basic ELF output

1 files changed, 149 insertions, 0 deletions

diff --git a/elf.h b/elf.h
new file mode 100644
index 0000000..273b2fa
--- /dev/null
+++ b/elf.h
@@ -0,0 +1,149 @@
+#include "common.h"
+
+#define ELFMAG "\177ELF"
+enum {
+   ELFCLASS32 = 1,
+   ELFCLASS64 = 2,
+
+   ELFDATA2LSB = 1,
+   ELFDATA2MSB = 2,
+
+   ELFVERSION = 1,
+
+   ELFOSABI_SYSV       = 0,
+   ELFOSABI_ARM        = 97,
+   ELFOSABI_STANDALONE = 255,
+
+   ET_NONE = 0,
+   ET_REL, ET_EXEC, ET_DYN, ET_CORE,
+
+   EM_NONE         = 0,
+   EM_386          = 3,
+   EM_486          = 6,
+   EM_MIPS         = 8,
+   EM_MIPS_RS4_BE  = 0xA,
+   EM_ARM          = 0x28,
+   EM_X86_64       = 0x3E,
+   EM_ARM64        = 0xB7,
+};
+
+struct elfhdr {
+   uchar  i_mag[4],
+          i_class,
+          i_data,
+          i_version,
+          i_osabi,
+          i_abiversion,
+          i_pad[7];
+   ushort type,
+          machine;
+   uint   version;
+   uvlong entry,
+          phoff,
+          shoff;
+   uint   flags;
+   ushort ehsize,
+          phentsize,
+          phnum,
+          shentsize,
+          shnum,
+          shstrndx;
+};
+
+enum {
+   SHT_NULL          = 0x0,
+   SHT_PROGBITS      = 0x1,
+   SHT_SYMTAB        = 0x2,
+   SHT_STRTAB        = 0x3,
+   SHT_RELA          = 0x4,
+   SHT_HASH          = 0x5,
+   SHT_DYNAMIC       = 0x6,
+   SHT_NOTE          = 0x7,
+   SHT_NOBITS        = 0x8,
+   SHT_REL           = 0x9,
+   SHT_SHLIB         = 0xA,
+   SHT_DYNSYM        = 0xB,
+   SHT_INIT_ARRAY    = 0xE,
+   SHT_FINI_ARRAY    = 0xF,
+   SHT_PREINIT_ARRAY = 0x10,
+   SHT_GROUP         = 0x12,
+   SHT_SYMTAB_SHNDX  = 0x13,
+};
+
+enum {
+   SHF_WRITE            = 0x1,
+   SHF_ALLOC            = 0x2,
+   SHF_EXECINSTR        = 0x4,
+   SHF_MERGE            = 0x10,
+   SHF_STRINGS          = 0x20,
+   SHF_INFO_LINK        = 0x40,
+   SHF_LINK_ORDER       = 0x80,
+   SHF_OS_NONCONFORMING = 0x100,
+   SHF_GROUP            = 0x200,
+   SHF_TLS              = 0x400,
+};
+
+struct elfshdr {
+   uint   name,
+          type;
+   uvlong flags,
+          addr,
+          offset,
+          size;
+   uint   link,
+          info;
+   uvlong addralign,
+          entsize;
+};
+
+enum {
+   STB_LOCAL,
+   STB_GLOBAL,
+   STB_WEAK
+};
+
+enum {
+   STT_NOTYPE,
+   STT_OBJECT,
+   STT_FUNC,
+   STT_SECTION,
+   STT_FILE,
+};
+
+enum {
+   SHN_UND = 0,
+   SHN_ABS = 0xFFF1,
+};
+
+#define ELF_S_INFO(b,t) ((b) << 4 | (t))
+struct elfsym {
+   uint   name;
+   uchar  info,
+          other;
+   ushort shndx;
+   uvlong value,
+          size;
+};
+
+#define ELF_R_INFO(s,t) ((uvlong) (s) << 32 | (t))
+struct elfrel {
+   uvlong offset, info;
+};
+
+struct elfrela {
+   uvlong offset, info;
+   vlong addend;
+};
+
+struct elfphdr {
+   uint   type,
+          flags;
+   uvlong offset,
+          vaddr,
+          paddr,
+          filesz,
+          memsz,
+          align;
+};
+
+/* vim:set ts=3 sw=3 expandtab: */