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Update Booting/linux-bootstrap-2md.md

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hailin cai
2016-02-19 12:22:02 -05:00
parent 3909c1ab36
commit 68612146c4
1 changed files with 3 additions and 2 deletions
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Booting/linux-bootstrap-2md.md
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@@ -337,13 +337,14 @@ ENDPROC(memset)
```C
char *stack_end;
//%P1 is (-STACK_SIZE)
if (boot_params.hdr.loadflags & CAN_USE_HEAP) {
asm("leal %P1(%%esp),%0"
: "=r" (stack_end) : "i" (-STACK_SIZE));
```
`stack_end = esp - STACK_SIZE`.
换言之`stack_end = esp - STACK_SIZE`.
Then there is the `heap_end` calculation:
```c