d0p1/ack - Cute Engineering : Cute solutions to hard problems

d0p1/ack

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Author	SHA1	Message	Date
George Koehler	5db312a1c0	Prevent crash in isatty() 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.	2018-06-15 00:48:29 -04:00
David Given	4b5a7fee14	Made the cgg and the cg code generator work; use this to beat the PDP/11 backend into shape. It now generates binaries --- no idea whether they work or not.	2018-02-23 22:31:46 +01:00

Author

SHA1

Message

Date

George Koehler

5db312a1c0

Prevent crash in isatty()

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.

2018-06-15 00:48:29 -04:00

David Given

4b5a7fee14

Made the cgg and the cg code generator work; use this to beat the PDP/11

backend into shape. It now generates binaries --- no idea whether they work or
not.

2018-02-23 22:31:46 +01:00

2 commits