boot1.map

某个ARM9板子的实际bootloader 对裁剪

There are 20 section headers, starting at offset 0xa618:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0   0  0
  [ 1] .rom_vectors      PROGBITS        00000000 008000 000040 00  AX  0   0  1
  [ 2] .text             PROGBITS        00000040 008040 0006e0 00  AX  0   0 32
  [ 3] .fini             PROGBITS        00000720 008720 000000 00   W  0   0  1
  [ 4] .rodata           PROGBITS        00000720 008720 000000 00   W  0   0  1
  [ 5] .fixup            PROGBITS        00000720 008720 000000 00   W  0   0  1
  [ 6] .data             PROGBITS        00002000 008720 000000 00   W  0   0  1
  [ 7] .bss              NOBITS          00002000 008720 01a00c 00  WA  0   0 16384
  [ 8] .debug_line       PROGBITS        00000000 008720 00047e 00      0   0  1
  [ 9] .debug_info       PROGBITS        00000000 008b9e 000a98 00      0   0  1
  [10] .debug_abbrev     PROGBITS        00000000 009636 000382 00      0   0  1
  [11] .debug_aranges    PROGBITS        00000000 0099b8 000160 00      0   0  8
  [12] .debug_frame      PROGBITS        00000000 009b18 000234 00      0   0  4
  [13] .debug_pubnames   PROGBITS        00000000 009d4c 0002a9 00      0   0  1
  [14] .debug_str        PROGBITS        00000000 009ff5 000448 01  MS  0   0  1
  [15] .comment          PROGBITS        00000000 00a43d 000036 00      0   0  1
  [16] .debug_ranges     PROGBITS        00000000 00a473 0000e0 00      0   0  1
  [17] .shstrtab         STRTAB          00000000 00a553 0000c2 00      0   0  1
  [18] .symtab           SYMTAB          00000000 00a938 000680 10     19  79  4
  [19] .strtab           STRTAB          00000000 00afb8 000376 00      0   0  1
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings)
  I (info), L (link order), G (group), x (unknown)
  O (extra OS processing required) o (OS specific), p (processor specific)

Symbol table '.symtab' contains 104 entries:
   Num:    Value  Size Type    Bind   Vis      Ndx Name
     0: 00000000     0 NOTYPE  LOCAL  DEFAULT  UND 
     1: 00000000     0 SECTION LOCAL  DEFAULT    1 
     2: 00000040     0 SECTION LOCAL  DEFAULT    2 
     3: 00000720     0 SECTION LOCAL  DEFAULT    3 
     4: 00000720     0 SECTION LOCAL  DEFAULT    4 
     5: 00000720     0 SECTION LOCAL  DEFAULT    5 
     6: 00002000     0 SECTION LOCAL  DEFAULT    6 
     7: 00002000     0 SECTION LOCAL  DEFAULT    7 
     8: 00000000     0 SECTION LOCAL  DEFAULT    8 
     9: 00000000     0 SECTION LOCAL  DEFAULT    9 
    10: 00000000     0 SECTION LOCAL  DEFAULT   10 
    11: 00000000     0 SECTION LOCAL  DEFAULT   11 
    12: 00000000     0 SECTION LOCAL  DEFAULT   12 
    13: 00000000     0 SECTION LOCAL  DEFAULT   13 
    14: 00000000     0 SECTION LOCAL  DEFAULT   14 
