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X86-64 TLSDESC sequences can be: 4c 8d 0d 00 00 00 00 leaq foo@TLSDESC(%rip), %r9 4c 89 c8 movq %r9, %rax ff 10 call *foo@TLSCALL(%rax) TLSDESC -> LE relaxation can turn them into: 49 c7 c1 fc ff ff ff mov $0xfffffffffffffffc,%r9 4c 89 c8 mov %r9,%rax 66 90 xchg %ax,%ax We need to check and update the REX byte in this case. PR gold/25473 * x86_64.cc (Target_x86_64<size>::Relocate::tls_desc_gd_to_ie): Properly check r8 - r15 in "lea foo@TLSDESC(%rip), %reg". (Target_x86_64<size>::Relocate::tls_desc_gd_to_le): Properly relax r8 - r15 in "lea foo@TLSDESC(%rip), %reg". * testsuite/Makefile.am (check_SCRIPTS): Add x86_64_gd_to_le.sh. (check_DATA): Add x86_64_gd_to_le.stdout. (MOSTLYCLEANFILES): Add x86_64_gd_to_le. (x86_64_gd_to_le.o): New target. (x86_64_gd_to_le): Likewise. (x86_64_gd_to_le.stdout): Likewise. * testsuite/Makefile.in: Regenerated. * testsuite/x86_64_gd_to_le.s: New file. * testsuite/x86_64_gd_to_le.sh: Likewise.
25 lines
422 B
ArmAsm
25 lines
422 B
ArmAsm
.text
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.p2align 4
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.globl _start
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.type _start, @function
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_start:
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.cfi_startproc
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subq $8, %rsp
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.cfi_def_cfa_offset 16
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leaq foo@TLSDESC(%rip), %r9
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movq %r9, %rax
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call *foo@TLSCALL(%rax)
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addq %fs:0, %rax
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addq $8, %rsp
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.cfi_def_cfa_offset 8
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ret
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.cfi_endproc
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.size _start, .-_start
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.section .tdata,"awT",@progbits
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.align 4
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.type foo, @object
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.size foo, 4
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foo:
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.long 30
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.section .note.GNU-stack,"",@progbits
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