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Merge commit 'fec76cd430f3c865183a6e5b4caec0743e055605'
* commit 'fec76cd430f3c865183a6e5b4caec0743e055605': checkasm: Check register clobbering on aarch64 Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
This commit is contained in:
Hendrik Leppkes
commit
7e29903526
1
tests/checkasm/aarch64/Makefile
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tests/checkasm/aarch64/Makefile
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CHECKASMOBJS += aarch64/checkasm.o
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148
tests/checkasm/aarch64/checkasm.S
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tests/checkasm/aarch64/checkasm.S
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/****************************************************************************
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* Assembly testing and benchmarking tool
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* Copyright (c) 2015 Martin Storsjo
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* Copyright (c) 2015 Janne Grunau
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*****************************************************************************/
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#include "libavutil/aarch64/asm.S"
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const register_init
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.quad 0x21f86d66c8ca00ce
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.quad 0x75b6ba21077c48ad
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.quad 0xed56bb2dcb3c7736
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.quad 0x8bda43d3fd1a7e06
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.quad 0xb64a9c9e5d318408
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.quad 0xdf9a54b303f1d3a3
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.quad 0x4a75479abd64e097
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.quad 0x249214109d5d1c88
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.quad 0x1a1b2550a612b48c
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.quad 0x79445c159ce79064
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.quad 0x2eed899d5a28ddcd
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.quad 0x86b2536fcd8cf636
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.quad 0xb0856806085e7943
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.quad 0x3f2bf84fc0fcca4e
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.quad 0xacbd382dcf5b8de2
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.quad 0xd229e1f5b281303f
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.quad 0x71aeaff20b095fd9
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.quad 0xab63e2e11fa38ed9
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endconst
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const error_message
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.asciz "failed to preserve register"
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endconst
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// max number of args used by any asm function.
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#define MAX_ARGS 15
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#define ARG_STACK ((8*(MAX_ARGS - 7) + 15) & ~15)
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function checkasm_checked_call, export=1
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stp x29, x30, [sp, #-16]!
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mov x29, sp
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stp x19, x20, [sp, #-16]!
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stp x21, x22, [sp, #-16]!
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stp x23, x24, [sp, #-16]!
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stp x25, x26, [sp, #-16]!
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stp x27, x28, [sp, #-16]!
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stp d8, d9, [sp, #-16]!
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stp d10, d11, [sp, #-16]!
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stp d12, d13, [sp, #-16]!
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stp d14, d15, [sp, #-16]!
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movrel x9, register_init
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ldp d8, d9, [x9], #16
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ldp d10, d11, [x9], #16
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ldp d12, d13, [x9], #16
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ldp d14, d15, [x9], #16
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ldp x19, x20, [x9], #16
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ldp x21, x22, [x9], #16
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ldp x23, x24, [x9], #16
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ldp x25, x26, [x9], #16
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ldp x27, x28, [x9], #16
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sub sp, sp, #ARG_STACK
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.equ pos, 0
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// the first stacked arg is copied to x7
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.rept MAX_ARGS-7
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ldr x9, [x29, #16 + 8 + pos]
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str x9, [sp, #pos]
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.equ pos, pos + 8
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.endr
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mov x12, x0
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mov x0, x1
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mov x1, x2
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mov x2, x3
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mov x3, x4
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mov x4, x5
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mov x5, x6
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mov x6, x7
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ldr x7, [x29, #16]
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blr x12
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add sp, sp, #ARG_STACK
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stp x0, x1, [sp, #-16]!
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movrel x9, register_init
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movi v3.8h, #0
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.macro check_reg_neon reg1, reg2
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ldr q0, [x9], #16
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uzp1 v1.2d, v\reg1\().2d, v\reg2\().2d
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eor v0.16b, v0.16b, v1.16b
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orr v3.16b, v3.16b, v0.16b
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.endm
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check_reg_neon 8, 9
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check_reg_neon 10, 11
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check_reg_neon 12, 13
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check_reg_neon 14, 15
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uqxtn v3.8b, v3.8h
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umov x3, v3.d[0]
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.macro check_reg reg1, reg2
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ldp x0, x1, [x9], #16
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eor x0, x0, \reg1
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eor x1, x1, \reg2
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orr x3, x3, x0
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orr x3, x3, x1
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.endm
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check_reg x19, x20
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check_reg x21, x22
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check_reg x23, x24
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check_reg x25, x26
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check_reg x27, x28
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cbz x3, 0f
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movrel x0, error_message
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bl X(checkasm_fail_func)
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0:
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ldp x0, x1, [sp], #16
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ldp d14, d15, [sp], #16
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ldp d12, d13, [sp], #16
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ldp d10, d11, [sp], #16
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ldp d8, d9, [sp], #16
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ldp x27, x28, [sp], #16
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ldp x25, x26, [sp], #16
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ldp x23, x24, [sp], #16
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ldp x21, x22, [sp], #16
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ldp x19, x20, [sp], #16
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ldp x29, x30, [sp], #16
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ret
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endfunc
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@ -129,6 +129,10 @@ void checkasm_checked_call_novfp(void *func, int dummy, ...);
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extern void (*checkasm_checked_call)(void *func, int dummy, ...);
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#define declare_new(ret, ...) ret (*checked_call)(void *, int dummy, __VA_ARGS__) = (void *)checkasm_checked_call;
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#define call_new(...) checked_call(func_new, 0, __VA_ARGS__)
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#elif ARCH_AARCH64 && !defined(__APPLE__)
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void checkasm_checked_call(void *func, ...);
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#define declare_new(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call;
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#define call_new(...) checked_call(func_new, __VA_ARGS__)
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#else
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#define declare_new(ret, ...)
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#define declare_new_emms(cpu_flags, ret, ...)
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