* configure.tgt (target_cpu): Handle sparc and sparc64 & sparcv9.

	* config/sparc/cacheline.h: New file.
	* config/sparc/target.h: Likewise.
	* config/sparc/sjlj.S: Likewise.
	* config/linux/sparc/futex_bits.h: Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184177 138bc75d-0d04-0410-961f-82ee72b054a4

6 files changed, 282 insertions, 1 deletions

diff --git a/libitm/ChangeLog b/libitm/ChangeLog
index 9ce9ba71a9a2..ad8e3d73a8f8 100644
--- a/libitm/ChangeLog
+++ b/libitm/ChangeLog
@@ -1,4 +1,12 @@
-2012-02-11  Eric Botcazou  <ebotcazou@adacore.com>
+2012-02-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* configure.tgt (target_cpu): Handle sparc and sparc64 & sparcv9.
+	* config/sparc/cacheline.h: New file.
+	* config/sparc/target.h: Likewise.
+	* config/sparc/sjlj.S: Likewise.
+	* config/linux/sparc/futex_bits.h: Likewise.
+
+2012-02-13  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* configure.ac (link_itm): Fix comment.
 	* configure: Regenerate.
diff --git a/libitm/config/linux/sparc/futex_bits.h b/libitm/config/linux/sparc/futex_bits.h
new file mode 100644
index 000000000000..5881de4fceaf
--- /dev/null
+++ b/libitm/config/linux/sparc/futex_bits.h
@@ -0,0 +1,62 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm 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 of the License, or
+   (at your option) any later version.
+
+   Libitm 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/>.  */
+
+#include <sys/syscall.h>
+
+static inline long
+sys_futex0 (std::atomic<int> *addr, int op, int val)
+{
+  register long int g1 __asm__ ("g1");
+  register long int o0 __asm__ ("o0");
+  register long int o1 __asm__ ("o1");
+  register long int o2 __asm__ ("o2");
+  register long int o3 __asm__ ("o3");
+  long res;
+
+  g1 = SYS_futex;
+  o0 = (long) addr;
+  o1 = op;
+  o2 = val;
+  o3 = 0;
+
+#ifdef __arch64__
+  __asm volatile ("ta 0x6d"
+#else
+  __asm volatile ("ta 0x10"
+#endif
+		  : "=r"(g1), "=r"(o0)
+		  : "0"(g1), "1"(o0), "r"(o1), "r"(o2), "r"(o3)
+		  : "g2", "g3", "g4", "g5", "g6",
+		    "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+		    "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+		    "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+		    "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+		    "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",
+		    "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",
+		    "cc", "memory");
+
+  res = o0;
+  if (__builtin_expect ((unsigned long) res >= -515UL, 0))
+    res =- res;
+  return res;
+}
diff --git a/libitm/config/sparc/cacheline.h b/libitm/config/sparc/cacheline.h
new file mode 100644
index 000000000000..e5aa773d90c3
--- /dev/null
+++ b/libitm/config/sparc/cacheline.h
@@ -0,0 +1,41 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm 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 of the License, or
+   (at your option) any later version.
+
+   Libitm 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/>.  */
+
+#ifndef LIBITM_SPARC_CACHELINE_H
+#define LIBITM_SPARC_CACHELINE_H 1
+
+// A cacheline is the smallest unit with which locks are associated.
+// The current implementation of the _ITM_[RW] barriers assumes that
+// all data types can fit (aligned) within a cachline, which means
+// in practice sizeof(complex long double) is the smallest cacheline size.
+// It ought to be small enough for efficient manipulation of the
+// modification mask, below.
+#ifdef __arch64__
+# define CACHELINE_SIZE 64
+#else
+# define CACHELINE_SIZE 32
+#endif
+
+#include "config/generic/cacheline.h"
+
+#endif // LIBITM_SPARC_CACHELINE_H
diff --git a/libitm/config/sparc/sjlj.S b/libitm/config/sparc/sjlj.S
new file mode 100644
index 000000000000..a42040fe822d
--- /dev/null
+++ b/libitm/config/sparc/sjlj.S
