COMPAT_NETBSD32 is all about running the 32-bit flavor of native
binaries on a 64-bit platform[*], as such:
- Make the logic about which "sendsig" flavor to call MI (as it is in the
native 64-bit environment) and follow the same rules as the native 32-bit
environment.
- Make COMPAT_NETBSD32 x COMPAT_16 work the same as it would in the
native 32-bit environment by providing a netbsd32_sendsig_sigcontext_16_hook,
rather than overriding the entire sendsig logic with a netbsd32_sendsig_hook.
- In netbsd32___sigaction_sigtramp(), make sure the compat_netbsd32_16
module is loaded if the trampoline version specifies a sigcontext style
handler, otherwise return EINVAL so that libc can try again with siginfo
style.

[*] ...except for arm32, which uses it to mean "run 32-bit OABI binaries
from the 32-bit EABI environment". Doing it this way was arguably a mistake,
but we are stuck with it for now, so support it by providing a machine-
dependent override for netbsd32_sendsig() that also disables the corresponding
logic in netbsd32___sigaction_sigtramp().

Fixes PR kern/56487.

Whitespace nits.

s/u_intN_t/uintN_t/

branches: 1.34.12;
Merge the [pgoyette-compat] branch

branches: 1.33.12; 1.33.14;
Catch netbsd32_copyargs() up to changes in r1.441 src/sys/kern/kern_exec.c

branches: 1.32.2; 1.32.4; 1.32.6;
sync with the regular method; no functional diff

branches: 1.31.22;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

Include <sys/exec_aout.h> explicitly instead of relying on <sys/exec.h> to
do it for you.

ansify function definition

branches: 1.28.4; 1.28.6;
Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.27.4; 1.27.6;
remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.26.12; 1.26.14; 1.26.16; 1.26.18;
Remove all the __P

branches: 1.25.8; 1.25.10; 1.25.16; 1.25.18;
Count environment vars with envc, not argc [hi dsl!]. Reported by Nicolas
Joly in private mail.

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.23.20; 1.23.24; 1.23.26; 1.23.28;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.

branches: 1.22.2; 1.22.4; 1.22.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.20.4;
nuke trailing whitespace

branches: 1.19.8; 1.19.10;
all ports define __HAVE_SIGINFO now, so remove the CPP conditionals

fix typo in previous.

Define SIGINFO variant of netbsd32_sendsig when __HAVE_SIGINFO is defined.

bring in MI declarations.

branches: 1.15.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

In preparation for COMPAT_NETBSD32 on SH-5:

- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().

Tested on Sparc64 by Matt Green.

Implement passing AT_{E,R}{U,G}ID in the elf aux vector, like solaris.
- pass struct proc to copyargs.
- eliminate svr4_copyargs, since it is the same as ours now.

Prototype for probing noteless 32-bit emulation binaries.

branches: 1.10.12;
update copyright notices.

Adjust to the new copyargs() footprint.

branches: 1.8.2; 1.8.4;
de-static netbsd32_exec_aout_prep_[zno]magic().
de-static netbsd32_from_stat43().
move the guts of netbsd32_execve() into netbsd32_execve2().

all of are for the forthcoming sunos32 compat mode (for sparc64).

make netbsd32_copyargs() an inline

adapt to execsw[] changes

restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

Update to 32-bit compatibility routines.

branches: 1.3.8;
SPARC32->NETBSD32

move sparc32 to netbsd32; split out MD part (signal handling) (mostly via repository copy, rename and perl -pi :-)

add a 32-bit compatibility module for the sparc64 port, so it can run NetBSD/sparc binaries with a LP64 kernel.

Whitespace nits.

s/u_intN_t/uintN_t/

Merge the [pgoyette-compat] branch

branches: 1.33.12; 1.33.14;
Catch netbsd32_copyargs() up to changes in r1.441 src/sys/kern/kern_exec.c

branches: 1.32.2; 1.32.4; 1.32.6;
sync with the regular method; no functional diff

branches: 1.31.22;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

Include <sys/exec_aout.h> explicitly instead of relying on <sys/exec.h> to
do it for you.

ansify function definition

branches: 1.28.4; 1.28.6;
Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.27.4; 1.27.6;
remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.26.12; 1.26.14; 1.26.16; 1.26.18;
Remove all the __P

branches: 1.25.8; 1.25.10; 1.25.16; 1.25.18;
Count environment vars with envc, not argc [hi dsl!]. Reported by Nicolas
Joly in private mail.

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.23.20; 1.23.24; 1.23.26; 1.23.28;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.

branches: 1.22.2; 1.22.4; 1.22.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.20.4;
nuke trailing whitespace

branches: 1.19.8; 1.19.10;
all ports define __HAVE_SIGINFO now, so remove the CPP conditionals

fix typo in previous.

Define SIGINFO variant of netbsd32_sendsig when __HAVE_SIGINFO is defined.

bring in MI declarations.

branches: 1.15.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

In preparation for COMPAT_NETBSD32 on SH-5:

- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().

Tested on Sparc64 by Matt Green.

Implement passing AT_{E,R}{U,G}ID in the elf aux vector, like solaris.
- pass struct proc to copyargs.
- eliminate svr4_copyargs, since it is the same as ours now.

