221         .uleb128 .LEHE1-.LEHB1
 222         .uleb128 0
 223         .uleb128 0
 224 .LLSDACSE68:
 225         .text
 226         .size   __gets_chk, .-__gets_chk
 227         .section        .gnu.warning.__gets_chk
 228         #,"a",@progbits
 229         .align 32
 230         .type   __evoke_link_warning___gets_chk, @object
 231         .size   __evoke_link_warning___gets_chk, 57
 232 __evoke_link_warning___gets_chk:
 233         .string "the `gets' function is dangerous and should not be used."
 234         .hidden DW.ref.__gcc_personality_v0
 235         .weak   DW.ref.__gcc_personality_v0
 236         .section        .data.DW.ref.__gcc_personality_v0,"awG",@progbits,DW.ref.__gcc_personality_v0,comdat
 237         .align 8
 238         .type   DW.ref.__gcc_personality_v0, @object
 239         .size   DW.ref.__gcc_personality_v0, 8
 240 DW.ref.__gcc_personality_v0:
 241         .quad   __gcc_personality_v0
 242         .hidden __chk_fail
 243         .hidden __lll_lock_wait_private
 244         .hidden __uflow
 245         .hidden _IO_getline