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patches/gcc/4.3.1/310-arm-softfloat.patch
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 diff -durN gcc-4.3.1.orig/gcc/config/arm/linux-elf.h gcc-4.3.1/gcc/config/arm/linux-elf.h

     2 --- gcc-4.3.1.orig/gcc/config/arm/linux-elf.h	2007-11-08 14:44:09.000000000 +0100

     3 +++ gcc-4.3.1/gcc/config/arm/linux-elf.h	2008-07-23 15:30:57.000000000 +0200

     4 @@ -60,7 +60,7 @@

     5     %{shared:-lc} \

     6     %{!shared:%{profile:-lc_p}%{!profile:-lc}}"

     7  

     8 -#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"

     9 +#define LIBGCC_SPEC "-lgcc"

    10  

    11  #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"

    12  

    13 diff -durN gcc-4.3.1.orig/gcc/config/arm/t-linux gcc-4.3.1/gcc/config/arm/t-linux

    14 --- gcc-4.3.1.orig/gcc/config/arm/t-linux	2006-11-09 23:14:27.000000000 +0100

    15 +++ gcc-4.3.1/gcc/config/arm/t-linux	2008-07-23 19:15:25.000000000 +0200

    16 @@ -3,7 +3,12 @@

    17  TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fPIC

    18  

    19  LIB1ASMSRC = arm/lib1funcs.asm

    20 -LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx

    21 +LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \

    22 +	_call_via_rX _interwork_call_via_rX \

    23 +	_lshrdi3 _ashrdi3 _ashldi3 \

    24 +	_negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi _fixunsdfsi \

    25 +	_truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \

    26 +	_fixsfsi _fixunssfsi _floatdidf _floatdisf _floatundidf _floatundisf

    27  

    28  # MULTILIB_OPTIONS = mhard-float/msoft-float

    29  # MULTILIB_DIRNAMES = hard-float soft-float
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