[PATCH 2/5] NPTL: ARC support
Vineet Gupta
Vineet.Gupta1 at synopsys.com
Fri Jul 25 12:09:05 UTC 2014
Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
---
extra/Configs/defconfigs/arc/defconfig | 2 +-
include/elf.h | 12 +-
ldso/ldso/arc/dl-debug.h | 15 ++
ldso/ldso/arc/dl-sysdep.h | 9 +-
ldso/ldso/arc/elfinterp.c | 26 +-
libc/sysdeps/linux/arc/bits/atomic.h | 57 +++++
libc/sysdeps/linux/arc/clone.S | 36 ++-
libc/sysdeps/linux/arc/jmpbuf-unwind.h | 17 ++
libc/sysdeps/linux/arc/sysdep.h | 4 +
libc/sysdeps/linux/arc/vfork.S | 13 +
libpthread/nptl/sysdeps/arc/Makefile.arch | 13 +
libpthread/nptl/sysdeps/arc/dl-tls.h | 28 +++
libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h | 32 +++
libpthread/nptl/sysdeps/arc/libc-tls.c | 27 ++
libpthread/nptl/sysdeps/arc/pthread_spin_lock.S | 21 ++
libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S | 31 +++
libpthread/nptl/sysdeps/arc/pthreaddef.h | 40 +++
libpthread/nptl/sysdeps/arc/tcb-offsets.sym | 8 +
libpthread/nptl/sysdeps/arc/tls.h | 160 ++++++++++++
.../nptl/sysdeps/unix/sysv/linux/arc/Makefile | 13 +
.../nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch | 32 +++
.../unix/sysv/linux/arc/bits/pthreadtypes.h | 181 +++++++++++++
.../sysdeps/unix/sysv/linux/arc/bits/semaphore.h | 35 +++
.../nptl/sysdeps/unix/sysv/linux/arc/clone.S | 10 +
.../sysdeps/unix/sysv/linux/arc/createthread.c | 25 ++
libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c | 30 +++
.../unix/sysv/linux/arc/libc-lowlevellock.c | 21 ++
.../sysdeps/unix/sysv/linux/arc/lowlevellock.c | 126 ++++++++++
.../sysdeps/unix/sysv/linux/arc/lowlevellock.h | 279 +++++++++++++++++++++
.../unix/sysv/linux/arc/pt-__syscall_error.c | 7 +
.../sysv/linux/arc/pt-__syscall_rt_sigaction.c | 7 +
.../sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c | 11 +
.../nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S | 7 +
.../sysdeps/unix/sysv/linux/arc/pthread_once.c | 100 ++++++++
.../sysdeps/unix/sysv/linux/arc/sysdep-cancel.h | 115 +++++++++
.../nptl/sysdeps/unix/sysv/linux/arc/vfork.S | 11 +
36 files changed, 1548 insertions(+), 13 deletions(-)
create mode 100644 libc/sysdeps/linux/arc/bits/atomic.h
create mode 100644 libpthread/nptl/sysdeps/arc/Makefile.arch
create mode 100644 libpthread/nptl/sysdeps/arc/dl-tls.h
create mode 100644 libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h
create mode 100644 libpthread/nptl/sysdeps/arc/libc-tls.c
create mode 100644 libpthread/nptl/sysdeps/arc/pthread_spin_lock.S
create mode 100644 libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S
create mode 100644 libpthread/nptl/sysdeps/arc/pthreaddef.h
create mode 100644 libpthread/nptl/sysdeps/arc/tcb-offsets.sym
create mode 100644 libpthread/nptl/sysdeps/arc/tls.h
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
create mode 100644 libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
diff --git a/extra/Configs/defconfigs/arc/defconfig b/extra/Configs/defconfigs/arc/defconfig
index 28356561242f..23058f353dc9 100644
--- a/extra/Configs/defconfigs/arc/defconfig
+++ b/extra/Configs/defconfigs/arc/defconfig
@@ -6,7 +6,7 @@ KERNEL_HEADERS="%KERNEL_HEADERS%"
# LDSO_CACHE_SUPPORT is not set
LDSO_RUNPATH=y
# LDSO_SAFE_RUNPATH is not set
-LINUXTHREADS_OLD=y
+UCLIBC_HAS_THREADS_NATIVE=y
PTHREADS_DEBUG_SUPPORT=y
UCLIBC_SUSV2_LEGACY=y
UCLIBC_SUSV3_LEGACY=y
diff --git a/include/elf.h b/include/elf.h
index 3bddcdccadf8..1979209cde83 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -3246,7 +3246,17 @@ typedef Elf32_Addr Elf32_Conflict;
#define R_ARC_GOTOFF 0x39
#define R_ARC_GOTPC 0x3A
#define R_ARC_GOT32 0x3B
-#define R_ARC_NUM 0x3C
+
+#define R_ARC_TLS_DTPMOD 0x42
+#define R_ARC_TLS_DTPOFF 0x43
+#define R_ARC_TLS_TPOFF 0x44
+#define R_ARC_TLS_GD_GOT 0x45
+#define R_ARC_TLS_GD_LD 0x46
+#define R_ARC_TLS_GD_CALL 0x47
+#define R_ARC_TLS_IE_GOT 0x48
+#define R_ARC_TLS_DTPOFF_S9 0x4a
+#define R_ARC_TLS_LE_S9 0x4a
+#define R_ARC_TLS_LE_32 0x4b
#ifdef __cplusplus
}
diff --git a/ldso/ldso/arc/dl-debug.h b/ldso/ldso/arc/dl-debug.h
index ff559f27fa31..6573e5452a3d 100644
--- a/ldso/ldso/arc/dl-debug.h
+++ b/ldso/ldso/arc/dl-debug.h
@@ -65,4 +65,19 @@ static const char *_dl_reltypes_tab[] =
"R_ARC_GOTOFF",
"R_ARC_GOTPC",
"R_ARC_GOT32",
+ "", /* 60 */
+ "",
+ "",
+ "",
+ "",
+ "", /* 65 */
+ "R_ARC_TLS_DTPMOD",
+ "R_ARC_TLS_DTPOFF",
+ "R_ARC_TLS_TPOFF",
+ "R_ARC_TLS_GD_GOT",
+ "R_ARC_TLS_GD_LD", /* 70 */
+ "R_ARC_TLS_GD_CALL",
+ "R_ARC_TLS_IE_GOT",
+ "",
+ "",
};
diff --git a/ldso/ldso/arc/dl-sysdep.h b/ldso/ldso/arc/dl-sysdep.h
index af4b18064082..d71e16b3234e 100644
--- a/ldso/ldso/arc/dl-sysdep.h
+++ b/ldso/ldso/arc/dl-sysdep.h
@@ -96,12 +96,15 @@ extern unsigned __udivmodsi4(unsigned, unsigned) attribute_hidden;
}) \
)
-/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
- PLT entries should not be allowed to define the value.
+/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry or
+ TLS variable so PLT entries should not be allowed to define the value.
