Home | History | Annotate | Line # | Download | only in gdbscripts 
      1 
      2 # Copyright (c)2011,2013 YAMAMOTO Takashi,
      3 # All rights reserved.
      4 #
      5 # Redistribution and use in source and binary forms, with or without
      6 # modification, are permitted provided that the following conditions
      7 # are met:
      8 # 1. Redistributions of source code must retain the above copyright
      9 #    notice, this list of conditions and the following disclaimer.
     10 # 2. Redistributions in binary form must reproduce the above copyright
     11 #    notice, this list of conditions and the following disclaimer in the
     12 #    documentation and/or other materials provided with the distribution.
     13 #
     14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     15 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     17 # ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     18 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     19 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     20 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     21 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     22 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     23 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     24 # SUCH DAMAGE.
     25 
     26 # a macro to dump kernel modules
     27 
     28 # printed addresses can be used for gdb add-symbol-file command.
     29 #
     30 # for example:
     31 #
     32 # % objdump -h puffs.kmod
     33 #     :
     34 #     :
     35 #     :
     36 # Sections:
     37 # Idx Name          Size      VMA               LMA               File off  Algn
     38 #   0 .text         0000c87c  0000000000000000  0000000000000000  00000040  2**2
     39 #                   CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
     40 #     :
     41 #     :
     42 #     :
     43 # 
     44 # 
     45 # (gdb) target kvm /dev/mem
     46 # #0  0xffffffff804f14d4 in mi_switch (l=0xffffffff80dfa020)
     47 #     at /siro/nbsd/src/sys/kern/kern_synch.c:720
     48 # 720                     prevlwp = cpu_switchto(l, newl, returning);
     49 # (gdb) modules                                                                   module puffs    0xffffffff810c6000-0xffffffff810ffcd0
     50 # module wmimsi
     51 # module wmihp
     52 # module wmieeepc
     53 #     :
     54 #     :
     55 #     :
     56 # (gdb) add-symbol-file /siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod 0xffffffff810c6000+0x40
     57 # add symbol table from file "/siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod" at
     58 #         .text_addr = 0xffffffff810c6040
     59 # (y or n) y
     60 # Reading symbols from /siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod...done.
     61 # (gdb) disas puffs_getvnode
     62 # Dump of assembler code for function puffs_getvnode:   
     63 #    0xffffffff810c609a <+0>:     push   %rbp
     64 #    0xffffffff810c609b <+1>:     rorb   $0x45,-0x75(%rax)
     65 #    0xffffffff810c609f <+5>:     callq  0xffffffffc9dce9ed
     66 #    0xffffffff810c60a4 <+10>:    mov    $0x810d28a0,%ecx
     67 #    0xffffffff810c60aa <+16>:    mov    $0x16,%edx
     68 #    0xffffffff810c60af <+21>:    mov    $0x1,%esi
     69 
     70 define modules
     71 	set $h = module_list
     72 	set $e = $h.tqh_first
     73 	while ($e != 0)
     74 		if ($e->mod_kobj != 0)
     75 			printf "module %s\n\t  text=0x%016lx/%u\n\t  data=0x%016lx/%u\n\trodata=0x%016lx/%u\n", \
     76 			    $e->mod_info.mi_name, \
     77 			    $e->mod_kobj->ko_text_address, \
     78 			    $e->mod_kobj->ko_text_size, \
     79 			    $e->mod_kobj->ko_data_address, \
     80 			    $e->mod_kobj->ko_data_size, \
     81 			    $e->mod_kobj->ko_rodata_address, \
     82 			    $e->mod_kobj->ko_rodata_size
     83 		else
     84 			printf "module %s\n", \
     85 			    $e->mod_info.mi_name
     86 		end
     87 		set $e = $e->mod_chain.tqe_next
     88 	end
     89 end
     90