diff mbox series

[v2,26/30] tcg/i386: Mark Win64 call-saved vector regs as reserved

Message ID 20230216025739.1211680-27-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: Improve atomicity support | expand

Commit Message

Richard Henderson Feb. 16, 2023, 2:57 a.m. UTC 
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-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/i386/tcg-target.c.inc | 13 +++++++++++++
 1 file changed, 13 insertions(+)
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Patch

diff --git a/tcg/i386/tcg-target.c.inc b/tcg/i386/tcg-target.c.inc
index 5dcea7e198..21442c9339 100644
--- a/tcg/i386/tcg-target.c.inc
+++ b/tcg/i386/tcg-target.c.inc
@@ -4232,6 +4232,19 @@  static void tcg_target_init(TCGContext *s)
 
     s->reserved_regs = 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
 }
 
 typedef struct {