从字符串中删除特定的出现(Remove specific occurence from string)

 多引导规范说： 
 
 
 
 Multiboot标头必须完全包含在OS映像的前8192字节内，并且必须是长字（32位）对齐。 
 
 
 objdump给了我们： 
 
Idx Name              Size      File off  Algn
  3 .multiboot_header 00000018  00000040  2**0 CONTENTS, READONLY
 
 注意Algn=2**0 。 
 
 解决方案：指定对齐： 
 
.section .multiboot_header
.balign 4
header_start:
 
 这应该也适用于nasm版本，由于文件布局，它只是偶然的。 

The multiboot specification says:
 
 
 
The Multiboot header must be contained completely within the first 8192 bytes of the OS image, and must be longword (32-bit) aligned.
 
 
objdump gives us:
 
Idx Name              Size      File off  Algn
  3 .multiboot_header 00000018  00000040  2**0 CONTENTS, READONLY
 
Notice the Algn=2**0.
 
Solution: specify alignment:
 
.section .multiboot_header
.balign 4
header_start:
 
This should be done for the nasm version too, it's just accidental that it works there due to file layout.