mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
170 lines
7.5 KiB
170 lines
7.5 KiB
/* |
|
* Assembly testing and benchmarking tool |
|
* Copyright (c) 2015 Henrik Gramner |
|
* Copyright (c) 2008 Loren Merritt |
|
* |
|
* This file is part of Libav. |
|
* |
|
* Libav is free software; you can redistribute it and/or modify |
|
* it under the terms of the GNU General Public License as published by |
|
* the Free Software Foundation; either version 2 of the License, or |
|
* (at your option) any later version. |
|
* |
|
* Libav is distributed in the hope that it will be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
* GNU General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU General Public License along |
|
* with Libav; if not, write to the Free Software Foundation, Inc., |
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
|
*/ |
|
|
|
#ifndef TESTS_CHECKASM_CHECKASM_H |
|
#define TESTS_CHECKASM_CHECKASM_H |
|
|
|
#include <stdint.h> |
|
#include "config.h" |
|
#include "libavutil/avstring.h" |
|
#include "libavutil/cpu.h" |
|
#include "libavutil/lfg.h" |
|
#include "libavutil/timer.h" |
|
|
|
void checkasm_check_bswapdsp(void); |
|
void checkasm_check_dcadsp(void); |
|
void checkasm_check_fmtconvert(void); |
|
void checkasm_check_h264pred(void); |
|
void checkasm_check_h264qpel(void); |
|
void checkasm_check_hevc_mc(void); |
|
void checkasm_check_synth_filter(void); |
|
void checkasm_check_v210enc(void); |
|
|
|
void *checkasm_check_func(void *func, const char *name, ...) av_printf_format(2, 3); |
|
int checkasm_bench_func(void); |
|
void checkasm_fail_func(const char *msg, ...) av_printf_format(1, 2); |
|
void checkasm_update_bench(int iterations, uint64_t cycles); |
|
void checkasm_report(const char *name, ...) av_printf_format(1, 2); |
|
|
|
/* float compare utilities */ |
|
int float_near_ulp(float a, float b, unsigned max_ulp); |
|
int float_near_abs_eps(float a, float b, float eps); |
|
int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp); |
|
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, |
|
unsigned len); |
|
int float_near_abs_eps_array(const float *a, const float *b, float eps, |
|
unsigned len); |
|
int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps, |
|
unsigned max_ulp, unsigned len); |
|
|
|
extern AVLFG checkasm_lfg; |
|
#define rnd() av_lfg_get(&checkasm_lfg) |
|
|
|
static av_unused void *func_ref, *func_new; |
|
|
|
#define BENCH_RUNS 1000 /* Trade-off between accuracy and speed */ |
|
|
|
/* Decide whether or not the specified function needs to be tested */ |
|
#define check_func(func, ...) (func_ref = checkasm_check_func((func_new = func), __VA_ARGS__)) |
|
|
|
/* Declare the function prototype. The first argument is the return value, the remaining |
|
* arguments are the function parameters. Naming parameters is optional. */ |
|
#define declare_func(ret, ...) declare_new(ret, __VA_ARGS__) typedef ret func_type(__VA_ARGS__) |
|
#define declare_func_emms(cpu_flags, ret, ...) declare_new_emms(cpu_flags, ret, __VA_ARGS__) typedef ret func_type(__VA_ARGS__) |
|
|
|
/* Indicate that the current test has failed */ |
|
#define fail() checkasm_fail_func("%s:%d", av_basename(__FILE__), __LINE__) |
|
|
|
/* Print the test outcome */ |
|
#define report checkasm_report |
|
|
|
/* Call the reference function */ |
|
#define call_ref(...) ((func_type *)func_ref)(__VA_ARGS__) |
|
|
|
#if ARCH_X86 && HAVE_YASM |
|
/* Verifies that clobbered callee-saved registers are properly saved and restored |
|
* and that either no MMX registers are touched or emms is issued */ |
|
void checkasm_checked_call(void *func, ...); |
|
/* Verifies that clobbered callee-saved registers are properly saved and restored |
|
* and issues emms for asm functions which are not required to do so */ |
