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patches/gcc/4.3.5/340-make-mno-spe-work-as-expected.patch
author "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
Wed Jun 08 15:47:43 2011 +0200 (2011-06-08)
changeset 2508 9e2761e59a75
parent 1461 35b30f8fb307
permissions -rw-r--r--
debug/cross-gdb: check host dependencies

Cross-gdb depends on expat and python. If either is missing, cross-gdb will
build successfully, but lacking some features.

Especially, if expat is missing, cross-gdb will be unable to parse the target
description, which may lead to runtime malfunctions and the following GDB
warning:
"Can not parse XML target description; XML support was disabled at compile time"

Hence, expat should be considered mandatory.

On the other hand, the features missing without python are not critical, so
python should not be considered mandatory.

This patch does the following:
- At configure time, warn the user if either expat or python is missing.
- In menuconfig, disable the static build options regarding cross-gdb if no
static version of expat is available, and disable cross-gdb if expat is
missing.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
[yann.morin.1998@anciens.enib.fr: add comment for impossible static cross-gdb]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Original patch from: ../4.3.2/340-make-mno-spe-work-as-expected.patch

     2 

     3 -= BEGIN original header =-

     4 2008-04-03  Nathan Froyd  <froydnj@codesourcery.com>

     5             Nathan Sidwell  <nathan@codesourcery.com>

     6 

     7         * config/rs6000/rs6000.opt (mspe): Remove Var property.

     8         (misel): Likewise.

     9         * config/rs6000/rs6000.h (rs6000_spe): Declare.

    10         (rs6000_isel): Likewise.

    11         * config/rs6000/rs6000.c (rs6000_spe): New variable.

    12         (rs6000_isel): New variable.

    13         (rs6000_handle_option): Handle OPT_mspe and OPT_misel.                                                                                         

    14 

    15 -= END original header =-

    16 

    17 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.c gcc-4.3.3/gcc/config/rs6000/rs6000.c

    18 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.c	2008-11-18 23:07:58.000000000 +0100

    19 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.c	2009-01-27 22:28:55.000000000 +0100

    20 @@ -174,9 +174,15 @@

    21  /* Nonzero to use AltiVec ABI.  */

    22  int rs6000_altivec_abi;

    23  

    24 +/* Nonzero if we want SPE SIMD instructions.  */

    25 +int rs6000_spe;

    26 +

    27  /* Nonzero if we want SPE ABI extensions.  */

    28  int rs6000_spe_abi;

    29  

    30 +/* Nonzero to use isel instructions.  */

    31 +int rs6000_isel;

    32 +

    33  /* Nonzero if floating point operations are done in the GPRs.  */

    34  int rs6000_float_gprs = 0;

    35  

    36 @@ -2144,11 +2150,21 @@

    37        rs6000_parse_yes_no_option ("vrsave", arg, &(TARGET_ALTIVEC_VRSAVE));

    38        break;

    39  

    40 +    case OPT_misel:

    41 +      rs6000_explicit_options.isel = true;

    42 +      rs6000_isel = value;

    43 +      break;

    44 +

    45      case OPT_misel_:

    46        rs6000_explicit_options.isel = true;

    47        rs6000_parse_yes_no_option ("isel", arg, &(rs6000_isel));

    48        break;

    49  

    50 +    case OPT_mspe:

    51 +      rs6000_explicit_options.spe = true;

    52 +      rs6000_spe = value;

    53 +      break;

    54 +

    55      case OPT_mspe_:

    56        rs6000_explicit_options.spe = true;

    57        rs6000_parse_yes_no_option ("spe", arg, &(rs6000_spe));

    58 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.h gcc-4.3.3/gcc/config/rs6000/rs6000.h

    59 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.h	2008-01-26 18:18:35.000000000 +0100

    60 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.h	2009-01-27 22:28:55.000000000 +0100

    61 @@ -349,6 +349,8 @@

    62  extern int rs6000_ieeequad;

    63  extern int rs6000_altivec_abi;

    64  extern int rs6000_spe_abi;

    65 +extern int rs6000_spe;

    66 +extern int rs6000_isel;

    67  extern int rs6000_float_gprs;

    68  extern int rs6000_alignment_flags;

    69  extern const char *rs6000_sched_insert_nops_str;

    70 diff -durN gcc-4.3.3.orig/gcc/config/rs6000/rs6000.opt gcc-4.3.3/gcc/config/rs6000/rs6000.opt

    71 --- gcc-4.3.3.orig/gcc/config/rs6000/rs6000.opt	2007-10-31 08:56:01.000000000 +0100

    72 +++ gcc-4.3.3/gcc/config/rs6000/rs6000.opt	2009-01-27 22:28:55.000000000 +0100

    73 @@ -190,7 +190,7 @@

    74  -mvrsave=yes/no	Deprecated option.  Use -mvrsave/-mno-vrsave instead

    75  

    76  misel

    77 -Target Var(rs6000_isel)

    78 +Target

    79  Generate isel instructions

    80  

    81  misel=

    82 @@ -198,7 +198,7 @@

    83  -misel=yes/no	Deprecated option.  Use -misel/-mno-isel instead

    84  

    85  mspe

    86 -Target Var(rs6000_spe)

    87 +Target

    88  Generate SPE SIMD instructions on E500

    89  

    90  mpaired
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