# Copyright (c)2011,2013 YAMAMOTO Takashi, # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # a macro to dump kernel modules # printed addresses can be used for gdb add-symbol-file command. # # for example: # # % objdump -h puffs.kmod # : # : # : # Sections: # Idx Name Size VMA LMA File off Algn # 0 .text 0000c87c 0000000000000000 0000000000000000 00000040 2**2 # CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE # : # : # : # # # (gdb) target kvm /dev/mem # #0 0xffffffff804f14d4 in mi_switch (l=0xffffffff80dfa020) # at /siro/nbsd/src/sys/kern/kern_synch.c:720 # 720 prevlwp = cpu_switchto(l, newl, returning); # (gdb) modules module puffs 0xffffffff810c6000-0xffffffff810ffcd0 # module wmimsi # module wmihp # module wmieeepc # : # : # : # (gdb) add-symbol-file /siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod 0xffffffff810c6000+0x40 # add symbol table from file "/siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod" at # .text_addr = 0xffffffff810c6040 # (y or n) y # Reading symbols from /siro/nbsd/src/sys/modules/puffs/obj/puffs.kmod...done. # (gdb) disas puffs_getvnode # Dump of assembler code for function puffs_getvnode: # 0xffffffff810c609a <+0>: push %rbp # 0xffffffff810c609b <+1>: rorb $0x45,-0x75(%rax) # 0xffffffff810c609f <+5>: callq 0xffffffffc9dce9ed # 0xffffffff810c60a4 <+10>: mov $0x810d28a0,%ecx # 0xffffffff810c60aa <+16>: mov $0x16,%edx # 0xffffffff810c60af <+21>: mov $0x1,%esi define modules set $h = module_list set $e = $h.tqh_first while ($e != 0) if ($e->mod_kobj != 0) printf "module %s\n\t text=0x%016lx/%u\n\t data=0x%016lx/%u\n\trodata=0x%016lx/%u\n", \ $e->mod_info.mi_name, \ $e->mod_kobj->ko_text_address, \ $e->mod_kobj->ko_text_size, \ $e->mod_kobj->ko_data_address, \ $e->mod_kobj->ko_data_size, \ $e->mod_kobj->ko_rodata_address, \ $e->mod_kobj->ko_rodata_size else printf "module %s\n", \ $e->mod_info.mi_name end set $e = $e->mod_chain.tqe_next end end