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target-mips: Fix for helpers for EXTR_* instructions

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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
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25
tests/tcg/mips/mips32-dsp/extrv_r_w.c
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@ -50,5 +50,30 @@ int main()
assert(dsp == 0);
assert(result == rt);
/* Clear dspcontrol */
dsp = 0;
__asm
("wrdsp %0\n\t"
:
: "r"(dsp)
);
rs = 31;
ach = 0x3fffffff;
acl = 0x2bcdef01;
result = 0x7ffffffe;
__asm
("wrdsp %1, 0x01\n\t"
"mthi %3, $ac1\n\t"
"mtlo %4, $ac1\n\t"
"extrv_r.w %0, $ac1, %2\n\t"
"rddsp %1\n\t"
: "=r"(rt), "+r"(dsp)
: "r"(rs), "r"(ach), "r"(acl)
);
dsp = (dsp >> 23) & 0x01;
assert(dsp == 0);
assert(result == rt);
return 0;
}