64-bit -mcmodel=large -fpic TLS GD and LD sequences.
(elf_x86_64_relocate_section): Handle -mcmodel=large -fpic
TLS GD and LD sequences in GD->LE, GD->IE and LD->LE transitions.
ld/testsuite/
* ld-x86-64/x86-64.exp: Add tlsld3, tlsgd7 and tlsgd8 tests.
* ld-x86-64/tlspic1.s: Add -mcmodel=large -fpic TLS GD and LD
sequences.
* ld-x86-64/tlspic.dd: Adjusted.
* ld-x86-64/tlspic.rd: Adjusted.
* ld-x86-64/tlspic-nacl.rd: Adjusted.
* ld-x86-64/tlsld3.dd: New test.
* ld-x86-64/tlsld3.s: New file.
* ld-x86-64/tlsgd7.dd: New test.
* ld-x86-64/tlsgd7.s: New file.
* ld-x86-64/tlsgd8.dd: New test.
* ld-x86-64/tlsgd8.s: New file.
+2013-08-29 Jakub Jelinek <jakub@redhat.com>
+
+ * elf64-x86-64.c (elf_x86_64_check_tls_transition): Allow
+ 64-bit -mcmodel=large -fpic TLS GD and LD sequences.
+ (elf_x86_64_relocate_section): Handle -mcmodel=large -fpic
+ TLS GD and LD sequences in GD->LE, GD->IE and LD->LE transitions.
+
2013-08-27 Alan Modra <amodra@gmail.com>
* elf-bfd.h (struct elf_backend_data): Remove as_needed_cleanup.
{
unsigned int val;
unsigned long r_symndx;
+ bfd_boolean largepic = FALSE;
struct elf_link_hash_entry *h;
bfd_vma offset;
struct elf_x86_64_link_hash_table *htab;
can transit to different access model. For 32bit, only
leaq foo@tlsgd(%rip), %rdi
.word 0x6666; rex64; call __tls_get_addr
- can transit to different access model. */
+ can transit to different access model. For largepic
+ we also support:
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq $rbx, %rax
+ call *%rax. */
static const unsigned char call[] = { 0x66, 0x66, 0x48, 0xe8 };
static const unsigned char leaq[] = { 0x66, 0x48, 0x8d, 0x3d };
- if ((offset + 12) > sec->size
- || memcmp (contents + offset + 4, call, 4) != 0)
+ if ((offset + 12) > sec->size)
return FALSE;
- if (ABI_64_P (abfd))
+ if (memcmp (contents + offset + 4, call, 4) != 0)
+ {
+ if (!ABI_64_P (abfd)
+ || (offset + 19) > sec->size
+ || offset < 3
+ || memcmp (contents + offset - 3, leaq + 1, 3) != 0
+ || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
+ || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
+ != 0)
+ return FALSE;
+ largepic = TRUE;
+ }
+ else if (ABI_64_P (abfd))
{
if (offset < 4
|| memcmp (contents + offset - 4, leaq, 4) != 0)
/* Check transition from LD access model. Only
leaq foo@tlsld(%rip), %rdi;
call __tls_get_addr
- can transit to different access model. */
+ can transit to different access model. For largepic
+ we also support:
+ leaq foo@tlsld(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq $rbx, %rax
+ call *%rax. */
static const unsigned char lea[] = { 0x48, 0x8d, 0x3d };
if (offset < 3 || (offset + 9) > sec->size)
return FALSE;
- if (memcmp (contents + offset - 3, lea, 3) != 0
- || 0xe8 != *(contents + offset + 4))
+ if (memcmp (contents + offset - 3, lea, 3) != 0)
return FALSE;
+
+ if (0xe8 != *(contents + offset + 4))
+ {
+ if (!ABI_64_P (abfd)
+ || (offset + 19) > sec->size
+ || memcmp (contents + offset + 4, "\x48\xb8", 2) != 0
+ || memcmp (contents + offset + 14, "\x48\x01\xd8\xff\xd0", 5)
+ != 0)
+ return FALSE;
+ largepic = TRUE;
+ }
}
r_symndx = htab->r_sym (rel[1].r_info);
may be versioned. */
return (h != NULL
&& h->root.root.string != NULL
- && (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
- || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32)
