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Style improvements on the boot code

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This commit is contained in:
Zhang Junyang
2023-12-29 17:32:59 +08:00
committed by Tate, Hongliang Tian
parent 501894652f
commit 11ff35d34e
4 changed files with 117 additions and 107 deletions
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25
framework/libs/linux-bzimage/setup/src/loader.rs
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@ -1,17 +1,5 @@
use xmas_elf::program::{ProgramHeader, SegmentData};
/// TODO: remove this and use copy_from_slice instead
///
/// We use a custom memcpy because the standard library's compiler's builtin memcpy
/// fails for some unknown reason.
unsafe fn memcpy(dst: *mut u8, src: *const u8, size: usize) {
let mut i = 0;
while i < size {
*dst.add(i) = *src.add(i);
i += 1;
}
}
/// Load the kernel ELF payload to memory.
pub fn load_elf(file: &[u8]) {
let elf = xmas_elf::ElfFile::new(file).unwrap();
@ -62,3 +50,16 @@ fn load_segment(file: &xmas_elf::ElfFile, program: &xmas_elf::program::ProgramHe
let zero_slice = &mut dst_slice[program.file_size as usize..];
zero_slice.fill(0);
}
/// TODO: remove this and use copy_from_slice instead
///
/// We use a custom memcpy because the standard library's compiler's builtin memcpy
/// fails for some unknown reason. Sometimes that will result in "Unknown OPCode"
/// machine error.
unsafe fn memcpy(dst: *mut u8, src: *const u8, size: usize) {
let mut i = 0;
while i < size {
*dst.add(i) = *src.add(i);
i += 1;
}
}