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0
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1
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2 build/start.o_gcc: file format elf32-littlearm
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3
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4
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5 Disassembly of section .text:
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6
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7 00000000 <_uart_putc>:
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8 0: e52db004 push {fp} ; (str fp, [sp, #-4]!)
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9 4: e28db000 add fp, sp, #0
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10 8: e24dd014 sub sp, sp, #20
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11 c: e50b0010 str r0, [fp, #-16]
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12 10: e59f301c ldr r3, [pc, #28] ; 34 <_uart_putc+0x34>
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13 14: e50b3008 str r3, [fp, #-8]
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14 18: e51b3010 ldr r3, [fp, #-16]
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15 1c: e6ef2073 uxtb r2, r3
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16 20: e51b3008 ldr r3, [fp, #-8]
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17 24: e5c32000 strb r2, [r3]
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18 28: e24bd000 sub sp, fp, #0
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19 2c: e49db004 pop {fp} ; (ldr fp, [sp], #4)
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20 30: e12fff1e bx lr
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21 34: 101f1000 .word 0x101f1000
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22
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23 00000038 <_puts>:
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24 38: e92d4800 push {fp, lr}
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25 3c: e28db004 add fp, sp, #4
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26 40: e24dd008 sub sp, sp, #8
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27 44: e50b0008 str r0, [fp, #-8]
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28 48: ea000006 b 68 <_puts+0x30>
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29 4c: e51b3008 ldr r3, [fp, #-8]
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30 50: e5d33000 ldrb r3, [r3]
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31 54: e1a00003 mov r0, r3
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32 58: ebfffffe bl 0 <_uart_putc>
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33 5c: e51b3008 ldr r3, [fp, #-8]
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34 60: e2833001 add r3, r3, #1
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35 64: e50b3008 str r3, [fp, #-8]
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36 68: e51b3008 ldr r3, [fp, #-8]
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37 6c: e5d33000 ldrb r3, [r3]
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38 70: e3530000 cmp r3, #0
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39 74: 1afffff4 bne 4c <_puts+0x14>
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40 78: e24bd004 sub sp, fp, #4
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41 7c: e8bd8800 pop {fp, pc}
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42
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43 00000080 <_putint>:
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44 80: e92d4800 push {fp, lr}
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45 84: e28db004 add fp, sp, #4
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46 88: e24dd018 sub sp, sp, #24
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47 8c: e50b0010 str r0, [fp, #-16]
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48 90: e50b1014 str r1, [fp, #-20] ; 0xffffffec
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49 94: e50b2018 str r2, [fp, #-24] ; 0xffffffe8
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50 98: e59f3078 ldr r3, [pc, #120] ; 118 <_putint+0x98>
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51 9c: e50b300c str r3, [fp, #-12]
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52 a0: e51b3010 ldr r3, [fp, #-16]
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53 a4: e3530000 cmp r3, #0
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54 a8: 0a000001 beq b4 <_putint+0x34>
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55 ac: e51b0010 ldr r0, [fp, #-16]
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56 b0: ebfffffe bl 38 <_puts>
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57 b4: e3a0301c mov r3, #28
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58 b8: e50b3008 str r3, [fp, #-8]
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59 bc: ea00000b b f0 <_putint+0x70>
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60 c0: e51b2014 ldr r2, [fp, #-20] ; 0xffffffec
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61 c4: e51b3008 ldr r3, [fp, #-8]
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62 c8: e1a03332 lsr r3, r2, r3
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63 cc: e203300f and r3, r3, #15
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64 d0: e51b200c ldr r2, [fp, #-12]
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65 d4: e0823003 add r3, r2, r3
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66 d8: e5d33000 ldrb r3, [r3]
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67 dc: e1a00003 mov r0, r3
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68 e0: ebfffffe bl 0 <_uart_putc>
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69 e4: e51b3008 ldr r3, [fp, #-8]
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70 e8: e2433004 sub r3, r3, #4
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71 ec: e50b3008 str r3, [fp, #-8]
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72 f0: e51b3008 ldr r3, [fp, #-8]
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73 f4: e3530000 cmp r3, #0
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74 f8: aafffff0 bge c0 <_putint+0x40>
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75 fc: e51b3018 ldr r3, [fp, #-24] ; 0xffffffe8
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76 100: e3530000 cmp r3, #0
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77 104: 0a000001 beq 110 <_putint+0x90>
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78 108: e51b0018 ldr r0, [fp, #-24] ; 0xffffffe8
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79 10c: ebfffffe bl 38 <_puts>
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80 110: e24bd004 sub sp, fp, #4
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81 114: e8bd8800 pop {fp, pc}
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82 118: 00000000 .word 0x00000000
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83
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84 0000011c <get_pde>:
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85 11c: e52db004 push {fp} ; (str fp, [sp, #-4]!)
