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doc: Update nasmdoc

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Added bnd warning and nobnd prefix. DEFAULT directive section
has got more description about BND-related settings.

Signed-off-by: Jin Kyu Song <jin.kyu.song@intel.com>
This commit is contained in:
Jin Kyu Song 2013-12-04 20:51:13 -08:00
parent b287ff0ddb
commit 009e54e0a1
1 changed files with 24 additions and 4 deletions
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doc/nasmdoc.src
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@ -956,6 +956,10 @@ Enabled by default.
prefixes.
Enabled by default.
\b \i\c{bnd} warns about ineffective use of the \c{BND} prefix when a relaxed
form of jmp instruction becomes jmp short form.
Enabled by default.
\b \i\c{error} causes warnings to be treated as errors. Disabled by
default.
@ -1214,7 +1218,7 @@ The instruction field may contain any machine instruction: Pentium
and P6 instructions, FPU instructions, MMX instructions and even
undocumented instructions are all supported. The instruction may be
prefixed by \c{LOCK}, \c{REP}, \c{REPE}/\c{REPZ}, \c{REPNE}/\c{REPNZ},
\c{XACQUIRE}/\c{XRELEASE} or \c{BND}, in the usual way. Explicit
\c{XACQUIRE}/\c{XRELEASE} or \c{BND}/\c{NOBND}, in the usual way. Explicit
\I{address-size prefixes}address-size and \i{operand-size prefixes} \i\c{A16},
\i\c{A32}, \i\c{A64}, \i\c{O16} and \i\c{O32}, \i\c{O64} are provided - one example of their use
is given in \k{mixsize}. You can also use the name of a \I{segment
@ -4434,9 +4438,12 @@ specify most features directly. However, this is occationally
obnoxious, as the explicit form is pretty much the only one one wishes
to use.
Currently, the only \c{DEFAULT} that is settable is whether or not
registerless instructions in 64-bit mode are \c{RIP}-relative or not.
By default, they are absolute unless overridden with the \i\c{REL}
Currently, \c{DEFAULT} can set \c{REL} & \c{ABS} and \c{BND} & \c{NOBND}.
\S{REL & ABS} \i\c{REL} & \i\c{ABS}: RIP-relative addressing
This sets whether registerless instructions in 64-bit mode are \c{RIP}-relative
or not. By default, they are absolute unless overridden with the \i\c{REL}
specifier (see \k{effaddr}). However, if \c{DEFAULT REL} is
specified, \c{REL} is default, unless overridden with the \c{ABS}
specifier, \e{except when used with an FS or GS segment override}.
@ -4448,6 +4455,19 @@ other special functions in 64-bit mode, and generating
\c{DEFAULT REL} is disabled with \c{DEFAULT ABS}.
\S{BND & NOBND} \i\c{BND} & \i\c{NOBND}: \c{BND} prefix
If \c{DEFAULT BND} is set, all bnd-prefix available instructions following
this directive are prefixed with bnd. To override it, \c{NOBND} prefix can
be used.
\c DEFAULT BND
\c call foo ; BND will be prefixed
\c nobnd call foo ; BND will NOT be prefixed
DEFAULT NOBND can disable DEFAULT BND and then \c{BND} prefix will be added
only when explicitly specified in code.
\H{section} \i\c{SECTION} or \i\c{SEGMENT}: Changing and \i{Defining
Sections}