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llvm-project/lld/test/ELF/basic-freebsd.s

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[ELF] Move `# REQUIRES:` line to the top llvm-svn: 335625
2018-06-27 00:58:19 +08:00
# REQUIRES: x86
[ELF2] Fix binaries so they actually run on FreeBSD. Since FreeBSD 4.1, the kernel expects binaries to be marked with ELFOSABI_FREEBSD in the ELF header to exec() them. LLD unconditionally sets OSABI to ELF_OSABINONE, and everything linked with it won't run on FreeBSD (unless explicitly rebranded). Example: % ./aarch64-hello ELF binary type "0" not known. zsh: exec format error: ./aarch64-hello FreeBSD could be modified to accept ELF_OSABINONE, but that would break all existing binaries, so the kernel needs to support both ABINONE and ABIFREEBSD. I plan to push this change in FreeBSD one day, which, unfortunately, is not today. This code patches lld so it sets the header field correctly. For completeness, the rationale of this change is explained in the FreeBSD commit message, and it's apparently to pleasee binutils maintainers at the time. https://svnweb.freebsd.org/base?view=revision&revision=59342 Differential Revision: http://reviews.llvm.org/D13140 llvm-svn: 248554
2015-09-25 09:59:13 +08:00
# Verify that OSABI is set to the correct value.
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-freebsd %s -o %t
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
# RUN: ld.lld %t -o %t2
[test] Change llvm-readobj -long-option to --long-option or well-known short options. NFC Also change some options that have different semantics (cause confusion) in llvm-readelf mode: -s => -S -t => --symbols -sd => --section-data llvm-svn: 359651
2019-05-01 13:49:01 +08:00
# RUN: llvm-readobj --file-headers %t2 | FileCheck %s
[ELF2] Fix binaries so they actually run on FreeBSD. Since FreeBSD 4.1, the kernel expects binaries to be marked with ELFOSABI_FREEBSD in the ELF header to exec() them. LLD unconditionally sets OSABI to ELF_OSABINONE, and everything linked with it won't run on FreeBSD (unless explicitly rebranded). Example: % ./aarch64-hello ELF binary type "0" not known. zsh: exec format error: ./aarch64-hello FreeBSD could be modified to accept ELF_OSABINONE, but that would break all existing binaries, so the kernel needs to support both ABINONE and ABIFREEBSD. I plan to push this change in FreeBSD one day, which, unfortunately, is not today. This code patches lld so it sets the header field correctly. For completeness, the rationale of this change is explained in the FreeBSD commit message, and it's apparently to pleasee binutils maintainers at the time. https://svnweb.freebsd.org/base?view=revision&revision=59342 Differential Revision: http://reviews.llvm.org/D13140 llvm-svn: 248554
2015-09-25 09:59:13 +08:00
.globl _start
_start:
mov $1, %rax
mov $42, %rdi
syscall
# CHECK: ElfHeader {
# CHECK-NEXT: Ident {
# CHECK-NEXT: Magic: (7F 45 4C 46)
# CHECK-NEXT: Class: 64-bit (0x2)
# CHECK-NEXT: DataEncoding: LittleEndian (0x1)
# CHECK-NEXT: FileVersion: 1
# CHECK-NEXT: OS/ABI: FreeBSD (0x9)
# CHECK-NEXT: ABIVersion: 0
# CHECK-NEXT: Unused: (00 00 00 00 00 00 00)
# CHECK-NEXT: }
# CHECK-NEXT: Type: Executable (0x2)
# CHECK-NEXT: Machine: EM_X86_64 (0x3E)