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86 120: e28db000 add fp, sp, #0
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87 124: e24dd00c sub sp, sp, #12
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88 128: e50b0008 str r0, [fp, #-8]
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89 12c: e51b3008 ldr r3, [fp, #-8]
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90 130: e1a03a23 lsr r3, r3, #20
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91 134: e50b3008 str r3, [fp, #-8]
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92 138: e59f3020 ldr r3, [pc, #32] ; 160 <get_pde+0x44>
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93 13c: e5932000 ldr r2, [r3]
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94 140: e51b3008 ldr r3, [fp, #-8]
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95 144: e1a03103 lsl r3, r3, #2
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96 148: e0823003 add r3, r2, r3
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97 14c: e5933000 ldr r3, [r3]
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98 150: e1a00003 mov r0, r3
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99 154: e24bd000 sub sp, fp, #0
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100 158: e49db004 pop {fp} ; (ldr fp, [sp], #4)
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101 15c: e12fff1e bx lr
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102 160: 00000000 .word 0x00000000
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103
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104 00000164 <set_bootpgtbl>:
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105 164: e52db004 push {fp} ; (str fp, [sp, #-4]!)
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106 168: e28db000 add fp, sp, #0
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107 16c: e24dd01c sub sp, sp, #28
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108 170: e50b0010 str r0, [fp, #-16]
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109 174: e50b1014 str r1, [fp, #-20] ; 0xffffffec
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110 178: e50b2018 str r2, [fp, #-24] ; 0xffffffe8
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111 17c: e50b301c str r3, [fp, #-28] ; 0xffffffe4
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112 180: e51b3010 ldr r3, [fp, #-16]
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113 184: e1a03a23 lsr r3, r3, #20
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114 188: e50b3010 str r3, [fp, #-16]
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115 18c: e51b3014 ldr r3, [fp, #-20] ; 0xffffffec
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116 190: e1a03a23 lsr r3, r3, #20
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117 194: e50b3014 str r3, [fp, #-20] ; 0xffffffec
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118 198: e51b3018 ldr r3, [fp, #-24] ; 0xffffffe8
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119 19c: e1a03a23 lsr r3, r3, #20
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120 1a0: e50b3018 str r3, [fp, #-24] ; 0xffffffe8
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121 1a4: e3a03000 mov r3, #0
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122 1a8: e50b300c str r3, [fp, #-12]
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123 1ac: ea000029 b 258 <set_bootpgtbl+0xf4>
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124 1b0: e51b3014 ldr r3, [fp, #-20] ; 0xffffffec
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125 1b4: e1a03a03 lsl r3, r3, #20
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126 1b8: e50b3008 str r3, [fp, #-8]
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127 1bc: e51b301c ldr r3, [fp, #-28] ; 0xffffffe4
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128 1c0: e3530000 cmp r3, #0
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129 1c4: 1a000004 bne 1dc <set_bootpgtbl+0x78>
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130 1c8: e51b3008 ldr r3, [fp, #-8]
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131 1cc: e3833b01 orr r3, r3, #1024 ; 0x400
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132 1d0: e383300e orr r3, r3, #14
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133 1d4: e50b3008 str r3, [fp, #-8]
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134 1d8: ea000003 b 1ec <set_bootpgtbl+0x88>
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135 1dc: e51b3008 ldr r3, [fp, #-8]
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136 1e0: e3833b01 orr r3, r3, #1024 ; 0x400
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137 1e4: e3833002 orr r3, r3, #2
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138 1e8: e50b3008 str r3, [fp, #-8]
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139 1ec: e51b3010 ldr r3, [fp, #-16]
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140 1f0: e35300ff cmp r3, #255 ; 0xff
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141 1f4: 8a000007 bhi 218 <set_bootpgtbl+0xb4>
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142 1f8: e59f3074 ldr r3, [pc, #116] ; 274 <set_bootpgtbl+0x110>
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143 1fc: e5932000 ldr r2, [r3]
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144 200: e51b3010 ldr r3, [fp, #-16]
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145 204: e1a03103 lsl r3, r3, #2
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146 208: e0823003 add r3, r2, r3
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147 20c: e51b2008 ldr r2, [fp, #-8]
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148 210: e5832000 str r2, [r3]
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149 214: ea000006 b 234 <set_bootpgtbl+0xd0>
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150 218: e59f3058 ldr r3, [pc, #88] ; 278 <set_bootpgtbl+0x114>
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151 21c: e5932000 ldr r2, [r3]
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152 220: e51b3010 ldr r3, [fp, #-16]
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153 224: e1a03103 lsl r3, r3, #2
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154 228: e0823003 add r3, r2, r3
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155 22c: e51b2008 ldr r2, [fp, #-8]
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156 230: e5832000 str r2, [r3]
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157 234: e51b3010 ldr r3, [fp, #-16]
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158 238: e2833001 add r3, r3, #1
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159 23c: e50b3010 str r3, [fp, #-16]
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160 240: e51b3014 ldr r3, [fp, #-20] ; 0xffffffec
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161 244: e2833001 add r3, r3, #1
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162 248: e50b3014 str r3, [fp, #-20] ; 0xffffffec
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163 24c: e51b300c ldr r3, [fp, #-12]
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164 250: e2833001 add r3, r3, #1
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165 254: e50b300c str r3, [fp, #-12]
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166 258: e51b200c ldr r2, [fp, #-12]
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167 25c: e51b3018 ldr r3, [fp, #-24] ; 0xffffffe8
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168 260: e1520003 cmp r2, r3
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169 264: 3affffd1 bcc 1b0 <set_bootpgtbl+0x4c>
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170 268: e24bd000 sub sp, fp, #0
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171 26c: e49db004 pop {fp} ; (ldr fp, [sp], #4)
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172 270: e12fff1e bx lr
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173 ...
