Commit 80652cc0 authored by Joey Gouly's avatar Joey Gouly Committed by Catalin Marinas
Browse files

selftests/arm64: add HWCAP2_LRCPC3 test 



Add a test for the newly added HWCAP2_LRCPC3.

Signed-off-by: default avatarJoey Gouly <joey.gouly@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20230919162757.2707023-3-joey.gouly@arm.com


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 338a835f

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

+20 −0
Original line number Diff line number Diff line
@@ -295,6 +295,19 @@ static void uscat_sigbus(void) 
	asm volatile(".inst 0xb820003f" : : : );

}



static void lrcpc3_sigill(void)

{

	int data[2] = { 1, 2 };



	register int *src asm ("x0") = data;

	register int data0 asm ("w2") = 0;

	register int data1 asm ("w3") = 0;



	/* LDIAPP w2, w3, [x0] */

	asm volatile(".inst 0x99431802"

	              : "=r" (data0), "=r" (data1) : "r" (src) :);

}



static const struct hwcap_data {

	const char *name;

	unsigned long at_hwcap;
@@ -354,6 +367,13 @@ static const struct hwcap_data { 
		.cpuinfo = "ilrcpc",

		.sigill_fn = ilrcpc_sigill,

	},

	{

		.name = "LRCPC3",

		.at_hwcap = AT_HWCAP2,

		.hwcap_bit = HWCAP2_LRCPC3,

		.cpuinfo = "lrcpc3",

		.sigill_fn = lrcpc3_sigill,

	},

	{

		.name = "LSE",

		.at_hwcap = AT_HWCAP,