bc28c3df6f
Toolchain failed to bootstrap with LP64F and LP64S ABIs.
As reported by Julien in [1]:
Testing the "lp64f" ABI with commands:
cat >.config <<EOF
BR2_loongarch64=y
BR2_LOONGARCH_FPU_32=y
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF=y
BR2_TARGET_ROOTFS_EXT2=y
# BR2_TARGET_ROOTFS_TAR is not set
EOF
make olddefconfig
make
fails in host-gcc-initial with output:
Assembler messages:
/tmp/ccEkwSsD.s:28: Error: register save offset not a multiple of 8
/tmp/ccEkwSsD.s:30: Error: register save offset not a multiple of 8
/tmp/ccEkwSsD.s:50: Error: register save offset not a multiple of 8
See also autobuilder failures such as [2].
Testing the "lp46s" ABI with commands:
cat >.config <<EOF
BR2_loongarch64=y
BR2_LOONGARCH_FPU_NONE=y
BR2_LINUX_KERNEL=y
BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y
BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF=y
BR2_TARGET_ROOTFS_EXT2=y
# BR2_TARGET_ROOTFS_TAR is not set
EOF
make olddefconfig
make
fails in host-gcc-final with output:
/buildroot/output/host/loongarch64-buildroot-linux-gnusf/bin/ld: cannot find crti.o: No such file or directory
/buildroot/output/host/loongarch64-buildroot-linux-gnusf/bin/ld: cannot find -lc: No such file or directory
/buildroot/output/host/loongarch64-buildroot-linux-gnusf/bin/ld: cannot find crtn.o: No such file or directory
See also autobuilder failures with as [3].
This commit marks those ABIs as broken at the moment to allow time
for investigation. Also, since gcc defaults to the "lp64d" ABI which
requires a 64bit FPU is present, the BR2_LOONGARCH_FPU_32 and
BR2_LOONGARCH_FPU_NONE options also needs to be marked as broken
as well. See [4].
[1] https://lore.kernel.org/buildroot/e17da108d1fb4e6abda26445dc053b35@free.fr/
[2] https://autobuild.buildroot.org/results/f98570293823867e6c43a1672e1a4b43ca1e4be5
[3] https://autobuild.buildroot.org/results/cf56c37fabcae964dbf4f96eb43a7e4d964452b6
[4] https://lore.kernel.org/buildroot/7b0f1cb629fce8a57d9b644b8beb8b2a@free.fr/
Cc: Mingcong Bai <jeffbai@aosc.io>
Cc: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
[Julien:
- add link to mailing list discussion
- add configuration to reproduce issues to help future investigations
- add links to autobuilder failures in commit log
- mark BR2_LOONGARCH_FPU_{32,NONE} as broken
]
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>
139 lines
3.3 KiB
Plaintext
139 lines
3.3 KiB
Plaintext
# LoongArch CPU
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choice
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prompt "Target Architecture Variant"
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default BR2_loongarch64_generic if BR2_ARCH_IS_64
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config BR2_loongarch64_generic
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bool "Generic LoongArch 64-bit"
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depends on BR2_ARCH_IS_64
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help
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Generic LoongArch 64-bit processor.
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config BR2_loongarch64_v1_0
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bool "LoongArch64 ISA version 1.0"
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depends on BR2_ARCH_IS_64
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select BR2_ARCH_NEEDS_GCC_AT_LEAST_14
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help
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LoongArch64 ISA version 1.0 processor.
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config BR2_loongarch64_v1_1
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bool "LoongArch64 ISA version 1.1"
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depends on BR2_ARCH_IS_64
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select BR2_ARCH_NEEDS_GCC_AT_LEAST_14
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help
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LoongArch64 ISA version 1.1 processor.
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endchoice
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choice
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prompt "FPU Type"
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default BR2_LOONGARCH_FPU_64
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config BR2_LOONGARCH_FPU_64
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bool "64"
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help
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Allow the use of hardware floating-point instructions for
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32-bit and 64-bit operations.
