io/posix_fallocate.s

   1         .text
   2         .section        .rodata.str1.1,"aMS",@progbits,1
   3 .LC0:
   4         .string ""
   5         .text
   6         .p2align 4,,15
   7         .type   internal_fallocate, @function
   8 internal_fallocate:
   9         pushq   %r15
  10         pushq   %r14
  11         pushq   %r13
  12         pushq   %r12
  13         pushq   %rbp
  14         pushq   %rbx
  15         subq    $296, %rsp
  16         testq   %rsi, %rsi
  17         js      .L15
  18         testq   %rdx, %rdx
  19         movq    %rdx, %rbx
  20         js      .L15
  21         movq    %rsi, %rax
  22         movq    %rsi, %r15
  23         movl    $27, %ebp
  24         addq    %rdx, %rax
  25         js      .L1
  26         xorl    %edx, %edx
  27         xorl    %eax, %eax
  28         movl    $3, %esi
  29         movl    %edi, %r13d
  30         call    __fcntl
  31         testl   %eax, %eax
  32         js      .L4
  33         testb   $4, %ah
  34         jne     .L4
  35         leaq    144(%rsp), %rsi
  36         movl    %r13d, %edi
  37         call    __fstat64
  38         testl   %eax, %eax
  39         movl    %eax, %ebp
  40         jne     .L4
  41         movl    168(%rsp), %eax
  42         andl    $61440, %eax
  43         cmpl    $4096, %eax
  44         je      .L17
  45         cmpl    $32768, %eax
  46         jne     .L18
  47         testq   %rbx, %rbx
  48         jne     .L5
  49         cmpq    %r15, 192(%rsp)
  50         jge     .L1
  51         movq    %r15, %rsi
  52         movl    %r13d, %edi
  53         call    __ftruncate
  54         testl   %eax, %eax
  55         je      .L1
  56 .L32:
  57         movq    __libc_errno@gottpoff(%rip), %rax
  58         movl    %fs:(%rax), %ebp
  59 .L1:
  60         addq    $296, %rsp
  61         movl    %ebp, %eax
  62         popq    %rbx
  63         popq    %rbp
  64         popq    %r12
  65         popq    %r13
  66         popq    %r14
  67         popq    %r15
  68         ret
  69         .p2align 4,,10
  70         .p2align 3
  71 .L4:
  72         movl    $9, %ebp
  73         jmp     .L1
  74         .p2align 4,,10
  75         .p2align 3
  76 .L15:
  77         movl    $22, %ebp
  78         jmp     .L1
  79         .p2align 4,,10
  80         .p2align 3
  81 .L5:
  82         leaq    16(%rsp), %rsi
  83         movl    %r13d, %edi
  84         movq    %rsi, 8(%rsp)
  85         call    __fstatfs64
  86         testl   %eax, %eax
  87         jne     .L32
  88         movq    24(%rsp), %rax
  89         movl    $512, %r14d
  90         testq   %rax, %rax
  91         je      .L9
  92         movl    %eax, %r14d
  93         cmpq    $4096, %rax
  94         movl    $4096, %eax
  95         cmovge  %rax, %r14
  96 .L9:
  97         leaq    -1(%rbx), %rax
  98         leaq    .LC0(%rip), %r12
  99         cqto
 100         idivq   %r14
 101         addq    %rdx, %r15
 102         jmp     .L14
 103         .p2align 4,,10
 104         .p2align 3
 105 .L10:
 106         movq    %r15, %rcx
 107         movl    $1, %edx
 108         movq    %r12, %rsi
 109         movl    %r13d, %edi
 110         call    __pwrite
 111         cmpq    $1, %rax
 112         jne     .L32
 113 .L13:
 114         addq    %r14, %r15
 115         testq   %rbx, %rbx
 116         jle     .L1
 117 .L14:
 118         subq    %r14, %rbx
 119         cmpq    %r15, 192(%rsp)
 120         jle     .L10
 121         movq    8(%rsp), %rsi
 122         movq    %r15, %rcx
 123         movl    $1, %edx
 124         movl    %r13d, %edi
 125         call    __pread
 126         testq   %rax, %rax
 127         js      .L32
 128         cmpq    $1, %rax
 129         jne     .L10
 130         cmpb    $0, 16(%rsp)
 131         je      .L10
 132         jmp     .L13
 133         .p2align 4,,10
 134         .p2align 3
 135 .L18:
 136         movl    $19, %ebp
 137         jmp     .L1
 138         .p2align 4,,10
 139         .p2align 3
 140 .L17:
 141         movl    $29, %ebp
 142         jmp     .L1
 143         .size   internal_fallocate, .-internal_fallocate
 144         .p2align 4,,15
 145         .globl  posix_fallocate
 146         .type   posix_fallocate, @function
 147 posix_fallocate:
 148         pushq   %rbx
 149         movq    %rsi, %r9
 150         movq    %rdx, %rbx
 151         movq    %rdx, %r10
 152         movl    $285, %eax
 153         movq    %rsi, %rdx
 154         xorl    %esi, %esi
 155 #APP
 156 # 29 "../sysdeps/unix/sysv/linux/posix_fallocate.c" 1
 157         syscall
 158
 159 # 0 "" 2
 160 #NO_APP
 161         cmpl    $-4096, %eax
 162         jbe     .L37
 163         cmpl    $-95, %eax
 164         je      .L36
 165         negl    %eax
 166         popq    %rbx
 167         ret
 168         .p2align 4,,10
 169         .p2align 3
 170 .L37:
 171         xorl    %eax, %eax
 172         popq    %rbx
 173         ret
 174         .p2align 4,,10
 175         .p2align 3
 176 .L36:
 177         movq    %rbx, %rdx
 178         movq    %r9, %rsi
 179         popq    %rbx
 180         jmp     internal_fallocate
 181         .size   posix_fallocate, .-posix_fallocate
 182         .hidden __pread
 183         .hidden __pwrite
 184         .hidden __fstatfs64
 185         .hidden __ftruncate
 186         .hidden __fstat64
 187         .hidden __fcntl