i386/ucla/src/lab1/obj/boot/boot.asm

   1
   2 obj/boot/boot.out:     file format elf32-i386
   3
   4
   5 Disassembly of section .text:
   6
   7 00007c00 <_text>:
   8     7c00:       fa                      cli
   9     7c01:       fc                      cld
  10     7c02:       31 c0                   xor    %eax,%eax
  11     7c04:       8e d8                   mov    %eax,%ds
  12     7c06:       8e c0                   mov    %eax,%es
  13     7c08:       8e d0                   mov    %eax,%ss
  14
  15 00007c0a <seta20.1>:
  16     7c0a:       e4 64                   in     $0x64,%al
  17     7c0c:       a8 02                   test   $0x2,%al
  18     7c0e:       75 fa                   jne    7c0a <seta20.1>
  19     7c10:       b0 d1                   mov    $0xd1,%al
  20     7c12:       e6 64                   out    %al,$0x64
  21
  22 00007c14 <seta20.2>:
  23     7c14:       e4 64                   in     $0x64,%al
  24     7c16:       a8 02                   test   $0x2,%al
  25     7c18:       75 fa                   jne    7c14 <seta20.2>
  26     7c1a:       b0 df                   mov    $0xdf,%al
  27     7c1c:       e6 60                   out    %al,$0x60
  28     7c1e:       0f 01 16                lgdtl  (%esi)
  29     7c21:       64                      fs
  30     7c22:       7c 0f                   jl     7c33 <protcseg+0x1>
  31     7c24:       20 c0                   and    %al,%al
  32     7c26:       66 83 c8 01             or     $0x1,%ax
  33     7c2a:       0f 22 c0                mov    %eax,%cr0
  34     7c2d:       ea 32 7c 08 00 66 b8    ljmp   $0xb866,$0x87c32
  35
  36 00007c32 <protcseg>:
  37     7c32:       66 b8 10 00             mov    $0x10,%ax
  38     7c36:       8e d8                   mov    %eax,%ds
  39     7c38:       8e c0                   mov    %eax,%es
  40     7c3a:       8e e0                   mov    %eax,%fs
  41     7c3c:       8e e8                   mov    %eax,%gs
  42     7c3e:       8e d0                   mov    %eax,%ss
  43     7c40:       bc 00 7c 00 00          mov    $0x7c00,%esp
  44     7c45:       e8 da 00 00 00          call   7d24 <bootmain>
  45
  46 00007c4a <spin>:
  47     7c4a:       eb fe                   jmp    7c4a <spin>
  48
  49 00007c4c <gdt>:
  50         ...
  51     7c54:       ff                      (bad)
  52     7c55:       ff 00                   incl   (%eax)
  53     7c57:       00 00                   add    %al,(%eax)
  54     7c59:       9a cf 00 ff ff 00 00    lcall  $0x0,$0xffff00cf
  55     7c60:       00 92 cf 00 17 00       add    %dl,0x1700cf(%edx)
  56
  57 00007c64 <gdtdesc>:
  58     7c64:       17                      pop    %ss
  59     7c65:       00 4c 7c 00             add    %cl,0x0(%esp,%edi,2)
  60     7c69:       00 00                   add    %al,(%eax)
  61         ...
