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commit 9545e9f96beda6e9f2205bdb3c3e96edaf8d9e2b
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Author: Andreas Arnez <arnez@linux.ibm.com>
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
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Date: Tue Oct 30 17:06:38 2018 +0100
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Bug 400491 s390x: Sign-extend immediate operand of LOCHI and friends
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The VEX implementation of each of the z/Architecture instructions LOCHI,
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LOCHHI, and LOCGHI treats the immediate 16-bit operand as an unsigned
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integer instead of a signed integer. This is fixed.
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diff
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index 60b6081..9c4d79b 100644
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@@ -16307,7 +16307,7 @@ static const HChar *
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s390_irgen_LOCHHI(UChar r1, UChar m3, UShort i2, UChar unused)
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{
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next_insn_if(binop(Iop_CmpEQ32, s390_call_calculate_cond(m3), mkU32(0)));
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- put_gpr_w0(r1, mkU32(i2));
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+ put_gpr_w0(r1, mkU32((UInt)(Int)(Short)i2));
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return "lochhi";
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}
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@@ -16316,7 +16316,7 @@ static const HChar *
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s390_irgen_LOCHI(UChar r1, UChar m3, UShort i2, UChar unused)
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{
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next_insn_if(binop(Iop_CmpEQ32, s390_call_calculate_cond(m3), mkU32(0)));
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- put_gpr_w1(r1, mkU32(i2));
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+ put_gpr_w1(r1, mkU32((UInt)(Int)(Short)i2));
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return "lochi";
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}
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@@ -16325,7 +16325,7 @@ static const HChar *
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s390_irgen_LOCGHI(UChar r1, UChar m3, UShort i2, UChar unused)
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{
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next_insn_if(binop(Iop_CmpEQ32, s390_call_calculate_cond(m3), mkU32(0)));
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- put_gpr_dw0(r1, mkU64(i2));
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+ put_gpr_dw0(r1, mkU64((UInt)(Int)(Short)i2));
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return "locghi";
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}
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