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authorVineet Gupta <vgupta@synopsys.com>2014-07-25 17:39:05 +0530
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2014-08-18 11:52:34 +0200
commit873fa5beccbb4e95d1bbb9afb6a0eec02811f09b (patch)
tree17ceb2c595fe9a491f3e7fa91d7c379babf2c356 /libpthread/nptl/sysdeps/arc
parent6915b3a6b96e8e34601941c0eb7519cde1c0f999 (diff)
NPTL: ARC support
Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libpthread/nptl/sysdeps/arc')
-rw-r--r--libpthread/nptl/sysdeps/arc/Makefile.arch13
-rw-r--r--libpthread/nptl/sysdeps/arc/dl-tls.h28
-rw-r--r--libpthread/nptl/sysdeps/arc/jmpbuf-unwind.h32
-rw-r--r--libpthread/nptl/sysdeps/arc/libc-tls.c27
-rw-r--r--libpthread/nptl/sysdeps/arc/pthread_spin_lock.S21
-rw-r--r--libpthread/nptl/sysdeps/arc/pthread_spin_trylock.S31
-rw-r--r--libpthread/nptl/sysdeps/arc/pthreaddef.h40
-rw-r--r--libpthread/nptl/sysdeps/arc/tcb-offsets.sym8
-rw-r--r--libpthread/nptl/sysdeps/arc/tls.h160
9 files changed, 360 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/arc/Makefile.arch b/libpthread/nptl/sysdeps/arc/Makefile.arch
new file mode 100644
index 000000000..1c728847e
--- /dev/null
+++ b/libpthread/nptl/sysdeps/arc/Makefile.arch
@@ -0,0 +1,13 @@
+# Makefile for uClibc NPTL
+#
+# Copyright (C) 2005 Steven J. Hill <sjhill@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 000000000..34e54e4d3
--- /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 000000000..11a043b23
--- /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 000000000..f53ad112e
--- /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@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 000000000..7a5e630b8
--- /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 000000000..25f5421a2
--- /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 000000000..51625e4e6
--- /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 000000000..cbf0ae42c
--- /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 000000000..63dd11398
--- /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 */