syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historicall

syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historically named the syscall table entry `exit` rather than `_exit`,
but this requires special handling in libc/libsys to cause the `_exit`
symbol to exist while implementing `exit` in libc.

Declare the syscall as `_exit` and flow that through the system.

Because syscall(SYS_exit, code) is fairly widely used, allow a
configured extra line in syscall.h to define SYS_exit to SYS__exit.

I've found no external uses of __sys_exit() so I've not bothered to
create a compatability version of this private symbol.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D51672

show more ...

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are ru

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are run though cpp. This is arguably incomplete as
syscall.mk isn't (and can't practically be) supported.

Reviewed by: kevans
Sponsored by: DARPA, AFRL
Pull Request: https://github.com/freebsd/freebsd-src/pull/1575

show more ...

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
sto

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
stop inserting it into MIASM (requiring libsys/Makefile.sys to disable
the stub).

(This seems like overkill, but I've got another case in CheriBSD so this
reduces my diff appreciably.)

Reviewed by: emaste
Pull Request: https://github.com/freebsd/freebsd-src/pull/1503

show more ...

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the
capenabled variable. This was last used by cloudabi (removed in 2021
by commit cf0ee8738e31).

show more ...

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalo

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalone scripts to generate a specific
file
* Data and procedures are performed by objects instead of procedual code
* Bitmasks are replaced by declarative types
* Temporary files are no longer produced, writing is stored in memory
* Comments provide explanation to functions and semantics

Google Summer of Code 2024 Final Work Product

Co-authored-by: Warner Losh <imp@freebsd.org>
Co-authored-by: Kyle Evans <kevans@freebsd.org>
Co-authored-by: Brooks Davis <brooks@freebsd.org>
Sponsored by: Google (GSoC 24)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1362
Signed-off-by: agge3 <sterspark@gmail.com>

show more ...

syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historicall

syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historically named the syscall table entry `exit` rather than `_exit`,
but this requires special handling in libc/libsys to cause the `_exit`
symbol to exist while implementing `exit` in libc.

Declare the syscall as `_exit` and flow that through the system.

Because syscall(SYS_exit, code) is fairly widely used, allow a
configured extra line in syscall.h to define SYS_exit to SYS__exit.

I've found no external uses of __sys_exit() so I've not bothered to
create a compatability version of this private symbol.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D51672

show more ...

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are ru

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are run though cpp. This is arguably incomplete as
syscall.mk isn't (and can't practically be) supported.

Reviewed by: kevans
Sponsored by: DARPA, AFRL
Pull Request: https://github.com/freebsd/freebsd-src/pull/1575

show more ...

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
sto

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
stop inserting it into MIASM (requiring libsys/Makefile.sys to disable
the stub).

(This seems like overkill, but I've got another case in CheriBSD so this
reduces my diff appreciably.)

Reviewed by: emaste
Pull Request: https://github.com/freebsd/freebsd-src/pull/1503

show more ...

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the
capenabled variable. This was last used by cloudabi (removed in 2021
by commit cf0ee8738e31).

show more ...

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalo

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalone scripts to generate a specific
file
* Data and procedures are performed by objects instead of procedual code
* Bitmasks are replaced by declarative types
* Temporary files are no longer produced, writing is stored in memory
* Comments provide explanation to functions and semantics

Google Summer of Code 2024 Final Work Product

Co-authored-by: Warner Losh <imp@freebsd.org>
Co-authored-by: Kyle Evans <kevans@freebsd.org>
Co-authored-by: Brooks Davis <brooks@freebsd.org>
Sponsored by: Google (GSoC 24)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1362
Signed-off-by: agge3 <sterspark@gmail.com>

show more ...

syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historicall

syscalls: normalize _exit(2) declerations

exit(3) is implemented by the runtime and performs a number of shutdown
actions before ultimately calling _exit(2) to terminate the program. We
historically named the syscall table entry `exit` rather than `_exit`,
but this requires special handling in libc/libsys to cause the `_exit`
symbol to exist while implementing `exit` in libc.

Declare the syscall as `_exit` and flow that through the system.

Because syscall(SYS_exit, code) is fairly widely used, allow a
configured extra line in syscall.h to define SYS_exit to SYS__exit.

I've found no external uses of __sys_exit() so I've not bothered to
create a compatability version of this private symbol.

Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D51672

show more ...

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are ru

makesyscalls: emit cpp in syscalls.map

If there are per-platform differences in which syscalls are supported,
we should only try to export implemented ones in libc. Fortunately,
syscall maps are run though cpp. This is arguably incomplete as
syscall.mk isn't (and can't practically be) supported.

Reviewed by: kevans
Sponsored by: DARPA, AFRL
Pull Request: https://github.com/freebsd/freebsd-src/pull/1575

show more ...

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
sto

sysent: add a NOLIB modifer to prevent stub generation

The yield system call has long existed, but never had a stub. Replace
the hardcoded checks for it in libsys_h.lua and syscalls_map.lua and
stop inserting it into MIASM (requiring libsys/Makefile.sys to disable
the stub).

(This seems like overkill, but I've got another case in CheriBSD so this
reduces my diff appreciably.)

Reviewed by: emaste
Pull Request: https://github.com/freebsd/freebsd-src/pull/1503

show more ...

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the

sys/tools/syscalls: desupport capabilities.conf

We haven't used this since commit be67ea40c5a0 in 2021 so stop carrying
it forward.

Also remove support for setting the list in syscalls.conf via the
capenabled variable. This was last used by cloudabi (removed in 2021
by commit cf0ee8738e31).

show more ...

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalo

Refactor makesyscalls.lua into a library

* main.lua replicates the functionality of makesyscalls.lua
* Individual files are generated by their associated module
* Modules can be called as standalone scripts to generate a specific
file
* Data and procedures are performed by objects instead of procedual code
* Bitmasks are replaced by declarative types
* Temporary files are no longer produced, writing is stored in memory
* Comments provide explanation to functions and semantics

Google Summer of Code 2024 Final Work Product

Co-authored-by: Warner Losh <imp@freebsd.org>
Co-authored-by: Kyle Evans <kevans@freebsd.org>
Co-authored-by: Brooks Davis <brooks@freebsd.org>
Sponsored by: Google (GSoC 24)
Pull Request: https://github.com/freebsd/freebsd-src/pull/1362
Signed-off-by: agge3 <sterspark@gmail.com>

show more ...