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[libatomic] Add RTEMS support

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gcc/

	* config/rtems.h (LIB_SPEC): Add -latomic.

libatomic/

	* configure.tgt (configure_tgt_pre_target_cpu_XCFLAGS): New variable.
	(*-*-rtems*): New supported target.
	* config/rtems/host-config.h: New file.
	* config/rtems/lock.c: Likewise.

From-SVN: r235466
This commit is contained in:
Sebastian Huber 2016-04-27 07:14:42 +00:00 committed by Sebastian Huber
parent 727cbedf8b
commit c47194d2ab
4 changed files with 22 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2016-04-27 Sebastian Huber <sebastian.huber@embedded-brains.de>
* config/rtems.h (LIB_SPEC): Add -latomic.
2016-04-27 Joel Sherrill <joel@rtems.org>
* config/microblaze/rtems.h: Redefine LINK_SPEC to avoid

2
gcc/config/rtems.h
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@ -45,6 +45,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define LIB_SPEC "%{!qrtems: " STD_LIB_SPEC "} " \
"%{!nostdlib: %{qrtems: --start-group \
-lrtemsbsp -lrtemscpu \
-lc -lgcc --end-group %{!qnolinkcmds: -T linkcmds%s}}}"
-latomic -lc -lgcc --end-group %{!qnolinkcmds: -T linkcmds%s}}}"
#define TARGET_POSIX_IO

7
libatomic/ChangeLog
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@ -1,3 +1,10 @@
2016-04-27 Sebastian Huber <sebastian.huber@embedded-brains.de>
* configure.tgt (configure_tgt_pre_target_cpu_XCFLAGS): New variable.
(*-*-rtems*): New supported target.
* config/rtems/host-config.h: New file.
* config/rtems/lock.c: Likewise.
2016-04-25 H.J. Lu <hongjiu.lu@intel.com>
PR target/70454

10
libatomic/configure.tgt
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@ -26,6 +26,10 @@
# Map the target cpu to an ARCH sub-directory. At the same time,
# work out any special compilation flags as necessary.
# Give operating systems the opportunity to discard XCFLAGS modifications based
# on ${target_cpu}. For example to allow proper use of multilibs.
configure_tgt_pre_target_cpu_XCFLAGS="${XCFLAGS}"
case "${target_cpu}" in
alpha*)
# fenv.c needs this option to generate inexact exceptions.
@ -128,6 +132,12 @@ case "${target}" in
;;
esac
;;
*-*-rtems*)
XCFLAGS="${configure_tgt_pre_target_cpu_XCFLAGS}"
config_path="rtems"
;;
*-*-elf*)
# ??? No target OS. We could be targeting bare-metal kernel-mode,
# or user-mode for some custom OS. If the target supports TAS,