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[GCC, DOCS, AArch64] Add missing documenation for mbranch-protection 

This patch add the missing documentation bits for -mbranch-protection in both
extend.texi and invoke.texi.

*** gcc/ChangeLog ***

2019-04-03  Sudakshina Das  <sudi.das@arm.com>

	* doc/extend.texi: Add deprecated comment on sign-return-address
	function attribute and add mbranch-protection.
	* doc/invoke.texi: Add bti to the options for mbranch-protection.

From-SVN: r270119
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Sudakshina Das 2019-04-03 10:02:23 +00:00 committed by Sudakshina Das
parent 67a9a71183
commit deb012a19d
3 changed files with 17 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2019-04-03 Sudakshina Das <sudi.das@arm.com>
* doc/extend.texi: Add deprecated comment on sign-return-address
function attribute and add mbranch-protection.
* doc/invoke.texi: Add bti to the options for mbranch-protection.
2019-04-03 Richard Biener <rguenther@suse.de>
PR lto/89896

10
gcc/doc/extend.texi
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@ -3925,7 +3925,15 @@ same as for the @option{-mcpu=} command-line option.
@cindex @code{sign-return-address} function attribute, AArch64
Select the function scope on which return address signing will be applied. The
behavior and permissible arguments are the same as for the command-line option
@option{-msign-return-address=}. The default value is @code{none}.
@option{-msign-return-address=}. The default value is @code{none}. This
attribute is deprecated. The @code{branch-protection} attribute should
be used instead.
@item branch-protection
@cindex @code{branch-protection} function attribute, AArch64
Select the function scope on which branch protection will be applied. The
behavior and permissible arguments are the same as for the command-line option
@option{-mbranch-protection=}. The default value is @code{none}.
@end table

4
gcc/doc/invoke.texi
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@ -632,7 +632,7 @@ Objective-C and Objective-C++ Dialects}.
-mlow-precision-recip-sqrt -mlow-precision-sqrt -mlow-precision-div @gol
-mpc-relative-literal-loads @gol
-msign-return-address=@var{scope} @gol
-mbranch-protection=@var{none}|@var{standard}|@var{pac-ret}[+@var{leaf}] @gol
-mbranch-protection=@var{none}|@var{standard}|@var{pac-ret}[+@var{leaf}]|@var{bti} @gol
-march=@var{name} -mcpu=@var{name} -mtune=@var{name} @gol
-moverride=@var{string} -mverbose-cost-dump @gol
-mstack-protector-guard=@var{guard} -mstack-protector-guard-reg=@var{sysreg} @gol
@ -15878,7 +15878,7 @@ functions, and @samp{all}, which enables pointer signing for all functions. The
default value is @samp{none}. This option has been deprecated by
-mbranch-protection.
@item -mbranch-protection=@var{none}|@var{standard}|@var{pac-ret}[+@var{leaf}]
@item -mbranch-protection=@var{none}|@var{standard}|@var{pac-ret}[+@var{leaf}]|@var{bti}
@opindex mbranch-protection
Select the branch protection features to use.
@samp{none} is the default and turns off all types of branch protection.