patches/gcc/4.3.3/310-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>
yann@1162
     1
Original patch from: ../4.3.2/310-arm-softfloat.patch
yann@1162
     2
yann@1162
     3
-= BEGIN original header =-
yann@1162
     4
-= END original header =-
yann@1162
     5
yann@1162
     6
diff -durN gcc-4.3.3.orig/gcc/config/arm/linux-elf.h gcc-4.3.3/gcc/config/arm/linux-elf.h
yann@1162
     7
--- gcc-4.3.3.orig/gcc/config/arm/linux-elf.h	2007-11-08 14:44:09.000000000 +0100
yann@1162
     8
+++ gcc-4.3.3/gcc/config/arm/linux-elf.h	2009-01-27 22:25:47.000000000 +0100
yann@1162
     9
@@ -60,7 +60,7 @@
yann@1162
    10
    %{shared:-lc} \
yann@1162
    11
    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
yann@1162
    12
 
yann@1162
    13
-#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
yann@1162
    14
+#define LIBGCC_SPEC "-lgcc"
yann@1162
    15
 
yann@1162
    16
 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
yann@1162
    17
 
yann@1162
    18
diff -durN gcc-4.3.3.orig/gcc/config/arm/t-linux gcc-4.3.3/gcc/config/arm/t-linux
yann@1162
    19
--- gcc-4.3.3.orig/gcc/config/arm/t-linux	2006-11-09 23:14:27.000000000 +0100
yann@1162
    20
+++ gcc-4.3.3/gcc/config/arm/t-linux	2009-01-27 22:25:47.000000000 +0100
yann@1162
    21
@@ -3,7 +3,12 @@
yann@1162
    22
 TARGET_LIBGCC2_CFLAGS = -fomit-frame-pointer -fPIC
yann@1162
    23
 
yann@1162
    24
 LIB1ASMSRC = arm/lib1funcs.asm
yann@1162
    25
-LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_lnx
yann@1162
    26
+LIB1ASMFUNCS = _udivsi3 _divsi3 _umodsi3 _modsi3 _dvmd_tls _bb_init_func \
yann@1162
    27
+	_call_via_rX _interwork_call_via_rX \
yann@1162
    28
+	_lshrdi3 _ashrdi3 _ashldi3 \
yann@1162
    29
+	_negdf2 _addsubdf3 _muldivdf3 _cmpdf2 _unorddf2 _fixdfsi _fixunsdfsi \
yann@1162
    30
+	_truncdfsf2 _negsf2 _addsubsf3 _muldivsf3 _cmpsf2 _unordsf2 \
yann@1162
    31
+	_fixsfsi _fixunssfsi _floatdidf _floatdisf _floatundidf _floatundisf
yann@1162
    32
 
yann@1162
    33
 # MULTILIB_OPTIONS = mhard-float/msoft-float
yann@1162
    34
 # MULTILIB_DIRNAMES = hard-float soft-float