+ && (largepic
+ ? ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLTOFF64
+ : (ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PC32
+ || ELF32_R_TYPE (rel[1].r_info) == R_X86_64_PLT32))
&& (strncmp (h->root.root.string,
"__tls_get_addr", 14) == 0));
.word 0x6666; rex64; call __tls_get_addr
into:
movl %fs:0, %eax
- leaq foo@tpoff(%rax), %rax */
- if (ABI_64_P (output_bfd))
+ leaq foo@tpoff(%rax), %rax
+ For largepic, change:
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ into:
+ movq %fs:0, %rax
+ leaq foo@tpoff(%rax), %rax
+ nopw 0x0(%rax,%rax,1) */
+ int largepic = 0;
+ if (ABI_64_P (output_bfd)
+ && contents[roff + 5] == (bfd_byte) '\xb8')
+ {
+ memcpy (contents + roff - 3,
+ "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80"
+ "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
+ largepic = 1;
+ }
+ else if (ABI_64_P (output_bfd))
memcpy (contents + roff - 4,
"\x64\x48\x8b\x04\x25\0\0\0\0\x48\x8d\x80\0\0\0",
16);
15);
bfd_put_32 (output_bfd,
elf_x86_64_tpoff (info, relocation),
- contents + roff + 8);
- /* Skip R_X86_64_PC32/R_X86_64_PLT32. */
+ contents + roff + 8 + largepic);
+ /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
rel++;
continue;
}
.word 0x6666; rex64; call __tls_get_addr@plt
into:
movl %fs:0, %eax
- addq foo@gottpoff(%rip), %rax */
- if (ABI_64_P (output_bfd))
+ addq foo@gottpoff(%rip), %rax
+ For largepic, change:
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ into:
+ movq %fs:0, %rax
+ addq foo@gottpoff(%rax), %rax
+ nopw 0x0(%rax,%rax,1) */
+ int largepic = 0;
+ if (ABI_64_P (output_bfd)
+ && contents[roff + 5] == (bfd_byte) '\xb8')
+ {
+ memcpy (contents + roff - 3,
+ "\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05"
+ "\0\0\0\0\x66\x0f\x1f\x44\0", 22);
+ largepic = 1;
+ }
+ else if (ABI_64_P (output_bfd))
memcpy (contents + roff - 4,
"\x64\x48\x8b\x04\x25\0\0\0\0\x48\x03\x05\0\0\0",
16);
relocation = (htab->elf.sgot->output_section->vma
+ htab->elf.sgot->output_offset + off
- roff
+ - largepic
- input_section->output_section->vma
- input_section->output_offset
- 12);
bfd_put_32 (output_bfd, relocation,
- contents + roff + 8);
- /* Skip R_X86_64_PLT32. */
+ contents + roff + 8 + largepic);
+ /* Skip R_X86_64_PLT32/R_X86_64_PLTOFF64. */
rel++;
continue;
}
For 64bit, we change it into:
.word 0x6666; .byte 0x66; movq %fs:0, %rax.
For 32bit, we change it into:
- nopl 0x0(%rax); movl %fs:0, %eax. */
+ nopl 0x0(%rax); movl %fs:0, %eax.
+ For largepic, change:
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ into:
+ data32 data32 data32 nopw %cs:0x0(%rax,%rax,1)
+ movq %fs:0, %eax */
BFD_ASSERT (r_type == R_X86_64_TPOFF32);
- if (ABI_64_P (output_bfd))
+ if (ABI_64_P (output_bfd)
+ && contents[rel->r_offset + 5] == (bfd_byte) '\xb8')
+ memcpy (contents + rel->r_offset - 3,
+ "\x66\x66\x66\x66\x2e\x0f\x1f\x84\0\0\0\0\0"
+ "\x64\x48\x8b\x04\x25\0\0\0", 22);
+ else if (ABI_64_P (output_bfd))
memcpy (contents + rel->r_offset - 3,
"\x66\x66\x66\x64\x48\x8b\x04\x25\0\0\0", 12);
else
memcpy (contents + rel->r_offset - 3,
"\x0f\x1f\x40\x00\x64\x8b\x04\x25\0\0\0", 12);
- /* Skip R_X86_64_PC32/R_X86_64_PLT32. */
+ /* Skip R_X86_64_PC32/R_X86_64_PLT32/R_X86_64_PLTOFF64. */
rel++;
continue;
}
+2013-08-29 Jakub Jelinek <jakub@redhat.com>
+
+ * ld-x86-64/x86-64.exp: Add tlsld3, tlsgd7 and tlsgd8 tests.
