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Build with 16K page sizes in mind on aarch64

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By default binutils on buildroot aligns sections to 4kb boundaries, but
there are several 16k only linux distros out there now that default to
16kb pages.

With this change the elf files will have their sections aligned to 16kb
boundaries which should ensure binaries produced with the toolchain work
on most aarch64 linuxes.
This commit is contained in:
HP van Braam
2023-12-11 16:24:14 +01:00
committed by Hein-Pieter van Braam
parent d18f672849
commit 689b43e9a0
1 changed files with 4 additions and 3 deletions
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7
arch/arch.mk
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@@ -19,14 +19,15 @@ GCC_TARGET_FLOAT_ABI := $(call qstrip,$(BR2_GCC_TARGET_FLOAT_ABI))
GCC_TARGET_MODE := $(call qstrip,$(BR2_GCC_TARGET_MODE))
# Explicitly set LD's "max-page-size" instead of relying on some defaults
ifeq ($(BR2_ARC_PAGE_SIZE_4K)$(BR2_ARM64_PAGE_SIZE_4K),y)
ifeq ($(BR2_ARC_PAGE_SIZE_4K),y)
ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096
else ifeq ($(BR2_ARC_PAGE_SIZE_8K),y)
ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=8192 -Wl,-z,common-page-size=8192
else ifeq ($(BR2_ARC_PAGE_SIZE_16K),y)
ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=16384 -Wl,-z,common-page-size=16384
else ifeq ($(BR2_ARM64_PAGE_SIZE_64K),y)
ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=65536 -Wl,-z,common-page-size=65536
else ifeq ($(BR2_aarch64),y)
ARCH_TOOLCHAIN_WRAPPER_OPTS += -Wl,-z,max-page-size=16384 -Wl,-z,common-page-size=16384
else
endif
# Include any architecture specific makefiles.