9676aeef0d
START_FUNC: New macro.
END_FUNC: New macro.
exit, isatty, getpid, sc2: Use the new macros.
87 lines
1.9 KiB
ArmAsm
87 lines
1.9 KiB
ArmAsm
/* Copyright (c) 2012, 2013 Red Hat, Inc. All rights reserved.
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This copyrighted material is made available to anyone wishing to use, modify,
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copy, or redistribute it subject to the terms and conditions of the BSD
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License. This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
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is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
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are incorporated in the source code or documentation are not subject to the BSD
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License and may only be used or replicated with the express permission of
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Red Hat, Inc.
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*/
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/* Empty syscall definitions for when we run on real hardware. */
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#include "../syscall.h"
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#include "memmodel.h"
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#define ENOSYS 88
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.macro sc,a
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sc2 \a,\a
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.endm
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.macro START_FUNC name1, name2=foo
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.pushsection .text.\name1,"ax",@progbits
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.p2align 1
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.weak \name1
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.global \name1
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\name1:
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.ifnc \name2,foo
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.weak \name2
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.global \name2
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\name2:
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.endif
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.endm
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.macro END_FUNC name1, name2=foo
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.type \name1 , @function
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.size \name1 , . - \name1
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.ifnc \name2,foo
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.type \name2 , @function
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.size \name2 , . - \name2
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.endif
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.popsection
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.endm
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START_FUNC exit, _exit
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/* For some reason, the board fails to stop at a breakpoint
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placed on top of a software breakpoint instruction. */
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/* MOV.B #0,R3 ; this is a software breakpoint instruction */
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1: br_ #1b
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END_FUNC exit, _exit
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START_FUNC isatty,_isatty
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MOV #1,R12
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ret_
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END_FUNC isatty,_isatty
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START_FUNC getpid
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MOV #42,R12
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ret_
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END_FUNC getpid
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.macro sc2,name,num
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START_FUNC \name
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call_ #__errno
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movx_ #ENOSYS, @R12
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MOV.W #-1,R12
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ret_
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END_FUNC \name
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.endm
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#define SC(n) sc2 n,SYS_##n
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SC (open)
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SC (close)
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SC (read)
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/* SC (write)*/
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SC (fstat)
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SC (lseek)
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SC (kill)
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