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binutils/aarch64-dynamic-placement.patch
Michael Matz 8b4e6d652e Accepting request 181831 from home:Andreas_Schwab:Factory 
- aarch64-dynamic-placement.patch: Correct placement of &_DYNAMIC

OBS-URL: https://build.opensuse.org/request/show/181831
OBS-URL: https://build.opensuse.org/package/show/devel:gcc/binutils?expand=0&rev=134
2013-07-03 13:02:47 +00:00

338 lines
12 KiB
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2013-07-02 Marcus Shawcroft <marcus.shawcroft@arm.com>
* elf64-aarch64.c (aarch64_elf_create_got_section): New.
(elf64_aarch64_check_relocs): Use aarch64_elf_create_got_section.
(elf64_aarch64_create_dynamic_sections): Do not define
_GLOBAL_OFFSET_TABLE_; call aarch64_elf_create_got_section.
ld/testsuite/
* ld-aarch64/gc-plt-relocs.d: Adjust expected .got offsets.
* ld-aarch64/tls-desc-ie.d: Likewise.
* ld-aarch64/emit-relocs-311.d: Adjust expected symbol.
* ld-aarch64/tls-relax-all.d: Likewise.
* ld-aarch64/tls-relax-gd-ie.d: Likewise.
* ld-aarch64/tls-relax-gdesc-ie.d: Likewise.
* ld-aarch64/tls-relax-gdesc-ie-2.d: Likewise.
2013-07-02 Marcus Shawcroft <marcus.shawcroft@arm.com>
* ld-aarch64/emit-relocs-309-low.d: Adjust .text address.
* ld-aarch64/emit-relocs-309-up.d: Adjust .got address.
* ld-aarch64/emit-relocs-312.d: Adjust offsets into .got.
* ld-aarch64/tls-relax-all.d: Likewise.
* ld-aarch64/gc-got-relocs.d: Adjust expected .got content.
* ld-aarch64/gc-tls-relocs.d: Likewise.
* ld-aarch64/tls-relax-gd-ie.d: Likewise.
* ld-aarch64/tls-relax-gdesc-ie-2.d: Likewise.
* ld-aarch64/tls-relax-gdesc-ie.d: Likewise.
2013-06-27 Marcus Shawcroft <marcus.shawcroft@arm.com>
* elf64-aarch64.c (elf64_aarch64_check_relocs): Reserve one slot
in sgot.
(elf64_aarch64_finish_dynamic_sections): Place the &_DYNAMIC reference
in sgot[0] rather than sgotplt[0].
Index: binutils-2.23.2/bfd/elf64-aarch64.c
===================================================================
--- binutils-2.23.2.orig/bfd/elf64-aarch64.c
+++ binutils-2.23.2/bfd/elf64-aarch64.c
@@ -5077,6 +5077,70 @@ elf64_aarch64_allocate_local_symbols (bf
return TRUE;
}
+/* Create the .got section to hold the global offset table. */
+
+static bfd_boolean
+aarch64_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
+{
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ flagword flags;
+ asection *s;
+ struct elf_link_hash_entry *h;
+ struct elf_link_hash_table *htab = elf_hash_table (info);
+
+ /* This function may be called more than once. */
+ s = bfd_get_linker_section (abfd, ".got");
+ if (s != NULL)
+ return TRUE;
+
+ flags = bed->dynamic_sec_flags;
+
+ s = bfd_make_section_anyway_with_flags (abfd,
+ (bed->rela_plts_and_copies_p
+ ? ".rela.got" : ".rel.got"),
+ (bed->dynamic_sec_flags
+ | SEC_READONLY));
+ if (s == NULL
+ || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+ return FALSE;
+ htab->srelgot = s;
+
+ s = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+ return FALSE;
+ htab->sgot = s;
+ htab->sgot->size += GOT_ENTRY_SIZE;
+
+ if (bed->want_got_sym)
+ {
+ /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+ (or .got.plt) section. We don't do this in the linker script
+ because we don't want to define the symbol if we are not creating
+ a global offset table. */
+ h = _bfd_elf_define_linkage_sym (abfd, info, s,
+ "_GLOBAL_OFFSET_TABLE_");
+ elf_hash_table (info)->hgot = h;
+ if (h == NULL)
+ return FALSE;
+ }
+
+ if (bed->want_got_plt)
+ {
+ s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
+ if (s == NULL
+ || !bfd_set_section_alignment (abfd, s,
+ bed->s->log_file_align))
+ return FALSE;
+ htab->sgotplt = s;
+ }
+
+ /* The first bit of the global offset table is the header. */
+ s->size += bed->got_header_size;
+
+ return TRUE;
+}
+