    15: 00000000     0 SECTION LOCAL  DEFAULT   15 
    16: 00000000     0 SECTION LOCAL  DEFAULT   16 
    17: 00000000     0 SECTION LOCAL  DEFAULT   17 
    18: 00000000     0 SECTION LOCAL  DEFAULT   18 
    19: 00000000     0 SECTION LOCAL  DEFAULT   19 
    20: 00000000     0 FILE    LOCAL  DEFAULT  ABS sys_start.S
    21: 00000000     0 FILE    LOCAL  DEFAULT  ABS start.S
    22: 00000040     0 NOTYPE  LOCAL  DEFAULT    2 NFLASH_TYPE
    23: 00000040     0 OBJECT  LOCAL  DEFAULT    2 $d
    24: 00000044     0 NOTYPE  LOCAL  DEFAULT    2 page_1
    25: 00000048     0 NOTYPE  LOCAL  DEFAULT    2 page_4
    26: 0000004c     0 NOTYPE  LOCAL  DEFAULT    2 reg_glo
    27: 00000050     0 FUNC    LOCAL  DEFAULT    2 $a
    28: 00000000     0 FUNC    LOCAL  DEFAULT    1 $a
    29: 00000024     0 NOTYPE  LOCAL  DEFAULT    1 .undefined_instruction
    30: 00000028     0 NOTYPE  LOCAL  DEFAULT    1 .software_interrupt
    31: 0000002c     0 NOTYPE  LOCAL  DEFAULT    1 .abort_prefetch
    32: 00000030     0 NOTYPE  LOCAL  DEFAULT    1 .abort_data
    33: 00000038     0 NOTYPE  LOCAL  DEFAULT    1 .IRQ
    34: 0000003c     0 NOTYPE  LOCAL  DEFAULT    1 .FIQ
    35: 00000020     0 NOTYPE  LOCAL  DEFAULT    1 .reset_vector
    36: 00000020     0 OBJECT  LOCAL  DEFAULT    1 $d
    37: 00000090     0 NOTYPE  LOCAL  DEFAULT    2 nserial
    38: 000000e0     0 NOTYPE  LOCAL  DEFAULT    2 P_FLASH
    39: 000000bc     0 NOTYPE  LOCAL  DEFAULT    2 n512p
    40: 000000c0     0 NOTYPE  LOCAL  DEFAULT    2 n512_p
    41: 00000118     0 NOTYPE  LOCAL  DEFAULT    2 DRAM_16
    42: 00000130     0 NOTYPE  LOCAL  DEFAULT    2 DRAM_ok
    43: 00000154     0 NOTYPE  LOCAL  DEFAULT    2 END_PREFETCH
    44: 00000200     0 NOTYPE  LOCAL  DEFAULT    2 n2k
    45: 00000228     0 NOTYPE  LOCAL  DEFAULT    2 n512
    46: 00000250     0 NOTYPE  LOCAL  DEFAULT    2 flash_page
    47: 00000204     0 NOTYPE  LOCAL  DEFAULT    2 n2k_page
    48: 000002a8     0 NOTYPE  LOCAL  DEFAULT    2 wr_ok
    49: 0000022c     0 NOTYPE  LOCAL  DEFAULT    2 n512_page
    50: 00000270     0 NOTYPE  LOCAL  DEFAULT    2 nserial1
    51: 00000274     0 NOTYPE  LOCAL  DEFAULT    2 nserial2
    52: 000002ec     0 NOTYPE  LOCAL  DEFAULT    2 nserial3
    53: 000002f0     0 NOTYPE  LOCAL  DEFAULT    2 nserial4
    54: 00000318     0 NOTYPE  LOCAL  DEFAULT    2 warm_reset
    55: 00000484     0 NOTYPE  LOCAL  DEFAULT    2 .__rom_data_start
    56: 00000488     0 NOTYPE  LOCAL  DEFAULT    2 .__ram_data_start
    57: 0000048c     0 NOTYPE  LOCAL  DEFAULT    2 .__ram_data_end
    58: 00000470     0 NOTYPE  LOCAL  DEFAULT    2 .__startup_stack
    59: 00000474     0 NOTYPE  LOCAL  DEFAULT    2 .__exception_stack
