| 1 | /* Default interrupt table for CRIS/CRISv32. |
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| 2 | Copyright (C) 2007 Axis Communications. |
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| 3 | All rights reserved. |
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| 4 | |
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| 5 | Redistribution and use in source and binary forms, with or without |
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| 6 | modification, are permitted provided that the following conditions |
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| 7 | are met: |
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| 8 | |
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| 9 | 1. Redistributions of source code must retain the above copyright |
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| 10 | notice, this list of conditions and the following disclaimer. |
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| 11 | |
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| 12 | 2. Neither the name of Axis Communications nor the names of its |
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| 13 | contributors may be used to endorse or promote products derived |
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| 14 | from this software without specific prior written permission. |
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| 15 | |
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| 16 | THIS SOFTWARE IS PROVIDED BY AXIS COMMUNICATIONS AND ITS CONTRIBUTORS |
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| 17 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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| 18 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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| 19 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AXIS |
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| 20 | COMMUNICATIONS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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| 21 | INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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| 22 | (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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| 23 | SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 24 | HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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| 25 | STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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| 26 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 27 | POSSIBILITY OF SUCH DAMAGE. */ |
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| 28 | |
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| 29 | #ifdef __ELF__ |
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| 30 | .section .startup,"ax" |
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| 31 | #else |
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| 32 | .text |
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| 33 | #endif |
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| 34 | |
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| 35 | #if defined (__ELF__) || defined (IN_CRT0) |
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| 36 | ; This is included from crt0.S for a.out, as we can't have it as |
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| 37 | ; a separate object file in a library due to the lack of named |
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| 38 | ; section support and the required placement at address 3*4. |
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| 39 | |
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| 40 | ; We define an interrupt table with references to the symbols |
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| 41 | ; _.irq_XX where XX are hex numbers 3..ff (lower-case). They |
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| 42 | ; are satisfied by weak aliases to the _.irq stub function in |
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| 43 | ; this file. When overridden, the overriding function must be |
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| 44 | ; in code explicitly linked in, i.e. *not* in a library. |
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| 45 | |
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| 46 | .global __irqtable_at_irq3 |
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| 47 | __irqtable_at_irq3: |
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| 48 | |
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| 49 | .irpc irqno,3456789abcdef |
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| 50 | .weak _.irq_0\irqno |
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| 51 | .set _.irq_0\irqno,_.irq |
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| 52 | .dword _.irq_0\irqno |
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| 53 | .endr |
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| 54 | |
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| 55 | .irpc irqhd,123456789abcdef |
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| 56 | .irpc irqld,0123456789abcdef |
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| 57 | .weak _.irq_\irqhd\irqld |
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| 58 | .set _.irq_\irqhd\irqld,_.irq |
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| 59 | .dword _.irq_\irqhd\irqld |
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| 60 | .endr |
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| 61 | .endr |
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| 62 | |
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| 63 | ; No use having a separate file with default _.irq_[0-f][0-f] |
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| 64 | ; definitions; just provide a single stub with a weak definition |
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| 65 | ; and make it up to the user to provide a strong definition that |
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| 66 | ; they force to be linked in (i.e. not in a library or at least |
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| 67 | ; together with another symbol they know is linked in). |
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| 68 | .text |
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| 69 | |
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| 70 | _.irq: |
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| 71 | #ifdef __arch_common_v10_v32 |
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| 72 | ; This is just to allow the multilib to compile without |
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| 73 | ; hackery: the "common" subset doesn't recognize |
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| 74 | ; interrupt-return insns. |
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| 75 | #elif __CRIS_arch_version >= 32 |
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| 76 | rete |
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| 77 | rfe |
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| 78 | #else |
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| 79 | reti |
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| 80 | nop |
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| 81 | #endif |
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| 82 | #endif /* __ELF__ || IN_CRT0 */ |
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