/* Look through the relocs for a section during the first phase. */
static bfd_boolean
@@ -5315,13 +5379,10 @@ elf64_aarch64_check_relocs (bfd *abfd, s
}
}
- if (htab->root.sgot == NULL)
- {
- if (htab->root.dynobj == NULL)
- htab->root.dynobj = abfd;
- if (!_bfd_elf_create_got_section (htab->root.dynobj, info))
- return FALSE;
- }
+ if (htab->root.dynobj == NULL)
+ htab->root.dynobj = abfd;
+ if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+ return FALSE;
break;
}
@@ -5908,7 +5969,10 @@ elf64_aarch64_create_dynamic_sections (b
struct bfd_link_info *info)
{
struct elf64_aarch64_link_hash_table *htab;
- struct elf_link_hash_entry *h;
+
+ /* We need to create .got section. */
+ if (!aarch64_elf_create_got_section (dynobj, info))
+ return FALSE;
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
return FALSE;
@@ -5921,16 +5985,6 @@ elf64_aarch64_create_dynamic_sections (b
if (!htab->sdynbss || (!info->shared && !htab->srelbss))
abort ();
- /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the
- dynobj's .got section. We don't do this in the linker script
- because we don't want to define the symbol if we are not creating
- a global offset table. */
- h = _bfd_elf_define_linkage_sym (dynobj, info,
- htab->root.sgot, "_GLOBAL_OFFSET_TABLE_");
- elf_hash_table (info)->hgot = h;
- if (h == NULL)
- return FALSE;
-
return TRUE;
}
@@ -6939,15 +6993,8 @@ elf64_aarch64_finish_dynamic_sections (b
/* Fill in the first three entries in the global offset table. */
if (htab->root.sgotplt->size > 0)
{
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- if (sdyn == NULL)
- bfd_put_64 (output_bfd, (bfd_vma) 0,
- htab->root.sgotplt->contents);
- else
- bfd_put_64 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- htab->root.sgotplt->contents);
+ bfd_put_64 (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents);
+
/* Write GOT[1] and GOT[2], needed for the dynamic linker. */
bfd_put_64 (output_bfd,
(bfd_vma) 0,
@@ -6957,6 +7004,16 @@ elf64_aarch64_finish_dynamic_sections (b
htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2);
}
+ if (htab->root.sgot)
+ {
+ if (htab->root.sgot->size > 0)
+ {
+ bfd_vma addr =
+ sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0;
+ bfd_put_64 (output_bfd, addr, htab->root.sgot->contents);
+ }
+ }
+
elf_section_data (htab->root.sgotplt->output_section)->
this_hdr.sh_entsize = GOT_ENTRY_SIZE;
}
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/emit-relocs-311.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/emit-relocs-311.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/emit-relocs-311.d
@@ -10,5 +10,5 @@
+1000c: R_AARCH64_ADR_PREL_PG_HI21 tempy2
+10010: b0ffff91 adrp x17, 1000 <tempy3-0x234>
+10010: R_AARCH64_ADR_PREL_PG_HI21 tempy3
- +10014: 90000083 adrp x3, 20000 <tempy[+]0xf000>
+ +10014: 90000083 adrp x3, 20000 <_GLOBAL_OFFSET_TABLE_>
+10014: R_AARCH64_ADR_GOT_PAGE gempy
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/emit-relocs-312.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/emit-relocs-312.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/emit-relocs-312.d
@@ -10,10 +10,10 @@
+1000c: R_AARCH64_LD_PREL_LO19 tempy2
+10010: 58f89131 ldr x17, 1234 <tempy3>
+10010: R_AARCH64_LD_PREL_LO19 tempy3
- +10014: f9400843 ldr x3, \[x2.*
+ +10014: f9400c43 ldr x3, \[x2.*
+10014: R_AARCH64_LD64_GOT_LO12_NC jempy
- +10018: f9400444 ldr x4, \[x2.*
+ +10018: f9400844 ldr x4, \[x2.*
+10018: R_AARCH64_LD64_GOT_LO12_NC gempy
- +1001c: f9400045 ldr x5, \[x2.*
+ +1001c: f9400445 ldr x5, \[x2.*
+1001c: R_AARCH64_LD64_GOT_LO12_NC lempy
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/tls-desc-ie.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/tls-desc-ie.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/tls-desc-ie.d
@@ -3,18 +3,18 @@
#objdump: -dr
#...
