| 1 | /* leave.ash -- LZO assembler stuff |
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| 2 | |
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| 3 | This file is part of the LZO real-time data compression library. |
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| 4 | |
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| 5 | Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer |
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| 6 | All Rights Reserved. |
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| 7 | |
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| 8 | The LZO library is free software; you can redistribute it and/or |
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| 9 | modify it under the terms of the GNU General Public License as |
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| 10 | published by the Free Software Foundation; either version 2 of |
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| 11 | the License, or (at your option) any later version. |
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| 12 | |
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| 13 | The LZO library is distributed in the hope that it will be useful, |
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | GNU General Public License for more details. |
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| 17 | |
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| 18 | You should have received a copy of the GNU General Public License |
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| 19 | along with the LZO library; see the file COPYING. |
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| 20 | If not, write to the Free Software Foundation, Inc., |
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| 21 | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 22 | |
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| 23 | Markus F.X.J. Oberhumer |
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| 24 | <markus@oberhumer.com> |
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| 25 | http://www.oberhumer.com/opensource/lzo/ |
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| 26 | */ |
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| 27 | |
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| 28 | |
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| 29 | /*********************************************************************** |
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| 30 | // |
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| 31 | ************************************************************************/ |
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| 32 | |
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| 33 | /* check uncompressed size */ |
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| 34 | #if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT) |
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| 35 | cmpl OUTEND,%edi |
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| 36 | ja .L_output_overrun |
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| 37 | #endif |
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| 38 | |
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| 39 | /* check compressed size */ |
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| 40 | movl INP,%edx |
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| 41 | addl INS,%edx |
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| 42 | cmpl %edx,%esi /* check compressed size */ |
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| 43 | ja .L_input_overrun |
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| 44 | jb .L_input_not_consumed |
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| 45 | |
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| 46 | .L_leave: |
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| 47 | subl OUTP,%edi /* write back the uncompressed size */ |
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| 48 | movl OUTS,%edx |
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| 49 | movl %edi,(%edx) |
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| 50 | |
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| 51 | negl %eax |
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| 52 | addl $12,%esp |
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| 53 | popl %edx |
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| 54 | popl %ecx |
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| 55 | popl %ebx |
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| 56 | popl %esi |
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| 57 | popl %edi |
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| 58 | popl %ebp |
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| 59 | #if 1 |
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| 60 | ret |
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| 61 | #else |
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| 62 | jmp .L_end |
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| 63 | #endif |
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| 64 | |
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| 65 | |
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| 66 | .L_error: |
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| 67 | movl $1,%eax /* LZO_E_ERROR */ |
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| 68 | jmp .L_leave |
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| 69 | |
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| 70 | .L_input_not_consumed: |
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| 71 | movl $8,%eax /* LZO_E_INPUT_NOT_CONSUMED */ |
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| 72 | jmp .L_leave |
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| 73 | |
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| 74 | .L_input_overrun: |
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| 75 | movl $4,%eax /* LZO_E_INPUT_OVERRUN */ |
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| 76 | jmp .L_leave |
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| 77 | |
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| 78 | #if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT) |
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| 79 | .L_output_overrun: |
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| 80 | movl $5,%eax /* LZO_E_OUTPUT_OVERRUN */ |
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| 81 | jmp .L_leave |
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| 82 | #endif |
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| 83 | |
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| 84 | #if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND) |
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| 85 | .L_lookbehind_overrun: |
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| 86 | movl $6,%eax /* LZO_E_LOOKBEHIND_OVERRUN */ |
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| 87 | jmp .L_leave |
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| 88 | #endif |
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| 89 | |
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| 90 | #if defined(LZO_DEBUG) |
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| 91 | .L_assert_fail: |
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| 92 | movl $99,%eax |
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| 93 | jmp .L_leave |
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| 94 | #endif |
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| 95 | |
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| 96 | .L_end: |
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| 97 | |
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| 98 | |
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| 99 | /* |
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| 100 | vi:ts=4 |
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| 101 | */ |
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| 102 | |
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