The forward and backward pointers in an array block only contain
valid pointer values when the block is free therefore avoid
producing native addresses from these fields if the block is in use.
Add comments regarding the operation of the array block merging code
Array block merging will produce a single block if possible,
otherwise it will produce two blocks with one as large as possible
and the other no less than the minimum block size.
Rewrite the checks in array block merge forward to minimize unnecessary field accesses
While there was a definition for the pre-bigvm case, with 24-bit
pointers, for byteswapped (little-endian) systems, there was no
structure definition for the bigvm case, with 28-bit pointers.
On a Mac laptop (without a full keyboard) it isn't easy to generate
the delete in the ctrl-shift-delete user interrupt. The esc key is
in the same word and can easily be generated, so add ctrl-shift-esc
as an alternative.
The pathname for the display program is constructed to parallel the
path for "lde", which makes it more likely that the correct display
program will get run rather than
(a) not being found because "lde" wasn't found from the PATH, or
(b) a different version of the display program which was found from the PATH
No functional difference. Replaces a few leftover references to a prior
project name for the C implementation of the Lisp Virtual Machine with the
current name.
Remove unused #include "miscstat.h"
Make parameters of cursor_equal_p both const
Remove unnecessary extern declarations for EmKbdAd068K, EmRealUtilin68K, MiscStats
On slower filesystems/disks, an lseek() operation can consume
noticeable time. During initial sysout loading we can avoid an
unnecessary lseek() before each read() by tracking if the position it
will seek to is the same position that the previous read() left us.
* Changes needed to compile maiko on Alpine Linux with clang. Switching to Alpine on github actions to streamline maiko release builds
* Changes needed to compile maiko on Alpine Linux with clang.
Switching to Alpine on github actions to streamline maiko release builds.
* ether_nethub.c missing a couple of includes, and incorrectly including
<sys/poll.h> instead of plain <poll.h>
* <dirent.h> does not define MAXNAMLEN on Alpine Linux, but "locfile.h"
compensates for this already, if it is modified to include <limits.h>,
so use this in "dirdefs.h".
---------
Co-authored-by: Nick Briggs <nicholas.h.briggs@gmail.com>
Handle compilation with both SDL and XWINDOW defines
If both are defined then the -d/-display will accept
SDL as a display name and invoke ldesdl rather than ldex.
Improve error messages when display can't be opened
Use exit status 1 for all failures (vs. mixed 1, -1)
Rationalize the SDL.h include file references so that they work on all systems
Use the correct macOS Framework options to get include path and library search path
Add makefile fragments for SDL on macOS on Apple Silicon, plus FreeBSD and Linux
on same cpus as X11
Switch to gcc rather than clang as the default compiler for Linux systems
Use the Lisp type DLword where referring to data stored by Lisp
Access the extern EmCursorBitMap68K directly where appropriate.
Use GETBYTE() macro to correct for endian-ness of host system
when accessing the cursor bitmaps.
Cached cursors can use an ordering strategy that only promotes the
found item if it is third or later in the list since in normal
operation Medley is highly likely to flip back-and-forth between
two cursors.
sdl_bitblt_to_texture2 is an experiment, parallel to sdl_bitblt_to_texture
that only moves as many bits as are required, rather than rounding down(up) to the
nearest (16-bit) word boundary for the start(end) of the line.
Introduces some name changes to make things a little clearer.
Instead of checking "do_invert" at each pixel assignment, assign the
foreground and background colors appropriately when responding to the
(VIDEOCOLOR x) call.
Modify sdl_bitblt_to_texture() so that it does less arithmetic in the inner loop,
including using a table of masks rather than computing 1<<n on each pixel.
Modify sdl_bitblt_to_texture() so that it accesses the Lisp display region
16-bits at a time with the correct ordering for whether we are on a byte-swapped
system or not.
Adds an sdl_blt_to_window_surface() that goes directly from the Lisp bitmap
to the window surface avoiding the intermediate copy. This is only coded for a
scale factor of 1. Uses the intermediate buffer if the scale is not 1.
Corrects an error where the damage rectangle was not properly reset.
