* [PATCH] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476
@ 2011-11-21 21:25 Will Schmidt
2012-01-05 15:57 ` [PATCH v2] " Will Schmidt
0 siblings, 1 reply; 4+ messages in thread
From: Will Schmidt @ 2011-11-21 21:25 UTC (permalink / raw)
To: libc-ports; +Cc: willschm
Hi,
This follows changes made in glibc (Subject "simplify code for
accessing the powerpc GOT"), which provides a simplified method
for accessing the powerpc GOT, and a way to override that access for
sub architectures. This code provides a version of SETUP_GOT_ACCESS
that is suitable for the ppc476 architecture, and overrides the
ppc_got() function to match that instruction sequence.
2011-11-21 Will Schmidt <will_schmidt@vnet.ibm.com>
* sysdeps/powerpc/powerpc32/476/dl-machine.h: New file. Add a
ppc_got_476 function.
* sysdeps/powerpc/powerpc32/476/sysdep.h: New file. Define the
SETUP_GOT_ACCESS macro for the 476 architecture.
diff --git a/sysdeps/powerpc/powerpc32/476/dl-machine.h b/sysdeps/powerpc/powerpc32/476/dl-machine.h
new file mode 100644
index 0000000..5470bae
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/476/dl-machine.h
@@ -0,0 +1,45 @@
+/* Machine-dependent ELF dynamic relocation inline functions. PowerPC version.
+ Copyright (C) 1995-2002, 2003, 2005, 2006, 2011
+ 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 <sysdeps/powerpc/powerpc32/dl-machine.h>
+
+#ifndef PPC_GOT_476_OVERRIDE
+#define PPC_GOT_476_OVERRIDE
+
+/* Return the value of the GOT pointer. */
+static inline Elf32_Addr * __attribute__ ((const))
+ppc_got_476 (void)
+{
+ Elf32_Addr *got;
+
+ asm (" bl $+8 \n"
+ "1: \n"
+ " b $+8 \n"
+ " blr \n"
+ " mflr %0 \n"
+ " addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n"
+ " addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n"
+ : "=b" (got) : : "lr");
+
+ return got;
+}
+#define ppc_got() ppc_got_476()
+
+#endif /* PPC_GOT_476_OVERRIDE */
diff --git a/sysdeps/powerpc/powerpc32/476/sysdep.h b/sysdeps/powerpc/powerpc32/476/sysdep.h
new file mode 100644
index 0000000..2240207
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/476/sysdep.h
@@ -0,0 +1,45 @@
+/* Assembly macros for 32-bit PowerPC.
+ Copyright (C) 1999, 2001, 2002, 2003, 2006, 2011
+ 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., 51 Franklin Street, Fifth Floor, Boston MA
+ 02110-1301 USA. */
+
+#include <sysdeps/powerpc/powerpc32/sysdep.h>
+#include <sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+#ifdef __ELF__
+
+/* helper macro for accessing the 32-bit powerpc GOT. */
+#ifndef ACCESS_GOT_476
+#define ACCESS_GOT_476
+
+#undef SETUP_GOT_ACCESS
+
+#define SETUP_GOT_ACCESS(regname) \
+ bl $+8 ; \
+1: ; \
+ b $+8 ; \
+ blr ; \
+ mflr (regname)
+
+#endif /* ACCESS_GOT_476 */
+
+#endif /* __ELF__ */
+
+#endif /* __ASSEMBLER__ */
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476
2011-11-21 21:25 [PATCH] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476 Will Schmidt
@ 2012-01-05 15:57 ` Will Schmidt
2012-06-13 21:41 ` Will Schmidt
0 siblings, 1 reply; 4+ messages in thread
From: Will Schmidt @ 2012-01-05 15:57 UTC (permalink / raw)
To: libc-ports; +Cc: willschm
Hi,
This follows glibc changes (subject:"simplify code for accessing
powerpc GOT", commit 91d2a845) and provides an override for
SETUP_GOT_ACCESS that is suitable for the ppc476 sub-architecture.
