diff options
author | Andrew Turner <andrew@FreeBSD.org> | 2024-02-28 16:09:17 +0000 |
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committer | Andrew Turner <andrew@FreeBSD.org> | 2024-03-21 10:13:24 +0000 |
commit | fd6b1cc34e4175c1e223f42540debb74cfe3c3e6 (patch) | |
tree | 2b940f2b1c7e20a1c6def200fe5d5e5b4a8241ca /lib | |
parent | 7e6437c08415ade75403f1ecad75167257e8ea3c (diff) | |
download | src-fd6b1cc34e4175c1e223f42540debb74cfe3c3e6.tar.gz src-fd6b1cc34e4175c1e223f42540debb74cfe3c3e6.zip |
libc/aarch64: Copy the trivial getcontextx
This will be used as the base of a non-trivial implementation.
Reviewed by: kib
Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D44254
Diffstat (limited to 'lib')
-rw-r--r-- | lib/libc/aarch64/gen/Makefile.inc | 4 | ||||
-rw-r--r-- | lib/libc/aarch64/gen/getcontextx.c | 73 |
2 files changed, 75 insertions, 2 deletions
diff --git a/lib/libc/aarch64/gen/Makefile.inc b/lib/libc/aarch64/gen/Makefile.inc index 5e4fccf143e4..4f4fb3d199bf 100644 --- a/lib/libc/aarch64/gen/Makefile.inc +++ b/lib/libc/aarch64/gen/Makefile.inc @@ -6,10 +6,10 @@ SRCS+= _ctx_start.S \ flt_rounds.c \ fpgetmask.c \ fpsetmask.c \ + getcontextx.c \ infinity.c \ ldexp.c \ makecontext.c \ _setjmp.S \ setjmp.S \ - sigsetjmp.S \ - trivial-getcontextx.c + sigsetjmp.S diff --git a/lib/libc/aarch64/gen/getcontextx.c b/lib/libc/aarch64/gen/getcontextx.c new file mode 100644 index 000000000000..b9d4522d96ee --- /dev/null +++ b/lib/libc/aarch64/gen/getcontextx.c @@ -0,0 +1,73 @@ +/* + * Copyright (c) 2011 Konstantin Belousov <kib@FreeBSD.org> + * 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 ``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 <sys/types.h> +#include <sys/ucontext.h> +#include <errno.h> +#include <stdlib.h> + +int +__getcontextx_size(void) +{ + + return (sizeof(ucontext_t)); +} + +int +__fillcontextx2(char *ctx) +{ + + return (0); +} + +int +__fillcontextx(char *ctx) +{ + ucontext_t *ucp; + + ucp = (ucontext_t *)ctx; + return (getcontext(ucp)); +} + +__weak_reference(__getcontextx, getcontextx); + +ucontext_t * +__getcontextx(void) +{ + char *ctx; + int error; + + ctx = malloc(__getcontextx_size()); + if (ctx == NULL) + return (NULL); + if (__fillcontextx(ctx) == -1) { + error = errno; + free(ctx); + errno = error; + return (NULL); + } + return ((ucontext_t *)ctx); +} |