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config BR2_LOONGARCH_FPU_32
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bool "32"
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# Only supported by lp64s and lp64f ABIs which are marked as broken
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depends on BR2_BROKEN
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help
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Allow the use of hardware floating-point instructions for
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32-bit operations only.
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config BR2_LOONGARCH_FPU_NONE
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bool "none"
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# Only supported by lp64s ABI which is marked as broken
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depends on BR2_BROKEN
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help
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Prevent the use of hardware floating-point instructions.
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endchoice
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choice
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prompt "SIMD Type"
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default BR2_LOONGARCH_SIMD_NONE
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config BR2_LOONGARCH_SIMD_NONE
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bool "none"
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help
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Prevent the use of hardware SIMD instructions.
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config BR2_LOONGARCH_SIMD_LSX
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bool "LSX"
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depends on BR2_LOONGARCH_FPU_64
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help
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Enable generating instructions from the 128-bit LoongArch SIMD
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Extension (LSX).
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config BR2_LOONGARCH_SIMD_LASX
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bool "LASX"
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depends on BR2_LOONGARCH_FPU_64
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help
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Enable generating instructions from the 256-bit LoongArch
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Advanced SIMD Extension (LASX) and the 128-bit LoongArch
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SIMD Extension (LSX).
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endchoice
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choice
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prompt "Target ABI"
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default BR2_LOONGARCH_ABI_LP64D if BR2_ARCH_IS_64 && BR2_LOONGARCH_FPU_64
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default BR2_LOONGARCH_ABI_LP64F if BR2_ARCH_IS_64 && BR2_LOONGARCH_FPU_32
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default BR2_LOONGARCH_ABI_LP64S if BR2_ARCH_IS_64 && BR2_LOONGARCH_SIMD_NONE
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config BR2_LOONGARCH_ABI_LP64D
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bool "lp64d"
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depends on BR2_ARCH_IS_64
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depends on BR2_LOONGARCH_FPU_64
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config BR2_LOONGARCH_ABI_LP64F
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bool "lp64f"
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depends on BR2_ARCH_IS_64
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# Failed to build host GCC initial, pending investigation
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depends on BR2_BROKEN
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depends on BR2_LOONGARCH_FPU_64 || BR2_LOONGARCH_FPU_32
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config BR2_LOONGARCH_ABI_LP64S
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bool "lp64s"
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depends on BR2_ARCH_IS_64
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# GCC can't find libraries, pending investigation
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depends on BR2_BROKEN
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endchoice
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config BR2_ARCH
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default "loongarch64" if BR2_ARCH_IS_64
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config BR2_NORMALIZED_ARCH
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default "loongarch"
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config BR2_ENDIAN
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default "LITTLE"
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config BR2_GCC_TARGET_ARCH
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default "loongarch64" if BR2_loongarch64_generic
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default "la64v1.0" if BR2_loongarch64_v1_0
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default "la64v1.1" if BR2_loongarch64_v1_1
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config BR2_GCC_TARGET_FPU
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default "64" if BR2_LOONGARCH_FPU_64
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default "32" if BR2_LOONGARCH_FPU_32
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default "none" if BR2_LOONGARCH_FPU_NONE
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config BR2_GCC_TARGET_SIMD
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default "lasx" if BR2_LOONGARCH_SIMD_LASX
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default "lsx" if BR2_LOONGARCH_SIMD_LSX
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default "none" if BR2_LOONGARCH_FPU_NONE
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config BR2_GCC_TARGET_ABI
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default "lp64d" if BR2_LOONGARCH_ABI_LP64D
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default "lp64f" if BR2_LOONGARCH_ABI_LP64F
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default "lp64s" if BR2_LOONGARCH_ABI_LP64S
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config BR2_READELF_ARCH_NAME
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default "LoongArch"
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# vim: ft=kconfig
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# -*- mode:kconfig; -*-
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