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authorPetar Jovanovic <petar.jovanovic@imgtec.com>2013-05-18 03:53:41 +0200
committerAurelien Jarno <aurelien@aurel32.net>2013-05-19 15:10:51 +0200
commit0ba365f4a9752a82502e829a3e8cb5f03a1ffc0c (patch)
tree7ca5a7b2d4a046505f12ebd588a597a7ac8528a7 /tests/tcg
parent489ed4bbae309a6d897f6e037481c4c04f0737b5 (diff)
target-mips: fix EXTPDP and setting up pos field in the DSPControl reg
This change makes sure that modifications of pos field in the DSPControl register do not trash other bits in the register. This bug can be triggered with the additional test case in mips32-dsp/extpdp.c in this commit. In addition to this, this change corrects incorrect calculation of the mask for EXTPDP. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tests/tcg')
-rw-r--r--tests/tcg/mips/mips32-dsp/extpdp.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/tcg/mips/mips32-dsp/extpdp.c b/tests/tcg/mips/mips32-dsp/extpdp.c
index 15ba0828fb..79ee16e8b8 100644
--- a/tests/tcg/mips/mips32-dsp/extpdp.c
+++ b/tests/tcg/mips/mips32-dsp/extpdp.c
@@ -42,5 +42,23 @@ int main()
efi = (dsp >> 14) & 0x01;
assert(efi == 1);
+
+ ach = 0;
+ acl = 0;
+ dsp = 0;
+ result = 0;
+
+ __asm
+ ("wrdsp %1\n\t"
+ "mthi %2, $ac1\n\t"
+ "mtlo %3, $ac1\n\t"
+ "extpdp %0, $ac1, 0x00\n\t"
+ "rddsp %1\n\t"
+ : "=r"(rt), "+r"(dsp)
+ : "r"(ach), "r"(acl)
+ );
+ assert(dsp == 0x3F);
+ assert(result == rt);
+
return 0;
}