plugins: add new inline op STORE_U64

This new operation can store an immediate u64 value to a given
scoreboard.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240502211522.346467-4-pierrick.bouvier@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240514174253.694591-6-alex.bennee@linaro.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/accel/tcg/plugin-gen.c b/accel/tcg/plugin-gen.c
index f2edeac8f1..2cd0e36187 100644
--- a/accel/tcg/plugin-gen.c
+++ b/accel/tcg/plugin-gen.c
@@ -145,6 +145,16 @@ static void gen_inline_add_u64_cb(struct qemu_plugin_dyn_cb *cb)
     tcg_temp_free_ptr(ptr);
 }
 
+static void gen_inline_store_u64_cb(struct qemu_plugin_dyn_cb *cb)
+{
+    TCGv_ptr ptr = gen_plugin_u64_ptr(cb->inline_insn.entry);
+    TCGv_i64 val = tcg_constant_i64(cb->inline_insn.imm);
+
+    tcg_gen_st_i64(val, ptr, 0);
+
+    tcg_temp_free_ptr(ptr);
+}
+
 static void gen_mem_cb(struct qemu_plugin_dyn_cb *cb,
                        qemu_plugin_meminfo_t meminfo, TCGv_i64 addr)
 {
@@ -170,6 +180,9 @@ static void inject_cb(struct qemu_plugin_dyn_cb *cb)
     case PLUGIN_CB_INLINE_ADD_U64:
         gen_inline_add_u64_cb(cb);
         break;
+    case PLUGIN_CB_INLINE_STORE_U64:
+        gen_inline_store_u64_cb(cb);
+        break;
     default:
         g_assert_not_reached();
     }