Protect KASSERT() with "#ifdef DIAGNOSTIC" as its expression is
undefined otherwise.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.32.2; 1.32.4;
Use c99 initializer for wsemul_ops

Don't #ifdef DIAGNOSTIC around KASSERTs.

the definition of KASSERT does the same thing

add support for loading fonts in vcons and subsequently resizing screens
- drivers can use this by setting VCONS_LOADFONT and WSSCREEN_RESIZE
- each vcons screen can now have its own font and geometry
- while there, add support for xterm's ESC[18t to report the text buffer's
size

With this tou can:
wsfontload -N foo /usr/share/wscons/fonts/flori.816
wsconsctl -dw font=foo
currently this is limited to drivers that don't use the glyph cache, like genfb

Untangle.

branches: 1.28.20; 1.28.38;
Add mappings for KS_End/KS_KP_End, so that the `End' key actually does
something.

branches: 1.27.2;
-rename the "KS_GROUP_Ascii" key symbol category to "Plain" because
this is what it meant all the time -- it includes characters >127
-delegate translation of all key symbols >127 to the terminal emulation
layer -- formerly everything non-special was passed to the tty subsystem
directly, involving truncation to a "char", which effectively meant
some ISO-1 assumption

branches: 1.26.52; 1.26.64; 1.26.72;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.24.2; 1.24.4;
fix incomplete struct decl.

branches: 1.23.4; 1.23.8;
merge ktrace-lwp.

branches: 1.22.2;
add const.

Adapt to recent constification.

If the driver supports reverse, try that first - even on color displays.
This removes a XXX and makes us independent of the users default colors.

branches: 1.19.10;
Remove include of "opt_wsmsgattrs.h" here, since that's already done
by wsdisplayvar.h. Fixes build problem for sparc.

Implement support to dynamically change wscons console and kernel colors.

Two new ioctls are added to the wsdisplay device, named WSDISPLAY_GMSGATTRS
and WSDISPLAY_SMSGATTRS, used to retrieve the actual values and set them,
respectively (the name, if you are wondering, comes from "message attributes").

A new emulop is added to the underlying display driver (only vga, for now)
which sets the new attribute for the whole screen, without having to clear
it. This is optional, which means that this also works with other drivers
that don't have this new operation.

Five new kernel options have been added, although only documented in
i386 kernels (for now):
- WSDISPLAY_CUSTOM_OUTPUT, which enables the ioctls described above to
change the colors dynamically from userland. This is enabled by default
in the GENERIC kernel (as well as others) but disabled on all INSTALL*
kernels (as this feature is useless there).
- WS_DEFAULT_COLATTR, WS_DEFAULT_MONOATTR, WS_DEFAULT_BG and WS_DEFAULT_FG,
which specify the default colors for the console at boot time. These have
the same meaning as the (already existing) WS_KERNEL_* variables.

wsconsctl is modified to add msg.default.{attrs,bg,fg} and
msg.kernel.{attrs,bg,fg} to the display part, so that colors can be changed
after boot.

Tested on NetBSD/i386 with vga (and vga in mono mode), and on NetBSD/mac68k.
No objections in tech-kern@.

branches: 1.17.6;
remove trailing \n in panic(). approved perry.

switch/case KNF.

alloc_attr -> allocattr

Approved by Matthias Drochner.

branches: 1.14.10;
Fix a pasto in the last revision.

ANSIfy.

branches: 1.12.2; 1.12.4;
don't panic if there is ESC in kernel output, just print a warning and
ignore the ESC; also remove the #ifdef DIAGNOSTIC

replace embedded _rcsid[] string by __KERNEL_RCSID(), remove _copyright[]

branches: 1.10.8;
define a "clear screen" command to the emulator and complete the
emulation's "reset" implementations as far as useful

Change from bcopy/bzero to memxxx. From PR 6778 by
Erik Bertelsen <erik@q610.ebe.uni-c.dk>.

Change the calling interface for text output (to the graphics driver)
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.

add some more ASCII definitions, move NP->FF for consistency

Move the translation of keypad and function keys into the realm of the
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!

fix "Cursor Next Line (CNL)" (did the opposite)

Initialize the "curattr" member of the emulation data in early console
setup -- it is used to fill empty space.
Fixes 2/3 of PR kern/5457 (Jason Thorpe).

