G/C arm/atomic.h

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

branches: 1.50.2;
separate cputypes.h for CPU_ID_* from armreg.h,
and add some implementor IDs, CortexA55,73,75 IDs.

(preliminary changes for merging aarch64)

branches: 1.49.26;
Rename sljitarch.h to sljit_machdep.h.

Add sljit support to arm.

branches: 1.47.8;
This change arm, armeb, earm, earmeb, earmhf, earmhfeb so all builds that
share a MACHINE_ARCH for userland so that except for etc, will produce
identical sets.

usr/include/machine now points to usr/include/arm

Add a default arm32 vmparam.h

Install fenv.h

Don't install fp.h anymore

branches: 1.43.2;
Export <arm/vfpreg.h>

Add aeabi.h header which descibes the C portion of the EABI run time API.

Added cpuconf.h needed by libkvm build.

branches: 1.40.2; 1.40.6; 1.40.10;
Do not install bus.h.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Revert last change and just use .WAIT

Fix a race condition -j. Don't do SUBDIRS= include/arm include/arm/...
since the latter might be done before the former which mtree doesn't like.
Instead have arm recurse into its own subdirs.

branches: 1.36.14;
Remove arm support for IPKDB.

It hasn't worked since arm was broken out from arm32 in Jan 2001, and
no-one has noticed or cared to fix it.

Add support for kcore headers to arm32 kernel core dumps.

The kcore code is based on i386's kcore header handling.

Having an asm stub for dumpsys, to dump the registers onto the stack, and
then call the C code to do the memory dump is based on amd64's core dump
code.

This allows a successful core dump on cats.

Part of fixing PR cats/18026.

branches: 1.34.10; 1.34.18; 1.34.22; 1.34.24; 1.34.30; 1.34.36;
Install atomic.h, as needed by the installed rwlock.h.

Add <arm/mutex.h> and <arm/rwlock.h>
Add atomic_cas to <arm/atomic.h> for use by <rwlock.h>

branches: 1.32.2;
Merge newlock2 to head.

branches: 1.31.4;
don't install <machine/db_machdep.h>, this is kernel only

branches: 1.30.4; 1.30.8;
merge ktrace-lwp.

branches: 1.29.12;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

branches: 1.28.2;
Merge the nathanw_sa branch.

Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.

Byte-swapping optimizations, enabled if compiling with GCC:
* Byte-swap 16-bit and 32-bit constants at compile-time.
* Inline 16-bit and 32-bit variable byte-swaps. These take 3 and 4
insns, respectively, and inlining saves the minimum 6 cycle penalty
to call/return from the byte swap function.

Implement pmc(9) -- An interface to hardware performance monitoring
counters. These counters do not exist on all CPUs, but where they
do exist, can be used for counting events such as dcache misses that
would otherwise be difficult or impossible to instrument by code
inspection or hardware simulation.

pmc(9) is meant to be a general interface. Initially, the Intel XScale
counters are the only ones supported.

branches: 1.24.8; 1.24.10;
Add an <arm/swi.h>, containing symbolic names for SWI ranges.

Don't install includes which userland doesn't need.

- Move more contents of various <machine/vmparam.h> files into
<arm/arm32/vmparam.h> (mostly the stuff that's tied to the pmap
implementation).
- Since the MMU definitions in pte.h are specific to ARM processors
that support 32-bit mode, move pte.h to <arm/arm32/pte.h>.
- Make the Netwinder startup file build again (use PT_B|PT_C, rather
than PT_CACHEABLE, since the latter expands to a variable these days).

branches: 1.21.6;
Add a merged <pcb.h> for arm26/arm32.

PR 13581
Add empty pmap.h and vmparam.h to make userland happier.

Make <sysarch.h> valid for all arm platforms. Adjust/remove port-specific
includes as required.

branches: 1.18.2;
Add a common <arm/param.h>, containing those few things that are obviously
common across all ARM systems.

