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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org,
=?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= <philmd@linaro.org>
Subject: [PULL 10/84] tcg/i386: Mark Win64 call-saved vector regs as reserved
Date: Sun, 5 Mar 2023 16:38:40 -0800
Message-Id: <20230306003954.1866998-11-richard.henderson@linaro.org>
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While we do not include these in tcg_target_reg_alloc_order,
and therefore they ought never be allocated, it seems safer
to mark them reserved as well.
Reviewed-by: Philippe Mathieu-Daud=C3=A9 <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
tcg/i386/tcg-target.c.inc | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 028ece62a0..4060a35cf6 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -4218,6 +4218,19 @@ static void tcg_target_init(TCGContext *s)
=20
s->reserved_regs =3D 0;
tcg_regset_set_reg(s->reserved_regs, TCG_REG_CALL_STACK);
+#ifdef _WIN64
+ /* These are call saved, and we don't save them, so don't use them. */
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM6);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM7);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM8);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM9);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM10);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM11);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM12);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM13);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM14);
+ tcg_regset_set_reg(s->reserved_regs, TCG_REG_XMM15);
+#endif
}
=20
typedef struct {
--=20
2.34.1