ARM Code Sections

In source code
#pragma arm section [section_type_list]

Valid section types are:
code
rodata
rwdata
zidata

Example
#pragma arm section rwdata = "foo", rodata = "bar"

In scatter file 

RO

Constants (ex: const TEMP, etc.) and Code 

RW

Expressed initialized global variables 

ZI

Uninitialized global variables, and the variable is initialized to 0


GCC world
.text
program code

.rodata
read-only data;

.data
read-write initialized data;

.bss
read-write zero initialized data.

Reference

http://www.cprogramdevelop.com/912436/

http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0491g/BCFJBABB.html
https://sourceware.org/binutils/docs/ld/REGION_005fALIAS.html#REGION_005fALIAS