Re: [clang/lld 4.0.0 arm64] link failure in sys/boot/efi/loader

[Dimitry Andric]

On 23 Jan 2017, at 16:27, Shawn Webb  wrote:
> 
> Here's an interesting failure I'm seeing on HardenedBSD with clang 4.0.0
> bits mixed in:
> 
>  BEGIN LOG 
> cc -target aarch64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tmp -B/usr 
> -O2 -pipe -DHARDENEDBSD -DSKEIN_LOOP=111 
> -I/usr/src/sys/boot/efi/loader/../../arm64/libarm64 -msoft-float 
> -mgeneral-regs-only -I/usr/src/sys/boot/efi/loader 
> -I/usr/src/sys/boot/efi/loader/arch/arm64 
> -I/usr/src/sys/boot/efi/loader/../include 
> -I/usr/src/sys/boot/efi/loader/../include/arm64 
> -I/usr/src/sys/boot/efi/loader/../../../contrib/dev/acpica/include 
> -I/usr/src/sys/boot/efi/loader/../../.. 
> -I/usr/src/sys/boot/efi/loader/../../i386/libi386 
> -I/usr/src/sys/boot/efi/loader/../../zfs 
> -I/usr/src/sys/boot/efi/loader/../../../cddl/boot/zfs 
> -I/usr/src/sys/boot/efi/loader/../../../crypto/skein -DEFI_ZFS_BOOT -DNO_PCI 
> -DEFI -DSMBIOS_SERIAL_NUMBERS -DBOOT_FORTH 
> -I/usr/src/sys/boot/efi/loader/../../ficl 
> -I/usr/src/sys/boot/efi/loader/../../ficl/aarch64 
> -I/usr/src/sys/boot/efi/loader/../../fdt 
> -I/usr/obj/usr/src/sys/boot/efi/loader/../../fdt -DLOADER_FDT_SUPPORT 
> -DLOADER_DISK_SUPPORT -DLOADER_GPT_SUPPORT -DLOADER_MBR_SUPPORT 
> -I/usr/src/sys/boot/ficl -I/usr/src/sys/boot/ficl/aarch64 
> -I/usr/src/sys/boot/ficl/../common 
> -I/usr/src/sys/boot/efi/loader/../../common -ffreestanding -Wformat 
> -msoft-float -fshort-wchar -fPIC -g -DHAVE_LIBRESSL -std=gnu99 
> -Wsystem-headers -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter 
> -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized 
> -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int 
> -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value 
> -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 
> -Wno-unused-local-typedef -Wno-address-of-packed-member -Qunused-arguments  
> -Wl,-T/usr/src/sys/boot/efi/loader/arch/arm64/ldscript.arm64 -Wl,-Bsymbolic 
> -shared -nostdlib -Wl,-z,relro -Wl,-z,now -o loader.sym.full autoload.o 
> bootinfo.o conf.o copy.o devicename.o main.o self_reloc.o smbios.o vers.o 
> zfs.o skein.o skein_block.o exec.o start.o cache.o boot.o commands.o 
> console.o devopen.o interp.o interp_backslash.o interp_parse.o ls.o misc.o 
> module.o panic.o load_elf64.o reloc_elf64.o disk.o part.o crc32.o bcache.o 
> interp_forth.o  /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a 
> /usr/obj/usr/src/sys/boot/efi/loader/../libefi/libefi.a 
> /usr/obj/usr/src/sys/boot/efi/loader/../../fdt/libfdt.a 
> /usr/obj/usr/src/sys/boot/efi/loader/../../efi/fdt/libefi_fdt.a 
> /usr/obj/usr/src/sys/boot/efi/loader/../../../../lib/libstand/libstand.a
> /usr/bin/ld: error: Section has flags incompatible with others with the same 
> name autoload.o:(.text)
> /usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x0): can't create 
> dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
> defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
> /usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x8): can't create 
> dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
> defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)

Not an AArch64 expert here, but if I understand correctly AArch64's
world must be linked with a ports version of binutils?  Ed, any clues
about this?  Then again, this could also point to some real problem with
the section flags.

