Since debugging tools on ARM usually take the ELF image as input, while the target runs the PE/COFF version, we need to take special care to ensure that the two look identical in memory.
The minimum section alignment imposed by GenFw is 32 bytes, so introduce a RVCT scatter file that sets this alignment for the .data section (and subsequent .bss section. At the same time, set the start offset to 0x220 bytes (which is the size of our 32-bit PE/COFF header) so that the memory layouts are identical between ELF and PE/COFF. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <[email protected]> --- BaseTools/Conf/tools_def.template | 2 +- BaseTools/Scripts/Rvct-Align32.sct | 25 ++++++++++++++++++++ 2 files changed, 26 insertions(+), 1 deletion(-) diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template index db08e252d2b9..4449ddf1b6ec 100644 --- a/BaseTools/Conf/tools_def.template +++ b/BaseTools/Conf/tools_def.template @@ -6617,7 +6617,7 @@ RELEASE_XCODE5_X64_CC_FLAGS = -target x86_64-pc-win32-macho -c -Os -W DEFINE RVCT_ALL_ASM_FLAGS = --diag_suppress=1786 --diag_error=warning --apcs /interwork DEFINE RVCT_ALL_CC_FLAGS = --c90 -c --no_autoinline --asm --gnu --apcs /interwork --signed_chars --no_unaligned_access --split_sections --enum_is_int --preinclude AutoGen.h --diag_suppress=186 --diag_warning 167 --diag_error=warning --diag_style=ide --protect_stack -DEFINE RVCT_ALL_DLINK_FLAGS = --ro-base 0 --no_scanlib --reloc --no_exceptions --datacompressor off --strict --symbols --diag_style=ide --no_legacyalign +DEFINE RVCT_ALL_DLINK_FLAGS = --no_scanlib --no_exceptions --datacompressor off --strict --symbols --diag_style=ide --no_legacyalign --scatter $(EDK_TOOLS_PATH)/Scripts/Rvct-Align32.sct #################################################################################### # diff --git a/BaseTools/Scripts/Rvct-Align32.sct b/BaseTools/Scripts/Rvct-Align32.sct new file mode 100644 index 000000000000..22d3d09c8e94 --- /dev/null +++ b/BaseTools/Scripts/Rvct-Align32.sct @@ -0,0 +1,25 @@ +/** @file + + Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR> + + This program and the accompanying materials are licensed and made available under + the terms and conditions of the BSD License that accompanies this distribution. + The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php. + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +REGION 0x0 { + ER_RO 0x220 FIXED { + * (+RO) + } + ER_RW +0 ALIGN 32 { + * (+RW) + } + ER_ZI +0 { + * (+ZI) + } +} -- 1.9.1 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
