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gerrit.omnirom.org / android_bionic / 1f62be3dcf95f92ae7a069727e70a4f07e91f23f / . / libc / arch-mips64 / bionic / syscall.S
blob: ce5dfd361b833c7c99f44570f89ab9088ae0ba22 [file] [log] [blame]
Raghu Gandham405b8022012-07-25 18:16:42 -0700[diff] [blame]1/*
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]2 * Copyright (C) 2013 The Android Open Source Project
Raghu Gandham405b8022012-07-25 18:16:42 -0700[diff] [blame]3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * * Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
Raghu Gandham405b8022012-07-25 18:16:42 -0700[diff] [blame]28
Elliott Hughes851e68a2014-02-19 16:53:20 -0800[diff] [blame]29#include <private/bionic_asm.h>
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]30
31#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
32FRAMESZ = MKFSIZ(6,0)
33#else
34FRAMESZ = MKFSIZ(0,1)
35FRAME_GP = FRAMESZ-1*REGSZ
36#endif
37
38LEAF(syscall,FRAMESZ)
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]39 PTR_SUBU $sp, FRAMESZ # allocate stack frame
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]40 SETUP_GP64(FRAME_GP,syscall)
41 SAVE_GP(FRAME_GP)
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]42 move $v0, $a0 # syscall number to v0
43 move $a0, $a1 # shift args down
44 move $a1, $a2
45 move $a2, $a3
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]46#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]47 REG_L $a3, FRAMESZ+4*REGSZ($sp)
48 REG_L $t0, FRAMESZ+5*REGSZ($sp)
49 REG_L $t1, FRAMESZ+6*REGSZ($sp)
50 REG_S $t0, 4*REGSZ($sp)
51 REG_S $t1, 5*REGSZ($sp)
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]52#else
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]53 move $a3, $a4
54 move $a4, $a5
55 move $a5, $a6
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]56#endif
57 syscall
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]58 move $a0, $v0
59 bnez $a3, 1f
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]60 RESTORE_GP64
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]61 PTR_ADDU $sp, FRAMESZ
62 j $ra
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]631:
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]64 LA $t9,__set_errno_internal
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]65 RESTORE_GP64
Elliott Hughesab413c52017-10-13 13:22:24 -0700[diff] [blame]66 PTR_ADDU $sp, FRAMESZ
67 j $t9
Chris Dearman645d0312014-02-05 18:51:43 -0800[diff] [blame]68 END(syscall)