2020-11-27 09:28:13 +00:00
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libkernaux
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==========
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Auxiliary library for kernel development.
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2020-11-27 13:38:58 +00:00
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2020-11-28 23:52:51 +00:00
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Table of contents
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-----------------
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* [Overview](#libkernaux)
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* [Table of contents](#table-of-contents)
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* [Tips](#tips)
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2020-11-27 13:38:58 +00:00
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Tips
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----
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Configure with cross-compiler in `$PATH` to make without it in `$PATH`:
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```
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./configure \
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--host=i686-elf \
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AR="$(which i686-elf-ar)" \
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CC="$(which i686-elf-gcc)" \
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RANLIB="$(which i686-elf-ranlib)" \
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2020-11-27 13:43:58 +00:00
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CFLAGS='-ffreestanding -nostdinc -nostdlib -fno-builtin -fno-stack-protector -Wall -Wextra'
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2020-11-27 13:38:58 +00:00
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```
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2020-11-27 14:27:59 +00:00
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To install into specific directory use full path:
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`DESTDIR="$(pwd)/dest" make install` instead of `DESTDIR=dest make install`.
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2020-11-28 23:57:59 +00:00
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Check if compilation targets i386: `objdump -d src/arch/i386.o`. It should
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output something like this:
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2020-11-27 13:38:58 +00:00
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```
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src/arch/i386.o: file format elf32-i386
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Disassembly of section .text:
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2020-11-28 23:56:33 +00:00
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00000000 <kernaux_arch_i386_hang>:
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0: fa cli
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1: f4 hlt
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2: eb fc jmp 0 <kernaux_arch_i386_hang>
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2020-11-27 13:38:58 +00:00
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2020-11-28 23:56:33 +00:00
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00000004 <kernaux_arch_i386_read_cr0>:
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4: 0f 20 c0 mov %cr0,%eax
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2020-11-27 13:38:58 +00:00
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7: c3 ret
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2020-11-28 23:56:33 +00:00
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00000008 <kernaux_arch_i386_read_cr4>:
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8: 0f 20 e0 mov %cr4,%eax
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b: c3 ret
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2020-11-27 13:38:58 +00:00
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2020-11-28 23:56:33 +00:00
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0000000c <kernaux_arch_i386_write_cr0>:
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c: 8b 44 24 04 mov 0x4(%esp),%eax
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10: 0f 22 c0 mov %eax,%cr0
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13: c3 ret
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2020-11-27 13:38:58 +00:00
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2020-11-28 23:56:33 +00:00
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00000014 <kernaux_arch_i386_write_cr3>:
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14: 8b 44 24 04 mov 0x4(%esp),%eax
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18: 0f 22 d8 mov %eax,%cr3
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1b: c3 ret
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0000001c <kernaux_arch_i386_write_cr4>:
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1c: 8b 44 24 04 mov 0x4(%esp),%eax
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20: 0f 22 e0 mov %eax,%cr4
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23: c3 ret
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2020-11-27 13:38:58 +00:00
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```
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