Re: [PATCH] powerpc: 405/440/464/476 support and optimizations

[Luis Machado <luisgpm@linux.vnet.ibm.com>]

Ping?

On Fri, 2010-09-03 at 12:00 -0300, Luis Machado wrote:
> > Since Todd doesn't have copyright assignment these changes are
> > contributed to the FSF by IBM without author/contributor attribution.
> > 
> > You can simply attribute the changes to him in the email leaving his
> > name out of the sources per FSF policy and submit them on IBM's
> > behalf.
> > 
> > Ryan
> 
> Thanks.
> 
> Follows the updated patch without Todd's name on the sources.
> 
> Luis
> 
> 
> 2010-09-03  Luis Machado  <luisgpm@br.ibm.com>
> 
> 	* sysdeps/powerpc/dl-procinfo.c: New file.
> 	* sysdeps/powerpc/dl-procinfo.h: New file.
> 	* sysdeps/powerpc/powerpc32/405/memcmp.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/memcpy.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/memset.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/strcmp.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/strcpy.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/strlen.S: New file.
> 	* sysdeps/powerpc/powerpc32/405/strncmp.S: New file.
> 	* sysdeps/powerpc/powerpc32/440/Implies: New file.
> 	* sysdeps/powerpc/powerpc32/464/Implies: New file.
> 	* sysdeps/powerpc/powerpc32/476/Implies: New file.
> 	* sysdeps/powerpc/powerpc32/Makefile: New file.
> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/405/Implies: New file.
> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/440/Implies: New file.
> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/464/Implies: New file.
> 	* sysdeps/unix/sysv/linux/powerpc/powerpc32/476/Implies: New file.
> 
> diff --git a/sysdeps/powerpc/dl-procinfo.c b/sysdeps/powerpc/dl-procinfo.c
> new file mode 100644
> index 0000000..60fb465
> --- /dev/null
> +++ b/sysdeps/powerpc/dl-procinfo.c
> @@ -0,0 +1,96 @@
> +/* Data for processor capability information.  PowerPC version.
> +   Copyright (C) 2005, 2006, 2008 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.  */
> +
> +/* This information must be kept in sync with the _DL_HWCAP_COUNT and
> +   _DL_PLATFORM_COUNT definitions in procinfo.h.
> +
> +   If anything should be added here check whether the size of each string
> +   is still ok with the given array size.
> +
> +   All the #ifdefs in the definitions are quite irritating but
> +   necessary if we want to avoid duplicating the information.  There
> +   are three different modes:
> +
> +   - PROCINFO_DECL is defined.  This means we are only interested in
> +     declarations.
> +
> +   - PROCINFO_DECL is not defined:
> +
> +     + if SHARED is defined the file is included in an array
> +       initializer.  The .element = { ... } syntax is needed.
> +
> +     + if SHARED is not defined a normal array initialization is
> +       needed.
> +  */
> +
> +#ifndef PROCINFO_CLASS
> +# define PROCINFO_CLASS
> +#endif
> +
> +#if !defined PROCINFO_DECL && defined SHARED
> +  ._dl_powerpc_cap_flags
> +#else
> +PROCINFO_CLASS const char _dl_powerpc_cap_flags[25][10]
> +#endif
> +#ifndef PROCINFO_DECL
> += {
> +    "vsx",
> +    "arch_2_06", "power6x", "dfp", "pa6t",
> +    "arch_2_05", "ic_snoop", "smt", "booke",
> +    "cellbe", "power5+", "power5", "power4",
> +    "notb", "efpdouble", "efpsingle", "spe",
> +    "ucache", "4xxmac", "mmu", "fpu",
> +    "altivec", "ppc601", "ppc64", "ppc32",
> +  }
> +#endif
> +#if !defined SHARED || defined PROCINFO_DECL
> +;
> +#else
> +,
> +#endif
> +
> +#if !defined PROCINFO_DECL && defined SHARED
> +  ._dl_powerpc_platforms
> +#else
> +PROCINFO_CLASS const char _dl_powerpc_platforms[12][12]
> +#endif
> +#ifndef PROCINFO_DECL
> += {
> +    [PPC_PLATFORM_POWER4] = "power4",
> +    [PPC_PLATFORM_PPC970] = "ppc970",
> +    [PPC_PLATFORM_POWER5] = "power5",
> +    [PPC_PLATFORM_POWER5_PLUS] = "power5+",
> +    [PPC_PLATFORM_POWER6] = "power6",
> +    [PPC_PLATFORM_CELL_BE] = "ppc-cell-be",
> +    [PPC_PLATFORM_POWER6X] = "power6x",
> +    [PPC_PLATFORM_POWER7] = "power7",
> +    [PPC_PLATFORM_PPC405] = "ppc405",
> +    [PPC_PLATFORM_PPC440] = "ppc440",
> +    [PPC_PLATFORM_PPC464] = "ppc464",
> +    [PPC_PLATFORM_PPC476] = "ppc476"
> +  }
> +#endif
> +#if !defined SHARED || defined PROCINFO_DECL
> +;
> +#else
> +,
> +#endif
> +
> +#undef PROCINFO_DECL
> +#undef PROCINFO_CLASS
> diff --git a/sysdeps/powerpc/dl-procinfo.h b/sysdeps/powerpc/dl-procinfo.h
> new file mode 100644
> index 0000000..87279de
> --- /dev/null
> +++ b/sysdeps/powerpc/dl-procinfo.h
> @@ -0,0 +1,168 @@
> +/* Processor capability information handling macros.  PowerPC version.
