1/* SPDX-License-Identifier: GPL-2.0 */ 2/* Copyright (C) 2019 ARM Limited */ 3 4#ifndef __TEST_SIGNALS_H__ 5#define __TEST_SIGNALS_H__ 6 7#include <signal.h> 8#include <stdbool.h> 9#include <ucontext.h> 10 11/* 12 * Using ARCH specific and sanitized Kernel headers installed by KSFT 13 * framework since we asked for it by setting flag KSFT_KHDR_INSTALL 14 * in our Makefile. 15 */ 16#include <asm/ptrace.h> 17#include <asm/hwcap.h> 18 19#define __stringify_1(x...) #x 20#define __stringify(x...) __stringify_1(x) 21 22#define get_regval(regname, out) \ 23{ \ 24 asm volatile("mrs %0, " __stringify(regname) \ 25 : "=r" (out) \ 26 : \ 27 : "memory"); \ 28} 29 30/* 31 * Feature flags used in tdescr.feats_required to specify 32 * any feature by the test 33 */ 34enum { 35 FSSBS_BIT, 36 FMAX_END 37}; 38 39#define FEAT_SSBS (1UL << FSSBS_BIT) 40 41/* 42 * A descriptor used to describe and configure a test case. 43 * Fields with a non-trivial meaning are described inline in the following. 44 */ 45struct tdescr { 46 /* KEEP THIS FIELD FIRST for easier lookup from assembly */ 47 void *token; 48 /* when disabled token based sanity checking is skipped in handler */ 49 bool sanity_disabled; 50 /* just a name for the test-case; manadatory field */ 51 char *name; 52 char *descr; 53 unsigned long feats_required; 54 /* bitmask of effectively supported feats: populated at run-time */ 55 unsigned long feats_supported; 56 bool initialized; 57 unsigned int minsigstksz; 58 /* signum used as a test trigger. Zero if no trigger-signal is used */ 59 int sig_trig; 60 /* 61 * signum considered as a successful test completion. 62 * Zero when no signal is expected on success 63 */ 64 int sig_ok; 65 /* signum expected on unsupported CPU features. */ 66 int sig_unsupp; 67 /* a timeout in second for test completion */ 68 unsigned int timeout; 69 bool triggered; 70 bool pass; 71 unsigned int result; 72 /* optional sa_flags for the installed handler */ 73 int sa_flags; 74 ucontext_t saved_uc; 75 /* used by get_current_ctx() */ 76 size_t live_sz; 77 ucontext_t *live_uc; 78 volatile sig_atomic_t live_uc_valid; 79 /* optional test private data */ 80 void *priv; 81 82 /* a custom setup: called alternatively to default_setup */ 83 int (*setup)(struct tdescr *td); 84 /* a custom init: called by default test init after test_setup */ 85 bool (*init)(struct tdescr *td); 86 /* a custom cleanup function called before test exits */ 87 void (*cleanup)(struct tdescr *td); 88 /* an optional function to be used as a trigger for starting test */ 89 int (*trigger)(struct tdescr *td); 90 /* 91 * the actual test-core: invoked differently depending on the 92 * presence of the trigger function above; this is mandatory 93 */ 94 int (*run)(struct tdescr *td, siginfo_t *si, ucontext_t *uc); 95 /* an optional function for custom results' processing */ 96 void (*check_result)(struct tdescr *td); 97}; 98 99extern struct tdescr tde; 100#endif 101