/*
* Copyright ( c ) 2023 , Google Inc . All rights reserved
*
* Permission is hereby granted , free of charge , to any person obtaining
* a copy of this software and associated documentation files
* ( the " Software " ) , to deal in the Software without restriction ,
* including without limitation the rights to use , copy , modify , merge ,
* publish , distribute , sublicense , and / or sell copies of the Software ,
* and to permit persons to whom the Software is furnished to do so ,
* subject to the following conditions :
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED " AS IS " , WITHOUT WARRANTY OF ANY KIND ,
* EXPRESS OR IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY , FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT .
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM , DAMAGES OR OTHER LIABILITY , WHETHER IN AN ACTION OF CONTRACT ,
* TORT OR OTHERWISE , ARISING FROM , OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE .
*/
#include <asm.h>
#include <arch/asm_macros.h>
#include <err.h>
.arch_extension pauth
.section .text
/**
* int pactest_autia ( uint64_t address , uint64_t modifier , uint64_t * result )
* - Function to test autia instruction ( instruction A - key ) .
*
* This checks the passed address is authenticated with the modifier and IA key ,
* and returns the pointer in * result if FEAT_FPAC is not implemented .
*
* Returns ERR_FAULT if the PAC instruction faults ( FEAT_FPAC ) .
* Return 0 if the PAC check does not fault , in which case * result is updated .
*/
FUNCTION(pactest_autia)
set_fault_handler .Lpactest_fault
autia x0, x1
str x0, [x2]
mov x0, #0
ret
/**
* int pactest_autib ( uint64_t address , uint64_t modifier , uint64_t * result )
* - Function to test autib instruction ( instruction B - key ) .
*
* This checks the passed address is authenticated with the modifier and IB key ,
* and returns the pointer in * result if FEAT_FPAC is not implemented .
*
* Returns ERR_FAULT if the PAC instruction faults ( FEAT_FPAC ) .
* Return 0 if the PAC check does not fault , in which case * result is updated .
*/
FUNCTION(pactest_autib)
set_fault_handler .Lpactest_fault
autib x0, x1
str x0, [x2]
mov x0, #0
ret
/**
* int pactest_autda ( uint64_t address , uint64_t modifier , uint64_t * result )
* - Function to test autda instruction ( data A - key ) .
*
* This checks the passed address is authenticated with the modifier and DA key ,
* and returns the pointer in * result if FEAT_FPAC is not implemented .
*
* Returns ERR_FAULT if the PAC instruction faults ( FEAT_FPAC ) .
* Return 0 if the PAC check does not fault , in which case * result is updated .
*/
FUNCTION(pactest_autda)
set_fault_handler .Lpactest_fault
autda x0, x1
str x0, [x2]
mov x0, #0
ret
/**
* int pactest_autdb ( uint64_t address , uint64_t modifier , uint64_t * result )
* - Function to test autdb instruction ( data B - key ) .
*
* This checks the passed address is authenticated with the modifier and DB key ,
* and returns the pointer in * result if FEAT_FPAC is not implemented .
*
* Returns ERR_FAULT if the PAC instruction faults ( FEAT_FPAC ) .
* Return 0 if the PAC check does not fault , in which case * result is updated .
*/
FUNCTION(pactest_autdb)
set_fault_handler .Lpactest_fault
autdb x0, x1
str x0, [x2]
mov x0, #0
ret
.Lpactest_fault:
bti jc
mov x0, #ERR_FAULT
ret
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