> +   Copyright (C) 2005, 2006, 2008 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 _DL_PROCINFO_H
> +#define _DL_PROCINFO_H	1
> +
> +#include <ldsodefs.h>
> +#include <sysdep.h>		/* This defines the PPC_FEATURE_* macros.  */
> +
> +/* There are 25 bits used, but they are bits 7..31.  */
> +#define _DL_HWCAP_FIRST		7
> +#define _DL_HWCAP_COUNT		32
> +
> +/* These bits influence library search.  */
> +#define HWCAP_IMPORTANT		(PPC_FEATURE_HAS_ALTIVEC \
> +				+ PPC_FEATURE_HAS_DFP)
> +
> +#define _DL_PLATFORMS_COUNT	12
> +
> +#define _DL_FIRST_PLATFORM	32
> +/* Mask to filter out platforms.  */
> +#define _DL_HWCAP_PLATFORM      (((1ULL << _DL_PLATFORMS_COUNT) - 1) \
> +				<< _DL_FIRST_PLATFORM)
> +
> +/* Platform bits (relative to _DL_FIRST_PLATFORM).  */
> +#define PPC_PLATFORM_POWER4	      0
> +#define PPC_PLATFORM_PPC970	      1
> +#define PPC_PLATFORM_POWER5	      2
> +#define PPC_PLATFORM_POWER5_PLUS      3
> +#define PPC_PLATFORM_POWER6	      4
> +#define PPC_PLATFORM_CELL_BE	      5
> +#define PPC_PLATFORM_POWER6X	      6
> +#define PPC_PLATFORM_POWER7	      7
> +#define PPC_PLATFORM_PPC405	      8
> +#define PPC_PLATFORM_PPC440	      9
> +#define PPC_PLATFORM_PPC464	      10
> +#define PPC_PLATFORM_PPC476	      11
> +
> +static inline const char *
> +__attribute__ ((unused))
> +_dl_hwcap_string (int idx)
> +{
> +  return GLRO(dl_powerpc_cap_flags)[idx - _DL_HWCAP_FIRST];
> +}
> +
> +static inline const char *
> +__attribute__ ((unused))
> +_dl_platform_string (int idx)
> +{
> +  return GLRO(dl_powerpc_platforms)[idx - _DL_FIRST_PLATFORM];
> +}
> +
> +static inline int
> +__attribute__ ((unused))
> +_dl_string_hwcap (const char *str)
> +{
> +  for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
> +    if (strcmp (str, _dl_hwcap_string (i)) == 0)
> +      return i;
> +  return -1;
> +}
> +
> +static inline int
> +__attribute__ ((unused, always_inline))
> +_dl_string_platform (const char *str)
> +{
> +  if (str == NULL)
> +    return -1;
> +
> +  if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_POWER4], 5) == 0)
> +    {
> +      int ret;
> +      str += 5;
> +      switch (*str)
> +	{
> +	case '4':
> +	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER4;
> +	  break;
> +	case '5':
> +	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5;
> +	  if (str[1] == '+')
> +	    {
> +	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER5_PLUS;
> +	      ++str;
> +	    }
> +	  break;
> +	case '6':
> +	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6;
> +	  if (str[1] == 'x')
> +	    {
> +	      ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER6X;
> +	      ++str;
> +	    }
> +	  break;
> +	case '7':
> +	  ret = _DL_FIRST_PLATFORM + PPC_PLATFORM_POWER7;
> +	  break;
> +	default:
> +	  return -1;
> +	}
> +      if (str[1] == '\0')
> +	return ret;
> +    }
> +  else if (strncmp (str, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970],
> +		    3) == 0)
> +    {
> +      if (strcmp (str + 3, GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC970]
> +			   + 3) == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC970;
> +      else if (strcmp (str + 3,
> +		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_CELL_BE] + 3)
> +	       == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_CELL_BE;
> +      else if (strcmp (str + 3,
> +		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC405] + 3)
> +	       == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC405;
> +      else if (strcmp (str + 3,
> +		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC440] + 3)
> +	       == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC440;
> +      else if (strcmp (str + 3,
> +		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC464] + 3)
> +	       == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC464;
> +      else if (strcmp (str + 3,
> +		       GLRO(dl_powerpc_platforms)[PPC_PLATFORM_PPC476] + 3)
> +	       == 0)
> +	return _DL_FIRST_PLATFORM + PPC_PLATFORM_PPC476;
> +    }
> +
> +  return -1;
> +}
> +
> +#ifdef IS_IN_rtld
> +static inline int
> +__attribute__ ((unused))
> +_dl_procinfo (int word)
> +{
> +  _dl_printf ("AT_HWCAP:       ");
> +
> +  for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
> +    if (word & (1 << i))
> +      _dl_printf (" %s", _dl_hwcap_string (i));
> +
> +  _dl_printf ("\n");
> +
> +  return 0;
> +}
> +#endif
> +
> +#endif /* dl-procinfo.h */
> diff --git a/sysdeps/powerpc/powerpc32/405/memcmp.S b/sysdeps/powerpc/powerpc32/405/memcmp.S
> new file mode 100644
> index 0000000..653d3b5
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/memcmp.S
> @@ -0,0 +1,131 @@
> +/* Optimized memcmp implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* memcmp
> +
> +	r3:source1 address, return equality
> +	r4:source2 address
> +	r5:byte count
> +
> +	Check 2 words from src1 and src2. If unequal jump to end and
> +	return src1 > src2 or src1 < src2.
