CC core dumping with CLANG 3.7 on armv5 - DREAMPLUG
Mattia Rossi
mattia.rossi.mailinglists at gmail.com
Thu Oct 22 12:41:00 UTC 2015
Am 22.10.2015 um 13:14 schrieb Konstantin Belousov:
> On Thu, Oct 22, 2015 at 11:47:28AM +0200, Mattia Rossi wrote:
>>> You may disassemble the instruction at the address, and print the content
>>> of registers:
>>> (gdb) disassemble *0x01eb0868-8,0x01eb0868+8
>>> (gdb) info registers
>>>
>>> If the cause of your issue is weird codegeneration on ARMv5, it might be
>>> seen from the data above. On the other hand, this would not help if the
>>> issue is algorithmic. I am afraid there is not much more to suggest.
>> (gdb) disassemble *0x01eb0868-8,0x01eb0868+8
>> No function contains specified address.
> Apparently correct syntax is
> disassemble 0x01eb0868-8 0x01eb0868+8
(gdb) bt
#0 0x01eb0868 in ?? ()
(gdb) disassemble 0x01eb0868-8 0x01eb0868+8
Dump of assembler code from 0x1eb0860 to 0x1eb0870:
0x01eb0860: add r12, r12, #1 ; 0x1
0x01eb0864: and r7, r0, r3
0x01eb0868: ldr r1, [r10, r7, lsl #2]
0x01eb086c: cmp r1, #0 ; 0x0
End of assembler dump.
(gdb) info registers
r0 0x1e53b 124219
r1 0x6a 106
r2 0xc3c3c3c6 -1010580538
r3 0x5a5a5a59 1515870809
r4 0x3 3
r5 0x1fd9f83 33398659
r6 0x1e53b 124219
r7 0x4019 16409
r8 0x22a1708c 581005452
r9 0xffffffff -1
r10 0x5a5a5a5a 1515870810
r11 0xbfbfeb70 -1077941392
r12 0x1 1
sp 0xbfbfeb48 -1077941432
lr 0x8f5c 36700
pc 0x1eb0868 32180328
fps 0x0 0
cpsr 0x60000010 1610612752
(gdb)
Still I can't tell anything from that :-/ - way too low level for me
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