Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.5.2;
Make these work with either a.out or ELF.

Implement *__errno() redirection, with help from Matt Thomas.

branches: 1.3.2;
Warn about references to the compatibility vfork() (i.e. the vfork() with
the 4.4BSD non-shared-address-space semantics), and direct the user to
include <unistd.h> to generate the correct reference.

This warning isn't about an ABI compatibility issue, but the new vfork() is
considerably faster.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.3.8; 1.3.20;
Remove clause 3 and 4 from TNF licenses

branches: 1.2.32;
Change to use a register prefix.

branches: 1.1.2;
Add __clone(2) for VAX.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

Add __msgctl13(), __semctl13(), and __shmctl13() (symbols are __RENAME()'d
in their respective header files). Add PSEUDO stubs for the old versions
of these system calls.

Note that __semctl13() doesn't require the extra stub that the old
semctl()/__semctl() did, as the SUSv2 version takes variable arguments,
and thus does not require the extra indirection.

Merge all MD __sigaction14_sigtramp.c copies into one:
- sparc and sparc64 were not using version 0 sigcontext when there were
no arguments in the signal version. This was probably a bug.
- vax is using +1 the version numbers of the other archs.
- Only hppa was defining __LIBC12_SOURCE__ so it was getting a working
sigcontext before. all the other ports that supported sigcontext had
the compat code disabled.
[pointed out by thorpej, thanks!]
If we want to remove sigcontext support from userland at least now there
is less work to do so.

branches: 1.10.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.9.18;
Remove unused local variable (re-declared in inner conditional scope).

make these consistent.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

Add missing __RCSID()

save errno while trying to install a !SA_SIGINFO trampoline -- this
is expected to fail with !COMPAT_16 kernels, and we shouldn't
overwrite errno in this case

Enable the SIGINFO trampoline.

Merge the nathanw_sa branch.

Fix a signal handler bug originally reported by Hugh Graham some year ago:
If two signals are sent after each other without the process being run in
userspace between them then the second one will overwrite part of the signal
info stored on the userstack.
Fixed by rewriting and simplifying both the signal delivery code and the
trampoline code. Also bump signal version number to 2.
Rename __sigtramp1.S to __sigtramp.S.

branches: 1.1.2;
New __sigaction14() system call stub which registers the signal
trampoline, and the signal trampolines themselves.

NOTE: These are not yet enabled; they will be enabled after further
testing on more architectures.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

fix references to the syscall formerly known as SYS___sigreturn14

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Make these work with either a.out or ELF.

New libc signal handling stuff.

Since this a signal trampoline #2, make that's in the file name.

netbsd.org->NetBSD.org

branches: 1.1.2;
Fix a signal handler bug originally reported by Hugh Graham some year ago:
If two signals are sent after each other without the process being run in
userspace between them then the second one will overwrite part of the signal
info stored on the userstack.
Fixed by rewriting and simplifying both the signal delivery code and the
trampoline code. Also bump signal version number to 2.
Rename __sigtramp1.S to __sigtramp.S.

Fix a signal handler bug originally reported by Hugh Graham some year ago:
If two signals are sent after each other without the process being run in
userspace between them then the second one will overwrite part of the signal
info stored on the userstack.
Fixed by rewriting and simplifying both the signal delivery code and the
trampoline code. Also bump signal version number to 2.
Rename __sigtramp1.S to __sigtramp.S.

branches: 1.1.2;
New __sigaction14() system call stub which registers the signal
trampoline, and the signal trampolines themselves.

NOTE: These are not yet enabled; they will be enabled after further
testing on more architectures.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

fix references to the syscall formerly known as SYS___sigreturn14

Since this a signal trampoline #2, make that's in the file name.

Decorate the VAX signal trampoline with the appropriate .cfi
directives to allow exception unwind / backtrace across a signal
handler.

N.B. This is currently disabled, as these .cfi directives cause
linker warnings about incompatible TEXTREL relocations in .eh_frame.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.1.52;
Enable the SIGINFO trampoline.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.3.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.1.2;
Add a VAX version of __syscall. XXX Doesn't handle if syscall number is
> 0xffffffff or < -0xffffffff.

gcc 4.5 on vax creates PLT stubs with an entry mask of 0xffc
rather than 0 like gcc 4.1 did, so the sneaky assembly functions
that "ret" without really returning now clobber their registers.
adjust these functions to avoid this problem.

branches: 1.6.4;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.5.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.3.2;
Make these work with either a.out or ELF.