> +	If count = zero check bytes before zero counter and then jump to end and
> +	return src1 > src2, src1 < src2 or src1 = src2.
> +	If src1 = src2 and no null, repeat. */
> +
> +EALIGN (BP_SYM (memcmp), 5, 0)
> +	srwi.	r6,r5,5
> +	beq	L(preword2_count_loop)
> +	mtctr	r6
> +	clrlwi	r5,r5,27
> +
> +L(word8_compare_loop):
> +	lwz	r10,0(r3)
> +	lwz	r6,4(r3)
> +	lwz	r8,0(r4)
> +	lwz	r9,4(r4)
> +	cmplw	cr5,r8,r10
> +	cmplw	cr1,r9,r6
> +	bne	cr5,L(st2)
> +	bne	cr1,L(st1)
> +	lwz	r10,8(r3)
> +	lwz	r6,12(r3)
> +	lwz	r8,8(r4)
> +	lwz	r9,12(r4)
> +	cmplw	cr5,r8,r10
> +	cmplw	cr1,r9,r6
> +	bne	cr5,L(st2)
> +	bne	cr1,L(st1)
> +	lwz	r10,16(r3)
> +	lwz	r6,20(r3)
> +	lwz	r8,16(r4)
> +	lwz	r9,20(r4)
> +	cmplw	cr5,r8,r10
> +	cmplw	cr1,r9,r6
> +	bne	cr5,L(st2)
> +	bne	cr1,L(st1)
> +	lwz	r10,24(r3)
> +	lwz	r6,28(r3)
> +	addi	r3,r3,0x20
> +	lwz	r8,24(r4)
> +	lwz	r9,28(r4)
> +	addi	r4,r4,0x20
> +	cmplw	cr5,r8,r10
> +	cmplw	cr1,r9,r6
> +	bne	cr5,L(st2)
> +	bne	cr1,L(st1)
> +	bdnz	L(word8_compare_loop)
> +
> +L(preword2_count_loop):
> +	srwi.	r6,r5,3
> +	beq	L(prebyte_count_loop)
> +	mtctr	r6
> +	clrlwi  r5,r5,29
> +
> +L(word2_count_loop):
> +	lwz	r10,0(r3)
> +	lwz	r6,4(r3)
> +	addi	r3,r3,0x08
> +	lwz	r8,0(r4)
> +	lwz	r9,4(r4)
> +	addi	r4,r4,0x08
> +	cmplw	cr5,r8,r10
> +	cmplw	cr1,r9,r6
> +	bne	cr5,L(st2)
> +	bne	cr1,L(st1)
> +	bdnz	L(word2_count_loop)
> +
> +L(prebyte_count_loop):
> +	addi	r5,r5,1
> +	mtctr	r5
> +	bdz	L(end_memcmp)
> +
> +L(byte_count_loop):
> +	lbz	r6,0(r3)
> +	addi	r3,r3,0x01
> +	lbz	r8,0(r4)
> +	addi	r4,r4,0x01
> +	cmplw	cr5,r8,r6
> +	bne	cr5,L(st2)
> +	bdnz	L(byte_count_loop)
> +
> +L(end_memcmp):
> +	addi	r3,r0,0
> +	blr
> +
> +L(l_r):
> +	addi	r3,r0,1
> +	blr
> +
> +L(st1):
> +	blt	cr1,L(l_r)
> +	addi	r3,r0,-1
> +	blr
> +
> +L(st2):
> +	blt	cr5,L(l_r)
> +	addi	r3,r0,-1
> +	blr
> +END (BP_SYM (memcmp))
> +libc_hidden_builtin_def (memcmp)
> +weak_alias (memcmp,bcmp)
> diff --git a/sysdeps/powerpc/powerpc32/405/memcpy.S b/sysdeps/powerpc/powerpc32/405/memcpy.S
> new file mode 100644
> index 0000000..a654c73
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/memcpy.S
> @@ -0,0 +1,133 @@
> +/* Optimized memcpy implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* memcpy
> +
> +	r0:return address
> +	r3:destination address
> +	r4:source address
> +	r5:byte count
> +
> +	Save return address in r0.
> +	If destinationn and source are unaligned and copy count is greater than 256
> +	then copy 0-3 bytes to make destination aligned.
