diff options
Diffstat (limited to 'tools/testing/selftests/arm64/signal/test_signals_utils.c')
-rw-r--r-- | tools/testing/selftests/arm64/signal/test_signals_utils.c | 121 |
1 files changed, 98 insertions, 23 deletions
diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index 2de6e5ed5e25..308e229e58ab 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -26,6 +26,9 @@ static int sig_copyctx = SIGTRAP; static char const *const feats_names[FMAX_END] = { " SSBS ", + " SVE ", + " SME ", + " FA64 ", }; #define MAX_FEATS_SZ 128 @@ -35,6 +38,8 @@ static inline char *feats_to_string(unsigned long feats) { size_t flen = MAX_FEATS_SZ - 1; + feats_string[0] = '\0'; + for (int i = 0; i < FMAX_END; i++) { if (feats & (1UL << i)) { size_t tlen = strlen(feats_names[i]); @@ -160,15 +165,64 @@ static bool handle_signal_ok(struct tdescr *td, } static bool handle_signal_copyctx(struct tdescr *td, - siginfo_t *si, void *uc) + siginfo_t *si, void *uc_in) { + ucontext_t *uc = uc_in; + struct _aarch64_ctx *head; + struct extra_context *extra, *copied_extra; + size_t offset = 0; + size_t to_copy; + + ASSERT_GOOD_CONTEXT(uc); + /* Mangling PC to avoid loops on original BRK instr */ - ((ucontext_t *)uc)->uc_mcontext.pc += 4; - memcpy(td->live_uc, uc, td->live_sz); - ASSERT_GOOD_CONTEXT(td->live_uc); + uc->uc_mcontext.pc += 4; + + /* + * Check for an preserve any extra data too with fixups. + */ + head = (struct _aarch64_ctx *)uc->uc_mcontext.__reserved; + head = get_header(head, EXTRA_MAGIC, td->live_sz, &offset); + if (head) { + extra = (struct extra_context *)head; + + /* + * The extra buffer must be immediately after the + * extra_context and a 16 byte terminator. Include it + * in the copy, this was previously validated in + * ASSERT_GOOD_CONTEXT(). + */ + to_copy = offset + sizeof(struct extra_context) + 16 + + extra->size; + copied_extra = (struct extra_context *)&(td->live_uc->uc_mcontext.__reserved[offset]); + } else { + copied_extra = NULL; + to_copy = sizeof(ucontext_t); + } + + if (to_copy > td->live_sz) { + fprintf(stderr, + "Not enough space to grab context, %lu/%lu bytes\n", + td->live_sz, to_copy); + return false; + } + + memcpy(td->live_uc, uc, to_copy); + + /* + * If there was any EXTRA_CONTEXT fix up the size to be the + * struct extra_context and the following terminator record, + * this means that the rest of the code does not need to have + * special handling for the record and we don't need to fix up + * datap for the new location. + */ + if (copied_extra) + copied_extra->head.size = sizeof(*copied_extra) + 16; + td->live_uc_valid = 1; fprintf(stderr, - "GOOD CONTEXT grabbed from sig_copyctx handler\n"); + "%lu byte GOOD CONTEXT grabbed from sig_copyctx handler\n", + to_copy); return true; } @@ -255,7 +309,7 @@ int test_init(struct tdescr *td) td->minsigstksz = MINSIGSTKSZ; fprintf(stderr, "Detected MINSTKSIGSZ:%d\n", td->minsigstksz); - if (td->feats_required) { + if (td->feats_required || td->feats_incompatible) { td->feats_supported = 0; /* * Checking for CPU required features using both the @@ -263,16 +317,39 @@ int test_init(struct tdescr *td) */ if (getauxval(AT_HWCAP) & HWCAP_SSBS) td->feats_supported |= FEAT_SSBS; - if (feats_ok(td)) - fprintf(stderr, - "Required Features: [%s] supported\n", - feats_to_string(td->feats_required & - td->feats_supported)); - else - fprintf(stderr, - "Required Features: [%s] NOT supported\n", - feats_to_string(td->feats_required & - ~td->feats_supported)); + if (getauxval(AT_HWCAP) & HWCAP_SVE) + td->feats_supported |= FEAT_SVE; + if (getauxval(AT_HWCAP2) & HWCAP2_SME) + td->feats_supported |= FEAT_SME; + if (getauxval(AT_HWCAP2) & HWCAP2_SME_FA64) + td->feats_supported |= FEAT_SME_FA64; + if (feats_ok(td)) { + if (td->feats_required & td->feats_supported) + fprintf(stderr, + "Required Features: [%s] supported\n", + feats_to_string(td->feats_required & + td->feats_supported)); + if (!(td->feats_incompatible & td->feats_supported)) + fprintf(stderr, + "Incompatible Features: [%s] absent\n", + feats_to_string(td->feats_incompatible)); + } else { + if ((td->feats_required & td->feats_supported) != + td->feats_supported) + fprintf(stderr, + "Required Features: [%s] NOT supported\n", + feats_to_string(td->feats_required & + ~td->feats_supported)); + if (td->feats_incompatible & td->feats_supported) + fprintf(stderr, + "Incompatible Features: [%s] supported\n", + feats_to_string(td->feats_incompatible & + ~td->feats_supported)); + + + td->result = KSFT_SKIP; + return 0; + } } /* Perform test specific additional initialization */ @@ -304,14 +381,12 @@ int test_setup(struct tdescr *td) int test_run(struct tdescr *td) { - if (td->sig_trig) { - if (td->trigger) - return td->trigger(td); - else - return default_trigger(td); - } else { + if (td->trigger) + return td->trigger(td); + else if (td->sig_trig) + return default_trigger(td); + else return td->run(td, NULL, NULL); - } } void test_result(struct tdescr *td) |