Add <arm/endian.h> and remove the cats, dnard and netwinder versions, since
they're all the same (a redirect to <sys/endian.h>).

Move <arm/arm32/bus.h> to <arm/bus.h>, since it looks like it's going to be
necessary on arm26 as well.

Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.

Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.

branches: 1.11.2;
some include files added newly write into Makefile.

Install <arm/endian_machdep.h>.

Fix typo in header filename.

branches: 1.8.2;
Shared ARM ptrace(2) implementation. Mostly the same as the arm32
version, but with some #ifdefs for arm26.

Also, don't define PT_STEP, since we don't implement it. This should
reduce code size a little.

Common <arm/reg.h> (and hence common struct reg) for ARM.
This is theoretically backward-incompatible on arm26, but GDB doesn't work there
yet anyway.

Initial potentially sharable <arm/armreg.h>. Used by all arm26 code.

Add <arm/frame.h>, for shared stack frame structures. Currently, only sigframes
are common.

Move <machine/signal.h> into shared directory.

Share <machine/elf_machdep.h> between arm26 and arm32.

Install all the headers (arm32 does).

Skeleton ARM include infrastructure.

Remove the kernel PMC code. Sent yesterday on tech-kern@.

This change:

* Removes "options PERFCTRS", the associated includes, and the associated
ifdefs. In doing so, it removes several XXXSMPs in the MI code, which is
good.

* Removes the PMC code of ARM XSCALE.

* Removes all the pmc.h files. They were all empty, except for ARM XSCALE.

* Reorders the x86 PMC code not to rely on the legacy pmc.h file. The
definitions are put in sysarch.h.

* Removes the kern/sys_pmc.c file, and along with it, the sys_pmc_control
and sys_pmc_get_info syscalls. They are marked as OBSOL in kern,
netbsd32 and rump.

* Removes the pmc_evid_t and pmc_ctr_t types.

* Removes all the associated man pages. The sets are marked as obsolete.

separate cputypes.h for CPU_ID_* from armreg.h,
and add some implementor IDs, CortexA55,73,75 IDs.

(preliminary changes for merging aarch64)

branches: 1.49.26;
Rename sljitarch.h to sljit_machdep.h.

Add sljit support to arm.

branches: 1.47.8;
This change arm, armeb, earm, earmeb, earmhf, earmhfeb so all builds that
share a MACHINE_ARCH for userland so that except for etc, will produce
identical sets.

usr/include/machine now points to usr/include/arm

Add a default arm32 vmparam.h

Install fenv.h

Don't install fp.h anymore

branches: 1.43.2;
Export <arm/vfpreg.h>

Add aeabi.h header which descibes the C portion of the EABI run time API.

Added cpuconf.h needed by libkvm build.

branches: 1.40.2; 1.40.6; 1.40.10;
Do not install bus.h.

Retire varargs.h support. Move machine/stdarg.h logic into MI
sys/stdarg.h and expect compiler to provide proper builtins, defaulting
to the GCC interface. lint still has a special fallback.
Reduce abuse of _BSD_VA_LIST_ by defining __va_list by default and
derive va_list as required by standards.

Revert last change and just use .WAIT

Fix a race condition -j. Don't do SUBDIRS= include/arm include/arm/...
since the latter might be done before the former which mtree doesn't like.
Instead have arm recurse into its own subdirs.

branches: 1.36.14;
Remove arm support for IPKDB.

It hasn't worked since arm was broken out from arm32 in Jan 2001, and
no-one has noticed or cared to fix it.

Add support for kcore headers to arm32 kernel core dumps.

The kcore code is based on i386's kcore header handling.

Having an asm stub for dumpsys, to dump the registers onto the stack, and
then call the C code to do the memory dump is based on amd64's core dump
code.

This allows a successful core dump on cats.