Prototype for probing noteless 32-bit emulation binaries.

branches: 1.10.12;
update copyright notices.

Adjust to the new copyargs() footprint.

branches: 1.8.2; 1.8.4;
de-static netbsd32_exec_aout_prep_[zno]magic().
de-static netbsd32_from_stat43().
move the guts of netbsd32_execve() into netbsd32_execve2().

all of are for the forthcoming sunos32 compat mode (for sparc64).

make netbsd32_copyargs() an inline

adapt to execsw[] changes

restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

Update to 32-bit compatibility routines.

branches: 1.3.8;
SPARC32->NETBSD32

move sparc32 to netbsd32; split out MD part (signal handling) (mostly via repository copy, rename and perl -pi :-)

add a 32-bit compatibility module for the sparc64 port, so it can run NetBSD/sparc binaries with a LP64 kernel.

Merge the [pgoyette-compat] branch

branches: 1.33.12;
Catch netbsd32_copyargs() up to changes in r1.441 src/sys/kern/kern_exec.c

branches: 1.32.2; 1.32.4; 1.32.6;
sync with the regular method; no functional diff

branches: 1.31.22;
Change u_long to vaddr_t/vsize_t in exec code where appropriate (mostly
involves setregs and vmcmds). Should result in no code differences.

Include <sys/exec_aout.h> explicitly instead of relying on <sys/exec.h> to
do it for you.

ansify function definition

branches: 1.28.4; 1.28.6;
Make the emulations, exec formats, coredump, NFS, and the NFS server
into modules. By and large this commit:

- shuffles header files and ifdefs
- splits code out where necessary to be modular
- adds module glue for each of the components
- adds/replaces hooks for things that can be installed at runtime

branches: 1.27.4; 1.27.6;
remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.26.12; 1.26.14; 1.26.16; 1.26.18;
Remove all the __P

branches: 1.25.8; 1.25.10; 1.25.16; 1.25.18;
Count environment vars with envc, not argc [hi dsl!]. Reported by Nicolas
Joly in private mail.

remove all the double (and triple) casts used to convert 32bit userspace
pointers to and from 64bit kernel pointers. Instead use the defines
NETBSD32PTR64(p32) to read a 32bit pointer and (the new) NETBSD32PTR32(p32,p64)
to write a 32bit pointer throughout.
The 32bit pointer is now a struct to enforce the above.
amd64 (with linux emul) and sparc64 will both compile (when the arch stuff
goes in soon), and amd64 still runs some i386 binaries.

branches: 1.23.20; 1.23.24; 1.23.26; 1.23.28;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.

branches: 1.22.2; 1.22.4; 1.22.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.

merge ktrace-lwp.

branches: 1.20.4;
nuke trailing whitespace

branches: 1.19.8; 1.19.10;
all ports define __HAVE_SIGINFO now, so remove the CPP conditionals

fix typo in previous.

Define SIGINFO variant of netbsd32_sendsig when __HAVE_SIGINFO is defined.

bring in MI declarations.

branches: 1.15.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.

Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V

In preparation for COMPAT_NETBSD32 on SH-5:

- The MD netbsd32_machdep.h header now defines the 32-bit pointer type
instead of using u_int32_t everywhere,
- The MD netbsd32_machdep.h header now defines a macro (at least on
current implementations) which converts a 32-bit pointer to its 64-bit
equivalent,
- Change the MI code to utilise the above two items in all the right places,
- Implement netbsd32___sigaction_sigtramp().

Tested on Sparc64 by Matt Green.

Implement passing AT_{E,R}{U,G}ID in the elf aux vector, like solaris.
- pass struct proc to copyargs.
- eliminate svr4_copyargs, since it is the same as ours now.

Prototype for probing noteless 32-bit emulation binaries.

branches: 1.10.12;
update copyright notices.

Adjust to the new copyargs() footprint.

branches: 1.8.2; 1.8.4;
de-static netbsd32_exec_aout_prep_[zno]magic().
de-static netbsd32_from_stat43().
move the guts of netbsd32_execve() into netbsd32_execve2().

all of are for the forthcoming sunos32 compat mode (for sparc64).

make netbsd32_copyargs() an inline

adapt to execsw[] changes

restructure struct emul and execsw, in preparation to make emulations LKMable:
* move all exec-type specific information from struct emul to execsw[] and
provide single struct emul per emulation
* elf:
- kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry
per emulation and contains pointer to respective probe function
- interp is allocated via MALLOC() rather than on stack
- elf_args structure is allocated via MALLOC() rather than malloc()
* ecoff: the per-emulation hooks moved from alpha and mips specific code
to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per
emulation supporting ecoff with appropriate probe function
* the makecmds/probe functions don't set emulation, pointer to emulation is
part of appropriate execsw[] entry
* constify couple of structures

Update to 32-bit compatibility routines.

branches: 1.3.8;
SPARC32->NETBSD32

move sparc32 to netbsd32; split out MD part (signal handling) (mostly via repository copy, rename and perl -pi :-)

add a 32-bit compatibility module for the sparc64 port, so it can run NetBSD/sparc binaries with a LP64 kernel.