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patches/gcc/4.4.0/390-arm-softfloat-libgcc.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 [PATCH] add the correct symbols to libgcc for uclibc arm softfloat

     2 

     3 Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

     4 ---

     5  gcc/config/arm/linux-elf.h |    2 +-

     6  gcc/config/arm/t-linux     |    6 +++++-

     7  2 files changed, 6 insertions(+), 2 deletions(-)

     8 

     9 Index: gcc-4.4.0/gcc/config/arm/t-linux

    10 ===================================================================

    11 --- gcc-4.4.0.orig/gcc/config/arm/t-linux

    12 +++ gcc-4.4.0/gcc/config/arm/t-linux

    13 @@ -4,7 +4,11 @@

    14  

    15  LIB1ASMSRC = arm/lib1funcs.asm

    16  LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx _clzsi2 _clzdi2 \

    17 -	_arm_addsubdf3 _arm_addsubsf3

    18 +	_arm_addsubdf3 _arm_addsubsf3 \

    19 +	_arm_negdf2 _arm_muldivdf3 _arm_cmpdf2 _arm_unorddf2 \

    20 +	_arm_fixdfsi _arm_fixunsdfsi _arm_truncdfsf2 \

    21 +	_arm_negsf2 _arm_muldivsf3 _arm_cmpsf2 _arm_unordsf2 \

    22 +	_arm_fixsfsi _arm_fixunssfsi

    23  

    24  # MULTILIB_OPTIONS = mhard-float/msoft-float

    25  # MULTILIB_DIRNAMES = hard-float soft-float

    26 Index: gcc-4.4.0/gcc/config/arm/linux-elf.h

    27 ===================================================================

    28 --- gcc-4.4.0.orig/gcc/config/arm/linux-elf.h

    29 +++ gcc-4.4.0/gcc/config/arm/linux-elf.h

    30 @@ -60,7 +60,7 @@

    31     %{shared:-lc} \

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

    33  

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

    35 +#define LIBGCC_SPEC "-lgcc"

    36  

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

    38
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