|
void checkasm_checked_call_emms(void *func, ...); |
|
|
|
#if ARCH_X86_64 |
|
/* Evil hack: detect incorrect assumptions that 32-bit ints are zero-extended to 64-bit. |
|
* This is done by clobbering the stack with junk around the stack pointer and calling the |
|
* assembly function through checked_call() with added dummy arguments which forces all |
|
* real arguments to be passed on the stack and not in registers. For 32-bit arguments the |
|
* upper half of the 64-bit register locations on the stack will now contain junk which will |
|
* cause misbehaving functions to either produce incorrect output or segfault. Note that |
|
* even though this works extremely well in practice, it's technically not guaranteed |
|
* and false negatives is theoretically possible, but there can never be any false positives. |
|
*/ |
|
void checkasm_stack_clobber(uint64_t clobber, ...); |
|
#define declare_new(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__)\ |
|
= (void *)checkasm_checked_call; |
|
#define declare_new_emms(cpu_flags, ret, ...) \ |
|
ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__) = \ |
|
((cpu_flags) & av_get_cpu_flags()) ? (void *)checkasm_checked_call_emms : \ |
|
(void *)checkasm_checked_call; |
|
#define CLOB (UINT64_C(0xdeadbeefdeadbeef)) |
|
#define call_new(...) (checkasm_stack_clobber(CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,\ |
|
CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB),\ |
|
checked_call(func_new, 0, 0, 0, 0, 0, __VA_ARGS__)) |
|
#elif ARCH_X86_32 |
|
#define declare_new(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call; |
|
#define declare_new_emms(cpu_flags, ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = \ |
|
((cpu_flags) & av_get_cpu_flags()) ? (void *)checkasm_checked_call_emms : \ |
|
(void *)checkasm_checked_call; |
|
#define call_new(...) checked_call(func_new, __VA_ARGS__) |
|
#endif |
|
#elif ARCH_ARM && HAVE_ARMV5TE_EXTERNAL |
|
/* Use a dummy argument, to offset the real parameters by 2, not only 1. |
|
* This makes sure that potential 8-byte-alignment of parameters is kept the same |
|
* even when the extra parameters have been removed. */ |
|
void checkasm_checked_call_vfp(void *func, int dummy, ...); |
|
void checkasm_checked_call_novfp(void *func, int dummy, ...); |
|
extern void (*checkasm_checked_call)(void *func, int dummy, ...); |
|
#define declare_new(ret, ...) ret (*checked_call)(void *, int dummy, __VA_ARGS__) = (void *)checkasm_checked_call; |
|
#define call_new(...) checked_call(func_new, 0, __VA_ARGS__) |
|
#elif ARCH_AARCH64 && !defined(__APPLE__) |
|
void checkasm_checked_call(void *func, ...); |
|
#define declare_new(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call; |
|
#define call_new(...) checked_call(func_new, __VA_ARGS__) |
|
#else |
|
#define declare_new(ret, ...) |
|
#define declare_new_emms(cpu_flags, ret, ...) |
|
/* Call the function */ |
|
#define call_new(...) ((func_type *)func_new)(__VA_ARGS__) |
|
#endif |
|
|
|
#ifndef declare_new_emms |
|
#define declare_new_emms(cpu_flags, ret, ...) declare_new(ret, __VA_ARGS__) |
|
#endif |
|
|
|
/* Benchmark the function */ |
|
#ifdef AV_READ_TIME |
|
#define bench_new(...)\ |
|
do {\ |
|
if (checkasm_bench_func()) {\ |
|
func_type *tfunc = func_new;\ |
|
uint64_t tsum = 0;\ |
|
int ti, tcount = 0;\ |
|
for (ti = 0; ti < BENCH_RUNS; ti++) {\ |
|
uint64_t t = AV_READ_TIME();\ |
|
tfunc(__VA_ARGS__);\ |
|
tfunc(__VA_ARGS__);\ |
|
tfunc(__VA_ARGS__);\ |
|
tfunc(__VA_ARGS__);\ |
|
t = AV_READ_TIME() - t;\ |
|
if (t*tcount <= tsum*4 && ti > 0) {\ |
|
tsum += t;\ |
|
tcount++;\ |
|
}\ |
|
}\ |
|
checkasm_update_bench(tcount, tsum);\ |
|
}\ |
|
} while (0) |
|
#else |
|
#define bench_new(...) while(0) |
|
#endif |
|
|
|
#endif /* TESTS_CHECKASM_CHECKASM_H */
|
|
|