Commit d70175b1 authored by Joey Gouly's avatar Joey Gouly Committed by Will Deacon
Browse files

selftests/arm64: add HWCAP2_HBC test 



Add a test for the newly added HWCAP2_HBC.

Signed-off-by: default avatarJoey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20230804143746.3900803-3-joey.gouly@arm.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 7f86d128

tools/testing/selftests/arm64/abi/hwcap.c

+15 −0
Original line number Diff line number Diff line
@@ -208,6 +208,13 @@ static void svebf16_sigill(void) 
	asm volatile(".inst 0x658aa000" : : : "z0");

}



static void hbc_sigill(void)

{

	/* BC.EQ +4 */

	asm volatile("cmp xzr, xzr\n"

		     ".inst 0x54000030" : : : "cc");

}



static const struct hwcap_data {

	const char *name;

	unsigned long at_hwcap;
@@ -386,6 +393,14 @@ static const struct hwcap_data { 
		.hwcap_bit = HWCAP2_SVE_EBF16,

		.cpuinfo = "sveebf16",

	},

	{

		.name = "HBC",

		.at_hwcap = AT_HWCAP2,

		.hwcap_bit = HWCAP2_HBC,

		.cpuinfo = "hbc",

		.sigill_fn = hbc_sigill,

		.sigill_reliable = true,

	},

};



static bool seen_sigill;