2012-01-05 Will Schmidt <will_schmidt@vnet.ibm.com>
* sysdeps/powerpc/powerpc32/476/dl-machine.h: New file. Add a
ppc_got_476 function.
* sysdeps/powerpc/powerpc32/476/sysdep.h: New file. Define the
SETUP_GOT_ACCESS macro for the 476 architecture.
diff --git a/sysdeps/powerpc/powerpc32/476/dl-machine.h b/sysdeps/powerpc/powerpc32/476/dl-machine.h
new file mode 100644
index 0000000..826b205
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/476/dl-machine.h
@@ -0,0 +1,45 @@
+/* Machine-dependent ELF dynamic relocation inline functions. PowerPC version.
+ Copyright (C) 1995-2002, 2003, 2005, 2006, 2011, 2012
+ 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 <sysdeps/powerpc/powerpc32/dl-machine.h>
+
+#ifndef PPC_GOT_476_OVERRIDE
+#define PPC_GOT_476_OVERRIDE
+
+/* Return the value of the GOT pointer. */
+static inline Elf32_Addr * __attribute__ ((const))
+ppc_got_476 (void)
+{
+ Elf32_Addr *got;
+
+ asm (" bl $+8 \n"
+ "1: \n"
+ " b $+8 \n"
+ " blr \n"
+ " mflr %0 \n"
+ " addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n"
+ " addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n"
+ : "=b" (got) : : "lr");
+
+ return got;
+}
+#define ppc_got() ppc_got_476()
+
+#endif /* PPC_GOT_476_OVERRIDE */
diff --git a/sysdeps/powerpc/powerpc32/476/sysdep.h b/sysdeps/powerpc/powerpc32/476/sysdep.h
new file mode 100644
index 0000000..6f9f2e0
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/476/sysdep.h
@@ -0,0 +1,45 @@
+/* Assembly macros for 32-bit PowerPC.
+ Copyright (C) 1999, 2001, 2002, 2003, 2006, 2011, 2012
+ 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., 51 Franklin Street, Fifth Floor, Boston MA
+ 02110-1301 USA. */
+
+#include <sysdeps/powerpc/powerpc32/sysdep.h>
+#include <sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+#ifdef __ELF__
+
+/* helper macro for accessing the 32-bit powerpc GOT. */
+#ifndef ACCESS_GOT_476
+#define ACCESS_GOT_476
+
+#undef SETUP_GOT_ACCESS
+
+#define SETUP_GOT_ACCESS(regname,GOT_LABEL) \
+ bl $+8 ; \
+GOT_LABEL: ; \
+ b $+8 ; \
+ blr ; \
+ mflr (regname)
+
+#endif /* ACCESS_GOT_476 */
+
+#endif /* __ELF__ */
+
+#endif /* __ASSEMBLER__ */
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476
2012-01-05 15:57 ` [PATCH v2] " Will Schmidt
@ 2012-06-13 21:41 ` Will Schmidt
2012-06-15 13:46 ` Ryan S. Arnold
0 siblings, 1 reply; 4+ messages in thread
From: Will Schmidt @ 2012-06-13 21:41 UTC (permalink / raw)
To: libc-ports; +Cc: willschm, ryan.arnold, bergner
Looks like this one fell off everyones radar. Ryan, can you commit
this as-is, or do you want a re-spin to fold in the copyright years,
etc?
Thanks,
-Will
On Thu, 2012-01-05 at 09:57 -0600, Will Schmidt wrote:
> Hi,
> This follows glibc changes (subject:"simplify code for accessing
> powerpc GOT", commit 91d2a845) and provides an override for
> SETUP_GOT_ACCESS that is suitable for the ppc476 sub-architecture.
>
> 2012-01-05 Will Schmidt <will_schmidt@vnet.ibm.com>
>
> * sysdeps/powerpc/powerpc32/476/dl-machine.h: New file. Add a
> ppc_got_476 function.