> +	If 32 or more bytes to copy we use 32 byte copy loop.
> +	Finaly we copy 0-31 extra bytes. */
> +
> +EALIGN (BP_SYM (memcpy), 5, 0)
> +/* Check if bytes to copy are greater than 256 and if
> +	source and destination are unaligned */
> +	cmpwi	r5,0x0100
> +	addi	r0,r3,0
> +	ble	L(string_count_loop)
> +	neg	r6,r3
> +	clrlwi. r6,r6,30
> +	beq	L(string_count_loop)
> +	neg	r6,r4
> +	clrlwi. r6,r6,30
> +	beq	L(string_count_loop)
> +	mtctr	r6
> +	subf	r5,r6,r5
> +
> +L(unaligned_bytecopy_loop): /* Align destination by coping 0-3 bytes */
> +	lbz	r8,0x0(r4)
> +	addi	r4,r4,1
> +	stb	r8,0x0(r3)
> +	addi	r3,r3,1
> +	bdnz	L(unaligned_bytecopy_loop)
> +	srwi.	r7,r5,5
> +	beq	L(preword2_count_loop)
> +	mtctr	r7
> +
> +L(word8_count_loop_no_dcbt): /* Copy 32 bytes at a time */
> +	lwz	r6,0(r4)
> +	lwz	r7,4(r4)
> +	lwz	r8,8(r4)
> +	lwz	r9,12(r4)
> +	subi	r5,r5,0x20
> +	stw	r6,0(r3)
> +	stw	r7,4(r3)
> +	stw	r8,8(r3)
> +	stw	r9,12(r3)
> +	lwz	r6,16(r4)
> +	lwz	r7,20(r4)
> +	lwz	r8,24(r4)
> +	lwz	r9,28(r4)
> +	addi	r4,r4,0x20
> +	stw	r6,16(r3)
> +	stw	r7,20(r3)
> +	stw	r8,24(r3)
> +	stw	r9,28(r3)
> +	addi	r3,r3,0x20
> +	bdnz	L(word8_count_loop_no_dcbt)
> +
> +L(preword2_count_loop): /* Copy remaining 0-31 bytes */
> +	clrlwi. r12,r5,27
> +	beq	L(end_memcpy)
> +	mtxer	r12
> +	lswx	r5,0,r4
> +	stswx	r5,0,r3
> +	mr	 r3,r0
> +	blr
> +
> +L(string_count_loop): /* Copy odd 0-31 bytes */
> +	clrlwi. r12,r5,28
> +	add	r3,r3,r5
> +	add	r4,r4,r5
> +	beq	L(pre_string_copy)
> +	mtxer	r12
> +	subf	r4,r12,r4
> +	subf	r3,r12,r3
> +	lswx	r6,0,r4
> +	stswx	r6,0,r3
> +
> +L(pre_string_copy): /* Check how many 32 byte chunck to copy */
> +	srwi.	r7,r5,4
> +	beq	L(end_memcpy)
> +	mtctr	r7
> +
> +L(word4_count_loop_no_dcbt): /* Copy 32 bytes at a time */
> +	lwz	r6,-4(r4)
> +	lwz	r7,-8(r4)
> +	lwz	r8,-12(r4)
> +	lwzu	r9,-16(r4)
> +	stw	r6,-4(r3)
> +	stw	r7,-8(r3)
> +	stw	r8,-12(r3)
> +	stwu	r9,-16(r3)
> +	bdz	L(end_memcpy)
> +	lwz	r6,-4(r4)
> +	lwz	r7,-8(r4)
> +	lwz	r8,-12(r4)
> +	lwzu	r9,-16(r4)
> +	stw	r6,-4(r3)
> +	stw	r7,-8(r3)
> +	stw	r8,-12(r3)
> +	stwu	r9,-16(r3)
> +	bdnz	L(word4_count_loop_no_dcbt)
> +
> +L(end_memcpy):
> +	mr	 r3,r0
> +	blr
> +END (BP_SYM (memcpy))
> +libc_hidden_builtin_def (memcpy)
> diff --git a/sysdeps/powerpc/powerpc32/405/memset.S b/sysdeps/powerpc/powerpc32/405/memset.S
> new file mode 100644
> index 0000000..69d5d4c
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/memset.S
> @@ -0,0 +1,155 @@
> +/* Optimized memset implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* memset
> +
> +	r3:destination address and return address
> +	r4:source integer to copy
> +	r5:byte count
> +	r11:sources integer to copy in all 32 bits of reg
> +	r12:temp return address
> +
> +	Save return address in r12
> +	If destinationn is unaligned and count is greater tha 255 bytes
> +	set 0-3 bytes to make destination aligned
> +	If count is greater tha 255 bytes and setting zero to memory
> +	use dbcz to set memeory when we can
> +	otherwsie do the follwoing
> +	If 16 or more words to set we use 16 word copy loop.
