1 files changed, 163 insertions, 0 deletions
diff --git a/src/loader/inc/elf.h b/src/loader/inc/elf.h
new file mode 100644
index 0000000..4b19f2f
--- /dev/null
+++ b/src/loader/inc/elf.h
@@ -0,0 +1,163 @@
+// MIT License, Copyright (c) 2021 Marvin Borner
+// According to spec
+
+#ifndef ELF_H
+#define ELF_H
+
+#include <def.h>
+#include <dev.h>
+
+#define ELF_MAG0 0x7F
+#define ELF_MAG1 'E'
+#define ELF_MAG2 'L'
+#define ELF_MAG3 'F'
+
+#define ELF_IDENT_COUNT 16
+#define ELF_IDENT_MAG0 0
+#define ELF_IDENT_MAG1 1
+#define ELF_IDENT_MAG2 2
+#define ELF_IDENT_MAG3 3
+
+#define ELF_IDENT_CLASS 4
+#define ELF_IDENT_CLASS_NONE 0
+#define ELF_IDENT_CLASS_32 1
+#define ELF_IDENT_CLASS_64 2
+
+#define ELF_IDENT_DATA 5
+#define ELF_IDENT_DATA_NONE 0
+#define ELF_IDENT_DATA_LSB 1
+#define ELF_IDENT_DATA_MSB 2
+
+#define ELF_IDENT_VERSION 6
+#define ELF_IDENT_OSABI 7
+#define ELF_IDENT_ABIVERSION 8
+#define ELF_IDENT_PAD 9
+
+#define ELF_ETYPE_NONE 0
+#define ELF_ETYPE_REL 1
+#define ELF_ETYPE_EXEC 2
+#define ELF_ETYPE_DYN 3
+#define ELF_ETYPE_CORE 4
+#define ELF_ETYPE_NUM 5
+
+#define ELF_MACHINE_NONE 0
+#define ELF_MACHINE_SPARC 2
+#define ELF_MACHINE_386 3
+#define ELF_MACHINE_SPARC32PLUS 18
+#define ELF_MACHINE_SPARCV9 43
+#define ELF_MACHINE_AMD64 62
+
+#define ELF_PROGRAM_TYPE_NULL 0
+#define ELF_PROGRAM_TYPE_LOAD 1
+#define ELF_PROGRAM_TYPE_DYNAMIC 2
+#define ELF_PROGRAM_TYPE_INTERP 3
+#define ELF_PROGRAM_TYPE_NOTE 4
+#define ELF_PROGRAM_TYPE_SHLIB 5
+#define ELF_PROGRAM_TYPE_PHDR 6
+#define ELF_PROGRAM_TYPE_TLS 7
+
+#define ELF_PROGRAM_FLAG_X 0x1
+#define ELF_PROGRAM_FLAG_W 0x2
+#define ELF_PROGRAM_FLAG_R 0x4
+
+#define ELF_SECTION_TYPE_NULL 0
+#define ELF_SECTION_TYPE_PROGBITS 1
+#define ELF_SECTION_TYPE_SYMTAB 2
+#define ELF_SECTION_TYPE_STRTAB 3
+#define ELF_SECTION_TYPE_RELA 4
+#define ELF_SECTION_TYPE_HASH 5
+#define ELF_SECTION_TYPE_DYNAMIC 6
+#define ELF_SECTION_TYPE_NOTE 7
+#define ELF_SECTION_TYPE_NOBITS 8
+#define ELF_SECTION_TYPE_REL 9
+#define ELF_SECTION_TYPE_SHLIB 10
+#define ELF_SECTION_TYPE_DYNSYM 11
+#define ELF_SECTION_TYPE_COUNT 12
+
+#define ELF_SECTION_FLAG_WRITE 0x1
+#define ELF_SECTION_FLAG_ALLOC 0x2
+#define ELF_SECTION_FLAG_EXEC 0x3
+#define ELF_SECTION_FLAG_MERGE 0x10
+#define ELF_SECTION_FLAG_STRINGS 0x20
+#define ELF_SECTION_FLAG_INFO_LINK 0x40
+#define ELF_SECTION_FLAG_LINK_ORDER 0x80
+#define ELF_SECTION_FLAG_OS_SPECIAL 0x100
+#define ELF_SECTION_FLAG_GROUP 0x200
+#define ELF_SECTION_FLAG_TLS 0x400
+#define ELF_SECTION_FLAG_COMPRESSED 0x800
+
+#define ELF_BSS ".bss"
+#define ELF_DATA ".data"
+#define ELF_DEBUG ".debug"
+#define ELF_DYNAMIC ".dynamic"
+#define ELF_DYNSTR ".dynstr"
+#define ELF_DYNSYM ".dynsym"
+#define ELF_FINI ".fini"
+#define ELF_GOT ".got"
+#define ELF_HASH ".hash"
+#define ELF_INIT ".init"
+#define ELF_REL_DATA ".rel.data"
+#define ELF_REL_FINI ".rel.fini"
+#define ELF_REL_INIT ".rel.init"
+#define ELF_REL_DYN ".rel.dyn"
+#define ELF_REL_RODATA ".rel.rodata"
+#define ELF_REL_TEXT ".rel.text"
+#define ELF_RODATA ".rodata"
+#define ELF_SHSTRTAB ".shstrtab"
+#define ELF_STRTAB ".strtab"
+#define ELF_SYMTAB ".symtab"
+#define ELF_TEXT ".text"
+
+struct elf_header {
+	u8 ident[ELF_IDENT_COUNT];
+	u16 type;
+	u16 machine;
+	u32 version;
+	u32 entry;
+	u32 phoff;
+	u32 shoff;
+	u32 flags;
+	u16 ehsize;
+	u16 phentsize;
+	u16 phnum;
+	u16 shentsize;
+	u16 shnum;
+	u16 shstrndx;
+} PACKED;
+
+struct elf_program {
+	u32 type;
+	u32 offset;
+	u32 vaddr;
+	u32 paddr;
+	u32 filesz;
+	u32 memsz;
+	u32 flags;
+	u32 align;
+} PACKED;
+
+struct elf_section {
+	u32 name;
+	u32 type;
+	u32 flags;
+	u32 addr;
+	u32 offset;
+	u32 size;
+	u32 link;
+	u32 info;
+	u32 addralign;
+	u32 entsize;
+} PACKED;
+
+struct elf_symbol {
+	u32 name;
+	u32 value;
+	u32 size;
+	u8 info;
+	u8 other;
+	u16 shndx;
+} PACKED;
+
+u32 elf_load(struct dev *dev, const char *path);
+
+#endif