1 ;*****************************************************************************
2 ;* checkasm-a.asm: assembly check tool
3 ;*****************************************************************************
4 ;* Copyright (C) 2008-2014 x264 project
6 ;* Authors: Loren Merritt <lorenm@u.washington.edu>
7 ;* Henrik Gramner <henrik@gramner.com>
9 ;* This program is free software; you can redistribute it and/or modify
10 ;* it under the terms of the GNU General Public License as published by
11 ;* the Free Software Foundation; either version 2 of the License, or
12 ;* (at your option) any later version.
14 ;* This program is distributed in the hope that it will be useful,
15 ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;* GNU General Public License for more details.
19 ;* You should have received a copy of the GNU General Public License
20 ;* along with this program; if not, write to the Free Software
21 ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
23 ;* This program is also available under a commercial proprietary license.
24 ;* For more information, contact us at licensing@x264.com.
25 ;*****************************************************************************
31 error_message: db "failed to preserve register", 0
34 ; just random numbers to reduce the chance of incidental match
36 x6: ddq 0x79445c159ce790641a1b2550a612b48c
37 x7: ddq 0x86b2536fcd8cf6362eed899d5a28ddcd
38 x8: ddq 0x3f2bf84fc0fcca4eb0856806085e7943
39 x9: ddq 0xd229e1f5b281303facbd382dcf5b8de2
40 x10: ddq 0xab63e2e11fa38ed971aeaff20b095fd9
41 x11: ddq 0x77d410d5c42c882d89b0c0765892729a
42 x12: ddq 0x24b3c1d2a024048bc45ea11a955d8dd5
43 x13: ddq 0xdd7b8919edd427862e8ec680de14b47c
44 x14: ddq 0x11e53e2b2ac655ef135ce6888fa02cbf
45 x15: ddq 0x6de8f4c914c334d5011ff554472a7a10
46 n7: dq 0x21f86d66c8ca00ce
47 n8: dq 0x75b6ba21077c48ad
48 n9: dq 0xed56bb2dcb3c7736
49 n10: dq 0x8bda43d3fd1a7e06
50 n11: dq 0xb64a9c9e5d318408
51 n12: dq 0xdf9a54b303f1d3a3
52 n13: dq 0x4a75479abd64e097
53 n14: dq 0x249214109d5d1c88
60 ; max number of args used by any x264 asm function.
61 ; (max_args % 4) must equal 3 for stack alignment
66 ;-----------------------------------------------------------------------------
67 ; void x264_checkasm_stack_clobber( uint64_t clobber, ... )
68 ;-----------------------------------------------------------------------------
69 cglobal checkasm_stack_clobber, 1,2
70 ; Clobber the stack with junk below the stack pointer
71 %define size (max_args+6)*8
87 ;-----------------------------------------------------------------------------
88 ; intptr_t x264_checkasm_call( intptr_t (*func)(), int *ok, ... )
89 ;-----------------------------------------------------------------------------
91 cglobal checkasm_call, 2,15,16,max_args*8+8
93 mov [rsp+max_args*8], r1
95 ; All arguments have been pushed on the stack instead of registers in order to
96 ; test for incorrect assumptions that 32-bit ints are zero-extended to 64-bit.
106 mov r9, [rsp+stack_offset+(i+1)*8]
107 mov [rsp+(i-6)*8], r9
113 mov r9, [rsp+stack_offset+(i+7)*8]
122 mova m %+ i, [x %+ i]
143 pxor m %+ i, [x %+ i]
154 lea r0, [error_message]
156 mov r1, [rsp+max_args*8]
164 ; just random numbers to reduce the chance of incidental match
165 %define n3 dword 0x6549315c
166 %define n4 dword 0xe02f3e23
167 %define n5 dword 0xb78d0d1d
168 %define n6 dword 0x33627ba7
170 ;-----------------------------------------------------------------------------
171 ; intptr_t x264_checkasm_call( intptr_t (*func)(), int *ok, ... )
172 ;-----------------------------------------------------------------------------
173 cglobal checkasm_call, 1,7
179 push dword [esp+24+max_args*4]
192 lea r1, [error_message]
204 ;-----------------------------------------------------------------------------
205 ; int x264_stack_pagealign( int (*func)(), int align )
206 ;-----------------------------------------------------------------------------
207 cglobal stack_pagealign, 2,2
212 sub rsp, 32 ; shadow space