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TYPO: wether -> whether

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Remi Rampin 2015-09-20 14:08:10 -04:00
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commit 1ad8f71482
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Booting/linux-bootstrap-1.md
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@ -399,11 +399,11 @@ Let's look at all three of these scenarios:
sti
```
Here we can see aligning of `dx` (contains `sp` given by bootloader) to 4 bytes and checking wether it is zero. If it is zero, we put `0xfffc` (4 byte aligned address before maximum segment size - 64 KB) in `dx`. If it is not zero we continue to use `sp` given by the bootloader (0xf7f4 in my case). After this we put the `ax` value to `ss` which stores the correct segment address of `0x10000` and sets up a correct `sp`. We now have a correct stack:
Here we can see aligning of `dx` (contains `sp` given by bootloader) to 4 bytes and checking whether it is zero. If it is zero, we put `0xfffc` (4 byte aligned address before maximum segment size - 64 KB) in `dx`. If it is not zero we continue to use `sp` given by the bootloader (0xf7f4 in my case). After this we put the `ax` value to `ss` which stores the correct segment address of `0x10000` and sets up a correct `sp`. We now have a correct stack:
![stack](http://oi58.tinypic.com/16iwcis.jpg)
2. In the second scenario, (`ss` != `ds`). First of all put the [_end](https://github.com/torvalds/linux/blob/master/arch/x86/boot/setup.ld#L52) (address of end of setup code) value in `dx` and check the `loadflags` header field with the `testb` instruction too see wether we can use heap or not. [loadflags](https://github.com/torvalds/linux/blob/master/arch/x86/boot/header.S#L321) is a bitmask header which is defined as:
2. In the second scenario, (`ss` != `ds`). First of all put the [_end](https://github.com/torvalds/linux/blob/master/arch/x86/boot/setup.ld#L52) (address of end of setup code) value in `dx` and check the `loadflags` header field with the `testb` instruction too see whether we can use heap or not. [loadflags](https://github.com/torvalds/linux/blob/master/arch/x86/boot/header.S#L321) is a bitmask header which is defined as:
```C
#define LOADED_HIGH (1<<0)