How can I change the compile characteristic of .bss section in CW6.3 ?

[Tang]

Hello.
In CW6.3 ,the first defined bss varible will always  be compiled  to the last address of  bss section.

For example,the bss section is located in 0x2000_0000~0x2000_ffff, and i define two bss variables in *.h file
:unsigned int var1;
 unsigned int var2;

In the MAP file,the address of var1 will be 0x2000_0004, var2 will be 0x2000_0000.

In my project ,I want the address of var1 is 0x2000_0000, var2  is 0x2000_0004.

How can I get it?
Thanks.

[Tang]

Thanks.
You are so helpful!

[CrasyCat]

Hello

Please note that there is no requirement in the ANSI C standard that the variables symbols) will be allocated in the sequence they have been defined.

A compiler/linker may change the order of allocation.

If you really need the object/symbols to be allocated in a certain sequence, I would recommend you to define a structure and access the fields in there through a macro.

Example:

struct {

:unsigned int var1;
 unsigned int var2;
}MyStruct;

#define var1 MyStruct.var1

#define var2 MyStruct.var2

CrasyCat

[J2MEJediMaster]

Check the following lengthy thread for information on how to locate sections.

---Tom