+ * ld-x86-64/tlspic1.s: Add -mcmodel=large -fpic TLS GD and LD
+ sequences.
+ * ld-x86-64/tlspic.dd: Adjusted.
+ * ld-x86-64/tlspic.rd: Adjusted.
+ * ld-x86-64/tlspic-nacl.rd: Adjusted.
+ * ld-x86-64/tlsld3.dd: New test.
+ * ld-x86-64/tlsld3.s: New file.
+ * ld-x86-64/tlsgd7.dd: New test.
+ * ld-x86-64/tlsgd7.s: New file.
+ * ld-x86-64/tlsgd8.dd: New test.
+ * ld-x86-64/tlsgd8.s: New file.
+
2013-08-26 Roland McGrath <mcgrathr@google.com>
* ld-x86-64/x86-64.exp (Mixed x86_64 and i386 input test 1):
--- /dev/null
+#source: tlsgd7.s
+#as: --64
+#ld: -melf_x86_64 tmpdir/tlsgd7
+#objdump: -drw
+#target: x86_64-*-linux*
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+[a-f0-9]+ <_start>:
+[ ]*[a-f0-9]+: 49 bb ([0-9a-f]{2} ){8} movabs \$0x[0-9a-f]+,%r11
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 48 8d 1d ed ff ff ff lea -0x13\(%rip\),%rbx # [0-9a-f]+ <_start>
+[ ]*[a-f0-9]+: 4c 01 db add %r11,%rbx
+[ ]*[a-f0-9]+: 64 48 8b 04 25 00 00 00 00 mov %fs:0x0,%rax
+[ ]*[a-f0-9]+: 48 8d 80 fc ff ff ff lea -0x4\(%rax\),%rax
+[ ]*[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: c3 retq
+#pass
--- /dev/null
+ .text
+ .globl _start
+_start:
+1: movabsq $_GLOBAL_OFFSET_TABLE_-1b, %r11
+ pushq %rbx
+ pushq %rbx
+ leaq 1b(%rip), %rbx
+ addq %r11, %rbx
+
+ /* GD, -mcmodel=large */
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+
+ popq %rbx
+ popq %rbx
+ ret
+ .globl foo
+ .section .tdata,"awT",@progbits
+ .align 4
+ .type foo, @object
+ .size foo, 4
+foo:
+ .long 100
--- /dev/null
+#source: tlsgd8.s
+#as: --64
+#ld: -melf_x86_64 tmpdir/tlsgd8
+#objdump: -drwj.text
+#target: x86_64-*-linux* x86_64-*-nacl*
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+[a-f0-9]+ <_start>:
+[ ]*[a-f0-9]+: 49 bb ([0-9a-f]{2} ){8} movabs \$0x[0-9a-f]+,%r11
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 48 8d 1d ed ff ff ff lea -0x13\(%rip\),%rbx # [0-9a-f]+ <_start>
+[ ]*[a-f0-9]+: 4c 01 db add %r11,%rbx
+[ ]*[a-f0-9]+: 64 48 8b 04 25 00 00 00 00 mov %fs:0x0,%rax
+[ ]*[a-f0-9]+: 48 03 05 ([0-9a-f]{2} ){4} add 0x[0-9a-f]+\(%rip\),%rax # [0-9a-f]+ <_DYNAMIC\+0x140>
+[ ]*[a-f0-9]+: 66 0f 1f 44 00 00 nopw 0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: c3 retq
+#pass
--- /dev/null
+ .text
+ .globl _start
+_start:
+1: movabsq $_GLOBAL_OFFSET_TABLE_-1b, %r11
+ pushq %rbx
+ pushq %rbx
+ leaq 1b(%rip), %rbx
+ addq %r11, %rbx
+
+ /* GD, -mcmodel=large */
+ leaq foo@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+
+ popq %rbx
+ popq %rbx
+ ret
--- /dev/null
+#source: tlsld3.s
+#as: --64
+#ld: -melf_x86_64 tmpdir/tlsld3
+#objdump: -drw
+#target: x86_64-*-linux*
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+[a-f0-9]+ <_start>:
+[ ]*[a-f0-9]+: 49 bb ([0-9a-f]{2} ){8} movabs \$0x[0-9a-f]+,%r11
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 53 push %rbx
