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[PATCH v7 25/31] tcg/loongarch64: Implement exit_tb/goto_tb


From: WANG Xuerui
Subject: [PATCH v7 25/31] tcg/loongarch64: Implement exit_tb/goto_tb
Date: Mon, 22 Nov 2021 18:41:55 +0800

Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/loongarch64/tcg-target.c.inc | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index a806e3352e..2d066a035d 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;
-- 
2.34.0




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