user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h'

While each user emulation implentation defines its own
TaskState structure, both use the same get_task_state()
declaration, in particular in common code (such gdbstub).
Declare the method once in "accel/tcg/vcpu-state.h".

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-10-philmd@linaro.org>

accel/tcg/vcpu-state.h

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileContributor: Philippe Mathieu-Daudé <philmd@linaro.org>
+ * SPDX-FileCopyrightText: 2023 Linaro Ltd.
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+#ifndef ACCEL_TCG_VCPU_STATE_H
+#define ACCEL_TCG_VCPU_STATE_H
+
+#include "hw/core/cpu.h"
+
+#ifdef CONFIG_USER_ONLY
+static inline TaskState *get_task_state(const CPUState *cs)
+{
+    return cs->opaque;
+}
+#endif
+
+#endif

bsd-user/qemu.h

@@ -36,6 +36,7 @@ extern char **environ;
 #include "exec/gdbstub.h"
 #include "exec/page-protection.h"
 #include "qemu/clang-tsa.h"
+#include "accel/tcg/vcpu-state.h"
 
 #include "qemu-os.h"
 /*
@@ -116,11 +117,6 @@ struct TaskState {
     struct target_sigaltstack sigaltstack_used;
 } __attribute__((aligned(16)));
 
-static inline TaskState *get_task_state(CPUState *cs)
-{
-    return cs->opaque;
-}
-
 void stop_all_tasks(void);
 extern const char *interp_prefix;
 extern const char *qemu_uname_release;

linux-user/qemu.h

@@ -8,6 +8,7 @@
 
 #include "syscall_defs.h"
 #include "target_syscall.h"
+#include "accel/tcg/vcpu-state.h"
 
 /*
  * This is the size of the host kernel's sigset_t, needed where we make
@@ -160,11 +161,6 @@ struct TaskState {
     uint64_t start_boottime;
 };
 
-static inline TaskState *get_task_state(CPUState *cs)
-{
-    return cs->opaque;
-}
-
 abi_long do_brk(abi_ulong new_brk);
 int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *pathname,
                     int flags, mode_t mode, bool safe);