+[ ]*[a-f0-9]+: 48 8d 1d ed ff ff ff lea -0x13\(%rip\),%rbx # [0-9a-f]+ <_start>
+[ ]*[a-f0-9]+: 4c 01 db add %r11,%rbx
+[ ]*[a-f0-9]+: 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 data32 data32 data32 nopw %cs:0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 64 48 8b 04 25 00 00 00 00 mov %fs:0x0,%rax
+[ ]*[a-f0-9]+: 8b 80 fc ff ff ff mov -0x4\(%rax\),%eax
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: 5b pop %rbx
+[ ]*[a-f0-9]+: c3 retq
+#pass
--- /dev/null
+ .text
+ .globl _start
+_start:
+1: movabsq $_GLOBAL_OFFSET_TABLE_-1b, %r11
+ pushq %rbx
+ pushq %rbx
+ leaq 1b(%rip), %rbx
+ addq %r11, %rbx
+
+ /* LD, -mcmodel=large */
+ leaq foo@tlsld(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+
+ movl foo@dtpoff(%rax), %eax
+
+ popq %rbx
+ popq %rbx
+ ret
+ .globl foo
+ .section .tdata,"awT",@progbits
+ .align 4
+ .type foo, @object
+ .size foo, 4
+foo:
+ .long 100
+\[Nr\] Name +Type +Address +Off +Size +ES Flg Lk Inf Al
+\[[ 0-9]+\] +NULL +0+ 0+ 0+ 00 +0 +0 +0
+\[[ 0-9]+\] .plt +.*
- +\[[ 0-9]+\] .text +PROGBITS +0+1000 [0-9a-f]+ 0+1aa 00 +AX +0 +0 4096
+ +\[[ 0-9]+\] .text +PROGBITS +0+1000 [0-9a-f]+ 0+31a 00 +AX +0 +0 4096
+\[[ 0-9]+\] .hash +.*
+\[[ 0-9]+\] .dynsym +.*
+\[[ 0-9]+\] .dynstr +.*
+11a5: 90[ ]+nop *
+11a6: 90[ ]+nop *
+11a7: 90[ ]+nop *
- +11a8: c9[ ]+leaveq *
- +11a9: c3[ ]+retq *
+ +11a8: 49 bb ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%r11
+ +11af: ([0-9a-f]{2} ){3}
+ +11b2: 53[ ]+push %rbx
+ +11b3: 53[ ]+push %rbx
+ +11b4: 48 8d 1d ed ff ff ff[ ]+lea -0x13\(%rip\),%rbx +# [0-9a-f]+ <fn1\+0x[0-9a-f]+>
+ +11bb: 4c 01 db[ ]+add %r11,%rbx
+ +11be: 90[ ]+nop *
+ +11bf: 90[ ]+nop *
+ +11c0: 90[ ]+nop *
+ +11c1: 90[ ]+nop *
+# -mcmodel=large sequences
+#
+# -mcmodel=large GD
+ +11c2: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x180>
+# -> R_X86_64_DTPMOD64 sg1
+ +11c9: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +11d0: ([0-9a-f]{2} ){3}
+ +11d3: 48 01 d8[ ]+add %rbx,%rax
+ +11d6: ff d0[ ]+callq \*%rax
+ +11d8: 90[ ]+nop *
+ +11d9: 90[ ]+nop *
+ +11da: 90[ ]+nop *
+ +11db: 90[ ]+nop *
+# -mcmodel=large GD -> IE because variable is referenced through IE too
+# -> R_X86_64_TPOFF64 sg2
+ +11dc: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
+ +11e3: 00 00
+ +11e5: 48 03 05 ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_DYNAMIC\+0x1a0>
+# -> R_X86_64_TPOFF64 sg2
+ +11ec: 66 0f 1f 44 00 00[ ]+nopw 0x0\(%rax,%rax,1\)
+ +11f2: 90[ ]+nop *
+ +11f3: 90[ ]+nop *
+ +11f4: 90[ ]+nop *
+ +11f5: 90[ ]+nop *
+# -mcmodel=large GD against local variable
+ +11f6: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x130>
+# -> R_X86_64_DTPMOD64 [0 0x2000000000000000]
+ +11fd: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +1204: ([0-9a-f]{2} ){3}
+ +1207: 48 01 d8[ ]+add %rbx,%rax
+ +120a: ff d0[ ]+callq \*%rax