+10000: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
- +10004: 91002000 add x0, x0, #0x8
+ +10004: 91004000 add x0, x0, #0x10
+10008: 94000016 bl 10060 <v1\+0x10060>
+1000c: d503201f nop
+10010: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
- +10014: f9400000 ldr x0, \[x0\]
+ +10014: f9400400 ldr x0, \[x0,#8\]
+10018: d503201f nop
+1001c: d503201f nop
+10020: d53bd041 mrs x1, tpidr_el0
+10024: 8b000020 add x0, x1, x0
+10028: d53bd042 mrs x2, tpidr_el0
+1002c: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
- +10030: f9400000 ldr x0, \[x0\]
+ +10030: f9400400 ldr x0, \[x0,#8\]
+10034: 8b000040 add x0, x2, x0
+10038: b9400000 ldr w0, \[x0\]
+1003c: 0b000020 add w0, w1, w0
@@ -24,13 +24,13 @@ Disassembly of section .plt:
0000000000010040 <.plt>:
+10040: a9bf7bf0 stp x16, x30, \[sp,#-16\]!
+10044: 90000090 adrp x16, 20000 <_GLOBAL_OFFSET_TABLE_>
- +10048: f9401611 ldr x17, \[x16,#40\]
- +1004c: 9100a210 add x16, x16, #0x28
+ +10048: f9401a11 ldr x17, \[x16,#48\]
+ +1004c: 9100c210 add x16, x16, #0x30
+10050: d61f0220 br x17
+10054: d503201f nop
+10058: d503201f nop
+1005c: d503201f nop
+10060: 90000090 adrp x16, 20000 <_GLOBAL_OFFSET_TABLE_>
- +10064: f9401a11 ldr x17, \[x16,#48\]
- +10068: 9100c210 add x16, x16, #0x30
+ +10064: f9401e11 ldr x17, \[x16,#56\]
+ +10068: 9100e210 add x16, x16, #0x38
+1006c: d61f0220 br x17
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-all.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/tls-relax-all.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-all.d
@@ -4,8 +4,8 @@
#...
+10000: a9bf7bfd stp x29, x30, \[sp,#-16\]!
+10004: 910003fd mov x29, sp
- +10008: 90000080 adrp x0, 20000 <ie_var\+0x1fff0>
- +1000c: f9400000 ldr x0, \[x0\]
+ +10008: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
+ +1000c: f9400400 ldr x0, \[x0,#8\]
+10010: d503201f nop
+10014: d503201f nop
+10018: d53bd041 mrs x1, tpidr_el0
@@ -19,8 +19,8 @@
+10038: 8b000040 add x0, x2, x0
+1003c: b9400000 ldr w0, \[x0\]
+10040: 0b000021 add w1, w1, w0
- +10044: 90000080 adrp x0, 20000 <ie_var\+0x1fff0>
- +10048: f9400400 ldr x0, \[x0,#8\]
+ +10044: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
+ +10048: f9400800 ldr x0, \[x0,#16\]
+1004c: d53bd041 mrs x1, tpidr_el0
+10050: 8b000020 add x0, x1, x0
+10054: b9400000 ldr w0, \[x0\]
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gd-ie.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/tls-relax-gd-ie.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gd-ie.d
@@ -2,8 +2,8 @@
#ld: -T relocs.ld -e0
#objdump: -dr
#...
- +10000: 90000080 adrp x0, 20000 <var\+0x20000>
- +10004: f9400000 ldr x0, \[x0\]
+ +10000: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
+ +10004: f9400400 ldr x0, \[x0,#8\]
+10008: d53bd041 mrs x1, tpidr_el0
+1000c: 8b000020 add x0, x1, x0
+10010: b9400000 ldr w0, \[x0\]
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie-2.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie-2.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie-2.d
@@ -2,9 +2,9 @@
#ld: -T relocs.ld -e0
#objdump: -dr
#...
- +10000: 90000080 adrp x0, 20000 <var\+0x20000>
+ +10000: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
+10004: d503201f nop
- +10008: f9400000 ldr x0, \[x0\]
+ +10008: f9400400 ldr x0, \[x0,#8\]
+1000c: d503201f nop
+10010: d503201f nop
+10014: d503201f nop
Index: binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie.d
===================================================================
--- binutils-2.23.2.orig/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie.d
+++ binutils-2.23.2/ld/testsuite/ld-aarch64/tls-relax-gdesc-ie.d
@@ -2,8 +2,8 @@
#ld: -T relocs.ld -e0
#objdump: -dr
#...
- +10000: 90000080 adrp x0, 20000 <var\+0x20000>
- +10004: f9400000 ldr x0, \[x0\]
+ +10000: 90000080 adrp x0, 20000 <_GLOBAL_OFFSET_TABLE_>
+ +10004: f9400400 ldr x0, \[x0,#8\]
+10008: d503201f nop
+1000c: d503201f nop
+10010: d53bd041 mrs x1, tpidr_el0
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