1 /*
2 * Raw syscalls.
3 *
4 * Copyright (c) 2018 The strace developers.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #ifndef STRACE_RAW_SYSCALL_H
31 #define STRACE_RAW_SYSCALL_H
32
33 # include "kernel_types.h"
34
35 static inline kernel_ulong_t
raw_syscall_0(const kernel_ulong_t nr,kernel_ulong_t * err)36 raw_syscall_0(const kernel_ulong_t nr, kernel_ulong_t *err)
37 {
38 register kernel_ulong_t r15 __asm__("r15") = nr;
39 register kernel_ulong_t r8 __asm__("r8");
40 register kernel_ulong_t r10 __asm__("r10");
41 __asm__ __volatile__("break 0x100000"
42 : "=r"(r8), "=r"(r10), "+r"(r15)
43 :
44 : "memory", "out0", "out1", "out2",
45 "out3", "out4", "out5", "out6", "out7",
46 "r2", "r3", "r9", "r11", "r12", "r13",
47 "r14", "r16", "r17", "r18", "r19", "r20",
48 "r21", "r22", "r23", "r24", "r25", "r26",
49 "r27", "r28", "r29", "r30", "r31",
50 "p6", "p7", "p8", "p9", "p10",
51 "p11", "p12", "p13", "p14", "p15",
52 "f6", "f7", "f8", "f9", "f10",
53 "f11", "f12", "f13", "f14", "f15",
54 "f5", "f6", "f7", "f8", "f9", "f10", "f11",
55 "b6", "b7");
56 *err = !!r10;
57 return r8;
58 }
59 # define raw_syscall_0 raw_syscall_0
60
61 #endif /* !STRACE_RAW_SYSCALL_H */
62