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BaseTools AARCH64: build XIP modules with strict alignment 

GCC for AARCH64 recognizes byte swapping load and store sequences
and may replace them with wider loads or stores combined with rev
instructions. In some cases (i.e., with GCC version 5 and later)
this may result in unaligned accesses, which are not allowed before
we turn the MMU on.

So build any modules or static libraries that may execute with the MMU
off with -mstrict-align. Other modules don't need this switch, so we
can remove it from the CLANG35/AARCH64 common CC flags.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19638 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel 2016-01-11 08:50:49 +00:00 committed by abiesheuvel
parent 3a02a87f9f
commit d764d59849
1 changed files with 8 additions and 1 deletions
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9
BaseTools/Conf/tools_def.template
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@ -4324,6 +4324,7 @@ DEFINE GCC_X64_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -mno-red-zone -Wno-ad
DEFINE GCC_IPF_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -minline-int-divide-min-latency
DEFINE GCC_ARM_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian -mabi=aapcs -fno-short-enums -save-temps -fsigned-char -ffunction-sections -fdata-sections -fomit-frame-pointer -Wno-address -mthumb -mfloat-abi=soft
DEFINE GCC_AARCH64_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -mlittle-endian -fno-short-enums -save-temps -fverbose-asm -fsigned-char -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-builtin -Wno-address -fno-asynchronous-unwind-tables
DEFINE GCC_AARCH64_CC_XIPFLAGS = -mstrict-align
DEFINE GCC_DLINK_FLAGS_COMMON = -nostdlib --pie
DEFINE GCC_DLINK2_FLAGS_COMMON = --script=$(EDK_TOOLS_PATH)/Scripts/GccBase.lds
DEFINE GCC_IA32_X64_DLINK_COMMON = DEF(GCC_DLINK_FLAGS_COMMON) --gc-sections
@ -4398,6 +4399,7 @@ DEFINE GCC47_ARM_ASM_FLAGS = DEF(GCC46_ARM_ASM_FLAGS)
DEFINE GCC47_AARCH64_ASM_FLAGS = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian
DEFINE GCC47_ARM_CC_FLAGS = DEF(GCC46_ARM_CC_FLAGS) -mno-unaligned-access
DEFINE GCC47_AARCH64_CC_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC44_ALL_CC_FLAGS) -mcmodel=large DEF(GCC_AARCH64_CC_FLAGS)
DEFINE GCC47_AARCH64_CC_XIPFLAGS = DEF(GCC_AARCH64_CC_XIPFLAGS)
DEFINE GCC47_ARM_DLINK_FLAGS = DEF(GCC46_ARM_DLINK_FLAGS)
DEFINE GCC47_ARM_DLINK2_FLAGS = DEF(GCC46_ARM_DLINK2_FLAGS)
DEFINE GCC47_AARCH64_DLINK_FLAGS = DEF(GCC_AARCH64_DLINK_FLAGS)
@ -4418,6 +4420,7 @@ DEFINE GCC48_ARM_ASM_FLAGS = DEF(GCC47_ARM_ASM_FLAGS)
DEFINE GCC48_AARCH64_ASM_FLAGS = DEF(GCC47_AARCH64_ASM_FLAGS)
DEFINE GCC48_ARM_CC_FLAGS = DEF(GCC47_ARM_CC_FLAGS)
DEFINE GCC48_AARCH64_CC_FLAGS = DEF(GCC47_AARCH64_CC_FLAGS)
DEFINE GCC48_AARCH64_CC_XIPFLAGS = DEF(GCC47_AARCH64_CC_XIPFLAGS)
DEFINE GCC48_ARM_DLINK_FLAGS = DEF(GCC47_ARM_DLINK_FLAGS)
