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"Divide" spelling fix.

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Jakub Kramarz 2015-01-05 07:11:55 +01:00
parent 9141e0dbf7
commit 94e2102d13
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linux-bootstrap-1.md
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@ -446,7 +446,7 @@ Ok now we have correct segment registers, stack, need only setup bss and jump to
rep; stosl rep; stosl
``` ```
First of all we put [__bss_start](https://github.com/torvalds/linux/blob/master/arch/x86/boot/setup.ld#L47) address in `di` and `_end + 3` (+3 - align to 4 bytes) in `cx`. Clear `eax` register with `xor` instruction and calculate size of BSS section (put in `cx`). Devide `cx` by 4 and repeat `cx` times `stosl` instruction which stores value of `eax` (it is zero) and increase `di`by the size of `eax`. In this way, we write zeros from `__bss_start` to `_end`: First of all we put [__bss_start](https://github.com/torvalds/linux/blob/master/arch/x86/boot/setup.ld#L47) address in `di` and `_end + 3` (+3 - align to 4 bytes) in `cx`. Clear `eax` register with `xor` instruction and calculate size of BSS section (put in `cx`). Divide `cx` by 4 and repeat `cx` times `stosl` instruction which stores value of `eax` (it is zero) and increase `di`by the size of `eax`. In this way, we write zeros from `__bss_start` to `_end`:
![bss](http://oi59.tinypic.com/29m2eyr.jpg) ![bss](http://oi59.tinypic.com/29m2eyr.jpg)