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inline assembly: fix result of summation

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Alexander Kuleshov 2018-03-15 00:07:27 +06:00
parent 5727932167
commit 41c8f09c8e
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Theory/linux-theory-3.md
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@ -190,7 +190,7 @@ If we look at the assembly output:
400525: 48 01 d0 add %rdx,%rax
```
we will see that the `%rdx` register is overwritten with `0x64` or `100` and the result will be `115` instead of `15`. Now if we add the `%rdx` register to the list of `clobbered` registers:
we will see that the `%rdx` register is overwritten with `0x64` or `100` and the result will be `110` instead of `10`. Now if we add the `%rdx` register to the list of `clobbered` registers:
```C
__asm__("movq $100, %%rdx\t\n"