diff options
| author | pommicket <pommicket@gmail.com> | 2022-11-04 13:02:56 -0400 |
|---|---|---|
| committer | pommicket <pommicket@gmail.com> | 2022-11-04 13:02:56 -0400 |
| commit | 05de0fe271024ba67aa265974bc4d456dbfa3eba (patch) | |
| tree | c0911e9bd3f27ab78df2120aa78b2c5a8ea94a4e /src/elf.rs | |
| parent | 09e8d960e56efc3c6e00d3bcc6dd812d015bb4fe (diff) | |
start undefined relocations
Diffstat (limited to 'src/elf.rs')
| -rw-r--r-- | src/elf.rs | 33 |
1 files changed, 28 insertions, 5 deletions
@@ -6,6 +6,27 @@ use std::{io, mem}; pub const ET_REL: u16 = 1; pub const ET_EXEC: u16 = 2; +// segment type +pub const PT_LOAD: u32 = 1; +// segment flags +pub const PF_X: u32 = 1 << 0; +pub const PF_W: u32 = 1 << 1; +pub const PF_R: u32 = 1 << 2; + + +pub const DT_NEEDED: u32 = 1; +pub const DT_HASH: u32 = 4; +pub const DT_STRTAB: u32 = 5; +pub const DT_SYMTAB: u32 = 6; +pub const DT_STRSZ: u32 = 10; +pub const DT_SYMENT: u32 = 11; +pub const DT_REL: u32 = 17; +pub const DT_RELSZ: u32 = 18; +pub const DT_RELENT: u32 = 19; + +pub const PT_DYNAMIC: u32 = 2; +pub const PT_INTERP: u32 = 3; + #[allow(unused)] pub const SHT_PROGBITS: u32 = 1; // Program data #[allow(unused)] @@ -40,7 +61,7 @@ pub const SHN_ABS: u16 = 0xfff1; pub const SHN_COMMON: u16 = 0xfff2; #[repr(C)] -pub struct Header32 { +pub struct Ehdr32 { pub ident: [u8; 4], pub class: u8, pub data: u8, @@ -63,7 +84,7 @@ pub struct Header32 { pub shstrndx: u16, } -impl Default for Header32 { +impl Default for Ehdr32 { fn default() -> Self { Self { ident: [0x7F, b'E', b'L', b'F'], @@ -90,7 +111,11 @@ impl Default for Header32 { } } -impl Header32 { +impl Ehdr32 { + pub fn offsetof_entry(&self) -> usize { + 0x18 + } + pub fn section_offset(&self, ndx: u16) -> u64 { ndx as u64 * self.shentsize as u64 + self.shoff as u64 } @@ -119,8 +144,6 @@ pub struct Shdr32 { pub entsize: u32, } -pub const PT_LOAD: u32 = 0; - #[repr(C)] pub struct Phdr32 { pub r#type: u32, |