On Tue, 2008-09-16 at 23:15 +0200, Johannes Berg wrote:
> On Tue, 2008-09-16 at 23:11 +0200, Johannes Berg wrote:
>
> > > 83 for (cmd = &__start___cmd; cmd < &__stop___cmd; cmd++) {
> > > (gdb) p __start___cmd
> > > $1 = {section = 0x0, name = 0x403d02 "info", args = 0x0, cmd = NL80211_CMD_GET_WIPHY,
> > > nl_msg_flags = 0, idby = CIB_PHY, handler = 0x402403 <handle_info>}
> > > (gdb) p *(&__start___cmd + 1)
> > > $2 = {section = 0x0, name = 0x0, args = 0x0, cmd = 4209927, nl_msg_flags = 0, idby = CIB_NONE,
> > > handler = 0x30000000001}
> > > (gdb)
> > >
> > > That means, __start___cmd points to "info". The next command has no
> > > name (and appears to be a complete mess). The clever section trick
> > > doesn't seem to work properly.
>
> Hmm. can you send the output of
>
> nm iw | grep __cmd
I recompiled iw with optimization, so the addresses may be different.
$ nm iw | grep __cmd
0000000000403d40 r __cmd_handle_infoNL80211_CMD_GET_WIPHYCIB_NONE
0000000000403d80 r __cmd_handle_infoNL80211_CMD_GET_WIPHYCIB_PHY
0000000000403f00 r __cmd_handle_interface_addNL80211_CMD_NEW_INTERFACECIB_NETDEV
0000000000403f40 r __cmd_handle_interface_addNL80211_CMD_NEW_INTERFACECIB_PHY
0000000000403ec0 r __cmd_handle_interface_delNL80211_CMD_DEL_INTERFACECIB_NETDEV
0000000000403e80 r __cmd_handle_interface_infoNL80211_CMD_GET_INTERFACECIB_NETDEV
0000000000403e00 r __cmd_handle_interface_meshidNL80211_CMD_SET_INTERFACECIB_NETDEV
0000000000403e40 r __cmd_handle_interface_setNL80211_CMD_SET_INTERFACECIB_NETDEV
0000000000404080 r __cmd_handle_mpath_dumpNL80211_CMD_GET_MPATHCIB_NETDEV
0000000000404140 r __cmd_handle_mpath_getNL80211_CMD_DEL_MPATHCIB_NETDEV
0000000000404180 r __cmd_handle_mpath_getNL80211_CMD_GET_MPATHCIB_NETDEV
0000000000404100 r __cmd_handle_mpath_setNL80211_CMD_NEW_MPATHCIB_NETDEV
00000000004040c0 r __cmd_handle_mpath_setNL80211_CMD_SET_MPATHCIB_NETDEV
0000000000403dc0 r __cmd_handle_nameNL80211_CMD_SET_WIPHYCIB_PHY
00000000004041c0 r __cmd_handle_reg_setNL80211_CMD_REQ_SET_REGCIB_NONE
0000000000403f80 r __cmd_handle_station_dumpNL80211_CMD_GET_STATIONCIB_NETDEV
0000000000404000 r __cmd_handle_station_getNL80211_CMD_DEL_STATIONCIB_NETDEV
0000000000404040 r __cmd_handle_station_getNL80211_CMD_GET_STATIONCIB_NETDEV
0000000000403fc0 r __cmd_handle_station_setNL80211_CMD_SET_STATIONCIB_NETDEV
0000000000403d40 A __start___cmd
00000000004041f0 A __stop___cmd
> objdump -h iw
> (only the __cmd section part is fine)
15 __cmd 000004b0 0000000000403d40 0000000000403d40 00003d40 2**5
CONTENTS, ALLOC, LOAD, READONLY, DATA
> and
> objdump -j __cmd -s iw
$ objdump -j __cmd -s iw
iw: file format elf64-x86-64
Contents of section __cmd:
403d40 00000000 00000000 75384000 00000000 ........u8@.....
403d50 00000000 00000000 01000000 00030000 ................
403d60 00000000 00000000 c01d4000 00000000 ..........@.....
403d70 00000000 00000000 00000000 00000000 ................
403d80 00000000 00000000 7a384000 00000000 ........z8@.....
403d90 00000000 00000000 01000000 00000000 ................
403da0 01000000 00000000 c01d4000 00000000 ..........@.....
403db0 00000000 00000000 00000000 00000000 ................
403dc0 88384000 00000000 8c384000 00000000 .8@......8@.....