+ +120c: 90[ ]+nop *
+ +120d: 90[ ]+nop *
+ +120e: 90[ ]+nop *
+ +120f: 90[ ]+nop *
+# -mcmodel=large GD -> IE against local variable referenced through IE too
+ +1210: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
+ +1217: 00 00
+ +1219: 48 03 05 ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_DYNAMIC\+0x140>
+# -> R_X86_64_TPOFF64 *ABS*+0x24
+ +1220: 66 0f 1f 44 00 00[ ]+nopw 0x0\(%rax,%rax,1\)
+ +1226: 90[ ]+nop *
+ +1227: 90[ ]+nop *
+ +1228: 90[ ]+nop *
+ +1229: 90[ ]+nop *
+# -mcmodel=large GD against hidden and local variable
+ +122a: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x1a8>
+# -> R_X86_64_DTPMOD64 [0 0x4000000000000000]
+ +1231: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +1238: ([0-9a-f]{2} ){3}
+ +123b: 48 01 d8[ ]+add %rbx,%rax
+ +123e: ff d0[ ]+callq \*%rax
+ +1240: 90[ ]+nop *
+ +1241: 90[ ]+nop *
+ +1242: 90[ ]+nop *
+ +1243: 90[ ]+nop *
+# -mcmodel=large GD -> IE against hidden and local variable referenced through IE too
+ +1244: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
+ +124b: 00 00
+ +124d: 48 03 05 ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_DYNAMIC\+0x1b8>
+# -> R_X86_64_TPOFF64 *ABS*+0x44
+ +1254: 66 0f 1f 44 00 00[ ]+nopw 0x0\(%rax,%rax,1\)
+ +125a: 90[ ]+nop *
+ +125b: 90[ ]+nop *
+ +125c: 90[ ]+nop *
+ +125d: 90[ ]+nop *
+# -mcmodel=large GD against hidden but not local variable
+ +125e: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x160>
+# -> R_X86_64_DTPMOD64 [0 0x6000000000000000]
+ +1265: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +126c: ([0-9a-f]{2} ){3}
+ +126f: 48 01 d8[ ]+add %rbx,%rax
+ +1272: ff d0[ ]+callq \*%rax
+ +1274: 90[ ]+nop *
+ +1275: 90[ ]+nop *
+ +1276: 90[ ]+nop *
+ +1277: 90[ ]+nop *
+# -mcmodel=large GD -> IE against hidden but not local variable referenced through IE too
+ +1278: 64 48 8b 04 25 00 00[ ]+mov %fs:0x0,%rax
+ +127f: 00 00
+ +1281: 48 03 05 ([0-9a-f]{2} ){4}[ ]+add 0x[0-9a-f]+\(%rip\),%rax +# [0-9a-f]+ <_DYNAMIC\+0x170>
+# -> R_X86_64_TPOFF64 *ABS*+0x64
+ +1288: 66 0f 1f 44 00 00[ ]+nopw 0x0\(%rax,%rax,1\)
+ +128e: 90[ ]+nop *
+ +128f: 90[ ]+nop *
+ +1290: 90[ ]+nop *
+ +1291: 90[ ]+nop *
+# -mcmodel=large LD
+ +1292: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x150>
+# -> R_X86_64_DTPMOD64 [0 0x000000000000000]
+ +1299: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +12a0: ([0-9a-f]{2} ){3}
+ +12a3: 48 01 d8[ ]+add %rbx,%rax
+ +12a6: ff d0[ ]+callq \*%rax
+ +12a8: 90[ ]+nop *
+ +12a9: 90[ ]+nop *
+ +12aa: 48 8d 90 20 00 00 00[ ]+lea 0x20\(%rax\),%rdx
+ +12b1: 90[ ]+nop *
+ +12b2: 90[ ]+nop *
+ +12b3: 4c 8d 88 26 00 00 00[ ]+lea 0x26\(%rax\),%r9
+ +12ba: 90[ ]+nop *
+ +12bb: 90[ ]+nop *
+ +12bc: 90[ ]+nop *
+ +12bd: 90[ ]+nop *
+# -mcmodel=large LD against hidden and local variables
+ +12be: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x150>