-Dimitry



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[clang/lld 4.0.0 arm64] link failure in sys/boot/efi/loader

[Shawn Webb]

Here's an interesting failure I'm seeing on HardenedBSD with clang 4.0.0
bits mixed in:

 BEGIN LOG 
cc -target aarch64-unknown-freebsd12.0 --sysroot=/usr/obj/usr/src/tmp -B/usr 
-O2 -pipe -DHARDENEDBSD -DSKEIN_LOOP=111 
-I/usr/src/sys/boot/efi/loader/../../arm64/libarm64 -msoft-float 
-mgeneral-regs-only -I/usr/src/sys/boot/efi/loader 
-I/usr/src/sys/boot/efi/loader/arch/arm64 
-I/usr/src/sys/boot/efi/loader/../include 
-I/usr/src/sys/boot/efi/loader/../include/arm64 
-I/usr/src/sys/boot/efi/loader/../../../contrib/dev/acpica/include 
-I/usr/src/sys/boot/efi/loader/../../.. 
-I/usr/src/sys/boot/efi/loader/../../i386/libi386 
-I/usr/src/sys/boot/efi/loader/../../zfs 
-I/usr/src/sys/boot/efi/loader/../../../cddl/boot/zfs 
-I/usr/src/sys/boot/efi/loader/../../../crypto/skein -DEFI_ZFS_BOOT -DNO_PCI 
-DEFI -DSMBIOS_SERIAL_NUMBERS -DBOOT_FORTH 
-I/usr/src/sys/boot/efi/loader/../../ficl 
-I/usr/src/sys/boot/efi/loader/../../ficl/aarch64 
-I/usr/src/sys/boot/efi/loader/../../fdt 
-I/usr/obj/usr/src/sys/boot/efi/loader/../../fdt -DLOADER_FDT_SUPPORT 
-DLOADER_DISK_SUPPORT -DLOADER_GPT_SUPPORT -DLOADER_MBR_SUPPORT 
-I/usr/src/sys/boot/ficl -I/usr/src/sys/boot/ficl/aarch64 
-I/usr/src/sys/boot/ficl/../common -I/usr/src/sys/boot/efi/loader/../../common 
-ffreestanding -Wformat -msoft-float -fshort-wchar -fPIC -g -DHAVE_LIBRESSL 
-std=gnu99 -Wsystem-headers -Werror -Wall -Wno-format-y2k -W 
-Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith 
-Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int 
-Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value 
-Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion 
-Wno-unused-local-typedef -Wno-address-of-packed-member -Qunused-arguments  
-Wl,-T/usr/src/sys/boot/efi/loader/arch/arm64/ldscript.arm64 -Wl,-Bsymbolic 
-shared -nostdlib -Wl,-z,relro -Wl,-z,now -o loader.sym.full autoload.o 
bootinfo.o conf.o copy.o devicename.o main.o self_reloc.o smbios.o vers.o zfs.o 
skein.o skein_block.o exec.o start.o cache.o boot.o commands.o console.o 
devopen.o interp.o interp_backslash.o interp_parse.o ls.o misc.o module.o 
panic.o load_elf64.o reloc_elf64.o disk.o part.o crc32.o bcache.o 
interp_forth.o  /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a 
/usr/obj/usr/src/sys/boot/efi/loader/../libefi/libefi.a 
/usr/obj/usr/src/sys/boot/efi/loader/../../fdt/libfdt.a 
/usr/obj/usr/src/sys/boot/efi/loader/../../efi/fdt/libefi_fdt.a 
/usr/obj/usr/src/sys/boot/efi/loader/../../../../lib/libstand/libstand.a
/usr/bin/ld: error: Section has flags incompatible with others with the same 
name autoload.o:(.text)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x0): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x8): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x10): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x18): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x20): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/ficl.c:(.rodata+0x28): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(ficl.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/words.c:(.rodata+0x0): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(words.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/words.c:(.rodata+0x8): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(words.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/words.c:(.rodata+0x10): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in /usr/obj/usr/src/sys/boot/efi/loader/../../ficl/libficl.a(words.o)
/usr/bin/ld: error: /usr/src/sys/boot/ficl/words.c:(.rodata+0x18): can't create 
dynamic relocation R_AARCH64_ABS64 against local symbol in readonly segment 
defined in