@@ -0,0 +1,96 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm 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 of the License, or
+   (at your option) any later version.
+
+   Libitm 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/>.  */
+
+#include "asmcfi.h"
+
+#ifdef __arch64__
+# define WORD_SIZE 8
+# define MIN_FRAME_SIZE 176
+# define STACK_BIAS 2047
+# define load  ldx
+# define store stx
+#else
+# define WORD_SIZE 4
+# define MIN_FRAME_SIZE 96
+# define STACK_BIAS 0
+# define load  ld
+# define store st
+#endif
+
+/* Fields of the JmpBuf structure.  */
+#define JB_CFA 0
+#define JB_PC  1
+#define OFFSET(FIELD) ((FIELD) * WORD_SIZE)
+
+/* The frame size must be a multiple of the double-word size.  */
+#define FRAME_SIZE (MIN_FRAME_SIZE + 2 * WORD_SIZE)
+#define JB_OFFSET  (STACK_BIAS + MIN_FRAME_SIZE)
+
+	.text
+	.align 4
+	.globl	_ITM_beginTransaction
+	.type	_ITM_beginTransaction, #function
+	.proc	016
+_ITM_beginTransaction:
+	cfi_startproc
+	add	%sp, STACK_BIAS, %g1
+	sub	%sp, FRAME_SIZE, %sp
+	cfi_def_cfa_offset(STACK_BIAS + FRAME_SIZE)
+	store	%g1, [%sp + JB_OFFSET + OFFSET (JB_CFA)]
+	store	%o7, [%sp + JB_OFFSET + OFFSET (JB_PC)]
+	/* ??? This triggers an internal error in GDB.  */
+	cfi_offset(%o7, -WORD_SIZE)
+	call	GTM_begin_transaction
+	 add	%sp, JB_OFFSET, %o1
+	load	[%sp + JB_OFFSET + OFFSET (JB_PC)], %o7
+	jmp	%o7+8
+	 add	%sp, FRAME_SIZE, %sp
+	cfi_def_cfa_offset(STACK_BIAS)
+	cfi_endproc
+	.size _ITM_beginTransaction, . - _ITM_beginTransaction
+
+	.align 4
+	.globl	GTM_longjmp
+#ifdef HAVE_ATTRIBUTE_VISIBILITY
+	.hidden	GTM_longjmp
+#endif
+	.type	GTM_longjmp, #function
+	.proc	016
+GTM_longjmp:
+	cfi_startproc
+	flushw
+	load	[%o1 + OFFSET (JB_CFA)], %fp
+	cfi_def_cfa(%fp, 0)
+#if STACK_BIAS
+	sub	%fp, STACK_BIAS, %fp
+	cfi_def_cfa_offset(STACK_BIAS)
+#endif
+	load	[%o1 + OFFSET (JB_PC)], %o7
+	jmp	%o7+8
+	 restore %g0, %o0, %o0
+	cfi_endproc
+	.size GTM_longjmp, . - GTM_longjmp
+
+#ifdef __linux__
+	.section .note.GNU-stack, "", @progbits
+#endif
diff --git a/libitm/config/sparc/target.h b/libitm/config/sparc/target.h
new file mode 100644
index 000000000000..8f5b6aa98d0e
--- /dev/null
+++ b/libitm/config/sparc/target.h
@@ -0,0 +1,46 @@
+/* Copyright (C) 2012 Free Software Foundation, Inc.
+
+   This file is part of the GNU Transactional Memory Library (libitm).
+
+   Libitm 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 of the License, or
+   (at your option) any later version.
+
+   Libitm 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/>.  */
+
+namespace GTM HIDDEN {
+
+typedef struct gtm_jmpbuf
+{
+  void *cfa;
+  unsigned long pc;
+} gtm_jmpbuf;
+
+/* UltraSPARC processors generally use a fixed page size of 8K.  */
+#define PAGE_SIZE	8192
+#define FIXED_PAGE_SIZE	1
+
+/* The size of one line in hardware caches (in bytes).  We use the primary
+   cache line size documented for the UltraSPARC T1/T2.  */
+#define HW_CACHELINE_SIZE 16
+
+static inline void
+cpu_relax (void)
+{
+  __asm volatile ("" : : : "memory");
+}
+
+} // namespace GTM
diff --git a/libitm/configure.tgt b/libitm/configure.tgt
index e20349a1f848..b68c86b05f41 100644
--- a/libitm/configure.tgt
+++ b/libitm/configure.tgt
@@ -66,6 +66,34 @@ case "${target_cpu}" in
 
   sh*)		ARCH=sh ;;
 
+  sparc)
+	case " ${CC} ${CFLAGS} " in
+	  *" -m64 "*)
+	    ;;
+	  *)
+	    if test -z "$with_cpu"; then
+	      XCFLAGS="${XCFLAGS} -mcpu=v9"
+	    fi
+	esac
+	ARCH=sparc
+	;;
+
+  sparc64|sparcv9)
+	case " ${CC} ${CFLAGS} " in
+	  *" -m32 "*)
+	    XCFLAGS="${XCFLAGS} -mcpu=v9"
+	    ;;
+	  *" -m64 "*)
+	    ;;
+	  *)
+	    if test "x$with_cpu" = xv8; then
+	      XCFLAGS="${XCFLAGS} -mcpu=v9"
+	    fi
+	    ;;
+	esac
+	ARCH=sparc
+	;;
+
   x86_64)
 	case " ${CC} ${CFLAGS} " in
 	  *" -m32 "*)