PR/57261: hppa should be converted to __HAVE_SYSCALL_INTERN

Provide syscall_intern and use the md_syscall in syscall trap handling.

Use __BIT

Use __vaddr_t since we don't expose vaddr_t by default to userland.

Move to a flat space register convention. %sr[4-7] are all now the space
number allocated to the process. gcc produces (slightly) better code
with this convention.

Retain backwards compatiblity.

W

Move to a flat space register convention. %sr[4-7] are all now the space
number allocated to the process. gcc produces (slightly) better code
with this convention.

Retain backwards compatiblity.

Welcome to 6.99.36

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Retire struct user, remove sys/user.h inclusions. Note sys/user.h header
as obsolete. Remove USER_TO_UAREA/UAREA_TO_USER macros.

Various #include fixes and review by matt@.

Add md_astpending to struct mdlwp and use it.

Whitespace.

Include sys/user.h for MD proc.h (hppa and m68k ports).

Merge nick-hppapmap.

This is a port of the OpenBSD pmap and trap handling code to get us

- Performance boost on some/all machines.
- Well on the way to PA2.0 (in 32bit mode) support

Merge nick-hppapmap.

This is a port of the OpenBSD pmap and trap handling code to get us

- Performance boost on some/all machines.
- Well on the way to PA2.0 (in 32bit mode) support. Several
machines probe hardware, but fail sometime after interrupts
are enabled.

Other things changed / fixed on the branch are

- update autoconf to use the OpenBSD code.
- com @ dino is very close to being supported.
- HPPA_REDZONE has been replaced with a working redzone which
is enabled with DIAGNOSTIC.
- UPAGES has been halved in size.
- power(4) from OpenBSD to fix a few bugs.
- updated list of modules from OpenBSD.
- initial ports of uturn(4), astro(4) and elroy(4).
- update some copyrights (remove advertising clause, etc.)

Thanks to mjf for some of the above, testing and listening.

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Various improvements to the hppa kernel for gdb.

- add the useful space and control registers to struct reg
- update process_{read,write}_regs accordingly
- use MID_HPPA in core dumps.
- dump th

Various improvements to the hppa kernel for gdb.

- add the useful space and control registers to struct reg
- update process_{read,write}_regs accordingly
- use MID_HPPA in core dumps.
- dump the fp regs into cores.
- add single stepping support from OpenBSD.

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s/proc/lwp/ in comment

merge ktrace-lwp.

update for LWPs, and some lite cleanup.

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

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

Added files to support generic HP PA-RISC based machines. hp700-specific
files to follow.