From e38eb2595b86434f2d488b0d575af71f07b6428f Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Fri, 14 Jul 2017 18:09:03 +0100 Subject: [PATCH] CryptoPkg/OpensslLib AARCH64: clear XIP CC flags Commit 0df6c8c157af ("BaseTools/tools_def AARCH64: avoid SIMD registers in XIP code") updated the compiler flags used by AARCH64 when building modules (including BASE libraries) that may execute before the MMU is enabled. This broke the build for OpensslLib/OpensslLibCrypto because the SIMD register file is shared with the FPU, and since OpenSSL contains some references to float/double types (which are mostly unused for UEFI btw), disabling floating point prevents the compiler from building OpenSSL at all. So for OpensslLib[Crypto], we need to override the XIP CC flags, to remove the -mgeneral-regs-only compiler flag again. When introducing the support for XIP CC flags, we were aware that this would affect BASE libraries as well, but were not expecting this to have any performance impact. However, in the case of software crypto, it makes sense not to needlessly inhibit the compiler's ability to generate fast code, and even if OpenssLib is a BASE library, it is guaranteed not to run with the MMU off. So omit -mstrict-align from the local XIP CC flags override as well. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel Reviewed-by: Leif Lindholm Acked-by: Laszlo Ersek Reviewed-by: Long Qin --- CryptoPkg/Library/OpensslLib/OpensslLib.inf | 11 +++++++++++ CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf | 11 +++++++++++ 2 files changed, 22 insertions(+) diff --git a/CryptoPkg/Library/OpensslLib/OpensslLib.inf b/CryptoPkg/Library/OpensslLib/OpensslLib.inf index cbabb34bdd..1d15da6660 100644 --- a/CryptoPkg/Library/OpensslLib/OpensslLib.inf +++ b/CryptoPkg/Library/OpensslLib/OpensslLib.inf @@ -580,3 +580,14 @@ RVCT:*_*_ARM_CC_FLAGS = $(OPENSSL_FLAGS) --library_interface=aeabi_clib99 --diag_suppress=1296,1295,550,1293,111,68,177,223,144,513,188,128,546,1,3017 -JCryptoPkg/Include XCODE:*_*_IA32_CC_FLAGS = -mmmx -msse -U_WIN32 -U_WIN64 $(OPENSSL_FLAGS) -w XCODE:*_*_X64_CC_FLAGS = -mmmx -msse -U_WIN32 -U_WIN64 $(OPENSSL_FLAGS) -w + + # + # AARCH64 uses strict alignment and avoids SIMD registers for code that may execute + # with the MMU off. This involves SEC, PEI_CORE and PEIM modules as well as BASE + # libraries, given that they may be included into such modules. + # This library, even though of the BASE type, is never used in such cases, and + # avoiding the SIMD register file (which is shared with the FPU) prevents the + # compiler from successfully building some of the OpenSSL source files that + # use floating point types, so clear the flags here. + # + GCC:*_*_AARCH64_CC_XIPFLAGS == diff --git a/CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf b/CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf index 026b551bca..6fc8884da4 100644 --- a/CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf +++ b/CryptoPkg/Library/OpensslLib/OpensslLibCrypto.inf @@ -541,3 +541,14 @@ RVCT:*_*_ARM_CC_FLAGS = $(OPENSSL_FLAGS) --library_interface=aeabi_clib99 --diag_suppress=1296,1295,550,1293,111,68,177,223,144,513,188,128,546,1,3017 -JCryptoPkg/Include XCODE:*_*_IA32_CC_FLAGS = -mmmx -msse -U_WIN32 -U_WIN64 $(OPENSSL_FLAGS) -w XCODE:*_*_X64_CC_FLAGS = -mmmx -msse -U_WIN32 -U_WIN64 $(OPENSSL_FLAGS) -w + + # + # AARCH64 uses strict alignment and avoids SIMD registers for code that may execute + # with the MMU off. This involves SEC, PEI_CORE and PEIM modules as well as BASE + # libraries, given that they may be included into such modules. + # This library, even though of the BASE type, is never used in such cases, and + # avoiding the SIMD register file (which is shared with the FPU) prevents the + # compiler from successfully building some of the OpenSSL source files that + # use floating point types, so clear the flags here. + # + GCC:*_*_AARCH64_CC_XIPFLAGS == -- 2.39.2