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https://github.com/jart/cosmopolitan.git
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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
81 lines
5.6 KiB
C
81 lines
5.6 KiB
C
#ifndef COSMOPOLITAN_LIBC_NT_MEMORY_H_
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#define COSMOPOLITAN_LIBC_NT_MEMORY_H_
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#include "libc/nt/enum/filemapflags.h"
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#include "libc/nt/enum/memflags.h"
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#include "libc/nt/enum/offerpriority.h"
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#include "libc/nt/enum/pageflags.h"
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#include "libc/nt/thunk/msabi.h"
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#if 0
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╔────────────────────────────────────────────────────────────────▀▀▀─────────│─╗
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│ cosmopolitan § new technology » memory ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#endif
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#define kNtNumaNoPreferredNode 0xffffffff
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct NtMemoryBasicInformation;
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struct NtMemoryRangeEntry;
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struct NtSecurityAttributes;
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int64_t CreateFileMappingNuma(
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int64_t opt_hFile /* -1ul is MAP_ANONYMOUS */,
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const struct NtSecurityAttributes *opt_lpFileMappingAttributes,
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uint32_t flProtect, uint32_t dwMaximumSizeHigh, uint32_t dwMaximumSizeLow,
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const char16_t *opt_lpName, uint32_t nndDesiredNumaNode);
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void *MapViewOfFileExNuma(
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int64_t hFileMappingObject, /* @see CreateFileMapping() */
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uint32_t dwDesiredAccess, uint32_t dwFileOffsetHigh, /* high order bits */
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uint32_t dwFileOffsetLow, /* low order bits */
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size_t dwNumberOfBytesToMap, void *opt_lpDesiredBaseAddress,
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uint32_t nndDesiredNumaNode);
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bool32 UnmapViewOfFile(const void *lpBaseAddress);
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bool32 FlushViewOfFile(const void *lpBaseAddress,
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size_t dwNumberOfBytesToFlush);
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void *VirtualAlloc(void *opt_lpAddress, uint64_t dwSize,
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uint32_t flAllocationType, uint32_t flProtect);
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bool32 VirtualFree(void *lpAddress, uint64_t dwSize, uint32_t dwFreeType);
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bool32 VirtualProtect(void *lpAddress, uint64_t dwSize, uint32_t flNewProtect,
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uint32_t *lpflOldProtect) paramsnonnull();
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uint64_t VirtualQuery(const void *lpAddress,
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struct NtMemoryBasicInformation *lpBuffer,
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uint64_t dwLength);
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void *VirtualAllocEx(int64_t hProcess, void *lpAddress, uint64_t dwSize,
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uint32_t flAllocationType, uint32_t flProtect);
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bool32 PrefetchVirtualMemory(int64_t hProcess, const uint32_t *NumberOfEntries,
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struct NtMemoryRangeEntry *VirtualAddresses,
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uint32_t reserved_Flags);
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bool32 OfferVirtualMemory(void *inout_VirtualAddress, size_t Size,
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enum NtOfferPriority Priority);
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#if ShouldUseMsabiAttribute()
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#include "libc/nt/thunk/memory.inc"
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#endif /* ShouldUseMsabiAttribute() */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_NT_MEMORY_H_ */
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