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target/s390x: Fix LCBB overwriting the top 32 bits

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LCBB is supposed to overwrite only the bottom 32 bits, but QEMU
erroneously overwrites the entire register.

Fixes: 6d9303322e ("s390x/tcg: Implement LOAD COUNT TO BLOCK BOUNDARY")
Cc: qemu-stable@nongnu.org
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20230526181240.1425579-2-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Ilya Leoshkevich 2023-05-26 20:12:37 +02:00 committed by Thomas Huth
parent 848a6caa88
commit 079181b9bc
1 changed files with 1 additions and 1 deletions
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2
target/s390x/tcg/insn-data.h.inc
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@ -486,7 +486,7 @@
F(0xb343, LCXBR, RRE, Z, x2h, x2l, new_P, x1_P, negf128, f128, IF_BFP)
F(0xb373, LCDFR, RRE, FPSSH, 0, f2, new, f1, negf64, 0, IF_AFP1 | IF_AFP2)
/* LOAD COUNT TO BLOCK BOUNDARY */
C(0xe727, LCBB, RXE, V, la2, 0, r1, 0, lcbb, 0)
C(0xe727, LCBB, RXE, V, la2, 0, new, r1_32, lcbb, 0)
/* LOAD HALFWORD */
C(0xb927, LHR, RRE, EI, 0, r2_16s, 0, r1_32, mov2, 0)
C(0xb907, LGHR, RRE, EI, 0, r2_16s, 0, r1, mov2, 0)