Simple screen attribute handling for wscons.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.

fix max() vs min() confusion at 2 places

Initial import of cgd's new wscons code.

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.32.2;
Use c99 initializer for wsemul_ops

Don't #ifdef DIAGNOSTIC around KASSERTs.

the definition of KASSERT does the same thing

add support for loading fonts in vcons and subsequently resizing screens
- drivers can use this by setting VCONS_LOADFONT and WSSCREEN_RESIZE
- each vcons screen can now have its own font and geometry
- while there, add support for xterm's ESC[18t to report the text buffer's
size

With this tou can:
wsfontload -N foo /usr/share/wscons/fonts/flori.816
wsconsctl -dw font=foo
currently this is limited to drivers that don't use the glyph cache, like genfb

Untangle.

branches: 1.28.20; 1.28.38;
Add mappings for KS_End/KS_KP_End, so that the `End' key actually does
something.

branches: 1.27.2;
-rename the "KS_GROUP_Ascii" key symbol category to "Plain" because
this is what it meant all the time -- it includes characters >127
-delegate translation of all key symbols >127 to the terminal emulation
layer -- formerly everything non-special was passed to the tty subsystem
directly, involving truncation to a "char", which effectively meant
some ISO-1 assumption

branches: 1.26.52; 1.26.64; 1.26.72;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.24.2; 1.24.4;
fix incomplete struct decl.

branches: 1.23.4; 1.23.8;
merge ktrace-lwp.

branches: 1.22.2;
add const.

Adapt to recent constification.

If the driver supports reverse, try that first - even on color displays.
This removes a XXX and makes us independent of the users default colors.

branches: 1.19.10;
Remove include of "opt_wsmsgattrs.h" here, since that's already done
by wsdisplayvar.h. Fixes build problem for sparc.

Implement support to dynamically change wscons console and kernel colors.

Two new ioctls are added to the wsdisplay device, named WSDISPLAY_GMSGATTRS
and WSDISPLAY_SMSGATTRS, used to retrieve the actual values and set them,
respectively (the name, if you are wondering, comes from "message attributes").

A new emulop is added to the underlying display driver (only vga, for now)
which sets the new attribute for the whole screen, without having to clear
it. This is optional, which means that this also works with other drivers
that don't have this new operation.

Five new kernel options have been added, although only documented in
i386 kernels (for now):
- WSDISPLAY_CUSTOM_OUTPUT, which enables the ioctls described above to
change the colors dynamically from userland. This is enabled by default
in the GENERIC kernel (as well as others) but disabled on all INSTALL*
kernels (as this feature is useless there).
- WS_DEFAULT_COLATTR, WS_DEFAULT_MONOATTR, WS_DEFAULT_BG and WS_DEFAULT_FG,
which specify the default colors for the console at boot time. These have
the same meaning as the (already existing) WS_KERNEL_* variables.

wsconsctl is modified to add msg.default.{attrs,bg,fg} and
msg.kernel.{attrs,bg,fg} to the display part, so that colors can be changed
after boot.

Tested on NetBSD/i386 with vga (and vga in mono mode), and on NetBSD/mac68k.
No objections in tech-kern@.

branches: 1.17.6;
remove trailing \n in panic(). approved perry.

switch/case KNF.

alloc_attr -> allocattr

Approved by Matthias Drochner.

branches: 1.14.10;
Fix a pasto in the last revision.

ANSIfy.

branches: 1.12.2; 1.12.4;
don't panic if there is ESC in kernel output, just print a warning and
ignore the ESC; also remove the #ifdef DIAGNOSTIC

replace embedded _rcsid[] string by __KERNEL_RCSID(), remove _copyright[]

branches: 1.10.8;
define a "clear screen" command to the emulator and complete the
emulation's "reset" implementations as far as useful

Change from bcopy/bzero to memxxx. From PR 6778 by
Erik Bertelsen <erik@q610.ebe.uni-c.dk>.