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174
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175 0000027c <_flush_all>:
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176 27c: e52db004 push {fp} ; (str fp, [sp, #-4]!)
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177 280: e28db000 add fp, sp, #0
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178 284: e24dd00c sub sp, sp, #12
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179 288: e3a03000 mov r3, #0
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180 28c: e50b3008 str r3, [fp, #-8]
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181 290: e51b3008 ldr r3, [fp, #-8]
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182 294: ee083f17 mcr 15, 0, r3, cr8, cr7, {0}
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183 298: e24bd000 sub sp, fp, #0
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184 29c: e49db004 pop {fp} ; (ldr fp, [sp], #4)
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185 2a0: e12fff1e bx lr
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186
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187 000002a4 <load_pgtlb>:
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188 2a4: e92d4800 push {fp, lr}
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189 2a8: e28db004 add fp, sp, #4
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190 2ac: e24dd018 sub sp, sp, #24
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191 2b0: e50b0018 str r0, [fp, #-24] ; 0xffffffe8
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192 2b4: e50b101c str r1, [fp, #-28] ; 0xffffffe4
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193 2b8: ee103f10 mrc 15, 0, r3, cr0, cr0, {0}
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194 2bc: e50b3008 str r3, [fp, #-8]
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195 2c0: e51b3008 ldr r3, [fp, #-8]
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196 2c4: e1a03823 lsr r3, r3, #16
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197 2c8: e6ef3073 uxtb r3, r3
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198 2cc: e203300f and r3, r3, #15
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199 2d0: e54b3009 strb r3, [fp, #-9]
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200 2d4: e55b3009 ldrb r3, [fp, #-9]
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201 2d8: e3530007 cmp r3, #7
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202 2dc: 0a000004 beq 2f4 <load_pgtlb+0x50>
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203 2e0: e55b3009 ldrb r3, [fp, #-9]
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204 2e4: e353000f cmp r3, #15
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205 2e8: 0a000001 beq 2f4 <load_pgtlb+0x50>
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206 2ec: e59f0070 ldr r0, [pc, #112] ; 364 <load_pgtlb+0xc0>
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207 2f0: ebfffffe bl 38 <_puts>
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208 2f4: e59f306c ldr r3, [pc, #108] ; 368 <load_pgtlb+0xc4>
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209 2f8: e50b3010 str r3, [fp, #-16]
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210 2fc: e51b3010 ldr r3, [fp, #-16]
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211 300: ee033f10 mcr 15, 0, r3, cr3, cr0, {0}
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212 304: e3a03004 mov r3, #4
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213 308: e50b3010 str r3, [fp, #-16]
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214 30c: e51b3010 ldr r3, [fp, #-16]
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215 310: ee023f50 mcr 15, 0, r3, cr2, cr0, {2}
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216 314: e59f3050 ldr r3, [pc, #80] ; 36c <load_pgtlb+0xc8>
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217 318: e5933000 ldr r3, [r3]
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218 31c: e50b3010 str r3, [fp, #-16]
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219 320: e51b3010 ldr r3, [fp, #-16]
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220 324: ee023f30 mcr 15, 0, r3, cr2, cr0, {1}
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221 328: e51b301c ldr r3, [fp, #-28] ; 0xffffffe4
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222 32c: e50b3010 str r3, [fp, #-16]
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223 330: e51b3010 ldr r3, [fp, #-16]
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224 334: ee023f10 mcr 15, 0, r3, cr2, cr0, {0}
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225 338: ee113f10 mrc 15, 0, r3, cr1, cr0, {0}
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226 33c: e50b3010 str r3, [fp, #-16]
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227 340: e51b2010 ldr r2, [fp, #-16]
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228 344: e59f3024 ldr r3, [pc, #36] ; 370 <load_pgtlb+0xcc>
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229 348: e1823003 orr r3, r2, r3
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230 34c: e50b3010 str r3, [fp, #-16]
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231 350: e51b3010 ldr r3, [fp, #-16]
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232 354: ee013f10 mcr 15, 0, r3, cr1, cr0, {0}
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233 358: ebffffc7 bl 27c <_flush_all>
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234 35c: e24bd004 sub sp, fp, #4
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235 360: e8bd8800 pop {fp, pc}
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236 364: 00000014 .word 0x00000014
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237 368: 55555555 .word 0x55555555
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238 36c: 00000000 .word 0x00000000
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239 370: 0080300d .word 0x0080300d
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240
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241 00000374 <clear_bss>:
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242 374: e92d4800 push {fp, lr}
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243 378: e28db004 add fp, sp, #4
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244 37c: e59f2018 ldr r2, [pc, #24] ; 39c <clear_bss+0x28>
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245 380: e59f3018 ldr r3, [pc, #24] ; 3a0 <clear_bss+0x2c>
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246 384: e0633002 rsb r3, r3, r2
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247 388: e59f0010 ldr r0, [pc, #16] ; 3a0 <clear_bss+0x2c>
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248 38c: e3a01000 mov r1, #0
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249 390: e1a02003 mov r2, r3
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250 394: ebfffffe bl 0 <memset>
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251 398: e8bd8800 pop {fp, pc}
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252 ...
