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// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// CPU specific code for arm independent of OS goes here.
#include <sys/syscall.h>
#include <unistd.h>
#if V8_TARGET_ARCH_RISCV64
#include "src/codegen/cpu-features.h"
namespace v8 {
namespace internal {
void CpuFeatures::FlushICache(void* start, size_t size) {
#if !defined(USE_SIMULATOR)
char* end = reinterpret_cast<char*>(start) + size;
// The definition of this syscall is
// SYSCALL_DEFINE3(riscv_flush_icache, uintptr_t, start,
// uintptr_t, end, uintptr_t, flags)
// The flag here is set to be SYS_RISCV_FLUSH_ICACHE_LOCAL, which is
// defined as 1 in the Linux kernel.
syscall(SYS_riscv_flush_icache, start, end, 1);
#endif // !USE_SIMULATOR.
}
} // namespace internal
} // namespace v8
#endif // V8_TARGET_ARCH_RISCV64
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