Change the calling interface for text output (to the graphics driver)
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.

add some more ASCII definitions, move NP->FF for consistency

Move the translation of keypad and function keys into the realm of the
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!

fix "Cursor Next Line (CNL)" (did the opposite)

Initialize the "curattr" member of the emulation data in early console
setup -- it is used to fill empty space.
Fixes 2/3 of PR kern/5457 (Jason Thorpe).

Simple screen attribute handling for wscons.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.

fix max() vs min() confusion at 2 places

Initial import of cgd's new wscons code.

Use c99 initializer for wsemul_ops

Don't #ifdef DIAGNOSTIC around KASSERTs.

the definition of KASSERT does the same thing

add support for loading fonts in vcons and subsequently resizing screens
- drivers can use this by setting VCONS_LOADFONT and WSSCREEN_RESIZE
- each vcons screen can now have its own font and geometry
- while there, add support for xterm's ESC[18t to report the text buffer's
size

With this tou can:
wsfontload -N foo /usr/share/wscons/fonts/flori.816
wsconsctl -dw font=foo
currently this is limited to drivers that don't use the glyph cache, like genfb

Untangle.

branches: 1.28.38;
Add mappings for KS_End/KS_KP_End, so that the `End' key actually does
something.

branches: 1.27.2;
-rename the "KS_GROUP_Ascii" key symbol category to "Plain" because
this is what it meant all the time -- it includes characters >127
-delegate translation of all key symbols >127 to the terminal emulation
layer -- formerly everything non-special was passed to the tty subsystem
directly, involving truncation to a "char", which effectively meant
some ISO-1 assumption

branches: 1.26.52; 1.26.64; 1.26.72;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.24.2; 1.24.4;
fix incomplete struct decl.

branches: 1.23.4; 1.23.8;
merge ktrace-lwp.

branches: 1.22.2;
add const.

Adapt to recent constification.

If the driver supports reverse, try that first - even on color displays.
This removes a XXX and makes us independent of the users default colors.

branches: 1.19.10;
Remove include of "opt_wsmsgattrs.h" here, since that's already done
by wsdisplayvar.h. Fixes build problem for sparc.

Implement support to dynamically change wscons console and kernel colors.

Two new ioctls are added to the wsdisplay device, named WSDISPLAY_GMSGATTRS
and WSDISPLAY_SMSGATTRS, used to retrieve the actual values and set them,
respectively (the name, if you are wondering, comes from "message attributes").

A new emulop is added to the underlying display driver (only vga, for now)
which sets the new attribute for the whole screen, without having to clear
it. This is optional, which means that this also works with other drivers
that don't have this new operation.

Five new kernel options have been added, although only documented in
i386 kernels (for now):
- WSDISPLAY_CUSTOM_OUTPUT, which enables the ioctls described above to
change the colors dynamically from userland. This is enabled by default
in the GENERIC kernel (as well as others) but disabled on all INSTALL*
kernels (as this feature is useless there).
- WS_DEFAULT_COLATTR, WS_DEFAULT_MONOATTR, WS_DEFAULT_BG and WS_DEFAULT_FG,
which specify the default colors for the console at boot time. These have
the same meaning as the (already existing) WS_KERNEL_* variables.

wsconsctl is modified to add msg.default.{attrs,bg,fg} and
msg.kernel.{attrs,bg,fg} to the display part, so that colors can be changed
after boot.

Tested on NetBSD/i386 with vga (and vga in mono mode), and on NetBSD/mac68k.
No objections in tech-kern@.

branches: 1.17.6;
remove trailing \n in panic(). approved perry.

switch/case KNF.

alloc_attr -> allocattr

Approved by Matthias Drochner.

branches: 1.14.10;
Fix a pasto in the last revision.

ANSIfy.

branches: 1.12.2; 1.12.4;
don't panic if there is ESC in kernel output, just print a warning and
ignore the ESC; also remove the #ifdef DIAGNOSTIC

replace embedded _rcsid[] string by __KERNEL_RCSID(), remove _copyright[]

branches: 1.10.8;
define a "clear screen" command to the emulator and complete the
emulation's "reset" implementations as far as useful

Change from bcopy/bzero to memxxx. From PR 6778 by
Erik Bertelsen <erik@q610.ebe.uni-c.dk>.

