Populate the non-LOAD openbsd.syscalls section (and PT_OPENBSD_SYSCALL)
with {uint offset, uint syscall#} entries in libc & ld.so.
In libc a few syscall# entries (break, sigprocmask, _tfork, _threxit)
are duplicated because additional or inline uses occur (that situation
is handled elsewhere)
ok kettenis

_C_LABEL() and _ASM_LABEL() are no longer useful in the "everything
is ELF" world. Eliminate use of them in amd64, arm64, armv7, i386,
macppc, mips64, and sparc64 code.

ok deraadt@ jca@ krw@

Make brk() and sbrk() weak again to fix build with clang 13.

OK jsg@

Consistently reference '_end' instead of 'end' in the brk/sbrk implementation

ok deraadt@

Adds hidden _libc_FOO aliases for the system call stubs.
Stop generating _brk and _sbrk symbols: they've already been hidden.
Set the ELF symbol size on the syscall stubs.
Give the __{min,cur}brk symbols a size and type, and hide more jump labels.

ok deraadt@

Hide many (194!) symbols that nothing should be using.
Delete exect(2); it wasn't portable across archs and nothing used it.

ports test build by naddy@
ok deraadt@ kettenis@

Move __cerror to ___cerror with a weak alias so that rthreads can override it.
On mips64, also correct the name called from plain cerror to __cerror.

"looks correct" miod@

zap rcsid.
okay deraadt@ (tested them all)

mips64 is now going ABI64 and shared library support!
String functions need some optimization/rewrite to take full advantage.

32 -> 64 bit cleanups but no optimizations yet

Move mips to mips64

_C_LABEL() and _ASM_LABEL() are no longer useful in the "everything
is ELF" world. Eliminate use of them in amd64, arm64, armv7, i386,
macppc, mips64, and sparc64 code.

ok deraadt@ jca@ krw@

Make brk() and sbrk() weak again to fix build with clang 13.

OK jsg@

Consistently reference '_end' instead of 'end' in the brk/sbrk implementation

ok deraadt@

Adds hidden _libc_FOO aliases for the system call stubs.
Stop generating _brk and _sbrk symbols: they've already been hidden.
Set the ELF symbol size on the syscall stubs.
Give the __{min,cur}brk symbols a size and type, and hide more jump labels.

ok deraadt@

Hide many (194!) symbols that nothing should be using.
Delete exect(2); it wasn't portable across archs and nothing used it.

ports test build by naddy@
ok deraadt@ kettenis@

Move __cerror to ___cerror with a weak alias so that rthreads can override it.
On mips64, also correct the name called from plain cerror to __cerror.

"looks correct" miod@

zap rcsid.
okay deraadt@ (tested them all)

mips64 is now going ABI64 and shared library support!
String functions need some optimization/rewrite to take full advantage.

32 -> 64 bit cleanups but no optimizations yet

Move mips to mips64

Make brk() and sbrk() weak again to fix build with clang 13.

OK jsg@

Consistently reference '_end' instead of 'end' in the brk/sbrk implementation

ok deraadt@

Adds hidden _libc_FOO aliases for the system call stubs.
Stop generating _brk and _sbrk symbols: they've already been hidden.
Set the ELF symbol size on the syscall stubs.
Give the __{min,cur}brk symbols a size and type, and hide more jump labels.

ok deraadt@

Hide many (194!) symbols that nothing should be using.
Delete exect(2); it wasn't portable across archs and nothing used it.

ports test build by naddy@
ok deraadt@ kettenis@

Move __cerror to ___cerror with a weak alias so that rthreads can override it.
On mips64, also correct the name called from plain cerror to __cerror.

"looks correct" miod@

zap rcsid.
okay deraadt@ (tested them all)

mips64 is now going ABI64 and shared library support!
String functions need some optimization/rewrite to take full advantage.

32 -> 64 bit cleanups but no optimizations yet

Move mips to mips64

Consistently reference '_end' instead of 'end' in the brk/sbrk implementation

ok deraadt@

Adds hidden _libc_FOO aliases for the system call stubs.
Stop generating _brk and _sbrk symbols: they've already been hidden.
Set the ELF symbol size on the syscall stubs.
Give the __{min,cur}brk symbols a size and type, and hide more jump labels.

ok deraadt@

Hide many (194!) symbols that nothing should be using.
Delete exect(2); it wasn't portable across archs and nothing used it.

ports test build by naddy@
ok deraadt@ kettenis@

Move __cerror to ___cerror with a weak alias so that rthreads can override it.
On mips64, also correct the name called from plain cerror to __cerror.

"looks correct" miod@

zap rcsid.
okay deraadt@ (tested them all)

mips64 is now going ABI64 and shared library support!
String functions need some optimization/rewrite to take full advantage.

32 -> 64 bit cleanups but no optimizations yet

Move mips to mips64