> +	Finaly we set 0-15 extra bytes with string store. */
> +
> +EALIGN (BP_SYM (memset), 5, 0)
> +	rlwinm	r11,r4,0,24,31
> +	rlwimi	r11,r4,8,16,23
> +	rlwimi	r11,r11,16,0,15
> +	addi	r12,r3,0
> +	cmpwi	r5,0x00FF
> +	ble	L(preword8_count_loop)
> +	cmpwi	r4,0x00
> +	beq	L(use_dcbz)
> +	neg	r6,r3
> +	clrlwi.	r6,r6,30
> +	beq	L(preword8_count_loop)
> +	addi	r8,0,1
> +	mtctr	r6
> +	subi	r3,r3,1
> +
> +L(unaligned_bytecopy_loop):
> +	stbu	r11,0x1(r3)
> +	subf.	r5,r8,r5
> +	beq	L(end_memset)
> +	bdnz	L(unaligned_bytecopy_loop)
> +	addi	r3,r3,1
> +
> +L(preword8_count_loop):
> +	srwi.	r6,r5,4
> +	beq	L(preword2_count_loop)
> +	mtctr	r6
> +	addi	r3,r3,-4
> +	mr	r8,r11
> +	mr	r9,r11
> +	mr	r10,r11
> +
> +L(word8_count_loop_no_dcbt):
> +	stwu	r8,4(r3)
> +	stwu	r9,4(r3)
> +	subi	r5,r5,0x10
> +	stwu	r10,4(r3)
> +	stwu	r11,4(r3)
> +	bdnz	L(word8_count_loop_no_dcbt)
> +	addi	r3,r3,4
> +
> +L(preword2_count_loop):
> +	clrlwi.	r7,r5,28
> +	beq	L(end_memset)
> +	mr	r8,r11
> +	mr	r9,r11
> +	mr	r10,r11
> +	mtxer	r7
> +	stswx	r8,0,r3
> +
> +L(end_memset):
> +	addi	r3,r12,0
> +	blr
> +
> +L(use_dcbz):
> +	neg	r6,r3
> +	clrlwi.	r7,r6,28
> +	beq	L(skip_string_loop)
> +	mr	r8,r11
> +	mr	r9,r11
> +	mr	r10,r11
> +	subf	r5,r7,r5
> +	mtxer	r7
> +	stswx	r8,0,r3
> +	add	r3,r3,r7
> +
> +L(skip_string_loop):
> +	clrlwi	r8,r6,25
> +	srwi.	r8,r8,4
> +	beq	L(dcbz_pre_loop)
> +	mtctr	r8
> +
> +L(word_loop):
> +	stw	r11,0(r3)
> +	subi	r5,r5,0x10
> +	stw	r11,4(r3)
> +	stw	r11,8(r3)
> +	stw	r11,12(r3)
> +	addi	r3,r3,0x10
> +	bdnz	L(word_loop)
> +
> +L(dcbz_pre_loop):
> +	srwi	r6,r5,7
> +	mtctr	r6
> +	addi	r7,0,0
> +
> +L(dcbz_loop):
> +	dcbz	r3,r7
> +	addi	r3,r3,0x80
> +	subi	r5,r5,0x80
> +	bdnz	L(dcbz_loop)
> +	srwi.	r6,r5,4
> +	beq	L(postword2_count_loop)
> +	mtctr	r6
> +
> +L(postword8_count_loop):
> +	stw	r11,0(r3)
> +	subi	r5,r5,0x10
> +	stw	r11,4(r3)
> +	stw	r11,8(r3)
> +	stw	r11,12(r3)
> +	addi	r3,r3,0x10
> +	bdnz	L(postword8_count_loop)
> +
> +L(postword2_count_loop):
> +	clrlwi.	r7,r5,28
> +	beq	L(end_memset)
> +	mr	r8,r11
> +	mr	r9,r11
> +	mr	r10,r11
> +	mtxer	r7
> +	stswx	r8,0,r3
> +	b	L(end_memset)
> +END (BP_SYM (memset))
> +libc_hidden_builtin_def (memset)
> diff --git a/sysdeps/powerpc/powerpc32/405/strcmp.S b/sysdeps/powerpc/powerpc32/405/strcmp.S
> new file mode 100644
> index 0000000..6eb5b5a
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/strcmp.S
> @@ -0,0 +1,137 @@
> +/* Optimized strcmp implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* strcmp
> +
> +	Register Use
> +	r0:temp return equality
> +	r3:source1 address, return equality
> +	r4:source2 address
> +
> +	Implementation description
> +	Check 2 words from src1 and src2. If unequal jump to end and
> +	return src1 > src2 or src1 < src2.
> +	If null check bytes before null and then jump to end and
> +	return src1 > src2, src1 < src2 or src1 = src2.
