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Diffstat (limited to 'tests/tcg/mips/mips32-dsp/extr_w.c')
-rw-r--r--tests/tcg/mips/mips32-dsp/extr_w.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/tcg/mips/mips32-dsp/extr_w.c b/tests/tcg/mips/mips32-dsp/extr_w.c
index 02ab9ecaae..bd6b0b95c2 100644
--- a/tests/tcg/mips/mips32-dsp/extr_w.c
+++ b/tests/tcg/mips/mips32-dsp/extr_w.c
@@ -44,5 +44,28 @@ int main()
assert(dsp == 0);
assert(result == rt);
+ /* Clear dspcontrol */
+ dsp = 0;
+ __asm
+ ("wrdsp %0\n\t"
+ :
+ : "r"(dsp)
+ );
+
+ ach = 0x3fffffff;
+ acl = 0x2bcdef01;
+ result = 0x7ffffffe;
+ __asm
+ ("mthi %2, $ac1\n\t"
+ "mtlo %3, $ac1\n\t"
+ "extr.w %0, $ac1, 0x1F\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;
}