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* Adapted R5900 COP2 interface code to clarified micro-mode interlock

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behavior.
This commit is contained in:
Frank Ch. Eigler 1998-04-16 19:27:55 +00:00
parent 73181dfff8
commit fc4e5b84c8
2 changed files with 16 additions and 4 deletions
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7
sim/mips/ChangeLog
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@ -1,3 +1,10 @@
start-sanitize-sky
Thu Apr 16 15:24:14 1998 Frank Ch. Eigler <fche@cygnus.com>
* interp.c (decode_coproc): Adapt COP2 micro interlock to
clarified specs. Reset "M" bit; exit also on "E" bit.
end-sanitize-sky
start-sanitize-r5900
Thu Apr 16 10:40:29 1998 Andrew Cagney <cagney@b1.cygnus.com>

13
sim/mips/interp.c
View File

@ -3316,12 +3316,17 @@ decode_coproc (SIM_DESC sd,
int rt = i_20_16;
int id = i_15_11;
/* interlock checking */
/* interlock checking: wait until M or E bits set */
/* POLICY: never busy in macro mode */
if(vu0_busy() && interlock)
while(vu0_busy() && interlock)
{
while(! vu0_micro_interlock_released())
vu0_issue(sd);
if(vu0_micro_interlock_released())
{
vu0_micro_interlock_clear();
break;
}
vu0_issue(sd);
}
/* perform VU register address */