93 lines
2.4 KiB
ArmAsm
93 lines
2.4 KiB
ArmAsm
/* Generic simplistic start-up-stub for CRIS/CRISv32.
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Copyright (C) 1993-2005, 2007, 2017 Axis Communications.
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All rights reserved.
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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. Neither the name of Axis Communications nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS
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COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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#include "newlib.h"
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#undef cris
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#undef L
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#ifdef __NO_UNDERSCORES__
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#define L(x) x
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#else
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#define L(x) _ ## x
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#endif
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#ifdef HAVE_INITFINI_ARRAY
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#define _init __libc_init_array
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#define _fini __libc_fini_array
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#endif
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; Rudimentary v0..v32-compatible startup stub.
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#ifdef __ELF__
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.section .startup,"ax"
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#endif
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.global __start
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nop
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__start:
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move.d 0f,$r9
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jump $r9
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setf
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#ifndef __ELF__
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; For a.out, everything read-only and code-wise goes into a
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; single section, so we can't separate the interrupt table from
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; the startup code if we want to have files in-between.
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#define IN_CRT0
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#include "irqtable.S"
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#else
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; The interrupt table (at offset 12, irq #3) is expected here.
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; The simplest way to make sure we link it in, is to sacrifice
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; some memory and refer to it with a relocation.
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.text
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.dword __irqtable_at_irq3
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#endif /* __ELF__ */
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0:
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move.d __setup,$r9
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jsr $r9
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nop
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#ifdef __ELF__
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jsr L(_init)
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nop
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move.d L(_fini),$r10
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jsr L(atexit)
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nop
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#endif
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jsr L(main)
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nop
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jsr L(exit)
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nop
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0:
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nop
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ba 0b
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nop
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