From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: alex.bennee@linaro.org
Subject: [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization
Date: Mon, 6 Apr 2020 10:48:03 -0700 [thread overview]
Message-ID: <20200406174803.8192-1-richard.henderson@linaro.org> (raw)
When %gs cannot be used, we use register offset addressing.
This path is almost never used, so it was clearly not tested.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/i386/tcg-target.inc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index 7f61eeedd0..ec083bddcf 100644
--- a/tcg/i386/tcg-target.inc.c
+++ b/tcg/i386/tcg-target.inc.c
@@ -3737,7 +3737,7 @@ static void tcg_target_qemu_prologue(TCGContext *s)
} else {
/* Choose R12 because, as a base, it requires a SIB byte. */
x86_guest_base_index = TCG_REG_R12;
- tcg_out_mov(s, TCG_TYPE_PTR, x86_guest_base_index, guest_base);
+ tcg_out_movi(s, TCG_TYPE_PTR, x86_guest_base_index, guest_base);
tcg_regset_set_reg(s->reserved_regs, x86_guest_base_index);
}
}
--
2.20.1
next reply other threads:[~2020-04-06 18:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-06 17:48 Richard Henderson [this message]
2020-04-06 18:13 ` [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization Alex Bennée
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