Hi Mitali,
I'm not sure what's going wrong which is causing the segfault you see. I
strongly encourage you to use x86 or ARM instead of ALPHA. x86 and ARM are
better supported ISAs, both in terms of gem5 support and compiler/system
support. Alternatively, you can use GDB to try to track down where the
problem is.
You can't mount the bigswap file because it is formatted as swap, not
ext2/3.
Jason
On Sun, May 21, 2017 at 8:24 AM Mitali Sinha wrote:
> I am trying to run a simple hello world C++ program in FS mode in ALPHA
> ISA. I am following the steps as follows:
>
> 1) Cross compiling the program using a pre-compiled cross-compiler for
> target ALPHA.
>
> $ wget
> http://www.m5sim.org/dist/current/alphaev67-unknown-linux-gnu.tar.bz2
> $ tar -xjvf alphaev67-unknown-linux-gnu.tar.bz2
> $ export
> CXX=/home/iiitd/Desktop/compiler/compiler/alphaev67-unknown-linux-gnu/bin
> $ export
> CC=/home/iiitd/Desktop/compiler/compiler/alphaev67-unknown-linux-gnu/bin
> $ export
> PATH=$PATH:/home/iiitd/Desktop/compiler/compiler/alphaev67-unknown-linux-gnu/bin
> $ alphaev67-unknown-linux-gnu-g++ -static new1.cpp -o hello6
>
> 2) Placing the program into the disk image.
>
> I have downloaded the Full system image file from http://gem5.org/Download
> .
> $ ls test-full-system
> binaries disks
> $ ls test-full-system/disks
> linux-bigswap2.img linux-latest.img
> $ cd test-full-system
> $ mkdir tmpdir
> $ ls tmpdir
> benchmarks bin dev etc iscsi lib linuxrc lost+found mnt modules
> proc sbin sys tmp usr var
> $ sudo mount -o loop,offset=32256 disks/linux-latest.img tmpdir
> $ cd tmpdir
> $ sudo cp /home/iiitd/Desktop/hello6 benchmark
> $ cd ..
> $ sudo umount tmpdir
>
> 3) Created a .rcS file:
>
> #! /bin/sh
> cd benchmarks
> /sbin/m5 dumpresetstats
> echo "executing hello world"
> ./hello6
> echo "Done"
> /sbin/m5 exit
>
> 4) Run in Gem5
>
> $ echo "export M5_PATH=/home/iiitd/test-full-system" >> ~/.bashrc
> $ source ~/.bashrc
> $ cd gem5
> $ build/ALPHA/gem5.opt configs/example/fs.py
> --disk-image=/home/iiitd/test-full-system/disks/linux-latest.img
> --script=/home/iiitd/a.rcS
>
> In another terminal:
> $ cd util/term
> $ ./m5term localhost 3457
> m5 slave terminal: Terminal 0
> M5 console: m5AlphaAccess @ 0xFD02
> Got Configuration 623
> memsize 2000 pages 1
> First free page after ROM 0xFC018000
> -
> -
> EXT2-fs warning: checktime reached, running e2fsck is recommended
> loading script...
> executing hello world
> Segmentation fault
> Done
>
>
> Also, should I use the linux-bigswap2.img instead of linux-latest.img?
> When I try to mount the linux-bigswap2.img, I get the following error:
>
> $ sudo mount -o loop,offset=32256 disks/linux-bigswap2.img tmpdir
> [sudo] password for iiitd:
> NTFS signature is missing.
> Failed to mount '/dev/loop2': Invalid argument
> The device '/dev/loop2' doesn't seem to have a valid NTFS.
> Maybe the wrong device is used? Or the whole disk instead of a
> partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
>
>
>
>
>
> --
> Mitali Sinha,
> PhD Scholar,
> IIIT Delhi
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