Change the calling interface for text output (to the graphics driver)
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.

add some more ASCII definitions, move NP->FF for consistency

Move the translation of keypad and function keys into the realm of the
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!

fix "Cursor Next Line (CNL)" (did the opposite)

Initialize the "curattr" member of the emulation data in early console
setup -- it is used to fill empty space.
Fixes 2/3 of PR kern/5457 (Jason Thorpe).

Simple screen attribute handling for wscons.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.

fix max() vs min() confusion at 2 places

Initial import of cgd's new wscons code.

add support for loading fonts in vcons and subsequently resizing screens
- drivers can use this by setting VCONS_LOADFONT and WSSCREEN_RESIZE
- each vcons screen can now have its own font and geometry
- while there, add support for xterm's ESC[18t to report the text buffer's
size

With this tou can:
wsfontload -N foo /usr/share/wscons/fonts/flori.816
wsconsctl -dw font=foo
currently this is limited to drivers that don't use the glyph cache, like genfb

Untangle.

branches: 1.28.38;
Add mappings for KS_End/KS_KP_End, so that the `End' key actually does
something.

branches: 1.27.2;
-rename the "KS_GROUP_Ascii" key symbol category to "Plain" because
this is what it meant all the time -- it includes characters >127
-delegate translation of all key symbols >127 to the terminal emulation
layer -- formerly everything non-special was passed to the tty subsystem
directly, involving truncation to a "char", which effectively meant
some ISO-1 assumption

branches: 1.26.52; 1.26.64; 1.26.72;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.24.2; 1.24.4;
fix incomplete struct decl.

branches: 1.23.4; 1.23.8;
merge ktrace-lwp.

branches: 1.22.2;
add const.

Adapt to recent constification.

If the driver supports reverse, try that first - even on color displays.
This removes a XXX and makes us independent of the users default colors.

branches: 1.19.10;
Remove include of "opt_wsmsgattrs.h" here, since that's already done
by wsdisplayvar.h. Fixes build problem for sparc.

Implement support to dynamically change wscons console and kernel colors.

Two new ioctls are added to the wsdisplay device, named WSDISPLAY_GMSGATTRS
and WSDISPLAY_SMSGATTRS, used to retrieve the actual values and set them,
respectively (the name, if you are wondering, comes from "message attributes").

A new emulop is added to the underlying display driver (only vga, for now)
which sets the new attribute for the whole screen, without having to clear
it. This is optional, which means that this also works with other drivers
that don't have this new operation.

Five new kernel options have been added, although only documented in
i386 kernels (for now):
- WSDISPLAY_CUSTOM_OUTPUT, which enables the ioctls described above to
change the colors dynamically from userland. This is enabled by default
in the GENERIC kernel (as well as others) but disabled on all INSTALL*
kernels (as this feature is useless there).
- WS_DEFAULT_COLATTR, WS_DEFAULT_MONOATTR, WS_DEFAULT_BG and WS_DEFAULT_FG,
which specify the default colors for the console at boot time. These have
the same meaning as the (already existing) WS_KERNEL_* variables.

wsconsctl is modified to add msg.default.{attrs,bg,fg} and
msg.kernel.{attrs,bg,fg} to the display part, so that colors can be changed
after boot.

Tested on NetBSD/i386 with vga (and vga in mono mode), and on NetBSD/mac68k.
No objections in tech-kern@.

branches: 1.17.6;
remove trailing \n in panic(). approved perry.

switch/case KNF.

alloc_attr -> allocattr

Approved by Matthias Drochner.

branches: 1.14.10;
Fix a pasto in the last revision.

ANSIfy.

branches: 1.12.2; 1.12.4;
don't panic if there is ESC in kernel output, just print a warning and
ignore the ESC; also remove the #ifdef DIAGNOSTIC

replace embedded _rcsid[] string by __KERNEL_RCSID(), remove _copyright[]

branches: 1.10.8;
define a "clear screen" command to the emulator and complete the
emulation's "reset" implementations as far as useful

Change from bcopy/bzero to memxxx. From PR 6778 by
Erik Bertelsen <erik@q610.ebe.uni-c.dk>.

