tailix/libkernaux
1
0
Fork 0
mirror of https://github.com/tailix/libkernaux.git synced 2025-02-03 15:27:07 -05:00
Code Releases Activity

Add tips to README

Browse source
This commit is contained in:
Alex Kotov 2020-11-27 18:38:58 +05:00
parent 80ed9d8e3c
commit 23b9c941f2
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
1 changed files with 50 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

50
README.md
View file

@ -2,3 +2,53 @@ libkernaux
==========
Auxiliary library for kernel development.
Tips
----
Configure with cross-compiler in `$PATH` to make without it in `$PATH`:
```
./configure \
--host=i686-elf \
AR="$(which i686-elf-ar)" \
CC="$(which i686-elf-gcc)" \
RANLIB="$(which i686-elf-ranlib)" \
CFLAGS='-std=gnu99 -ffreestanding -nostdinc -nostdlib -fno-builtin -fno-stack-protector -Wall -Wextra'
```
Check if compilation targets i386: `objdump -d src/arch/i386.o`.
It should output something like this:
```
src/arch/i386.o: file format elf32-i386
Disassembly of section .text:
00000000 <kernaux_arch_i386_read_cr0>:
0: 0f 20 c0 mov %cr0,%eax
3: c3 ret
00000004 <kernaux_arch_i386_read_cr4>:
4: 0f 20 e0 mov %cr4,%eax
7: c3 ret
00000008 <kernaux_arch_i386_write_cr0>:
8: 8b 44 24 04 mov 0x4(%esp),%eax
c: 0f 22 c0 mov %eax,%cr0
f: c3 ret
00000010 <kernaux_arch_i386_write_cr3>:
10: 8b 44 24 04 mov 0x4(%esp),%eax
14: 0f 22 d8 mov %eax,%cr3
17: c3 ret
00000018 <kernaux_arch_i386_write_cr4>:
18: 8b 44 24 04 mov 0x4(%esp),%eax
1c: 0f 22 e0 mov %eax,%cr4
1f: c3 ret
```