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 @ 0xFFFFFD0200000000 Got Configuration 623 memsize 20000000 pages 10000 First free page after ROM 0xFFFFFC0000018000 --------------------------------------------------------- ------------------------------------------------------------- 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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