| version 1.1, 2002/07/24 08:00:16 |
version 1.2, 2003/06/24 05:11:38 |
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| While the GC should work on MacOS X Server, MacOS X and Darwin, I only tested |
See README.darwin for the latest Darwin/MacOSX information. |
| it on MacOS X Server. |
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| I've added a PPC assembly version of GC_push_regs(), thus the setjmp() hack is |
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| no longer necessary. Incremental collection is supported via mprotect/signal. |
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| The current solution isn't really optimal because the signal handler must decode |
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| the faulting PPC machine instruction in order to find the correct heap address. |
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| Further, it must poke around in the register state which the kernel saved away |
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| in some obscure register state structure before it calls the signal handler - |
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| needless to say the layout of this structure is no where documented. |
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| Threads and dynamic libraries are not yet supported (adding dynamic library |
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| support via the low-level dyld API shouldn't be that hard). |
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| The original MacOS X port was brought to you by Andrew Stone. |
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| June, 1 2000 |
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| Dietmar Planitzer |
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| dave.pl@ping.at |
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| Note from Andrew Begel: |
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| One more fix to enable gc.a to link successfully into a shared library for |
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| MacOS X. You have to add -fno-common to the CFLAGS in the Makefile. MacOSX |
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| disallows common symbols in anything that eventually finds its way into a |
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| shared library. (I don't completely understand why, but -fno-common seems to |
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| work and doesn't mess up the garbage collector's functionality). |
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