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diff -rup binutils.orig/bfd/elf64-x86-64.c binutils-2.30/bfd/elf64-x86-64.c
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--- binutils.orig/bfd/elf64-x86-64.c 2018-10-08 15:24:17.980797510 +0100
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+++ binutils-2.30/bfd/elf64-x86-64.c 2018-10-08 15:25:02.643458607 +0100
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@@ -4399,15 +4399,23 @@ elf_x86_64_finish_dynamic_sections (bfd
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if (htab->tlsdesc_plt)
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{
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+ /* The TLSDESC entry in a lazy procedure linkage table. */
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+ static const bfd_byte tlsdesc_plt_entry[LAZY_PLT_ENTRY_SIZE] =
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+ {
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+ 0xf3, 0x0f, 0x1e, 0xfa, /* endbr64 */
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+ 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */
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+ 0xff, 0x25, 16, 0, 0, 0 /* jmpq *GOT+TDG(%rip) */
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+ };
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+
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bfd_put_64 (output_bfd, (bfd_vma) 0,
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htab->elf.sgot->contents + htab->tlsdesc_got);
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memcpy (htab->elf.splt->contents + htab->tlsdesc_plt,
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- htab->lazy_plt->plt0_entry,
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- htab->lazy_plt->plt0_entry_size);
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+ tlsdesc_plt_entry, LAZY_PLT_ENTRY_SIZE);
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- /* Add offset for pushq GOT+8(%rip), since the
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- instruction uses 6 bytes subtract this value. */
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+ /* Add offset for pushq GOT+8(%rip), since ENDBR64 uses 4
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+ bytes and the instruction uses 6 bytes, subtract these
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+ values. */
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bfd_put_32 (output_bfd,
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(htab->elf.sgotplt->output_section->vma
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+ htab->elf.sgotplt->output_offset
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@@ -4415,14 +4423,13 @@ elf_x86_64_finish_dynamic_sections (bfd
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- htab->elf.splt->output_section->vma
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- htab->elf.splt->output_offset
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- htab->tlsdesc_plt
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- - 6),
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+ - 4 - 6),
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(htab->elf.splt->contents
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+ htab->tlsdesc_plt
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- + htab->lazy_plt->plt0_got1_offset));
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- /* Add offset for the PC-relative instruction accessing
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- GOT+TDG, where TDG stands for htab->tlsdesc_got,
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- subtracting the offset to the end of that
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- instruction. */
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+ + 4 + 2));
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+ /* Add offset for indirect branch via GOT+TDG, where TDG
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+ stands for htab->tlsdesc_got, subtracting the offset
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+ to the end of that instruction. */
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bfd_put_32 (output_bfd,
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(htab->elf.sgot->output_section->vma
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+ htab->elf.sgot->output_offset
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@@ -4430,10 +4437,9 @@ elf_x86_64_finish_dynamic_sections (bfd
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- htab->elf.splt->output_section->vma
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- htab->elf.splt->output_offset
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- htab->tlsdesc_plt
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- - htab->lazy_plt->plt0_got2_insn_end),
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+ - 4 - 6 - 6),
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(htab->elf.splt->contents
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- + htab->tlsdesc_plt
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- + htab->lazy_plt->plt0_got2_offset));
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+ + htab->tlsdesc_plt + 4 + 6 + 2));
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}
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}
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Only in binutils-2.30/bfd: elf64-x86-64.c.orig
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diff -rup binutils.orig/ld/testsuite/ld-x86-64/tlsdesc.pd binutils-2.30/ld/testsuite/ld-x86-64/tlsdesc.pd
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--- binutils.orig/ld/testsuite/ld-x86-64/tlsdesc.pd 2018-10-08 15:24:17.293802722 +0100
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+++ binutils-2.30/ld/testsuite/ld-x86-64/tlsdesc.pd 2018-10-08 15:25:07.515421664 +0100
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@@ -13,7 +13,7 @@ Disassembly of section .plt:
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[0-9a-f]+: ff 35 .. .. 20 00 pushq .*\(%rip\) # 201358 <_GLOBAL_OFFSET_TABLE_\+0x8>
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[0-9a-f]+: ff 25 .. .. 20 00 jmpq \*.*\(%rip\) # 201360 <_GLOBAL_OFFSET_TABLE_\+0x10>
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[0-9a-f]+: 0f 1f 40 00 nopl 0x0\(%rax\)
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+ [0-9a-f]+: f3 0f 1e fa endbr64
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[0-9a-f]+: ff 35 .. .. 20 00 pushq .*\(%rip\) # 201358 <_GLOBAL_OFFSET_TABLE_\+0x8>
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[0-9a-f]+: ff 25 .. .. 20 00 jmpq \*.*\(%rip\) # 201348 <.*>
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- [0-9a-f]+: 0f 1f 40 00 nopl 0x0\(%rax\)
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