mirror of
https://github.com/Dadido3/noita-mapcap.git
synced 2024-11-22 21:17:33 +00:00
59 lines
1.6 KiB
Lua
59 lines
1.6 KiB
Lua
-- Copyright (c) 2022 David Vogel
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--
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-- This software is released under the MIT License.
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-- https://opensource.org/licenses/MIT
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local ffi = require("ffi")
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local Memory = {}
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if ffi.abi'64bit' then
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ffi.cdef([[
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typedef uint64_t __uint3264;
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]])
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else
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ffi.cdef([[
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typedef uint32_t __uint3264;
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]])
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end
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ffi.cdef([[
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typedef void VOID;
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typedef VOID *LPVOID;
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typedef int BOOL;
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typedef __uint3264 ULONG_PTR, *PULONG_PTR;
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typedef ULONG_PTR SIZE_T, *PSIZE_T;
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typedef unsigned long DWORD;
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typedef DWORD *PDWORD;
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BOOL VirtualProtect(LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, PDWORD lpflOldProtect);
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]])
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Memory.PAGE_NOACCESS = 0x01
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Memory.PAGE_READONLY = 0x02
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Memory.PAGE_READWRITE = 0x04
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Memory.PAGE_WRITECOPY = 0x08
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Memory.PAGE_EXECUTE = 0x10
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Memory.PAGE_EXECUTE_READ = 0x20
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Memory.PAGE_EXECUTE_READWRITE = 0x40
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Memory.PAGE_EXECUTE_WRITECOPY = 0x80
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Memory.PAGE_GUARD = 0x100
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Memory.PAGE_NOCACHE = 0x200
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Memory.PAGE_WRITECOMBINE = 0x400
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---Changes the protection on a region of committed pages in the virtual address space of the calling process.
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---@param addr ffi.cdata*
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---@param size integer
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---@param newProtect integer
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---@return ffi.cdata* oldProtect
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function Memory.VirtualProtect(addr, size, newProtect)
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local oldProtect = ffi.new('DWORD[1]')
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if not ffi.C.VirtualProtect(addr, size, newProtect, oldProtect) then
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error(string.format("failed to call VirtualProtect(%s, %s, %s)", addr, size, newProtect))
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end
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return oldProtect
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end
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return Memory
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