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s390x/tcg: Fix BRASL and BRCL with large negative offsets

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This is a backport of the following upstream commits:
- commit fc3dd86a290a ("s390x/tcg: Fix BRASL with a large negative offset")
- commit 16ed5f14215b ("s390x/tcg: Fix BRCL with a large negative offset")

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
This commit is contained in:
Ilya Leoshkevich
2022-03-14 23:39:04 +01:00
parent 3112cd920e
commit 7de130a5d7
1 changed files with 2 additions and 2 deletions
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4
qemu/target/s390x/translate.c
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@@ -1268,7 +1268,7 @@ static DisasJumpType help_branch(DisasContext *s, DisasCompare *c,
bool is_imm, int imm, TCGv_i64 cdest) bool is_imm, int imm, TCGv_i64 cdest)
{ {
DisasJumpType ret; DisasJumpType ret;
uint64_t dest = s->base.pc_next + 2 * imm; uint64_t dest = s->base.pc_next + (int64_t)imm * 2;
TCGLabel *lab; TCGLabel *lab;
TCGContext *tcg_ctx = s->uc->tcg_ctx; TCGContext *tcg_ctx = s->uc->tcg_ctx;
@@ -1606,7 +1606,7 @@ static DisasJumpType op_basi(DisasContext *s, DisasOps *o)
{ {
TCGContext *tcg_ctx = s->uc->tcg_ctx; TCGContext *tcg_ctx = s->uc->tcg_ctx;
pc_to_link_info(tcg_ctx, o->out, s, s->pc_tmp); pc_to_link_info(tcg_ctx, o->out, s, s->pc_tmp);
return help_goto_direct(s, s->base.pc_next + 2 * get_field(s, i2)); return help_goto_direct(s, s->base.pc_next + (int64_t)get_field(s, i2) * 2);
} }
static DisasJumpType op_bc(DisasContext *s, DisasOps *o) static DisasJumpType op_bc(DisasContext *s, DisasOps *o)