patches/gcc/4.3.3/340-make-mno-spe-work-as-expected.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:38:18 2010 +0200 (2010-09-12)
changeset 2120 48de021b3a9e
permissions -rw-r--r--
arch/mips: add experimental mips64 samples

Both toolchains were tested to successfully:
- _build_ busybox, giving respectively an n32 and an n64 binary
although it has not been run-tested.
- build linux-2.6.36-rc3 for Loongson, giving an n64 vmlinux
(which is expected, due to the way the kernel is built),
and the kernel properly boots!

Credits are due to Julien MOUTHINO (julm on freenode#uClibc) for
testing that the kernel boots on his hardware! Cheers! ;-)

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