diff --git a/lib/libthr/arch/arm/Makefile.inc b/lib/libthr/arch/arm/Makefile.inc new file mode 100644 --- /dev/null +++ b/lib/libthr/arch/arm/Makefile.inc @@ -0,0 +1,3 @@ +.PATH: ${.CURDIR}/arch/arm +SRCS+= \ + thr_rtld_arm.c diff --git a/lib/libthr/arch/arm/thr_rtld_arm.c b/lib/libthr/arch/arm/thr_rtld_arm.c new file mode 100644 --- /dev/null +++ b/lib/libthr/arch/arm/thr_rtld_arm.c @@ -0,0 +1,66 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2024, Michal Meloun + * + * 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 unmodified, 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 ``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 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 +#include + +#include "thr_private.h" + +static char tmp[2]; + +int __aeabi_idiv(int , int ); +unsigned __aeabi_uidiv(unsigned, unsigned ); + +struct {int q; int r;} __aeabi_idivmod(int, int ); +struct {unsigned q; unsigned r;} __aeabi_uidivmod(unsigned, unsigned); + +struct {int64_t q; int64_t r;} __aeabi_ldivmod(int64_t, int64_t); +struct {uint64_t q; uint64_t r;} __aeabi_uldivmod(uint64_t, uint64_t); + +void __aeabi_memset(void *dest, size_t n, int c); +void __aeabi_memclr(void *dest, size_t n); +void __aeabi_memmove(void *dest, void *src, size_t n); +void __aeabi_memcpy(void *dest, void *src, size_t n); + +void +_thr_resolve_eabi(void) +{ + + __aeabi_idiv(1, 1); + __aeabi_uidiv(1, 1); + + __aeabi_idivmod(1, 1); + __aeabi_uidivmod(1, 1); + + __aeabi_ldivmod(1, 1); + __aeabi_uldivmod(1, 1); + + __aeabi_memset(tmp, 1, 0); + __aeabi_memclr(tmp, 1); + __aeabi_memmove(tmp, tmp + 1, 1); + __aeabi_memcpy(tmp, tmp + 1, 1); +} diff --git a/lib/libthr/thread/thr_private.h b/lib/libthr/thread/thr_private.h --- a/lib/libthr/thread/thr_private.h +++ b/lib/libthr/thread/thr_private.h @@ -1103,6 +1103,7 @@ bool __thr_get_main_stack_base(char **base); bool __thr_get_main_stack_lim(size_t *lim); int _Tthr_sigqueue(pthread_t pthread, int sig, const union sigval value); +void _thr_resolve_eabi(void); __END_DECLS __NULLABILITY_PRAGMA_POP diff --git a/lib/libthr/thread/thr_rtld.c b/lib/libthr/thread/thr_rtld.c --- a/lib/libthr/thread/thr_rtld.c +++ b/lib/libthr/thread/thr_rtld.c @@ -214,6 +214,12 @@ return (&curthread->dlerror_seen); } +void __weak_symbol +_thr_resolve_eabi(void) +{ + +} + void _thr_rtld_init(void) { @@ -276,6 +282,9 @@ _thr_signal_block_check_fast(); _thr_signal_block_setup(curthread); + /* resolve __eabi_ functions, if any */ + _thr_resolve_eabi(); + uc_len = __getcontextx_size(); uc = alloca(uc_len); getcontext(uc);