@set POWERPC
@set POWERPC64
@set Renesas
+@set S/390
@set SPU
@set TICOFF
@set WIN32
@ifset POWERPC64
* PowerPC64 ELF64:: ld and PowerPC64 64-bit ELF Support
@end ifset
+@ifset S/390
+* S/390 ELF:: ld and S/390 ELF Support
+@end ifset
@ifset SPU
* SPU ELF:: ld and SPU ELF Support
@end ifset
the symbols defined by this shared object available for symbol resolution
of subsequently loaded libraries.
+@item globalaudit
+This option is only meaningful when building a dynamic executable.
+This option marks the executable as requiring global auditing by
+setting the @code{DF_1_GLOBAUDIT} bit in the @code{DT_FLAGS_1} dynamic
+tag. Global auditing requires that any auditing library defined via
+the @option{--depaudit} or @option{-P} command line options be run for
+all dynamic objects loaded by the application.
+
@item initfirst
This option is only meaningful when building a shared object.
It marks the object so that its runtime initialization will occur
@option{call-nop=suffix-@var{byte}} generates @code{call foo @var{byte}}.
Supported for i386 and x86_64.
+@item ibtplt
+Generate Intel Indirect Branch Tracking (IBT) enabled PLT entries.
+Supported for Linux/i386 and Linux/x86_64.
+
+@item IBT
+Generate GNU_PROPERTY_X86_FEATURE_1_IBT in .note.gnu.property section
+to indicate compatibility with IBT. This also implies @option{ibtplt}.
+Supported for Linux/i386 and Linux/x86_64.
+
+@item shstk
+Generate GNU_PROPERTY_X86_FEATURE_1_SHSTK in .note.gnu.property section
+to indicate compatibility with Intel Shadow Stack. Supported for
+Linux/i386 and Linux/x86_64.
+
@end table
Other keywords are ignored for Solaris compatibility.
@ifset POWERPC64
* PowerPC64 ELF64:: @command{ld} and PowerPC64 64-bit ELF Support
@end ifset
+@ifset S/390
+* S/390 ELF:: @command{ld} and S/390 ELF Support
+@end ifset
@ifset SPU
* SPU ELF:: @command{ld} and SPU ELF Support
@end ifset
The last two sections are used by gcc.
@end table
+@table @option
+@cindex MSP430 Options
+@kindex --code-region
+@item --code-region=[either,lower,upper,none]
+This will transform .text* sections to [either,lower,upper].text* sections. The
+argument passed to GCC for -mcode-region is propagated to the linker
+using this option.
+
+@kindex --data-region
+@item --data-region=[either,lower,upper,none]
+This will transform .data*, .bss* and .rodata* sections to
+[either,lower,upper].[data,bss,rodata]* sections. The argument passed to GCC
+for -mdata-region is propagated to the linker using this option.
+
+@kindex --disable-sec-transformation
+@item --disable-sec-transformation
+Prevent the transformation of sections as specified by the @code{--code-region}
+and @code{--data-region} options.
+This is useful if you are compiling and linking using a single call to the GCC
+wrapper, and want to compile the source files using -m[code,data]-region but
+not transform the sections for prebuilt libraries and objects.
+@end table
+
@ifclear GENERIC
@lowersections
@end ifclear
looks for calls to commonly used functions that create threads, and if
seen, adds the necessary barriers. Use these options to change the
default behaviour.
+
+@cindex PowerPC64 ELFv2 PLT localentry optimization
+@kindex --plt-localentry
+@kindex --no-plt-localentry
+@item --plt-localentry
+@itemx --no-localentry
+ELFv2 functions with localentry:0 are those with a single entry point,
+ie. global entry == local entry, and that have no requirement on r2
+(the TOC/GOT pointer) or r12, and guarantee r2 is unchanged on return.
+Such an external function can be called via the PLT without saving r2
+or restoring it on return, avoiding a common load-hit-store for small
+functions. The optimization is attractive, with up to 40% reduction
+in execution time for a small function, but can result in symbol
+interposition failures. Also, minor changes in a shared library,
+including system libraries, can cause a function that was localentry:0
+to become localentry:8. This will result in a dynamic loader
+complaint and failure to run. The option is experimental, use with
+care. @option{--no-plt-localentry} is the default.
+@end table
+
+@ifclear GENERIC
+@lowersections
+@end ifclear
+@end ifset
+
+@ifset S/390
+@ifclear GENERIC
+@raisesections
+@end ifclear
+
+@node S/390 ELF
+@section @command{ld} and S/390 ELF Support
+
+@cindex S/390 ELF options
+@table @option
+
+@cindex S/390
+@kindex --s390-pgste
+@item --s390-pgste
+This option marks the result file with a @code{PT_S390_PGSTE}
+segment. The Linux kernel is supposed to allocate 4k page tables for
+binaries marked that way.
@end table
@ifclear GENERIC
@code{PRIVATE}: Put the symbol in the DLL's export table, but do not put
it into the static import library used to resolve imports at link time. The
symbol can still be imported using the @code{LoadLibrary/GetProcAddress}
-API at runtime or by by using the GNU ld extension of linking directly to
+API at runtime or by using the GNU ld extension of linking directly to
the DLL without an import library.
See ld/deffilep.y in the binutils sources for the full specification of
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