  62
  63 00007c6c <waitdisk>:
  64     7c6c:       55                      push   %ebp
  65     7c6d:       ba f7 01 00 00          mov    $0x1f7,%edx
  66     7c72:       89 e5                   mov    %esp,%ebp
  67     7c74:       ec                      in     (%dx),%al
  68     7c75:       25 c0 00 00 00          and    $0xc0,%eax
  69     7c7a:       83 f8 40                cmp    $0x40,%eax
  70     7c7d:       75 f5                   jne    7c74 <waitdisk+0x8>
  71     7c7f:       5d                      pop    %ebp
  72     7c80:       c3                      ret
  73
  74 00007c81 <readsect>:
  75     7c81:       55                      push   %ebp
  76     7c82:       89 e5                   mov    %esp,%ebp
  77     7c84:       57                      push   %edi
  78     7c85:       8b 7d 0c                mov    0xc(%ebp),%edi
  79     7c88:       e8 df ff ff ff          call   7c6c <waitdisk>
  80     7c8d:       ba f2 01 00 00          mov    $0x1f2,%edx
  81     7c92:       b0 01                   mov    $0x1,%al
  82     7c94:       ee                      out    %al,(%dx)
  83     7c95:       b2 f3                   mov    $0xf3,%dl
  84     7c97:       89 f8                   mov    %edi,%eax
  85     7c99:       ee                      out    %al,(%dx)
  86     7c9a:       89 f8                   mov    %edi,%eax
  87     7c9c:       b2 f4                   mov    $0xf4,%dl
  88     7c9e:       c1 e8 08                shr    $0x8,%eax
  89     7ca1:       ee                      out    %al,(%dx)
  90     7ca2:       89 f8                   mov    %edi,%eax
  91     7ca4:       b2 f5                   mov    $0xf5,%dl
  92     7ca6:       c1 e8 10                shr    $0x10,%eax
  93     7ca9:       ee                      out    %al,(%dx)
  94     7caa:       c1 ef 18                shr    $0x18,%edi
  95     7cad:       b2 f6                   mov    $0xf6,%dl
  96     7caf:       89 f8                   mov    %edi,%eax
  97     7cb1:       83 c8 e0                or     $0xffffffe0,%eax
  98     7cb4:       ee                      out    %al,(%dx)
  99     7cb5:       b0 20                   mov    $0x20,%al
 100     7cb7:       b2 f7                   mov    $0xf7,%dl
 101     7cb9:       ee                      out    %al,(%dx)
 102     7cba:       e8 ad ff ff ff          call   7c6c <waitdisk>
 103     7cbf:       8b 7d 08                mov    0x8(%ebp),%edi
 104     7cc2:       b9 80 00 00 00          mov    $0x80,%ecx
 105     7cc7:       ba f0 01 00 00          mov    $0x1f0,%edx
 106     7ccc:       fc                      cld
 107     7ccd:       f2 6d                   repnz insl (%dx),%es:(%edi)
 108     7ccf:       5f                      pop    %edi
 109     7cd0:       5d                      pop    %ebp
 110     7cd1:       c3                      ret
 111
 112 00007cd2 <readseg>:
 113     7cd2:       55                      push   %ebp
 114     7cd3:       89 e5                   mov    %esp,%ebp
 115     7cd5:       57                      push   %edi
 116     7cd6:       56                      push   %esi
 117     7cd7:       53                      push   %ebx
 118     7cd8:       51                      push   %ecx
 119     7cd9:       8b 75 08                mov    0x8(%ebp),%esi
 120     7cdc:       8b 5d 0c                mov    0xc(%ebp),%ebx
 121     7cdf:       8b 7d 14                mov    0x14(%ebp),%edi
 122     7ce2:       89 f0                   mov    %esi,%eax
 123     7ce4:       81 e6 00 fe ff 00       and    $0xfffe00,%esi
 124     7cea:       25 ff ff ff 00          and    $0xffffff,%eax
 125     7cef:       01 c3                   add    %eax,%ebx
 126     7cf1:       03 45 10                add    0x10(%ebp),%eax
 127     7cf4:       c1 ef 09                shr    $0x9,%edi
 128     7cf7:       47                      inc    %edi
 129     7cf8:       89 45 f0                mov    %eax,-0x10(%ebp)
