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56 lines
2.1 KiB
56 lines
2.1 KiB
From b7440db8874a62631427d0b822922747bad9771b Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= <clg@redhat.com>
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Date: Tue, 23 May 2023 12:34:33 +0200
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Subject: [PATCH 09/22] s390x/tcg: Fix BRCL with a large negative offset
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Cédric Le Goater <clg@redhat.com>
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RH-MergeRequest: 279: Backport latest s390x-related fixes from upstream QEMU for qemu-kvm in RHEL 8.9
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RH-Bugzilla: 2169308 2209605
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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RH-Acked-by: David Hildenbrand <david@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Commit: [8/21] 60abe03ceba239268b72ff79e2945b73822fb72f
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Bugzilla: https://bugzilla.redhat.com/2169308
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commit 16ed5f14215b20c8dc49b96e2149032ba3238beb
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Author: Ilya Leoshkevich <iii@linux.ibm.com>
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Date: Mon Mar 14 11:42:31 2022 +0100
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s390x/tcg: Fix BRCL with a large negative offset
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When RI2 is 0x80000000, qemu enters an infinite loop instead of jumping
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backwards. Fix by adding a missing cast, like in in2_ri2().
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Fixes: 7233f2ed1717 ("target-s390: Convert BRANCH ON CONDITION")
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Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
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Message-Id: <20220314104232.675863-3-iii@linux.ibm.com>
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Reviewed-by: David Hildenbrand <david@redhat.com>
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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: Thomas Huth <thuth@redhat.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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---
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target/s390x/tcg/translate.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/target/s390x/tcg/translate.c b/target/s390x/tcg/translate.c
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index 8147d952df..7ff7f90e23 100644
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--- a/target/s390x/tcg/translate.c
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+++ b/target/s390x/tcg/translate.c
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@@ -1201,7 +1201,7 @@ static DisasJumpType help_branch(DisasContext *s, DisasCompare *c,
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bool is_imm, int imm, TCGv_i64 cdest)
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{
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DisasJumpType ret;
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- uint64_t dest = s->base.pc_next + 2 * imm;
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+ uint64_t dest = s->base.pc_next + (int64_t)imm * 2;
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TCGLabel *lab;
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/* Take care of the special cases first. */
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--
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2.37.3
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