diff options
| author | Yann Sionneau <ysionneau@kalray.eu> | 2020-10-02 16:24:55 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2020-10-02 19:10:36 +0200 |
| commit | 672a303852353ba9299f6f50190fca8b3abe4c1d (patch) | |
| tree | f204ea8dc0b5a3e4b2bd4251b8daf5f0783ae260 /libc/sysdeps/linux/kvx/vfork.S | |
| parent | 4acf6f072cbc255b0b0d6cfd598a100f95d84f2a (diff) | |
kvx: add support for kvx arch to uClibc-ng
This commit adds support for Kalray VLIW family (kvx)
Kalray kv3 core is embedded in Kalray Coolidge SoC. This core which is the
third of the KV family has the following features:
32/64 bits execution mode
6-issue VLIW architecture
64 x 64bits general purpose registers
SIMD instructions
little-endian
In order to build a usable toolchain, build scripts are provided at the
following address: https://github.com/kalray/build-scripts.
Kalray uses FOSS which is available at https://github.com/kalray
This includes Linux kernel, uClibc-ng, gcc, binutils, etc.
Signed-off-by: Clément Léger <cleger@kalray.eu>
Signed-off-by: Guillaume Thouvenin <gthouvenin@kalray.eu>
Signed-off-by: Laurent Thevenoux <lthevenoux@kalray.eu>
Signed-off-by: Marc Poulhies <mpoulhies@kalray.eu>
Signed-off-by: Marius Gligor <mgligor@kalray.eu>
Signed-off-by: Yann Sionneau <ysionneau@kalray.eu>
Diffstat (limited to 'libc/sysdeps/linux/kvx/vfork.S')
| -rw-r--r-- | libc/sysdeps/linux/kvx/vfork.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/kvx/vfork.S b/libc/sysdeps/linux/kvx/vfork.S new file mode 100644 index 000000000..7c6a17133 --- /dev/null +++ b/libc/sysdeps/linux/kvx/vfork.S @@ -0,0 +1,47 @@ +/* + * This file is subject to the terms and conditions of the LGPL V2.1 + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2018 Kalray Inc. + */ + +#include <sys/syscall.h> +#include <sysdep.h> + +/* We do not want COMPAT to be enabled in our kernel, hence vfork + * is not available. Use clone to do the same job with appropriate flags */ +#define _SIGNAL_H +#include <bits/signum.h> /* For SIGCHLD */ + +#define CLONE_VM 0x00000100 +#define CLONE_VFORK 0x00004000 +#define CLONE_FLAGS_FOR_VFORK (CLONE_VM|CLONE_VFORK|SIGCHLD) + +ENTRY(__vfork) + make $r0 = CLONE_FLAGS_FOR_VFORK + /* Not sure if needed to zero-out other parameters but better + * be safe than sorry */ + make $r1 = 0 + make $r2 = 0 + ;; + make $r3 = 0 + make $r4 = 0 + ;; + scall SYS_ify(clone) + ;; + /* If PID < 0 then it's an error, else, simply return */ + cb.dltz $r0 ? err + ;; + ret + ;; +L(err): + goto __syscall_error + ;; + /* Never return */ + errop + ;; +END(__vfork) + +weak_alias(__vfork,vfork) +libc_hidden_def(vfork) |