[Pkg-chromium-maint] Bug#632903: Chromium armel fixes
Timo Juhani Lindfors
timo.lindfors at iki.fi
Wed Jan 25 16:09:58 UTC 2012
Hi,
Riku Voipio <riku.voipio at iki.fi> writes:
> The following patch fixes building chromium on debian/armel and prepares
> the way for debian/armhf builds.
I tried your binaries from
http://people.debian.org/~riku/chromium/
on openmoko and marvel mv78100. I installed the -dbg package on mv78100
and saw the following. It seems we jump to an unmapped address:
Script started on Wed Jan 25 15:55:07 2012
(sid)mv78100:~$ chromium
Segmentation fault
(sid)mv78100:~$ chromium --debug
# Env:
# LD_LIBRARY_PATH=/usr/lib/chromium:/usr/lib/xulrunner-1.9.1
# PATH=/usr/lib/chromium:/home/lindi/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
# GTK_PATH=
# CHROMIUM_USER_FLAGS=
# CHROMIUM_FLAGS=--password-store=detect
/usr/bin/gdb /usr/lib/chromium/chromium -x /tmp/chromiumargs.haSxg0
GNU gdb (GDB) 7.3-debian
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/lib/chromium/chromium...Reading symbols from /usr/lib/debug/usr/lib/chromium/chromium...done.
done.
(gdb) r
Starting program: /usr/lib/chromium/chromium --password-store=detect
[Thread debugging using libthread_db enabled]
Program received signal SIGSEGV, Segmentation fault.
0x001abe08 in ?? ()
(gdb) bt
#0 0x001abe08 in ?? ()
#1 0x2c26c214 in __libc_csu_init ()
#2 0x4153b5f0 in __libc_start_main () from /lib/arm-linux-gnueabi/libc.so.6
#3 0x2a1b3934 in _start ()
(gdb) x/5i $pc
=> 0x1abe08: Cannot access memory at address 0x1abe08
(gdb) info register
r0 0x2 2
r1 0xbee95624 3202962980
r2 0xbee95630 3202962992
r3 0x41654b70 1097157488
r4 0x0 0
r5 0xfffed644 4294891076
r6 0x2 2
r7 0xbee95624 3202962980
r8 0xbee95630 3202962992
r9 0x0 0
r10 0xfffed374 4294890356
r11 0x0 0
r12 0xffff0fff 4294905855
sp 0xbee954b8 0xbee954b8
lr 0x2c26c214 740737556
pc 0x1abe08 0x1abe08
cpsr 0x20000010 536870928
(gdb) up
#1 0x2c26c214 in __libc_csu_init ()
(gdb) x/4i $pc
=> 0x2c26c214 <__libc_csu_init+28>: ldr r3, [pc, #72] ; 0x2c26c264 <__libc_csu_init+108>
0x2c26c218 <__libc_csu_init+32>: rsb r5, r10, r5
0x2c26c21c <__libc_csu_init+36>: add r3, pc, r3
0x2c26c220 <__libc_csu_init+40>: asrs r5, r5, #2
(gdb) x/16i $pc-8
0x2c26c20c <__libc_csu_init+20>: mov r8, r2
0x2c26c210 <__libc_csu_init+24>: bl 0x2c26c820
=> 0x2c26c214 <__libc_csu_init+28>: ldr r3, [pc, #72] ; 0x2c26c264 <__libc_csu_init+108>
0x2c26c218 <__libc_csu_init+32>: rsb r5, r10, r5
0x2c26c21c <__libc_csu_init+36>: add r3, pc, r3
0x2c26c220 <__libc_csu_init+40>: asrs r5, r5, #2
0x2c26c224 <__libc_csu_init+44>: add r10, r3, r10
0x2c26c228 <__libc_csu_init+48>: beq 0x2c26c254 <__libc_csu_init+92>
0x2c26c22c <__libc_csu_init+52>: mov r4, #0
0x2c26c230 <__libc_csu_init+56>: mov r0, r6
0x2c26c234 <__libc_csu_init+60>: mov r1, r7
0x2c26c238 <__libc_csu_init+64>: mov r2, r8
0x2c26c23c <__libc_csu_init+68>: ldr r12, [r10, r4, lsl #2]
0x2c26c240 <__libc_csu_init+72>: mov lr, pc
0x2c26c244 <__libc_csu_init+76>: bx r12
0x2c26c248 <__libc_csu_init+80>: add r4, r4, #1
(gdb) break *0x2c26c20c
Breakpoint 1 at 0x2c26c20c
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/lib/chromium/chromium --password-store=detect
[Thread debugging using libthread_db enabled]
Breakpoint 1, 0x2c26c20c in __libc_csu_init ()
(gdb) define xsi
Type commands for definition of "xsi".
End with a line saying just "end".
>si
>x/4i $pc
>end
(gdb) xsi
0x2c26c210 in __libc_csu_init ()
=> 0x2c26c210 <__libc_csu_init+24>: bl 0x2c26c820
0x2c26c214 <__libc_csu_init+28>: ldr r3, [pc, #72] ; 0x2c26c264 <__libc_csu_init+108>
0x2c26c218 <__libc_csu_init+32>: rsb r5, r10, r5
0x2c26c21c <__libc_csu_init+36>: add r3, pc, r3
(gdb)
Cannot access memory at address 0x0
0x2c26c820 in ?? ()
=> 0x2c26c820: ldr pc, [pc, #-4] ; 0x2c26c824
0x2c26c824: andseq r11, r10, r8, lsl #28
0x2c26c828: ldr pc, [pc, #-4] ; 0x2c26c82c
0x2c26c82c: andseq pc, r10, r8, ror #17
(gdb) x/10i $pc-8
0x2c26c818: ldr pc, [pc, #-4] ; 0x2c26c81c
0x2c26c81c: andseq r12, r10, r8, lsr #4
=> 0x2c26c820: ldr pc, [pc, #-4] ; 0x2c26c824
0x2c26c824: andseq r11, r10, r8, lsl #28
0x2c26c828: ldr pc, [pc, #-4] ; 0x2c26c82c
0x2c26c82c: andseq pc, r10, r8, ror #17
0x2c26c830: ldr pc, [pc, #-4] ; 0x2c26c834
0x2c26c834: andseq pc, r10, r8, asr #15
0x2c26c838 <_fini>: push {r4, lr}
0x2c26c83c <_fini+4>: pop {r4, lr}
(gdb) xsi
0x2c26c820 in ?? ()
Could not insert single-step breakpoint at 0x1abe08
(gdb) x/4 0x2c26c820-4
0x2c26c81c: 0x1ac228 0xe51ff004 0x1abe08 0xe51ff004
(gdb) quit
A debugging session is active.
Inferior 1 [process 12087] will be killed.
Quit anyway? (y or n) y
(sid)mv78100:~$ exit
exit
Script done on Wed Jan 25 16:07:17 2012
-Timo
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