 130     7cfb:       eb 10                   jmp    7d0d <readseg+0x3b>
 131     7cfd:       57                      push   %edi
 132     7cfe:       47                      inc    %edi
 133     7cff:       56                      push   %esi
 134     7d00:       81 c6 00 02 00 00       add    $0x200,%esi
 135     7d06:       e8 76 ff ff ff          call   7c81 <readsect>
 136     7d0b:       58                      pop    %eax
 137     7d0c:       5a                      pop    %edx
 138     7d0d:       39 de                   cmp    %ebx,%esi
 139     7d0f:       72 ec                   jb     7cfd <readseg+0x2b>
 140     7d11:       eb 04                   jmp    7d17 <readseg+0x45>
 141     7d13:       c6 03 00                movb   $0x0,(%ebx)
 142     7d16:       43                      inc    %ebx
 143     7d17:       3b 5d f0                cmp    -0x10(%ebp),%ebx
 144     7d1a:       72 f7                   jb     7d13 <readseg+0x41>
 145     7d1c:       8d 65 f4                lea    -0xc(%ebp),%esp
 146     7d1f:       5b                      pop    %ebx
 147     7d20:       5e                      pop    %esi
 148     7d21:       5f                      pop    %edi
 149     7d22:       5d                      pop    %ebp
 150     7d23:       c3                      ret
 151
 152 00007d24 <bootmain>:
 153     7d24:       55                      push   %ebp
 154     7d25:       89 e5                   mov    %esp,%ebp
 155     7d27:       56                      push   %esi
 156     7d28:       53                      push   %ebx
 157     7d29:       6a 00                   push   $0x0
 158     7d2b:       68 00 10 00 00          push   $0x1000
 159     7d30:       68 00 10 00 00          push   $0x1000
 160     7d35:       68 00 00 01 00          push   $0x10000
 161     7d3a:       e8 93 ff ff ff          call   7cd2 <readseg>
 162     7d3f:       83 c4 10                add    $0x10,%esp
 163     7d42:       81 3d 00 00 01 00 7f    cmpl   $0x464c457f,0x10000
 164     7d49:       45 4c 46
 165     7d4c:       75 42                   jne    7d90 <bootmain+0x6c>
 166     7d4e:       8b 1d 1c 00 01 00       mov    0x1001c,%ebx
 167     7d54:       0f b7 05 2c 00 01 00    movzwl 0x1002c,%eax
 168     7d5b:       81 c3 00 00 01 00       add    $0x10000,%ebx
 169     7d61:       c1 e0 05                shl    $0x5,%eax
 170     7d64:       8d 34 03                lea    (%ebx,%eax,1),%esi
 171     7d67:       eb 17                   jmp    7d80 <bootmain+0x5c>
 172     7d69:       ff 73 04                pushl  0x4(%ebx)
 173     7d6c:       ff 73 14                pushl  0x14(%ebx)
 174     7d6f:       ff 73 10                pushl  0x10(%ebx)
 175     7d72:       ff 73 08                pushl  0x8(%ebx)
 176     7d75:       83 c3 20                add    $0x20,%ebx
 177     7d78:       e8 55 ff ff ff          call   7cd2 <readseg>
 178     7d7d:       83 c4 10                add    $0x10,%esp
 179     7d80:       39 f3                   cmp    %esi,%ebx
 180     7d82:       72 e5                   jb     7d69 <bootmain+0x45>
 181     7d84:       a1 18 00 01 00          mov    0x10018,%eax
 182     7d89:       25 ff ff ff 00          and    $0xffffff,%eax
 183     7d8e:       ff d0                   call   *%eax
 184     7d90:       ba 00 8a 00 00          mov    $0x8a00,%edx
 185     7d95:       b8 00 8a ff ff          mov    $0xffff8a00,%eax
 186     7d9a:       66 ef                   out    %ax,(%dx)
 187     7d9c:       b8 00 8e ff ff          mov    $0xffff8e00,%eax
 188     7da1:       66 ef                   out    %ax,(%dx)
 189     7da3:       8d 65 f8                lea    -0x8(%ebp),%esp
 190     7da6:       5b                      pop    %ebx
 191     7da7:       5e                      pop    %esi
 192     7da8:       5d                      pop    %ebp
 193     7da9:       c3                      ret