> +	If src1 = src2 and no null, repeat. */
> +
> +EALIGN (BP_SYM(strcmp),5,0)
> +	neg	r7,r3
> +	clrlwi	r7,r7,20
> +	neg	r8,r4
> +	clrlwi	r8,r8,20
> +	srwi.	r7,r7,5
> +	beq	L(byte_loop)
> +	srwi.	r8,r8,5
> +	beq	L(byte_loop)
> +	cmplw	r7,r8
> +	mtctr	r7
> +	ble	L(big_loop)
> +	mtctr	r8
> +
> +L(big_loop):
> +	lwz	r5,0(r3)
> +	lwz	r6,4(r3)
> +	lwz	r8,0(r4)
> +	lwz	r9,4(r4)
> +	dlmzb.	r12,r5,r6
> +	bne	L(end_check)
> +	cmplw	r5,r8
> +	bne	L(st1)
> +	cmplw	r6,r9
> +	bne	L(st1)
> +	lwz	r5,8(r3)
> +	lwz	r6,12(r3)
> +	lwz	r8,8(r4)
> +	lwz	r9,12(r4)
> +	dlmzb.	r12,r5,r6
> +	bne	L(end_check)
> +	cmplw	r5,r8
> +	bne	L(st1)
> +	cmplw	r6,r9
> +	bne	L(st1)
> +	lwz	r5,16(r3)
> +	lwz	r6,20(r3)
> +	lwz	r8,16(r4)
> +	lwz	r9,20(r4)
> +	dlmzb.	r12,r5,r6
> +	bne	L(end_check)
> +	cmplw	r5,r8
> +	bne	L(st1)
> +	cmplw	r6,r9
> +	bne	L(st1)
> +	lwz	r5,24(r3)
> +	lwz	r6,28(r3)
> +	addi	r3,r3,0x20
> +	lwz	r8,24(r4)
> +	lwz	r9,28(r4)
> +	addi	r4,r4,0x20
> +	dlmzb.	r12,r5,r6
> +	bne	L(end_check)
> +	cmplw	r5,r8
> +	bne	L(st1)
> +	cmplw	r6,r9
> +	bne	L(st1)
> +	bdnz	L(big_loop)
> +	b	L(byte_loop)
> +
> +L(end_check):
> +	subfic	r12,r12,4
> +	blt	L(end_check2)
> +	rlwinm	r12,r12,3,0,31
> +	srw	r5,r5,r12
> +	srw	r8,r8,r12
> +	cmplw	r5,r8
> +	bne	L(st1)
> +	b	L(end_strcmp)
> +
> +L(end_check2):
> +	addi	r12,r12,4
> +	cmplw	r5,r8
> +	rlwinm	r12,r12,3,0,31
> +	bne	L(st1)
> +	srw	r6,r6,r12
> +	srw	r9,r9,r12
> +	cmplw	r6,r9
> +	bne	L(st1)
> +
> +L(end_strcmp):
> +	addi	r3,r0,0
> +	blr
> +
> +L(st1):
> +	mfcr	r3
> +	blr
> +
> +L(byte_loop):
> +	lbz	r5,0(r3)
> +	addi	r3,r3,1
> +	lbz	r6,0(r4)
> +	addi	r4,r4,1
> +	cmplw	r5,r6
> +	bne	L(st1)
> +	cmpwi	r5,0
> +	beq	L(end_strcmp)
> +	b	L(byte_loop)
> +END (BP_SYM (strcmp))
> +libc_hidden_builtin_def (strcmp)
> diff --git a/sysdeps/powerpc/powerpc32/405/strcpy.S b/sysdeps/powerpc/powerpc32/405/strcpy.S
> new file mode 100644
> index 0000000..025ac16
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/strcpy.S
> @@ -0,0 +1,110 @@
> +/* Optimized strcpy implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* strcpy
> +
> +	Register Use
> +	r3:destination and return address
> +	r4:source address
> +	r10:temp destination address
> +
> +	Implementation description
> +	Loop by checking 2 words at a time, with dlmzb. Check if there is a null
> +	in the 2 words. If there is a null jump to end checking to determine
> +	where in the last 8 bytes it is. Copy the appropriate bytes of the last
> +	8 according to the null position. */
> +
> +EALIGN (BP_SYM (strcpy), 5, 0)
> +	neg	r7,r4
> +	subi	r4,r4,1
> +	clrlwi.	r8,r7,29
> +	subi	r10,r3,1
> +	beq	L(pre_word8_loop)
> +	mtctr	r8
> +
> +L(loop):
> +	lbzu	r5,0x01(r4)
> +	cmpi	cr5,r5,0x0
> +	stbu	r5,0x01(r10)
> +	beq	cr5,L(end_strcpy)
> +	bdnz	L(loop)
> +
> +L(pre_word8_loop):
> +	subi	r4,r4,3
> +	subi	r10,r10,3
> +
> +L(word8_loop):
> +	lwzu	r5,0x04(r4)
> +	lwzu	r6,0x04(r4)
> +	dlmzb.	r11,r5,r6
> +	bne	L(byte_copy)
> +	stwu	r5,0x04(r10)
> +	stwu	r6,0x04(r10)
> +	lwzu	r5,0x04(r4)
> +	lwzu	r6,0x04(r4)
> +	dlmzb.	r11,r5,r6
> +	bne	L(byte_copy)
> +	stwu	r5,0x04(r10)
> +	stwu	r6,0x04(r10)
> +	lwzu	r5,0x04(r4)
> +	lwzu	r6,0x04(r4)
> +	dlmzb.	r11,r5,r6
> +	bne	L(byte_copy)
> +	stwu	r5,0x04(r10)
> +	stwu	r6,0x04(r10)