Change the calling interface for text output (to the graphics driver)
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.

add some more ASCII definitions, move NP->FF for consistency

Move the translation of keypad and function keys into the realm of the
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!

fix "Cursor Next Line (CNL)" (did the opposite)

Initialize the "curattr" member of the emulation data in early console
setup -- it is used to fill empty space.
Fixes 2/3 of PR kern/5457 (Jason Thorpe).

Simple screen attribute handling for wscons.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.

fix max() vs min() confusion at 2 places

Initial import of cgd's new wscons code.

Untangle.

branches: 1.28.38;
Add mappings for KS_End/KS_KP_End, so that the `End' key actually does
something.

branches: 1.27.2;
-rename the "KS_GROUP_Ascii" key symbol category to "Plain" because
this is what it meant all the time -- it includes characters >127
-delegate translation of all key symbols >127 to the terminal emulation
layer -- formerly everything non-special was passed to the tty subsystem
directly, involving truncation to a "char", which effectively meant
some ISO-1 assumption

branches: 1.26.52; 1.26.64; 1.26.72;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.24.2; 1.24.4;
fix incomplete struct decl.

branches: 1.23.4; 1.23.8;
merge ktrace-lwp.

branches: 1.22.2;
add const.

Adapt to recent constification.

If the driver supports reverse, try that first - even on color displays.
This removes a XXX and makes us independent of the users default colors.

branches: 1.19.10;
Remove include of "opt_wsmsgattrs.h" here, since that's already done
by wsdisplayvar.h. Fixes build problem for sparc.

Implement support to dynamically change wscons console and kernel colors.

Two new ioctls are added to the wsdisplay device, named WSDISPLAY_GMSGATTRS
and WSDISPLAY_SMSGATTRS, used to retrieve the actual values and set them,
respectively (the name, if you are wondering, comes from "message attributes").

A new emulop is added to the underlying display driver (only vga, for now)
which sets the new attribute for the whole screen, without having to clear
it. This is optional, which means that this also works with other drivers
that don't have this new operation.

Five new kernel options have been added, although only documented in
i386 kernels (for now):
- WSDISPLAY_CUSTOM_OUTPUT, which enables the ioctls described above to
change the colors dynamically from userland. This is enabled by default
in the GENERIC kernel (as well as others) but disabled on all INSTALL*
kernels (as this feature is useless there).
- WS_DEFAULT_COLATTR, WS_DEFAULT_MONOATTR, WS_DEFAULT_BG and WS_DEFAULT_FG,
which specify the default colors for the console at boot time. These have
the same meaning as the (already existing) WS_KERNEL_* variables.

wsconsctl is modified to add msg.default.{attrs,bg,fg} and
msg.kernel.{attrs,bg,fg} to the display part, so that colors can be changed
after boot.

Tested on NetBSD/i386 with vga (and vga in mono mode), and on NetBSD/mac68k.
No objections in tech-kern@.

branches: 1.17.6;
remove trailing \n in panic(). approved perry.

switch/case KNF.

alloc_attr -> allocattr

Approved by Matthias Drochner.

branches: 1.14.10;
Fix a pasto in the last revision.

ANSIfy.

branches: 1.12.2; 1.12.4;
don't panic if there is ESC in kernel output, just print a warning and
ignore the ESC; also remove the #ifdef DIAGNOSTIC

replace embedded _rcsid[] string by __KERNEL_RCSID(), remove _copyright[]

branches: 1.10.8;
define a "clear screen" command to the emulator and complete the
emulation's "reset" implementations as far as useful

Change from bcopy/bzero to memxxx. From PR 6778 by
Erik Bertelsen <erik@q610.ebe.uni-c.dk>.

Change the calling interface for text output (to the graphics driver)
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.

add some more ASCII definitions, move NP->FF for consistency

Move the translation of keypad and function keys into the realm of the
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!

fix "Cursor Next Line (CNL)" (did the opposite)

Initialize the "curattr" member of the emulation data in early console
setup -- it is used to fill empty space.
Fixes 2/3 of PR kern/5457 (Jason Thorpe).

Simple screen attribute handling for wscons.
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.

fix max() vs min() confusion at 2 places

Initial import of cgd's new wscons code.