+
ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
of the main executable's symbols, as for a COPY reloc. */
#define elf_machine_type_class(type) \
- ((((type) == R_ARC_JMP_SLOT) * ELF_RTYPE_CLASS_PLT) \
+ ((((type) == R_ARC_JMP_SLOT || (type) == R_ARC_TLS_DTPMOD || \
+ (type) == R_ARC_TLS_DTPOFF || (type) == R_ARC_TLS_TPOFF) \
+ * ELF_RTYPE_CLASS_PLT) \
| (((type) == R_ARC_COPY) * ELF_RTYPE_CLASS_COPY))
/*
diff --git a/ldso/ldso/arc/elfinterp.c b/ldso/ldso/arc/elfinterp.c
index ca0d2c16f266..d26c947058a0 100644
--- a/ldso/ldso/arc/elfinterp.c
+++ b/ldso/ldso/arc/elfinterp.c
@@ -92,6 +92,7 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
unsigned long old_val = 0;
#endif
struct symbol_ref sym_ref;
+ struct elf_resolve *tls_tpnt = NULL;
reloc_addr = (unsigned long *)(tpnt->loadaddr + rpnt->r_offset);
reloc_type = ELF_R_TYPE(rpnt->r_info);
@@ -118,15 +119,26 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
*/
if (unlikely(!symbol_addr
- && ELF_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK)) {
+ && ELF_ST_BIND(symtab[symtab_index].st_info) != STB_WEAK
+ && ELF_ST_TYPE(symtab[symtab_index].st_info) != STT_TLS)) {
/* Non-fatal if called from dlopen, hence different ret code */
return 1;
}
+
+ tls_tpnt = sym_ref.tpnt;
} else if (reloc_type == R_ARC_RELATIVE ) {
*reloc_addr += tpnt->loadaddr;
goto log_entry;
}
+#if defined USE_TLS && USE_TLS
+ /* In case of a TLS reloc, tls_tpnt NULL means we have an 'anonymous'
+ symbol. This is the case for a static tls variable, so the lookup
+ module is just that one is referencing the tls variable. */
+ if (!tls_tpnt)
+ tls_tpnt = tpnt;
+#endif
+
switch (reloc_type) {
case R_ARC_32:
*reloc_addr += symbol_addr + rpnt->r_addend;
@@ -142,6 +154,18 @@ _dl_do_reloc(struct elf_resolve *tpnt, struct r_scope_elem *scope,
_dl_memcpy((void *) reloc_addr,(void *) symbol_addr,
symtab[symtab_index].st_size);
break;
+#if defined USE_TLS && USE_TLS
+ case R_ARC_TLS_DTPMOD:
+ *reloc_addr = tls_tpnt->l_tls_modid;
+ break;
+ case R_ARC_TLS_DTPOFF:
+ *reloc_addr = symbol_addr;
+ break;
+ case R_ARC_TLS_TPOFF:
+ CHECK_STATIC_TLS ((struct link_map *) tls_tpnt);
+ *reloc_addr = tls_tpnt->l_tls_offset + symbol_addr + rpnt->r_addend;
+ break;
+#endif
default:
return -1;
}
diff --git a/libc/sysdeps/linux/arc/bits/atomic.h b/libc/sysdeps/linux/arc/bits/atomic.h
new file mode 100644
index 000000000000..d4abf4eb7896
--- /dev/null
+++ b/libc/sysdeps/linux/arc/bits/atomic.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <stdint.h>
+#include <sysdep.h>
+
+typedef int8_t atomic8_t;
+typedef uint8_t uatomic8_t;
+typedef int_fast8_t atomic_fast8_t;
+typedef uint_fast8_t uatomic_fast8_t;
+
+typedef int32_t atomic32_t;
+typedef uint32_t uatomic32_t;
+typedef int_fast32_t atomic_fast32_t;
+typedef uint_fast32_t uatomic_fast32_t;
+
+typedef intptr_t atomicptr_t;
+typedef uintptr_t uatomicptr_t;
+typedef intmax_t atomic_max_t;
+typedef uintmax_t uatomic_max_t;
+
+void __arc_link_error (void);
+
+#define atomic_full_barrier() \
+ __asm__ __volatile__("": : :"memory")
+
+/* Atomic compare and exchange. */
+
+#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
+ ({ __arc_link_error (); oldval; })
+
+#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
+ ({ __arc_link_error (); oldval; })
+
+#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
+ ({ \
+ __typeof(oldval) prev; \
+ \
+ __asm__ __volatile__( \
+ "1: llock %0, [%1] \n" \
+ " brne %0, %2, 2f \n" \
+ " scond %3, [%1] \n" \
+ " bnz 1b \n" \
+ "2: \n" \
+ : "=&r"(prev) \
+ : "r"(mem), "ir"(oldval), \
+ "r"(newval) /* can't be "ir". scond can't take limm for "b" */\
+ : "cc", "memory"); \
+ \
+ prev; \
+ })
+
+#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
+ ({ __arc_link_error (); oldval; })
diff --git a/libc/sysdeps/linux/arc/clone.S b/libc/sysdeps/linux/arc/clone.S
index 9aa8d92cd7b7..db5000caff96 100644
--- a/libc/sysdeps/linux/arc/clone.S
+++ b/libc/sysdeps/linux/arc/clone.S
@@ -19,25 +19,32 @@
; Current (Jul 2012) upstream powerpc/clone.S assumes similarly.
