Add RCpc load-acquire and various features check in the set of hwcaps.

Test log as shown below: ~~~ # RCpc load-acquire present ok 47 cpuinfo_match_RCpc load-acquire ok 48 sigill_RCpc load-acquire # RCpc load-acquire2 present ok 49 cpuinfo_match_RCpc load-acquire2 ok 50 sigill_RCpc load-acquire2 ~~~

Signed-off-by: Zeng Heng zengheng4@huawei.com --- tools/testing/selftests/arm64/abi/hwcap.c | 26 +++++++++++++++++++++++ 1 file changed, 26 insertions(+)

diff --git a/tools/testing/selftests/arm64/abi/hwcap.c b/tools/testing/selftests/arm64/abi/hwcap.c index 93333a90bf3a..ccb3f6adb68f 100644 --- a/tools/testing/selftests/arm64/abi/hwcap.c +++ b/tools/testing/selftests/arm64/abi/hwcap.c @@ -194,6 +194,18 @@ static void svebf16_sigill(void) asm volatile(".inst 0x658aa000" : : : "z0"); }

+static void lrcpc_sigill(void) +{ + /* LDAPR W0, [SP, #0] */ + asm volatile(".inst 0xb8bfc3e0" : : : ); +} + +static void ilrcpc_sigill(void) +{ + /* LDAPUR W0, [SP, #8] */ + asm volatile(".inst 0x994083e0" : : : ); +} + static const struct hwcap_data { const char *name; unsigned long at_hwcap; @@ -364,6 +376,20 @@ static const struct hwcap_data { .hwcap_bit = HWCAP2_SVE_EBF16, .cpuinfo = "sveebf16", }, + { + .name = "RCpc load-acquire", + .at_hwcap = AT_HWCAP, + .hwcap_bit = HWCAP_LRCPC, + .cpuinfo = "lrcpc", + .sigill_fn = lrcpc_sigill, + }, + { + .name = "RCpc load-acquire2", + .at_hwcap = AT_HWCAP, + .hwcap_bit = HWCAP_ILRCPC, + .cpuinfo = "ilrcpc", + .sigill_fn = ilrcpc_sigill, + }, };

static bool seen_sigill;