diff options
Diffstat (limited to 'ld/ld.texi')
| -rw-r--r-- | ld/ld.texi | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -1024,7 +1024,7 @@ Write a @dfn{dependency file} to @var{depfile}. This file contains a rule suitable for @code{make} describing the output file and all the input files that were read to produce it. The output is similar to the compiler's output with @samp{-M -MP} (@pxref{Preprocessor Options,, Options -Controlling the Preprocessor, gcc.info, Using the GNU Compiler +Controlling the Preprocessor, gcc, Using the GNU Compiler Collection}). Note that there is no option like the compiler's @samp{-MM}, to exclude ``system files'' (which is not a well-specified concept in the linker, unlike ``system headers'' in the compiler). So the output from @@ -8374,6 +8374,21 @@ GCS markings. If issues are found, a maximum of 20 messages will be emitted, and then a summary with the total number of issues will be displayed at the end. +@kindex -z memtag-mode=@var{mode} +@cindex MTE modes of operation +The @samp{-z memtag-mode=mode} specifies the MTE mode of operation. +The value of @samp{mode} can be one of @samp{none}, @samp{sync} or +@samp{async}. The specified modes determine the value of the +@samp{DT_AARCH64_MEMTAG_MODE} dynamic tag. The @samp{sync} mode +implies precise exceptions, with the runtime providing the exact +instruction where the fault occurred, and the exact faulting address. +The @samp{async} mode implies imprecise exceptions. + +@kindex -z memtag-stack +@cindex Mark program stack for MTE protection +The @samp{-z memtag-stack} specifies that output object uses MTE +instructions for stack memory usage. + @ifclear GENERIC @lowersections @end ifclear @@ -9686,7 +9701,7 @@ format can be supported simply by creating a new BFD back end and adding it to the library. To conserve runtime memory, however, the linker and associated tools are usually configured to support only a subset of the object file formats available. You can use @code{objdump -i} -(@pxref{objdump,,objdump,binutils.info,The GNU Binary Utilities}) to +(@pxref{objdump,,objdump,binutils,The GNU Binary Utilities}) to list all the formats available for your configuration. @cindex BFD requirements |