diff options
| author | br <br@FreeBSD.org> | 2016-01-17 15:21:23 +0000 |
|---|---|---|
| committer | br <br@FreeBSD.org> | 2016-01-17 15:21:23 +0000 |
| commit | e0daa8fb6535861d32643e7056fb5025d04e772e (patch) | |
| tree | dc2c17b47c2052a9bdd63857fff9be0a1be00232 /lib/libc/riscv/gen/_ctx_start.S | |
| parent | 7d0828c94e6533f7d0d139b0242cf16e417eab8b (diff) | |
| download | FreeBSD-src-e0daa8fb6535861d32643e7056fb5025d04e772e.zip FreeBSD-src-e0daa8fb6535861d32643e7056fb5025d04e772e.tar.gz | |
Bring in initial libc and libstand support for RISC-V.
Reviewed by: andrew, emaste, kib
Sponsored by: DARPA, AFRL
Sponsored by: HEIF5
Differential Revision: https://reviews.freebsd.org/D4943
Diffstat (limited to 'lib/libc/riscv/gen/_ctx_start.S')
| -rw-r--r-- | lib/libc/riscv/gen/_ctx_start.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/lib/libc/riscv/gen/_ctx_start.S b/lib/libc/riscv/gen/_ctx_start.S new file mode 100644 index 0000000..cda5397 --- /dev/null +++ b/lib/libc/riscv/gen/_ctx_start.S @@ -0,0 +1,43 @@ +/*- + * Copyright (c) 2015 Ruslan Bukin <br@bsdpad.com> + * All rights reserved. + * + * Portions of this software were developed by SRI International and the + * University of Cambridge Computer Laboratory under DARPA/AFRL contract + * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. + * + * Portions of this software were developed by the University of Cambridge + * Computer Laboratory as part of the CTSRD Project, with support from the + * UK Higher Education Innovation Fund (HEIF). + * + * 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 <machine/asm.h> +__FBSDID("$FreeBSD$"); + +ENTRY(_ctx_start) + jalr s0 /* Call func from makecontext */ + mv a0, s1 /* Load ucp saved in makecontext */ + call _C_LABEL(ctx_done) + call _C_LABEL(abort) +END(_ctx_start) |
