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 0b7d6458c549eb216d96b0ea468543969bf67df6..92a30b791ab425f7fa2769f2c60798d29e36ecaa 100644 (file)
--- 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;