From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@labs.coraid.com>
Date: Wed,  9 May 2012 10:30:48 -0400
To: 9fans@9fans.net
Message-ID: <8af7977ed4c3880061d6816bf2031186@coraid.com>
In-Reply-To: <CAE9W7-hWmuF5_s6=q=JVg=Gs6E0WtUs-nVUT=MRAp6QASejR-g@mail.gmail.c>
References: <CAE9W7-hWmuF5_s6=q=JVg=Gs6E0WtUs-nVUT=MRAp6QASejR-g@mail.gmail.c>
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Subject: Re: [9fans] 5i floating point?
Topicbox-Message-UUID: 86066380-ead7-11e9-9d60-3106f5b1d025

yes.  the instructions are not implemented.  unfortunately abort()
was called without flushing the output, so the error message wasn't
printed.

; diffy -c /sys/src/cmd/5i/run.c
/n/dump/2012/0509/sys/src/cmd/5i/run.c:260,265 - /sys/src/cmd/5i/run.c:260,266
  {
  	Bprint(bioout, "undefined instruction trap pc #%lux inst %.8lux class %d\n",
  		reg.r[REGPC], inst, reg.class);
+ Bflush(bioout);
  abort();
  	longjmp(errjmp, 0);
  }
; 5i 5.armfloat
5i
:r
undefined instruction trap pc #102c inst ed9b0100 class 92
5i 12535: suicide: sys: trap: fault read addr=0x0 pc=0xb2c5

- erik