I thought this problem may cause by cpu cache. Can anyone give me some
advice, please?
在 2013年5月21日星期二UTC+8上午9时37分41秒，Zen Harry写道：
>
> I got an error of "Illegal instruction" with the debug version.
> I complied the v8 code(v3.19.0) with command: make android_arm.debug
> armv7=false. Then run it on android phone, after a while(about 40s) it came
> out such an errror:
>
>> [1] Illegal instruction ./cctest test-hashing
>>
>>
>> I got some info while it came out "Illegal instruction" with the debug
> version:
>
>> Program received signal SIGILL, Illegal instruction.
>>
>> 0x58953e20 in ?? ()
>>
>> (gdb) bt
>>
>> #0 0x58953e20 in ?? ()
>>
>> #1 0x0019b810 in check (string=...) at ../test/cctest/test-hashing.cc:181
>>
>> #2 0x0019bd14 in check_twochars (a=9 '\t', b=224 '\340') at
>>> ../test/cctest/test-hashing.cc:226
>>
>> #3 0x0019be4c in TestStringHash () at ../test/cctest/test-hashing.cc:245
>>
>> #4 0x0004d39c in CcTest::Run (this=0x13f8944) at
>>> ../test/cctest/cctest.h:79
>>
>> #5 0x0004dbb4 in main (argc=2, argv=0xbedfdcc4) at
>>> ../test/cctest/cctest.cc:141
>>
>> (gdb) x/20i 0x58953e20-20
>>
>> 0x58953e0c: ; <UNDEFINED> instruction: 0xffffffff
>>
>> 0x58953e10: cdple 14, 10, cr11, cr13, cr15, {7}
>>
>> 0x58953e14: cdple 14, 10, cr11, cr13, cr15, {7}
>>
>> 0x58953e18: cdple 14, 10, cr11, cr13, cr15, {7}
>>
>> 0x58953e1c: cdple 14, 10, cr11, cr13, cr15, {7}
>>
>> => 0x58953e20: push {r10} ; (str r10, [sp, #-4]!)
>>
>> 0x58953e24: ldr r10, [pc, #68] ; 0x58953e70
>>
>> 0x58953e28: mov r0, #0
>>
>> 0x58953e2c: mov r12, #9
>>
>> 0x58953e30: ldr r0, [r10, #140] ; 0x8c
>>
>> 0x58953e34: add r0, r12, r0, lsr #1
>>
>> 0x58953e38: add r0, r0, r0, lsl #10
>>
>> 0x58953e3c: eor r0, r0, r0, lsr #6
>>
>> 0x58953e40: mov r12, #224 ; 0xe0
>>
>> 0x58953e44: add r0, r0, r12
>>
>> 0x58953e48: add r0, r0, r0, lsl #10
>>
>> 0x58953e4c: eor r0, r0, r0, lsr #6
>>
>> 0x58953e50: add r0, r0, r0, lsl #3
>>
>> 0x58953e54: eor r0, r0, r0, lsr #11
>>
>> 0x58953e58: add r0, r0, r0, lsl #15
>>
>> (gdb) info register
>>
>> r0 0x4b347211 1261728273
>>
>> r1 0xbedfdbc0 3202341824
>>
>> r2 0x3 3
>>
>> r3 0x58953e20 1486175776
>>
>> r4 0x13e98e0 20879584
>>
>> r5 0xffff7750 4294932304
>>
>> r6 0xafd41524 2949911844
>>
>> r7 0xbedfdcd0 3202342096
>>
>> r8 0x0 0
>>
>> r9 0x0 0
>>
>> r10 0x0 0
>>
>> r11 0xbedfdbcc 3202341836
>>
>> r12 0x40000000 1073741824
>>
>> sp 0xbedf52e8 0xbedf52e8
>>
>> lr 0x19b810 1685520
>>
>> pc 0x58953e20 0x58953e20
>>
>> cpsr 0x40000010 1073741840
>>
>>
>> I got confused with the behavior of the release and debug versions. Can
> anyone help me with this.
>
> 在 2013年5月20日星期一UTC+8下午7时48分04秒，Rodolph Perfetta写道：
>>
>> Does the debug version of V8 reports the same error?
>>
>>
>> On 20 May 2013 07:10, Zen Harry <[email protected]> wrote:
>>
>>> I got a crash on android devices while running cctest. Here is what I
>>> do:
>>>
>>> 1. compile the v8 code (v3.19.0, v3.18.5, v3.17.12) with command:
>>> make android_arm.release -j9 armv7=false
>>> 2. push cctest to android phone
>>> 3. run cctest with command: ./cctest test-hasing, then I got a crash
>>> report.
>>>
>>> Here is what cctest report:
>>>
>>>> #
>>>>
>>>> # Fatal error in ../test/cctest/test-hashing.cc, line 184
>>>>
>>>> # CHECK(runtime_hash == codegen_hash) failed
>>>>
>>>> #
>>>>
>>>> [1] Bus error ./cctest test-hashing
>>>>
>>>>
>>>> I have tested all v8 version above, they got the same error.
>>>
>>> Cpu info:
>>>
>>>> Processor : ARMv6-compatible processor rev 5 (v6l)
>>>>
>>>> BogoMIPS : 245.61
>>>>
>>>> Features : swp half thumb fastmult vfp edsp java
>>>>
>>>> CPU implementer : 0x41
>>>>
>>>> CPU architecture: 6TEJ
>>>>
>>>> CPU variant : 0x1
>>>>
>>>> CPU part : 0xb36
>>>>
>>>> CPU revision : 5
>>>>
>>>>
>>>>> Hardware : GT-S5670 Board
>>>>
>>>> Revision : 0003
>>>>
>>>> Serial : 3634eebd75b800ec
>>>>
>>>>
>>>>
>>> Is anyone can tell me what happened or how can I debug on it?
>>>
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>>>
>>>
>>
>>
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