From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 13 Oct 2023 03:45:36 +0000 (-0700)
Subject: tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=cf0ed30eb10c7341fd1f253446e3bbb6e0114c30;p=qemu.git

tcg/riscv: Do not reserve TCG_GUEST_BASE_REG for guest_base zero

Fixes: 92c041c59b ("tcg/riscv: Add the prologue generation and register the JIT")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index d6dbcaf3cb..dc71f829d1 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -2076,8 +2076,10 @@ static void tcg_target_qemu_prologue(TCGContext *s)
     }
 
 #if !defined(CONFIG_SOFTMMU)
-    tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
-    tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+    if (guest_base) {
+        tcg_out_movi(s, TCG_TYPE_PTR, TCG_GUEST_BASE_REG, guest_base);
+        tcg_regset_set_reg(s->reserved_regs, TCG_GUEST_BASE_REG);
+    }
 #endif
 
     /* Call generated code */