[Webkit-unassigned] [Bug 103128] New: LLInt C Loop backend should work on 32 bit platforms

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=103128

           Summary: LLInt C Loop backend should work on 32 bit platforms
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tobias.netzel at googlemail.com


The C loop backend isn't (any more?) fully implemented when building with JSVALUE32_64.
An implementation of Double2Ints is missing.

After providing an implemented for that running the tests results in crashes when running the most basic API tests. As I'm using a big endian platform (ppc) that might also be related to that. Calls to java script functions don't work; the arguments aren't passed correctly (i.e. what is expected in t1 ends up in t3) and (after copying the contents of t3 to t1 using gdb) return values aren't passed correctly as well.

I'd be grateful for any hints on where to proceed debugging!

For information:
On a 64 bit big endian platform (ppc64) the C loop backend builds and mostly works. At least one of the more complex API tests fails (the API tests abort after one fail) but only around 50 of the java script tests fail. (Maybe because of some endianness issue(s)?)

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