diff options
| author | James Hogan <james.hogan@imgtec.com> | 2012-10-09 10:54:51 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2013-03-02 20:09:49 +0000 |
| commit | 26025bbfbba33a9425be1b89eccb4664ea4c17b6 (patch) | |
| tree | f8a7f754525812c4d758b638d9bcade297af67da /arch/metag/include/uapi | |
| parent | 5698c50d9da4ab2f57d98c64ea97675dcaf2a608 (diff) | |
metag: System Calls
Add metag system call and gateway page interfaces. The metag
architecture port uses the generic system call numbers from
asm-generic/unistd.h, as well as a user gateway page mapped at
0x6ffff000 which contains fast atomic primitives (depending on SMP) and
a fast method of accessing TLS data.
System calls use the SWITCH instruction with the immediate 0x440001 to
signal a system call.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Diffstat (limited to 'arch/metag/include/uapi')
| -rw-r--r-- | arch/metag/include/uapi/asm/unistd.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/metag/include/uapi/asm/unistd.h b/arch/metag/include/uapi/asm/unistd.h new file mode 100644 index 00000000000..b80b8e899d2 --- /dev/null +++ b/arch/metag/include/uapi/asm/unistd.h @@ -0,0 +1,21 @@ +/* + * Copyright (C) 2012 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +/* Use the standard ABI for syscalls. */ +#include <asm-generic/unistd.h> + +/* metag-specific syscalls. */ +#define __NR_metag_setglobalbit (__NR_arch_specific_syscall + 1) +__SYSCALL(__NR_metag_setglobalbit, sys_metag_setglobalbit) +#define __NR_metag_set_fpu_flags (__NR_arch_specific_syscall + 2) +__SYSCALL(__NR_metag_set_fpu_flags, sys_metag_set_fpu_flags) +#define __NR_metag_set_tls (__NR_arch_specific_syscall + 3) +__SYSCALL(__NR_metag_set_tls, sys_metag_set_tls) +#define __NR_metag_get_tls (__NR_arch_specific_syscall + 4) +__SYSCALL(__NR_metag_get_tls, sys_metag_get_tls) |