From 22686a1383c4a4a319eaaa6b16b1a9540114bd66 Mon Sep 17 00:00:00 2001 From: Markos Chandras Date: Tue, 5 Feb 2008 14:51:48 +0000 Subject: 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 Signed-off-by: Bernhard Reutner-Fischer --- libc/sysdeps/linux/metag/syscall.c | 40 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 libc/sysdeps/linux/metag/syscall.c (limited to 'libc/sysdeps/linux/metag/syscall.c') 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 +#include +#include +#include + +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; +} -- cgit v1.2.3