Their code was last updated in late 2003, but based on 1997 code-base. I got a lot of warnings and errors that prevented the compilation. With some help from twkm from #c on DALnet (IRC), I was able to complete the compilation process (though with warnings still).
I will mention what I have modified in the files, then I'll provide you with a script and .diff files to do the whole patching and compilation process automatically. This also includes the compilation of the SPEC2000int package (compiled against simplesim-ALPHA only).
The files simplesim-3v0d.tgz and SPEC2000int.tgz are hosted on this site (which also provides a guide).
Open simplesim-3.0/target-alpha/alpha.h: Shift the line 224 to line 239.
-> "extern enum md_opcode md_mask2op;"
Move it such that it's above this line: "/* enum md_opcode -> description string */"
After extracting SPEC2000int package, the Makefile inside needs one line to point at the directory containing the simplesim-3.0 directory.
Here's a sample directory hierarchy to understand:
Your path will be: /home/username/tmp
Scripts & Automagic!
1) Create a directory in your home directory and call it: simtmp
2) Create a file called machine.diff inside simtmp
3) Put the following inside it:
--- simplesim-3.0/target-alpha/alpha.h 2003-10-09 05:14:23.000000000 +0300
+++ simplesim-3.0-fixed/machine.h 2008-12-24 14:02:22.000000000 +0300
@@ -221,7 +221,6 @@
#define MD_MAX_MASK 2048
/* internal decoder state */
-extern enum md_opcode md_mask2op;
extern unsigned int md_opoffset;
extern unsigned int md_opmask;
extern unsigned int md_opshift;
@@ -236,6 +235,8 @@
OP_MAX /* number of opcodes + NA */
+extern enum md_opcode md_mask2op;
/* enum md_opcode -> description string */
#define MD_OP_NAME(OP) (md_op2name[OP])
extern char *md_op2name;
4) Create a file called setup.sh inside simtmp and put this in it:
echo Extracting simplesim
/bin/tar -xf simplesim-3v0d.tgz
echo Patching simplesim
patch -p0 < `pwd`/machine.diff
echo Extracting SPEC
/bin/tar -xf SPEC2000int.tgz
echo Creating results directory
echo Compile simplesim ALPHA
echo Update SPEC Makefile
sed '19s:/home/students/<YOUR USERNAME>/<PATH TO YOUR SIMPLESCALAR DIRECTORY>:'$THISDIR':' ./Makefile > specmake
mv specmake Makefile
echo Compile SPEC
5) cd /home/username/simtmp
Make sure the two packages (simplesim & SPEC2000int) are downloaded here. Don't extract them!
6) chmod +x setup.sh
That's it. The setup file will extract, patch & compile the programs for you. The result of the spec2000int benchmark will be in a directory called Results in the etderr files.