programs/return-42/.gitignore

@@ -1,3 +0,0 @@
-out.txt
-out.hex
-out

programs/return-42/00_elf_header.txt

@@ -1,76 +0,0 @@
-# ELF Header Setup
-# ================
-# 64 Bytes of Data Total
-
-# ELF Identifier
-# --------------
-# 16 Bytes of setup
-
-# Magic Numbers - EI_MAG[0-3]
-7f 45 4c 46
-
-# File Class - EI_CLASS - 64 Bit
-02
-
-# Data Encoding - EI_DATA - Little Endian
-01
-
-# File Version - EI_VERSION - Version 1
-01
-
-# Target ABI - EI_OSABI - Zero for static executables
-00
-
-# Target ABI Version - EI_ABIVERSION - Zero for static executables
-00
-
-# EI_PAD - 7 Padded Bytes
-00 00 00 00 00 00 00
-
-# Rest of the Header
-# ------------------
-
-# File Type - e_type - Executable binary
-02 00
-
-# Architecture - e_machine - AMD 64 Architecture
-3e 00
-
-# Version Spec - e_version - Version 1
-01 00 00 00
-
-# Entry Point Location - e_entry
-# 64 Bytes + 56 Bytes program header = 120 bytes
-78 00 40 00 00 00 00 00
-
-# Program Header Offset - e_phoff
-# Right after this header which is 64 Bytes
-40 00 00 00 00 00 00 00
-
-# Section Header Table Offset - e_shoff
-# We dont have one! no offset
-00 00 00 00 00 00 00 00
-
-# Processor Flags - e_flags - No flags set
-00 00 00 00
-
-# ELF Header Size - e_ehsize - 64 Bytes
-40 00
-
-# Program Header Entry Size - e_phentsize - 56 Bytes
-38 00
-
-# Program Header Count - e_phnum - 1 Header
-01 00
-
-# Section Header Entry Size - e_shentsize - 64 Bytes
-40 00
-
-# Section Header Count - e_shnum
-# Set to 3 based on example
-00 00
-
-##Section Header String Table Index - e_shstrndx
-# Set to 2 based on example
-00 00
-

programs/return-42/01_program_header.txt

@@ -1,37 +0,0 @@
-# Program header - 56 bytes
-# =========================
-
-# p_type - loadable segment
-01 00 00 00
-
-# p_flags - read and execute
-05 00 00 00
-
-# p_offset - load the entire program from the beginning
-# this will then include the ELF header and program header as well
-# could offset by the ELF and program header I guess
-# but leave it for now
-00 00 00 00 00 00 00 00
-
-# p_vaddr - virtual memory load position
-# this is a common place. Needs to be page aligned
-00 00 40 00 00 00 00 00
-
-# p_paddr - physical memory load position
-# not really used as far as i can tell - set to same as p_vaddr
-00 00 40 00 00 00 00 00
-
-# p_filesz - size of the file to load
-# This is to the end of the .text section, which for us is just
-# the program size, ELF header, and program header
-# so 64 + 56 + 16 = 136 = 0x88
-88 00 00 00 00 00 00 00
-
-# p_memsz - size of the file once loaded into memory
-# For us this is the same as above for now
-88 00 00 00 00 00 00 00
-
-# p_align - something to do with alignment, p_offset and p_vaddr
-# need more reading on that
-00 00 20 00 00 00 00 00
-

programs/return-42/02_program_code.txt

@@ -1,12 +0,0 @@
-# Program Code
-# ============
-
-# mov $60, %rax
-48 c7 c0 3c 00 00 00
-
-# mov $42, %rdi
-48 c7 c7 2a 00 00 00
-
-# syscall
-0f 05
-