DEFINE GCC48_ARM_DLINK2_FLAGS = DEF(GCC47_ARM_DLINK2_FLAGS)
DEFINE GCC48_AARCH64_DLINK_FLAGS = DEF(GCC47_AARCH64_DLINK_FLAGS)
@ -4438,6 +4441,7 @@ DEFINE GCC49_ARM_ASM_FLAGS = DEF(GCC48_ARM_ASM_FLAGS)
DEFINE GCC49_AARCH64_ASM_FLAGS = DEF(GCC48_AARCH64_ASM_FLAGS)
DEFINE GCC49_ARM_CC_FLAGS = DEF(GCC48_ARM_CC_FLAGS)
DEFINE GCC49_AARCH64_CC_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC44_ALL_CC_FLAGS) -mcmodel=tiny DEF(GCC_AARCH64_CC_FLAGS)
DEFINE GCC49_AARCH64_CC_XIPFLAGS = DEF(GCC48_AARCH64_CC_XIPFLAGS)
DEFINE GCC49_ARM_DLINK_FLAGS = DEF(GCC48_ARM_DLINK_FLAGS)
DEFINE GCC49_ARM_DLINK2_FLAGS = DEF(GCC48_ARM_DLINK2_FLAGS)
DEFINE GCC49_AARCH64_DLINK_FLAGS = DEF(GCC48_AARCH64_DLINK_FLAGS)
@ -4897,6 +4901,7 @@ RELEASE_GCC47_ARM_CC_FLAGS = DEF(GCC47_ARM_CC_FLAGS) -Wno-unused-but-set-v
*_GCC47_AARCH64_PP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
*_GCC47_AARCH64_RC_FLAGS = DEF(GCC_AARCH64_RC_FLAGS)
*_GCC47_AARCH64_VFRPP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
*_GCC47_AARCH64_CC_XIPFLAGS = DEF(GCC47_AARCH64_CC_XIPFLAGS)
DEBUG_GCC47_AARCH64_CC_FLAGS = DEF(GCC47_AARCH64_CC_FLAGS) -O0
RELEASE_GCC47_AARCH64_CC_FLAGS = DEF(GCC47_AARCH64_CC_FLAGS) -Wno-unused-but-set-variable
@ -5024,6 +5029,7 @@ RELEASE_GCC48_ARM_CC_FLAGS = DEF(GCC48_ARM_CC_FLAGS) -Wno-unused-but-set-v
*_GCC48_AARCH64_PP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
*_GCC48_AARCH64_RC_FLAGS = DEF(GCC_AARCH64_RC_FLAGS)
*_GCC48_AARCH64_VFRPP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
*_GCC48_AARCH64_CC_XIPFLAGS = DEF(GCC48_AARCH64_CC_XIPFLAGS)
DEBUG_GCC48_AARCH64_CC_FLAGS = DEF(GCC48_AARCH64_CC_FLAGS) -O0
RELEASE_GCC48_AARCH64_CC_FLAGS = DEF(GCC48_AARCH64_CC_FLAGS) -Wno-unused-but-set-variable
@ -5151,6 +5157,7 @@ RELEASE_GCC49_ARM_CC_FLAGS = DEF(GCC49_ARM_CC_FLAGS) -Wno-unused-but-set-v
*_GCC49_AARCH64_PP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_PP_FLAGS)
*_GCC49_AARCH64_RC_FLAGS = DEF(GCC_AARCH64_RC_FLAGS)
*_GCC49_AARCH64_VFRPP_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_VFRPP_FLAGS)
*_GCC49_AARCH64_CC_XIPFLAGS = DEF(GCC49_AARCH64_CC_XIPFLAGS)
DEBUG_GCC49_AARCH64_CC_FLAGS = DEF(GCC49_AARCH64_CC_FLAGS) -O0
RELEASE_GCC49_AARCH64_CC_FLAGS = DEF(GCC49_AARCH64_CC_FLAGS) -Wno-unused-but-set-variable
@ -5186,7 +5193,7 @@ DEFINE CLANG35_AARCH64_TARGET = -target aarch64-none-linux-gnu
DEFINE CLANG35_WARNING_OVERRIDES = -Wno-parentheses-equality -Wno-tautological-compare -Wno-tautological-constant-out-of-range-compare -Wno-empty-body
DEFINE CLANG35_ARM_CC_FLAGS = DEF(GCC_ARM_CC_FLAGS) DEF(CLANG35_ARM_TARGET) -mstrict-align -mllvm -arm-use-movt=0 DEF(CLANG35_WARNING_OVERRIDES)
DEFINE CLANG35_AARCH64_CC_FLAGS = DEF(GCC_AARCH64_CC_FLAGS) DEF(CLANG35_AARCH64_TARGET) -mcmodel=small -mstrict-align DEF(CLANG35_WARNING_OVERRIDES)
DEFINE CLANG35_AARCH64_CC_FLAGS = DEF(GCC_AARCH64_CC_FLAGS) DEF(CLANG35_AARCH64_TARGET) -mcmodel=small DEF(CLANG35_WARNING_OVERRIDES)
##################
# CLANG35 ARM definitions