Posts: 326 from 2003/4/11
I was talking with bigfoot and he came back to developing it but he cannot promise any time frame. I'd say bigfoot will speak for himself in this topic soon.
I'm not sure there's really that much to say. When I took the bounty, I made an estimate for how much time it would take to complete the JIT implementation for PPC32. In fact, I finished that task a bit faster than I had originally estimated. What I didn't realise was just how broken Webkit was internally, and how much of a problem it would pose.
The problem is that the JIT engine internally expects a little endian memory layout. This is different from other endian problems in that the JIT engine itself isn't what isn't endian safe, it's the code that the JIT engine generates that isn't.
Now, the problem is that we're on a 32 bit CPU, so the integer part of the CPU, which is what is used for doing these tests, and for passing data around, can only load 32 bits at a time. The JIT engine then generates code that expects the upper 32 bits of the 64 bit floating point value to be located at address + 4
, this assumption is made in the JIT-generated code.
So, as Pampers mentioned, I still want to finish this, but with the amount of time I ended up spending on fixing endian issues in the JIT engine, I overshot my initial time estimate by at least a factor of 5, and I had to focus on other things to get an income. Thus, I'm still (obviously very slowly) working on this, but I (also obviously) no longer expect to get paid for this work, and thus if anyone wants their money back or wants to assign their money to another project, then of course it is no problem.
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