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accel/tcg: Declare cpu_loop_exit_requested() in 'exec/cpu-common.h'

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Move cpu_loop_exit_requested() declaration to "exec/cpu-common.h",
along with the related cpu_loop_exit_noexc(), cpu_loop_exit(),
cpu_loop_exit_atomic() and cpu_loop_exit_restore() methods.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241217140648.98538-1-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-12-17 14:47:19 +01:00
parent 5c09d295e0
commit 47f7b6441a
5 changed files with 21 additions and 18 deletions
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18
include/exec/cpu-common.h
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@ -186,6 +186,7 @@ int cpu_memory_rw_debug(CPUState *cpu, vaddr addr,
void list_cpus(void);
#ifdef CONFIG_TCG
#include "qemu/atomic.h"
bool tcg_cflags_has(CPUState *cpu, uint32_t flags);
void tcg_cflags_set(CPUState *cpu, uint32_t flags);
@ -218,6 +219,23 @@ bool cpu_unwind_state_data(CPUState *cpu, uintptr_t host_pc, uint64_t *data);
*/
bool cpu_restore_state(CPUState *cpu, uintptr_t host_pc);
/**
* cpu_loop_exit_requested:
* @cpu: The CPU state to be tested
*
* Indicate if somebody asked for a return of the CPU to the main loop
* (e.g., via cpu_exit() or cpu_interrupt()).
*
* This is helpful for architectures that support interruptible
* instructions. After writing back all state to registers/memory, this
* call can be used to check if it makes sense to return to the main loop
* or to continue executing the interruptible instruction.
*/
static inline bool cpu_loop_exit_requested(CPUState *cpu)
{
return (int32_t)qatomic_read(&cpu->neg.icount_decr.u32) < 0;
}
G_NORETURN void cpu_loop_exit_noexc(CPUState *cpu);
G_NORETURN void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc);
#endif /* CONFIG_TCG */