/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (C) 2019 ARM Limited */ #ifndef __TEST_SIGNALS_H__ #define __TEST_SIGNALS_H__ #include <signal.h> #include <stdbool.h> #include <ucontext.h> /* * Using ARCH specific and sanitized Kernel headers from the tree. */ #include <asm/ptrace.h> #include <asm/hwcap.h> #define __stringify_1(x...) #x #define __stringify(x...) __stringify_1(x) #define get_regval(regname, out) \ { \ asm volatile("mrs %0, " __stringify(regname) \ : "=r" (out) \ : \ : "memory"); \ } /* * Feature flags used in tdescr.feats_required to specify * any feature by the test */ enum { FSSBS_BIT, FSVE_BIT, FSME_BIT, FSME_FA64_BIT, FMAX_END }; #define FEAT_SSBS (1UL << FSSBS_BIT) #define FEAT_SVE (1UL << FSVE_BIT) #define FEAT_SME (1UL << FSME_BIT) #define FEAT_SME_FA64 (1UL << FSME_FA64_BIT) /* * A descriptor used to describe and configure a test case. * Fields with a non-trivial meaning are described inline in the following. */ struct tdescr { /* KEEP THIS FIELD FIRST for easier lookup from assembly */ void *token; /* when disabled token based sanity checking is skipped in handler */ bool sanity_disabled; /* just a name for the test-case; manadatory field */ char *name; char *descr; unsigned long feats_required; unsigned long feats_incompatible; /* bitmask of effectively supported feats: populated at run-time */ unsigned long feats_supported; bool initialized; unsigned int minsigstksz; /* signum used as a test trigger. Zero if no trigger-signal is used */ int sig_trig; /* * signum considered as a successful test completion. * Zero when no signal is expected on success */ int sig_ok; /* signum expected on unsupported CPU features. */ int sig_unsupp; /* a timeout in second for test completion */ unsigned int timeout; bool triggered; bool pass; unsigned int result; /* optional sa_flags for the installed handler */ int sa_flags; ucontext_t saved_uc; /* used by get_current_ctx() */ size_t live_sz; ucontext_t *live_uc; volatile sig_atomic_t live_uc_valid; /* optional test private data */ void *priv; /* a custom setup: called alternatively to default_setup */ int (*setup)(struct tdescr *td); /* a custom init: called by default test init after test_setup */ bool (*init)(struct tdescr *td); /* a custom cleanup function called before test exits */ void (*cleanup)(struct tdescr *td); /* an optional function to be used as a trigger for starting test */ int (*trigger)(struct tdescr *td); /* * the actual test-core: invoked differently depending on the * presence of the trigger function above; this is mandatory */ int (*run)(struct tdescr *td, siginfo_t *si, ucontext_t *uc); /* an optional function for custom results' processing */ void (*check_result)(struct tdescr *td); }; extern struct tdescr tde; #endif