sawyer/picocalc-os-rs
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use section parser

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This commit is contained in:
sawyer bristol
2025-09-26 20:29:38 -06:00
parent fb2c3583de
commit dbb811c9f5
1 changed files with 4 additions and 9 deletions
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13
kernel/src/elf.rs
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@@ -62,13 +62,8 @@ pub async unsafe fn load_binary(name: &ShortFileName) -> Option<(EntryFn, Bump)>
} }
} }
let mut sh_buf = vec![0_u8; elf_header.e_shentsize as usize];
for i in 0..elf_header.e_shnum { for i in 0..elf_header.e_shnum {
file.seek_from_start(elf_header.e_shoff + (elf_header.e_shentsize * i) as u32) let sh = read_section(&mut file, elf_header, i.into());
.unwrap();
file.read(&mut sh_buf).unwrap();
let sh = cast_shdr(&sh_buf);
match sh.sh_type { match sh.sh_type {
SHT_REL => { SHT_REL => {
@@ -250,13 +245,13 @@ fn total_loadable_size(
} }
fn read_section(file: &mut File, elf_header: &Header, section: u32) -> SectionHeader { fn read_section(file: &mut File, elf_header: &Header, section: u32) -> SectionHeader {
let mut section_header_buf = vec![0_u8; elf_header.e_shentsize as usize]; let mut sh_buf = vec![0_u8; elf_header.e_shentsize as usize];
file.seek_from_start(elf_header.e_shoff + (elf_header.e_shentsize as u32 * section)) file.seek_from_start(elf_header.e_shoff + (elf_header.e_shentsize as u32 * section))
.unwrap(); .unwrap();
file.read(&mut section_header_buf).unwrap(); file.read(&mut sh_buf).unwrap();
cast_shdr(&section_header_buf) cast_shdr(&sh_buf)
} }
fn cast_phdr(buf: &[u8]) -> ProgramHeader { fn cast_phdr(buf: &[u8]) -> ProgramHeader {