xref: /src/sys/gdbscripts/module

# 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