; Our LTP (from 2007) doesn't seem to have tests to prove otherwise
-; clone syscall in kernel
+; clone syscall in kernel (ABI: CONFIG_CLONE_BACKWARDS)
;
-; int sys_clone(unsigned long clone_flags, unsigned long newsp,
-; int __user *parent_tidptr, void *tls,
+; int sys_clone(unsigned long clone_flags,
+; unsigned long newsp,
+; int __user *parent_tidptr,
+; void *tls,
; int __user *child_tidptr)
+#define CLONE_VM 0x00000100
+#define CLONE_THREAD 0x00010000
+#define CLONE_THREAD_N_VM (CLONE_THREAD | CLONE_VM)
ENTRY(clone)
cmp r0, 0 ; @fn can't be NULL
cmp.ne r1, 0 ; @child_stack can't be NULL
bz .L__sys_err
- ; @fn and @args needed after the syscall for child
- ; However r3 containing @arg will be clobbered BEFORE syscall
+ ; save some of the orig args
; r0 containg @fn will be clobbered AFTER syscall (with ret val)
- mov r10, r0
- mov r11, r3
+ ; rest are clobbered BEFORE syscall due to different arg ordering
+ mov r10, r0 ; @fn
+ mov r11, r3 ; @args
+ mov r12, r2 ; @clone_flags
; adjust libc args for syscall
+
mov r0, r2 ; libc @flags is 1st syscall arg
mov r2, r4 ; libc @ptid
mov r3, r5 ; libc @tls
@@ -49,6 +56,21 @@ ENTRY(clone)
blt .L__sys_err2 ; < 0 (signed) error
jnz [blink] ; Parent returns
+ ; ----- child starts here ---------
+#ifdef RESET_PID
+ mov_s r2, CLONE_THREAD_N_VM
+ and_s r2, r2, r12
+ brne r2, r12, .Lgo_thread
+
+ mov r8, __NR_clone
+ ARC_TRAP_INSN ; r0 has PID
+ THREAD_SELF r1 ; Get to struct pthread (just before TCB)
+ st r0, [r1, PTHREAD_PID]
+ st r0, [r1, PTHREAD_TID]
+
+.Lgo_thread:
+#endif
+
; child jumps off to @fn with @arg as argument, and returns here
jl.d [r10]
mov r0, r11
diff --git a/libc/sysdeps/linux/arc/jmpbuf-unwind.h b/libc/sysdeps/linux/arc/jmpbuf-unwind.h
index e4ed8fe75f16..8c41816c5f6f 100644
--- a/libc/sysdeps/linux/arc/jmpbuf-unwind.h
+++ b/libc/sysdeps/linux/arc/jmpbuf-unwind.h
@@ -11,3 +11,20 @@
containing a local variable at ADDRESS. */
#define _JMPBUF_UNWINDS(jmpbuf, address) \
((void *) (address) < (void *) (jmpbuf[__JMP_BUF_SP]))
+
+#ifdef __UCLIBC_HAS_THREADS_NATIVE__
+#include <stdint.h>
+#include <unwind.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#undef _JMPBUF_UNWINDS
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+ ((void *) (address) < (void *) demangle (jmpbuf[__JMP_BUF_SP]))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[__JMP_BUF_SP] - (_adj))
+#endif
diff --git a/libc/sysdeps/linux/arc/sysdep.h b/libc/sysdeps/linux/arc/sysdep.h
index 76d3788e5c10..d75d89100440 100644
--- a/libc/sysdeps/linux/arc/sysdep.h
+++ b/libc/sysdeps/linux/arc/sysdep.h
@@ -19,4 +19,8 @@ nm:
#include <common/sysdep.h>
+/* Pointer mangling is not yet supported */
+#define PTR_MANGLE(var) (void) (var)
+#define PTR_DEMANGLE(var) (void) (var)
+
#endif
diff --git a/libc/sysdeps/linux/arc/vfork.S b/libc/sysdeps/linux/arc/vfork.S
index 11959b66b34c..573a29f26852 100644
--- a/libc/sysdeps/linux/arc/vfork.S
+++ b/libc/sysdeps/linux/arc/vfork.S
@@ -16,12 +16,25 @@
#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD)
ENTRY(__vfork)
+#ifdef SAVE_PID
+ THREAD_SELF r1 ; Get to struct pthread (just before TCB)
+ ld r2, [r1, PTHREAD_PID]
+ neg.f r3, r2
+ bset.z r3, r3, 31
+ st r3, [r1, PTHREAD_PID]
+#endif
mov r0, CLONE_FLAGS_FOR_VFORK
mov_s r1, sp
mov r8, __NR_clone
ARC_TRAP_INSN
cmp r0, 0
+#ifdef RESTORE_PID
+ bz 1f ; child continues
+ THREAD_SELF r1 ; Get to struct pthread (just before TCB)
+ st r2, [r1, PTHREAD_PID]
+1:
+#endif
jge [blink] ; pid >=0 return, else detour via tailcall to errno
b __syscall_error
diff --git a/libpthread/nptl/sysdeps/arc/Makefile.arch b/libpthread/nptl/sysdeps/arc/Makefile.arch
new file mode 100644
index 000000000000..1c728847e1eb
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/Makefile.arch
@@ -0,0 +1,13 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2005 Steven J. Hill <sjhill at uclibc.org>
+#
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+#
+
+CFLAGS-pt-raise.c = -DNOT_IN_libc -DIS_IN_libpthread
+
+ASFLAGS-pthread_spin_lock.S = -DNOT_IN_libc -DIS_IN_libpthread
+ASFLAGS-pthread_spin_trylock.S = -DNOT_IN_libc -DIS_IN_libpthread
+
+libc_arch_a_CSRC = libc-tls.c
diff --git a/libpthread/nptl/sysdeps/arc/dl-tls.h b/libpthread/nptl/sysdeps/arc/dl-tls.h
new file mode 100644
index 000000000000..34e54e4d30c1
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/dl-tls.h
@@ -0,0 +1,28 @@
+/* Thread-local storage handling in the ELF dynamic linker. ARC version.
+ Copyright (C) 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+
+/* Type used for the representation of TLS information in the GOT. */
+typedef struct
+{
+ unsigned long int ti_module;
+ unsigned long int ti_offset;
+} tls_index;
+
+
+extern void *__tls_get_addr (tls_index *ti);
diff --git a/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h b/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h
new file mode 100644
index 000000000000..11a043b23fe8
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h
@@ -0,0 +1,32 @@
+/* Copyright (C) 2005,2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <setjmp.h>
+#include <stdint.h>
+#include <unwind.h>
+
+/* Test if longjmp to JMPBUF would unwind the frame
+ containing a local variable at ADDRESS. */
+#undef _JMPBUF_UNWINDS
+#define _JMPBUF_UNWINDS(jmpbuf, address, demangle) \
+ ((void *) (address) < (void *) demangle (jmpbuf[__JMP_BUF_SP]))
+
+#define _JMPBUF_CFA_UNWINDS_ADJ(_jmpbuf, _context, _adj) \
+ _JMPBUF_UNWINDS_ADJ (_jmpbuf, (void *) _Unwind_GetCFA (_context), _adj)
+
+#define _JMPBUF_UNWINDS_ADJ(_jmpbuf, _address, _adj) \
+ ((uintptr_t) (_address) - (_adj) < (uintptr_t) (_jmpbuf)[__JMP_BUF_SP] - (_adj))
diff --git a/libpthread/nptl/sysdeps/arc/libc-tls.c b/libpthread/nptl/sysdeps/arc/libc-tls.c
new file mode 100644
index 000000000000..f53ad112e398
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/libc-tls.c
@@ -0,0 +1,27 @@
+/*
+ * Thread-local storage handling in statically linked binaries.
+ * Copyright (C) 2009 Free Software Foundation, Inc.
+ *
+ * Based on GNU C Library (file: libc/sysdeps/sh/libc-tls.c)
+ *
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ * Copyright (C) 2010 STMicroelectronics Ltd.