Implement *__errno() redirection, with help from Matt Thomas.

branches: 1.1.2;
Add syscall stubs for __vfork14(). These are basically copies of Ovfork.S
with the syscall numbers changed.

Since 4.4BSD vfork(2) did not share address space, Ovfork.S could be changed
to be identical to fork.S (modulo syscall numbers). __vfork14.S, however,
needs to remain separate since with a shared address space, the stub needs to
pre-decrement the stack and do an indirect jump to the return address, so that
the shared stackframe is still there when the parent returns. (Obviously,
this does not apply to systems which to not build stackframes on leaf calls.)

Merge riastradh-drm2 to HEAD.

Make __curbrk & __minbrk hidden.

branches: 1.13.4; 1.13.10; 1.13.14;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.12.52;
Use an unsigned comparison against minbrk.
From OpenBSD, changed by Miod Vallat.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.9.2;
Fix a major botch in 1.4 (which I did not do) which broke _brk and malloc.

Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

Thinko in previous: we do always use an internal name.

Add internal names for brk() and sbrk().

Delete the leftover _brk entry; as discussed with Ragge.

branches: 1.3.10;
* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.8.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.6.2;
Fix some ELF/a.out lossage

Make these work with either a.out or ELF.

Implement *__errno() indirection.

branches: 1.3.2;
Some changes to disassembly easier without causing any performance penalty.

Didn't take care of errors when return parameter was long long.
Bug pointed out by Arne Henrik Juul.

Added libc VAX specific files.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.3.52;
execl, execle and execlp must be weak-aliased.

Change to use a register prefix.

branches: 1.1.2;
These are too simple to not have in assembler. Also shrunk the libs with
~1k of unneccessary code :-)

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.4.52;
execl, execle and execlp must be weak-aliased.

Change to use a register prefix.

branches: 1.2.2;
change "pushl [r0](ap)" ---> "pushl (ap)[r0]" ... the old version
made a reference to an external symbol "r0" rather that used register r0.

These are too simple to not have in assembler. Also shrunk the libs with
~1k of unneccessary code :-)

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.3.52;
execl, execle and execlp must be weak-aliased.

Change to use a register prefix.

branches: 1.1.2;
These are too simple to not have in assembler. Also shrunk the libs with
~1k of unneccessary code :-)

Mark exect(3) obsolete and bind it to plain execve(2) on all platforms

The original exect(2) from BSD4.2 was enabling bit for tracing
(single-step mode) and calling execve(2). The purpose of it was to generate
a signal for a tracer once the application will change its image to a new
program.

This approach no longer works as:
- exect(2) traces (single-steps) libc and it requires hundreds or
thousands steps before entering a new image
- it's vax and x86 specific code
- this functionality has been moved to the kernel - once a process is
traced it will generate SIGTRAP with si_code TRAP_EXEC and route it to
its debugger
- the side effects and unportability make this interface unusable
- there are no known users of this interface
- it apparently never worked better since day0 of NetBSD ("day0 bug")

Users are requested to move to other execve(2) variants. Calling current
execve(2) as it is the most similar behavior to this one from BSD4.2.

Discussed several times on mailing lists and in PR/51700.

Add warning to exect(3) telling about marking this function obsolete.

This function is prepared to be removed in next libc major bump.

Sponsored by <The NetBSD Foundation>

branches: 1.6.26; 1.6.30;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.5.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.5.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Implement pthread_atfork() (in libc, because the required threadlib
stub behavior is exactly the same as the usual behavior).

Change to use a register prefix.

branches: 1.2.2;
Need an internal name for fork().

branches: 1.1.20;
Added libc VAX specific files.

gcc 4.5 on vax creates PLT stubs with an entry mask of 0xffc
rather than 0 like gcc 4.1 did, so the sneaky assembly functions
that "ret" without really returning now clobber their registers.
adjust these functions to avoid this problem.

branches: 1.5.4;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.4.8; 1.4.20;
Remove clause 3 and 4 from TNF licenses

branches: 1.3.30;
Add the *context.? sources to SRCS.
Make getcontext _getcontext and add a getcontext weak alias.

