| 1 | /* |
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| 2 | (C) Copyright IBM Corp. 2005, 2006 |
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| 3 | |
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| 4 | All rights reserved. |
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| 5 | |
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| 6 | Redistribution and use in source and binary forms, with or without |
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| 7 | modification, are permitted provided that the following conditions are met: |
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| 8 | |
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| 9 | * Redistributions of source code must retain the above copyright notice, |
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| 10 | this list of conditions and the following disclaimer. |
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| 11 | * Redistributions in binary form must reproduce the above copyright |
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| 12 | notice, this list of conditions and the following disclaimer in the |
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| 13 | documentation and/or other materials provided with the distribution. |
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| 14 | * Neither the name of IBM nor the names of its contributors may be |
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| 15 | used to endorse or promote products derived from this software without |
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| 16 | specific prior written permission. |
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| 17 | |
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| 18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 21 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 22 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 23 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 24 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 25 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 26 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 27 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 28 | POSSIBILITY OF SUCH DAMAGE. |
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| 29 | |
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| 30 | Author: Andreas Neukoetter (ti95neuk@de.ibm.com) |
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| 31 | */ |
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| 32 | #include <spu_intrinsics.h> |
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| 33 | #include <errno.h> |
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| 34 | #include "jsre.h" |
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| 35 | |
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| 36 | int |
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| 37 | __send_to_ppe (unsigned int signalcode, unsigned int opcode, void *data) |
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| 38 | { |
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| 39 | |
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| 40 | int newerrno; |
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| 41 | unsigned int combined = ( ( opcode<<24 )&0xff000000 ) | ( ( unsigned int )data & 0x00ffffff ); |
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| 42 | |
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| 43 | __vector unsigned int stopfunc = { |
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| 44 | signalcode, /* stop */ |
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| 45 | (unsigned int) combined, |
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| 46 | 0x4020007f, /* nop */ |
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| 47 | 0x35000000 /* bi $0 */ |
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| 48 | }; |
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| 49 | |
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| 50 | void (*f) (void) = (void *) &stopfunc; |
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| 51 | asm ("sync"); |
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| 52 | f (); |
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| 53 | newerrno = ((unsigned int *) data)[3]; |
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| 54 | /* |
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| 55 | * Note: branchless code to conditionally set errno using |
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| 56 | * spu_cmpeq and spu_sel used more space than the following. |
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| 57 | */ |
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| 58 | if (newerrno) |
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| 59 | errno = newerrno; |
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| 60 | |
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| 61 | /* |
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| 62 | * Return the rc code stored in slot 0. |
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| 63 | */ |
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| 64 | return ((unsigned int *) data)[0]; |
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| 65 | } |
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| 66 | |
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