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jeremybenn |
/* Default interrupt table for CRIS/CRISv32.
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Copyright (C) 2007 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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#ifdef __ELF__
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.section .startup,"ax"
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#else
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.text
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#endif
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#if defined (__ELF__) || defined (IN_CRT0)
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; This is included from crt0.S for a.out, as we can't have it as
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; a separate object file in a library due to the lack of named
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; section support and the required placement at address 3*4.
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; We define an interrupt table with references to the symbols
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; _.irq_XX where XX are hex numbers 3..ff (lower-case). They
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; are satisfied by weak aliases to the _.irq stub function in
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; this file. When overridden, the overriding function must be
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; in code explicitly linked in, i.e. *not* in a library.
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.global __irqtable_at_irq3
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__irqtable_at_irq3:
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.irpc irqno,3456789abcdef
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.weak _.irq_0\irqno
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.set _.irq_0\irqno,_.irq
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.dword _.irq_0\irqno
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.endr
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.irpc irqhd,123456789abcdef
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.irpc irqld,0123456789abcdef
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.weak _.irq_\irqhd\irqld
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.set _.irq_\irqhd\irqld,_.irq
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.dword _.irq_\irqhd\irqld
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.endr
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.endr
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; No use having a separate file with default _.irq_[0-f][0-f]
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; definitions; just provide a single stub with a weak definition
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; and make it up to the user to provide a strong definition that
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; they force to be linked in (i.e. not in a library or at least
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; together with another symbol they know is linked in).
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.text
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_.irq:
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#ifdef __arch_common_v10_v32
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; This is just to allow the multilib to compile without
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; hackery: the "common" subset doesn't recognize
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; interrupt-return insns.
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#elif __CRIS_arch_version >= 32
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rete
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rfe
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#else
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reti
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nop
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#endif
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#endif /* __ELF__ || IN_CRT0 */
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