Use _ALIGN_TEXT.
Make sure R0 is 0 in the saved context.

Add getcontext(2) stub.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

Add __msgctl13(), __semctl13(), and __shmctl13() (symbols are __RENAME()'d
in their respective header files). Add PSEUDO stubs for the old versions
of these system calls.

Note that __semctl13() doesn't require the extra stub that the old
semctl()/__semctl() did, as the SUSv2 version takes variable arguments,
and thus does not require the extra indirection.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.4.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.2.2;
Need an internal name for pipe(2).

branches: 1.1.20;
Added libc VAX specific files.

Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.7.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.5.2;
Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

Implement *__errno() indirection.

branches: 1.2.4;
ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Treat reboot() like a normal system call. From PR 2458.

Added libc VAX specific files.

Merge riastradh-drm2 to HEAD.

Make __curbrk & __minbrk hidden.

branches: 1.11.4; 1.11.10; 1.11.14;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.10.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

Shameless hack to reference end when using a.out and _end when using ELF.

branches: 1.7.2;
Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

Thinko in previous: we do always use an internal name.

Add internal names for brk() and sbrk().

branches: 1.3.10;
* On architectures using ELF, and conditionally on those in transition, rename
_ASM_LABEL(cerror) and _ASM_LABEL(curbrk) to _C_LABEL(__cerror) and
_C_LABEL(__curbrk) (or their respective architecture-specific equivalents) to
avoid possible name clashes with identifiers used in user applications.
* Do the same for minbrk on all architectures to avoid a GCC-specific (and
on ELF architectures effectively useless) symbol reference renaming in MI code.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

These files are obsolete; setlogin() is now implemented in C with a
small syscall stub.

branches: 1.2.2;
Make these work with either a.out or ELF.

Added libc VAX specific files.

Add special treatment of shmat(2).
On m68k ELF calling standard (__SVR4_ABI__), if a function
returns a pointer, the return value should go to a0 as well as d0.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

Add __msgctl13(), __semctl13(), and __shmctl13() (symbols are __RENAME()'d
in their respective header files). Add PSEUDO stubs for the old versions
of these system calls.

Note that __semctl13() doesn't require the extra stub that the old
semctl()/__semctl() did, as the SUSv2 version takes variable arguments,
and thus does not require the extra indirection.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

Warn about references to the compatibility() sigaction(), sigpending(),
sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to
include <signal.h> to generate the correct reference.

New libc signal handling stuff.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.3.12;
Warn about references to the compatibility() sigaction(), sigpending(),
sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to
include <signal.h> to generate the correct reference.

New libc signal handling stuff.

Added libc VAX specific files.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.6.2;
Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

Warn about references to the compatibility() sigaction(), sigpending(),
sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to
include <signal.h> to generate the correct reference.

New libc signal handling stuff.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

the WARN_REFERENCES text "include <signal.h> for correct reference" is pointless
as <signal.h> won't help you, so remove it

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Make these work with either a.out or ELF.

Warn about references to the compatibility() sigaction(), sigpending(),
sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to
include <signal.h> to generate the correct reference.

New libc signal handling stuff.

ENTRY() takes two argument now, not one.

PROF -> GPROF

Added libc VAX specific files.

Seperate out the compat support for VAX. Also, make references to the
sigcontext sigtramp code weak so compat can be compiled out.

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

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.6.2;
Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

Warn about references to the compatibility() sigaction(), sigpending(),
sigprocmask(), sigreturn(), and sigsuspend(), and direct the user to
include <signal.h> to generate the correct reference.

New libc signal handling stuff.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.

Rename "syscall" to "_syscall" and provide "syscall" as a weak alias.

branches: 1.7.44;
Move IDs into .ident
Use END(x)
Remove a.out support
Make CERROR hidden

branches: 1.6.52;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.

Change to use a register prefix.

branches: 1.4.2;
Fix some bugs and clean up for ELF & a.out support

Make these work with either a.out or ELF.

ENTRY() takes two argument now, not one.

Added libc VAX specific files.