403dd0 91384000 00000000 02000000 00000000 .8@.............
403de0 01000000 00000000 50224000 00000000 ........P"@.....
403df0 00000000 00000000 00000000 00000000 ................
403e00 88384000 00000000 65394000 00000000 .8@.....e9@.....
403e10 6c394000 00000000 06000000 00000000 l9@.............
403e20 02000000 00000000 c0224000 00000000 ........."@.....
403e30 00000000 00000000 00000000 00000000 ................
403e40 88384000 00000000 ac384000 00000000 .8@......8@.....
403e50 75394000 00000000 06000000 00000000 u9@.............
403e60 02000000 00000000 a0264000 00000000 .........&@.....
403e70 00000000 00000000 00000000 00000000 ................
403e80 00000000 00000000 7a384000 00000000 ........z8@.....
403e90 00000000 00000000 05000000 00000000 ................
403ea0 02000000 00000000 c0254000 00000000 .........%@.....
403eb0 00000000 00000000 00000000 00000000 ................
403ec0 00000000 00000000 82394000 00000000 .........9@.....
403ed0 00000000 00000000 08000000 00000000 ................
403ee0 02000000 00000000 b0224000 00000000 ........."@.....
403ef0 00000000 00000000 00000000 00000000 ................
403f00 86394000 00000000 90394000 00000000 .9@......9@.....
403f10 98394000 00000000 07000000 00000000 .9@.............
403f20 02000000 00000000 20234000 00000000 ........ #@.....
403f30 00000000 00000000 00000000 00000000 ................
403f40 86394000 00000000 90394000 00000000 .9@......9@.....
403f50 98394000 00000000 07000000 00000000 .9@.............
403f60 01000000 00000000 20234000 00000000 ........ #@.....
403f70 00000000 00000000 00000000 00000000 ................
403f80 c3384000 00000000 933a4000 00000000 .8@......:@.....
403f90 00000000 00000000 11000000 00030000 ................
403fa0 02000000 00000000 e0284000 00000000 .........(@.....
403fb0 00000000 00000000 00000000 00000000 ................
403fc0 c3384000 00000000 88384000 00000000 .8@......8@.....
403fd0 d83a4000 00000000 12000000 00000000 .:@.............
403fe0 02000000 00000000 502c4000 00000000 ........P,@.....
403ff0 00000000 00000000 00000000 00000000 ................
404000 c3384000 00000000 82394000 00000000 .8@......9@.....
404010 983a4000 00000000 14000000 00000000 .:@.............
404020 02000000 00000000 20284000 00000000 ........ (@.....
404030 00000000 00000000 00000000 00000000 ................
404040 c3384000 00000000 a63a4000 00000000 .8@......:@.....
404050 983a4000 00000000 11000000 00000000 .:@.............
404060 02000000 00000000 20284000 00000000 ........ (@.....
404070 00000000 00000000 00000000 00000000 ................
404080 2e3c4000 00000000 933a4000 00000000 .<@......:@.....
404090 00000000 00000000 15000000 00030000 ................
4040a0 02000000 00000000 d02f4000 00000000 ........./@.....
4040b0 00000000 00000000 00000000 00000000 ................
4040c0 2e3c4000 00000000 88384000 00000000 .<@......8@.....
4040d0 603c4000 00000000 16000000 00000000 `<@.............
4040e0 02000000 00000000 20324000 00000000 ........ 2@.....
4040f0 00000000 00000000 00000000 00000000 ................
404100 2e3c4000 00000000 343c4000 00000000 .<@.....4<@.....
404110 603c4000 00000000 17000000 00000000 `<@.............
404120 02000000 00000000 20324000 00000000 ........ 2@.....
404130 00000000 00000000 00000000 00000000 ................
404140 2e3c4000 00000000 82394000 00000000 .<@......9@.....
404150 983a4000 00000000 18000000 00000000 .:@.............
404160 02000000 00000000 102f4000 00000000 ........./@.....
404170 00000000 00000000 00000000 00000000 ................
404180 2e3c4000 00000000 a63a4000 00000000 .<@......:@.....
404190 983a4000 00000000 15000000 00000000 .:@.............
4041a0 02000000 00000000 102f4000 00000000 ........./@.....
4041b0 00000000 00000000 00000000 00000000 ................
4041c0 0d3d4000 00000000 88384000 00000000 .=@......8@.....
4041d0 113d4000 00000000 1b000000 00000000 .=@.............
4041e0 00000000 00000000 80334000 00000000 .........3@.....
--
Regards,
Pavel Roskin
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