CVS commit: src/sys

[Michał Górny <mgorny%netbsd.org@localhost>]

Module Name:    src
Committed By:   mgorny
Date:           Thu Oct 15 17:37:36 UTC 2020

Modified Files:
        src/sys/arch/amd64/amd64: process_machdep.c
        src/sys/arch/i386/i386: process_machdep.c
        src/sys/arch/powerpc/include: ptrace.h
        src/sys/arch/powerpc/powerpc: process_machdep.c
        src/sys/arch/sh3/include: ptrace.h
        src/sys/arch/sh3/sh3: process_machdep.c
        src/sys/kern: sys_ptrace_common.c
        src/sys/sys: ptrace.h

Log Message:
Fix the machine-dependent ptrace requests to respect LWP number

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.


To generate a diff of this commit:
cvs rdiff -u -r1.47 -r1.48 src/sys/arch/amd64/amd64/process_machdep.c
cvs rdiff -u -r1.94 -r1.95 src/sys/arch/i386/i386/process_machdep.c
cvs rdiff -u -r1.17 -r1.18 src/sys/arch/powerpc/include/ptrace.h
cvs rdiff -u -r1.39 -r1.40 src/sys/arch/powerpc/powerpc/process_machdep.c
cvs rdiff -u -r1.18 -r1.19 src/sys/arch/sh3/include/ptrace.h
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/sh3/sh3/process_machdep.c
cvs rdiff -u -r1.83 -r1.84 src/sys/kern/sys_ptrace_common.c
cvs rdiff -u -r1.70 -r1.71 src/sys/sys/ptrace.h

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