+ *
+ * Author: Filippo Arcidiacono <filippo.arcidiacono at st.com>
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sysdeps/generic/libc-tls.c>
+#include <dl-tls.h>
+
+#if defined(USE_TLS) && USE_TLS
+
+void *
+__tls_get_addr (tls_index *ti)
+{
+ dtv_t *dtv = THREAD_DTV ();
+ return (char *) dtv[1].pointer.val + ti->ti_offset;
+}
+
+#endif
diff --git a/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S b/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S
new file mode 100644
index 000000000000..7a5e630b80af
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/pthread_spin_lock.S
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sysdep.h>
+
+; int pthread_spin_lock(pthread_spinlock_t *lock)
+; 1 - locked, 0 - unlocked
+
+ENTRY(pthread_spin_lock)
+ mov_s r1, 1
+ nop_s
+1:
+ ex r1, [r0]
+ breq r1, 1, 1b
+
+ j.d [blink]
+ mov r0, 0
+END(pthread_spin_lock)
diff --git a/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S b/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S
new file mode 100644
index 000000000000..25f5421a23d8
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sysdep.h>
+
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+; int pthread_spin_trylock(pthread_spinlock_t *lock)
+; Return EBUSY is already locked, 0 if not
+
+ENTRY(pthread_spin_trylock)
+ mov_s r1, 1
+ ex r1, [r0]
+ tst r1, r1
+ mov.z r0, 0
+ j.d [blink]
+ mov.nz r0, EBUSY
+
+; slightly faster, but difficult to follow
+; mov_s r1, r0
+; mov_s r0, 1
+; ex r0, [r1]
+; tst r0, r0
+; j.d [blink]
+; mov.nz r0, EBUSY
+
+END(pthread_spin_trylock)
diff --git a/libpthread/nptl/sysdeps/arc/pthreaddef.h b/libpthread/nptl/sysdeps/arc/pthreaddef.h
new file mode 100644
index 000000000000..51625e4e6f18
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/pthreaddef.h
@@ -0,0 +1,40 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <sysdep.h>
+
+/* Default stack size. */
+#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024)
+
+/* Required stack pointer alignment at beginning. */
+#define STACK_ALIGN 8
+
+/* Minimal stack size after allocating thread descriptor and guard size. */
+#define MINIMAL_REST_STACK 2048
+
+/* Alignment requirement for TCB. */
+#define TCB_ALIGNMENT 8
+
+
+/* Location of current stack frame. */
+#define CURRENT_STACK_FRAME __builtin_frame_address (0)
+
+
+/* XXX Until we have a better place keep the definitions here. */
+#define __exit_thread_inline(val) \
+ INLINE_SYSCALL (exit, 1, (val))
diff --git a/libpthread/nptl/sysdeps/arc/tcb-offsets.sym b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym
new file mode 100644
index 000000000000..cbf0ae42ca61
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/tcb-offsets.sym
@@ -0,0 +1,8 @@
+#include <sysdep.h>
+#include <tls.h>
+
+PTHREAD_TID offsetof (struct pthread, tid)
+PTHREAD_PID offsetof (struct pthread, pid)
+MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads)
+TLS_PRE_TCB_SIZE sizeof (struct pthread)
+TLS_TCB_SIZE sizeof(tcbhead_t)
diff --git a/libpthread/nptl/sysdeps/arc/tls.h b/libpthread/nptl/sysdeps/arc/tls.h
new file mode 100644
index 000000000000..63dd11398522
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/tls.h
@@ -0,0 +1,160 @@
+/* Definition for thread-local data handling. NPTL/ARC version.
+ *
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#ifndef _TLS_H
+#define _TLS_H
+
+#ifndef __ASSEMBLER__
+# include <stdbool.h>
+# include <stddef.h>
+# include <stdint.h>
+# include <stdlib.h>
+# include <list.h>
+# include <sysdep.h>
+# include <bits/kernel-features.h>
+
+/* Type for the dtv. */
+typedef union dtv
+{
+ size_t counter;
+ struct
+ {
+ void *val;
+ bool is_static;
+ } pointer;
+} dtv_t;
+
+typedef struct
+{
+ dtv_t *dtv;
+ uintptr_t pointer_guard;
+} tcbhead_t;
+
+# define TLS_MULTIPLE_THREADS_IN_TCB 1
+
+#else /* __ASSEMBLER__ */
+# include <tcb-offsets.h>
+
+.macro THREAD_SELF reg
+ # struct pthread is just ahead of TCB
+ sub \reg, r25, TLS_PRE_TCB_SIZE
+.endm
+
+.macro SET_TP tcb
+ mov r25, \tcb
+.endm
+
+#endif /* __ASSEMBLER__ */
+
+
+/* We require TLS support in the tools. */
+#define HAVE_TLS_SUPPORT
+#define HAVE___THREAD 1
+#define HAVE_TLS_MODEL_ATTRIBUTE 1
+/* Signal that TLS support is available. */
+# define USE_TLS 1
+
+#ifndef __ASSEMBLER__
+
+/* Get system call information. */
+# include <sysdep.h>
+
+/* This is the size of the initial TCB. */
+# define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
+
+/* Alignment requirements for the initial TCB. */
+# define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
+
+/* This is the size of the TCB. */
+#ifndef TLS_TCB_SIZE
+# define TLS_TCB_SIZE sizeof (tcbhead_t)
+#endif
+
+/* This is the size we need before TCB. */
+# define TLS_PRE_TCB_SIZE sizeof (struct pthread)
+
+/* Alignment requirements for the TCB. */
+# define TLS_TCB_ALIGN __alignof__ (struct pthread)
+
+/* The TLS blocks start right after the TCB. */
+# define TLS_DTV_AT_TP 1
+
+/* Get the thread descriptor definition. */
+# include <descr.h>
+
+/* Install the dtv pointer. The pointer passed is to the element with
+ index -1 which contain the length. */
+# define INSTALL_DTV(tcbp, dtvp) \
+ ((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1
+
+/* Install new dtv for current thread. */
+# define INSTALL_NEW_DTV(dtv) \
+ (THREAD_DTV() = (dtv))
+
+/* Return dtv of given thread descriptor. */
+# define GET_DTV(tcbp) \
+ (((tcbhead_t *) (tcbp))->dtv)
+
+/* Code to initially initialize the thread pointer. This might need
+ special attention since 'errno' is not yet available and if the
+ operation can cause a failure 'errno' must not be touched. */
+# define TLS_INIT_TP(tcbp, secondcall) \
+ ({ \
+ __builtin_set_thread_pointer(tcbp); \
+ NULL; \
+ })
+
+/* Return the address of the dtv for the current thread.
+ TP points to TCB where 1st item is dtv pointer */
+# define THREAD_DTV() \
+ (((tcbhead_t *)__builtin_thread_pointer())->dtv)
+
+/* Return the thread descriptor for the current thread.
