The existing code allocated 2 bytes (char*), but gtty() needs 6 bytes
(struct sgttyb), so isatty() smashed the stack and corrupted its
return address, probably causing SIGBUS or SIGSEGV.
Fix by switching to TIOCGETD, which needs 2 bytes. TIOCGETD isn't in
the manual for tty(4), but does appear in
https://minnie.tuhs.org//cgi-bin/utree.pl?file=V7/usr/sys/dev/tty.c
This fixes hilo_c.pdpv7 and hilo_mod.pdpv7 in simh-pdp11.
Change the alignment in C structs (wa, pa, sa, and so on) from 1 to 2
bytes. This prevents the SIGBUS when PDP-11 Unix V7 catches the
misalignment. This fixes hilo_p.pdpv7 in simh-pdp11.
Change ALIGN to document that sections have 2-byte alignment. This
change should have no effect, because the sections only contain 2-byte
values.
From my request at https://github.com/kstenerud/Musashi/pull/31
There was a conflict between Musahi's uint and OpenBSD's uint:
$ cc -o m68kmake m68kmake.c
$ ./m68kmake
$ cc -DM68K_COMPILE_FOR_MAME=0 -c m68kcpu.c
In file included from m68kcpu.c:565:
In file included from /usr/include/stdio.h:46:
/usr/include/sys/types.h:58:22: error: cannot combine with previous 'int'
declaration specifier
typedef unsigned int uint; /* Sys V compatibility */
^
./m68kcpu.h:75:25: note: expanded from macro 'uint'
#define uint unsigned int
^
1 error generated.
The code included <X11/Xfuncproto.h> only for _X_ATTRIBUTE_PRINTF,
which tells some compilers to check the printf format string. Remove
so ACK doesn't need any X11 headers.
Some machines don't have the X11 headers, or they need a flag like
-I/usr/X11R[67]/include to find them.
em libmon vanished decades ago (or never existed), and also ass appears to have
a different idea of what the em opcodes are to everything else and gets
confused.
This changes the BDOS call from CPM_BDOS_CONSOLE_INPUT to
CPN_BDOS_READ_CONSOLE_BUFFER. This allows commands like ^H to delete
characters and ^C to exit to CCP. This is more like how Unix read(2)
uses canonical mode of termios to read a line.
This change has a disadvantage: the user buffer to read(2) must now be
large enough for an entire line. This is because CP/M, unlike Unix,
lacks a kernel buffer to hold the rest of the line. If you use a
buffered input library like stdio to call read(2), then it works; but
if you try to read part of a line or a single character, then it
doesn't work.