> * sysdeps/powerpc/powerpc32/476/sysdep.h: New file. Define the
> SETUP_GOT_ACCESS macro for the 476 architecture.
>
> diff --git a/sysdeps/powerpc/powerpc32/476/dl-machine.h b/sysdeps/powerpc/powerpc32/476/dl-machine.h
> new file mode 100644
> index 0000000..826b205
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/476/dl-machine.h
> @@ -0,0 +1,45 @@
> +/* Machine-dependent ELF dynamic relocation inline functions. PowerPC version.
> + Copyright (C) 1995-2002, 2003, 2005, 2006, 2011, 2012
> + 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 <sysdeps/powerpc/powerpc32/dl-machine.h>
> +
> +#ifndef PPC_GOT_476_OVERRIDE
> +#define PPC_GOT_476_OVERRIDE
> +
> +/* Return the value of the GOT pointer. */
> +static inline Elf32_Addr * __attribute__ ((const))
> +ppc_got_476 (void)
> +{
> + Elf32_Addr *got;
> +
> + asm (" bl $+8 \n"
> + "1: \n"
> + " b $+8 \n"
> + " blr \n"
> + " mflr %0 \n"
> + " addis %0,%0,_GLOBAL_OFFSET_TABLE_-1b@ha\n"
> + " addi %0,%0,_GLOBAL_OFFSET_TABLE_-1b@l\n"
> + : "=b" (got) : : "lr");
> +
> + return got;
> +}
> +#define ppc_got() ppc_got_476()
> +
> +#endif /* PPC_GOT_476_OVERRIDE */
> diff --git a/sysdeps/powerpc/powerpc32/476/sysdep.h b/sysdeps/powerpc/powerpc32/476/sysdep.h
> new file mode 100644
> index 0000000..6f9f2e0
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/476/sysdep.h
> @@ -0,0 +1,45 @@
> +/* Assembly macros for 32-bit PowerPC.
> + Copyright (C) 1999, 2001, 2002, 2003, 2006, 2011, 2012
> + 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., 51 Franklin Street, Fifth Floor, Boston MA
> + 02110-1301 USA. */
> +
> +#include <sysdeps/powerpc/powerpc32/sysdep.h>
> +#include <sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h>
> +
> +#ifdef __ASSEMBLER__
> +
> +#ifdef __ELF__
> +
> +/* helper macro for accessing the 32-bit powerpc GOT. */
> +#ifndef ACCESS_GOT_476
> +#define ACCESS_GOT_476
> +
> +#undef SETUP_GOT_ACCESS
> +
> +#define SETUP_GOT_ACCESS(regname,GOT_LABEL) \
> + bl $+8 ; \
> +GOT_LABEL: ; \
> + b $+8 ; \
> + blr ; \
> + mflr (regname)
> +
> +#endif /* ACCESS_GOT_476 */
> +
> +#endif /* __ELF__ */
> +
> +#endif /* __ASSEMBLER__ */
>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v2] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476
2012-06-13 21:41 ` Will Schmidt
@ 2012-06-15 13:46 ` Ryan S. Arnold
0 siblings, 0 replies; 4+ messages in thread
From: Ryan S. Arnold @ 2012-06-15 13:46 UTC (permalink / raw)
To: will_schmidt; +Cc: libc-ports, willschm, bergner
On Wed, Jun 13, 2012 at 4:40 PM, Will Schmidt <will_schmidt@vnet.ibm.com> wrote:
>
> Looks like this one fell off everyones radar. Ryan, can you commit
> this as-is, or do you want a re-spin to fold in the copyright years,
> etc?
>
> Thanks,
> -Will
Hi Will,
Yeah, this one totally slipped through. I'll fold the copyright years
myself and check it in.
Ryan
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-11-21 21:25 [PATCH] Powerpc: Use and override SETUP_GOT_ACCESS for ppc476 Will Schmidt
2012-01-05 15:57 ` [PATCH v2] " Will Schmidt
2012-06-13 21:41 ` Will Schmidt
2012-06-15 13:46 ` Ryan S. Arnold
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