| /* |
| * 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 |