53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
/*
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* Raw syscalls.
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*
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* Copyright (c) 2018 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STRACE_RAW_SYSCALL_H
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#define STRACE_RAW_SYSCALL_H
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# include "kernel_types.h"
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static inline kernel_ulong_t
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raw_syscall_0(const kernel_ulong_t nr, kernel_ulong_t *err)
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{
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register kernel_ulong_t r0 __asm__("r0") = nr;
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register kernel_ulong_t r3 __asm__("r3");
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__asm__ __volatile__("sc\n\t"
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"mfcr %0"
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: "+r"(r0), "=r"(r3)
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:
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: "memory", "cr0", "ctr", "lr",
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"r4", "r5", "r6", "r7", "r8",
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"r9", "r10", "r11", "r12");
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*err = !!(r0 & 0x10000000);
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return r3;
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}
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# define raw_syscall_0 raw_syscall_0
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#endif /* !STRACE_RAW_SYSCALL_H */
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