patches/gcc/4.2.2/800-arm-bigendian.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sat Apr 26 21:31:05 2008 +0000 (2008-04-26)
changeset 454 372b2f397baa
parent 313 2f223aafc7cb
permissions -rw-r--r--
Configure tsocks with a simple heuristic.

Consider the proxy has to be in a 'local' network. It means it is directly
reachable by the local machine, even if the local machine has to hop through
one or more gates to reach the proxy (often the case in enterprise networks
where class A 10.0.0.0/8 is in fact sub-divided into smaller networks, each
one of them in a different location, eg. 10.1.0.0/16 in a place, while
10.2.0.0/16 would be on the other side of the world). Not being in the same
subnet does not mean the proxy is not available.

So we will build a mask with at most high bits set, which defines a network
that has both the local machine and the proxy. Because a machine may have
more than one interface, build a mask for each of them, removing 127.0.0.1
which is added automagically by tsocks, and removing duplicate masks.

If all of this does not work, then it means the local machine can NOT in fact
reach the proxy, which in turn means the user mis-configured something (most
probably a typo...).

/trunk/scripts/crosstool.sh | 61 52 9 0 +++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 52 insertions(+), 9 deletions(-)
     1 diff -durN gcc-4.2.1.orig/gcc/config/arm/linux-elf.h gcc-4.2.1/gcc/config/arm/linux-elf.h
     2 --- gcc-4.2.1.orig/gcc/config/arm/linux-elf.h	2006-02-17 00:29:10.000000000 +0100
     3 +++ gcc-4.2.1/gcc/config/arm/linux-elf.h	2007-08-03 20:36:43.000000000 +0200
     4 @@ -28,19 +28,33 @@
     5  #undef  TARGET_VERSION
     6  #define TARGET_VERSION  fputs (" (ARM GNU/Linux with ELF)", stderr);
     7  
     8 +/*
     9 + * 'config.gcc' defines TARGET_BIG_ENDIAN_DEFAULT as 1 for arm*b-*
    10 + * (big endian) configurations.
    11 + */
    12 +#if TARGET_BIG_ENDIAN_DEFAULT
    13 +#define TARGET_ENDIAN_DEFAULT MASK_BIG_END
    14 +#define TARGET_ENDIAN_OPTION "mbig-endian"
    15 +#define TARGET_LINKER_EMULATION "armelfb_linux"
    16 +#else
    17 +#define TARGET_ENDIAN_DEFAULT 0
    18 +#define TARGET_ENDIAN_OPTION "mlittle-endian"
    19 +#define TARGET_LINKER_EMULATION "armelf_linux"
    20 +#endif
    21 +
    22  #undef  TARGET_DEFAULT_FLOAT_ABI
    23  #define TARGET_DEFAULT_FLOAT_ABI ARM_FLOAT_ABI_HARD
    24  
    25  #undef  TARGET_DEFAULT
    26 -#define TARGET_DEFAULT (0)
    27 +#define TARGET_DEFAULT (TARGET_ENDIAN_DEFAULT)
    28  
    29  #define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6
    30  
    31 -#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux -p"
    32 +#define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p"
    33  
    34  #undef  MULTILIB_DEFAULTS
    35  #define MULTILIB_DEFAULTS \
    36 -	{ "marm", "mlittle-endian", "mhard-float", "mno-thumb-interwork" }
    37 +	{ "marm", TARGET_ENDIAN_OPTION, "mhard-float", "mno-thumb-interwork" }
    38  
    39  /* Now we define the strings used to build the spec file.  */
    40  #undef  LIB_SPEC
    41 @@ -61,7 +75,7 @@
    42     %{rdynamic:-export-dynamic} \
    43     %{!dynamic-linker:-dynamic-linker " LINUX_DYNAMIC_LINKER "} \
    44     -X \
    45 -   %{mbig-endian:-EB}" \
    46 +   %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
    47     SUBTARGET_EXTRA_LINK_SPEC
    48  
    49  #undef  LINK_SPEC
    50 diff -durN gcc-4.2.1.orig/gcc/config.gcc gcc-4.2.1/gcc/config.gcc
    51 --- gcc-4.2.1.orig/gcc/config.gcc	2007-08-03 20:29:52.000000000 +0200
    52 +++ gcc-4.2.1/gcc/config.gcc	2007-08-03 20:36:43.000000000 +0200
    53 @@ -705,6 +705,11 @@
    54  	tm_file="dbxelf.h elfos.h linux.h arm/elf.h arm/linux-gas.h arm/linux-elf.h"
    55  	tmake_file="${tmake_file} t-linux arm/t-arm"
    56  	case ${target} in
    57 +	arm*b-*)
    58 +		tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
    59 +		;;
    60 +	esac
    61 +	case ${target} in
    62  	arm*-*-linux-*eabi)
    63  	    tm_file="$tm_file arm/bpabi.h arm/linux-eabi.h"
    64  	    tmake_file="$tmake_file arm/t-arm-elf arm/t-bpabi arm/t-linux-eabi"