I vaguely remember Gabe running into something similar a while ago...
Gabe, does this look like the same bug to you?

Steve

On Tue, Jan 5, 2010 at 4:31 AM, Maximilien Breughe
<[email protected]> wrote:
> Hello,
>
> I am interested in the decoded instructions for the SimpleCPU for Alpha
> in System Emulation. Therefore I used the tracing flag "Exec". However,
> when I tried to combine trace-flags=Exec with the TimingSimpleCPU I
> received a "Segmentation fault" (even for the hello benchmark).
>
> Does anybody know what's going wrong?
>
> This is the command I use:
> build/ALPHA_SE/m5.debug --trace-flags=Exec configs/example/se.py --timing
>
> The last lines of output I get are:
> 31380000: system.cpu T0 : @_dl_init_paths+72    : ldah
> r19,0(r29)      : IntAlu :  D=0x0000000120092a60
> 31410000: system.cpu T0 : @_dl_init_paths+76    : lda
> r19,-27928(r19) : IntAlu :  D=0x000000012008bd48
> 31440000: system.cpu T0 : @_dl_init_paths+80    : ldq
> r27,-32496(r29) : MemRead :  D=0x0000000120007f74 A=0x12008ab70
> 31500000: system.cpu T0 : @_dl_init_paths+84    : jsr
> r26,(r27)       : IntAlu :  D=0x000000012001bd64
> 31530000: system.cpu T0 : @_dl_important_hwcaps    : ldah
> r29,9(r27)      : IntAlu :  D=0x0000000120097f74
> 31560000: system.cpu T0 : @_dl_important_hwcaps+4    : lda
> r29,-21780(r29) : IntAlu :  D=0x0000000120092a60
> 31590000: system.cpu T0 : @_dl_important_hwcaps+8    : ldah
> r0,0(r29)       : IntAlu :  D=0x0000000120092a60
> 31620000: system.cpu T0 : @_dl_important_hwcaps+12    : ldah
> r1,0(r29)       : IntAlu :  D=0x0000000120092a60
> 31650000: system.cpu T0 : @_dl_important_hwcaps+16    : lda
> r1,-28024(r1)   : IntAlu :  D=0x000000012008bce8
> Segmentation fault
>
> I reinstalled gcc so that I have the recommended version (A colleague
> told me it's v4.2) to compile M5.
> Information about my programs:
> scons v1.2.0.d20090919
> gcc v4.2.4
> swig v1.3.40
> M4 v1.4.5
> Python v2.4.3
> uname -a: Linux madmax 2.6.18-128.4.1.el5 #1 SMP Tue Aug 4 12:51:10 EDT
> 2009 x86_64 x86_64 x86_64 GNU/Linux
>
>
> Thanks,
>
> Max
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>
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