mirror of
https://github.com/jart/cosmopolitan.git
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529cb4817c
- Introduce MAP_JIT which is zero on other platforms - Invent __jit_begin() and __jit_end() which wrap Apple's APIs - Runtime dispatch to sys_icache_invalidate() in __clear_cache()
37 lines
2.2 KiB
C
37 lines
2.2 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dce.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/syslib.internal.h"
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void __jit_begin(void) {
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if (IsXnuSilicon()) {
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if (__syslib->__pthread_jit_write_protect_supported_np()) {
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__syslib->__pthread_jit_write_protect_np(false);
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}
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}
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}
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void __jit_end(void) {
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if (IsXnuSilicon()) {
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if (__syslib->__pthread_jit_write_protect_supported_np()) {
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__syslib->__pthread_jit_write_protect_np(true);
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}
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}
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}
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