This is the mail archive of the libc-alpha@sourceware.org mailing list for the glibc project.
Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]
[PATCH 02/19] PowerPC: multiarch memcpy for PowerPC32

From: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
To: "GNU C. Library" <libc-alpha at sourceware dot org>
Date: Thu, 31 Oct 2013 10:11:30 -0200
Subject: [PATCH 02/19] PowerPC: multiarch memcpy for PowerPC32
Authentication-results: sourceware.org; auth=none
References: <52724052 dot 3070609 at linux dot vnet dot ibm dot com>
2013-10-30  Adhemerval Zanella  <azanella@linux.vnet.ibm.com>

	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-a2.S: New file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-cell.S: New file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power6.S: New
	file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power7.S: New
	file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S: New
	file.
	* sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c: New file:
	multiarch memcpy for PPC32.
	* sysdeps/powerpc/powerpc32/power4/multiarch/Makefile: Add memcpy
	multiarch objects.
	* sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
	(__libc_ifunc_impl_list): Likewise.

--

diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
index af8d496..79ef7c7 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/Makefile
@@ -1,3 +1,4 @@
 ifeq ($(subdir),string)
-sysdep_routines +=
+sysdep_routines += memcpy-power7 memcpy-a2 memcpy-power6 memcpy-cell \
+		   memcpy-ppc32
 endif
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
index f4e55ae..470439f 100644
--- a/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/ifunc-impl-list.c
@@ -46,5 +46,19 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
   else if (hwcap & PPC_FEATURE_POWER5)
     hwcap |= PPC_FEATURE_POWER4;
 
+#ifdef SHARED
+  /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c.  */
+  IFUNC_IMPL (i, name, memcpy,
+	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,
+			      __memcpy_power7)
+	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,
+			      __memcpy_a2)
+	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,
+			      __memcpy_power6)
+	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,
+			      __memcpy_cell)
+	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))
+#endif
+
   return i;
 }
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-a2.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-a2.S
new file mode 100644
index 0000000..d5970ad
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-a2.S
@@ -0,0 +1,38 @@
+/* Optimized memcpy implementation for PowerPC A2.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)				\
+ .globl C_SYMBOL_NAME(__memcpy_a2);				\
+ .type C_SYMBOL_NAME(__memcpy_a2),@function;			\
+ .align ALIGNARG(alignt);					\
+ EALIGN_W_##words;						\
+ C_LABEL(__memcpy_a2)						\
+ cfi_startproc;
+
+#undef END
+#define END(name)						\
+ cfi_endproc;							\
+ ASM_SIZE_DIRECTIVE(__memcpy_a2)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc32/a2/memcpy.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-cell.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-cell.S
new file mode 100644
index 0000000..9177d25
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-cell.S
@@ -0,0 +1,38 @@
+/* Optimized memcpy implementation for CELL BE PowerPC.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)				\
+ .globl C_SYMBOL_NAME(__memcpy_cell);				\
+ .type C_SYMBOL_NAME(__memcpy_cell),@function;			\
+ .align ALIGNARG(alignt);					\
+ EALIGN_W_##words;						\
+ C_LABEL(__memcpy_cell)						\
+ cfi_startproc;
+
+#undef END
+#define END(name)						\
+ cfi_endproc;							\
+ ASM_SIZE_DIRECTIVE(__memcpy_cell)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc32/cell/memcpy.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power6.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power6.S
new file mode 100644
index 0000000..a5b243c
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power6.S
@@ -0,0 +1,38 @@
+/* Optimized memcpy implementation for PowerPC32 on POWER6.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)				\
+ .globl C_SYMBOL_NAME(__memcpy_power6);				\
+ .type C_SYMBOL_NAME(__memcpy_power6),@function;		\
+ .align ALIGNARG(alignt);					\
+ EALIGN_W_##words;						\
+ C_LABEL(__memcpy_power6)					\
+ cfi_startproc;
+
+#undef END
+#define END(name)						\
+ cfi_endproc;							\
+ ASM_SIZE_DIRECTIVE(__memcpy_power6)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc32/power6/memcpy.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power7.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power7.S
new file mode 100644
index 0000000..3605116
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-power7.S
@@ -0,0 +1,38 @@
+/* Optimized memcpy implementation for PowerPC32/POWER7.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#undef EALIGN
+#define EALIGN(name, alignt, words)				\
+ .globl C_SYMBOL_NAME(__memcpy_power7);				\
+ .type C_SYMBOL_NAME(__memcpy_power7),@function;		\
+ .align ALIGNARG(alignt);					\
+ EALIGN_W_##words;						\
+ C_LABEL(__memcpy_power7)					\
+ cfi_startproc;
+
+#undef END
+#define END(name)						\
+ cfi_endproc;							\
+ ASM_SIZE_DIRECTIVE(__memcpy_power7)
+
+#undef libc_hidden_builtin_def
+#define libc_hidden_builtin_def(name)
+
+#include <sysdeps/powerpc/powerpc32/power7/memcpy.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S
new file mode 100644
index 0000000..8fe1121
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy-ppc32.S
@@ -0,0 +1,41 @@
+/* Default memcpy implementation for PowerPC32.
+   Copyright (C) 2013 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 <sysdep.h>
+
+#if defined SHARED && !defined NOT_IN_libc
+# undef EALIGN
+# define EALIGN(name, alignt, words)				\
+  .globl C_SYMBOL_NAME(__memcpy_ppc);				\
+  .type C_SYMBOL_NAME(__memcpy_ppc),@function;		\
+  .align ALIGNARG(alignt);					\
+  EALIGN_W_##words;						\
+  C_LABEL(__memcpy_ppc)					\
+  cfi_startproc;
+
+# undef END
+# define END(name)						\
+  cfi_endproc;							\
+  ASM_SIZE_DIRECTIVE(__memcpy_ppc)
+
+# undef libc_hidden_builtin_def
+# define libc_hidden_builtin_def(name)				\
+    .globl __GI_memcpy; __GI_memcpy = __memcpy_ppc
+#endif
+
+#include <sysdeps/powerpc/powerpc32/power4/memcpy.S>
diff --git a/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
new file mode 100644
index 0000000..d9c36ad
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c
@@ -0,0 +1,45 @@
+/* Multiple versions of memcpy.
+   Copyright (C) 2013 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/>.  */
+
+/* Define multiple versions only for the definition in lib and for
+   DSO.  In static binaries we need memcpy before the initialization
+   happened.  */
+#if defined SHARED && !defined NOT_IN_libc
+# include <string.h>
+# include <shlib-compat.h>
+# include "init-arch.h"
+
+extern __typeof (memcpy) __memcpy_ppc attribute_hidden;
+extern __typeof (memcpy) __memcpy_cell attribute_hidden;
+extern __typeof (memcpy) __memcpy_power6 attribute_hidden;
+extern __typeof (memcpy) __memcpy_a2 attribute_hidden;
+extern __typeof (memcpy) __memcpy_power7 attribute_hidden;
+
+/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
+   ifunc symbol properly.  */
+libc_ifunc (memcpy,
+            (hwcap & PPC_FEATURE_HAS_VSX)
+            ? __memcpy_power7 :
+	      (hwcap & PPC_FEATURE_ARCH_2_06)
+	      ? __memcpy_a2 :
+		(hwcap & PPC_FEATURE_ARCH_2_05)
+		? __memcpy_power6 :
+		  (hwcap & PPC_FEATURE_CELL_BE)
+		  ? __memcpy_cell
+            : __memcpy_ppc);
+#endif
Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]