diff options
Diffstat (limited to 'tools/testing/selftests')
5 files changed, 142 insertions, 3 deletions
diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 93333a90bf3a..d4ad813fed10 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -39,6 +39,20 @@ static void cssc_sigill(void) asm volatile(".inst 0xdac01c00" : : : "x0"); } +static void mops_sigill(void) +{ + char dst[1], src[1]; + register char *dstp asm ("x0") = dst; + register char *srcp asm ("x1") = src; + register long size asm ("x2") = 1; + + /* CPYP [x0]!, [x1]!, x2! */ + asm volatile(".inst 0x1d010440" + : "+r" (dstp), "+r" (srcp), "+r" (size) + : + : "cc", "memory"); +} + static void rng_sigill(void) { asm volatile("mrs x0, S3_3_C2_C4_0" : : : "x0"); @@ -210,6 +224,14 @@ static const struct hwcap_data { .sigill_fn = cssc_sigill, }, { + .name = "MOPS", + .at_hwcap = AT_HWCAP2, + .hwcap_bit = HWCAP2_MOPS, + .cpuinfo = "mops", + .sigill_fn = mops_sigill, + .sigill_reliable = true, + }, + { .name = "RNG", .at_hwcap = AT_HWCAP2, .hwcap_bit = HWCAP2_RNG, diff --git a/tools/testing/selftests/arm64/abi/ptrace.c b/tools/testing/selftests/arm64/abi/ptrace.c index be952511af22..abe4d58d731d 100644 --- a/tools/testing/selftests/arm64/abi/ptrace.c +++ b/tools/testing/selftests/arm64/abi/ptrace.c @@ -20,7 +20,7 @@ #include "../../kselftest.h" -#define EXPECTED_TESTS 7 +#define EXPECTED_TESTS 11 #define MAX_TPIDRS 2 @@ -132,6 +132,34 @@ static void test_tpidr(pid_t child) } } +static void test_hw_debug(pid_t child, int type, const char *type_name) +{ + struct user_hwdebug_state state; + struct iovec iov; + int slots, arch, ret; + + iov.iov_len = sizeof(state); + iov.iov_base = &state; + + /* Should be able to read the values */ + ret = ptrace(PTRACE_GETREGSET, child, type, &iov); + ksft_test_result(ret == 0, "read_%s\n", type_name); + + if (ret == 0) { + /* Low 8 bits is the number of slots, next 4 bits the arch */ + slots = state.dbg_info & 0xff; + arch = (state.dbg_info >> 8) & 0xf; + + ksft_print_msg("%s version %d with %d slots\n", type_name, + arch, slots); + + /* Zero is not currently architecturally valid */ + ksft_test_result(arch, "%s_arch_set\n", type_name); + } else { + ksft_test_result_skip("%s_arch_set\n"); + } +} + static int do_child(void) { if (ptrace(PTRACE_TRACEME, -1, NULL, NULL)) @@ -207,6 +235,8 @@ static int do_parent(pid_t child) ksft_print_msg("Parent is %d, child is %d\n", getpid(), child); test_tpidr(child); + test_hw_debug(child, NT_ARM_HW_WATCH, "NT_ARM_HW_WATCH"); + test_hw_debug(child, NT_ARM_HW_BREAK, "NT_ARM_HW_BREAK"); ret = EXIT_SUCCESS; diff --git a/tools/testing/selftests/arm64/signal/.gitignore b/tools/testing/selftests/arm64/signal/.gitignore index 8ab4c86837fd..839e3a252629 100644 --- a/tools/testing/selftests/arm64/signal/.gitignore +++ b/tools/testing/selftests/arm64/signal/.gitignore @@ -4,7 +4,7 @@ fake_sigreturn_* sme_* ssve_* sve_* -tpidr2_siginfo +tpidr2_* za_* zt_* !*.[ch] diff --git a/tools/testing/selftests/arm64/signal/test_signals_utils.c b/tools/testing/selftests/arm64/signal/test_signals_utils.c index 40be8443949d..0dc948db3a4a 100644 --- a/tools/testing/selftests/arm64/signal/test_signals_utils.c +++ b/tools/testing/selftests/arm64/signal/test_signals_utils.c @@ -249,7 +249,8 @@ static void default_handler(int signum, siginfo_t *si, void *uc) fprintf(stderr, "-- Timeout !\n"); } else { fprintf(stderr, - "-- RX UNEXPECTED SIGNAL: %d\n", signum); + "-- RX UNEXPECTED SIGNAL: %d code %d address %p\n", + signum, si->si_code, si->si_addr); } default_result(current, 1); } diff --git a/tools/testing/selftests/arm64/signal/testcases/tpidr2_restore.c b/tools/testing/selftests/arm64/signal/testcases/tpidr2_restore.c new file mode 100644 index 000000000000..f9a86c00c28c --- /dev/null +++ b/tools/testing/selftests/arm64/signal/testcases/tpidr2_restore.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 ARM Limited + * + * Verify that the TPIDR2 register context in signal frames is restored. + */ + +#include <signal.h> +#include <ucontext.h> +#include <sys/auxv.h> +#include <sys/prctl.h> +#include <unistd.h> +#include <asm/sigcontext.h> + +#include "test_signals_utils.h" +#include "testcases.h" + +#define SYS_TPIDR2 "S3_3_C13_C0_5" + +static uint64_t get_tpidr2(void) +{ + uint64_t val; + + asm volatile ( + "mrs %0, " SYS_TPIDR2 "\n" + : "=r"(val) + : + : "cc"); + + return val; +} + +static void set_tpidr2(uint64_t val) +{ + asm volatile ( + "msr " SYS_TPIDR2 ", %0\n" + : + : "r"(val) + : "cc"); +} + + +static uint64_t initial_tpidr2; + +static bool save_tpidr2(struct tdescr *td) +{ + initial_tpidr2 = get_tpidr2(); + fprintf(stderr, "Initial TPIDR2: %lx\n", initial_tpidr2); + + return true; +} + +static int modify_tpidr2(struct tdescr *td, siginfo_t *si, ucontext_t *uc) +{ + uint64_t my_tpidr2 = get_tpidr2(); + + my_tpidr2++; + fprintf(stderr, "Setting TPIDR2 to %lx\n", my_tpidr2); + set_tpidr2(my_tpidr2); + + return 0; +} + +static void check_tpidr2(struct tdescr *td) +{ + uint64_t tpidr2 = get_tpidr2(); + + td->pass = tpidr2 == initial_tpidr2; + + if (td->pass) + fprintf(stderr, "TPIDR2 restored\n"); + else + fprintf(stderr, "TPIDR2 was %lx but is now %lx\n", + initial_tpidr2, tpidr2); +} + +struct tdescr tde = { + .name = "TPIDR2 restore", + .descr = "Validate that TPIDR2 is restored from the sigframe", + .feats_required = FEAT_SME, + .timeout = 3, + .sig_trig = SIGUSR1, + .init = save_tpidr2, + .run = modify_tpidr2, + .check_result = check_tpidr2, +}; 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