* [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization
@ 2020-04-06 17:48 Richard Henderson
2020-04-06 18:13 ` Alex Bennée
0 siblings, 1 reply; 2+ messages in thread
From: Richard Henderson @ 2020-04-06 17:48 UTC (permalink / raw)
To: qemu-devel; +Cc: alex.bennee
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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization
2020-04-06 17:48 [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization Richard Henderson
@ 2020-04-06 18:13 ` Alex Bennée
0 siblings, 0 replies; 2+ messages in thread
From: Alex Bennée @ 2020-04-06 18:13 UTC (permalink / raw)
To: Richard Henderson; +Cc: qemu-devel
Richard Henderson <richard.henderson@linaro.org> writes:
> 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>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@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);
> }
> }
--
Alex Bennée
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-04-06 17:48 [PATCH for-5.0] tcg/i386: Fix %r12 guest_base initialization Richard Henderson
2020-04-06 18:13 ` Alex Bennée
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