7e88a151e0
describe the (severe) restrictions and future plans.
16 lines
645 B
Plaintext
16 lines
645 B
Plaintext
# $FreeBSD$
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This script is a stopgap for building tuned 32 bit (but i386 ABI compatable)
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libraries for amd64 systems. We *know* we have things like CMOV, SSE2 etc
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so take advantage of it.
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At some point libc would be configured to use the fast syscall/sysret
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instructions (instead of int 0x80) since we have a known minimum feature
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set and don't have to do runtime tests for it.
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libpthread could use the amd64 sysarch syscalls for setting %fs/%gs
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since we don't have USER_LDT. This would be a heck of a lot easier than
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trying to run a real i386-built libc/libpthread.
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Again, this hack is a stopgap until something is integrated into world.
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