diff options
author | Markos Chandras <markos.chandras@imgtec.com> | 2008-02-05 14:51:48 +0000 |
---|---|---|
committer | Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> | 2013-03-14 22:45:15 +0100 |
commit | 22686a1383c4a4a319eaaa6b16b1a9540114bd66 (patch) | |
tree | 04e12086f9187c150ba6a33db0368b9903e50363 /libc/sysdeps/linux/metag/syscall.c | |
parent | 37439e66a31f251eba39604885f57099a43d943d (diff) |
Add support for the Meta architecture
Meta cores are 32-bit, hardware multithreaded, general purpose, embedded
processors which also feature a DSP instruction set, and can be found in
many digital radios. They are capable of running different operating
systems on different hardware threads, for example a digital radio might
run RTOSes for DAB decoding and audio decoding on 3 hardware threads,
and run Linux on the 4th hardware thread to manage the user interface,
networking etc. HTPs are also capable of running SMP Linux on multiple
hardware threads.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/metag/syscall.c')
-rw-r--r-- | libc/sysdeps/linux/metag/syscall.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/metag/syscall.c b/libc/sysdeps/linux/metag/syscall.c new file mode 100644 index 000000000..93aabf3e0 --- /dev/null +++ b/libc/sysdeps/linux/metag/syscall.c @@ -0,0 +1,40 @@ +/* syscall for META/uClibc + * + * Copyright (C) 2013 Imagination Technologies + * + * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball. + */ + +#include <features.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/syscall.h> + +long syscall(long sysnum, + long arg1, long arg2, long arg3, + long arg4, long arg5, long arg6) +{ + + register long __call __asm__ ("D1Re0") = sysnum; + register long __res __asm__ ("D0Re0"); + register long __a __asm__ ("D1Ar1") = arg1; + register long __b __asm__ ("D0Ar2") = arg2; + register long __c __asm__ ("D1Ar3") = arg3; + register long __d __asm__ ("D0Ar4") = arg4; + register long __e __asm__ ("D1Ar5") = arg5; + register long __f __asm__ ("D0Ar6") = arg6; + + + __asm__ __volatile__ ("SWITCH #0x440001" + : "=d" (__res) + : "d" (__call), "d" (__a), "d" (__b), + "d" (__c), "d" (__d), "d" (__e) , "d" (__f) + : "memory"); + + if(__res >= (unsigned long) -4095) { + long err = __res; + (*__errno_location()) = (-err); + __res = (unsigned long) -1; + } + return (long) __res; +} |