[RFC PATCH 1/3] tcg/riscv: Fix base regsiter for qemu_ld/st

[LIU Zhiwei]

When guest base is zero, we should use addr_regl as base regiser instead of
the initial register TCG_REG_TMP0.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
 tcg/riscv/tcg-target.c.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index 81a83e45b1..32f4bc7bfc 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -1185,6 +1185,8 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg 
*args, bool is_64)
     }
     if (guest_base != 0) {
         tcg_out_opc_reg(s, OPC_ADD, base, TCG_GUEST_BASE_REG, addr_regl);
+    } else {
+        base = addr_regl;
     }
     tcg_out_qemu_ld_direct(s, data_regl, data_regh, base, opc, is_64);
 #endif
@@ -1257,6 +1259,8 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg 
*args, bool is_64)
     }
     if (guest_base != 0) {
         tcg_out_opc_reg(s, OPC_ADD, base, TCG_GUEST_BASE_REG, addr_regl);
+    } else {
+        base = addr_regl;
     }
     tcg_out_qemu_st_direct(s, data_regl, data_regh, base, opc);
 #endif
-- 
2.25.1