+ pthread sits right before TCB */
+# define THREAD_SELF \
+ ((struct pthread *)__builtin_thread_pointer() - 1)
+
+/* Magic for libthread_db to know how to do THREAD_SELF. */
+# define DB_THREAD_SELF \
+ CONST_THREAD_AREA (32, sizeof (struct pthread))
+
+/* Access to data in the thread descriptor is easy. */
+#define THREAD_GETMEM(descr, member) \
+ descr->member
+#define THREAD_GETMEM_NC(descr, member, idx) \
+ descr->member[idx]
+#define THREAD_SETMEM(descr, member, value) \
+ descr->member = (value)
+#define THREAD_SETMEM_NC(descr, member, idx, value) \
+ descr->member[idx] = (value)
+
+/* Get and set the global scope generation counter in struct pthread. */
+#define THREAD_GSCOPE_FLAG_UNUSED 0
+#define THREAD_GSCOPE_FLAG_USED 1
+#define THREAD_GSCOPE_FLAG_WAIT 2
+#define THREAD_GSCOPE_RESET_FLAG() \
+ do \
+ { int __res \
+ = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
+ THREAD_GSCOPE_FLAG_UNUSED); \
+ if (__res == THREAD_GSCOPE_FLAG_WAIT) \
+ lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_SET_FLAG() \
+ do \
+ { \
+ THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
+ atomic_write_barrier (); \
+ } \
+ while (0)
+#define THREAD_GSCOPE_WAIT() \
+ GL(dl_wait_lookup_done) ()
+
+#endif /* __ASSEMBLER__ */
+
+#endif /* tls.h */
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile
new file mode 100644
index 000000000000..729adf6f9d01
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile
@@ -0,0 +1,13 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2005 Steven J. Hill <sjhill at uclibc.org>
+#
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+#
+
+top_srcdir=../../../../../../../
+top_builddir=../../../../../../../
+all: objs
+include $(top_builddir)Rules.mak
+include Makefile.arch
+include $(top_srcdir)Makerules
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
new file mode 100644
index 000000000000..25e6fadbfdba
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/Makefile.arch
@@ -0,0 +1,32 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2006 Steven J. Hill <sjhill at uclibc.org>
+#
+# Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+#
+
+libpthread_linux_arch_SSRC = pt-vfork.S
+libpthread_linux_arch_CSRC = pthread_once.c lowlevellock.c \
+ pt-__syscall_rt_sigaction.c pt-__syscall_error.c
+
+libc_linux_arch_CSRC = fork.c libc-lowlevellock.c
+libc_linux_arch_SSRC = clone.S vfork.S
+libc_linux_arch_SSRC-OMIT = waitpid.S
+
+CFLAGS-pthread_once.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-pt-__syscall_rt_sigaction.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-pt-__syscall_error.c = -DNOT_IN_libc -DIS_IN_libpthread
+ASFLAGS-pt-vfork.S = -DNOT_IN_libc -DIS_IN_libpthread
+
+ASFLAGS-vfork.S = -DIS_IN_libc -DNOT_IN_libpthread
+ASFLAGS-clone.S = -DIS_IN_libc -DNOT_IN_libpthread
+
+ifeq ($(UCLIBC_HAS_STDIO_FUTEXES),y)
+CFLAGS-fork.c = -D__USE_STDIO_FUTEXES__
+endif
+CFLAGS-OMIT-fork.c = -DNOT_IN_libc -DIS_IN_libpthread
+CFLAGS-OMIT-libc-lowlevellock.c = -DNOT_IN_libc -DIS_IN_libpthread
+# We always compile it in arm mode because of SAVE_PID macro
+# This macro should be alternatively implemented in THUMB
+# assembly.
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h
new file mode 100644
index 000000000000..e1b115c8ca1d
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/pthreadtypes.h
@@ -0,0 +1,181 @@
+/* Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _BITS_PTHREADTYPES_H
+#define _BITS_PTHREADTYPES_H 1
+
+#include <endian.h>
+
+#define __SIZEOF_PTHREAD_ATTR_T 36
+#define __SIZEOF_PTHREAD_MUTEX_T 24
+#define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+#define __SIZEOF_PTHREAD_COND_T 48
+#define __SIZEOF_PTHREAD_COND_COMPAT_T 12
+#define __SIZEOF_PTHREAD_CONDATTR_T 4
+#define __SIZEOF_PTHREAD_RWLOCK_T 32
+#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+#define __SIZEOF_PTHREAD_BARRIER_T 20
+#define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+
+
+/* Thread identifiers. The structure of the attribute type is not
+ exposed on purpose. */
+typedef unsigned long int pthread_t;
+
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_ATTR_T];
+ long int __align;
+} pthread_attr_t;
+
+
+typedef struct __pthread_internal_slist
+{
+ struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+
+
+/* Data structures for mutex handling. The structure of the attribute
+ type is not exposed on purpose. */
+typedef union
+{
+ struct __pthread_mutex_s
+ {
+ int __lock;
+ unsigned int __count;
+ int __owner;
+ /* KIND must stay at this position in the structure to maintain
+ binary compatibility. */
+ int __kind;
+ unsigned int __nusers;
+ __extension__ union
+ {
+ int __spins;
+ __pthread_slist_t __list;
+ };
+ } __data;
+ char __size[__SIZEOF_PTHREAD_MUTEX_T];
+ long int __align;
+} pthread_mutex_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
+ long int __align;
+} pthread_mutexattr_t;
+
+
+/* Data structure for conditional variable handling. The structure of
+ the attribute type is not exposed on purpose. */
+typedef union
+{
+ struct
+ {
+ int __lock;
+ unsigned int __futex;
+ __extension__ unsigned long long int __total_seq;
+ __extension__ unsigned long long int __wakeup_seq;
+ __extension__ unsigned long long int __woken_seq;
+ void *__mutex;
+ unsigned int __nwaiters;
+ unsigned int __broadcast_seq;
+ } __data;
+ char __size[__SIZEOF_PTHREAD_COND_T];
+ __extension__ long long int __align;
+} pthread_cond_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_CONDATTR_T];
+ long int __align;
+} pthread_condattr_t;
+
+
+/* Keys for thread-specific data */
+typedef unsigned int pthread_key_t;
+
+
+/* Once-only execution */
+typedef int pthread_once_t;
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+/* Data structure for read-write lock variable handling. The
+ structure of the attribute type is not exposed on purpose. */
+typedef union
+{
+ struct
+ {
+ int __lock;
+ unsigned int __nr_readers;
+ unsigned int __readers_wakeup;
+ unsigned int __writer_wakeup;
+ unsigned int __nr_readers_queued;
+ unsigned int __nr_writers_queued;
+#if __BYTE_ORDER == __BIG_ENDIAN
+ unsigned char __pad1;
+ unsigned char __pad2;
+ unsigned char __shared;
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned char __flags;
+#else
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned char __flags;
+ unsigned char __shared;
+ unsigned char __pad1;
+ unsigned char __pad2;
+#endif
+ int __writer;
+ } __data;
+ char __size[__SIZEOF_PTHREAD_RWLOCK_T];
+ long int __align;
+} pthread_rwlock_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
+ long int __align;
+} pthread_rwlockattr_t;
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* POSIX spinlock data type. */
+typedef volatile int pthread_spinlock_t;
+
+
+/* POSIX barriers data type. The structure of the type is
+ deliberately not exposed. */
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIER_T];
+ long int __align;
+} pthread_barrier_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
+ int __align;
+} pthread_barrierattr_t;
+#endif
+
+
+#endif /* bits/pthreadtypes.h */
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h
new file mode 100644
index 000000000000..dadfac2af2cb
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/bits/semaphore.h
@@ -0,0 +1,35 @@
+/* Copyright (C) 2002, 2005, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SEMAPHORE_H
+# error "Never use <bits/semaphore.h> directly; include <semaphore.h> instead."
+#endif
+
+
+#define __SIZEOF_SEM_T 16
+
+
+/* Value returned if `sem_open' failed. */
+#define SEM_FAILED ((sem_t *) 0)
+
+
+typedef union
+{
+ char __size[__SIZEOF_SEM_T];
+ long int __align;
+} sem_t;
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
new file mode 100644
index 000000000000..5fd1de3c2061
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/clone.S
@@ -0,0 +1,10 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#define RESET_PID
+#include <tls.h>
+#include <tcb-offsets.h>
+#include "../../../../../../../libc/sysdeps/linux/arc/clone.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c
new file mode 100644
index 000000000000..78719015fd2a
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/createthread.c
@@ -0,0 +1,25 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* Internal clone callers pass struct pthread, but thread TP register
+ * needs to point to TLS block (struct tcbhead) which is right after */
+
+#define TLS_VALUE (pd + 1)
+
+/* Get the real implementation. */
+#include <sysdeps/pthread/createthread.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c
new file mode 100644
index 000000000000..2578af6f4460
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/fork.c
@@ -0,0 +1,30 @@
+/* Copyright (C) 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Phil Blundell <pb at nexus.co.uk>, 2005
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <sched.h>
+#include <signal.h>
+#include <sysdep.h>
+#include <tls.h>
+
+
+#define ARCH_FORK() \
+ INLINE_SYSCALL (clone, 5, \
+ CLONE_CHILD_SETTID | CLONE_CHILD_CLEARTID | SIGCHLD, \
+ NULL, NULL, NULL, &THREAD_SELF->tid)
+
+#include "../fork.c"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c
new file mode 100644
index 000000000000..b19282281c2b
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/libc-lowlevellock.c
@@ -0,0 +1,21 @@
+/* Copyright (C) 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus at au.ibm.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+/* No difference to lowlevellock.c, except we lose a couple of functions. */
+#include "lowlevellock.c"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c
new file mode 100644
index 000000000000..1aa79609a713
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.c
@@ -0,0 +1,126 @@
+/* low level locking for pthread library. Generic futex-using version.
