From: WANG Xuerui <git@xen0n.name>
Date: Tue, 21 Dec 2021 05:40:59 +0000 (+0800)
Subject: tcg/loongarch64: Implement exit_tb/goto_tb
X-Git-Tag: v7.0.0-rc0~118^2~5
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=30d420e4d35eca26e61c57b21ddc5c9f34894846;p=thirdparty%2Fqemu.git

tcg/loongarch64: Implement exit_tb/goto_tb

Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211221054105.178795-26-git@xen0n.name>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 0b7d6458c54..92a30b791ab 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -980,6 +980,25 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
     int c2 = const_args[2];
 
     switch (opc) {
+    case INDEX_op_exit_tb:
+        /* Reuse the zeroing that exists for goto_ptr.  */
+        if (a0 == 0) {
+            tcg_out_call_int(s, tcg_code_gen_epilogue, true);
+        } else {
+            tcg_out_movi(s, TCG_TYPE_PTR, TCG_REG_A0, a0);
+            tcg_out_call_int(s, tb_ret_addr, true);
+        }
+        break;
+
+    case INDEX_op_goto_tb:
+        assert(s->tb_jmp_insn_offset == 0);
+        /* indirect jump method */
+        tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TMP0, TCG_REG_ZERO,
+                   (uintptr_t)(s->tb_jmp_target_addr + a0));
+        tcg_out_opc_jirl(s, TCG_REG_ZERO, TCG_REG_TMP0, 0);
+        set_jmp_reset_offset(s, a0);
+        break;
+
     case INDEX_op_mb:
         tcg_out_mb(s, a0);
         break;