mirror of
https://github.com/yuzu-emu/unicorn.git
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70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/*
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* QEMU low level functions
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu-common.h"
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#include "qemu/cutils.h"
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#include "uc_priv.h"
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static int qemu_mprotect__osdep(struct uc_struct *uc, void *addr, size_t size, int prot)
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{
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g_assert(!((uintptr_t)addr & ~uc->qemu_real_host_page_mask));
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g_assert(!(size & ~uc->qemu_real_host_page_mask));
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#ifdef _WIN32
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DWORD old_protect;
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if (!VirtualProtect(addr, size, prot, &old_protect)) {
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//error_report("%s: VirtualProtect failed with error code %ld",
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// __func__, GetLastError());
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return -1;
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}
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return 0;
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#else
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if (mprotect(addr, size, prot)) {
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//error_report("%s: mprotect failed: %s", __func__, strerror(errno));
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return -1;
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}
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return 0;
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#endif
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}
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int qemu_mprotect_rwx(struct uc_struct *uc, void *addr, size_t size)
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{
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#ifdef _WIN32
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return qemu_mprotect__osdep(uc, addr, size, PAGE_EXECUTE_READWRITE);
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#else
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return qemu_mprotect__osdep(uc, addr, size, PROT_READ | PROT_WRITE | PROT_EXEC);
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#endif
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}
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int qemu_mprotect_none(struct uc_struct *uc, void *addr, size_t size)
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{
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#ifdef _WIN32
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return qemu_mprotect__osdep(uc, addr, size, PAGE_NOACCESS);
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#else
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return qemu_mprotect__osdep(uc, addr, size, PROT_NONE);
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#endif
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}
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