| 1 | ; vim:filetype=nasm ts=8 |
| 2 | |
| 3 | ; libFLAC - Free Lossless Audio Codec library |
| 4 | ; Copyright (C) 2001-2009 Josh Coalson |
| 5 | ; Copyright (C) 2011-2016 Xiph.Org Foundation |
| 6 | ; |
| 7 | ; Redistribution and use in source and binary forms, with or without |
| 8 | ; modification, are permitted provided that the following conditions |
| 9 | ; are met: |
| 10 | ; |
| 11 | ; - Redistributions of source code must retain the above copyright |
| 12 | ; notice, this list of conditions and the following disclaimer. |
| 13 | ; |
| 14 | ; - Redistributions in binary form must reproduce the above copyright |
| 15 | ; notice, this list of conditions and the following disclaimer in the |
| 16 | ; documentation and/or other materials provided with the distribution. |
| 17 | ; |
| 18 | ; - Neither the name of the Xiph.org Foundation nor the names of its |
| 19 | ; contributors may be used to endorse or promote products derived from |
| 20 | ; this software without specific prior written permission. |
| 21 | ; |
| 22 | ; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 23 | ; ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 24 | ; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 25 | ; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 26 | ; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 27 | ; EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 28 | ; PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 29 | ; PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 30 | ; LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 31 | ; NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 32 | ; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | |
| 34 | %include "nasm.h" |
| 35 | |
| 36 | data_section |
| 37 | |
| 38 | cglobal FLAC__cpu_have_cpuid_asm_ia32 |
| 39 | cglobal FLAC__cpu_info_asm_ia32 |
| 40 | |
| 41 | code_section |
| 42 | |
| 43 | ; ********************************************************************** |
| 44 | ; |
| 45 | ; FLAC__uint32 FLAC__cpu_have_cpuid_asm_ia32() |
| 46 | ; |
| 47 | |
| 48 | cident FLAC__cpu_have_cpuid_asm_ia32 |
| 49 | pushfd |
| 50 | pop eax |
| 51 | mov edx, eax |
| 52 | xor eax, 0x00200000 |
| 53 | push eax |
| 54 | popfd |
| 55 | pushfd |
| 56 | pop eax |
| 57 | xor eax, edx |
| 58 | and eax, 0x00200000 |
| 59 | shr eax, 0x15 |
| 60 | push edx |
| 61 | popfd |
| 62 | ret |
| 63 | |
| 64 | ; ********************************************************************** |
| 65 | ; |
| 66 | ; void FLAC__cpu_info_asm_ia32(FLAC__uint32 *flags_edx, FLAC__uint32 *flags_ecx) |
| 67 | ; |
| 68 | |
| 69 | cident FLAC__cpu_info_asm_ia32 |
| 70 | ;[esp + 8] == flags_edx |
| 71 | ;[esp + 12] == flags_ecx |
| 72 | |
| 73 | push ebx |
| 74 | call FLAC__cpu_have_cpuid_asm_ia32 |
| 75 | test eax, eax |
| 76 | jz .no_cpuid |
| 77 | mov eax, 0 |
| 78 | cpuid |
| 79 | cmp eax, 1 |
| 80 | jb .no_cpuid |
| 81 | xor ecx, ecx |
| 82 | mov eax, 1 |
| 83 | cpuid |
| 84 | mov ebx, [esp + 8] |
| 85 | mov [ebx], edx |
| 86 | mov ebx, [esp + 12] |
| 87 | mov [ebx], ecx |
| 88 | jmp .end |
| 89 | .no_cpuid: |
| 90 | xor eax, eax |
| 91 | mov ebx, [esp + 8] |
| 92 | mov [ebx], eax |
| 93 | mov ebx, [esp + 12] |
| 94 | mov [ebx], eax |
| 95 | .end: |
| 96 | pop ebx |
| 97 | ret |
| 98 | |
| 99 | ; end |