diff options
| author | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-10-27 01:11:40 +0000 |
|---|---|---|
| committer | nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2009-10-27 01:11:40 +0000 |
| commit | a6257782ac7c3b9ada77662b3190c0255c913324 (patch) | |
| tree | 4e072f04e8e274a2ab671134c06199cea52d8a57 | |
| parent | 94780e82b867e9ff2400eb9c7b7d7f82bad693f2 (diff) | |
uClibc: implement copysignl in libc on powerpc to avoid undefined references in libstdc++
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18178 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | toolchain/uClibc/patches-0.9.30.1/450-powerpc_copysignl.patch | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/toolchain/uClibc/patches-0.9.30.1/450-powerpc_copysignl.patch b/toolchain/uClibc/patches-0.9.30.1/450-powerpc_copysignl.patch new file mode 100644 index 000000000..2bdf1f34c --- /dev/null +++ b/toolchain/uClibc/patches-0.9.30.1/450-powerpc_copysignl.patch @@ -0,0 +1,103 @@ +--- a/libc/sysdeps/linux/powerpc/Makefile.arch ++++ b/libc/sysdeps/linux/powerpc/Makefile.arch +@@ -5,7 +5,7 @@ + # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + # + +-CSRC := __syscall_error.c pread_write.c ioctl.c ++CSRC := __syscall_error.c pread_write.c ioctl.c copysignl.c + + SSRC := \ + __longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S \ +--- /dev/null ++++ b/libc/sysdeps/linux/powerpc/copysignl.c +@@ -0,0 +1,89 @@ ++/* s_copysignl.c -- long double version of s_copysign.c. ++ * Conversion to long double by Ulrich Drepper, ++ * Cygnus Support, drepper@cygnus.com. ++ */ ++ ++/* ++ * ==================================================== ++ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. ++ * ++ * Developed at SunPro, a Sun Microsystems, Inc. business. ++ * Permission to use, copy, modify, and distribute this ++ * software is freely granted, provided that this notice ++ * is preserved. ++ * ==================================================== ++ */ ++ ++/* ++ * copysignl(long double x, long double y) ++ * copysignl(x,y) returns a value with the magnitude of x and ++ * with the sign bit of y. ++ */ ++ ++#include <endian.h> ++#include <stdint.h> ++ ++#if __FLOAT_WORD_ORDER == BIG_ENDIAN ++ ++typedef union ++{ ++ long double value; ++ struct ++ { ++ int sign_exponent:16; ++ unsigned int empty:16; ++ uint32_t msw; ++ uint32_t lsw; ++ } parts; ++} ieee_long_double_shape_type; ++ ++#endif ++ ++#if __FLOAT_WORD_ORDER == LITTLE_ENDIAN ++ ++typedef union ++{ ++ long double value; ++ struct ++ { ++ uint32_t lsw; ++ uint32_t msw; ++ int sign_exponent:16; ++ unsigned int empty:16; ++ } parts; ++} ieee_long_double_shape_type; ++ ++#endif ++ ++/* Get int from the exponent of a long double. */ ++ ++#define GET_LDOUBLE_EXP(exp,d) \ ++do { \ ++ ieee_long_double_shape_type ge_u; \ ++ ge_u.value = (d); \ ++ (exp) = ge_u.parts.sign_exponent; \ ++} while (0) ++ ++/* Set exponent of a long double from an int. */ ++ ++#define SET_LDOUBLE_EXP(d,exp) \ ++do { \ ++ ieee_long_double_shape_type se_u; \ ++ se_u.value = (d); \ ++ se_u.parts.sign_exponent = (exp); \ ++ (d) = se_u.value; \ ++} while (0) ++ ++long double copysignl(long double x, long double y); ++libc_hidden_proto(copysignl); ++ ++long double copysignl(long double x, long double y) ++{ ++ uint32_t es1,es2; ++ GET_LDOUBLE_EXP(es1,x); ++ GET_LDOUBLE_EXP(es2,y); ++ SET_LDOUBLE_EXP(x,(es1&0x7fff)|(es2&0x8000)); ++ return x; ++} ++ ++libc_hidden_def(copysignl); |