16.1.1 Section Directive (Deprecated Form)
The .section name [,
flags] [, @type] directive assembles the
following code into a section named name. This form of
the directive should not be used in new code. Use the alternate form, discussed in 5.1.5 Section Directive. The optional flags
argument is a quoted string which may contain any combination of the following
characters:
a section is allocatable
w section is writable
x section is executable
The @type argument may be one of:
@progbits Normal section with
contents
@nobits Section does not contain data
(i.e., section only occupies space)
The following section names are recognized:
| Section Name | Default Flag |
|---|---|
.text |
x |
.data |
d |
.bss |
b |
Note: Ensure that double quotes are used around flags. If the optional argument to the
.section directive is not quoted, it is taken as a sub-section number. Remember, a single character in single quotes (i.e., ‘b’) is converted by the preprocessor to a number.Section Directive Examples
.section foo,"aw",@progbits #foo is initialized
#data memory.
.section fob,"aw",@nobits #fob is uninitialized
#(but also not zeroed)
#data memory.
.section bar,"ax",@progbits #bar is in program memory