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patches/gcc/3.2.3/gcc-20020722-ppc405erratum77.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Feb 24 11:00:05 2007 +0000 (2007-02-24)
changeset 1 eeea35fbf182
permissions -rw-r--r--
Add the full crosstool-NG sources to the new repository of its own.
You might just say: 'Yeah! crosstool-NG's got its own repo!".
Unfortunately, that's because the previous repo got damaged beyond repair and I had no backup.
That means I'm putting backups in place in the afternoon.
That also means we've lost history... :-( 
     1 # See http://gcc.gnu.org/PR7383, http://www.kegel.com/xgcc3/ppc405erratum77.html

     2 # Fixed in gcc-3.3

     3 

     4 diff -aur gcc-20020722.orig/gcc/config/rs6000/rs6000.h gcc-20020722/gcc/config/rs6000/rs6000.h

     5 --- gcc-20020722.orig/gcc/config/rs6000/rs6000.h	Thu Jul 25 09:32:21 2002

     6 +++ gcc-20020722/gcc/config/rs6000/rs6000.h	Thu Jul 25 09:34:45 2002

     7 @@ -66,7 +66,7 @@

     8  %{mcpu=rsc1: -D_ARCH_PWR} \

     9  %{mcpu=401: -D_ARCH_PPC} \

    10  %{mcpu=403: -D_ARCH_PPC} \

    11 -%{mcpu=405: -D_ARCH_PPC} \

    12 +%{mcpu=405: -D_ARCH_PPC -D__PPC405__} \

    13  %{mcpu=505: -D_ARCH_PPC} \

    14  %{mcpu=601: -D_ARCH_PPC -D_ARCH_PWR} \

    15  %{mcpu=602: -D_ARCH_PPC} \

    16 diff -aur gcc-20020722.orig/libjava/sysdep/powerpc/locks.h gcc-20020722/libjava/sysdep/powerpc/locks.h

    17 --- gcc-20020722.orig/libjava/sysdep/powerpc/locks.h	Thu Jul 25 09:32:30 2002

    18 +++ gcc-20020722/libjava/sysdep/powerpc/locks.h	Thu Jul 25 11:39:13 2002

    19 @@ -11,6 +11,17 @@

    20  #ifndef __SYSDEP_LOCKS_H__

    21  #define __SYSDEP_LOCKS_H__

    22  

    23 +#ifdef __PPC405__

    24 +// workaround for PPC405 erratum #77 - 07/18/02 JRO, dank, NN.  References:

    25 +// http://www-3.ibm.com/chips/techlib/techlib.nsf/techdocs/89DED00DEBFF54BF87256A8000491BA2/$file/405CR_C_errata_1_2.pdf

    26 +// http://ppc.bkbits.net:8080/linuxppc_2_4_devel/cset@1.489

    27 +// http://www.kegel.com/xgcc3/ppc405erratum77.html

    28 +// FIXME: using dbct instead of sync would be faster

    29 +#define __LIBGCJ_PPC405_ERR77_SYNC   "sync \n\t"

    30 +#else

    31 +#define __LIBGCJ_PPC405_ERR77_SYNC

    32 +#endif

    33 +

    34  typedef size_t obj_addr_t;	/* Integer type big enough for object	*/

    35  				/* address.				*/

    36  

    37 @@ -25,6 +36,7 @@

    38  	   "0:    lwarx %0,0,%1 ;"

    39  	   "      xor. %0,%3,%0;"

    40  	   "      bne 1f;"

    41 +  	  __LIBGCJ_PPC405_ERR77_SYNC

    42  	   "      stwcx. %2,0,%1;"

    43  	   "      bne- 0b;"

    44  	   "1:    "

    45 @@ -58,6 +70,7 @@

    46  	   "0:    lwarx %0,0,%1 ;"

    47  	   "      xor. %0,%3,%0;"

    48  	   "      bne 1f;"

    49 +	   __LIBGCJ_PPC405_ERR77_SYNC	 

    50  	   "      stwcx. %2,0,%1;"

    51  	   "      bne- 0b;"

    52  	   "1:    "

    53 diff -aur gcc-20020722.orig/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h gcc-20020722/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h

    54 --- gcc-20020722.orig/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h	Thu Jul 25 09:32:31 2002

    55 +++ gcc-20020722/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h	Thu Jul 25 09:34:45 2002

    56 @@ -32,6 +32,17 @@

    57  

    58  typedef int _Atomic_word;

    59  

    60 +#ifdef __PPC405__

    61 +// workaround for PPC405 erratum #77 - 07/18/02 JRO & dank.  References:

    62 +// http://www-3.ibm.com/chips/techlib/techlib.nsf/techdocs/89DED00DEBFF54BF87256A8000491BA2/$file/405CR_C_errata_1_2.pdf

    63 +// http://ppc.bkbits.net:8080/linuxppc_2_4_devel/cset@1.489

    64 +// http://www.kegel.com/xgcc3/ppc405erratum77.html

    65 +// FIXME: using dbct instead of sync would be faster

    66 +#define	__LIBSTDCPP_PPC405_ERR77_SYNC	"sync \n\t"

    67 +#else

    68 +#define __LIBSTDCPP_PPC405_ERR77_SYNC

    69 +#endif

    70 +

    71  static inline _Atomic_word

    72  __attribute__ ((__unused__))

    73  __exchange_and_add (volatile _Atomic_word* __mem, int __val)

    74 @@ -42,6 +53,7 @@

    75  	"0:\t"

    76  	"lwarx    %0,0,%2 \n\t"

    77  	"add%I3   %1,%0,%3 \n\t"

    78 +	__LIBSTDCPP_PPC405_ERR77_SYNC

    79  	"stwcx.   %1,0,%2 \n\t"

    80  	"bne-     0b \n\t"

    81  	"/* End exchange & add */"

    82 @@ -61,6 +73,7 @@

    83  	"0:\t"

    84  	"lwarx    %0,0,%1 \n\t"

    85  	"add%I2   %0,%0,%2 \n\t"

    86 +	__LIBSTDCPP_PPC405_ERR77_SYNC

    87  	"stwcx.   %0,0,%1 \n\t"

    88  	"bne-     0b \n\t"

    89  	"/* End atomic add */"

    90 @@ -78,6 +91,7 @@

    91  	"/* Inline always swap */\n"

    92  	"0:\t"

    93  	"lwarx    %0,0,%1 \n\t"

    94 +	__LIBSTDCPP_PPC405_ERR77_SYNC

    95  	"stwcx.   %2,0,%1 \n\t"

    96  	"bne-     0b \n\t"

    97  	"/* End always swap */"

    98 @@ -98,6 +112,7 @@

    99  	"lwarx    %0,0,%1 \n\t"

   100  	"cmpwi    %0,0 \n\t"

   101  	"bne-     1f \n\t"

   102 +	__LIBSTDCPP_PPC405_ERR77_SYNC

   103  	"stwcx.   %2,0,%1 \n\t"

   104  	"bne-     0b \n"

   105  	"1:\n\t"
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