CVS commit: src/sys/arch

["David Laight" <dsl%netbsd.org@localhost>]

Module Name:    src
Committed By:   dsl
Date:           Sat Feb 15 22:20:42 UTC 2014

Modified Files:
        src/sys/arch/amd64/amd64: machdep.c netbsd32_machdep.c
            process_machdep.c
        src/sys/arch/amd64/include: mcontext.h
        src/sys/arch/i386/i386: machdep.c process_machdep.c
        src/sys/arch/i386/include: mcontext.h
        src/sys/arch/x86/include: fpu.h
        src/sys/arch/x86/x86: convert_xmm_s87.c fpu.c

Log Message:
Load and save the fpu registers (for copies to/from userspace) using
  helper functions in arch/x86/x86/fpu.c
They (hopefully) ensure that we write to the entire buffer and don't load
  values that might cause faults in kernel.
Also zero out the 'pad' field of the i386 mcontext fp area that I think
  once contained the registers of any Weitek fpu.
  Dunno why it wasn't pasrt of the union.
Some of these copies could be removed if the code directly copied the save
  area to/from userspace addresses.


To generate a diff of this commit:
cvs rdiff -u -r1.204 -r1.205 src/sys/arch/amd64/amd64/machdep.c
cvs rdiff -u -r1.91 -r1.92 src/sys/arch/amd64/amd64/netbsd32_machdep.c
cvs rdiff -u -r1.28 -r1.29 src/sys/arch/amd64/amd64/process_machdep.c
cvs rdiff -u -r1.16 -r1.17 src/sys/arch/amd64/include/mcontext.h
cvs rdiff -u -r1.747 -r1.748 src/sys/arch/i386/i386/machdep.c
cvs rdiff -u -r1.83 -r1.84 src/sys/arch/i386/i386/process_machdep.c
cvs rdiff -u -r1.11 -r1.12 src/sys/arch/i386/include/mcontext.h
cvs rdiff -u -r1.3 -r1.4 src/sys/arch/x86/include/fpu.h
cvs rdiff -u -r1.2 -r1.3 src/sys/arch/x86/x86/convert_xmm_s87.c
cvs rdiff -u -r1.5 -r1.6 src/sys/arch/x86/x86/fpu.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.