CVS log for src/sys/arch/sh3/sh3/process_machdep.c

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_KERNEL_OPT police

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

Add missing 'error' declaration

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.

Merge changes from current as of 20200406

Move all non-emulation-specific coredump code into the coredump module,
and remove all #ifdef COREDUMP conditional compilation.  Now, the
coredump module is completely separated from the emulation modules, and
they can all be independently loaded and unloaded.

Welcome to 9.99.18 !

update from HEAD

Sync with HEAD

Sync with HEAD

* Split sys/kern/sys_process.c into three parts:
        1 - ptrace(2) syscall for native emulation
        2 - common ptrace(2) syscall code (shared with compat_netbsd32)
        3 - support routines that are shared with PROCFS and/or KTRACE

* Add module glue for #1 and #2.  Both modules will be built-in to the
  kernel if "options PTRACE" is included in the config file (this is
  the default, defined in sys/conf/std).

* Mark the ptrace(2) syscall as modular in syscalls.master (generated
  files will be committed shortly).

* Conditionalize all remaining portions of PTRACE code on a new kernel
  option PTRACE_HOOKS.

XXX Instead of PROCFS depending on 'options PTRACE', we should probably
    just add a procfs attribute to the sys/kern/sys_process.c file's
    entry in files.kern, and add PROCFS to the "#if defineds" for
    process_domem().  It's really confusing to have two different ways
    of requiring this file.

sync with head

The MDP_USEDFPU (amd64 and sh3) and MDP_SSTEP (sh3) are lwp flags not
process ones, rename to MDL_xxx.

Sync with HEAD.

sync with head

Sync with HEAD

Implement PT_STEP.

sync with head

Use lwp_getpcb() on mips, powerpc and sh3, clean from struct user usage.

Remove uarea swap-out functionality:

- Addresses the issue described in PR/38828.
- Some simplification in threading and sleepq subsystems.
- Eliminates pmap_collect() and, as a side note, allows pmap optimisations.
- Eliminates XS_CTL_DATA_ONSTACK in scsipi code.
- Avoids few scans on LWP list and thus potentially long holds of proc_lock.
- Cuts ~1.5k lines of code.  Reduces amd64 kernel size by ~4k.
- Removes __SWAP_BROKEN cases.

Tested on x86, mips, acorn32 (thanks <mpumford>) and partly tested on
acorn26 (thanks to <bjh21>).

Discussed on <tech-kern>, reviewed by <ad>.

sync with head.

Sync with HEAD.

Sync with HEAD.

Update haad-dm branch to haad-dm-base2.

Implement PT___GETREGS40 and PT___SETREGS40 under COMPAT_40 so that
old gdb works on newer kernels.

Compile conditionally depending on options PTRACE and COREDUMP.

process_read_regs, process_write_regs - handle reg::r_gbr

sync with head.

Sync with HEAD.

Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.

sync with head.

sync with head.

ANSI'fy.

Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

Sync with HEAD. Here we go again...

Declare the second arg of process_write_{fp,}regs() to be const.
This permits sh5 to continue to re-use those functions in cpu_setmcontext()
with the recent change to Makefile.kern.inc (revision 1.62).

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

__KERNEL_RCSID()

Merge the nathanw_sa branch.

catch up with -current on kqueue branch

Add support for scheduler activations on SuperH.  Boots multi-user
on Dreamcast (SH4) with stock userland.

file process_machdep.c was added on branch nathanw_sa on 2002-06-21 21:26:33 +0000

remove #if 0 #endif

Catch up with -current.

 SR related parts moved to psl.h. cpufunc.h segments.h are removed.
kernel mode checking is only SR.MD. no check stack pointer.

ANSIfy KNF.

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

- save/restore more registers in process_{read,write}_regs()
- return EINVAL in process_sstep (temporary)

Merge in NetBSD/sh3 from cvs.kame.net repository.

Tree structure:
- sys/arch/sh3: sh3 generic code
	As commented, in-chip device drivers are put into sys/arch/sh3/dev.
- sys/arch/evbsh3: sh3 evaluation boards (pure sh3 CPU, no fancy external HW)
- sys/arch/mmeye: Brains mmEye, www.brains.co.jp
MI source code includes couple of #ifdef for sh3-coff support.
(sh3 uses coff or elf)

Needs some more improvements, especialy in sys/arch/sh3/conf/files.sh3,
to compile the tree (due to last minute tree structure change).