+# -> R_X86_64_DTPMOD64 [0 0x000000000000000]
+ +12c5: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +12cc: ([0-9a-f]{2} ){3}
+ +12cf: 48 01 d8[ ]+add %rbx,%rax
+ +12d2: ff d0[ ]+callq \*%rax
+ +12d4: 90[ ]+nop *
+ +12d5: 90[ ]+nop *
+ +12d6: 48 8d 90 40 00 00 00[ ]+lea 0x40\(%rax\),%rdx
+ +12dd: 90[ ]+nop *
+ +12de: 90[ ]+nop *
+ +12df: 48 8d 88 47 00 00 00[ ]+lea 0x47\(%rax\),%rcx
+ +12e6: 90[ ]+nop *
+ +12e7: 90[ ]+nop *
+ +12e8: 90[ ]+nop *
+ +12e9: 90[ ]+nop *
+# -mcmodel=large LD against hidden but not local variables
+ +12ea: 48 8d 3d ([0-9a-f]{2} ){4}[ ]+lea 0x[0-9a-f]+\(%rip\),%rdi +# [0-9a-f]+ <_DYNAMIC\+0x150>
+# -> R_X86_64_DTPMOD64 [0 0x000000000000000]
+ +12f1: 48 b8 ([0-9a-f]{2} ){5}[ ]+movabs \$0x[0-9a-f]+,%rax
+# -> R_X86_64_JUMP_SLOT __tls_get_addr
+ +12f8: ([0-9a-f]{2} ){3}
+ +12fb: 48 01 d8[ ]+add %rbx,%rax
+ +12fe: ff d0[ ]+callq \*%rax
+ +1300: 90[ ]+nop *
+ +1301: 90[ ]+nop *
+ +1302: 4c 8d a0 60 00 00 00[ ]+lea 0x60\(%rax\),%r12
+ +1309: 90[ ]+nop *
+ +130a: 90[ ]+nop *
+ +130b: 48 8d 88 65 00 00 00[ ]+lea 0x65\(%rax\),%rcx
+ +1312: 90[ ]+nop *
+ +1313: 90[ ]+nop *
+ +1314: 90[ ]+nop *
+ +1315: 90[ ]+nop *
+ +1316: 5b[ ]+pop %rbx
+ +1317: 5b[ ]+pop %rbx
+ +1318: c9[ ]+leaveq
+ +1319: c3[ ]+retq
+\[[ 0-9]+\] .rela.dyn +.*
+\[[ 0-9]+\] .rela.plt +.*
+\[[ 0-9]+\] .plt +.*
- +\[[ 0-9]+\] .text +PROGBITS +0+1000 0+1000 0+1aa 00 +AX +0 +0 4096
- +\[[ 0-9]+\] .tdata +PROGBITS +0+2011aa 0+11aa 0+60 00 WAT +0 +0 +1
- +\[[ 0-9]+\] .tbss +NOBITS +0+20120a 0+120a 0+20 00 WAT +0 +0 +1
- +\[[ 0-9]+\] .dynamic +DYNAMIC +0+201210 0+1210 0+130 10 +WA +3 +0 +8
- +\[[ 0-9]+\] .got +PROGBITS +0+201340 0+1340 0+90 08 +WA +0 +0 +8
- +\[[ 0-9]+\] .got.plt +PROGBITS +0+2013d0 0+13d0 0+20 08 +WA +0 +0 +8
+ +\[[ 0-9]+\] .text +PROGBITS +0+1000 0+1000 0+31a 00 +AX +0 +0 4096
+ +\[[ 0-9]+\] .tdata +PROGBITS +0+20131a 0+131a 0+60 00 WAT +0 +0 +1
+ +\[[ 0-9]+\] .tbss +NOBITS +0+20137a 0+137a 0+20 00 WAT +0 +0 +1
+ +\[[ 0-9]+\] .dynamic +DYNAMIC +0+201380 0+1380 0+130 10 +WA +3 +0 +8
+ +\[[ 0-9]+\] .got +PROGBITS +0+2014b0 0+14b0 0+90 08 +WA +0 +0 +8
+ +\[[ 0-9]+\] .got.plt +PROGBITS +0+201540 0+1540 0+20 08 +WA +0 +0 +8
+\[[ 0-9]+\] .shstrtab +.*
+\[[ 0-9]+\] .symtab +.*
+\[[ 0-9]+\] .strtab +.*
Program Headers:
+Type +Offset +VirtAddr +PhysAddr +FileSiz +MemSiz +Flg Align
+LOAD +0x0+ 0x0+ 0x0+ 0x[0-9a-f]+ 0x[0-9a-f]+ R E 0x200000
- +LOAD +0x0+11aa 0x0+2011aa 0x0+2011aa 0x0+246 0x0+246 RW +0x200000
- +DYNAMIC +0x0+1210 0x0+201210 0x0+201210 0x0+130 0x0+130 RW +0x8
- +TLS +0x0+11aa 0x0+2011aa 0x0+2011aa 0x0+60 0x0+80 R +0x1
+ +LOAD +0x0+131a 0x0+20131a 0x0+20131a 0x0+246 0x0+246 RW +0x200000
+ +DYNAMIC +0x0+1380 0x0+201380 0x0+201380 0x0+130 0x0+130 RW +0x8
+ +TLS +0x0+131a 0x0+20131a 0x0+20131a 0x0+60 0x0+80 R +0x1
Section to Segment mapping:
+Segment Sections...
