| Feder Liang | 5519438 | 2021-11-22 16:45:33 +0800 | [diff] [blame] | 1 | #------------------------------------------------------------------------------- |
| 2 | # Copyright (c) 2022, Arm Limited. All rights reserved. |
| 3 | # |
| 4 | # SPDX-License-Identifier: BSD-3-Clause |
| 5 | # |
| 6 | #------------------------------------------------------------------------------- |
| 7 | |
| 8 | ###################### Check compiler for FP vulnerability ##################### |
| 9 | |
| 10 | # Check compiler with mitigation for the VLLDM instruction security vulnerability or not. |
| 11 | # For more information, please check https://developer.arm.com/support/arm-security-updates/vlldm-instruction-security-vulnerability. |
| 12 | if (CONFIG_TFM_FP STREQUAL "hard") |
| 13 | # Create test C file. |
| 14 | file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/cvetest.c "int x;") |
| 15 | # Compile with mitigation -mfix-cmse-cve-2021-35465. |
| 16 | execute_process ( |
| 17 | COMMAND ${CMAKE_C_COMPILER} -mfix-cmse-cve-2021-35465 -S ${CMAKE_CURRENT_BINARY_DIR}/cvetest.c -o ${CMAKE_CURRENT_BINARY_DIR}/cvetest.s |
| 18 | RESULT_VARIABLE ret |
| 19 | ERROR_VARIABLE err |
| 20 | ) |
| 21 | file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/cvetest.c) |
| 22 | # Check result |
| 23 | if(NOT ret EQUAL 0) |
| 24 | message(FATAL_ERROR "To enable FPU usage in SPE and NSPE both, please use the compiler with '-mfix-cmse-cve-2021-35465' support") |
| 25 | else() |
| 26 | file(REMOVE ${CMAKE_CURRENT_BINARY_DIR}/cvetest.s) |
| 27 | endif() |
| 28 | endif() |