+ Copyright (C) 2003, 2007 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Paul Mackerras <paulus at au.ibm.com>, 2003.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <sysdep.h>
+#include <lowlevellock.h>
+#include <sys/time.h>
+#include <tls.h>
+#include <tcb-offsets.h>
+
+
+void
+__lll_lock_wait_private (int *futex)
+{
+ if (*futex == 2)
+ lll_futex_wait (futex, 2, LLL_PRIVATE);
+
+ while (atomic_exchange_acq (futex, 2) != 0)
+ lll_futex_wait (futex, 2, LLL_PRIVATE);
+}
+
+
+/* These functions don't get included in libc.so */
+#ifdef IS_IN_libpthread
+void
+__lll_lock_wait (int *futex, int private)
+{
+ if (*futex == 2)
+ lll_futex_wait (futex, 2, private);
+
+ while (atomic_exchange_acq (futex, 2) != 0)
+ lll_futex_wait (futex, 2, private);
+}
+
+
+int
+__lll_timedlock_wait (int *futex, const struct timespec *abstime, int private)
+{
+ /* Reject invalid timeouts. */
+ if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ /* Try locking. */
+ while (atomic_exchange_acq (futex, 2) != 0)
+ {
+ struct timeval tv;
+
+ /* Get the current time. */
+ (void) gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ struct timespec rt;
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+
+ if (rt.tv_sec < 0)
+ return ETIMEDOUT;
+
+ /* Wait. */
+ lll_futex_timed_wait (futex, 2, &rt, private);
+ }
+
+ return 0;
+}
+
+
+int
+__lll_timedwait_tid (int *tidp, const struct timespec *abstime)
+{
+ int tid;
+
+ if (abstime->tv_nsec < 0 || abstime->tv_nsec >= 1000000000)
+ return EINVAL;
+
+ /* Repeat until thread terminated. */
+ while ((tid = *tidp) != 0)
+ {
+ struct timeval tv;
+ struct timespec rt;
+
+ /* Get the current time. */
+ (void) __gettimeofday (&tv, NULL);
+
+ /* Compute relative timeout. */
+ rt.tv_sec = abstime->tv_sec - tv.tv_sec;
+ rt.tv_nsec = abstime->tv_nsec - tv.tv_usec * 1000;
+ if (rt.tv_nsec < 0)
+ {
+ rt.tv_nsec += 1000000000;
+ --rt.tv_sec;
+ }
+
+ /* Already timed out? */
+ if (rt.tv_sec < 0)
+ return ETIMEDOUT;
+
+ /* Wait until thread terminates. The kernel so far does not use
+ the private futex operations for this. */
+ if (lll_futex_timed_wait (tidp, tid, &rt, LLL_SHARED) == -ETIMEDOUT)
+ return ETIMEDOUT;
+ }
+
+ return 0;
+}
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h
new file mode 100644
index 000000000000..99ada5d50914
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/lowlevellock.h
@@ -0,0 +1,279 @@
+/* Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _LOWLEVELLOCK_H
+#define _LOWLEVELLOCK_H 1
+
+#include <time.h>
+#include <sys/param.h>
+#include <bits/pthreadtypes.h>
+#include <atomic.h>
+#include <sysdep.h>
+#include <bits/kernel-features.h>
+
+#define FUTEX_WAIT 0
+#define FUTEX_WAKE 1
+#define FUTEX_REQUEUE 3
+#define FUTEX_CMP_REQUEUE 4
+#define FUTEX_WAKE_OP 5
+#define FUTEX_OP_CLEAR_WAKE_IF_GT_ONE ((4 << 24) | 1)
+#define FUTEX_LOCK_PI 6
+#define FUTEX_UNLOCK_PI 7
+#define FUTEX_TRYLOCK_PI 8
+#define FUTEX_WAIT_BITSET 9
+#define FUTEX_WAKE_BITSET 10
+#define FUTEX_PRIVATE_FLAG 128
+#define FUTEX_CLOCK_REALTIME 256
+
+#define FUTEX_BITSET_MATCH_ANY 0xffffffff
+
+/* Values for 'private' parameter of locking macros. Yes, the
+ definition seems to be backwards. But it is not. The bit will be
+ reversed before passing to the system call. */
+#define LLL_PRIVATE 0
+#define LLL_SHARED FUTEX_PRIVATE_FLAG
+
+
+#if !defined NOT_IN_libc || defined IS_IN_rtld
+/* In libc.so or ld.so all futexes are private. */
+# ifdef __ASSUME_PRIVATE_FUTEX
+# define __lll_private_flag(fl, private) \
+ ((fl) | FUTEX_PRIVATE_FLAG)
+# else
+# define __lll_private_flag(fl, private) \
+ ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
+# endif
+#else
+# ifdef __ASSUME_PRIVATE_FUTEX
+# define __lll_private_flag(fl, private) \
+ (((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
+# else
+# define __lll_private_flag(fl, private) \
+ (__builtin_constant_p (private) \
+ ? ((private) == 0 \
+ ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \
+ : (fl)) \
+ : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \
+ & THREAD_GETMEM (THREAD_SELF, header.private_futex))))
+# endif
+#endif
+
+
+#define lll_futex_wait(futexp, val, private) \
+ lll_futex_timed_wait(futexp, val, NULL, private)
+
+#define lll_futex_timed_wait(futexp, val, timespec, private) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (__err); \
+ long int __ret; \
+ __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
+ __lll_private_flag (FUTEX_WAIT, private), \
+ (val), (timespec)); \
+ __ret; \
+ })
+
+#define lll_futex_wake(futexp, nr, private) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (__err); \
+ long int __ret; \
+ __ret = INTERNAL_SYSCALL (futex, __err, 4, (futexp), \
+ __lll_private_flag (FUTEX_WAKE, private), \
+ (nr), 0); \
+ __ret; \
+ })
+
+#define lll_robust_dead(futexv, private) \
+ do \
+ { \
+ int *__futexp = &(futexv); \
+ atomic_or (__futexp, FUTEX_OWNER_DIED); \
+ lll_futex_wake (__futexp, 1, private); \
+ } \
+ while (0)
+
+/* Returns non-zero if error happened, zero if success. */
+#define lll_futex_requeue(futexp, nr_wake, nr_move, mutex, val, private) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (__err); \
+ long int __ret; \
+ __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
+ __lll_private_flag (FUTEX_CMP_REQUEUE, private),\
+ (nr_wake), (nr_move), (mutex), (val)); \
+ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
+ })
+
+
+/* Returns non-zero if error happened, zero if success. */
+#define lll_futex_wake_unlock(futexp, nr_wake, nr_wake2, futexp2, private) \
+ ({ \
+ INTERNAL_SYSCALL_DECL (__err); \
+ long int __ret; \
+ __ret = INTERNAL_SYSCALL (futex, __err, 6, (futexp), \
+ __lll_private_flag (FUTEX_WAKE_OP, private), \
+ (nr_wake), (nr_wake2), (futexp2), \
+ FUTEX_OP_CLEAR_WAKE_IF_GT_ONE); \
+ INTERNAL_SYSCALL_ERROR_P (__ret, __err); \
+ })
+
+
+#define lll_trylock(lock) \
+ atomic_compare_and_exchange_val_acq(&(lock), 1, 0)
+
+#define lll_cond_trylock(lock) \
+ atomic_compare_and_exchange_val_acq(&(lock), 2, 0)
+
+#define __lll_robust_trylock(futex, id) \
+ (atomic_compare_and_exchange_val_acq (futex, id, 0) != 0)
