Module Name:    src
Committed By:   rin
Date:           Mon Jun 22 05:34:57 UTC 2020

Modified Files:
        src/sys/arch/powerpc/include: mcontext.h types.h
        src/sys/arch/powerpc/powerpc: sig_machdep.c

Log Message:
Fix previous; hide userland ABI details for kernel as suggested by joerg:

- Revive __lwp_settcb(), and call _lwp_setprivate(2) from it.

- Keep l_private opaque pointer for kernel; store raw value of %r2 in it.
  In the previous commit message, I wrote,

> - Make sure that, like other ports, l_private represents address of tcb,
>   not biased one as in %r2.

  but, it turned out to be wrong. mips stores a biased address, at least.
  It is userland responsibility to interpret returned values from

To generate a diff of this commit:
cvs rdiff -u -r1.20 -r1.21 src/sys/arch/powerpc/include/mcontext.h
cvs rdiff -u -r1.63 -r1.64 src/sys/arch/powerpc/include/types.h
cvs rdiff -u -r1.50 -r1.51 src/sys/arch/powerpc/powerpc/sig_machdep.c

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

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