> +	lwzu	r5,0x04(r4)
> +	lwzu	r6,0x04(r4)
> +	dlmzb.	r11,r5,r6
> +	bne	L(byte_copy)
> +	stwu	r5,0x04(r10)
> +	stwu	r6,0x04(r10)
> +	b	L(word8_loop)
> +
> +L(last_bytes_copy):
> +	stwu	r5,0x04(r10)
> +	subi	r11,r11,4
> +	mtctr	r11
> +	addi	r10,r10,3
> +	subi	r4,r4,1
> +
> +L(last_bytes_copy_loop):
> +	lbzu	r5,0x01(r4)
> +	stbu	r5,0x01(r10)
> +	bdnz	L(last_bytes_copy_loop)
> +	blr
> +
> +L(byte_copy):
> +	blt	L(last_bytes_copy)
> +	mtctr	r11
> +	addi	r10,r10,3
> +	subi	r4,r4,5
> +
> +L(last_bytes_copy_loop2):
> +	lbzu	r5,0x01(r4)
> +	stbu	r5,0x01(r10)
> +	bdnz	L(last_bytes_copy_loop2)
> +
> +L(end_strcpy):
> +	blr
> +END (BP_SYM (strcpy))
> +libc_hidden_builtin_def (strcpy)
> diff --git a/sysdeps/powerpc/powerpc32/405/strlen.S b/sysdeps/powerpc/powerpc32/405/strlen.S
> new file mode 100644
> index 0000000..146b582
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/strlen.S
> @@ -0,0 +1,78 @@
> +/* Optimized strlen implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* strlen
> +
> +	Register Use
> +	r3:source address and return length of string
> +	r4:byte counter
> +
> +	Implementation description
> +	Load 2 words at a time and count bytes, if we find null we subtract one from
> +	the count and return the count value. We need to subtract one because
> +	we don't count the null character as a byte. */
> +
> +EALIGN (BP_SYM (strlen),5,0)
> +	neg	r7,r3
> +	clrlwi.	r8,r7,29
> +	addi	r4,0,0
> +	beq	L(byte_count_loop)
> +	mtctr	r8
> +
> +L(loop):
> +	lbz	r5,0(r3)
> +	cmpi	cr5,r5,0x0
> +	addi	r3,r3,0x1
> +	addi	r4,r4,0x1
> +	beq	cr5,L(end_strlen)
> +	bdnz	L(loop)
> +
> +L(byte_count_loop):
> +	lwz	r5,0(r3)
> +	lwz	r6,4(r3)
> +	dlmzb.	r12,r5,r6
> +	add	r4,r4,r12
> +	bne	L(end_strlen)
> +	lwz	r5,8(r3)
> +	lwz	r6,12(r3)
> +	dlmzb.	r12,r5,r6
> +	add	r4,r4,r12
> +	bne	L(end_strlen)
> +	lwz	r5,16(r3)
> +	lwz	r6,20(r3)
> +	dlmzb.	r12,r5,r6
> +	add	r4,r4,r12
> +	bne	L(end_strlen)
> +	lwz	r5,24(r3)
> +	lwz	r6,28(r3)
> +	addi	r3,r3,0x20
> +	dlmzb.	r12,r5,r6
> +	add	r4,r4,r12
> +	bne	L(end_strlen)
> +	b	L(byte_count_loop)
> +
> +L(end_strlen):
> +	addi	r3,r4,-1
> +	blr
> +END (BP_SYM (strlen))
> +libc_hidden_builtin_def (strlen)
> diff --git a/sysdeps/powerpc/powerpc32/405/strncmp.S b/sysdeps/powerpc/powerpc32/405/strncmp.S
> new file mode 100644
> index 0000000..c1beb23
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/405/strncmp.S
> @@ -0,0 +1,131 @@
> +/* Optimized strncmp implementation for PowerPC476.
> +   Copyright (C) 2010 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 <sysdep.h>
> +#include <bp-sym.h>
> +#include <bp-asm.h>
> +
> +/* strncmp
> +
> +	Register Use
> +	r0:temp return equality
> +	r3:source1 address, return equality
> +	r4:source2 address
> +	r5:byte count
> +
> +	Implementation description
> +	Touch in 3 lines of D-cache.
> +	If source1 or source2 is unaligned copy 0-3 bytes to make source1 aligned
> +	Check 2 words from src1 and src2. If unequal jump to end and
> +	return src1 > src2 or src1 < src2.
> +	If null check bytes before null and then jump to end and
> +	return src1 > src2, src1 < src2 or src1 = src2.
> +	If count = zero check bytes before zero counter and then jump to end and
> +	return src1 > src2, src1 < src2 or src1 = src2.
