motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 15:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target-mips: Fix for helpers for EXTR_* instructions

Browse source 
The change removes some unnecessary and incorrect code for EXTR_S.H.
Further, it corrects the mask for shift value in the EXTR_ instructions. It also
extends the existing tests so they trigger the issues corrected with the change.

Signed-off-by: Petar Jovanovic <petarj@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Petar Jovanovic 2012-12-10 16:28:17 +01:00 • committed by Aurelien Jarno
parent eec8972a5b
commit b8abbbe8df
9 changed files with 195 additions and 35 deletions
Download patch file Download diff file Expand all files Collapse all files

23
tests/tcg/mips/mips32-dsp/extr_s_h.c
View file

@ -59,5 +59,28 @@ int main()
assert(dsp == 0);
assert(result == rt);
/* Clear dsp */
dsp = 0;
__asm
("wrdsp %0\n\t"
:
: "r"(dsp)
);
ach = 0x123;
acl = 0x87654321;
result = 0x1238;
__asm
("mthi %2, $ac1\n\t"
"mtlo %3, $ac1\n\t"
"extr_s.h %0, $ac1, 28\n\t"
"rddsp %1\n\t"
: "=r"(rt), "=r"(dsp)
: "r"(ach), "r"(acl)
);
dsp = (dsp >> 23) & 0x01;
assert(dsp == 0);
assert(result == rt);
return 0;
}