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44 lines
1.3 KiB
ArmAsm
44 lines
1.3 KiB
ArmAsm
/* Copyright (C) 2000-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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ENTRY (__syscall)
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mov r4, r3 // syscall number
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mov r5, r4 // p1
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mov r6, r5 // p2
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mov r7, r6 // p3
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mov.l @r15, r7 // p4
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mov.l @(4,r15), r0 // p5
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mov.l @(8,r15), r1 // p6
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mov.l @(12,r15), r2 // p7
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trapa #0x17
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mov r0, r1
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mov #-12, r2
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shad r2, r1
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not r1, r1 // r1=0 means r0 = -1 to -4095
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tst r1, r1 // i.e. error in linux
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bf .Lpseudo_end
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SYSCALL_ERROR_HANDLER
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.Lpseudo_end:
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rts
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nop
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PSEUDO_END (__syscall)
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weak_alias (__syscall, syscall)
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