mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
ba89dc27b5
Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com>
257 lines
11 KiB
C
257 lines
11 KiB
C
/*
|
|
* Assembly testing and benchmarking tool
|
|
* Copyright (c) 2015 Henrik Gramner
|
|
* Copyright (c) 2008 Loren Merritt
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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"
|
|
|
|
#if CONFIG_LINUX_PERF
|
|
#include <unistd.h> // read(3)
|
|
#include <sys/ioctl.h>
|
|
#include <asm/unistd.h>
|
|
#include <linux/perf_event.h>
|
|
#endif
|
|
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/internal.h"
|
|
#include "libavutil/lfg.h"
|
|
#include "libavutil/timer.h"
|
|
|
|
void checkasm_check_aacpsdsp(void);
|
|
void checkasm_check_afir(void);
|
|
void checkasm_check_alacdsp(void);
|
|
void checkasm_check_audiodsp(void);
|
|
void checkasm_check_blend(void);
|
|
void checkasm_check_blockdsp(void);
|
|
void checkasm_check_bswapdsp(void);
|
|
void checkasm_check_colorspace(void);
|
|
void checkasm_check_exrdsp(void);
|
|
void checkasm_check_fixed_dsp(void);
|
|
void checkasm_check_flacdsp(void);
|
|
void checkasm_check_float_dsp(void);
|
|
void checkasm_check_fmtconvert(void);
|
|
void checkasm_check_g722dsp(void);
|
|
void checkasm_check_h264dsp(void);
|
|
void checkasm_check_h264pred(void);
|
|
void checkasm_check_h264qpel(void);
|
|
void checkasm_check_hevc_add_res(void);
|
|
void checkasm_check_hevc_idct(void);
|
|
void checkasm_check_hevc_sao(void);
|
|
void checkasm_check_huffyuvdsp(void);
|
|
void checkasm_check_jpeg2000dsp(void);
|
|
void checkasm_check_llviddsp(void);
|
|
void checkasm_check_llviddspenc(void);
|
|
void checkasm_check_nlmeans(void);
|
|
void checkasm_check_pixblockdsp(void);
|
|
void checkasm_check_sbrdsp(void);
|
|
void checkasm_check_synth_filter(void);
|
|
void checkasm_check_sw_rgb(void);
|
|
void checkasm_check_utvideodsp(void);
|
|
void checkasm_check_v210enc(void);
|
|
void checkasm_check_vf_hflip(void);
|
|
void checkasm_check_vf_threshold(void);
|
|
void checkasm_check_vp8dsp(void);
|
|
void checkasm_check_vp9dsp(void);
|
|
void checkasm_check_videodsp(void);
|
|
|
|
struct CheckasmPerf;
|
|
|
|
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);
|
|
struct CheckasmPerf *checkasm_get_perf_context(void);
|
|
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);
|
|
int double_near_abs_eps(double a, double b, double eps);
|
|
int double_near_abs_eps_array(const double *a, const double *b, double eps,
|
|
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_float(ret, ...) declare_new_float(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_X86ASM
|
|
/* 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, ...);
|
|
/* Verifies that clobbered callee-saved registers are properly saved and restored
|
|
* but doesn't issue emms. Meant for dsp functions returning float or double */
|
|
void checkasm_checked_call_float(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_float(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__)\
|
|
= (void *)checkasm_checked_call_float;
|
|
#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_float(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call_float;
|
|
#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_stack_clobber(uint64_t clobber, ...);
|
|
void checkasm_checked_call(void *func, ...);
|
|
#define declare_new(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, int, int, __VA_ARGS__)\
|
|
= (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,CLOB,CLOB),\
|
|
checked_call(func_new, 0, 0, 0, 0, 0, 0, 0, __VA_ARGS__))
|
|
#else
|
|
#define declare_new(ret, ...)
|
|
#define declare_new_float(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
|
|
#ifndef declare_new_float
|
|
#define declare_new_float(ret, ...) declare_new(ret, __VA_ARGS__)
|
|
#endif
|
|
|
|
typedef struct CheckasmPerf {
|
|
int sysfd;
|
|
uint64_t cycles;
|
|
int iterations;
|
|
} CheckasmPerf;
|
|
|
|
#if defined(AV_READ_TIME) || CONFIG_LINUX_PERF
|
|
|
|
#if CONFIG_LINUX_PERF
|
|
#define PERF_START(t) do { \
|
|
ioctl(sysfd, PERF_EVENT_IOC_RESET, 0); \
|
|
ioctl(sysfd, PERF_EVENT_IOC_ENABLE, 0); \
|
|
} while (0)
|
|
#define PERF_STOP(t) do { \
|
|
ioctl(sysfd, PERF_EVENT_IOC_DISABLE, 0); \
|
|
read(sysfd, &t, sizeof(t)); \
|
|
} while (0)
|
|
#else
|
|
#define PERF_START(t) t = AV_READ_TIME()
|
|
#define PERF_STOP(t) t = AV_READ_TIME() - t
|
|
#endif
|
|
|
|
/* Benchmark the function */
|
|
#define bench_new(...)\
|
|
do {\
|
|
if (checkasm_bench_func()) {\
|
|
struct CheckasmPerf *perf = checkasm_get_perf_context();\
|
|
av_unused const int sysfd = perf->sysfd;\
|
|
func_type *tfunc = func_new;\
|
|
uint64_t tsum = 0;\
|
|
int ti, tcount = 0;\
|
|
uint64_t t = 0; \
|
|
for (ti = 0; ti < BENCH_RUNS; ti++) {\
|
|
PERF_START(t);\
|
|
tfunc(__VA_ARGS__);\
|
|
tfunc(__VA_ARGS__);\
|
|
tfunc(__VA_ARGS__);\
|
|
tfunc(__VA_ARGS__);\
|
|
PERF_STOP(t);\
|
|
if (t*tcount <= tsum*4 && ti > 0) {\
|
|
tsum += t;\
|
|
tcount++;\
|
|
}\
|
|
}\
|
|
emms_c();\
|
|
perf->cycles += t;\
|
|
perf->iterations++;\
|
|
}\
|
|
} while (0)
|
|
#else
|
|
#define bench_new(...) while(0)
|
|
#define PERF_START(t) while(0)
|
|
#define PERF_STOP(t) while(0)
|
|
#endif
|
|
|
|
#endif /* TESTS_CHECKASM_CHECKASM_H */
|