| /* |
| * 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_opusdsp(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_sw_scale(void); |
| void checkasm_check_utvideodsp(void); |
| void checkasm_check_v210dec(void); |
| void checkasm_check_v210enc(void); |
| void checkasm_check_vf_eq(void); |
| void checkasm_check_vf_gblur(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__, \ |
| int, int, int, int, int, int, int, int, \ |
| int, int, int, int, int, int, int) = (void *)checkasm_checked_call; |
| #define call_new(...) checked_call(func_new, 0, __VA_ARGS__, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0) |
| #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__,\ |
| int, int, int, int, int, int, int, int,\ |
| int, int, int, int, int, int, int)\ |
| = (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__,\ |
| 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0)) |
| #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 |
| |
| #define DECL_CHECKASM_CHECK_FUNC(type) \ |
| int checkasm_check_##type(const char *const file, const int line, \ |
| const type *const buf1, const ptrdiff_t stride1, \ |
| const type *const buf2, const ptrdiff_t stride2, \ |
| const int w, const int h, const char *const name) |
| |
| DECL_CHECKASM_CHECK_FUNC(uint8_t); |
| DECL_CHECKASM_CHECK_FUNC(uint16_t); |
| DECL_CHECKASM_CHECK_FUNC(int16_t); |
| DECL_CHECKASM_CHECK_FUNC(int32_t); |
| |
| #define PASTE(a,b) a ## b |
| #define CONCAT(a,b) PASTE(a,b) |
| |
| #define checkasm_check(prefix, ...) CONCAT(checkasm_check_, prefix)(__FILE__, __LINE__, __VA_ARGS__) |
| |
| #endif /* TESTS_CHECKASM_CHECKASM_H */ |