plugins/api: split out binary path/start/end/entry code

To move the main api.c to a single build compilation object we need to
start splitting out user and system specific code. As we need to grob
around host headers we move these particular helpers into the *-user
mode directories.

The binary/start/end/entry helpers are all NOPs for system mode.

While using the plugin-api.c.inc trick means we build for both
linux-user and bsd-user the BSD user-mode command line is still
missing -plugin. This can be enabled once we have reliable check-tcg
tests working for the BSDs.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250304222439.2035603-27-alex.bennee@linaro.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/common-user/plugin-api.c.inc b/common-user/plugin-api.c.inc
new file mode 100644
index 0000000000..5b8a1396b6
--- /dev/null
+++ b/common-user/plugin-api.c.inc
@@ -0,0 +1,43 @@
+/*
+ * QEMU Plugin API - *-user-mode only implementations
+ *
+ * Common user-mode only APIs are in plugins/api-user. These helpers
+ * are only specific to the *-user frontends.
+ *
+ * Copyright (C) 2017, Emilio G. Cota <cota@braap.org>
+ * Copyright (C) 2019-2025, Linaro
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/main-loop.h"
+#include "qemu/plugin.h"
+#include "qemu.h"
+
+/*
+ * Binary path, start and end locations. Host specific due to TaskState.
+ */
+const char *qemu_plugin_path_to_binary(void)
+{
+    TaskState *ts = get_task_state(current_cpu);
+    return g_strdup(ts->bprm->filename);
+}
+
+uint64_t qemu_plugin_start_code(void)
+{
+    TaskState *ts = get_task_state(current_cpu);
+    return ts->info->start_code;
+}
+
+uint64_t qemu_plugin_end_code(void)
+{
+    TaskState *ts = get_task_state(current_cpu);
+    return ts->info->end_code;
+}
+
+uint64_t qemu_plugin_entry_code(void)
+{
+    TaskState *ts = get_task_state(current_cpu);
+    return ts->info->entry;
+}