From f0dbe9fa0a437fe27210718c2f1d575b99e26583 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 2 Jul 2015 06:36:00 +0000 Subject: BaseTools: AArch64: use explicit linker scripts Instead of relying on the builtin linker script of GNU ld, which may vary based on binutils version (which is not tightly coupled to the GCC version) and linker command line options, introduce a linker script for AArch64 to be used by all GCC/binutils versions. The script is laid out such that two ELF sections .text and .data are created that map onto the PE/COFF with the same names. By aligning .data to the minimum alignment of .text, and by not adding any additional padding -which is what LD's builtin linker script does- the relative offset between .text and .data is retained after the PE/COFF conversion. This should prevent problems with debuggers and other tooling that are ELF based. Also provided is an overlay linker script that increases the alignment of .text and .data to 64 KB. This is intended for DXE_RUNTIME_DRIVER modules, to make them compatible with the newly introduced Properties Table feature. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17802 6f19259b-4bc3-4df7-8a09-765794883524 --- BaseTools/Conf/tools_def.template | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) (limited to 'BaseTools/Conf') diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template index 88ec2e138d..7edd759095 100644 --- a/BaseTools/Conf/tools_def.template +++ b/BaseTools/Conf/tools_def.template @@ -3821,9 +3821,12 @@ DEFINE GCC_ARM_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -mword-relocations -m DEFINE GCC_AARCH64_CC_FLAGS = DEF(GCC_ALL_CC_FLAGS) -mcmodel=large -mlittle-endian -fno-short-enums -save-temps -fverbose-asm -fsigned-char -ffunction-sections -fdata-sections -fomit-frame-pointer -fno-builtin -Wno-address DEFINE GCC_DLINK_FLAGS_COMMON = -nostdlib --pie DEFINE GCC_IA32_X64_DLINK_COMMON = DEF(GCC_DLINK_FLAGS_COMMON) --gc-sections -DEFINE GCC_ARM_AARCH64_DLINK_COMMON= -Ttext=0x0 --emit-relocs -nostdlib --gc-sections -u $(IMAGE_ENTRY_POINT) -e $(IMAGE_ENTRY_POINT) -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map +DEFINE GCC_ARM_AARCH64_DLINK_COMMON= --emit-relocs -nostdlib --gc-sections -u $(IMAGE_ENTRY_POINT) -e $(IMAGE_ENTRY_POINT) -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map +DEFINE GCC_ARM_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) -Ttext=0x0 +DEFINE GCC_AARCH64_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) --script=$(EDK_TOOLS_PATH)/Scripts/gcc-aarch64-ld-script DEFINE GCC_IA32_X64_ASLDLINK_FLAGS = DEF(GCC_IA32_X64_DLINK_COMMON) --entry _ReferenceAcpiTable -u $(IMAGE_ENTRY_POINT) -DEFINE GCC_ARM_AARCH64_ASLDLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) --entry ReferenceAcpiTable -u $(IMAGE_ENTRY_POINT) +DEFINE GCC_ARM_ASLDLINK_FLAGS = DEF(GCC_ARM_DLINK_FLAGS) --entry ReferenceAcpiTable -u $(IMAGE_ENTRY_POINT) +DEFINE GCC_AARCH64_ASLDLINK_FLAGS = DEF(GCC_AARCH64_DLINK_FLAGS) --entry ReferenceAcpiTable -u $(IMAGE_ENTRY_POINT) DEFINE GCC_IA32_X64_DLINK_FLAGS = DEF(GCC_IA32_X64_DLINK_COMMON) --entry _$(IMAGE_ENTRY_POINT) --file-alignment 0x20 --section-alignment 0x20 -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map DEFINE GCC_IPF_DLINK_FLAGS = -nostdlib -O2 --gc-sections --dll -static --entry $(IMAGE_ENTRY_POINT) --undefined $(IMAGE_ENTRY_POINT) -Map $(DEST_DIR_DEBUG)/$(BASE_NAME).map DEFINE GCC_IPF_OBJCOPY_FLAGS = -I elf64-ia64-little -O efi-bsdrv-ia64 @@ -3866,8 +3869,8 @@ DEFINE GCC46_X64_DLINK_FLAGS = DEF(GCC45_X64_DLINK_FLAGS) DEFINE GCC46_ASM_FLAGS = DEF(GCC45_ASM_FLAGS) DEFINE GCC46_ARM_ASM_FLAGS = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GCC_ASM_FLAGS) -mlittle-endian DEFINE GCC46_ARM_CC_FLAGS = $(ARCHCC_FLAGS) $(PLATFORM_FLAGS) DEF(GCC44_ALL_CC_FLAGS) DEF(GCC_ARM_CC_FLAGS) -fstack-protector -DEFINE GCC46_ARM_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) --oformat=elf32-littlearm -DEFINE GCC46_ARM_ASLDLINK_FLAGS = DEF(GCC_ARM_AARCH64_ASLDLINK_FLAGS) --oformat=elf32-littlearm +DEFINE GCC46_ARM_DLINK_FLAGS = DEF(GCC_ARM_DLINK_FLAGS) --oformat=elf32-littlearm +DEFINE GCC46_ARM_ASLDLINK_FLAGS = DEF(GCC_ARM_ASLDLINK_FLAGS) --oformat=elf32-littlearm DEFINE GCC47_IA32_CC_FLAGS = DEF(GCC46_IA32_CC_FLAGS) DEFINE GCC47_X64_CC_FLAGS = DEF(GCC46_X64_CC_FLAGS) @@ -3881,9 +3884,9 @@ DEFINE GCC47_AARCH64_ASM_FLAGS = $(ARCHASM_FLAGS) $(PLATFORM_FLAGS) DEF(GC 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) DEF(GCC_AARCH64_CC_FLAGS) DEFINE GCC47_ARM_DLINK_FLAGS = DEF(GCC46_ARM_DLINK_FLAGS) -DEFINE GCC47_AARCH64_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) +DEFINE GCC47_AARCH64_DLINK_FLAGS = DEF(GCC_AARCH64_DLINK_FLAGS) DEFINE GCC47_ARM_ASLDLINK_FLAGS = DEF(GCC46_ARM_ASLDLINK_FLAGS) -DEFINE GCC47_AARCH64_ASLDLINK_FLAGS = DEF(GCC_ARM_AARCH64_ASLDLINK_FLAGS) +DEFINE GCC47_AARCH64_ASLDLINK_FLAGS = DEF(GCC_AARCH64_ASLDLINK_FLAGS) DEFINE GCC48_IA32_CC_FLAGS = DEF(GCC47_IA32_CC_FLAGS) DEFINE GCC48_X64_CC_FLAGS = DEF(GCC47_X64_CC_FLAGS) @@ -3897,9 +3900,9 @@ 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_ARM_DLINK_FLAGS = DEF(GCC47_ARM_DLINK_FLAGS) -DEFINE GCC48_AARCH64_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) +DEFINE GCC48_AARCH64_DLINK_FLAGS = DEF(GCC47_AARCH64_DLINK_FLAGS) DEFINE GCC48_ARM_ASLDLINK_FLAGS = DEF(GCC47_ARM_ASLDLINK_FLAGS) -DEFINE GCC48_AARCH64_ASLDLINK_FLAGS = DEF(GCC_ARM_AARCH64_ASLDLINK_FLAGS) +DEFINE GCC48_AARCH64_ASLDLINK_FLAGS = DEF(GCC47_AARCH64_ASLDLINK_FLAGS) DEFINE GCC49_IA32_CC_FLAGS = DEF(GCC48_IA32_CC_FLAGS) DEFINE GCC49_X64_CC_FLAGS = DEF(GCC48_X64_CC_FLAGS) @@ -3913,9 +3916,9 @@ 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 = DEF(GCC48_AARCH64_CC_FLAGS) DEFINE GCC49_ARM_DLINK_FLAGS = DEF(GCC48_ARM_DLINK_FLAGS) -DEFINE GCC49_AARCH64_DLINK_FLAGS = DEF(GCC_ARM_AARCH64_DLINK_COMMON) +DEFINE GCC49_AARCH64_DLINK_FLAGS = DEF(GCC48_AARCH64_DLINK_FLAGS) DEFINE GCC49_ARM_ASLDLINK_FLAGS = DEF(GCC48_ARM_ASLDLINK_FLAGS) -DEFINE GCC49_AARCH64_ASLDLINK_FLAGS = DEF(GCC_ARM_AARCH64_ASLDLINK_FLAGS) +DEFINE GCC49_AARCH64_ASLDLINK_FLAGS = DEF(GCC48_AARCH64_ASLDLINK_FLAGS) #################################################################################### # -- cgit v1.2.3