diff --git a/lib/libc/arm/aeabi/Makefile.inc b/lib/libc/arm/aeabi/Makefile.inc index 44ed2c696f4f..25f76ab099da 100644 --- a/lib/libc/arm/aeabi/Makefile.inc +++ b/lib/libc/arm/aeabi/Makefile.inc @@ -28,5 +28,6 @@ SRCS+= aeabi_memcmp.S \ aeabi_memmove.S \ aeabi_memset.S -SYM_MAPS+=${LIBC_SRCTOP}/arm/aeabi/Symbol.map +SRCS+= aeabi_int_div.S +SYM_MAPS+=${LIBC_SRCTOP}/arm/aeabi/Symbol.map diff --git a/lib/libc/arm/aeabi/Symbol.map b/lib/libc/arm/aeabi/Symbol.map index 1aff92912434..4a08d31d601b 100644 --- a/lib/libc/arm/aeabi/Symbol.map +++ b/lib/libc/arm/aeabi/Symbol.map @@ -69,4 +69,11 @@ FBSDprivate_1.0 { __aeabi_memset; __aeabi_memset4; __aeabi_memset8; + + /* + * A workaround for DEFINE_AEABI_FUNCTION_ALIAS() bug. + * - see aeabi_int_div.S + */ + __aeabi_idiv; + __aeabi_uidiv; }; diff --git a/lib/libc/arm/aeabi/aeabi_int_div.S b/lib/libc/arm/aeabi/aeabi_int_div.S new file mode 100644 index 000000000000..41f5c123b1e4 --- /dev/null +++ b/lib/libc/arm/aeabi/aeabi_int_div.S @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2017 Michal Meloun + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#include +__FBSDID("$FreeBSD$"); + +/* + * Due to bug in libcompiler_rt, all symbols declared by + * DEFINE_AEABI_FUNCTION_ALIAS() are not hidden. All these but + * __aeabi_uidiv_compat and/or __aeabi_idiv_compat are explicitly + * exported from libc and don't causes problems. + * + * As workaround, export these from libc as compatible symbols, + * in global namespace + */ + +ENTRY(__aeabi_uidiv_compat) + .symver __aeabi_uidiv_compat, __aeabi_uidiv@ + b __udivsi3 +END(__aeabi_uidiv_compat) + +ENTRY(__aeabi_idiv_compat) + .symver __aeabi_idiv_compat, __aeabi_idiv@ + b __divsi3 +END(__aeabi_idiv_compat) + + .section .note.GNU-stack,"",%progbits