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/* =========================================
Copyright (C) 2024-2025 Amlal El Mahrouss, licensed under the Apache 2.0 license
======================================== */
#pragma once
#include <CompilerKit/Detail/Config.h>
#include <fstream>
// @file PEF.h
// @brief Preferred Executable Format
#define kPefMagic "Open"
#define kPefMagicFat "nepO"
#define kPefExt ".exec"
#define kPefDylibExt ".dylib"
#define kPefLibExt ".lib"
#define kPefObjectExt ".obj"
#define kPefDebugExt ".dbg"
#define kPefDriverExt ".sys"
#define kPefZero128 ".zero128"
#define kPefCode128 ".code128"
#define kPefData128 ".data128"
#define kPefZero64 ".zero64"
#define kPefCode64 ".code64"
#define kPefData64 ".data64"
/* @note counting the \0 at the end */
#define kPefMagicLen (5)
#define kPefVersion (0x0500)
#define kPefNameLen (255)
#define kPefBaseOrigin (0x40000000)
/* @note this doesn't have to be __ImageStart only, any C initialization stub will do. */
#define kPefStart "__ImageStart"
namespace CompilerKit {
/* @brief Architecture type. */
enum {
kPefArchIntel86S,
kPefArchAMD64,
kPefArchRISCV,
kPefArch64000, /* Open64x0 RISC architecture. */
kPefArch32000,
kPefArchPowerPC, /* 64-bit POWER architecture. */
kPefArchARM64,
kPefArchCount = (kPefArchARM64 - kPefArchIntel86S) + 1,
kPefArchInvalid = 0xFF,
};
/* @brief Architecture vendor. */
enum {
kPefSubArchGeneric = 0,
kPefSubArchAMD = 200,
kPefSubArchIntel,
kPefSubArchARM,
kPefSubArchIBM,
};
enum {
kPefKindInvalid = 0,
kPefKindExec = 1, /* .exec */
kPefKindDylib = 2, /* .dylib */
kPefKindObject = 4, /* .obj */
kPefKindDebug = 5, /* .dbg */
kPefKindDriver = 6,
kPefKindCount,
};
/* PEF container information */
typedef struct PEFContainer final {
Char Magic[kPefMagicLen];
UInt32 Linker; /* Linker used to link executable */
UInt32 Version;
UInt32 Kind;
UInt32 Abi;
UInt32 Cpu;
UInt32 SubCpu; /* Cpu specific information */
UIntPtr Start; /* Origin of code */
SizeType HdrSz; /* Size of header */
SizeType Count; /* container header count */
UInt32 Checksum; /* Whole binary checksum */
} PACKED PEFContainer, *PEFContainerPtr;
/* First PEFCommandHeader starts after PEFContainer */
/* Last container is __exec_end */
/* PEF executable section and commands. */
/* @brief Command Header, a la Mach-O, designed with FAT binaries and virtual memory in mind. */
typedef struct PEFCommandHeader final {
Char Name[kPefNameLen]; /* container name */
UInt32 Cpu; /* container cpu */
UInt32 SubCpu; /* container sub-cpu */
UInt32 Flags; /* container flags */
UInt16 Kind; /* container kind */
UIntPtr Offset; /* File offset */
SizeType OffsetSize;
UIntPtr VirtualAddress; /* Virtual Address */
SizeType VirtualSize; /* Virtual Size */
} PACKED PEFCommandHeader, *PEFCommandHeaderPtr;
enum {
kPefInvalid = 0x0,
kPefCode = 0xC,
kPefData = 0xD,
kPefZero = 0xE,
kPefLinkerID = 0x1,
kPefCount = 4,
};
} // namespace CompilerKit
inline std::ofstream& operator<<(std::ofstream& fp, CompilerKit::PEFContainer& container) {
fp.write((char*) &container, sizeof(CompilerKit::PEFContainer));
return fp;
}
inline std::ofstream& operator<<(std::ofstream& fp, CompilerKit::PEFCommandHeader& container) {
fp.write((char*) &container, sizeof(CompilerKit::PEFCommandHeader));
return fp;
}
inline std::ifstream& operator>>(std::ifstream& fp, CompilerKit::PEFContainer& container) {
fp.read((char*) &container, sizeof(CompilerKit::PEFContainer));
return fp;
}
inline std::ifstream& operator>>(std::ifstream& fp, CompilerKit::PEFCommandHeader& container) {
fp.read((char*) &container, sizeof(CompilerKit::PEFCommandHeader));
return fp;
}
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