forked from OSchip/llvm-project
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* ===-- clear_cache.c - Implement __clear_cache ---------------------------===
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*
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* The LLVM Compiler Infrastructure
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*
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* This file is dual licensed under the MIT and the University of Illinois Open
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* Source Licenses. See LICENSE.TXT for details.
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*
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* ===----------------------------------------------------------------------===
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*/
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#include "int_lib.h"
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#if __APPLE__
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#include <libkern/OSCacheControl.h>
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#endif
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#if defined(__NetBSD__) && defined(__arm__)
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#include <machine/sysarch.h>
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#endif
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/*
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* The compiler generates calls to __clear_cache() when creating
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* trampoline functions on the stack for use with nested functions.
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* It is expected to invalidate the instruction cache for the
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* specified range.
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*/
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void __clear_cache(void* start, void* end)
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{
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#if __i386__ || __x86_64__
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/*
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* Intel processors have a unified instruction and data cache
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* so there is nothing to do
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*/
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#elif defined(__NetBSD__) && defined(__arm__)
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struct arm_sync_icache_args arg;
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arg.addr = (uintptr_t)start;
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arg.len = (uintptr_t)end - (uintptr_t)start;
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sysarch(ARM_SYNC_ICACHE, &arg);
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#else
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#if __APPLE__
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/* On Darwin, sys_icache_invalidate() provides this functionality */
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sys_icache_invalidate(start, end-start);
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#else
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compilerrt_abort();
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#endif
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#endif
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}
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