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section_1/regs/ldr.md
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@ -163,7 +163,7 @@ is implemented as:
add x1, x0, x1, lsl 3
```
We are performing address arithmetic on `longs`. Each `long` is 8 bytes wide. `x1, lsl 3` means "before adding the value of `x1` to `x0`, multiple `x1` by 8." Eight is 2 raised to the power of 3. `lsl 3` means shift left by 3 bits ... shifting is a fast way of integer multiplication (and division) by powers of 2.
We are performing address arithmetic on `longs`. Each `long` is 8 bytes wide. `x1, lsl 3` means "before adding the value of `x1` to `x0`, multiply `x1` by 8." Eight is 2 raised to the power of 3. `lsl 3` means shift left by 3 bits ... shifting is a fast way of integer multiplication (and division) by powers of 2.
`Line 13` is the branch to the *bottom* of the loop where the decision code is written. We saw how this can save an instruction [here](../for/README.md).