CVS commit: [netbsd-9] src/sys

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Sun Oct 18 18:42:11 UTC 2020

Modified Files:
        src/sys/arch/amd64/amd64 [netbsd-9]: process_machdep.c
        src/sys/arch/i386/i386 [netbsd-9]: process_machdep.c
        src/sys/arch/powerpc/powerpc [netbsd-9]: process_machdep.c
        src/sys/arch/sh3/include [netbsd-9]: ptrace.h
        src/sys/arch/sh3/sh3 [netbsd-9]: process_machdep.c
        src/sys/arch/x86/x86 [netbsd-9]: fpu.c
        src/sys/kern [netbsd-9]: sys_ptrace_common.c
        src/sys/sys [netbsd-9]: ptrace.h

Log Message:
Pull up following revision(s) (requested by kamil in ticket #1117):

        sys/arch/sh3/include/ptrace.h: revision 1.19
        sys/arch/amd64/amd64/process_machdep.c: revision 1.48
        sys/arch/sh3/sh3/process_machdep.c: revision 1.23
        sys/arch/sh3/sh3/process_machdep.c: revision 1.24
        sys/arch/i386/i386/process_machdep.c: revision 1.95
        sys/arch/x86/x86/fpu.c (apply patch)
        sys/kern/sys_ptrace_common.c: revision 1.84
        sys/arch/powerpc/powerpc/process_machdep.c: revision 1.40
        sys/sys/ptrace.h: revision 1.71
        sys/arch/powerpc/powerpc/process_machdep.c: revision 1.41
        (all via patch, adapted)

Fix s87_tw reconstruction to correctly indicate register states

Fix the code reconstructing s87_tw (full tag word) from fx_sw (abridged
tag word) to correctly represent all register states.  The previous code
only distinguished between empty/non-empty registers, and assigned
'regular value' to all non-empty registers.  The new code explicitly
distinguishes the two other tag word values: empty and special.

Fix the machine-dependent ptrace register-related requests (e.g.
PT_GETXMMREGS, PT_GETXSTATE on x86) to correctly respect the LWP number
passed as the data argument.  Before this change, these requests
did not operate on the requested LWP of a multithreaded program.
This change required moving ptrace_update_lwp() out of unit scope,
and changing ptrace_machdep_dorequest() function to take a pointer
to pointer as the second argument, consistently with ptrace_regs().

I am planning to extend the ATF ptrace() register tests in the future
to check for regressions in multithreaded programs, as time permits.

Reviewed by kamil.

Add missing 'error' declaration


To generate a diff of this commit:
cvs rdiff -u -r1.43.2.1 -r1.43.2.2 src/sys/arch/amd64/amd64/process_machdep.c
cvs rdiff -u -r1.93.2.1 -r1.93.2.2 src/sys/arch/i386/i386/process_machdep.c
cvs rdiff -u -r1.38 -r1.38.18.1 \
    src/sys/arch/powerpc/powerpc/process_machdep.c
cvs rdiff -u -r1.15 -r1.15.2.1 src/sys/arch/sh3/include/ptrace.h
cvs rdiff -u -r1.21 -r1.21.20.1 src/sys/arch/sh3/sh3/process_machdep.c
cvs rdiff -u -r1.55 -r1.55.2.1 src/sys/arch/x86/x86/fpu.c
cvs rdiff -u -r1.58.2.12 -r1.58.2.13 src/sys/kern/sys_ptrace_common.c
cvs rdiff -u -r1.65.2.1 -r1.65.2.2 src/sys/sys/ptrace.h

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