Part of fixing PR cats/18026.

branches: 1.34.10; 1.34.18; 1.34.22; 1.34.24; 1.34.30; 1.34.36;
Install atomic.h, as needed by the installed rwlock.h.

Add <arm/mutex.h> and <arm/rwlock.h>
Add atomic_cas to <arm/atomic.h> for use by <rwlock.h>

branches: 1.32.2;
Merge newlock2 to head.

branches: 1.31.4;
don't install <machine/db_machdep.h>, this is kernel only

branches: 1.30.4; 1.30.8;
merge ktrace-lwp.

branches: 1.29.12;
Factor out W{CHAR,INT}_{MAX,MIN} into their own header file.

branches: 1.28.2;
Merge the nathanw_sa branch.

Remove KDIR=, since SYS_INCLUDE=symlinks and KDIR are not supported any more.

Byte-swapping optimizations, enabled if compiling with GCC:
* Byte-swap 16-bit and 32-bit constants at compile-time.
* Inline 16-bit and 32-bit variable byte-swaps. These take 3 and 4
insns, respectively, and inlining saves the minimum 6 cycle penalty
to call/return from the byte swap function.

Implement pmc(9) -- An interface to hardware performance monitoring
counters. These counters do not exist on all CPUs, but where they
do exist, can be used for counting events such as dcache misses that
would otherwise be difficult or impossible to instrument by code
inspection or hardware simulation.

pmc(9) is meant to be a general interface. Initially, the Intel XScale
counters are the only ones supported.

branches: 1.24.8; 1.24.10;
Add an <arm/swi.h>, containing symbolic names for SWI ranges.

Don't install includes which userland doesn't need.

- Move more contents of various <machine/vmparam.h> files into
<arm/arm32/vmparam.h> (mostly the stuff that's tied to the pmap
implementation).
- Since the MMU definitions in pte.h are specific to ARM processors
that support 32-bit mode, move pte.h to <arm/arm32/pte.h>.
- Make the Netwinder startup file build again (use PT_B|PT_C, rather
than PT_CACHEABLE, since the latter expands to a variable these days).

branches: 1.21.6;
Add a merged <pcb.h> for arm26/arm32.

PR 13581
Add empty pmap.h and vmparam.h to make userland happier.

Make <sysarch.h> valid for all arm platforms. Adjust/remove port-specific
includes as required.

branches: 1.18.2;
Add a common <arm/param.h>, containing those few things that are obviously
common across all ARM systems.

Add <arm/endian.h> and remove the cats, dnard and netwinder versions, since
they're all the same (a redirect to <sys/endian.h>).

Move <arm/arm32/bus.h> to <arm/bus.h>, since it looks like it's going to be
necessary on arm26 as well.

Add definitions of C99 integer format conversion macros.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 specified-width integer type limits.
XXX Fastest minimum-width integer types haven't been decided upon yet.

Add definitions of C99 integer constant macros.
Tidy Makefiles up a little.

Add definitions of C99 minimum-width and greatest-width integer types.
XXX Fastest minimum-width integer types haven't been decided upon yet.

branches: 1.11.2;
some include files added newly write into Makefile.

Install <arm/endian_machdep.h>.

Fix typo in header filename.

branches: 1.8.2;
Shared ARM ptrace(2) implementation. Mostly the same as the arm32
version, but with some #ifdefs for arm26.

Also, don't define PT_STEP, since we don't implement it. This should
reduce code size a little.

Common <arm/reg.h> (and hence common struct reg) for ARM.
This is theoretically backward-incompatible on arm26, but GDB doesn't work there
yet anyway.

Initial potentially sharable <arm/armreg.h>. Used by all arm26 code.

Add <arm/frame.h>, for shared stack frame structures. Currently, only sigframes
are common.

Move <machine/signal.h> into shared directory.

Share <machine/elf_machdep.h> between arm26 and arm32.

Install all the headers (arm32 does).

Skeleton ARM include infrastructure.