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patches/eglibc/2_9/100-powerpc-8xx-CPU15-errata.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Dec 30 15:36:22 2009 +0100 (2009-12-30)
changeset 1669 61edd9d19e3c
permissions -rw-r--r--
scripts/functions: add aria2, a powerfull downloader

aria2 is a powerfull downloader that is capable of chunking and
parallel retrieval.

Due to li;itations in crosstool-NG retrieval facilities, it's not possible
to take fully advantage of aria2. It might happen that, in the future,
those limitations get lifted away, so we can take use features such as
parallel downloading from more than one server at the same time. For now,
it should still speed up downloads thanks to parallel downloading of chunks. 
     1 diff -ru eglibc-2_9_orig/sysdeps/powerpc/powerpc32/memset.S eglibc-2_9/sysdeps/powerpc/powerpc32/memset.S

     2 --- eglibc-2_9_orig/sysdeps/powerpc/powerpc32/memset.S	2007-04-13 08:35:45.000000000 -0700

     3 +++ eglibc-2_9/sysdeps/powerpc/powerpc32/memset.S	2009-05-06 16:52:04.000000000 -0700

     4 @@ -112,11 +112,13 @@

     5  	clrrwi.	rALIGN, rLEN, 5

     6  	mtcrf	0x01, rLEN	/* 40th instruction from .align */

     7  

     8 +#ifndef BROKEN_PPC_8xx_CPU15

     9  /* Check if we can use the special case for clearing memory using dcbz.

    10     This requires that we know the correct cache line size for this

    11     processor.  Getting the __cache_line_size may require establishing GOT

    12     addressability, so branch out of line to set this up.  */

    13  	beq	cr1, L(checklinesize)

    14 +#endif

    15  

    16  /* Store blocks of 32-bytes (256-bits) starting on a 32-byte boundary.

    17     Can't assume that rCHR is zero or that the cache line size is either

    18 @@ -158,6 +160,7 @@

    19  	add	rMEMP, rMEMP, rALIGN

    20  	b	L(medium_tail2)	/* 72nd instruction from .align */

    21  

    22 +#ifndef BROKEN_PPC_8xx_CPU15

    23  	.align	5

    24  	nop

    25  /* Clear cache lines of memory in 128-byte chunks.

    26 @@ -191,6 +194,7 @@

    27  	bdnz	L(zloop)

    28  	beqlr	cr5

    29  	b	L(medium_tail2)

    30 +#endif /* ! BROKEN_PPC_8xx_CPU15 */

    31  

    32  	.align	5

    33  L(small):

    34 @@ -248,6 +252,7 @@

    35  	stw	rCHR, -8(rMEMP)

    36  	blr

    37  

    38 +#ifndef BROKEN_PPC_8xx_CPU15

    39  L(checklinesize):

    40  #ifdef SHARED

    41  	mflr	rTMP

    42 @@ -329,6 +334,7 @@

    43  L(handletail32):

    44  	clrrwi.	rALIGN, rLEN, 5

    45  	b	L(nondcbz)

    46 +#endif /* ! BROKEN_PPC_8xx_CPU15 */

    47  

    48  END (BP_SYM (memset))

    49  libc_hidden_builtin_def (memset)
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