+#define lll_robust_trylock(lock, id) \
+ __lll_robust_trylock (&(lock), id)
+
+extern void __lll_lock_wait_private (int *futex) attribute_hidden;
+extern void __lll_lock_wait (int *futex, int private) attribute_hidden;
+extern int __lll_robust_lock_wait (int *futex, int private) attribute_hidden;
+
+#define __lll_lock(futex, private) \
+ ((void) ({ \
+ int *__futex = (futex); \
+ if (unlikely(atomic_compare_and_exchange_val_acq (__futex, 1, 0))) \
+ { \
+ if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \
+ __lll_lock_wait_private (__futex); \
+ else \
+ __lll_lock_wait (__futex, private); \
+ } \
+ }))
+#define lll_lock(futex, private) __lll_lock (&(futex), private)
+
+
+#define __lll_robust_lock(futex, id, private) \
+ ({ \
+ int *__futex = (futex); \
+ int __val = 0; \
+ \
+ if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \
+ __val = __lll_robust_lock_wait (__futex, private); \
+ __val; \
+ })
+#define lll_robust_lock(futex, id, private) \
+ __lll_robust_lock (&(futex), id, private)
+
+
+#define __lll_cond_lock(futex, private) \
+ ((void) ({ \
+ int *__futex = (futex); \
+ if (unlikely(atomic_exchange_acq (__futex, 2))) \
+ __lll_lock_wait (__futex, private); \
+ }))
+#define lll_cond_lock(futex, private) __lll_cond_lock (&(futex), private)
+
+
+#define lll_robust_cond_lock(futex, id, private) \
+ __lll_robust_lock (&(futex), (id) | FUTEX_WAITERS, private)
+
+
+extern int __lll_timedlock_wait (int *futex, const struct timespec *,
+ int private) attribute_hidden;
+extern int __lll_robust_timedlock_wait (int *futex, const struct timespec *,
+ int private) attribute_hidden;
+
+#define __lll_timedlock(futex, abstime, private) \
+ ({ \
+ int *__futex = (futex); \
+ int __val = 0; \
+ \
+ if (unlikely(atomic_exchange_acq (__futex, 1))) \
+ __val = __lll_timedlock_wait (__futex, abstime, private); \
+ __val; \
+ })
+#define lll_timedlock(futex, abstime, private) \
+ __lll_timedlock (&(futex), abstime, private)
+
+
+#define __lll_robust_timedlock(futex, abstime, id, private) \
+ ({ \
+ int *__futex = (futex); \
+ int __val = 0; \
+ \
+ if (unlikely(atomic_compare_and_exchange_bool_acq (__futex, id, 0))) \
+ __val = __lll_robust_timedlock_wait (__futex, abstime, private); \
+ __val; \
+ })
+#define lll_robust_timedlock(futex, abstime, id, private) \
+ __lll_robust_timedlock (&(futex), abstime, id, private)
+
+
+#define __lll_unlock(futex, private) \
+ (void) \
+ ({ int *__futex = (futex); \
+ int __oldval = atomic_exchange_rel (__futex, 0); \
+ if (unlikely(__oldval > 1)) \
+ lll_futex_wake (__futex, 1, private); \
+ })
+#define lll_unlock(futex, private) __lll_unlock(&(futex), private)
+
+
+#define __lll_robust_unlock(futex, private) \
+ (void) \
+ ({ int *__futex = (futex); \
+ int __oldval = atomic_exchange_rel (__futex, 0); \
+ if (unlikely(__oldval & FUTEX_WAITERS)) \
+ lll_futex_wake (__futex, 1, private); \
+ })
+#define lll_robust_unlock(futex, private) \
+ __lll_robust_unlock(&(futex), private)
+
+
+#define lll_islocked(futex) \
+ (futex != 0)
+
+
+/* Our internal lock implementation is identical to the binary-compatible
+ mutex implementation. */
+
+/* Initializers for lock. */
+#define LLL_LOCK_INITIALIZER (0)
+#define LLL_LOCK_INITIALIZER_LOCKED (1)
+
+/* The states of a lock are:
+ 0 - untaken
+ 1 - taken by one user
+ >1 - taken by more users */
+
+/* The kernel notifies a process which uses CLONE_CLEARTID via futex
+ wakeup when the clone terminates. The memory location contains the
+ thread ID while the clone is running and is reset to zero
+ afterwards. */
+#define lll_wait_tid(tid) \
+ do { \
+ __typeof (tid) __tid; \
+ while ((__tid = (tid)) != 0) \
+ lll_futex_wait (&(tid), __tid, LLL_SHARED);\
+ } while (0)
+
+extern int __lll_timedwait_tid (int *, const struct timespec *)
+ attribute_hidden;
+
+#define lll_timedwait_tid(tid, abstime) \
+ ({ \
+ int __res = 0; \
+ if ((tid) != 0) \
+ __res = __lll_timedwait_tid (&(tid), (abstime)); \
+ __res; \
+ })
+
+#endif /* lowlevellock.h */
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c
new file mode 100644
index 000000000000..8002e65c33af
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_error.c
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <../../../../../../../libc/sysdeps/linux/arc/__syscall_error.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c
new file mode 100644
index 000000000000..346651826ece
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-__syscall_rt_sigaction.c
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <../../../../../../../libc/sysdeps/linux/arc/sigaction.c>
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c
new file mode 100644
index 000000000000..d9fc3531fe12
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-gettimeofday.c
@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sys/time.h>
+
+int gettimeofday (struct timeval *, struct timezone *) attribute_hidden;
+_syscall2(int, gettimeofday, struct timeval *, tv, struct timezone *, tz);
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S
new file mode 100644
index 000000000000..f222dca43b2f
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pt-vfork.S
@@ -0,0 +1,7 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include "vfork.S"
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c
new file mode 100644
index 000000000000..e977a7d0c11d
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/pthread_once.c
@@ -0,0 +1,100 @@
+/* Copyright (C) 2004, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "pthreadP.h"
+#include <lowlevellock.h>
+
+unsigned long int __fork_generation attribute_hidden;
+
+static void
+clear_once_control (void *arg)
+{
+ pthread_once_t *once_control = (pthread_once_t *) arg;
+
+ *once_control = 0;
+ lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
+}
+
+int
+attribute_protected
+__pthread_once (pthread_once_t *once_control, void (*init_routine) (void))
+{
+ for (;;)
+ {
+ int oldval;
+ int newval;
+
+ /* Pseudo code:
+ newval = __fork_generation | 1;
+ oldval = *once_control;
+ if ((oldval & 2) == 0)
+ *once_control = newval;
+ Do this atomically.