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253
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254 000003a4 <start>:
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255 3a4: e92d4800 push {fp, lr}
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256 3a8: e28db004 add fp, sp, #4
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257 3ac: e24dd008 sub sp, sp, #8
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258 3b0: e59f00a0 ldr r0, [pc, #160] ; 458 <start+0xb4>
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259 3b4: ebfffffe bl 38 <_puts>
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260 3b8: e3a00000 mov r0, #0
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261 3bc: e3a01000 mov r1, #0
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262 3c0: e3a02601 mov r2, #1048576 ; 0x100000
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263 3c4: e3a03000 mov r3, #0
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264 3c8: ebfffffe bl 164 <set_bootpgtbl>
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265 3cc: e3a00102 mov r0, #-2147483648 ; 0x80000000
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266 3d0: e3a01000 mov r1, #0
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267 3d4: e3a02601 mov r2, #1048576 ; 0x100000
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268 3d8: e3a03000 mov r3, #0
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269 3dc: ebfffffe bl 164 <set_bootpgtbl>
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270 3e0: e59f3074 ldr r3, [pc, #116] ; 45c <start+0xb8>
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271 3e4: e50b3008 str r3, [fp, #-8]
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272 3e8: e59f3070 ldr r3, [pc, #112] ; 460 <start+0xbc>
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273 3ec: e51b2008 ldr r2, [fp, #-8]
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274 3f0: e1520003 cmp r2, r3
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275 3f4: 8a000001 bhi 400 <start+0x5c>
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276 3f8: e59f0064 ldr r0, [pc, #100] ; 464 <start+0xc0>
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277 3fc: ebfffffe bl 0 <cprintf>
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278 400: e59f0060 ldr r0, [pc, #96] ; 468 <start+0xc4>
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279 404: e3a01000 mov r1, #0
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280 408: e3a02601 mov r2, #1048576 ; 0x100000
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281 40c: e3a03000 mov r3, #0
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282 410: ebfffffe bl 164 <set_bootpgtbl>
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283 414: e3a00209 mov r0, #-1879048192 ; 0x90000000
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284 418: e3a01201 mov r1, #268435456 ; 0x10000000
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285 41c: e3a02302 mov r2, #134217728 ; 0x8000000
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286 420: e3a03001 mov r3, #1
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287 424: ebfffffe bl 164 <set_bootpgtbl>
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288 428: e59f303c ldr r3, [pc, #60] ; 46c <start+0xc8>
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289 42c: e5932000 ldr r2, [r3]
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290 430: e59f3038 ldr r3, [pc, #56] ; 470 <start+0xcc>
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291 434: e5933000 ldr r3, [r3]
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292 438: e1a00002 mov r0, r2
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293 43c: e1a01003 mov r1, r3
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294 440: ebfffffe bl 2a4 <load_pgtlb>
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295 444: ebfffffe bl 0 <jump_stack>
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296 448: ebfffffe bl 374 <clear_bss>
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297 44c: ebfffffe bl 0 <kmain>
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298 450: e24bd004 sub sp, fp, #4
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299 454: e8bd8800 pop {fp, pc}
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300 458: 0000002c .word 0x0000002c
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301 45c: 800f0000 .word 0x800f0000
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302 460: 00000000 .word 0x00000000
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303 464: 00000048 .word 0x00000048
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304 468: ffff0000 .word 0xffff0000
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305 ...
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