...place code and data into different sections?

There are four ways to put code and data into different named sections:

If you are using C/C++ you can use gcc's section attribute. The following function declaration will place the function func into the section named .foo:
```
void func(void) __attribute__ ((section(".foo")));
```
The following variable definition will place the variable var into the section named .bar:
```
 unsigned int var __attribute__ ((section(".bar")));
```
If you are using the assembler you can use a .section directive in place of a .text or .data directive. For example to place code into a section named .foo:
```
.section .foo, "ax"
func:
  add r0, r0, #1
  bx lr
```
To place data into a section named .bar:
```
.section .bar, "a"
var:
  .word 0
```
Change a section's name for an entire module using the Section Name project properties. For example to put all code from a particular module into the section ".foo":
- Select project element in project window.
- Open the element's Properties window.
- Select the Section tab.
- Change the Code Section Name from ".text" to ".foo".

Jmfrey

How do I do this for msp430.

 unsigned int var __attribute__ ((section(".bar")));

gives errors when compiling.

Paul Curtis

The documentation say you can use #pragmas or:

 unsigned int var __at ".bar";

Thanks, where is this in the documentation because I could not find anything on the subject?

enkoder

The link above does not exist.