Alan Cox wrote:
Well, original C allowed you to do what you wanted with pointers (I used
to teach that back when K&R was "the" C manual). Now people which about
having pointers outside the array, which is a crock in practice, as long
as you don't actually /use/ an out of range value.
Actually the standards had good reasons to bar this use, because many
runtime environments used segmentation and unsigned segment offsets. On a
286 you could get into quite a mess with out of array reference tricks.
variable with the address of the start. I was more familiar with the B
stuff, I wrote both the interpreter and the code generator+library for
the 8080 and GE600 machines. B on MULTICS, those were the days... :-D
B on Honeywell L66, so that may well have been a relative of your code
generator ?
Probably the Bell Labs one. I did an optimizer on the Pcode which caught
jumps to jumps, then had separate 8080 and L66 code generators into GMAP
on the GE and the CP/M assembler or the Intel (ISIS) assembler for 8080.
There was also an 8085 code generator using the "ten undocumented
instructions" from the Dr Dobbs article. GE actually had a contract with
Intel to provide CPUs with those instructions, and we used them in the
Terminet(r) printers.
Those were the days ;-)
--
Bill Davidsen <[email protected]>
"Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
