What is a Mach-o file?

Mach-O is the native executable format of binaries in OS X and is the preferred format for shipping code. An executable format determines the order in which the code and data in a binary file are read into memory. A Mach-O binary is organized into segments. Each segment contains one or more sections.

What is in an ELF file?

Each ELF file is made up of one ELF header, followed by file data. The data can include: Program header table, describing zero or more memory segments. Section header table, describing zero or more sections.

Does Mac use ELF?

Among those formats listed, the ones in most common use are PE (on Microsoft Windows), ELF (on Linux and most other versions of Unix), Mach-O (on macOS and iOS) and MZ (on DOS).

What are ELF sections?

A section is the smallest unit of an object that can be relocated. Use the elfdump command to inspect the components of an object or executable file generated by the assembler. The following sections are commonly present in an ELF file: Section header.

What are portable executable files?

The Portable Executable (PE) format is a file format for executables, object code, DLLs and others used in 32-bit and 64-bit versions of Windows operating systems. The PE format is a data structure that encapsulates the information necessary for the Windows OS loader to manage the wrapped executable code.

How do I run a binary file in Terminal Mac?

1. Press “Enter” on the keyboard after every command you enter into Terminal.
2. You can also execute a file without changing to its directory by specifying the full path. Type “/path/to/NameOfFile” without quotation marks at the command prompt. Remember to set the executable bit using the chmod command first.

What is Arduino elf file?

Using Arduino Microcontrollers. sreedevk April 6, 2015, 9:27am #1. Recently I came to know that ELF file can hold the flash, fuse/lock as well as EEPROM contents in a single file which comes handy in many cases. avr/fuse.h allows the fuse bits to be set in code.

What is PE and ELF?

Thus, while the ELF executable contains program headers which instruct how the data (and sections) are to be mapped into memory segments, the PE format simply maps relevant sections into memory.

How is ELF file created?

The compiler (i.e. gcc or g++ ) will invoke the linker ( ld ) which produces an ELF executable. In practice, you will use a builder program (like make ) to drive gcc commands. See this answer. The default output file for gcc is still named a.

What is entry point of a PE executable?

The PE entry point is defined in the IMAGE_OPTIONAL_HEADER structure, in the AddressOfEntryPoint field: A pointer to the entry point function, relative to the image base address. For executable files, this is the starting address. For device drivers, this is the address of the initialization function.