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41 lines
1.8 KiB
Diff
41 lines
1.8 KiB
Diff
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Here are two patches for FreeBSD's kernel that are necessary for wine
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(well not strictly _necessary_ but without them parts of it won't work.)
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They unfortunately didn't make it into the base distribution in time
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for the 3.3 release code freeze...
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patch-3.3-sys-ldtshare:
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make kernel threads (rfork(), which wine uses) share one LDT instead of
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each having its own. this fixes the same problem that wine also had on
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linux kernels before 2.2.
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patch-3.3-sys-sigtrap:
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stop wine's SIGTRAP handler from being called in the sigreturn syscall,
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causing problems for wine's internal debugger. (it would still
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correctly show a crash backtrace but all commands that use single-
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stepping failed.)
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Apply as follows:
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(cd /usr/src/sys && patch ) <patch-3.3-sys-ldtshare
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(cd /usr/src/sys && patch ) <patch-3.3-sys-sigtrap
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then build a new kernel. (don't forget to include the options USER_LDT,
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SYSVSHM, SYSVSEM, and SYSVMSG, wine needs these.)
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-current users:
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someone of you :) needs to implement a runtime check in wine for the
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FreeBSD version and based on that use/set the sc_gs and sc_fs values
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in the sigcontext struct in signal handlers for versions >= 4.0.
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(see the `wine signal handlers lose %fs on FreeBSD' thread on the
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wine-devel list for details, can be read at
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http://www.integrita.com/cgi-local/lwgate.pl/WINE-DEVEL/archives/1999-09/Subject/article-15.html
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at least i ended up there when i searched it today. yes you could also
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simply define FS_sig and GS_sig in wine's include/sig_context.h and be
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done with it but the resulting wine would only work on 4.0 and
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Alexandre (wine maintainer) didn't like that idea...)
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A LDT patch for -current is at http://www.freebsd.org/~luoqi
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(not included since i don't know if it still applies), the sigtrap
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patch looks like it could also apply to -current but i haven't tried.
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(and if not, i guess a similar fix will be committed soon anyway.)
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