Date: Sat, 6 Jan 2001 09:40:04 -0800 (PST) From: Jake Burkholder <jake@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 exception.s genassym.c globals.s machdep.c support.s swtch.s src/sys/i386/include asmacros.h globaldata.h globals.h src/sys/i386/isa icu_vector.s Message-ID: <200101061740.f06He4J18857@freefall.freebsd.org>
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jake 2001/01/06 09:40:04 PST Modified files: sys/i386/i386 exception.s genassym.c globals.s machdep.c support.s swtch.s sys/i386/include asmacros.h globaldata.h globals.h sys/i386/isa icu_vector.s Log: Use %fs to access per-cpu variables in uni-processor kernels the same as multi-processor kernels. The old way made it difficult for kernel modules to be portable between uni-processor and multi-processor kernels. It is no longer necessary to jump through hoops. - always load %fs with the private segment on entry to the kernel - change the type of the self referntial pointer from struct privatespace to struct globaldata - make the globaldata symbol have value 0 in all cases, so the symbols in globals.s are always offsets, not aliases for fields in globaldata - define the globaldata space used for uniprocessor kernels in C, rather than assembler - change the assmebly language accessors to use %fs, add a macro PCPU_ADDR(member, reg), which loads the register reg with the address of the per-cpu variable member Revision Changes Path 1.75 +6 -12 src/sys/i386/i386/exception.s 1.97 +2 -4 src/sys/i386/i386/genassym.c 1.17 +2 -12 src/sys/i386/i386/globals.s 1.426 +11 -4 src/sys/i386/i386/machdep.c 1.77 +1 -3 src/sys/i386/i386/support.s 1.104 +2 -7 src/sys/i386/i386/swtch.s 1.20 +4 -4 src/sys/i386/include/asmacros.h 1.16 +2 -4 src/sys/i386/include/globaldata.h 1.14 +3 -6 src/sys/i386/include/globals.h 1.25 +3 -1 src/sys/i386/isa/icu_vector.s To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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