[PATCH v6 10/30] tcg/loongarch64: Implement goto_ptr

From: WANG Xuerui <git@xen0n.name>
To: qemu-devel@nongnu.org
Cc: "Peter Maydell" <peter.maydell@linaro.org>,
	"XiaoJuan Yang" <yangxiaojuan@loongson.cn>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Song Gao" <gaosong@loongson.cn>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
	"WANG Xuerui" <git@xen0n.name>,
	"Laurent Vivier" <laurent@vivier.eu>
Subject: [PATCH v6 10/30] tcg/loongarch64: Implement goto_ptr
Date: Sun, 26 Sep 2021 01:30:12 +0800	[thread overview]
Message-ID: <20210925173032.2434906-11-git@xen0n.name> (raw)
In-Reply-To: <20210925173032.2434906-1-git@xen0n.name>

Signed-off-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/loongarch64/tcg-target-con-set.h | 17 +++++++++++++++++
 tcg/loongarch64/tcg-target.c.inc     | 15 +++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 tcg/loongarch64/tcg-target-con-set.h

diff --git a/tcg/loongarch64/tcg-target-con-set.h b/tcg/loongarch64/tcg-target-con-set.h
new file mode 100644
index 0000000000..5cc4407367
--- /dev/null
+++ b/tcg/loongarch64/tcg-target-con-set.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Define LoongArch target-specific constraint sets.
+ *
+ * Copyright (c) 2021 WANG Xuerui <git@xen0n.name>
+ *
+ * Based on tcg/riscv/tcg-target-con-set.h
+ *
+ * Copyright (c) 2021 Linaro
+ */
+
+/*
+ * C_On_Im(...) defines a constraint set with <n> outputs and <m> inputs.
+ * Each operand should be a sequence of constraint letters as defined by
+ * tcg-target-con-str.h; the constraint combination is inclusive or.
+ */
+C_O0_I1(r)
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc
index 4487851b5e..17f869dbd2 100644
--- a/tcg/loongarch64/tcg-target.c.inc
+++ b/tcg/loongarch64/tcg-target.c.inc
@@ -397,9 +397,24 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
         tcg_out_mb(s, a0);
         break;
 
+    case INDEX_op_goto_ptr:
+        tcg_out_opc_jirl(s, TCG_REG_ZERO, a0, 0);
+        break;
+
     case INDEX_op_mov_i32:  /* Always emitted via tcg_out_mov.  */
     case INDEX_op_mov_i64:
     default:
         g_assert_not_reached();
     }
 }
+
+static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
+{
+    switch (op) {
+    case INDEX_op_goto_ptr:
+        return C_O0_I1(r);
+
+    default:
+        g_assert_not_reached();
+    }
+}
-- 
2.33.0


