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Kernel/riscv64: Explicitly discard temporary local symbols

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This is for some reason needed for riscv64 clang, as otherwise the
kernel.map file would grow too big to fit in its section inside the
kernel image.
None of our other architectures have temporary locals in their
kernel.map.
This commit is contained in:
Sönke Holz
2023-11-23 01:38:14 +01:00
committed by Andrew Kaster
parent da33e2a564
commit dfce2f6341
1 changed files with 4 additions and 1 deletions
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5
Kernel/CMakeLists.txt
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@@ -759,7 +759,10 @@ if("${SERENITY_ARCH}" STREQUAL "aarch64")
target_link_options(Kernel PRIVATE LINKER:-T ${CMAKE_CURRENT_SOURCE_DIR}/Arch/aarch64/linker.ld -nostdlib LINKER:--no-pie)
set_target_properties(Kernel PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Arch/aarch64/linker.ld)
elseif("${SERENITY_ARCH}" STREQUAL "riscv64")
target_link_options(Kernel PRIVATE LINKER:-T ${CMAKE_CURRENT_SOURCE_DIR}/Arch/riscv64/linker.ld -nostdlib LINKER:--no-pie)
# The final kernel binary for some reason includes temporary local symbols on riscv64 clang, which causes kernel.map to be too big to fit in its section in the kernel.
# Explicitly pass -X to the linker to remove them.
target_link_options(Kernel PRIVATE LINKER:-T ${CMAKE_CURRENT_SOURCE_DIR}/Arch/riscv64/linker.ld -nostdlib LINKER:--no-pie LINKER:-X)
set_target_properties(Kernel PROPERTIES LINK_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/Arch/riscv64/linker.ld)
elseif ("${SERENITY_ARCH}" STREQUAL "x86_64")
add_custom_command(