AArch64Cap.c File Reference

#include <openssl/types.h>
#include "crypto/arm_arch.h"
#include <Library/BaseLib.h>

Go to the source code of this file.

Macros
#define	GET_BITFIELD(value, shift, mask)    ((value >> shift) & mask)

Functions
void	OPENSSL_cpuid_setup (void)
uint32_t	OPENSSL_rdtsc (void)

Variables
UINT32	OPENSSL_armcap_P = 0

Detailed Description

Arm capabilities probing.

Copyright (c) 2023 - 2024, Arm Limited. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file AArch64Cap.c.

Macro Definition Documentation

GET_BITFIELD

#define GET_BITFIELD	(		value,
			shift,
			mask
	)		((value >> shift) & mask)

Get bits from a value.

Shift the input value from 'shift' bits and apply 'mask'.

Parameters

value	The value to get the bits from.
shift	Index of the bits to read.
mask	Mask to apply to the value once shifted.

Returns

The desired bitfield from the value.

Definition at line 24 of file AArch64Cap.c.

Function Documentation

OPENSSL_cpuid_setup()

void OPENSSL_cpuid_setup

(

void

)

Definition at line 30 of file AArch64Cap.c.

OPENSSL_rdtsc()

uint32_t OPENSSL_rdtsc

(

void

)

Read system counter value.

Used to get some non-trusted entropy.

Returns

Lower bits of the physical counter.

Definition at line 102 of file AArch64Cap.c.

Variable Documentation

OPENSSL_armcap_P

UINT32 OPENSSL_armcap_P = 0

Definition at line 27 of file AArch64Cap.c.