.section name

Use the .section directive to assemble the following code into a section named name.

This directive is only supported for targets that actually support arbitrarily named sections; on a.out targets, for example, it is not accepted, even with a standard a.out section name.

For COFF targets, the .section directive is used in one of the following ways:

.section name[, "flags"]
.section name[, subsegment]

If the optional argument is quoted, it is taken as flags to use for the section. Each flag is a single character. The following flags are recognized:

b

bss section (uninitialized data)

n

section is not loaded

w

writable section

d

data section

r

read-only section

x

executable section

If no flags are specified, the default flags depend upon the section name. If the section name is not recognized, the default will be for the section to be loaded and writable.

If the optional argument to the .section directive is not quoted, it is taken as a subsegment number (see section Sub-Sections).

For ELF targets, the .section directive is used like this:

.section name[, "flags"[, @type]]

The optional flags argument is a quoted string which may contain any combintion of the following characters:

a

section is allocatable

w

section is writable

x

section is executable

The optional type argument may contain one of the following constants:

@progbits

section contains data

@nobits

section does not contain data (i.e., section only occupies space)

If no flags are specified, the default flags depend upon the section name. If the section name is not recognized, the default will be for the section to have none of the above flags: it will not be allocated in memory, nor writable, nor executable. The section will contain data.

For ELF targets, the assembler supports another type of .section directive for compatibility with the Solaris assembler:

.section "name"[, flags...]

Note that the section name is quoted. There may be a sequence of comma separated flags:

#alloc

section is allocatable

#write

section is writable

#execinstr

section is executable

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