> +	If src1 = src2 and no null, repeat. */
> +
> +EALIGN (BP_SYM(strncmp),5,0)
> +	neg	r7,r3
> +	clrlwi	r7,r7,20
> +	neg	r8,r4
> +	clrlwi	r8,r8,20
> +	srwi.	r7,r7,3
> +	beq	L(prebyte_count_loop)
> +	srwi.	r8,r8,3
> +	beq	L(prebyte_count_loop)
> +	cmplw	r7,r8
> +	mtctr	r7
> +	ble	L(preword2_count_loop)
> +	mtctr	r8
> +
> +L(preword2_count_loop):
> +	srwi.	r6,r5,3
> +	beq	L(prebyte_count_loop)
> +	mfctr	r7
> +	cmplw	r6,r7
> +	bgt	L(set_count_loop)
> +	mtctr	r6
> +	clrlwi	r5,r5,29
> +
> +L(word2_count_loop):
> +	lwz	r10,0(r3)
> +	lwz	r6,4(r3)
> +	addi	r3,r3,0x08
> +	lwz	r8,0(r4)
> +	lwz	r9,4(r4)
> +	addi	r4,r4,0x08
> +	dlmzb.	r12,r10,r6
> +	bne	L(end_check)
> +	cmplw	r10,r8
> +	bne	L(st1)
> +	cmplw	r6,r9
> +	bne	L(st1)
> +	bdnz	L(word2_count_loop)
> +
> +L(prebyte_count_loop):
> +	addi	r5,r5,1
> +	mtctr	r5
> +	bdz	L(end_strncmp)
> +
> +L(byte_count_loop):
> +	lbz	r6,0(r3)
> +	addi	r3,r3,1
> +	lbz	r7,0(r4)
> +	addi	r4,r4,1
> +	cmplw	r6,r7
> +	bne	L(st1)
> +	cmpwi	r6,0
> +	beq	L(end_strncmp)
> +	bdnz	L(byte_count_loop)
> +	b	L(end_strncmp)
> +
> +L(set_count_loop):
> +	slwi	r7,r7,3
> +	subf	r5,r7,r5
> +	b	L(word2_count_loop)
> +
> +L(end_check):
> +	subfic	r12,r12,4
> +	blt	L(end_check2)
> +	rlwinm	r12,r12,3,0,31
> +	srw	r10,r10,r12
> +	srw	r8,r8,r12
> +	cmplw	r10,r8
> +	bne	L(st1)
> +	b	L(end_strncmp)
> +
> +L(end_check2):
> +	addi	r12,r12,4
> +	cmplw	r10,r8
> +	rlwinm	r12,r12,3,0,31
> +	bne	L(st1)
> +	srw	r6,r6,r12
> +	srw	r9,r9,r12
> +	cmplw	r6,r9
> +	bne	L(st1)
> +
> +L(end_strncmp):
> +	addi	r3,r0,0
> +	blr
> +
> +L(st1):
> +	mfcr	r3
> +	blr
> +END (BP_SYM (strncmp))
> +libc_hidden_builtin_def (strncmp)
> diff --git a/sysdeps/powerpc/powerpc32/440/Implies b/sysdeps/powerpc/powerpc32/440/Implies
> new file mode 100644
> index 0000000..70c0d2e
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/440/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/405/fpu
> +powerpc/powerpc32/405
> diff --git a/sysdeps/powerpc/powerpc32/464/Implies b/sysdeps/powerpc/powerpc32/464/Implies
> new file mode 100644
> index 0000000..c3e52c5
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/464/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/440/fpu
> +powerpc/powerpc32/440
> diff --git a/sysdeps/powerpc/powerpc32/476/Implies b/sysdeps/powerpc/powerpc32/476/Implies
> new file mode 100644
> index 0000000..2829f9c
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/476/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/464/fpu
> +powerpc/powerpc32/464
> diff --git a/sysdeps/powerpc/powerpc32/Makefile b/sysdeps/powerpc/powerpc32/Makefile
> new file mode 100644
> index 0000000..3d235de
> --- /dev/null
> +++ b/sysdeps/powerpc/powerpc32/Makefile
> @@ -0,0 +1,8 @@
> +# Some Powerpc32 variants assume soft-fp is the default even though there is
> +# an fp variant so provide -mhard-float if --with-fp is explicitly passed.
> +
> +ifeq ($(with-fp),yes)
> ++cflags += -mhard-float
> +ASFLAGS += -mhard-float
> +sysdep-LDFLAGS += -mhard-float
> +endif
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/405/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/405/Implies
> new file mode 100644
> index 0000000..70c0d2e
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/405/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/405/fpu
> +powerpc/powerpc32/405
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/440/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/440/Implies
> new file mode 100644
> index 0000000..c3e52c5
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/440/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/440/fpu
> +powerpc/powerpc32/440
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/464/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/464/Implies
> new file mode 100644
> index 0000000..2829f9c
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/464/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/464/fpu
> +powerpc/powerpc32/464
> diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/476/Implies b/sysdeps/unix/sysv/linux/powerpc/powerpc32/476/Implies
> new file mode 100644
> index 0000000..80f9170
> --- /dev/null
> +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/476/Implies
> @@ -0,0 +1,2 @@
> +powerpc/powerpc32/476/fpu
> +powerpc/powerpc32/476
> 
>