Alan Hourihane wrote:
Is there someone looking to integrate the TLS patches for libGL ??
We should certainly take a look soon and comment upon the patches used.
Here is a patch that covers part of what's in the Redhat patch. This convert the static_functions table to a list of offsets instead of a list of pointers. According to 'objdump -R' on the Mesa libGL, it cuts out about 1800 R_386_RELATIVE relocs. However, the size of the library *increases* by about 24k. That doesn't make sense to me.
Here's an updated version of that patch. There are some significant differences.
1. *All* architectures use the string offset table. To do this, gl_procs.py was modified to generate a big character array called gl_string_table in glprocs.h. The static_functions array now contains offsets into that array instead of pointers to strings. If gl_procs.py is invoked with '-m short' it will generate a (hard to read) character array. If it is invoked with no option or '-m long' it will generate a big (~16k) string. The string version of the .h file generates a warning from GCC.
2. The same glprocs.h is used even for the optimized x86 case. This is done by defining NEED_FUNC_POINTERS only on non-x86. Actually, it should only be defined on architectures that don't have generated assembly dispatch stubs.
3. All of the _ts_ dispatch code is *gone*. The x86 assembly dispatch code and the C dispatch code reflect this. The SPARC assembly dispatch has not yet been updated, but it should follow the x86 model. This means that this cod will catch fire, fallover, and sink into the swamp on SPARC. This will obviously need to be fixed before that portion of the patch is committed.
Unless there are objections, I would like to commit the new glprocs.h and the non-x86 specific code in glapi.c to support it.
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