movq %fs:(%rcx), %rdx
nop;nop;nop;nop
+1: movabsq $_GLOBAL_OFFSET_TABLE_-1b, %r11
+ pushq %rbx
+ pushq %rbx
+ leaq 1b(%rip), %rbx
+ addq %r11, %rbx
+ nop;nop;nop;nop
+
+ /* -mcmodel=large sequences */
+
+ /* -mcmodel=large GD */
+ leaq sg1@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD -> IE because variable is referenced through IE too */
+ leaq sg2@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD against local variable */
+ leaq sl1@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD -> IE against local variable referenced through IE too */
+ leaq sl2@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD against hidden and local variable */
+ leaq sh1@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD -> IE against hidden and local variable referenced through
+ IE too */
+ leaq sh2@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD against hidden but not local variable */
+ leaq sH1@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large GD -> IE against hidden but not local variable referenced through
+ IE too */
+ leaq sH2@tlsgd(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop;nop;nop
+
+ /* -mcmodel=large LD */
+ leaq sl1@tlsld(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop
+ leaq sl1@dtpoff(%rax), %rdx
+ nop;nop
+ leaq 2+sl2@dtpoff(%rax), %r9
+ nop;nop;nop;nop
+
+ /* -mcmodel=large LD against hidden and local variables */
+ leaq sh1@tlsld(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop
+ leaq sh1@dtpoff(%rax), %rdx
+ nop;nop
+ leaq sh2@dtpoff+3(%rax), %rcx
+ nop;nop;nop;nop
+
+ /* -mcmodel=large LD against hidden but not local variables */
+ leaq sH1@tlsld(%rip), %rdi
+ movabsq $__tls_get_addr@pltoff, %rax
+ addq %rbx, %rax
+ call *%rax
+ nop;nop
+ leaq sH1@dtpoff(%rax), %r12
+ nop;nop
+ leaq sH2@dtpoff+1(%rax), %rcx
+ nop;nop;nop;nop
+
+ popq %rbx
+ popq %rbx
+
leave
ret
{"TLS X32 LD->LE transition" "-melf32_x86_64" ""
"--x32" {tlsld2.s}
{{objdump -dwr tlsld2.dd}} "tlsld2"}
+ {"TLS -mcmodel=large GD->LE transition" "-melf_x86_64" ""
+ "--64" {tlsgd7.s}
+ {{objdump -dwr tlsgd7.dd}} "tlsgd7"}
+ {"TLS -mcmodel=large LD->LE transition" "-melf_x86_64" ""
+ "--64" {tlsld3.s}
+ {{objdump -dwr tlsld3.dd}} "tlsld3"}
+ {"TLS -mcmodel=large GD->IE transition" "-melf_x86_64 tmpdir/libtlsgd5.so" ""
+ "--64" {tlsgd8.s}
+ {{objdump -dwrj.text tlsgd8.dd}} "tlsgd8"}
{"build 32-bit object with 33 locals" "-melf_x86_64 -e 0" "" "--32" {32bit.s} {{ ld incompatible.l }} "dummy" }
{"build 64-bit object" "-melf_x86_64 -e 0 --defsym foo=1" "" "--64" {64bit.s} {} "dummy" }
projects / external / binutils.git / commitdiff