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[PULL 13/13] tcg/i386: Fix %r12 guest_base initialization


From: Alex Bennée
Subject: [PULL 13/13] tcg/i386: Fix %r12 guest_base initialization
Date: Tue, 7 Apr 2020 16:51:18 +0100

From: Richard Henderson <address@hidden>

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 <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
Tested-by: Alex Bennée <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Alex Bennée <address@hidden>

diff --git a/tcg/i386/tcg-target.inc.c b/tcg/i386/tcg-target.inc.c
index 7f61eeedd09..ec083bddcfb 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




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