    60: 00000478     0 NOTYPE  LOCAL  DEFAULT    2 .__bss_start
    61: 0000047c     0 NOTYPE  LOCAL  DEFAULT    2 .__bss_end
    62: 0000040c     0 NOTYPE  LOCAL  DEFAULT    2 _here
    63: 00000470     0 OBJECT  LOCAL  DEFAULT    2 $d
    64: 00019400     0 NOTYPE  LOCAL  DEFAULT    7 __startup_stack
    65: 00018400     0 NOTYPE  LOCAL  DEFAULT    7 __exception_stack
    66: 00000480     0 NOTYPE  LOCAL  DEFAULT    2 ._end
    67: 00000490     0 NOTYPE  LOCAL  DEFAULT    2 .__exception_handlers
    68: 00008000     0 OBJECT  LOCAL  DEFAULT    7 $d
    69: 00018000     0 NOTYPE  LOCAL  DEFAULT    7 __exception_stack_base
    70: 00018400     0 NOTYPE  LOCAL  DEFAULT    7 __startup_stack_base
    71: 00000000     0 FILE    LOCAL  DEFAULT  ABS boot_main.c
    72: 00000500     0 FUNC    LOCAL  DEFAULT    2 $a
    73: 00000000     0 FILE    LOCAL  DEFAULT  ABS hal_sl2312.c
    74: 00000638     0 FUNC    LOCAL  DEFAULT    2 $a
    75: 00000650     0 FUNC    LOCAL  DEFAULT    2 $a
    76: 000006b8     0 OBJECT  LOCAL  DEFAULT    2 $d
    77: 000006c0     0 FUNC    LOCAL  DEFAULT    2 $a
    78: 00000000     0 FILE    LOCAL  DEFAULT  ABS hal_cache.c
    79: 00000418     0 NOTYPE  GLOBAL DEFAULT    2 abort_data
    80: 00000418     0 NOTYPE  GLOBAL DEFAULT    2 abort_prefetch
    81: 0001c000     8 OBJECT  GLOBAL DEFAULT    7 sys_ticks
    82: 00000410     0 FUNC    GLOBAL DEFAULT    2 reset_platform
    83: 0001c00c     0 NOTYPE  GLOBAL DEFAULT  ABS __bss_end
    84: 00002000     0 NOTYPE  GLOBAL DEFAULT  ABS __ram_data_end
    85: 00002000     0 NOTYPE  GLOBAL DEFAULT    6 __rom_data_start
    86: 00000050     0 FUNC    GLOBAL DEFAULT    2 reset_vector
    87: 0001c008     4 OBJECT  GLOBAL DEFAULT    7 emac_isr_handler
    88: 00000500   312 FUNC    GLOBAL DEFAULT    2 sl_main
    89: 00000638    24 FUNC    GLOBAL DEFAULT    2 hal_interrupt_acknowledge
    90: 000006c0    96 FUNC    GLOBAL DEFAULT    2 hal_reset
    91: 00000000     0 NOTYPE  GLOBAL DEFAULT    1 __exception_handlers
    92: 00000420     0 NOTYPE  GLOBAL DEFAULT    2 IRQ
    93: 00002000     0 NOTYPE  GLOBAL DEFAULT  ABS __bss_start
    94: 00000418     0 NOTYPE  GLOBAL DEFAULT    2 software_interrupt
    95: 0001c020     0 NOTYPE  GLOBAL DEFAULT  ABS __heap1
    96: 00000418     0 NOTYPE  GLOBAL DEFAULT    2 FIQ
    97: 00000418     0 NOTYPE  GLOBAL DEFAULT    2 undefined_instruction
    98: 00002000     0 NOTYPE  GLOBAL DEFAULT  ABS __ram_data_start
    99: 00002000     0 NOTYPE  GLOBAL DEFAULT  ABS _edata
   100: 0001c00c     0 NOTYPE  GLOBAL DEFAULT  ABS _end
   101: 00008000     0 NOTYPE  GLOBAL DEFAULT    7 ttb_base
   102: 00000650   112 FUNC    GLOBAL DEFAULT    2 hal_irq_handler
   103: 00000020     0 NOTYPE  GLOBAL DEFAULT    1 vectors