+ */
+ do
+ {
+ newval = __fork_generation | 1;
+ oldval = *once_control;
+ if (oldval & 2)
+ break;
+ } while (atomic_compare_and_exchange_val_acq (once_control, newval, oldval) != oldval);
+
+ /* Check if the initializer has already been done. */
+ if ((oldval & 2) != 0)
+ return 0;
+
+ /* Check if another thread already runs the initializer. */
+ if ((oldval & 1) == 0)
+ break;
+
+ /* Check whether the initializer execution was interrupted by a fork. */
+ if (oldval != newval)
+ break;
+
+ /* Same generation, some other thread was faster. Wait. */
+ lll_futex_wait (once_control, oldval, LLL_PRIVATE);
+ }
+
+ /* This thread is the first here. Do the initialization.
+ Register a cleanup handler so that in case the thread gets
+ interrupted the initialization can be restarted. */
+ pthread_cleanup_push (clear_once_control, once_control);
+
+ init_routine ();
+
+ pthread_cleanup_pop (0);
+
+ /* Say that the initialisation is done. */
+ *once_control = __fork_generation | 2;
+
+ /* Wake up all other threads. */
+ lll_futex_wake (once_control, INT_MAX, LLL_PRIVATE);
+
+ return 0;
+}
+weak_alias (__pthread_once, pthread_once)
+strong_alias (__pthread_once, __pthread_once_internal)
+
+#if defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__PIC__)
+/* When statically linked, if pthread_create is used, this file
+ will be brought in. The exception handling code in GCC assumes
+ that if pthread_create is available, so are these. */
+const void *include_pthread_getspecific attribute_hidden = pthread_getspecific;
+const void *include_pthread_setspecific attribute_hidden = pthread_setspecific;
+const void *include_pthread_key_create attribute_hidden = pthread_key_create;
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
new file mode 100644
index 000000000000..cddd754a8680
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/sysdep-cancel.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <tls.h>
+#include <sysdep.h>
+#ifndef __ASSEMBLER__
+# include <pthreadP.h>
+#endif
+
+#if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt
+
+#ifdef __ASSEMBLER__
+
+#undef ret
+#define ret
+
+# undef PSEUDO
+# define PSEUDO(name, syscall_name, nargs) \
+ /* vanilla version */ ` \
+ ENTRY(name##_nocancel) ` \
+ DO_CALL (__NR_##syscall_name) ` \
+ jls [blink] ` \
+ b __syscall_error at plt ` \
+ END(name##_nocancel) ` \
+ /* thread cancellation variant */ ` \
+ ENTRY(name) ` \
+ SINGLE_THREAD_P ` \
+ bz name##_nocancel ` \
+ DOCARGS_##nargs /* stash syscall args */ ` \
+ CENABLE /* call enable_asynccancel */ ` \
+ mov r9, r0 /* Safe-keep mask */ ` \
+ UNDOCARGS_##nargs /* restore syscall args */ ` \
+ DO_CALL (__NR_##syscall_name) ` \
+ push r0 /* save syscall return value */ ` \
+ mov r0, r9 /* prep mask for disable_asynccancel */ ` \
+ CDISABLE ` \
+ pop r0 /* get syscall ret value back */ ` \
+ cmp r0, -1024 ` \
+ jls [blink] ` \
+ b __syscall_error at plt ` \
+ END(name)
+
+#undef PSEUDO_END
+#define PSEUDO_END(name) \
+
+# ifdef IS_IN_libpthread
+# define CENABLE bl __pthread_enable_asynccancel
+# define CDISABLE bl __pthread_disable_asynccancel
+# define __local_multiple_threads __pthread_multiple_threads
+# elif !defined NOT_IN_libc
+# define CENABLE bl __libc_enable_asynccancel
+# define CDISABLE bl __libc_disable_asynccancel
+# define __local_multiple_threads __libc_multiple_threads
+# elif defined IS_IN_librt
+# define CENABLE bl __librt_enable_asynccancel
+# define CDISABLE bl __librt_disable_asynccancel
+# else
+# error Unsupported library
+# endif
+
+#define DO_CALL(num) \
+ mov r8, num ` \
+ ARC_TRAP_INSN ` \
+ cmp r0, -1024
+
+.macro push reg
+ st.a \reg, [sp, -4]
+.endm
+
+.macro pop reg
+ ld.ab \reg, [sp, 4]
+.endm
+
+#define DOCARGS_0 push blink
+#define UNDOCARGS_0 pop blink
+
+#define DOCARGS_1 DOCARGS_0` push r0
+#define UNDOCARGS_1 pop r0` UNDOCARGS_0
+
+#define DOCARGS_2 DOCARGS_1` push r1
+#define UNDOCARGS_2 pop r1` UNDOCARGS_1
+
+#define DOCARGS_3 DOCARGS_2` push r2
+#define UNDOCARGS_3 pop r2` UNDOCARGS_2
+
+#define DOCARGS_4 DOCARGS_3` push r3
+#define UNDOCARGS_4 pop r3` UNDOCARGS_3
+
+#define DOCARGS_5 DOCARGS_4` push r4
+#define UNDOCARGS_5 pop r4` UNDOCARGS_4
+
+#define DOCARGS_6 DOCARGS_5` push r5
+#define UNDOCARGS_6 pop r5` UNDOCARGS_5
+
+#define DOCARGS_7 DOCARGS_6` push r6
+#define UNDOCARGS_7 pop r6` UNDOCARGS_6
+
+# define SINGLE_THREAD_P \
+ THREAD_SELF r1 ` \
+ ld r2, [r1, MULTIPLE_THREADS_OFFSET]` \
+ cmp r2, 0
+
+/* ld r2, [r1, -TLS_PRE_TCB_SIZE + MULTIPLE_THREADS_OFFSET] */
+#else /* !__ASSEMBLER__ */
+
+/* TBD: Can use @__local_multiple_threads for libc/libpthread like ARM */
+# define SINGLE_THREAD_P \
+ likely(THREAD_GETMEM (THREAD_SELF, header.multiple_threads) == 0)
+
+#endif /* __ASSEMBLER__ */
+
+#endif
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
new file mode 100644
index 000000000000..d29e05a8a871
--- /dev/null
+++ b/libpthread/nptl/sysdeps/unix/sysv/linux/arc/vfork.S
@@ -0,0 +1,11 @@
+/*
+ * Copyright (C) 2013 Synopsys, Inc. (www.synopsys.com)
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#define SAVE_PID
+#define RESTORE_PID
+#include <tls.h>
+#include <tcb-offsets.h>
+#include "../../../../../../../libc/sysdeps/linux/arc/vfork.S"
--
1.8.3.2
More information about the uClibc
mailing list