TLS mods for libgcc.
OK to apply?
Claudiu
libgcc/
2016-04-15 Claudiu Zissulescu <claz...@synopsys.com>
Joern Rennecke <joern.renne...@embecosm.com>
* config/arc/crttls.S: New file.
* config/arc/t-arc: New rule.
* config.host (arc*-*-elf*, arc*-*-linux*): Add crttls.o.
---
libgcc/config.host | 2 ++
libgcc/config/arc/crttls.S | 67 ++++++++++++++++++++++++++++++++++++++++++++++
libgcc/config/arc/t-arc | 3 +++
3 files changed, 72 insertions(+)
create mode 100644 libgcc/config/arc/crttls.S
diff --git a/libgcc/config.host b/libgcc/config.host
index b61a579..c5266ed 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -367,10 +367,12 @@ alpha*-dec-*vms*)
arc*-*-elf*)
tmake_file="arc/t-arc-newlib arc/t-arc"
extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o
libgmon.a crtg.o crtgend.o"
+ extra_parts="${extra_parts} crttls.o"
;;
arc*-*-linux-uclibc*)
tmake_file="${tmake_file} t-slibgcc-libgcc t-slibgcc-nolc-override
arc/t-arc700-uClibc arc/t-arc"
extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o
libgmon.a crtg.o crtgend.o"
+ extra_parts="${extra_parts} crttls.o"
;;
arm-wrs-vxworks)
tmake_file="$tmake_file arm/t-arm arm/t-elf t-softfp-sfdf t-softfp-excl
arm/t-softfp t-softfp"
diff --git a/libgcc/config/arc/crttls.S b/libgcc/config/arc/crttls.S
new file mode 100644
index 0000000..512c1df5
--- /dev/null
+++ b/libgcc/config/arc/crttls.S
@@ -0,0 +1,67 @@
+; newlib tls glue code for Synopsys DesignWare ARC cpu.
+
+/* Copyright (C) 2016 Free Software Foundation, Inc.
+ Contributor: Joern Rennecke <joern.renne...@embecosm.com>
+ on behalf of Synopsys Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+<http://www.gnu.org/licenses/>. */
+
+/* As a special exception, if you link this library with other files,
+ some of which are compiled with GCC, to produce an executable,
+ this library does not by itself cause the resulting executable
+ to be covered by the GNU General Public License.
+ This exception does not however invalidate any other reasons why
+ the executable file might be covered by the GNU General Public License. */
+
+
+#if (__ARC_TLS_REGNO__ != -1)
+ /* ANSI concatenation macros. */
+
+#define CONCAT1(a, b) CONCAT2(a, b)
+#define CONCAT2(a, b) a ## b
+
+ /* Use the right prefix for global labels. */
+
+#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
+
+#define FUNC(X) .type SYM(X),@function
+#define ENDFUNC0(X) .Lfe_##X: .size X,.Lfe_##X-X
+#define ENDFUNC(X) ENDFUNC0(X)
+
+ .global SYM(__read_tp)
+SYM(__read_tp):
+ FUNC(__read_tp)
+ mov r0, CONCAT1 (r, __ARC_TLS_REGNO__)
+ nop
+ j [blink]
+ ENDFUNC(__read_tp)
+
+ .section .init
+ mov CONCAT1 (r, __ARC_TLS_REGNO__),__main_tcb_end+256
+
+ .section .tbss
+__main_tcb:
+ .long 0
+ .long 0
+__main_tcb_end:
+
+#endif /*__ARC_TLS_REGNO__ != -1 */
diff --git a/libgcc/config/arc/t-arc b/libgcc/config/arc/t-arc
index 7ceb694..3523aed 100644
--- a/libgcc/config/arc/t-arc
+++ b/libgcc/config/arc/t-arc
@@ -68,6 +68,9 @@ crtg.o: $(srcdir)/config/arc/crtg.S
crtgend.o: $(srcdir)/config/arc/crtgend.S
$(crt_compile) -c -x assembler-with-cpp $<
+crttls.o: $(srcdir)/config/arc/crttls.S
+ $(crt_compile) -c -x assembler-with-cpp $<
+
mcount.o: $(srcdir)/config/arc/gmon/mcount.c
$(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $< \
-fcall-saved-r0 -fcall-saved-r1 -fcall-saved-r2 -fcall-saved-r3 \
--
1.9.1
