bsd-user, linux-user: introduce qemu_process_cpu_events

Add a user-mode emulation version of the function.  More will be
added later, for now it is just process_queued_cpu_work.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

accel/tcg/user-exec.c

@@ -52,6 +52,11 @@ void qemu_cpu_kick(CPUState *cpu)
     tcg_kick_vcpu_thread(cpu);
 }
 
+void qemu_process_cpu_events(CPUState *cpu)
+{
+    process_queued_cpu_work(cpu);
+}
+
 /*
  * Adjust the pc to pass to cpu_restore_state; return the memop type.
  */

bsd-user/aarch64/target_arch_cpu.h

@@ -54,7 +54,7 @@ static inline G_NORETURN void target_cpu_loop(CPUARMState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_SWI:

bsd-user/arm/target_arch_cpu.h

@@ -46,7 +46,7 @@ static inline G_NORETURN void target_cpu_loop(CPUARMState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
         switch (trapnr) {
         case EXCP_UDEF:
         case EXCP_NOCP:

bsd-user/i386/target_arch_cpu.h

@@ -113,7 +113,7 @@ static inline G_NORETURN void target_cpu_loop(CPUX86State *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case 0x80: {

bsd-user/riscv/target_arch_cpu.h

@@ -49,7 +49,7 @@ static inline G_NORETURN void target_cpu_loop(CPURISCVState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         signo = 0;
 

bsd-user/x86_64/target_arch_cpu.h

@@ -121,7 +121,7 @@ static inline G_NORETURN void target_cpu_loop(CPUX86State *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_SYSCALL:

include/hw/core/cpu.h

@@ -1145,6 +1145,15 @@ AddressSpace *cpu_get_address_space(CPUState *cpu, int asidx);
 G_NORETURN void cpu_abort(CPUState *cpu, const char *fmt, ...)
     G_GNUC_PRINTF(2, 3);
 
+/**
+ * qemu_process_cpu_events:
+ * @cpu: CPU that left the execution loop
+ *
+ * Perform accelerator-independent work after the CPU has left
+ * the inner execution loop.
+ */
+void qemu_process_cpu_events(CPUState *cpu);
+
 /* $(top_srcdir)/cpu.c */
 void cpu_class_init_props(DeviceClass *dc);
 void cpu_exec_class_post_init(CPUClass *cc);

include/system/cpus.h

@@ -18,7 +18,6 @@ bool cpu_thread_is_idle(CPUState *cpu);
 bool all_cpu_threads_idle(void);
 bool cpu_can_run(CPUState *cpu);
 void qemu_process_cpu_events_common(CPUState *cpu);
-void qemu_process_cpu_events(CPUState *cpu);
 void cpu_thread_signal_created(CPUState *cpu);
 void cpu_thread_signal_destroyed(CPUState *cpu);
 void cpu_handle_guest_debug(CPUState *cpu);

linux-user/aarch64/cpu_loop.c

@@ -38,7 +38,7 @@ void cpu_loop(CPUARMState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_SWI:

linux-user/alpha/cpu_loop.c

@@ -35,7 +35,7 @@ void cpu_loop(CPUAlphaState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_RESET:

linux-user/arm/cpu_loop.c

@@ -295,7 +295,7 @@ void cpu_loop(CPUARMState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch(trapnr) {
         case EXCP_UDEF:

linux-user/hexagon/cpu_loop.c

@@ -36,7 +36,7 @@ void cpu_loop(CPUHexagonState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_INTERRUPT:

linux-user/hppa/cpu_loop.c

@@ -119,7 +119,7 @@ void cpu_loop(CPUHPPAState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_SYSCALL:

linux-user/i386/cpu_loop.c

@@ -214,7 +214,7 @@ void cpu_loop(CPUX86State *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch(trapnr) {
         case 0x80:

linux-user/loongarch64/cpu_loop.c

@@ -27,7 +27,7 @@ void cpu_loop(CPULoongArchState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_INTERRUPT:

linux-user/m68k/cpu_loop.c

@@ -33,7 +33,7 @@ void cpu_loop(CPUM68KState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch(trapnr) {
         case EXCP_ILLEGAL:

linux-user/microblaze/cpu_loop.c

@@ -32,7 +32,7 @@ void cpu_loop(CPUMBState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_INTERRUPT:

linux-user/mips/cpu_loop.c

@@ -74,7 +74,7 @@ void cpu_loop(CPUMIPSState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch(trapnr) {
         case EXCP_SYSCALL:

linux-user/openrisc/cpu_loop.c

@@ -33,7 +33,7 @@ void cpu_loop(CPUOpenRISCState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         switch (trapnr) {
         case EXCP_SYSCALL:

linux-user/ppc/cpu_loop.c

@@ -77,7 +77,7 @@ void cpu_loop(CPUPPCState *env)
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
+        qemu_process_cpu_events(cs);
 
         arch_interrupt = true;
         switch (trapnr) {